1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.57:
3 * enhancement: implicit generic function warnings now specify the package
4 in which the new generic function is being created.
5 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
6 updates of CAS-able places (similar to Clojure's swap!).
7 * enhancement: run-program no longer decodes and re-encodes environment when
8 :environment argument is not provided. (lp#985904)
9 * bug fix: potential for infinite recursion during compilation of CLOS slot
10 typechecks when dependency graph had loops. (lp#1001799)
11 * bug fix: error forms reported with some program-errors were not escaped
13 * bug fix: functions from EVAL are now on more equal footing with functions
14 from COMPILE. (lp#1000783, lp#851170, lp#922408)
15 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
16 objects as its :METHOD-COMBINATION argument, not just lists designating
17 method combinations. (lp#936513)
19 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
20 * RANDOM enhancements and bug fixes:
21 ** bug fix: the range and distribution of random integers could be
22 catastrophically wrong when the compiler derived the type of its
23 argument as a disjoint set of small integers.
24 ** bug fix: the distribution of random integers is now completely
25 uniform even when the specified limit is not a power of two.
26 (Previously some values could be about 0.1 % more probable than
27 others in the worst case.)
28 ** RANDOM on large integer arguments is generally faster and conses
29 less than before; this is visible for fixnums above a length of
30 about 24 bits, but extremely so for bignums: the old implementation
31 used time and space quadratical in the size of the argument there,
32 the new one is linear.
33 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
34 main entry point, SB-EXT:QUIT is deprecated.
35 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
36 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
37 * enhancement: FASL loading no longer grabs the world-lock.
38 * enhancement: GENCGC reclaims space more aggressively when objects being
39 allocated are a large fraction of the total available heap space.
41 * enhancement: backtraces show the correct number of arguments for frames
42 called with too many arguments.
43 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
45 * enhancement: ASDF has been updated 2.21.
46 * optimization: fewer uses of full calls to signed modular functions.
48 * optimization: typechecking alien values is typically 5 x faster.
49 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
51 * bug fix: file compilation performance issues when dumping subtypes
52 of CHARACTER (lp#994487)
53 * bug fix: fixed disassembly of some SSE instructions on x86-64.
54 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
55 OPEN. (lp#969352, thanks to Kambiz Darabi)
56 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
58 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
59 classoid even if X was not the proper name of the class. (lp#941102)
60 * bug fix: declaration leakage between lexical environments due to careless
61 use of NCONC in MAKE-LEXENV. (lp#924276)
62 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
63 *default-pathname-defaults* contains NAME or TYPE components.
64 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
65 from CL package, e.g. (loop . 10).
66 * bug fix: run-program with existent or non-existent files for :output or
67 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
68 returns NIL instead of signalling an obscure error.
69 * bug fix: fix miscompilation of some logand forms with large constant
70 arguments. (lp#974406)
71 * bug fix: account for funcallable-instance objects properly in ROOM.
72 * bug fix: incorrect octets reported for c-string decoding errors.
74 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
76 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
77 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
78 allowing faster release of memory back to the OS. (lp#991293)
79 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
80 existing deadline for the dynamic scope of its body.
81 * bug fix: compiler-internal interval arithmetic needed to be more
82 conservative about open intervals when operated on by monotonic but not
83 strictly-monotonic functions. (lp#975528)
84 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
85 it's also slightly faster. (lp#998926)
86 * bug fix: better error messages for malformed declarations.
88 * bug fix: define-condition didn't return the name of the defined condition.
90 ** improved docstrings: REPLACE (lp#965592)
92 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
93 * bug fix: fix copy-structure. When copying from stack to heap, garbage
94 could end up in the heap making GC unhappy.
95 (Thanks to James Knight, lp#911027)
97 ** SBCL can now be built using Clang.
98 ** ASDF has been updated 2.20.
99 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
100 * bug fix: don't complain about a too-hairy lexical environment for inlining
101 when the function has never been requested for inlining. (lp#963530)
103 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
104 * enhancements to building SBCL using make.sh:
105 ** --fancy can be specified to enable all supported feature enhancements.
106 ** --with-<feature> and --without-<feature> can be used to specify
107 which features to build with.
108 ** --arch option can be used to specify the architecture to build for.
109 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
110 full-blows cross-compilation.)
111 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
112 which allows specifying name of the default interning package for the
114 * enhancement: when *READ-EVAL* is true, arrays with element type other than
115 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
116 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
117 null alien when malloc() fails. (lp#891268)
118 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
119 conditions can be conveniently accessed through function with the same
120 name, analogously to CONTINUE.
121 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
122 from the printer by type, causing an error marker to be printed instead.
123 (Thanks to Attila Lendvai)
124 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
125 generally behave better when errors occur during printing.
126 * enhancement: the test runner now takes a --report-skipped-tests argument
127 to report the individual tests skipped as well as the number of skipped
129 * enhancement: undefined functions now appear in backtraces as ("undefined
130 function") instead of ("bogus stack frame") on x86oids.
131 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
132 deadlock errors are reported in an easier-to-decipher manner.
133 * enhancement: DESCRIBE on type designators reports the expansion in more
135 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
136 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
137 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
138 * enhancement: better disassembly of segment-prefixes on x86 and other
139 instruction prefixes (e.g. LOCK) on x86 and x86-64.
140 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
141 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
142 * optimization: SUBSEQ on vectors of unknown element type is substantially
144 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
145 be stack-allocated. (lp#902351)
146 * optimization: the compiler is smarter about representation selection for
147 floating point constants used in full calls.
148 * optimization: the compiler no longer refuses to coerce large fixnums to
149 single floats inline, except on x86 where this limitation is still
151 * optimization: truncation operations on integers with constant divisor
152 arguments 1 and -1 are optimized away.
153 * bug fix: deadlock detection could report the same deadlock twice, for
154 two different threads. Now a single deadlock is reported exactly once.
155 * bug fix: interval-arithmetic division during type derivation did not
156 account for signed zeros.
157 * bug fix: compiler error when typechecking a call to a function with
158 non-constant keyword arguments.
159 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
160 * bug fix: condition slot accessors no longer cause undefined function
161 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
162 form that defines them. (lp#896379)
163 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
165 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
166 bogusly report NIL, T.
167 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
168 required arguments ignored and performed assignments to others.
170 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
171 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
172 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
173 * bug fix: redefining a function whose previous definition contained an
174 unknown type no longer causes a style-warning. (lp#806243)
175 * bug fix: undefined functions now appear in backtraces as ("undefined
176 function") instead of ("bogus stack frame") on non-x86oids.
177 * bug fix: backtraces are no longer cut off at ("undefined function") when
178 called under certain circumstances (involving a caller-allocated stack
180 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
181 systems. (regression since 1.0.53)
182 * bug fix: GC deadlocks from dladdr() on certain platforms.
183 * bug fix: broken standard streams no longer automatically cause recursive
184 errors on debugger entry.
185 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
186 (regression since 1.0.53)
187 * bug fix: attempts to stack allocate a required argument to a function with
188 an external entry point caused compiler-errors.
189 * bug fix: compiler notes for failed stack allocation for a function argument
190 no longer claim to be unable to stack allocate the function.
191 * bug fix: COERCE now signals a type-error on several coercions to
192 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
193 * bug fix: missing failure-to-stack-allocate compiler notes for some
194 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
195 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
197 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
199 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
200 * minor incompatible changes:
201 ** RENAME-FILE on a symbolic links used to rename the linked-to file
203 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
204 directory, but now signal an error instead. Use TRUENAME to resolve the
205 pathname if you wish to delete the linked directory, and DELETE-FILE if
206 you wish to delete the
207 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
208 symbols associated with it will trigger a compile-time warning.
209 * thread-related enhancements:
210 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
211 Many thanks to generous donors!)
212 ** Threading is now more reliable on non-Linux platforms. We still don't
213 consider threads on non-Linux platforms good enough to enable them by
214 default, but they're in a clearly better shape now.
215 ** Deadlines supported now on all platforms.
216 ** All blocking functions in the threading API now have a :TIMEOUT
218 ** Semaphore notification objects have been added to SB-THREAD.
219 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
220 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
221 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
222 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
223 using an API anologous to defining new SETFable places.
224 * GC-related enhancements and bug fixes:
225 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
226 and Gb suffixes. Default is megabytes as before.
227 ** on GENCGC targets, the default dynamic space size is now 512Mb for
228 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
229 exception, defaulting to mere 444Mb to fit under default ulimits.) The
230 new defaults are in place to prevent hitting swap on low-end systems.
231 Use build-time option --dynamic-space-size to build an SBCL with
232 another default, or the runtime option to adjust the size at startup: a
233 good size is at most equal to the amount of physical memory the system
235 ** on GENCGC targets, nursery and generation sizes now default to 5% of
237 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
238 refuses to create SIMPLE-FUN objects.
239 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
241 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
242 validation of pointer objects as GENCGC does, instead of a
243 comparatively weak bounds-check against the heap spaces.
244 * SB-BSD-SOCKETS bug fixes:
245 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
246 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
247 systems with getaddrinfo().
248 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
249 safe outside systems with getaddrinfo().
250 * enhancement: ASDF has been updated 2.019.
251 * enhancement: special-case TCO prevention for functions which never return
252 extended to untrusted types, keeping one more frame's worth of debug
253 information around in many cases.
254 * enhancement: debug-names of anonymous and local function are more
255 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
256 * enhancement: on win32, ABS of complex floats guards better against
257 overflows. (lp#888410)
258 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
259 process exiting with code 1. (lp#676987)
260 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
261 the system where on the filesystem the SBCL sources themselves are
262 located. (Thanks to Zach Beane)
263 * enhancement: the compiler is now able to derive tighter bounds for
264 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
265 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
266 correctly, even on wide-fixnum builds. (lp#887220)
267 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
268 resolved to directories.
269 * bug fix: type mismatch when assigning to lexical variables no longer
270 result in fasl-dumping internal type objects. (lp#890750)
271 * bug fix: type mismatch on (SETF AREF) and function return values no
272 longer result in fasl-dumping internal type objects.
273 * bug fix: With several combinations of argument types, for example (EXPT
274 <integer> <(complex double)>), EXPT now uses double-precision throughout
275 instead of partially calculating only to single-precision. (lp#741564;
276 thanks to Lutz Euler)
277 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
278 objects when interrupted by GC on PPC.
280 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
281 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
282 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
283 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
284 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
285 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
286 targets is now 63 bits (up from 61).
287 * enhancement: DESCRIBE now reports a lambda-list and source location
288 for complext setf-expanders.
289 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
290 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
291 of multiple-valued places to be set to NIL, instead of signalling an
292 error (per a careful reading of CLHS 5.1.2.3).
293 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
294 * bug fix: repair crash in x86oid darwin signal handling emulation
295 when built with certain compilers.
296 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
297 rotation arguments on x86-64. (lp#882151)
298 * bug fix: low-level control flow optimisations could result in bogus
299 code in functions with tail and non-tail calls to local functions on
301 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
302 to emit literal characters > (code-char 4095), for comparisons with
304 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
305 on 64 bit platforms. (lp#881445)
306 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
307 delete the wrong file when using relative pathnames. (lp#882877)
308 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
309 sequences and :KEY NIL.
311 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
312 * enhancement: ASDF has been updated to version 2.017.
313 * enhancement: the --core command line option now accepts binaries with
315 * enhancement: when built with :sb-core-compression, core files (regular
316 or executable) can be compressed with zlib. Use the :COMPRESSION
317 argument to SAVE-LISP-AND-DIE to specify a compression level.
318 * enhancement: --[no-]merge-core-pages determines whether the runtime
319 hints the operating system that identical core pages between SBCL
320 processes should share the same physical memory. Default is to only
321 enable this for compressed cores.
322 * optimization: SLEEP no longer conses.
323 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
324 or bit-vectors when using the standard pretty-print dispatch table.
325 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
327 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
328 AREF, CHAR, etc. (lp#826971)
329 * bug fix: compiler-errors causes by integer arguments with composed of
330 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
331 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
332 expressions. (lp#770184)
333 * bug fix: complex single float literals are correctly aligned when used
334 as arguments of arithmetic operators.
335 * bug fix: on 32-bit platforms, rounding of double floats larger than a
336 fixnum is correct. (reported by Peter Keller)
337 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
338 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
340 * bug fix: redefining classes such that slots with custom allocation are
341 added or removed works again.
343 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
344 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
345 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
346 MAKE-SOCKET-STREAM if using SERVE-EVENT.
347 * enhancement: added support for socket keepalive timeout intervals
348 and probe counts on Linux.
349 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
350 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
351 * enhancement: added new toplevel options --quit and --non-interactive
353 * enhancement: the Windows port of SBCL now builds and runs on Wine
354 (thanks to Anton Kovalenko).
355 * enhancement: more, and more correct, SSE instruction definitions on
356 x86-64 (thanks to Alexander Gavrilov).
357 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
358 to help the processor execute spin loops, when applicable. Currently
359 implemented for x86 and x86-64.
360 * optimization: unsigned integer divisions by a constant are implemented
361 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
362 * optimization: improved type-derivation for LOAD-TIME-VALUE.
363 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
364 instructions. (lp#814688)
365 * bug fix: COERCE to unfinalized extended sequence classes now works.
366 (reported by Jan Moringen; lp#815155)
367 * bug fix: a compiler error during typecheck generation, reported by Eric
369 * bug fix: obsolete instance protocol fires when shared slots are added
371 * bug fix: fixed-format floating point printing with scaling factors.
373 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
374 backtraces. (lp#818460)
375 * bug fix: better backtraces for interrupted syscall frames on x86.
377 * bug fix: SSE comparison instructions can be disassembled even when one
378 operand is in memory. (lp#814702)
379 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
380 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
381 type information associated with the VALUES form.
382 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
384 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
385 first write (lp#561642).
386 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
387 * bug fix: bound propagation involving conversion of large bignums to
388 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
390 * bug fix: &REST to &MORE conversion still works in unsafe call to known
391 functions; reported by Lutz Euler (lp#826459).
392 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
395 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
396 * enhancement: errors from FD handlers now provide a restart to remove
397 the offending handler.
398 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
400 * enhancement: location of user or system initialization file can now easily
401 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
402 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
403 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
404 the thunk, as a keyword argument, :arguments.
405 * enhancement: constraint propagation is simplified (and sped up) when
406 COMPILATION-SPEED > SPEED.
407 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
408 * enhancement: debugger understands &MORE arguments better.
409 * optimization: extracting bits of a single-float on x86-64 has been
410 optimized. (lp#555201)
411 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
412 when (> SPEED SPACE).
413 * optimization: local call trampolines (x86 and x86-64) are emitted
415 * optimization: implicit value cells for dynamic-extent closed-over bindings
416 on x86 and x86-64 can hold unboxed values as well.
417 * meta-optimization: improved compilation speed, especially for large
418 functions. (lp#792363 and lp#394206)
419 * bug fix: bound derivation for floating point operations is now more
420 careful about rounding possibly closing open bounds. (lp#793771)
421 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
422 backwards incompatible change in 1.0.48.27)
423 * bug fix: occasional debugger errors in when a type-error occured in a
424 function with dynamic-extent &rest list.
425 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
426 boa-construtors can be used to initialized structure slots.
427 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
428 (lp#795705, regression)
429 * bug fix: DIRECTORY works better on logical pathnames.
430 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
431 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
432 * bug fix: the compiler no longer constant-folds NaNs in
433 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
434 * bug fix: FORMAT now handles floating point rounding correct, eg.
435 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
437 * bug fix: style warning during lambda-list introspection of generic
438 functions with both optional and key argments.
439 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
441 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
444 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
445 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
446 interrupts for its body.
447 * enhancement: source locations are now available for files loaded as
448 source, compile-time-too evaluation, and initialization files.
449 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
450 virtual source-file information, eg. overriding input-file of COMPILE-FILE
451 when a temporary file is used for compilation.
452 * enhancement: ASDF has been updated to version 2.015.3.
453 * enhancement: backtraces involving frames from the default evaluator are
455 * enhancement: RUN-PROGRAM works with user-defined binary input and output
457 * enhancement: more informative compile-time warnings and runtime errors for
458 type-errors detected at compile-time.
459 * enhancement: deadlock detection for mutexes and spinlocks.
460 * enhancement: dynamic-extent for &rest lists stack allocate only their
461 spines, not their argumets. While portable code should not rely on this,
462 particularly in combination with inlining, it should make dynamic-extent
463 easier to use safely.
464 * enhancement: SB-POSIX improvements:
465 ** WNOHANG and WUNTRACED are exported.
466 ** SYSCALL-ERROR now also provides the name of the failing system call.
467 * enhancement: --script improvements:
468 ** errors on standard input, output, and error streams are handled and
469 cause scripts to exit silently, making them easier to use in shell
471 ** backtraces from scripts now go to standard error instead of the
472 terminal even if one is available.
473 ** --script can be an argument, causing the script to be loaded from
475 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
476 strings to foreign memory.
477 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
478 a file, making it easier to understand heap dynamics.
479 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
480 allows the compiler to automatically elide rest-list allocation so long as
481 the call sites are in functions that the compiler knows cannot escape.
483 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
484 especially in safe code when none of the required arguments have changed
486 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
487 uninterruptible, as well as blocking reads from socket streams created
488 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
489 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
490 from the to-char if the from-char is not a dispatch-macro character.
491 * bug fix: references to undefined variables in function calls that are
492 optimized away now signal a runtime error. (lp#722734)
493 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
494 types from a function defined in the same file. (regression from
496 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
498 * bug fix: spurious errors during QUIT when standard streams were closed.
500 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
501 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
502 years, is now no longer supported.
503 * enhancement: read() and write() have been added to SB-POSIX.
504 * enhancement: types of DEFSTRUCT constructors are proclaimed more
505 accurately, allowing better typechecking of call-sites.
506 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
507 are no longer caught. (reverted to pre 1.0.34 behaviour)
508 * optimization: slightly faster ISQRT. (lp#713343)
509 * bug fix: better support for Solaris /bin/sh in sh-based tests.
510 * bug fix: TRACE behaves better when attempting to trace undefined
511 functions. (lp#740717)
512 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
513 to (FUNCALL #'(LAMBDA ...) ...).
514 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
515 a compile-time error. (lp#720382)
516 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
518 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
519 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
520 optimization. (regression from 1.0.45.18/1.0.46.15)
521 * bug fix: package locks did not protects against compile-time side-effects
522 of DEFUN. (lp#675584)
523 * bug fix: --dynamic-space-size argument is validated more carefully.
525 * bug fix: memory fault from printing a malformed simple-condition.
527 * bug fix: redefining classes so that slot-definition classes change now
528 engages the obsolete instance protocol. (lp#766271)
529 * bug fix: constant improper lists could break source coverage recording.
531 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
534 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
535 * bug fix: fix mach port rights leaks in mach exception handling code on
536 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
538 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
539 * enhancement: redefinition warnings for macros from different files. (lp#434657)
540 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
541 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
542 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
543 processed using EVAL -- now the appropriate toplevel form is reported instead.
544 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
545 declarations. (lp#726331)
546 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
547 that NIL/NULL is excluded from the type.
548 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
550 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
552 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
553 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
554 stack-allocated values out of their dynamic-extent. (lp#310175)
555 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
556 x86-64 builds caused a type-error.
557 * bug fix: calling COMPILE with something else than a lambda-expression as the
558 second argument reports a more sensible error. (lp#718905)
559 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
560 are detected. (lp#520607)
561 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
563 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
564 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
565 methods. (regression from 1.0.45.18)
566 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
567 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
568 * bug fix: several foreign functions accepting string also accepted NIL and
569 consequently caused a memory fault at 0 now signal a type-error instead.
571 * bug fix: under rare circumstances, constraint propagation could rewrite a
572 variable reference to refer to a variable not in scope, causing an error
573 during physical environment analysis when attempting to close over the
574 variable. (lp#551227)
575 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
577 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
578 * enhancement: largefile support on Solaris.
579 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
580 arguments (lp#710017)
581 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
582 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
584 * optimization: ERROR and CERROR are approximately 5 times faster.
585 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
586 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
587 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
588 up instance creation in those cases.
589 * optimization: arithmetic operations with multiple constant arguments in now
590 have them reduced at compile-time. (lp#676414)
591 * optimization: determining current character position on string-streams for
592 pretty-printing was overly slow.
593 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
594 lifetime analysis to overwrite closed-over variables (lp#681092).
595 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
596 were not handled correctly (lp#713063).
597 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
599 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
600 mistake. (lp#667297).
601 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
602 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
603 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
604 unintern the wrong symbol with the same name. (lp#693796)
605 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
606 making it possible to restore the initial table if it has been messed up.
609 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
610 * enhancement: ~/ and ~user/ are treated specially in pathnames.
611 Refer to documentation for details.
612 * enhancement: ASDF has been updated to version 2.010.
613 * optimization: mutated closed-over variables that are only accessed by
614 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
615 declared to be DYNAMIC-EXTENT) are stored directly in their containing
616 stack frame, rather than allocating a VALUE-CELL (lp#586103).
617 * optimization: UNWIND-PROTECT cleanup functions are now declared
619 * bug fix: backtracing function with &REST arguments now shows the full
620 argument list. (lp#310173)
621 * bug fix: return types for functions with complex lambda-lists are now
622 derived properly (lp#384892)
623 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
624 long string arguments slowed the compiler down to a crawl.
625 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
626 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
627 in the DEFMETHOD body.
628 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
629 messages, being instead replaced with the corresponding function name.
630 * bug fix: don't derive overly complex unions of numeric types for arithmetic
631 operators. (lp#309448)
633 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
634 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
635 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
636 * enhancement: ALLOCATION-INFORMATION also provides the page the object
638 * enhancement: default dynamic-space size can be configured at build-time
639 without touching source, using the --dynamic-space-size argument to make.sh.
640 * enhancement: DESCRIBE recognizes symbols naming optimization policy
641 qualities, and mentions ALWAYS-BOUND declarations.
642 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
644 * enhancement: ASDF has been updated to 2.009.
645 * enhancement: the system detects known type-erros in calls better,
646 signalling a full warning about violated proclaimed FTYPEs and violations
647 of derived FTYPEs within the same file, including self-calls.
648 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
649 * optimization: constant-folding exploits numeric and character types, in
650 addition member types.
651 * optimization: numeric, character and member types that are inhabited by
652 exactly one value are tested with EQL.
653 * optimization: more conditional branches are eliminated during IR1.
654 Branches are simplified before performing if/if-conversion, and simple
655 equivalent branches (that only read the same constant or variable) are
657 * improvements to the Windows port:
658 ** change: canonical unparsing form for pathname namestrings now uses / as
659 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
660 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
661 on Windows. (thanks to Kalyanov Dmitry)
662 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
664 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
665 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
666 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
667 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
669 * bug fix: interrupts arriving during CL:OPEN caused an error.
670 * bug fix: overeager character buffering could cause input to block
671 spuriously when reading from a pipe (lp#643686)
672 * bug fix: more efficient timer expiry should avoid starvation on systems
673 where number of SIGALRMs per second is restricted. (lp#375515)
674 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
675 * bug fix: compile-times no longer scale linearly with the size of
676 quoted lists in source-code. (lp#654289)
677 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
678 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
679 so badly. (lp#654485)
680 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
681 an error for eg. STRUCTURE. (lp#458015)
682 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
683 (lp#613871, thanks to Roman Marynchak)
684 * bug fix: more reliable &REST list type derivation. (lp#655203)
685 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
686 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
687 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
688 also declared NOTINLINE. (lp#655581)
689 * bug fix: the compiler could attempt to emit constant left shifts of
690 greater value than n-word-bits. (lp#309063)
691 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
692 type information for the function being set. (lp#659220)
693 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
694 containing self-calls were recompiled with a new signature, and failed
695 to warn when a self-call using the old signature was left in. (lp#655126)
696 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
697 :DEFAULT when the default external had character size other than 8 bits.
699 * bug fix: derived types of functions in the same file were implicitly
700 trusted, leading to potential heap corruption when those function were
701 defined incompatibly. (lp#657499)
702 * bug fix: existing ASDF source registries are ignored when building
704 * bug fix: short-form DEFSETF checks that the second argument is a symbol
705 (lp#655824, thanks to Roman Marynchak)
706 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
707 package-lock violation was detected. (lp#660752)
708 * bug fix: the system can store different docstrings for a single function
709 under different names. (lp#661631, regression from 1.0.29.24)
710 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
711 properly. (lp#384801)
712 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
713 of specified length could confuse the type derivation in unsafe code.
715 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
716 fork with multiple Lisp threads running is made on every platform,
717 not just Darwin. (lp#451111)
718 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
719 around when core was saved, which could cause undefined behaviour when the
721 * bug fix: Allow UNTRACE of functions that are no longer defined
722 (lp#667657, thanks to Attila Lendvai)
723 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
724 compile-time warning (lp#664373, thanks to Stas Boukarev)
726 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
727 * incompatible change: FD-STREAMS no longer participate in the serve-event
728 event-loop by default. (lp#316072)
729 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
730 affects streams from CL:OPEN.
731 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
732 default, but this is liable to change: applications needing serve-event
733 for socket streams should explicitly request it using :SERVE-EVENTS T
735 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
737 * enhancement: CLOS effective method functions and defclass slot typechecking
738 function now have debug names for use in backtraces and profiles.
739 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
741 * enhancement: symbols are printed using fully qualified names in several
742 error and warning messages which are often associated with package
743 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
744 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
745 thanks to Andrew Golding)
746 * bug fix: reading /proc files on Linux works. (lp#425199)
747 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
749 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
750 breaking code that tried to write the value of a printer control variable.
751 (lp#581564, thanks to Stas Boukarev)
752 * bug fix: WRITE compiler macro did not handle output stream designators
753 correctly. (lp#598374, thanks to Stas Boukarev)
754 * bug fix: better availability of names of foreign functions in backtraces
755 on Linux. (lp#626962, thanks to Stas Boukarev)
756 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
757 lp#627581, thanks to Josh Elsasser and Jim Wise)
758 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
759 thanks to Josh Elsasser)
760 * bug fix: using aliases for builtin classes as defmethod specializers
761 without adding DEFTYPEs for them works. (lp#618387)
762 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
764 * bug fix: legally dynamic-extent lists and vectors used as
765 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
766 * bug fix: inline-expansion creating references to dead lambda-variables
767 (lp#454681, thanks to Alexey Dejneka)
768 * bug fix: better error message for bogus numerical arguments to RANDOM.
769 (lp#598986, thanks to Stas Boukarev)
770 * bug fix: the compiler occasionally inlined references from incompatible
771 environments occurs. (lp#308951)
772 * bug fix: the compiler threw an error when trying to compile a local
773 function (labels or flet) known to take a specialized complex argument.
774 (not in launchpad, reported by sykopomp in #lispgames)
775 * bug fix: package-locks failed to protect against compile-time effects of
776 DEFUN when the symbol previously had a macro definition. (lp#576637)
777 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
778 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
779 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
780 * bug fix: evaluation in debugger REPL works using the global context when
781 in frames that do not have sufficient debug information.
782 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
784 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
786 * bug fix: interrupt taking longer than the requested period caused SLEEP
787 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
789 changes in sbcl-1.0.42 relative to sbcl-1.0.41
791 ** Cross-compilation host is now specified to make.sh using
792 command-line argument --xc-host=<command> instead of a positional
793 argument. (thanks to Daniel Herring)
794 ** Install location can be specified to make.sh using command-line
795 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
796 * optimization: The default implementation of
797 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
798 * enhancement: Explicit memory barrier operations are now available for use
799 by multithreaded code. See documentation for details.
800 * enhancement: Experimental support for threading on Linux/PPC.
801 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
802 * bug fix: EXPT signals an error if first argument is a zero and second
803 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
804 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
805 (lp#576594, thanks to Roman Marynchak)
806 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
807 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
809 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
810 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
811 cached, leading to many fewer expensive calls to
812 COMPUTE-APPLICABLE-METHODS.
813 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
814 CLASS argument, search for and call an appropriate optimized ctor function
816 * bug fix: WRITE always returns the correct value.
818 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
819 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
820 * bug fix: Name conflicts between symbols passed as arguments to a single
821 call to IMPORT no longer add multiple symbols with the same name to the
822 package (detectable via DO-SYMBOLS).
823 * bug fix: support building without the dlshim on darwin x86 and x86-64
825 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
827 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
828 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
830 * bug fix: linkage-table entries on PPC now no longer overflow their
831 space allocation (potentially causing crashes if they are written out
833 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
834 platforms, preventing the GC from seeing stale pointers on the control
835 stack in subsequent GCs (which would, and does, break invariants).
836 * bug fix: 32-bit unicode external formats now work on big-endian systems.
837 * bug fix: Literal characters with code points greater than about 32767
838 now work on PPC UNICODE builds.
839 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
840 high order bits are explicitly cleared out. In some contrived situations,
841 this could lead to wrong results in mixed real/complex float arithmetic.
842 * bug fix: Fix function/macro redefinition warnings when building with
843 clisp. (lp#576787, thanks to Josh Elsasser)
844 * new platform: experimental support for ppc/openbsd (thanks to Josh
846 * bug fix: Floating-point traps now work on ppc/linux.
848 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
849 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
850 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
851 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
852 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
853 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
854 SB-THREAD:GRAB-MUTEX.
855 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
856 contain additional data structures and tools for concurrent programming;
857 at the moment it contains a lock-free queue, and a lock-free mailbox
859 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
860 GET-MUTEX but takes &key rather than &optional parameters. Also added
861 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
863 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
864 SB-THREAD:WAIT-ON-SEMAPHORE.
865 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
867 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
868 conditions to defer the deadline for forever.
869 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
871 * enhancement: errors from NO-APPLICABLE-METHOD and
872 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
873 generic function call.
874 * enhancement: SB-BSD-SOCKET improvements
875 ** sockets and socket streams now have a more informative printed
876 representation based on the corresponding SOCKET-NAME and
878 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
880 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
881 CL:CLOSE when appropriate, and no longer disassociates the stream
882 from the socket if close failed. (lp#543951)
883 * improvements to the instrumenting profiler
884 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
885 ** optimization: counters no longer use locks for the overflow mode.
886 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
887 incurred an off-by-one miscount.
888 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
889 * enhancement: improved DEFMETHOD pretty-printing.
890 * enhancement: perform range reduction when arguments are too large for
891 x87's transcendentals (instead of returning 0). (lp#327192)
892 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
893 some of CL-PPCRE's macros. (lp#570079)
894 * enhancement: our machine code is slightly less hostile to valgrind on
896 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
897 to Robert Swindells and Aleksej Saushev)
898 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
899 * bug fix: a rare case of startup-time page table corruption.
900 * bug fix: a semaphore with multiple waiters and some of them unwinding due
901 to timeouts could be left in an inconsistent state.
902 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
903 * bug fix: misoptimization of multiplication by one in
904 (SB-C::FLOAT-ACCURACY 0) policies.
905 * bug fix: miscounts in SB-PROFILE.
906 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
907 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
908 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
909 up itself" (March 2010) for further details.
910 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
911 against length of the list if the element is found before the specified
912 END is reached. (thanks to Alec Berryman, lp#554385)
913 * bug fix: errors signalled during package graph modification no longer
914 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
915 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
916 :SB-DOC feature. (lp#552564)
917 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
918 * bug fix: more robust runtime executable path detection. (lp#375549)
919 * bug fix: GCD always returns positive values. (lp#413680)
920 * bug fix: Converting division to multiplication by reciprocal handles
922 * bug fix: We were too eager in eliding range reduction tests on x87.
923 The maximal magnitude is 2^63, not 2^64.
924 * bug fix: Transforms for TRUNCATE don't die when the result is completely
926 * bug fix: Maybe restore buildability on Alpha.
927 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
929 * bug fix: RANDOM-STATE can be printed readably again.
930 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
931 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
932 types) could result in type mismatches during compilation.
934 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
935 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
936 stack frame thrown from.
937 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
938 compiler optimization qualities inside dynamic extent of its body.
939 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
940 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
942 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
943 constraint propgation, allowing better compilation eg. when used to
944 access structures with WITH-SLOTS. (lp#520366)
945 * optimization: the compiler is now more aware of the type of the underlying
946 storage vector for multidimensional simple arrays resulting in better code
947 for accessing such arrays.
948 * optimization: passing NIL as the environment argument to TYPEP no longer
949 inhibits optimizing it. (lp#309788)
950 * optimization: more efficient register usage when handling single-float
951 arguments on x86-64. (thanks to Lutz Euler)
952 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
953 pre-allocated temporary vectors. (lp#496249)
954 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
955 in :INITIAL-CONTENTS. (lp#523612)
956 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
957 functions. (lp#524707)
958 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
959 WITH-SLOTS usages during compilation.
960 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
961 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
962 all x86oid platforms with :UD2-BREAKPOINTS target feature.
963 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
964 instruction (tested on x86oid linux with ud2-breakpoints).
965 * bug fix: slam.sh now works on win32.
966 * bug fix: better differences of numeric types. (lp#309124)
967 * bug fix: arrays declared intersection and union types can have their
968 upgraded element type derived. (lp#316078)
969 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
970 threads started during profiling. (lp#472499)
971 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
973 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
974 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
975 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
976 values instead of signaling an error. (lp#309093)
977 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
979 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
980 declarations (lp#497321)
981 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
982 and failed to detect circular lists (lp#452008)
983 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
985 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
986 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
987 due to it, so that handlers can run.
988 * bug fix: reparsing undefined types if they have become defined since
990 * bug fix: missing &REST type in a proclamation for a function with both
991 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
992 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
993 expanded calls (lp#542174)
994 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
995 than just at toplevel form.
997 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
998 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
999 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1000 but work on type specifiers.
1001 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1002 to name a type specifier.
1003 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1004 specifier is valid where "valid" basically means "would be accepted as
1005 second argument of TYPEP".
1006 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1007 returns the function's declared, or derived FTYPE.
1008 * new feature: SB-POSIX now supports accessing the d_ino member of
1009 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1010 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1011 provide for seeding a RANDOM-STATE object with user-provided data or
1012 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1013 attempt to initialize the returned state from the operating system's
1014 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1015 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1016 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1017 * bug fix: Fix grammar and style issues for the docstrings of
1018 printer-related variables and functions. (Thanks to mon_key; launchpad
1020 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1022 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1023 in a row even though a handler defered the deadline long into the
1025 * bug fix: A deadline handler was run without interrupts enabled for a
1026 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1027 in infinitely spinning, non-killable threads.
1028 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1029 before reaching the erring stack frame.
1030 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1031 real power. (launchpad bug lp#525949)
1032 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1033 GENCGC platforms. (launchpad bug lp#529014)
1034 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1035 (launchpad bug lp#525916)
1036 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1037 (Thanks to Robert Goldman)
1039 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1040 * optimization: ROUND with a single single-float or double-float argument
1041 is properly inlined when possible.
1042 * optimization: Slightly better code is generated for integer<->float
1043 conversions and for single-float<->double-float conversions on x86-64.
1044 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1045 code for 32-bit and 64-bit rotations on x86-64.
1046 * bug fix: The install script changes the ownership of directories as well
1047 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1048 launchpad bug lp#508485)
1049 * bug fix: TRUNCATE with a single single-float or double-float argument is
1050 properly inlined when possible. (launchpad bug lp#489388)
1051 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1052 no longer causes a compiler error on x86 and ppc.
1053 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1054 always relative to *READTABLE* rather than the passed argument.
1056 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1057 * minor incompatible change: threading support is now enabled by default
1059 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1061 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1062 are now caught and reported just like errors during macroexpansion.
1063 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1064 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1065 * enhancement: ASDF systems can now depends on SB-QUEUE.
1066 * fixes and improvements related to Unicode and external formats:
1067 ** bug fix: error handling and restart usage in the ucs-2 external format
1069 ** there is now an implementation of the ucs-4 external format.
1070 ** the utf-16 and utf-32 external formats are supported.
1071 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1072 in the environment. setenv() and unsetenv() are also provided. (reported by
1073 Fare Rideau; launchpad bug lp#460455)
1074 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1075 loading. This ensures sensible errors for .FASL files from other
1076 implementations on case-insensitive filesystems. (reported by Willem
1077 Broekema; launchpad bug lp#489417)
1078 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1079 Willem Broekema; launchpad bug lp#489698).
1080 * bug fix: some minor code rearrangements to reenable warning-free building
1081 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1082 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1084 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1087 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1088 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1089 * improvement: support O_LARGEFILE access to files larger than 2GB on
1090 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1091 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1092 definitions for methods specializing on the passed class itself.
1093 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1094 definitions for methods specializing on the passed class itself, or on
1096 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1097 about itself during the build (e.g. for M-? in Slime), if this flag is
1098 enabled in customize-target-features.lisp. This will increase the core
1099 size by about 5-6mb, though, so it's mostly interesting to SBCL
1101 * new feature: various GENCGC tuning parameters have been experimentally
1102 documented and exported from SB-EXT. See documentation for details.
1103 * fixes and improvements related to Unicode and external formats:
1104 ** the Unicode character database has been upgraded to the
1105 Unicode 5.2 standard, giving names and properties to a number of new
1106 characters, and providing a few extra characters with case
1108 ** improvement: restarts for providing replacement input/output on coding
1109 errors for fd-stream external formats.
1110 ** improvement: where :<encoding> is a keyword corresponding to an
1111 external format the system supports, it is now possible to specify
1112 (:<encoding> :replacement <character>) as an external format which will
1113 automatically substitute <character> on encoding or decoding errors for
1114 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1116 ** improvement: the file streams underlying the standard streams (such as
1117 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1118 which uses the replacement mechanism to handle encoding errors,
1119 preventing various infinite error chains and unrecoverable I/O
1121 ** minor incompatible change: the utf-8 external format now correctly
1122 refuses to encode Lisp characters in the surrogate range (char-codes
1123 between #xd800 and #xdfff).
1124 ** fix a typo preventing conversion of strings into octet vectors
1125 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1127 ** fix a bug in the octet multibyte handling of decoding errors and the
1128 USE-VALUE restart. (launchpad bug lp#314939)
1129 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1130 restart on fd-stream decoding errors.
1131 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1132 error is near the end of file.
1133 ** fix a double-error case in unibyte octet conversions, when the first
1134 use of USE-VALUE is ignored.
1135 ** fix bugs in handling of undefined code points in unibyte encodings.
1136 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1137 streams after an UNREAD-CHAR.
1138 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1139 object is allocated in a boxed region of dynamic space.
1140 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1141 fork with multiple Lisp threads running is made, instead of going
1142 ahead with unpredictable consequences. (reported by Leslie Polzer)
1143 * bug fix: uses of slot accessors on specialized method parameters within
1144 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1145 error while finalizing the class. This fix may cause classes with slot
1146 accessors to be finalized later than previously. (reported by Lars Rune
1147 Nøstdal; launchpad bug lp#473699)
1148 * bug fix: restore buildability on the MIPS platform. (regression from
1149 1.0.30.38, reported by Samium Gromoff)
1150 * bug fix: inspecting closures is less likely to fail with a type error.
1151 * bug fix: no timer starvation when setting the system clock back.
1152 (launchpad bug lp#460283)
1153 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1154 standard pprint dispatch table as specified by CLHS.
1155 * bug fix: give CLISP a hint about a type declaration to enable it to build
1156 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1158 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1159 (reported by Attila Lendvai; launchpad bug lp#310132)
1160 * bug fix: distinguish in type specifiers between arrays that might be
1161 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1162 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1163 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1164 * bug fix: setting the value of a symbol-macro within a method in the
1165 presence of type declarations works properly again. (reported by Iban
1166 Hatchondo; launchpad bug lp#485019)
1168 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1169 * optimization: faster FIND and POSITION on strings of unknown element type
1170 in high SPEED policies. (thanks to Karol Swietlicki)
1171 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1173 * improvement: better error signalling for bogus parameter specializer names
1174 in DEFMETHOD forms (reported by Pluijzer)
1175 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1177 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1179 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1180 removes previous default initargs (reported by Lars Rune Nøstdal and
1182 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1183 lambda-lists. (reported by Peter Seibel)
1184 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1185 correctly when starting from an executable core without saved runtime
1186 options (reported by Faré Rideau, thanks to Zach Beane)
1187 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1188 an optimization note instead. (reported by Martin Cracauer)
1189 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1190 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1191 new process group if it doesn't need to share stdin with the sbcl
1192 process. (thanks to Leslie Polzer)
1193 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1194 (reported by Stanislaw Halik)
1196 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1197 * improvement: stack allocation is should now be possible in all nested
1198 inlining cases: failure to stack allocate when equivalent code is manually
1199 open coded is now considered a bug.
1200 * improvements related to Unicode:
1201 ** the Unicode character database has been upgraded to the
1202 Unicode 5.1 standard, giving names and properties to a number of new
1203 characters, and providing a few extra characters with case
1205 ** the system now recognizes and produces names for Unicode Hangul
1206 syllable characters.
1207 ** the EBCDIC-US external-format is now supported for octet operations
1208 (as well as for stream operations).
1209 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1210 be used to output toplevel compile-time effects into a separate .CFASL
1212 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1213 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1215 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1217 * optimization: division of floating point numbers by constants uses
1218 multiplication by reciprocal when an exact reciprocal exists.
1219 * optimization: multiplication of single- and double-floats floats by
1220 constant two has been optimized.
1221 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1222 sufficient type information is available. (thanks to Leslie Polzer)
1223 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1224 known structure objects are as efficient as defstruct generated accessors.
1225 * optimization: unused vector creation can now be optimized away.
1226 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1227 * improvement: a STYLE-WARNING is signalled when a generic function
1228 clobbers an earlier FTYPE proclamation.
1229 * improvement: the compiler is able to track the effective type of
1230 generic function across method addition and removal even in the
1231 absence of an explicit DEFGENERIC.
1232 * improvement: DESCRIBE now reports on symbols naming undefined
1233 but assumed or declared function as well.
1234 * improvement: recompilation of systems using SB-GROVEL now works
1235 (thanks to Leslie Polzer)
1236 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1237 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1239 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1240 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1241 well as user defined declaration names.
1242 ** VARIABLE-INFORMATION is now aware of alien variables.
1243 * improvement: improved address space layout on OpenBSD (thanks to Josh
1245 * improvement: pretty-printing of various Lisp forms has been improved
1246 (thanks to Tobias Rittweiler)
1247 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1248 unused were deleted in safe code. (reported by John Fremlin)
1249 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1251 * bug fix: some out-of-line array predicates were missing (reported by
1253 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1255 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1256 (thanks to Larry D'Anna)
1257 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1258 as well. (reported by Josh Elsasser)
1259 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1260 leading to possible attempts to delete the same file twice. See docstring
1261 on DELETE-FILE for details. (reported by John Fremlin)
1262 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1263 designator argument, rather than its truename. (reported by Luis
1265 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1266 information about some array types. (thanks to Luis Oliveira)
1267 * bug fix: moderately complex combinations of inline expansions could
1268 be miscompiled if the result was declared to be dynamic extent.
1269 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1270 form (+ <variable> <integer>) were miscompiled under certain
1272 * bug fix: in some cases no compiler note about failure to stack allocate
1273 was emitted, even if the objects were in fact heap allocated.
1274 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1275 allocation could cause objects users might reasonably expect to
1276 be heap allocated to be stack allocated.
1277 * bug fix: DESCRIBE signalled an error for generic functions under
1278 certain circumstances. (thanks to Leslie Polzer)
1279 * bug fix: Fixed spelling of an error message.
1281 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1282 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1283 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1284 of SB-THREAD:THREAD-ERROR-THREAD.
1285 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1286 * new feature: docstrings for local and anonymous functions are no longer
1287 discarded. (thanks to Leslie Polzer)
1288 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1289 values in other threads.
1290 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1291 about object allocation.
1292 * optimization: division of a real float by a complex float is implemented
1293 with a specialised code sequence.
1294 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1295 keywords is an order of magnitude faster.
1296 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1297 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1298 methods, and similarly for non-standard metaclass classes as long as there
1299 are no methods additional on MAKE-INSTANCE.
1300 * optimization: more efficient type-checks for FIXNUMs when the value
1301 is known to be a signed word on x86 and x86-64.
1302 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1303 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1305 * optimization: compiler is smarter about delegating argument type checks to
1307 * optimization: several character functions are now compiled somewhat more
1308 efficiently. (reported by Lynn Quam)
1309 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1310 * improvement: less unsafe constant folding in floating point arithmetic,
1311 especially for mixed complex/real -float operations.
1312 * optimization: constant double and single floats are stored in native
1313 unboxed format on x86[-64].
1314 * optimization: smarter code for arithmetic operations with constant floats,
1315 complex floats, or integers on x86[-64].
1316 * optimization: smarter code for conjugate/multiplication of float complexes
1317 and abs/negate of floats on x86-64.
1318 * optimization: more efficient complex float and real float operations on
1320 * improvement: complex float division is slightly more stable.
1321 * improvement: DESCRIBE output has been reworked to be easier to read and
1322 contains more pertinent information.
1323 * improvement: failure to provide requested stack allocation compiler notes
1324 provided in all cases (requested stack allocation not happening without a
1325 note being issued is now considered a bug.)
1326 * bug fix: SB-POSIX exports the documented types and functions
1327 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1328 types. (reported by "abhi")
1329 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1330 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1331 (thanks to Paul Khuong)
1332 * bug fix: looping around HANDLER-CASE could silently consume stack space
1333 on each iteration. (reported by "foobar")
1334 * bug fix: better error signalling when calls to functions seeking elements
1335 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1336 (reported by Tobias Rittweiler)
1337 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1338 directory components now works as it used to. (various prolems reported by
1339 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1340 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1341 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1342 * bug fix: bogus undefined variable warnings from fopcompiled references to
1343 global variables. (thanks to Lars Rune Nøstdal)
1344 * bug fix: foreign function names should now appear in backtraces on
1345 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1346 * bug fix: SETF compiler macro documentation strings are not discarded
1348 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1349 (thanks to Alex Plotnick)
1350 * bug fix: SLEEP accepts large integer arguments, truncating them to
1351 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1352 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1353 * bug fix: compiler notes for expensive slot type checks could be emitted
1354 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1356 changes in sbcl-1.0.29 relative to 1.0.28:
1357 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1358 https://bugs.launchpad.net/sbcl
1359 Bugs can be reported directly there, or by sending email to
1360 sbcl-bugs@lists.sourceforge.net
1361 (no subscription required.)
1362 * minor incompatible change: under weak type checking policy integer
1363 types are weakened less aggressively.
1364 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1365 allowed to return, which causes SBCL to quit with exit status 0. Previously
1366 if the function returned with a small integer return value, that value
1367 was accidentally reused as the exit status.
1368 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1369 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1370 :HASH-FUNCTION argument. Refer to user manual for details.
1371 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1373 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1374 microseconds since the Unix epoch on all platforms.
1375 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1376 allows the compiler to safely elide boundedness checks for special
1378 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1379 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1380 efficiency measure for threaded platforms, but also valueable in
1382 * new feature: UNC pathnames are now understood by the system on Windows.
1383 * optimization: the compiler uses a specialized version of FILL when the
1384 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1386 * optimization: accesses to potentially non-simple arrays where element type
1387 is known are 50% faster.
1388 * optimization: compiler now generates faster array typechecking code.
1389 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1391 * optimization: multidimensional array accesses in the absence of type
1392 information regarding array rank are approximately 10% faster due to
1393 open coding of ARRAY-RANK.
1394 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1395 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1397 * optimization: result of call to VECTOR can now be stack allocated.
1398 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1399 as long as the resulting array is one-dimensional and has a known
1400 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1401 length of the list matches the known length of the vector does not
1402 allocate the list as an intermediate step. Ditto for VECTOR and simple
1404 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1405 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1406 known element type, and is known to be simple and one dimensional.
1407 * improvement: SBCL now emits a compiler note where stack allocation was
1408 requested but could not be provided (not in all cases, unfortunately)
1409 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1410 * improvement: pretty-printing loop has been implemented properly. (thanks
1411 to Tobias Rittweiler)
1412 * documentation: CLOS slot typechecing policy has been documented.
1413 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1414 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1415 pointer, leading to memory faults. (thanks to Bart Botta)
1416 * bug fix: better floating point exception handling on x86/OpenBSD.
1417 (thanks to Josh Elsasser)
1418 * bug fix: exit status from QUIT when called under --script was lost
1419 (reported by Hubert Kauker)
1420 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1421 same implementation of FILL to initialize the array, even if a more
1422 efficient one was available (reported by Stas Boukarev, thanks to
1424 * bug fix: potential miscompilation of array stack allocation on x86 and
1425 x86-64. (reported by Time Tossavainen)
1426 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1427 result in their subforms being treated as top level forms. (reported by
1429 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1430 than a machine register could leave garbage in the high bits of the
1431 result register (bug 316325).
1432 * bug fix: disable address space randomization Linux/x86-64 as well,
1433 not just x86-64. (reported by Ken Olum)
1434 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1435 generate incorrect code.
1436 * bug fix: #201; type inference for CONS and ARRAY types could derive
1437 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1438 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1439 could not be assigned to or bound with PROGV. (reported by Lorenz
1441 * bug fix: the value of CL:- in the inspector was the previous expression
1442 evaluated rather than the expression being evaluated.
1443 * bug fix: constants can no longer be locally declared special.
1444 * bug fix: signals delivered to threads started from foreign land (read:
1445 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1446 thread by blocking all signals and resignalling.
1447 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1448 from :INITFORM, if any.
1450 changes in sbcl-1.0.28 relative to 1.0.27:
1451 * a number of bugs in cross-compilation have been fixed, with the ultimate
1452 result that building under (at least) clisp should be much more reliable.
1453 * minor incompatible changes: echo-streams now propagate unread-char to the
1454 underlying input stream, and no longer permit unreading more than one
1456 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1457 frames, allowing for instance more reliable backtraces.
1458 * improvement: the debugger REPL can now reference lexical variables
1459 by name directly for code compiled with (DEBUG 3).
1460 * improvement: errors from malformed declarations now have better source
1461 paths associated with them. (thanks to Tobias Rittweiler)
1462 * optimization: faster local calls on x86/x86-64
1463 * bug fix: some error messages for out-of-bound array indexes confused the
1464 index and the bound. (thanks to Stas Boukarev)
1465 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1467 * bug fix: running regressions tests in shells without OSTYPE set now works.
1468 (reported by Harald Hanche-Olsen)
1469 * bug fix: more robust static space exhaustion signalling from
1470 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1471 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1472 docstring away instead of storing it under names such as (LAMBDA (X)).
1473 (reported by Leslie Polzer)
1474 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1475 (thanks to Ole Arndt for the patch)
1476 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1477 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1478 potentially-invalid effective methods in its cache.
1479 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1480 instances as well (thanks to Paul Khuong)
1481 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1482 SB-POSIX:WAITPID and their C equivalents.
1483 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1485 changes in sbcl-1.0.27 relative to 1.0.26:
1486 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1487 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1488 * improvement: the system either recovers from stack exhaustion or dies
1489 properly as opposed to leaving the user uncertain of whether the handler
1490 trampled on some random memory next to the stack or having to rely on
1491 --lose-on-corruption (which is still a good idea to use in production
1492 because stack exhaustion can happen in signal handlers which will likely
1494 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1495 1.0.25.37, reported by Harald Hanche-Olsen)
1496 * bug fix: work around signal delivery bug in darwin (regression from
1497 1.0.25.44, reported by Sidney Markowitz)
1498 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1500 changes in sbcl-1.0.26 relative to 1.0.25:
1501 * incompatible change: an interruption (be it a function passed to
1502 INTERRUPT-THREAD or a timer function) runs in an environment where
1503 interrupts can be enabled. The interruption can use
1504 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1505 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1506 potentially running out of stack. Keep in mind that in the absence
1507 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1508 acquiring a lock can enable interrupts.
1509 * incompatible change: GC-OFF and GC-ON are removed, as they were
1510 always unsafe. Use WITHOUT-GCING instead.
1511 * new feature: runtime option --disable-ldb
1512 * new feature: runtime option --lose-on-corruption to die at the
1513 slightest hint of possibly non-recoverable errors: running out of
1514 memory, stack, alien stack, binding stack, encountering a memory
1515 fault, etc. In the absence of --lose-on-corruption a warning is
1517 * enhancement: detect binding stack exhaustion
1518 * enhancement: detect alien stack exhaustion on x86/x86-64
1519 * improvement: generally more stable and reliable interrupt handling
1520 * improvement: there is a per thread interruption queue,
1521 interruptions are executed in order of arrival
1522 * improvement: a repeating timer reschedules itself when the it has
1523 finished, but expiration times are spaced equally. If an
1524 expiration time is in the past it will trigger after a short grace
1525 period that may give a chance to other things to run.
1526 * optimization: slightly faster gc on multithreaded builds
1527 * optimization: faster WITHOUT-GCING
1528 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1529 important locks so that the debugger/handler doesn't produce
1530 recursive errors or deadlock.
1531 * bug fix: real-time signals are not used anymore, so no more
1532 hanging when the system wide real-time signal queue gets full.
1533 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1535 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1536 * bug fix: fix random memory faults related to interrupts on alpha
1537 * bug fix: fix random memory faults related to interrupts on sparc
1538 * bug fix: fix deadlocks related to starting threads
1539 * bug fix: fix deadlines on locks on futex platforms
1540 * bug fix: restore errno in signal handlers
1541 * bug fix: fix deadlocks related to hash tables
1542 * bug fix: fix deadlocks in pcl
1544 changes in sbcl-1.0.25 relative to 1.0.24:
1545 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1546 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1547 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1548 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1549 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1550 better name and does not return values so stale on multiprocessor systems.
1551 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1553 * improvement: unithread builds keep track of MUTEX-VALUE.
1554 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1555 stream anymore making it thread safe to have a concurrent reader and
1556 a writer, for instance, in a pipe.
1557 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1558 arguments, making compiler-macros for SETF-functions able to inspect
1559 their constant arguments.
1560 * improvement: COMPILE-FILE reports times with millisecond accuracy
1561 (thanks to Luis Oliveira)
1562 * optimization: CHAR-CODE type derivation has been improved, making
1563 TYPEP elimination on subtypes of CHARACTER work better. (reported
1564 by Tobias Rittweiler, patch by Paul Khuong)
1565 * bug fix: setting alien structure fields of type struct by value now
1566 computes the right offset for the memory copy.
1567 * bug fix: compilation problem involving inlined calls to aliens with
1568 result type VOID. (reported by Ken Olum)
1569 * bug fix: #235a; sequential inline expasion in different policies no
1570 longer reuses the functional from the previous expansion site.
1571 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1572 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1573 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1574 cause an implied type redefinition. Regression from 1.0.21.29.
1575 * bug fix: sign-extension of small signed return values now works with C
1576 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1577 * improvements to the Windows port:
1578 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1579 Westfold, thanks to Rudi Schlatte)
1581 changes in sbcl-1.0.24 relative to 1.0.23:
1582 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1583 vector of a multidimensional SIMPLE-ARRAY.
1584 * new feature: the system now signals a continuable error if standard
1585 readtable modification is attempted. (thanks to Tobias Rittweiler)
1586 * new feature: DIRECTORY has been extended with a non-standard keyword
1587 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1588 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1589 has been robustified and documented better. (thanks to Robert Goldman)
1590 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1591 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1592 * tradeoff: constant FORMAT control strings are now compiled unless
1593 SPACE > SPEED (previously only when SPEED > SPACE.)
1594 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1596 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1598 * bug fix: lexical type declarations are now correctly reported by
1599 SB-CLTL2. (reported by Larry D'Anna)
1600 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1601 using UTF-8 as external format. (thanks to Luis Oliveira)
1602 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1603 are signalled correctly. (thanks to Stas Boukarev)
1604 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1605 designator. (thanks to Tobias Rittweiler)
1606 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1607 designator, and returns T instead of the function. (thanks to
1609 * bug fix: direct superclasses of STANDARD-CLASS and
1610 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1611 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1612 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1613 when no class with the named slot yet exists no longer causes a
1614 compile-time style-warning.
1615 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1616 in safe code. (reported by Didier Verna)
1617 * bug fix: #430; nested structure constructors can stack allocate.
1618 * bug fix: on some 64-bit platforms dynamic space size was truncated
1619 to #xffff0000 bytes. (reported by Benjamin Lambert)
1620 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1621 REPL unusable. (reported by Daniel Herring)
1622 * bug fix: return values of READ-SEQUENCE did not take :START into
1623 account on file streams, regressions since 1.0.12.22. (reported by
1624 Thomas Russ, patch by Paul Khuong)
1625 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1626 method specializer used to confuse permuation vector optimization.
1627 * bug fix: system inserted bogus implicit type declarations for local
1628 special variables in DEFMETHOD bodies.
1629 * bug fix: #354; duplicated frames in backtraces due to
1630 non-tail-call-optimized XEPs to functions with return type NIL
1632 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1633 initializes structure object slots according to DEFSTRUCT initforms,
1634 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1635 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1636 (reported by Bruno Haible and Stephen Wilson)
1637 * bug fix: #395; fill-pointer output streams used now support
1638 element-type BASE-CHAR as well.
1639 * bug fix: compiler error when attempting to derive return value of
1640 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1642 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1644 * bug fix: Mac OS X binaries should now be portable between Leopard
1647 changes in sbcl-1.0.23 relative to 1.0.22:
1648 * enhancement: when disassembling method functions, disassembly
1649 for the associated fast function is also produced.
1650 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1652 * optimization: printing with *PRINT-PRETTY* true is now more
1653 efficient as long as the object being printed doesn't require
1654 special handling by the pretty printer.
1655 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1656 now interact correctly with type declarations.
1657 * partial bug fix: PCL detects infinite recursion during wrapper
1658 validation. (thanks to Attila Lendvai)
1659 * bug fix: #426; nested function calls are inlined properly.
1660 Previously if FOO was an inline function, in calls of the form
1661 (FOO (FOO ...)) the outer call was not inlined.
1662 * bug fix: long long arguments passed in registers to alien
1663 functions on PowerPC Linux and NetBSD are now handled correctly
1664 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1666 changes in sbcl-1.0.22 relative to 1.0.21:
1667 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1668 for the shared object in the current directory, but passes the native
1669 namestring of the designated pathname to the operation system's shared
1670 object loading function as-it.
1671 * minor incompatible change: --disable-debugger toplevel option now takes
1672 effect before processing of initialization files and --eval or --load
1674 * new feature: new commandline argument: --script, which supports
1675 shebang lines. See documentation for details. (based on work by
1677 * new feature: SAVE-LISP-AND-DIE can save current values of
1678 --dynamic-space-size and --control-stack-size in the executable core,
1679 causing it to skip normal runtime option processing. See documentation
1680 for details. (thanks to Zach Beane)
1681 * enhancement: inoccous calls to EVAL or generic functions dispatching
1682 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1683 * enhancement: the system no longer resignals errors from --load and
1684 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1685 associated with the original error to be lost. (thanks to Ariel
1687 * enhancement: :DONT-SAVE keyword argument has been added to
1688 LOAD-SHARED-OBJECT for controlling interaction with
1689 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1690 the effects of an earlier LOAD-SHARED-OBJECT call.
1691 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1692 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1693 provided. (reported by Cedric St-Jean)
1694 * bug fix: circularity handling in the reader did not treat raw
1695 structure slots correctly. (reported by Cedric St-Jean)
1696 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1697 file descriptors when there were none.
1698 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1699 was broken. (reporteed by Willem Broekema)
1700 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1701 pathnames without a directory.
1702 * bug fix: COMPILE-FILE did not warn about undefined variable
1703 references at toplevel, and LOAD of the resulting fasl did
1704 not signal an error.
1705 * bug fix: functions with non-required arguments used to end up with
1706 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1707 * bug fix: redefining a function with non-required arguments didn't
1708 update the system's knowledge about its call signature properly.
1709 * bug fix: fixed #431; incompatible alien record type redefinitions
1710 are detected and handled. (reported by Neil Haven)
1711 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1712 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1714 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1715 after alien stack frames.
1716 * bug fix: strings passed to mk{s,d}temp lacked null termination
1718 changes in sbcl-1.0.21 relative to 1.0.20:
1719 * new feature: the compiler is able to track the effective type of a
1720 generic function across method addition and removal.
1721 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1722 appropriately typed structure slots without locking.
1723 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1724 information like those gathered by TIME using a programming-friendly
1726 * new feature: TIME reports time taken even if the form performs a
1727 non-local transfer of control.
1728 * enhancement: reduced conservativism on GENCGC platforms: on
1729 average 45% less pages pinned (measured from SBCL self build).
1730 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1731 mutate constant symbols or violate declaimed type of the symbol.
1732 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1733 sleeping on the semaphore in heavily contested semaphores.
1734 * bug fix: semaphores and condition variables were not interrupt
1736 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1737 owned by other threads anymore.
1738 * bug fix: FIND on lists called KEY outside the specified
1739 subsequence. (reported by budden)
1740 * bug fix: LOG doesn't use single-float intermediate results when
1741 given mixed integer and double-float arguments, leading to better
1742 precision. (reported by Bob Felts)
1743 * bug fix: LOG with base zero returned values of inconsistent type.
1745 changes in sbcl-1.0.20 relative to 1.0.19:
1746 * minor incompatible change: OPTIMIZE qualities
1747 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1748 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1749 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1750 * documentation: some slot access efficiency guidelines have been
1751 added to the user manual.
1752 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1753 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1754 as ASSOC and MEMEBER.
1755 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1756 to more efficient EQ-comparison versions more often.
1757 * optimization: enhanced derivation of DOLIST iteration variable type
1759 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1761 * optimization: runtime lookup of function definitions can be
1762 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1763 * optimization: compiler is able to derive the return type of
1764 (AREF (THE STRING X) Y) as being CHARACTER.
1765 * optimization: CLRHASH on empty hash-tables no longer does pointless
1766 work. (thanks to Alec Berryman)
1767 * optimization: REPLACE deftransforms don't punt when :START1 or
1769 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1770 no longer emits a code deletion note. (reported by Andrew
1772 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1773 functions with an odd number of &OPTIONAL arguments, a &REST
1774 argument, and one or more &KEY arguments at the call site.
1775 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1776 arguments appeared at call sites as well.
1777 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1778 READ-LINE &co can no longer read from them afterwards. (reported
1780 * bug fix: fixed #427: unused local aliens no longer cause compiler
1781 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1783 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1784 alien-stack leakage. (reported by Andy Hefner)
1785 * bug fix: PROGV signals an error when an attempt to violate declared
1786 type of a variable or bind a constant is made.
1787 * bug fix: SET signals an error when an attempt to violate declared
1788 type of a variable is made.
1789 * bug fix: restart computation during the execution of a restart
1790 test function no longer causes infinite recursion. (reported by
1792 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1793 signals an error. (thanks to Pierre Mai)
1794 * bug fix: EXPORT left symbol unexported in conflict situations.
1795 (thanks to Michael Weber)
1796 * bug fix: correctly handle name conflicts involving CL:NIL.
1797 (thanks to Michael Weber)
1798 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1799 conflicts arising from USEing package with conflicting symbols
1800 correctly. (thanks to Michael Weber)
1802 changes in sbcl-1.0.19 relative to 1.0.18:
1803 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1804 warnings that go otherwise unhandled will be muffled if they are
1805 of the type that's the value of this variable.
1806 * optimization: stack allocation is slightly more efficient on x86
1808 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1809 where a raw slot always is initialized using the initform whose
1810 type is not know sufficiently well a compile-time are now compiled
1811 correctly. (reported by John Morrison)
1812 * bug fix: compiler no longer makes erronous assumptions in the
1813 presence of non-foldable SATISFIES types.
1814 * bug fix: stack analysis missed cleanups of dynamic-extent
1815 arguments in non-let-converted calls to local functions.
1816 * improvements to the Windows port:
1817 ** adjusted address spaces for building on both Win32 and
1818 Win64. (thanks for John Connors)
1819 * fixed some bugs revealed by Paul Dietz' test suite:
1820 ** interval arithmetic during type derivation used inexact integer
1821 to single-float coercions.
1822 ** arithmetic operations involving large integers and single
1823 floats give the same results in compiled and interpreted code.
1824 ** deriving the result type of COERCE no longer signals an error
1825 if the derived type of the second argument is a MEMBER type
1826 containing invalid type specifiers.
1827 ** ADJOIN with constant NIL as second argument works correctly.
1828 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1830 changes in sbcl-1.0.18 relative to 1.0.17:
1831 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1832 profiles only the current thread.
1833 * minor incompatible change: changes to SYMBOL-VALUE of constants
1834 defined with DEFCONSTANT now signal an error.
1835 * enhancement: SB-SPROF now has support for wallclock profiling,
1836 and is also able to profile specific threads. REPORT output
1837 has also additional sorting options.
1838 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1840 * optimization: structure allocation has been improved
1841 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1842 ** out of line constructors are ~10% faster.
1843 ** inline constructors are ~15% faster.
1844 ** inline constructors are capable of dynamic extent allocation
1845 (generally on x86 and x86-64, in some cases on other platforms
1847 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1849 * optimization: file compiler is now able to coalesce non-circular
1850 lists, non-base strings, and bit-vectors. Additionally, constants
1851 are never referenced through SYMBOL-VALUE at runtime.
1852 * optimization: code defining methods on PRINT-OBJECT (and other
1853 generic functions in the COMMON-LISP package) now loads faster.
1854 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1856 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1857 fasl is now deleted. (reported by Attila Lendvai)
1858 * bug fix: READ-LINE always returned NIL for the last line in files.
1859 (reported by Yoshinori Tahara)
1860 * bug fix: more accurate disassembly annotations of foreign function
1861 calls. (thanks to Andy Hefner)
1862 * bug fix: trimming non-simple strings and non-string string
1863 designators when the there is nothing to trim works properly.
1864 (thanks to James Knight)
1865 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1866 (thanks to Travis Cross)
1867 * fixed some bugs revealed by Paul Dietz' test suite:
1868 ** NIL is a valid function name (regression at 1.0.13.38)
1869 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1870 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1871 fill pointers properly (regression at 1.0.12.23)
1872 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1873 displacement indices properly (regression at 1.0.12.23)
1875 changes in sbcl-1.0.17 relative to 1.0.16:
1876 * temporary regression: user code can no longer allocate closure
1877 variable storage on stack, due to bug 419 without explicitly
1878 requesting it. Please consult sbcl-devel for advice if you need to
1879 use this feature in the meanwhile.
1880 * new feature: runtime argument --control-stack-size can be used to
1881 adjust thread default control stack size.
1882 * enhancement: improved TIME output
1883 ** all times are reported using the measured accuracy (milliseconds
1884 for real and GC times, microseconds for everything else.)
1885 ** processor cycle counts on x86 and x86-64.
1886 ** interpreted forms are counted for both evaluator modes.
1887 ** number of lambdas converted by the compiler is reported.
1888 ** CPU percentage report (computed from real and total run time.)
1889 ** more comprehensive run time reporting, using a condenced format
1890 ** interperted form, lambda, and page fault counts are omitted
1892 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1894 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1895 * optimization: two argument forms of LAST are upto ~10% faster
1896 in normal SPEED policies.
1897 * optimization: NCONC no longer needs to heap cons its &REST list
1898 in normal SPEED policies.
1899 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1900 to Sidney Markowitz)
1901 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1902 regression since 1.0.9.1. (thanks to Eric Marsden)
1903 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1904 since 1.0.15.36. (thanks to Paul Khuong)
1905 * bug fix: LAST when always returned the whole list when given a bignum
1906 as the second argument.
1907 * bug fix: dynamic extent allocation of nested lists and vectors
1908 could leak to otherwise accessible parts.
1909 * bug fix: invalid optimization of heap-allocated alien variable
1911 * bug fix: fasl header checking is less vulnerable to different
1912 platform word lengths.
1913 * bug fix: more correct assembler syntax for GNU binutils
1914 2.18.50.0.4 support. (thanks to Marijn Schouten)
1915 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1917 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1918 declarations) successfully. (reported by Attila Lendvai)
1920 changes in sbcl-1.0.16 relative to 1.0.15:
1921 * minor incompatible change: revert the changes to sb-posix's error
1922 signaling added in 1.0.14.
1923 * minor incompatible change: change PROBE-FILE back to returning
1924 NIL whenever we can't get a truename, as was the case before 1.0.14.
1925 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1926 inherits from ERROR instead of just CONDITION.
1927 * new feature: SB-INTROSPECT can provide source locations for instances
1928 as well. (thanks to Tobias Rittweiler)
1929 * optimization: binding special variables now generates smaller code
1930 on threaded platforms.
1931 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1932 and cases where no :TEST is given but the compiler can infer that
1933 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1934 * optimization: better LOGNOT on fixnums.
1935 * optimization: modular arithmetic for a particular requested width
1936 is implemented using a tagged representation unless a better
1937 representation is available.
1938 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1939 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1940 for wellformedness and returns a specialized vector. (reported by
1941 Francois-Rene Rideau)
1942 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1943 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1944 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1945 unscheduling timer at the same time as another timer fires.
1946 * bug fix: don't reschedule timers for dead threads.
1947 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1948 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1949 bogus errors if select() was interrupted.
1950 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1952 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1953 * enhancement: cleaner backtraces for interactive interrupts, as
1954 well as other cases where the interesting frames used to be
1955 obscured by interrupt handling frames.
1956 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1957 now supported, and tracing a whole package using (TRACE "FOO") now
1958 traces SETF-functions as well.
1959 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1960 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1961 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1962 * unreadably printed representation of hash-tables now includes
1964 * bug fix: partially fixed #188: type propagation from assignments
1965 is now more efficient.
1966 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1967 'DOUBLE-FLOAT) are not flushable.
1968 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1969 full address of the object, and none of the tag bits.
1970 * bug fix: readably printing hash-tables now respects other printer
1971 control variables. (reported by Cedric St-Jean)
1972 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1973 keyword with MAKE-HASH-TABLE.
1974 * bug fix: export SB-POSIX:MKSTEMP.
1975 * bug fix: SORT was not interrupt safe.
1976 * bug fix: XREF accounts for the last node of each basic-block as
1978 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1979 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1980 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1981 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1982 create obsolete instances in the case of redefinition or
1983 obsoletion of a superclass. (thanks to Andy Hefner)
1984 * bug fix: Support for the Alpha architecture has been revived; it had
1985 suffered somewhat from lack of maintenance since sbcl-1.0.
1986 * improvements to the Windows port:
1987 ** The system detects the codepage to use at startup, instead of
1988 using the value from the saved core. (thanks to Kei Suzuki)
1990 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1991 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1992 (see documentation for details.)
1993 * revived support for OpenBSD (contributed by Josh Elsasser)
1994 * partially fixed bug #108: ROOM no longer suffers from occasional
1995 (AVER (SAP= CURRENT END)) failures.
1996 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1997 bodies no longer cause a WARNING to be signalled. (reported by
1999 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2000 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2001 the bug in TRUNCATE.) (reported by Michael Weber)
2002 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2003 no samples. (reported by Andy Hefner)
2004 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2005 no longer appear as (NIL ...) frames in backtraces.
2006 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2007 is now actually exported from SB-EXT as documented. (reported by
2009 * bug fix: sb-aclrepl now correctly understands how to inspect
2010 single-floats on 64-bit platforms where single-floats are not boxed.
2011 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2012 yet been finalized. (reported by Levente Meszaros)
2013 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2014 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2015 SBCL-specific optimize qualities.
2017 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2018 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2019 an executable in the search path, and does so in the child
2020 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2021 been removed; it can be found in the CVS history, for somebody who
2022 needs that search behavior (see the manual).
2023 * minor incompatible change: compiler policy re. weakening type
2024 checks has changed: now type checks are weakened only if SAFETY < 2
2026 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2027 unparsing of directory pathnames as files. Analogously,
2028 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2029 filename to parse into a directory pathname.
2030 * enhancement: implicit generic function creation now signals a
2031 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2032 users can bind handlers for and muffle around calls to LOAD.
2033 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2034 to be used (using the default stream external format), and allows
2035 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2036 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2037 strings and vectors whose element-type or simplicity is not fully
2038 known at compile-time.
2039 * optimization: STRING-TRIM and related functions no longer allocate
2040 a new string when no trimming needs to be performed. These functions
2041 are also faster than before when the input string has been declared
2043 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2044 * optimization: READ-LINE is significantly faster for files containing
2046 * optimization: non-open coded uses of character comparison operators
2047 (e.g. char=) no longer cons when called with more than one parameter
2048 on platforms supporting dynamic-extent allocation.
2049 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2050 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2051 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2053 * bug fix: some sequence functions elided bounds checking when
2055 * bug fix: too liberal weakening of union-type checks when SPEED >
2057 * bug fix: more bogus fixnum declarations in ROOM implementation
2060 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2061 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2062 :SYNCHRONIZED argument, which makes the hash-table safe for
2063 concurrent accesses (but not iteration.) See also:
2064 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2065 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2066 * optimization: CONCATENATE on strings is an order of magnitude faster
2067 in code compiled with (> SPEED SPACE).
2068 * optimization: SUBSEQ is ~50% faster on lists.
2069 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2070 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2071 END is smaller then START.
2072 * bug fix: SB-PROFILE will no longer report extra consing for nested
2073 calls to profiled functions.
2074 * bug fix: ROOM implementation had bogus fixnum declarations which
2075 could cause type-errors when calling ROOM on large images.
2076 * bug fix: if file compilation is aborted, the partial fasl is now
2077 deleted, and COMPILE-FILE returns NIL as the primary value.
2078 * bug fix: number of thread safety issues relating to SBCL's internal
2079 hash-table usage have been fixed.
2080 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2081 be returned from its body when the values were being returned
2082 using unknown-values return convection and the W-P-O was wrapped
2083 inside an UNWIND-PROTECT.
2084 * bug fix: sb-posix should now compile again under Windows, enabling
2085 slime to work again.
2087 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2088 * incompatible change: hash-table accessor functions are no longer
2089 automatically protected by locks. Concurrent accesses on the same hash-table
2090 from multiple threads can give inconsistent results or even corrupt the
2091 hash-table completely. Multi-threaded applications should do their own
2092 locking at the correct granularity. In the current implementation it is
2093 still safe to have multiple readers access the same table, but it's not
2094 guaranteed that this property will be maintained in future releases.
2095 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2096 and will signal an error at runtime.
2097 * enhancement: SB-THREAD package now exports a semaphore interface.
2098 * enhancement: CONS can now stack-allocate on x86 and
2099 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2101 * enhancement: nested lists can now be stack allocated on
2102 platforms providing stack allocation support.
2103 * enhancement: dynamic-extent support has been extended to support
2104 cases where there are multiple possible sources for the stack
2106 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2107 if the mutex is uncontested on Linux.
2108 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2109 as specified by the CLHS. (thanks to Tobias Rittweiler)
2110 * bug fix: NaN comparison now works on x86-64.
2111 * bug fix: CLOSE :ABORT T on a stream with pending output now
2113 * bug fix: instances of non-standard metaclasses using standard
2114 instance structure protocol sometimes missed the slot type checks
2116 * bug fix: known functions can be inlined in high-debug code.
2118 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2119 * minor incompatible change: the MSI installer on Windows no longer
2120 associates .lisp and .fasl files with the installed SBCL.
2121 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2122 on Windows. (thanks to Luis Oliviera)
2123 * new feature: SB-CLTL2 contrib module now implements
2124 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2125 * optimization: scavenging weak pointers is now more efficient,
2126 requiring O(1) instead of O(N) per weak pointer to identify
2127 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2128 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2129 method bodies using constant slot-names when the first argument is
2130 a specializer parameter for the method.
2131 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2132 names, when the class of the instance is a direct instance
2133 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2134 as slow as the constant slot-name case.)
2135 * optimization: member type construction is now O(N) instead
2137 * optimization: UNION and NUNION are now O(N+M) for large
2138 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2140 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2141 now more readable in environments like Slime which display it.
2142 (thanks to Tobias C. Rittweiler)
2143 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2144 was able to infer the correct argument type for the object on which
2145 the CAS operation was being performed.
2146 * bug fix: copy propagation interfered with parallel assignment
2147 semantics in local calls. (reported by Paul Khuong)
2148 * bug fix: the signed modular fixnum shift compiled to wrong code on
2149 x86 and x86-64. (spotted by a slight modification to some of
2152 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2153 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2154 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2155 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2157 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2158 and generic function now print the object identity for anonymous
2159 instances. (thanks to Attila Lendvai)
2160 * enhancement: as an extension to MOP, SBCL now supports SETF of
2161 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2162 (thanks to Attila Lendvai)
2163 * enhancement: sb-cover has an alternate annotation mode which puts
2164 the form annotations at the car of the form, instead of annotating
2165 it completely. The benefit of this mode is that it shows better
2166 which forms were instrumented by the compiler.
2167 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2168 by printer control variables. (reported by Dan Corkill)
2169 * bug fix: system leaked memory when delayed output was performed by
2170 the OS in smaller chunks then expected. (thanks to David Smith)
2171 * bug fix: system leaked memory when file streams were not closed
2173 * bug fix: large objects written to slow streams that were modified
2174 after the write could end up with the modified state written to
2175 the underlying file descriptor.
2176 * bug fix: multiple threads operating in parallel on the same stream
2177 could cause buffer-overflows.
2178 * bug fix: source location information is stored correctly
2179 (broken since 1.0.6). This bug would generally show up as the
2180 Slime debugger highlighting the wrong form when the sldb-show-source
2182 * bug fix: Branch forms are again annotated as branches in the sb-cover
2184 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2185 on x86-64. (reported by Gregory Vanuxem)
2186 * bug fix: EQUALP could return wrong results for structures with raw
2187 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2188 word). (reported by Vjacheslav Fyodorov)
2189 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2192 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2193 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2194 atomic compare-and-swap operations on threaded platforms.
2195 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2196 allows assigning a global minimum value to optimization qualities
2197 (overriding proclamations and declarations).
2198 * enhancement: closed over variables can be stack-allocated on x86
2200 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2202 * optimization: slot definition lookup is now O(1). This speeds up
2203 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2204 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2205 * optimization: ASSOC and MEMBER can now be open-coded for all
2206 combinations of keyword arguments when second argument is constant
2207 and SPEED >= SPACE. In other cases a specialized version is
2209 * bug fix: using obsoleted structure instances with TYPEP and
2210 generic functions now signals a sensible error.
2211 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2212 (reported by Kristoffer Kvello)
2213 * bug fix: backtrace construction is now more careful when making
2214 lisp-objects from pointers on the stack, to avoid creating bogus
2215 objects that can be seen by the GC.
2216 * bug fix: defaulting of values in contexts expecting more than 7
2217 variables now works on x86-64. (reported by Christopher Laux)
2218 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2220 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2221 as the property-list of a symbol.
2222 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2223 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2224 situations requested, are once again file-compileable. (reported
2227 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2228 * MOP improvement: support for user-defined subclasses of
2229 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2230 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2231 the expansion of DEFMETHOD, is responsible for generating a form
2232 which creates a list of specializers when evaluated. Additional
2233 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2234 debugging and introspective support.
2235 * minor incompatible change: the (unsupported) spinlock interface
2236 has changed: free spinlock now has the value NIL, and a held spinlock
2237 has the owning thread as its value.
2238 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2239 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2241 * enhancement: name of a socket-stream is now "a socket" instead of
2242 "a constant string".
2243 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2244 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2245 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2246 for generic functions. (Thanks to Tobias C. Rittweiler)
2247 * optimization: bignum printing speed has been improved by 20-40%
2248 (depending on the bignum size.)
2249 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2251 * bug fix: the cache used by the CLOS to store precomputed effective
2252 methods, slot offsets, and constant return values is now thread and
2254 * bug fix: generic function dispatch function updating is now thread
2255 and interrupt safe (in the sense that the known issues have been
2257 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2258 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2259 * bug fix: asdf systems with dependencies to the SB-POSIX or
2260 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2261 * bug fix: interrupt safety of applicable method computation has been
2264 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2265 * new contrib: sb-cover, an experimental code coverage tool, is included
2266 as a contrib module.
2267 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2268 significantly faster.
2269 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2270 produce more efficient code on x86-64 if the compiler can determine
2271 that (+ INDEX <constant>) does not require a bounds check and FOO
2272 has an element type at least 8 bits wide.
2273 * enhancement: a new, experimental synchronous timeout facility is
2274 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2275 * enhancement: when a symbol name conflict error arises, the
2276 conflicting symbols are always printed with a package prefix.
2277 (thanks to Kevin Reid)
2278 * enhancement: stepping is now once again supported on the SPARC and
2279 MIPS platforms. (It is also now more likely to work on CheneyGC
2281 * enhancement: sb-sprof can now also track and report accurate call
2283 * bug fixes: the treatment of non-standard subclasses of
2284 SB-MOP:SPECIALIZER is more correct.
2285 * incompatible change: PURIFY no longer copies the data from the
2286 dynamic space into the static and read-only spaces on platforms
2287 that use the generational garbage collector
2288 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2290 * bug fix: GC race condition occasionally resulting in crashes with
2291 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2293 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2295 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2296 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2297 * bug fix: an asynchronous interrupt could previously leave the
2298 system running with GC inhibited.
2299 * bug fix: a DECLARE form evaluated at top-level now causes an error
2300 rather than silently (or verbosely) returning NIL.
2301 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2302 result in a error being signalled due to source form lookup errors.
2303 (reported by Peter Graves)
2305 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2306 * incompatible change: removed writer methods for host-ent-name,
2307 host-ent-addresses -- changing the values did not update the DNS
2309 * minor incompatible change: changed experimental JOIN-THREAD interface
2310 * documentation: the manual now lists reader and writer methods
2311 in class slot documentation sections. (thanks to Richard M Kreuter)
2312 * documentation: unwinding from asyncronous events has been
2313 documented as unsafe.
2314 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2315 in multithreaded application code.
2316 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2317 platforms. (thanks to James Anderson for the optimization hint)
2318 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2320 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2321 variants no longer cons.
2322 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2323 their NOT- variants no longer cons.
2324 * optimization: EQUAL hash tables no longer use SXHASH for objects
2325 of all data types, but instead use an EQL hash for types for which
2326 EQUAL is the same as EQL.
2327 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2328 are significantly faster.
2329 * optimization: new STRING-OUTPUT-STREAM implementation is much
2330 faster for large outputs and conses 30% less on average.
2331 * enhancement: XREF information is now collected for references made
2332 to global variables using SYMBOL-VALUE and a constant argument.
2333 * enhancement: SIGINT now causes a specific condition
2334 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2335 * bug fix: FILE-POSITION used to signal an error in some cases where
2336 ANSI requires it to return NIL.
2337 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2338 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2339 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2341 * bug fix: bad type declaration in the CLOS implementation has
2342 been fixed. (reported by James Anderson)
2343 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2344 (thanks to Lutz Euler)
2345 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2346 required by the CLHS. (reported by Samium Gromoff)
2347 * bug fix: dead unbound variable references now signal an error.
2348 (reported by Marco Monteiro)
2349 * bug fix: / with an unused value was being deleted in safe code.
2350 (thanks to Marco Monteiro and Kevin Reid)
2351 * bug fix: number of characters that can be written onto a single
2352 line in a file is unlimited.
2353 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2354 been fixed by inhibiting interrupts for when GC is disabled.
2355 * bug fix: some interrupt safety issues with GETHASH, (SETF
2356 GETHASH), CLRHASH and REMHASH have been fixed.
2357 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2358 specifier no longer causes infinite recursion.
2359 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2360 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2361 * bug fix: an &environment argument with the correct variable information
2362 is passed to macros that are expanded during byte compilation.
2363 (reported by Samium Gromoff)
2364 * bug fix: a logic error was causing the hash function for bignums to
2365 have excessive amounts of collisions. (reported by Faré Rideau)
2366 * bug fix: modifying the contents of an array could change the return
2367 value of SXHASH on that array, which is only allowed for strings
2368 and bit vectors. (bug introduced in 0.9.16)
2369 * improvement: the x86-64/darwin port now passes all tests (except
2370 for the debugger tests) but should still be considered
2371 experimental until this is fixed.
2372 * improvement: a style-warning is signaled for CASE (etc) clauses with
2373 duplicate keys. (thanks to Kevin Reid)
2374 * improvement: macos/x86 and macos/x86-64 now use mach exception
2375 handlers for dealing with illegal instructions (for trapping and
2376 error handling) and memory protection violations (for GC).
2378 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2379 * new platform: experimental support for x86-64/darwin (MacOS).
2380 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2381 and getnameinfo sockets functions are used instead of gethostbyaddr
2382 and gethostbyname, on platforms where the newer functions are available.
2383 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2385 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2386 don't print the startup banner, but behave as if --noinform was passed
2387 as a command line argument. (thanks to Kevin Reid)
2388 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2389 * optimization: code using alien values with undeclared types is much faster.
2390 * optimization: the compiler is now able to open code SEARCH in more cases.
2391 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2392 * bug fix: using standardized COMMON-LISP special variables as loop
2393 variables no longer signals bogus package lock violations. (reported
2395 * bug fix: declaring local loop variables to be of a range-limited type
2396 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2397 (reported by Andras Simon)
2398 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2399 bugs remain on x86-64.)
2400 * bug fix: the #= and ## reader macros now interact reasonably with
2401 funcallable instances.
2402 * bug fix: type-checks for function arguments were compiled using the
2403 compiler policy settings of the wrong lexical environment (in 1.0.2
2405 * bug fix: SHADOW accepts characters as string designators, as required
2406 by the spec (thanks to Eric Marsden)
2407 * bug fix: fixed GC safety issues when foreign functions are called with
2408 non-base strings as arguments
2409 * bug fix: more consistent error output for fatal-compiler-warnings, like
2411 * bug fix: functions with proper names were showing up as NIL in
2412 backtraces (reported by Edi Weitz, regression in 1.0.2)
2414 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2415 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2416 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2417 produce more efficient code on the x86 if the compiler can determine
2418 that (+ INDEX <constant>) does not require a bounds check and FOO
2419 has an element type at least 8 bits wide.
2420 * bug fix: references to undefined variables are handled the same way
2421 in toplevel forms as in the normal compiler
2422 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2424 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2425 (thanks to Jon Buller)
2426 * improvement: faster compilation times for complex functions
2427 * improvement: added readlink support to SB-POSIX (thanks to Richard
2430 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2431 * improvement: experimental support for mach exception handling on
2432 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2434 * improvement: support for GBK external format.
2435 (thanks to Chun Tian (binghe))
2436 * improvement: the debugger now displays variables that have been closed
2437 over, in code compiled with (DEBUG 2) or higher
2438 * improvement: support for executable cores on NetBSD (thanks to
2440 * new feature: added a RESTART-FRAME debugger command
2441 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2442 be used to provide an implementation for FILE-POSITION on Gray streams
2443 (thanks to Eric Marsden)
2444 * new feature: add syslog, openlog and closelog support to SB-POSIX
2445 (thanks to Richard Kreuter)
2446 * optimization: the function call overhead in code compiled with
2447 a high DEBUG optimization setting is significantly
2448 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2449 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2450 (thanks to Tony Martinez)
2451 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2452 evaluated once (reported by Kevin Reid)
2453 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2454 works again (thanks to Kilian Sprotte)
2455 * bug fix: an error is signaled for tagbodies with duplicate tags
2456 (thanks to Stephen Wilson)
2457 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2458 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2459 stack frames from alien callbacks.
2460 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2461 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2462 65k pages (thanks to David Woodhouse)
2463 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2465 changes in sbcl-1.0.1 relative to sbcl-1.0:
2466 * new platform: FreeBSD/x86-64, including support for threading.
2467 * new feature: the compiler stores cross-referencing information
2468 about function calls (who-calls), macroexpansion (who-macroexpands)
2469 and special variables (who-binds, who-sets, who-references) for code
2470 compiled with (< SPACE 3). This information is available through the
2471 sb-introspect contrib.
2472 * new feature: users may subclass SEQUENCE, and have instances of
2473 these classes interoperate with standard Common Lisp functions if
2474 a number of methods are defined. (This feature is experimental
2475 and the interface subject to change based on feedback from SBCL
2476 users and the general community)
2477 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2478 x86/x86-64, rather than the previous fixed depth of 8
2479 * improvement: another pthread back-end of mutex "pthread-futex".
2480 * bug fix: non-ascii command-line arguments are processed correctly
2481 (thanks to Yaroslav Kavenchuk)
2482 * bug fix: non-required arguments were not passed correctly when a method
2483 defined using DEFMETHOD was called from a mop-generated method using
2484 CALL-NEXT-METHOD (reported by Pascal Costanza)
2485 * bug fix: recursion is now permitted in accessors through
2486 SLOT-UNBOUND. (reported by Pascal Costanza)
2487 * bug fix: an error was signaled at startup if the HOME environment
2488 variable was defined, but had an empty value (reported by Peter Van Eynde)
2489 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2490 signal a PROGRAM-ERROR, not a BUG.
2491 * bug fix: SB-POSIX:READDIR works when built with large file support.
2492 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2494 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2495 for better automatic indentation support. (thanks to Matt Pillsbury)
2496 * optimization: loading generic functions no longer takes O(n^2) time,
2497 proportional to the amount of methods in the generic function
2498 (reported by Todd Sabin and Jeremy Brown)
2499 * optimization: the FIND and POSITION family of sequence functions
2500 are significantly faster on arrays whose element types have been
2502 * improvements to the Windows port:
2503 ** Intermittent heap corruption problems have been fixed. (thanks
2504 to Alastair Bridgewater)
2505 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2507 ** Lisp is able to unwind foreign exception frames from alien
2508 callbacks. (thanks to Alastair Bridgewater)
2510 changes in sbcl-1.0 relative to sbcl-0.9.18:
2511 * improvement: experimental support for threading on FreeBSD/x86.
2512 (thanks to NIIMI Satoshi)
2513 * improvement: runtime option --dynamic-space-size can be used
2514 to set the size of the dynamic space reserved on startup.
2515 * improvement: floating point modes in effect are now saved in
2516 core, and restored on startup.
2517 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2518 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2519 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2520 threads are not running after *SAVE-HOOKS* have run.
2521 * improvement: writes to CLOS instance slots are type-checked in code
2522 compiled with (SAFETY 3)
2523 * improvement: floating-point exception handling on FreeBSD (thanks to
2525 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2526 (thanks to Zach Beane)
2527 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2529 * improvement: added support for the Shift-JIS external format.
2530 (contributed by NIIMI Satoshi)
2531 * improvement: callbacks are supported on Linux/PPC. (thanks to
2533 * bug fix: compiler bug triggered by a (non-standard) VALUES
2534 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2535 * bug fix: file compiler no longer confuses validated and already
2536 dumped structurres. (reported by Kaersten Poeck)
2537 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2538 fill-pointer signals a type-error as required. (thanks to
2540 * bug fix: disassemly of funcallable instances works.
2541 * bug fix: single stepping on PPC.
2542 * bug fix: fix thread-safety problems in the type system (generally
2543 manifesting as nonsensical errors like "STRING is a bad type specifier
2544 for sequences" or "The value 1 is not of type FIXNUM")
2545 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2546 (reported by Josip Gracin)
2547 * bug fix: an error is signaled for attempts to displace arrays with
2548 incompatible element types (thanks to Mario Mommer)
2549 * bug fix: more correct handling of wide characters in debug info
2550 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2551 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2552 and don't cause extra consing
2553 * optimization: MAP and MAP-INTO are significantly faster on vectors
2554 whose elements types have been declared.
2555 * Improvements to SB-SPROF:
2556 ** Support for allocation profiling
2557 ** Reduced profiling overhead, especially for long profiling runs
2558 * Improvements to the Windows port:
2559 ** floating point exceptions are now reported correctly.
2560 ** stack exhaustion detection works partially.
2561 ** more accurate GET-INTERNAL-REAL-TIME.
2562 ** better RUN-PROGRAM behaviour in case of errors in the child
2564 ** PROBE-FILE now simplifies pathnames correctly.
2565 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2566 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2567 1st 1970 (although time timezone data will be unreliable).
2568 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2570 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2571 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2572 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2574 * bug fix: two potential GC deadlocks affecting threaded builds.
2575 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2576 returns T (reported by Anton Kazennikov)
2577 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2578 with non-variable places
2579 * bug fix: remove a race condition in the setting of
2580 funcallable-instance functions, this should make threaded CLOS
2581 code more stable against memory faults.
2582 * bug fix: corruption of specials when unbinding is interrupted by an
2583 asynchronous unwind (reported by Hannu Koivisto)
2584 * improvement: the debugger will now also display local variables that
2585 are only used once, for code compiled with a DEBUG optimization quality
2588 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2589 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2590 * incompatible change: External-format support for FFI calls. The
2591 SB-ALIEN:C-STRING no longer implies an ASCII
2592 external-format. Instead the string is subject to external-format
2593 conversion. Additionally return values of type SB-ALIEN:C-STRING
2594 are by default of type (SIMPLE-ARRAY CHARACTER), not
2595 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2596 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2597 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2598 * incompatible change: SB-EXT package no longer contains the
2599 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2600 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2602 * incompatible change: the single-stepper is no longer available
2603 on Alpha, Mips and Sparc platforms.
2604 * minor incompatible change: the direct superclasses of
2605 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2606 not (STANDARD-OBJECT FUNCTION). This makes the
2607 class-precedence-lists of GENERIC-FUNCTION and
2608 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2610 * minor incompatible change: the default stream external format on
2611 non-unicode SBCL is no longer detected from the locale, but is always
2613 * new feature: Add a version of evaluator that uses an interpreter instead
2614 of the compiler. EVAL still uses the compiler by default, to switch it
2615 to use the interpreter, set the value of the variable
2616 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2617 * minor incompatible change: the single-stepper REPL has been merged
2618 with the normal debugger (see the "Stepping" heading of the debugger help
2619 for more details). The debugger command STEP will no longer switch
2620 to the single-stepper REPL.
2621 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2622 for a type now works.
2623 * bug fix: loading of default sysinit file works. (thanks to Leonid
2625 * bug fix: better detection of circularities in the file-compiler.
2626 (reported by Marco Monteiro)
2627 * bug fix: the CL pathname functions now work with files that have
2628 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2629 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2630 systems with Unix98 pty semantics.
2631 * bug fix: ASDF-INSTALL will now work with bsd tar.
2632 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2634 * bug fix: timers expiring in dead threads no longer cause a
2635 type-error (reported by Paul "Nonny Mouse").
2636 * bug fix: thanks to more lightweight single-stepper instrumentation,
2637 code compiled with (DEBUG 3) will compile and execute significantly faster,
2638 and will have more accurate type-inferencing than before
2639 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2640 whose bindings are modified
2641 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2642 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2643 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2644 CL:SOFTWARE-VERSION with proper version
2646 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2647 * feature: implemented the READER-METHOD-CLASS and
2648 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2649 as specified by AMOP.
2650 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2652 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2653 (thanks to Lutz Euler)
2654 * optimization: hashing of general arrays and vectors has been
2655 improved. (reported by Any Fingerhut)
2656 * enhancement: SB-INTROSPECT is now able to find definitions of
2657 profiled functions. (thanks to Troels Henriksen)
2658 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2659 as well, allowing compiler-macros for SETF-functions to expand.
2660 * enhancement: step-instrumentation no longer wraps known
2661 single-value functions with multiple-value context, allowing
2662 better type inference.
2663 * fixed bug #337: use of MAKE-METHOD in method combination now works
2664 even in the presence of user-defined method classes. (reported by
2665 Bruno Haible and Pascal Costanza)
2666 * fixed bug #339(c): if there are applicable methods not part of any
2667 long-form method-combination group, call INVALID-METHOD-ERROR.
2668 (reported by Bruno Haible)
2669 * fixed bug #361: the :FUNCTION initarg in the protocol for
2670 initialization of methods can now be used to override
2671 internally-produced optimized functions. (reported by Bruno
2673 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2674 system-provided lambda expression no longer cause warnings about
2675 unbound #:|pv-table| symbols.
2676 * bug fix: improved the handling of type declarations and the
2677 detection of violations for keyword arguments with non-constant
2679 * bug fix: potentially erronous calls to PATHNAME and
2680 MERGE-PATHNAMES were being flushed in some cases.
2681 (reported by Richard Kreuter)
2682 * bug fix: compiled calls to TYPEP were mishandling obsolete
2683 instances. (reported by James Bielman and Attila Lendvai)
2684 * bug fix: format strings with ~> without matching ~< no longer
2685 trigger an AVER, but signal an understandable error instead.
2686 (reported by Antonio Martinez)
2687 * bug fix: specifying an output-file without a pathname-type for
2688 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2689 of input-file instead of "fasl". (reported by Robert Dodier)
2690 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2691 (reported by James Y Knight).
2692 * bug fix: compiler-macros-function did not consider the environment
2693 argument for shadowing by local functions.
2694 * bug fix: compiler-macros expansion was inhibited by local INLINE
2696 * bug fix: inline expansions of known functions were subject to
2697 step-instrumentation in high debug policies, leading to problems
2698 with type-inference.
2699 * bug fix: compiler failed to differentiate between different CONS
2700 types in some cases.
2701 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2702 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2703 * bug fix: #368: incorrect use of expressed vs. upgraded array
2705 * bug fix: #306a: more precise unions of array types.
2706 * thread-safety improvements:
2707 ** CONDITION-WAIT could return early on Linux, if the thread was
2708 interrupted and subsequently continued with SIGCONT.
2709 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2711 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2712 * added support for the ucs-2 external format. (contributed by Ivan
2714 * minor incompatible change: pretty printing of objects of type
2715 (cons symbol) is, in the default pprint-dispatch-table, now
2716 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2718 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2719 called later in a class's lifetime, possibly as late as when the
2720 first instance of the class is created. Previously,
2721 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2722 class became finalizeable.
2723 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2724 for multibyte external-format streams. (thanks to "vbzoli")
2725 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2726 with :ALLOCATION :CLASS inherited from superclasses of the
2728 * fixed bug: anonymous classes can now be created using the :NAME
2729 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2730 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2731 * fixed bug: core-files saved with :EXECUTABLE T can again be
2732 executed when SBCL_HOME isn't set. (reported by James Knight)
2733 * fixed bug: toplevel LOCALLY forms with declarations could
2734 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2735 * fixed bug: printing from several different threads using different
2736 values of *print-case* could cause invalid output, due to
2737 some internal special variables of the printer not being bound
2738 thread-locally (reported by Max Mikhanosha)
2739 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2740 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2741 (reported by Pascal Costanza)
2742 * fixed bug: FINALIZE-INHERITANCE is called from
2743 REINITIALIZE-INSTANCE on classes when the class has previously
2744 been finalized, as required by AMOP.
2745 * minor code generation optimizations:
2746 ** better register allocation in CLOS dispatching functions
2747 ** overflow detection when coercing signed bytes to fixnums on x86-64
2748 ** is now implemented with one IMUL instruction instead of three shifts
2749 ** more efficient bit-vector access on x86 and x86-64
2750 ** more efficient access to raw structure slots on x86 and x86-64
2751 * fixed some bugs revealed by Paul Dietz' test suite:
2752 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2753 return its argument.
2755 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2756 * feature: thread support on Solaris/x86, and experimental thread support
2758 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2760 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2761 default method for SLOT-UNBOUND.
2762 * minor incompatible change: prevent the user from specializing the
2763 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2764 somewhat counter to the intent of the protocol, I (CSR) think, and
2765 additionally it just doesn't work in SBCL as currently
2766 implemented, thanks to optimizations (that are always valid for
2767 the other three SLOT-VALUEish functions, but not for the setter).
2768 * minor incompatible change: the :SB-LDB feature is now enabled by
2769 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2770 the low-level debugger.
2771 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2772 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2773 down to an SB-SYS:FD-STREAM, allowing direct communication in
2774 more cases. Temporary files and pipes are still used as a fallback
2776 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2777 on the non-reentrant C functions localtime(3) and gmtime(3).
2778 * bug fix: global optimization policy was not visible in LOCALLY and
2780 * bug fix: class objects can be used as specializers in methods.
2781 (reported by Pascal Costanza)
2782 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2783 with a type error. (reported by blitz_ on #lisp)
2784 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2785 failed with a type error. (reported by Pascal Bourguignon)
2786 * bug fix: merging pathnames against defaults with :DIRECTORY
2787 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2788 (reported by James Y Knight)
2789 * bug fix: saving large (>2GB) cores on x86-64 now works
2790 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2791 constant index and a (simple-array (signed-byte 32)) array
2792 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2793 error (patch by Robert J. Macomber)
2794 * feature: TIME now displays the amount of run-time spent in GC
2795 * bug fix: The debugger now does a better job of respecting
2796 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2797 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2798 workaround for bug 403.)
2799 * bug fix: floating point exception handling now works on FreeBSD
2800 (thanks to NIIMI Satoshi)
2801 * fixed some bugs revealed by Paul Dietz' test suite:
2802 ** MISC.641: LET-conversion were not supposed to work in late
2804 * improvements to the Win32/x86 port:
2805 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2806 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2808 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2809 * new feature: source path information is generated for macro-expansion
2810 errors for use in IDE's like Slime (thanks to Helmut Eller)
2811 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2812 * bug fix: compiler does not loop forever on an invalid type in
2814 * improvement: compilation of most CLOS applications is significantly
2816 * optimization: added a limited bytecode compiler for simple toplevel
2817 forms, speeding up compilation and FASL loading
2818 * bug fix: the statistical profiler now properly distinguishes anonymous
2821 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2822 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2823 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2824 into subclasses of the finalized class. Now user calls to
2825 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2826 system return before any subclasses are finalized.
2827 * minor incompatible change: The reader no longer ignores errors
2828 regarding non-existent packages in #+ and #- feature tests.
2829 * new feature: command line options --no-sysinit, --no-userinit to
2830 inhibit loading the corresponding init files
2831 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2832 for sending data through UDP sockets (thanks to François-René Rideau)
2833 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2834 error is signalled instead (thanks to François-René Rideau)
2835 * minor incompatible change: Error signalling behaviour of lexical
2836 operations violating package locks has changed slightly. Refer to
2837 documentation on package locks for details.
2838 * enhancement: EVAL can process IF-expressions without resorting to the
2840 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2841 constant-folded properly due to missing out-of-line functions.
2842 (reported by Mika Pihlajamäki)
2843 * bug fix: LISTEN sometimes returned T even in cases where no data was
2844 immediately available from the stream
2845 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2846 were reversed. (reported by Levente Mészáros)
2847 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2848 when given a vector displaced to an adjustable array. (reported
2850 * bug fix: derivation of float boundaries from numbers outside the
2851 appropriate float range (reported by John Wiseman)
2852 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2854 * bug fix: precomputing cache entries for generic functions with
2855 some subclasses of specializers as yet invalid does not attempt to
2856 fill a cache line with a negative offset. (reported by Levente
2858 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2859 allow condition class objects as arguments to DOCUMENTATION and
2860 (SETF DOCUMENTATION); only find and set documentation for
2861 structure names for the STRUCTURE doc-type. (suggested by Gary
2863 * improvements to the Win32/x86 port:
2864 ** (user-homedir-pathname) and default initialization file
2865 locations now know about the user's "Documents and Settings"
2866 directory (thanks to Yaroslav Kavenchuk)
2867 ** run-program is implemented (thanks to Mike Thomas)
2868 ** sockets support (thanks to Timothy Ritchey)
2869 ** better backtrace support (thanks to Alastair Bridgewater)
2870 ** sb-grovel supported
2871 ** asdf-install and sb-posix work somewhat
2872 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2873 * improvements to the Solaris/x86 port:
2874 ** works on Solaris 11/Solaris Express
2875 ** floating-point exception handling support
2876 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2877 * fixed some bugs revealed by Paul Dietz' test suite:
2878 ** REMOVE-METHOD returns its generic function argument even when
2879 the method is not one of the generic functions' methods.
2880 ** objects declared as MEMBER types can be admissible arguments to
2881 structure accessors.
2882 ** printing characters should simply be printed by the FORMAT ~:C
2884 ** compiler failure when compiling functions with hairy constant
2885 defaults for optional parameters.
2886 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2887 function, which is already optimized.
2889 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2890 * new platform: experimental support for SBCL x86/Darwin, including
2891 MacOS X 10.4.5 on Intel.
2892 * new feature: Unicode character names are now known to the system
2893 (through CHAR-NAME and NAME-CHAR).
2894 * new feature: the filesystem location of SBCL's core file is
2895 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2896 * minor incompatible change: the contrib modules SB-POSIX and
2897 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2898 this change is to make it easier to distribute
2899 location-independent binaries.
2900 * bug fix: as implied by AMOP, standardized classes no longer have
2901 slots named by external symbols of public packages. (reported by
2903 * optimization: calling functions via constant symbols -- as in
2904 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2905 via the function object as in (FUNCALL #'FOO).
2906 * optimization: on x86 and x86-64, the calling convention for the
2907 case of dealing with an unknown number of values has been altered
2908 to be friendlier to the prediction heuristics implemented,
2909 particularly with reference to CALL and RET pairing. (thanks to
2910 Alastair Bridgewater)
2911 * optimization: on x86, the code for access to thread-local symbol
2912 values and binding/unbinding of thread-local symbols is smaller.
2913 (thanks to Alastair Bridgewater)
2914 * enhancement: CONSTANTP is now able to determine constantness of
2915 more complex forms, including calls to constant-foldable standardized
2916 functions and some special forms beyond QUOTE.
2917 * fixed bug: occasional GC crashes on Solaris/x86
2918 * optimization: x86-64 supports stack allocation of results of simple
2919 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2920 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2921 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2922 (thanks to James Knight)
2923 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2924 by the standard (thanks to Stephen Compall)
2926 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2927 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2928 be used for bundling the runtime and the core file into one
2929 executable binary. This feature is not currently supported on all SBCL
2930 platforms. (thanks to James Bielman and NIIMI Satoshi)
2931 * new feature: a generational or ephemeral garbage collector is now
2932 the default on the PowerPC platform (both Linux and Darwin). The
2933 old Cheney (stop and copy) collector is a build-time option.
2934 (thanks to Cyrus Harmon, after Raymond Toy)
2935 * minor incompatible change: the method by which SBCL finds its
2936 contributed modules has changed; it no longer relies on symbolic
2937 links from an $SBCL_HOME/systems directory, but searches directly
2938 in the subdirectories of $SBCL_HOME.
2939 * enhancement: the dynamic heap size on the Linux/PPC platform is
2940 markedly larger, even using the older Cheney garbage collector.
2941 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2942 certain complicated string types. (reported by Gary King)
2943 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2944 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2945 * fixed bug: DOCUMENTATION on structures no longer signals an
2946 error if no structure type of the right name exists. (reported by
2948 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2949 applicable non-standard primary or :AROUND method on
2950 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2951 no longer cause unbound variable errors. (reported by Kevin Reid)
2952 * fixed bug: metacircle resolution in cases where methods have slots
2953 added before the slots from STANDARD-METHOD. (reported by Jean
2955 * fixed bug: the Power PC assembly code for calling into lisp
2956 sometimes computed its return address wrongly (depending on the
2957 15th bit of the address, fixed at link time). This used to
2958 manifest itself in a segmentation violation while building PCL.
2959 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2960 many others over the years)
2961 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2962 the stack pointer (treated as a signed integer) is negative.
2963 (thanks to Peter van Eynde)
2965 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2966 * new platform: experimental support for the Windows operating
2967 system has been added. (thanks to Alastair Bridgewater)
2968 * fixed several bugs in and robustified the PPC FFI (including
2969 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2970 * bug fix: allow non-simple string symbol names (reported by Paul
2972 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2974 * bug fix: saving a core corrupted callbacks on x86/x86-64
2975 * bug fix: closed a loophole in metacircularity detection and
2976 grounding in the PCL implementation of CLOS.
2977 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2978 (reported by tomppa on #lisp)
2979 * bug fix: clear the direction flag on Lisp -> C transitions, as
2980 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2981 (reported by Andrej Grozin and Hendrik Maryns)
2982 * optimization: major improvements to GC efficiency on GENCGC platforms
2983 * optimization: faster implementation of EQUAL
2984 * optimization: emit more efficient opcodes for some common
2985 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2986 * optimization: several other minor code-generation improvements on x86-64
2987 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2989 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2990 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2991 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2992 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2993 by ANSI as a generic function, and for consistency (SETF
2994 GENERIC-FUNCTION-NAME) is treated likewise.
2995 * fixed bug #233.b: make constraint propagation notice when a variable
2996 value is changed after it is referenced but before it is used
2997 * fixed bug #296: no more arbitrary behaviour from filenames with
2998 odd characters as --load arguments. (reported by Adam Warner)
2999 * fixed bug #390: :CHARACTER-SET pathname components now work as
3000 expected. (reported by Tim Daly Jr)
3001 * fixed bug #391: complicated :TYPE intersections in slot
3002 definitions no longer cause an error in PCL internals.
3003 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3004 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3005 returning the number of octets which would be written to the
3006 file-stream. (thanks to Robert J. Macomber)
3007 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3008 arguments to the internal stream functions. (thanks to David
3010 * bug fix: stack exhaustion is now handled on the x86/SunOS
3011 platform. (thanks to Daisuke Homma)
3012 * bug fix: more accurate ROOM results on GENCGC platforms
3013 * optimization: improved type inference for arithmetic-for
3014 index variables in LOOP
3015 * optimization: faster floating-point SQRT on x86-64
3016 * fixed some bugs revealed by Paul Dietz' test suite:
3017 ** DOCUMENTATION returns NIL instead of "" for method combinations
3018 that don't have a docstring
3020 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3021 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3022 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3023 therefore are not customizeable by user code (as seems to be at
3024 least permitted and maybe required by AMOP). As a consolation,
3025 however, the SBCL implementation of these functions now calls
3026 REINITIALIZE-INSTANCE as specified by AMOP.
3027 * bug fix: slot-definition documentation is propagated as per ANSI
3028 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3029 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3030 argument, as do eslotd initialization methods. (from Pascal
3031 Costanza's "Closer" project)
3032 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3033 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3035 * bug fix: it is now possible to have more than one subclass of
3036 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3037 (reported by Bruno Haible, Pascal Costanza and others)
3038 * bug fix: the dependent update protocol now works for generic
3039 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3040 and Pascal Costanza)
3041 * bug fix: condition-class instances corresponding to
3042 DEFINE-CONDITION forms are now created eagerly. (reported by
3043 Kalle Olavi Niemitalo on comp.lang.lisp)
3044 * bug fix: floating point printing is more accurate in some
3045 circumstances. (thanks to Simon Alexander)
3046 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3047 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3048 * bug fix: callbacks on OS X now preserve stack-alignment.
3049 (thanks to Cyrus Harmon)
3050 * enhancement: the x86-64 disassembler is much better at
3051 disassembling SSE instructions. (thanks to Lutz Euler)
3052 * enhancement: CHECK-TYPE on a variable now allows type-inference
3053 (thanks to Vincent Arkesteijn)
3054 * optimization: improved performance of EUC-JP external format.
3055 (thanks to NIIMI Satoshi)
3056 * optimization: performance improvements to IO on file streams of
3057 :ELEMENT-TYPE CHARACTER
3058 * optimization: much faster memory allocation on x86-64
3059 * optimization: faster garbage collections (latency and throughput)
3061 * optimization: faster bignum subtraction and division on x86 and x86-64
3062 (thanks to Lutz Euler)
3063 * optimization: more accurate type-inference for loops that use a
3064 floating point index variable or a negative step.
3066 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3067 * bug fix: add a workaround to SBCL looping infinitely at startup on
3068 Linux kernels with apparently buggy implementations of personality().
3069 (thanks to Svein Ove Aas)
3070 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3071 (thanks to David Lichteblau)
3072 * bug fix: local bindings shadow global symbol macros for
3073 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3074 * optimization: non-open coded uses of numeric comparison operators
3075 (e.g. >) no longer cons when called with more than one parameter
3076 on platforms supporting dynamic-extent allocation.
3077 * enhancement: saving cores with foreign code loaded is now supported
3078 on MIPS/Linux in addition to the previously supported platforms.
3079 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3080 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3081 * bug fix: division by zero in sb-sprof when no samples were collected
3082 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3083 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3084 (thanks to Alexander Kjeldaas)
3085 * new feature: ignoring the return values of destructive functions
3086 like NREVERSE signals a compile-time style-warning.
3087 (thanks to Kevin Reid)
3088 * new feature: the alignment of alien structure fields can be
3089 explicitly specified. (thanks to Cyrus Harmon)
3090 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3091 and dump core on SIGQUIT
3093 ** incompatible change: threads do not inherit values of specials
3094 from their parents (see manual)
3095 ** bug fix: threads stacks belonging to dead threads are freed by the
3096 next exiting thread, no need to gc to collect thread stacks anymore
3097 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3098 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3099 ** bug fix: dynamic variable and thread start related gc lossage
3100 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3102 * fixed some bugs revealed by Paul Dietz' test suite:
3103 ** SUBTYPEP is slightly more accurate on heinously complicated
3104 CONS types where some of the members have uncertain (in the
3105 NIL, NIL sense) type relationships to each other.
3107 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3108 no longer purified unless :PURIFY T is explicitly specified.
3109 ** Non-purified cores are significantly smaller than before
3111 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3112 * new feature: timers based on Zach Beane's excellent timer package
3113 * added support for the following external formats: koi8-u,
3114 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3115 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3116 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3117 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3118 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3119 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3120 * incompatible change: a threaded SBCL will no longer revert to
3121 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3122 * bug fix: interrupts are disabled until startup is complete; no
3123 more sigsegvs when receiving a signal to soon
3124 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3126 * bug fix: add a workaround for the memory randomization features in
3127 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3128 workaround will only be in effect on systems with the proc filesystem
3130 * bug fix: printing objects of type HASH-TABLE signals a
3131 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3133 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3134 have been running for over 50 days. (reported by Gilbert Baumann)
3135 * bug fix: the logic for getting names of functions gets less
3136 confused when confronded with alternate-metaclass
3137 funcallable-instances. (reported by Cyrus Harmon)
3138 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3139 consistent, even on internal alternate-metaclass objects.
3140 * bug fix: flush closure information collected by physical
3141 environment analysis prepass before the main pass. (bug reported
3143 * bug fix: compiler pack phase does not modify a hashtable, which is
3144 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3145 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3146 may be expanded. (reported by Alexander <malishev> on c.l.l)
3147 * bug fix: no more style-warnings when compiling code using LAST
3148 under high-SPEED low-SPACE settings. (reported by David Wallin
3150 * fixed some incompatibilities between SBCL's MOP and the MOP
3152 ** the METAOBJECT class is now implemented;
3153 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3154 STANDARD-OBJECT, as required;
3155 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3156 now compatible (as required by VALIDATE-SUPERCLASS); there
3157 remains a consistency requirement over the presence or absence
3158 of the FUNCTION class in the superclass list of finalized
3159 classes; see the manual for more details;
3160 ** the :AROUND method for COMPUTE-SLOTS on
3161 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3162 requested slot ordering.
3164 ** bug fix: parent thread now can be gc'ed even with a live
3166 ** bug fix: binding a special with PROGV to no value is not
3167 the same as that symbol not having been bound (thanks to
3169 ** bug fix: binding specials is thread safe (thanks to
3171 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3172 and SB-SPROF do not die with 'no handler for signal XX in
3173 interrupt_handle_now(..)' anymore
3174 ** bug fix: WITH-TIMEOUT works with multiple running threads
3175 * fixed some bugs revealed by Paul Dietz' test suite:
3176 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3177 the :method-class keyword argument.
3179 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3180 * new port: the Solaris operating system on x86 processors is now
3181 mostly supported, though some rough edges in the environment
3182 remain. (thanks to Daisuke Homma)
3183 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3184 space for its heap. (thanks to Thiemo Seufer)
3185 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3186 closures. (thanks to Thiemo Seufer)
3187 * minor incompatible change: eof selects abort in the debugger.
3188 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3189 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3191 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3192 deprecated, and will go away in a future revision of SBCL.
3193 * minor incompatible change: GC-ON and GC-OFF are no longer
3194 implemented with a counter, it does not matter how many times gc
3195 is switched on or off
3196 * bug fix: discriminating functions for generic function classes
3197 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3198 make invalid assumptions about method precedence order. (reported
3200 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3201 platforms. (thanks to Thiemo Seufer)
3202 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3203 * bug fix: correct pathname printing with printer escaping is on.
3204 (thanks to Kevin Reid)
3205 * bug fix: complex VOP definitions in "user-space" no longer trigger
3206 package locks. (reported by Zach Beane)
3207 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3208 for funcallable-instance functions, and is no different from
3210 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3211 characters in the current readtable. (reported by Nicholas Neuss)
3212 * bug fix: SUBTYPEP on various CONS types returns more a more
3213 accurate acknowledgment of its certainty.
3214 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3215 lists in some cases. This partially fixes bug 384.
3216 * flush all standard streams before prompting in the REPL and the
3218 * bug fix: signal handling and triggering gc do not conflict
3219 directly anymore, in particular a high frequency sb-sprof does
3220 not prevent gc from running
3221 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3222 approximation for timezone and DST information between the
3223 universal time epoch and the smallest negative 32-bit time_t.
3224 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3225 year 1899 so long as the encoded time is non-negative.
3226 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3227 the correct answer for non-constant rotate amounts when performing
3228 an inline 32-bit rotation.
3230 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3231 there is only one thread in the session
3232 ** bug fix: memory leak for streams created in one thread and
3233 written to in another
3234 ** bug fix: lockup when compiled with gcc4
3235 ** bug fix: race that allows the gc to be triggered when gc is
3237 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3238 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3240 ** bug fix: finished threads are gc'ed properly
3241 * fixed some bugs revealed by Paul Dietz' test suite:
3242 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3243 has arguments with a different set of applicable methods from
3244 the orignal arguments.
3245 ** The type error thrown by MAP now has a correct expected-type
3247 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3248 name a compiled function.
3249 ** Three MISC tests where a large bignum was improperly coerced to
3250 a float that couldn't represent that bignum during type
3251 derivation were fixed.
3252 ** SUBTYPEP can now handle types involving the negation of a
3253 list-form FUNCTION type.
3254 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3255 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3256 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3258 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3259 * New feature: Experimental support for bivalent streams: streams
3260 opened with :element-type :default now allow character and binary
3261 (unsigned-byte 8) I/O
3262 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3263 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3265 * bug fix: no more highly sporadic "couldn't check whether ~S is
3266 readable" when reading a stream and an interrupt hits in the middle
3267 of a select system call
3268 * compiler better recognizes complex arrays (reported by Eduardo
3270 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3271 for variables on SBCL built with linkage-tables. (reported by Luis
3273 * various error reporting improvements.
3274 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3275 (Thanks to Thiemo Seufer)
3276 * bug fix: nested reader invokations work correctly
3277 * bug fix: it is possible to have simultaneous references to foreign
3278 code and foreign data with the same name.
3280 ** added x86-64 support
3281 ** incompatible change: the threading api now works with thread
3282 objects instead of thread ids
3283 ** bug fix: threads are protected from signals and interruption when
3284 starting up or going down
3285 ** bug fix: a race where an exiting thread could lose its stack to gc
3286 ** bug fix: don't halt on infinite error in threads if possible
3287 ** fixed numerous gc deadlocks introduced in the pthread merge
3288 ** bug fix: fixed thread safety issues in read and print
3289 ** bug fix: debugger doesn't hang on session lock if interrupted at
3290 an inappropriate moment
3291 ** bug fix: run-program is now thread safe(r)
3292 ** bug fix: inner with-recursive-lock no longer releases the mutex
3293 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3294 * fixed some bugs revealed by Paul Dietz' test suite:
3295 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3296 EXPECTED-TYPE slots filled.
3297 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3299 ** MAKE-CONDITION accepts classes as type-designators.
3300 ** COMPILE may never return NIL.
3301 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3302 range before calling Unix time functions
3304 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3305 * numerous signal handling fixes to increase stability
3306 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3307 * minor incompatible change: we now correctly canonize default
3308 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3309 as per the MOP, rather than the historical (INITARG INITFUNCTION
3310 INITFORM). (reported by Bruno Haible)
3311 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3312 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3313 for more information.
3314 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3315 pathname is a directory pathname.
3316 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3317 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3319 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3320 :METACLASS argument in addition to a class name. (reported by
3321 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3322 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3323 (reported by Bruno Haible; patch from Gerd Moellmann)
3324 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3326 * bug fix: more cleanups to the floating point exception handling on
3327 x86-64 (thanks to James Knight)
3328 * bug fix: the compiler does not try to constant fold calls of
3329 COERCE and BIT-* functions when they return freshly constructed
3330 objects. (reported by Nikodemus Siivola and Paul Dietz)
3331 * optimization: improved the MIPS versions of generic (in the
3332 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3333 * optimization: direct conversion of (unsigned-byte 32) to floats on
3334 the PowerPC platform.
3335 * optimization: structure instances with raw slots now use less
3336 memory, and probably show better memory locality. (thanks to
3338 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3339 are treated as requests for stack allocation on the x86-64,
3340 Alpha-32, PPC and SPARC platforms.
3341 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3342 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3343 (thanks to Tony Martinez)
3345 ** gcing a dead thread can no longer lead to lockups
3346 ** threads block signals until they are set up properly
3347 ** errno is no longer shared by threads
3348 ** interrupt-thread restores the eflags register on x86
3349 ** fixed some lockups due to gc/thread interaction
3350 * fixed some bugs revealed by Paul Dietz' test suite:
3351 ** invalid dotted lists no longer raise a read error when
3352 *READ-SUPPRESS* is T
3353 ** signal an error if a symbol that names a declaration is used
3354 as the name of a type, or vice versa
3355 ** allow using the (declare (typespec var*)) abbreviation for
3356 (declare (type typespec var*)) with all type specifiers
3357 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3358 ** always return NIL from PPRINT-POP when OBJECT is NIL
3359 ** don't signal errors when pretty-printing malformed LABELS,
3360 FLET or MACROLET forms
3361 ** declarations in a DOLIST body are also in scope for the
3363 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3365 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3368 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3369 * fixed cross-compiler leakages that prevented building a 32-bit
3370 target with a 64-bit host compiler.
3371 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3372 opened with :IF-EXISTS :OVERWRITE.
3373 * fixed bug 281: error for an invalid qualifier in a short-form method
3374 combination method is not signalled until the faulty method is called.
3375 * bug fix: iteration variable type inferrer failed to deal with open
3376 intervals. (reported by Alan Shields)
3377 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3378 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3379 or more runtime options were provided to the sbcl binary.
3380 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3381 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3382 * optimization: there's now a fast-path for fixnum arguments in the
3383 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3384 * optimization: the code generated on x86-64 is more compact thanks
3385 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3386 * bug fix: floating-point exception handling now partly works on
3387 x86-64. (Thanks to James Knight)
3388 * improvement to the MIPS backend from Thiemo Seufer: C-style
3389 64-bit long long arguments and return values to alien functions
3391 * fixed some bugs revealed by Paul Dietz' test suite:
3392 ** the type-error signalled from WARN has a filled-in DATUM slot.
3393 ** the type-error required when a stream is not associated with
3394 a file has the stream as its datum.
3395 ** type-errors on single-floats on x86-64 no longer have
3396 :INVALID-OBJECT as the datum
3397 ** the type-errors signalled for invalid function names now have
3398 a correct expected type
3399 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3400 for structures defined with a :TYPE. Documentation strings for
3401 typed structures are no longer immediately discarded
3402 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3403 broadcast streams and synonym streams. FILE-LENGTH now also works
3404 on broadcast streams.
3406 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3407 * incompatible change: the --noprogrammer option, deprecated since
3408 version 0.7.5, has been removed. Please use the equivalent
3409 --disable-debugger option instead.
3410 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3412 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3413 inoperational for a while now) has been completely removed.
3414 * null lexical environments are now printed as #<NULL-LEXENV>,
3415 significantly reducing the amount of clutter in typical backtraces.
3416 * documentation on weak pointers, finalization, and after GC hooks
3417 has been added to the manual.
3418 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3419 as other specialized array types, is much faster. SUBSEQ and
3420 COPY-SEQ on such arrays have also been sped up.
3421 * optimization: EQL is now more efficient when at least other argument
3422 is known to be of type (OR FIXNUM (NOT NUMBER)).
3423 * fixed bug: the runtime is now less vulnerable to changes in the
3424 size of the SBCL object on OS X, and virtual memory is reserved for
3425 all spaces that need to be at a fixed address.
3426 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3427 * fixed bug: finalizers and after GC hooks that cause consing are now
3429 * fixed bug: compiler error messages and summaries are now printed to
3430 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3431 * fixed inference of the upper bound of an iteration variable.
3432 (reported by Rajat Datta).
3433 * fixed bug 211e: calling local functions with duplicated constant
3434 keyword argument no longer causes a bogus style warning about an
3436 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3437 ftype declaration to be disregarded. (reported by Dave Roberts)
3438 * fixed bug 373: caused by erronous compilation of references to alien
3439 variables in the runtime on ppc/darwin.
3440 * fixed bug 376: CONJUGATE type deriver.
3441 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3442 (reported by Baughn on #lisp)
3443 * a cross-compiler bug on non-x86 platforms has been identified and
3444 fixed. (thanks to Bruno Haible)
3445 * improvements to the MIPS runtime code for increased stability.
3446 (thanks to Thiemo Seufer)
3447 * increased the maximimum compact environment size to allow
3448 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3449 * partial workaround for bug 135: don't name the function we're
3450 calling for hairy cases of EVAL, so as not to accumulate one environment
3451 entry per call to EVAL. (reported by Kevin Reid)
3452 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3453 * optimization: type testing for non-vector arrays should be faster.
3454 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3456 * bug fix: setting 31st element of a bit vector to zero did not work
3458 * bug fix: redefining a class definition which failed due to a
3459 previous accessor / function clash now works (but see BUGS entry
3460 #380 for more problems in this area). (thanks to Zach Beane)
3461 * the long form of DEFINE-METHOD-COMBINATION disables method group
3462 checking when given a single method group with pattern *. (thanks
3464 * on x86 compiler supports stack allocation of results of simple
3465 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3466 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3467 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3468 * fixed some bugs related to Unicode integration:
3469 ** the restarts for recovering from input and output encoding
3470 errors only appear when there is in fact such an error to
3472 * fixed some bugs revealed by Paul Dietz' test suite:
3473 ** MISC.549 and similar: late transformation of unsafe type
3474 assertions into derived types caused unexpected code
3476 ** SCALE-FLOAT type deriver is less wrong.
3477 ** type derivers for EXP, LOG and similar functions compute result
3478 types for complex arguments better.
3479 ** (MISC.563) CONJUGATE type deriver works for very restricted
3481 ** out-of-line type testers for character strings are available.
3482 ** EQUAL compiler transform understands specialness of objects
3484 ** accessing double-floats stored on the stack now works on x86-64.
3485 ** debugger internals could sometimes create invalid lispobjs,
3486 resulting in GC crashes.
3487 ** MISC.548: type check weakening can convert required type into
3489 ** initialization forms for bindings are not in scope of free special
3492 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3493 * incompatible change: thread support for non-NPTL systems has
3494 been removed - locking is buggy and unreliable. A threaded
3495 SBCL build will now warn at startup and refuse to create
3496 new threads, unless futex support is detected in the kernel
3497 * incompatible change: the top level REPL now has only an ABORT
3498 restart associated with it, not TOPLEVEL and ABORT as it used to.
3499 TOP and TOPLEVEL are now available as debugger commands for
3500 returning to the top level.
3501 * incompatible change: forms evaluated in the REPL now use the
3502 global optimization policy.
3503 * incompatible change: user- and system-initialization files are
3504 no longer processed with LOAD, but by READ and EVAL; hence the
3505 global optimization policy, startup package, readtable, etc,
3507 * The .fasl file format number has been incremented because of
3508 various incompatible changes.
3509 * internal entry point details and argument counts no longer appear
3510 in backtraces unless explicitly requested by setting
3511 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3512 * built-in and standard functions no longer have names like "top
3513 level local call to FOO".
3514 * fixed bug 32: functions defined in non-null lexical environments
3515 now have more legible printed representation
3516 * fixed bug 33: functions defined in non-null lexical environemnts
3517 are now more amenable to inspection by INSPECT.
3518 * workaround for bug 354: XEPs no longer appear in backtraces unless
3519 explicitly requested.
3520 * fixed bug: receiving the signal which results from attempting to
3521 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3522 SIGBUS on other *BSDs) on architectures where the C stack is also
3523 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3524 to debugger confusion or wild instability. (reported by Cheuksan
3526 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3527 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3528 (reported by Lutz Euler)
3529 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3530 compiled code. (reported by Paul Dietz)
3531 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3532 specialized parameter to a method to something that is not TYPEP
3533 the specializer is now possible.
3534 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3535 face of package deletion.
3536 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3537 pathname. (reported by David Tolpin on c.l.l)
3538 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3539 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3540 STRING-STREAM and FILE-STREAM, respectively.
3541 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3542 than previously; in addition, its test suite is now run on build.
3543 (thanks to Luke Gorrie)
3544 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3545 * optimization: added a immediate representation for single-floats
3547 * fixed some bugs revealed by Paul Dietz' test suite:
3548 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3549 ** attempting to create a package with a colliding nickname causes
3550 correctable errors to be signalled.
3551 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3552 ** several x86-64 backend bugs related to sign-extension of immediate
3555 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3556 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3557 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3559 * fixed loading of multiply forward-referenced layouts.
3560 (thanks to Cheuksan Wang)
3561 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3562 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3563 (see COMPILE-FILE documentation for details of :PRINT option)
3564 * fixed bugs 19 and 317: fixed-format floating point printing is
3565 more accurate. This also fixes a bug reported by Adam Warner
3566 related to the ~@F format directive.
3567 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3569 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3570 dispatch table if the from-char is a dispatch macro character.
3571 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3572 by the wordsize no longer ignore the last word. (reported by Lutz
3574 * fixed bug in type checking of dynamic-extent variables. (reported
3576 * optimization: sequence traversal functions use their freedom to
3577 coerce function designators to functions.
3578 * optimization: code with many calls to CLOS methods specialized on
3579 CLOS classes has had redundant type checks removed.
3580 * optimization: added declarations to speed up operations that access
3581 the internal character database (for example STRING-UPCASE)
3582 * optimization: comparison operations between floats and sufficiently small
3583 fixnums no longer create extra rationals
3584 * fixed some bugs related to Unicode integration:
3585 ** portions of multibyte characters at the end of buffers for
3586 character-based file input are correctly transferred to the
3587 start of the buffer at the next read.
3588 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3589 passing it through to OPEN.
3590 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3591 argument given to internal calls to OPEN.
3592 ** the built-in comment readers (introduced by character sequences
3593 ";" and "#|") are more forgiving to encoding errors; they will
3594 STYLE-WARN and then attempt to resync the stream at a character
3595 boundary. (thanks to Teemu Kalvas)
3596 * fixed some bugs in the x86-64 port:
3597 ** Negative short int return values from c-calls are sign-extended
3599 ** The stack is aligned to 16-bytes for c-calls, as required by
3600 the ABI. (thanks to Cheuksan Wang)
3601 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3602 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3603 for enums. (thanks to Vincent Arkesteijn)
3604 ** Multiple small optimizations and bugfixes for floating point
3606 * fixed some bugs revealed by Paul Dietz' test suite:
3607 ** Space, Tab, Linefeed, Return and Page have the invalid
3608 secondary constituent character trait.
3609 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3611 ** WITH-INPUT-FROM-STRING should only update the index place on
3613 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3614 works more reliably.
3615 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3616 with one-dimensional arrays with fill pointers.
3617 ** TYPE-OF failed on a complex with an integer realpart and a
3619 ** compiler failure during type inference for the code of form
3620 (IF (EQL X (THE ...)) ...) (MISC.535).
3622 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3623 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3624 platform. The port supports 61-bit fixnums, large memory spaces
3625 and reloading shared object files.
3626 * enhancement: saving cores with foreign code loaded is now
3627 supported on ppc/Darwin in addition to the previously supported
3629 * enhancement: the statistical profiler now walks deeper into the
3630 call stack for more meaningful call-graphs and accrued time
3631 reports (x86/x86-64 only). It also now reports time spent in
3633 * enhancement: it is now possible to trace most individual methods
3634 of a generic function in addition to tracing the generic function
3636 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3638 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3639 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3640 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3641 produces an error. (thanks to Vincent Arkesteijn)
3642 * bug fix: NAMESTRING on pathnames with :WILD components in their
3643 directories works correctly. (thanks to Artem V. Andreev)
3644 * fixed bug 125: compiler preserves identity of closures. (reported
3646 * bug fixed: functions with &REST arguments sometimes failed with
3647 "Undefined function" when compiled with (DEBUG 3). (reported by
3649 * bug fix: overflow during compiling of setting element of a bit
3650 vector with constant index and value. (reported by Timmy Douglas)
3651 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3652 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3653 * on x86 compiler partially supports stack allocation of dynamic-extent
3655 * GO and RETURN-FROM do not check the extent of their exit points
3656 when compiled with SAFETY 0.
3657 * fixed some bugs related to Unicode integration:
3658 ** encoding and decoding errors are now much more robustly
3659 handled; it should now be possible to recover even from invalid
3660 input or output to the terminal. (thanks to Teemu Kalvas)
3661 ** provided a first cut at implementing STRING-TO-OCTETS and
3662 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3663 ** altered the SB-MD5 contributed module slightly, changing the
3664 interface just enough for it to be supportable for builds where
3665 lisp characters are not eight bits.
3666 * fixed some bugs revealed by Paul Dietz' test suite:
3667 ** the FORMATTER-generated functions for ~V[ conditionals require
3668 the correct number of arguments.
3669 ** READ-FROM-STRING returns the mandated second value when applied
3670 to displaced strings.
3671 ** the #\Rubout and #\Backspace characters are treated as invalid
3672 constituent characters by the tokenizer.
3674 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3675 * new feature: reloading changed shared object files with
3676 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3677 * new feature: references to foreign variables and functions
3678 can now be compiled and loaded before the corresponding shared
3679 object file is loaded, as long as the foreign definitions are
3680 available at runtime.
3681 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3682 supported. (thanks to Dan Debertin)
3683 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3684 just keywords. (thanks to Vincent Arkesteijn)
3685 * fixed bug #331: structure-class instances corresponding to
3686 DEFSTRUCT forms are now created eagerly.
3687 * fixed bug #345: backtraces from calls to undefined functions work
3688 on x86 as well. Related bug #61 is now also partially fixed on x86
3689 (backtraces from throws to unknown catch tags.)
3690 * bug fix: lambda-list parsing is now stricter vrt. order and number
3691 of lambda-list keywords.
3692 * bug fix: as specified by AMOP, an error is signalled if a
3693 class-option appears multiple times in a DEFCLASS form. (reported
3695 * bug fix: RANDOM can be compiled when the compiler derives the type
3696 of its numeric argument as a disjoint set of small integers.
3697 (reported by Paul Dietz)
3698 * bug fix: starting a core saved with shared objects loaded when
3699 those objects are not available no longer causes threaded SBCL to
3700 hang. (reported by Sean Ross)
3701 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3703 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3704 argument, which must always be NIL. (reported by Kalle Niemitalo)
3705 * bug fix: printing 1.0d+23 no longer results in an error.
3706 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3707 * bug fix: structure slot setters preserve evaluation order. (thanks
3709 * fixed some bugs related to Unicode integration:
3710 ** RUN-PROGRAM can allow its child to take input from a Lisp
3711 stream. (reported by Stefan Scholl)
3712 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3713 locales. (reported by Ken Causey)
3714 * fixed some bugs revealed by Paul Dietz' test suite:
3715 ** INCF, DECF and REMF evaluate their place form as specified in
3717 ** FORMATTER expands ~{ ~} iteration directives with V or #
3718 parameters correctly.
3719 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3720 consequent uses no arguments correctly.
3721 ** the system has a partial understanding of the (COMPLEX RATIO)
3723 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3726 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3727 * new feature: a build-time option (controlled by the :SB-UNICODE
3728 keyword feature, enabled by default) for building the system with
3729 support for the entire 21-bit character space defined by the
3731 * new feature: the system now has rudimentary external-format
3732 support; the primary user-visible change at this time is that
3733 characters with the high bit set (such as lower-case-e-acute) will
3734 print correctly to a terminal in a UTF-8 environment.
3735 * minor incompatible change: BASE-CHAR no longer names a class;
3736 however, CHARACTER continues to do so, as required by ANSI.
3737 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3738 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3739 has been moved to the SB-EXT package (temporarily re-exported from
3741 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3742 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3744 * fixed bug #351: better error-handlind and reporting for malformed
3746 * fixed bug #350: bignum-printing is now more memory-efficient,
3747 allowing printing of very large bignums, eg. (expt 2 10000000).
3748 (reported by Bruno Haible)
3749 * fixed bug #302: better primitive-type selection for intersection
3751 * fixed bug #308: non-graphic characters now all have names, as
3752 required. (reported by Bruno Haible)
3753 * bug fix: redefining a class with different superclasses now correctly
3754 removes it from the direct-subclasses of its previous superclasses.
3755 (reported by David Morse)
3756 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3757 new value now works. (reported by Bruno Haible)
3758 * bug fix: correct canonicalization of multiple non-standard slot
3759 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3760 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3761 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3762 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3763 now exists, an signals an error.
3764 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3765 during macroexpansion for non-iteration variables as well. (reported
3766 by Bruno Haible for CMUCL)
3767 * bug fix: Cyclic structures and unprintable objects in compiler
3768 messages no longer cause errors. (reported by Bruno Haible)
3769 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3770 and READ-FROM-STRING all now return a primary value of NIL if
3771 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3772 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3773 (reported by Bruno Haible for CMUCL)
3774 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3775 do not designate a condition. (reported by Bruno Haible for
3777 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3778 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3779 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3780 permitting resolution in favour of any of the conflicting symbols.
3781 (reported by Bruno Haible for CMUCL)
3782 * bug fix: EQUAL compiler optimizations is less aggressive on
3783 strings which can potentially compare true despite having distinct
3784 specialized array element types.
3785 * bug fix: unit enumerations can be defined without dividing by
3786 zero. (thanks to Vincent Arkesteijn)
3787 * FORMAT compile-time argument count checking has been enhanced.
3788 (report from Bruno Haible for CMUCL)
3789 * a partial workaround for the bug 262: the compiler does not try to
3790 inline-expand a local function doing RETURN-FROM from a deleted
3791 BLOCK. (thanks to Peter Denno for the bug report and to David
3792 Wragg for the simple test case)
3793 * fixed some bugs revealed by Paul Dietz' test suite:
3794 ** RENAME-PACKAGE allows all package designators as new package
3796 ** constraint propagation and lambda variable substitution are
3797 more cautious in dealing with partially deleted code.
3798 ** compiler sometimes lost reoptimization passes.
3799 ** CERROR, given a condition as condition designator, passes its
3800 remaining arguments to the continue format control without
3802 ** Case-altering FORMAT directives work correctly on non-ASCII
3804 ** The REAL type specifier handles bounds outside the floating
3805 point ranges without signalling FLOATING-POINT-OVERFLOW.
3806 ** Functions with IR1-transformations can create intercomponent
3807 references to global functions.
3808 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3810 ** FORMAT ~R treats a nil value for its first parameter correctly.
3812 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3813 * enhancement: saving cores with foreign code loaded is now
3814 supported on x86/NetBSD and sparc/Linux in addition to the previously
3815 supported platforms.
3816 * bug fix: on some platforms repeated installations caused multiple
3817 copies of HTML documentation to be installed -- should not happen
3818 any more. (reported by Stefan Scholl)
3819 * bug fix: parsing self-recursive alien record types multiple times
3820 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3821 original patch by Helmut Eller for CMUCL)
3822 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3823 (thanks to Richard Kreuter)
3824 * bug fix: defining classes whose accessors are methods on existing
3825 generic functions in other (locked) packages no longer signals
3826 bogus package lock violations. (reported by François-René Rideau)
3827 * bug fix: special variables as DEFMETHOD parameters no longer have
3828 associated bogus type declarations. (reported by David Wragg and
3830 * bug fix: read-write consistency on streams of element-type
3831 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3832 * bug fix: redefiniton of the only method of a generic function with
3833 no DEFGENERIC no longer emits a full WARNING. In addition,
3834 redefinition of generic functions with no DEFGENERIC to an
3835 incompatible lambda list now signals an error. (thanks to Zach
3837 * bug fix: DEFGENERIC now works even when there's a function of the
3838 same name in an enclosing lexical environment. (thanks to Zach
3840 * fixed compiler failure, caused by instrumenting code during
3841 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3842 * optimization: added loop analysis and improved register allocation
3843 * fixed some bugs revealed by Paul Dietz' test suite:
3844 ** POSITION on displaced vectors with non-zero displacement
3845 returns the right answer.
3846 ** (SIMPLE-STRING) is a valid type specifier for sequence
3848 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3850 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3851 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3853 ** The justification version of the FORMAT ~< directive treats
3854 non-zero minpad parameter correctly.
3856 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3857 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3858 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3859 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3860 the supported interface.
3861 * new feature: Single-stepping of code compiled with DEBUG 2 or
3862 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3863 * new feature: saving cores with foreign code loaded is now
3864 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3865 Timothy Moore's work for CMUCL)
3866 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3867 parameters to * instead of NIL if no initform is supplied.
3868 (reported by Johan Bockgaard)
3869 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3870 correctly when FUNCALL appears as the car of the form. Note:
3871 despite this FUNCALL forms are not currently subject to
3872 compiler-macro expansion. (port of Raymond Toy's fix for the
3873 same from CMUCL, reported by Johan Bockgaard)
3874 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3875 (thanks for Teemu Kalvas)
3876 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3877 case instead of terminating the iteration (thanks for Julian
3878 Squires, Sean Champ and Raymond Toy)
3879 * bug fix: incorrect expansion of defgeneric that caused a style
3880 warning. (thanks for Zach Beane)
3881 * bug fix: slot accessor effective method computation works properly
3882 for classes with multiple non-standard applicable methods on
3883 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3884 * on x86 compiler supports stack allocation of results of LIST and
3885 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3886 CMUCL implementation by Gerd Moellmann)
3887 * fixed some bugs revealed by Paul Dietz' test suite:
3888 ** FORMAT strings with both the ~<~:;~> form of the justification
3889 directive and pretty-printing directives cause an error.
3891 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3892 * incompatible change: the internal functions
3893 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3894 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3895 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3896 instead of the old functions.
3897 * new feature: on platforms where "dladdr" is available foreign
3898 function names now appear in backtraces. (based on Helmut Eller's
3900 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3901 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3903 * documentation: ASDF manual is now distributed with SBCL.
3904 * bug fix: SBCL can now load its contributed modules with REQUIRE
3905 even if the system-provided entries have been removed from
3906 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3908 * bug fix: backtraces involving undefined functions or assembly
3909 routines are more informative. (thanks to Brian Downing)
3910 * bug fix: mutually referent alien structures now work correctly.
3911 (reported by Rick Taube)
3912 * bug fix: structures defined by WITH-ALIEN can be referred to
3913 within other definitions in the same WITH-ALIEN.
3914 * bug fix: division operators (MOD, TRUNCATE and the like) with
3915 constant zero divisors and integer dividends no longer generate
3917 * bug fix: provide default methods for INPUT-STREAM-P and
3918 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3919 * bug fix: improve the detection and resolution of MOP metacycles
3920 (where effective method computation depends on the generic function
3921 having its effective method computed). (reported by Bruno Haible)
3922 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3923 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3924 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3925 * bug fix: pathnames with relative directory components can be
3926 represented relative to default pathnames.
3927 * optimization: in taking the GCD of bignums, reduce the two bignums
3928 to approximately the same size (using Euclid's algorithm) before
3929 applying the more sophisticated binary GCD. (thanks to Juho
3931 * optimization: COUNT on bitvectors now operates word-at-a-time.
3932 * optimization: ASH with a positive, but not necessarily constant,
3933 (leftwards) shift, when in a modular context, is compiled to a
3935 * fixed some bugs revealed by Paul Dietz' test suite:
3936 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3937 if the corresponding argument is NIL.
3938 ** FORMAT directives accepting a minpad parameter treat negative
3940 ** literal commas as character parameters to FORMAT directives are
3942 ** literal spaces directly after ~<Newline> directives within a
3943 format-logical-block (~:< ~@:>) do not induce :FILL-style
3944 conditional newlines.
3945 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3946 as specified: it no longer includes conditional newlines).
3947 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3949 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3950 :PER-LINE-PREFIX argument does not evaluate to a string.
3952 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3953 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3954 the manual for details; for now, package locks can be disabled by
3955 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3956 if no major problems are found then it is likely that they will be
3957 compiled in unconditionally.
3958 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3959 unsupported operators on all platforms. To load a shared library
3960 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3961 object file, link it into a shared library outside of SBCL and
3962 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3964 * bug workaround: ROOM T and the GC were not working together
3965 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3966 reporting facility aren't preserved. That reporting has been
3967 disabled, so now until and unless someone figures out how to make it
3968 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3969 * minor incompatible change: as threatened around sbcl-0.8.0, the
3970 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3971 The symbols are also exported from SB-PCL for backwards
3972 compatibility, but more so than before SB-PCL should be treated as
3973 an implementation-internal package.
3974 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3976 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3977 It is known as of this release not to work on the Alpha, however.
3978 * fixed bug #167: errors signalled due to illegal syntax in method
3979 bodies are now more legible.
3980 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3981 designators and can hence be used with TYPEP.
3982 * fixed bug #333: CHECK-TYPE now ensures that the type error
3983 signalled, if any, has the right object to be accessed by
3984 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3985 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3986 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3988 * fixed bug #334: programmatic addition of slots using specialized
3989 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3990 and :ALLOCATION :CLASS slots.
3991 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3992 float exponents. (rereported by Peter Seibel)
3993 * fixed a bug: #\Space (and other whitespace characters) are no
3994 longer considered to be macro characters in standard syntax by
3995 GET-MACRO-CHARACTER.
3996 * fixed bug: initialization of condition class metaobjects no longer
3997 causes an instance of the condition to be created. (reported by
3999 * fixed bug: it is now possible to have slots such that
4000 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4001 description is neither :INSTANCE nor :CLASS.
4002 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4003 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4004 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4005 non-standard SLOT-DEFINITION-ALLOCATION values.
4006 * fixed bugs: various race conditions handling exiting threads.
4007 CL-PPCRE's thread torture test now passes.
4008 * fixed arguably-a-bug: GC time proportional to number of threads in
4009 system even when most of them are idle
4010 * optimization: improved performance of BIT and SBIT on bit-vectors.
4011 * .fasl file incompatibility: The fasl file version number has
4012 been incremented because of changes associated with package locks.
4014 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4015 * minor incompatible change: the system no longer provides
4016 optimization hints (conditions which are TYPEP
4017 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4018 mode; these hints are still emitted when higher SPEED optimization
4020 * new contrib module: a sampling profiler (profiling by statistical
4021 sampling, rather than by instrumenting functions) is available as
4022 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4023 * the behaviour of the standard function ED is now customizeable by
4024 third parties through a hook variable: see ED's documentation
4025 string for information on the protocol.
4026 * the compiler no longer emits efficiency notes for (FUNCALL X)
4027 when the type of X is uncertain under default optimization
4029 * fixed bug 276: mutating a binding of a specialized parameter to a
4030 method to something that is not TYPEP the specializer is now
4032 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4033 exhibit the required behaviour on the x86 platform. (thanks to
4034 Peter van Eynde, Eric Marsden and Bruno Haible)
4035 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4036 even for difficult arguments. (reported by Peter Graves)
4037 * fixed bug 141a: the backquote printer now descends quoted
4039 * fixed another bug in backquote printing: no more destructive
4040 modification of the form's list structure. (reported by Brian
4042 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4043 move between its address being taken and the call to
4044 interrupt_thread, fixing a crashing race condition.
4045 * the SB-POSIX contrib implementation has been adjusted so that it
4046 no longer exhibits ridiculously poor performance when constructing
4047 instances corresponding to C structs.
4049 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4050 * minor incompatible change: the sb-grovel contrib now treats C
4051 structures as alien (in the sense of SB-ALIEN) objects rather than
4052 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4053 has implications for memory management of client code
4054 (sb-grovel-returned objects must now be manually managed) and for
4055 type safety (alien objects now have full types).
4056 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4057 used to control emission of compiler diagnostics, rather than the
4058 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4059 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4060 quality should be considered deprecated.
4061 * install.sh now installs the user manual as well
4062 * (not quite a new documentable feature, but worth considering in
4063 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4064 beginnings of a semantically meaningful condition hierarchy is
4065 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4067 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4068 designator as the defaults argument.
4069 * fixed bug: Displaced arrays whose displaced-to array has become
4070 too small now cause ARRAY-DIMENSION to signal an error, providing
4071 for safer bounds-checking. (reported by Bruno Haible)
4072 * fixed bug: DEFCLASS slot definitions with identical :READER and
4073 :WRITER names now signal a reasonable error. (reported by Thomas
4075 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4077 * fixed bug: Invalid slot specification errors now print correctly.
4078 (thanks to Zach Beane)
4079 * fixed bug 320: Shared to local slot value transfers in class
4080 redefinitions now happen corrently from superclasses as
4081 well. (reported by Bruno Haible)
4082 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4084 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4085 improper lists correctly. (reported by Bruno Haible)
4086 * fixed bug 313: source-transform for <fun-name> was erroneously
4087 applied to a call of a value of a variable with name <fun-name>.
4088 (reported by Antonio Menezes Leitao)
4089 * fixed bug 307: The obsolete instance protocol ensures that
4090 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4091 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4092 remove dead unknown-values globs from the middle of the stack.
4093 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4094 easier to resume long computations after using *BREAK-ON-SIGNALS*
4095 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4096 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4097 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4098 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4099 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4100 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4102 * fixed a (fairly theoretical) bug in string printing: if
4103 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4104 does not have array-element-type equal to the most general string
4106 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4107 function name. (thanks to Nikodemus Siivola)
4108 * fixed bug: compile-time format string checker failed on
4109 non-closed ~{. (reported by Thomas F Burdick)
4110 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4111 don't warn on legal loop code involving more than one aggregate
4112 boolean. (thanks to Nikodemus Siivola)
4113 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4114 in keyword position to MAKE-PACKAGE was not being reported as
4116 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4117 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4119 * fixed bugs 280 and 312: the checking for multiple definitions in a
4120 file is less likely to become confused by uses of inline
4122 * fixed bug: the #S reader macro performs the keyword coercion
4123 specified for slot names. (reported by Kalle Niemitalo)
4124 * fixed bug: lambda lists may contain symbols whose names start with
4125 & but are not lambda-list-keywords; their occurrence triggers a
4127 * fixed bug 321: define-method-combination argument lambda lists do
4128 not cause invalid code to be generated when &optional or &aux
4129 variables have default values. (reported by Bruno Haible)
4130 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4131 have CLOS classes; this appears also to have fixed reported
4132 instability in stack exhaustion detection.
4133 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4134 MUFFLE-WARNING when no associated restart is present is now
4136 * optimization: rearranged the expansion of various defining macros
4137 so that each expands into only one top-level form in a
4138 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4140 * optimization: used a previously little-used slot in symbols to
4141 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4143 * fixed some bugs revealed by Paul Dietz' test suite:
4144 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4146 ** Fixed an optimization bug related to inheritance of initforms
4147 from local to shared slots.
4148 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4149 ** CAST optimizer forgot to flush argument derived type.
4150 ** print/read consistency on floats is now orders of magnitude
4151 more likely. (thanks also to Bruno Haible for a similar report
4153 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4154 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4155 for objects of type REAL. Make it so.
4156 ** SXHASH is specified (infelicitously) to respect similarity,
4157 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4158 it so. (thanks to Markus Ziegler)
4159 ** on the Alpha, the compiler succeeds in compiling functions
4160 returning a known number of arguments greater than 63.
4161 ** fixed handling of invalid NIL arguments in keyword position
4163 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4165 ** provided a readably-printable representation for RANDOM-STATE
4167 ** ensured that pathnames, where they have a namestring, always
4168 print using #P"..." syntax.
4170 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4171 * Support for the forthcoming 2.0 version of the NetBSD kernel
4172 running on x86 hardware has been added. (thanks to Perry
4173 E. Metzger most immediately, and others for their past work)
4174 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4175 current release version; SBCL's OpenBSD support had been broken
4176 since about the time of OpenBSD's switch to ELF binary format.)
4177 * [placeholder for DX summary]
4178 ** user code with &REST lists declared dynamic-extent, under high
4179 speed or space and low safety and debug optimization policy.
4180 * The manual has been converted to Texinfo format and the debugger
4181 chapter from the cmucl manual has been added.
4182 * A facility has been added to extract documentation strings from
4183 sbcl and store them as Texinfo-formatted snippets for inclusion in
4184 the manual (via Texinfo's @include directive)
4185 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4186 the test case to Dave Roberts)
4187 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4188 pointers. (reported by Sean Ross)
4189 * bug fix: PROFILE output is printed nicely even for large numerical
4190 values. (thanks to Zach Beane)
4191 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4192 greater than 32 handle EOF correctly.
4193 * bug fix: on X86 an immediate argument of the IMUL instruction is
4194 correctly printed in disassembly. (thanks to Lutz Euler)
4195 * bug fix: class slots in redefined classes preserve their old
4196 values. (thanks to Bruno Haible and Nikodemus Siivola)
4197 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4198 succeeds. (reported by Marco Baringer)
4199 * fixed some bugs revealed by Paul Dietz' test suite:
4200 ** READ-SEQUENCE now works on ECHO-STREAMs.
4201 ** RATIONALIZE works more according to its specification. (thanks
4204 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4205 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4206 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4207 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4208 should matter to you only if you rebind the printer control
4209 variables and then find you want different bindings in the
4210 debugger than in the ordinary execution of your program.)
4211 * The runtime build system has been tweaked to support building
4212 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4213 assembler and linker. (thanks to Nikodemus Siivola)
4214 * Unbound, undefined, undeclared variables now trigger full
4215 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4216 more often programmer error than deliberate exploitation of undefined
4218 * optimization: the hash algorithm for strings has changed to one
4219 that is less vulnerable to spurious collisions. (thanks to Juho
4221 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4222 needless bounds checking. (thanks to Juho Snellman)
4223 * optimization: implemented multiplication as a modular
4224 (UNSIGNED-BYTE 32) operation on the PPC backend.
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4228 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4229 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4230 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4232 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4234 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4236 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4237 their output stream on EOF from read.
4238 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4239 have been read to end-of-file.
4240 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4242 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4243 description of determination of which consecutive characters
4245 ** Printing the "Space" character with escaping on now yields "#\\ ",
4246 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4247 ** Reading floating-point numbers with *READ-BASE* set to a number
4248 less than 10 works correctly.
4249 ** Reading floating-point numbers with *READ-BASE* set to a number
4250 more than 10 works correctly.
4251 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4252 the readtable currently in effect.
4254 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4255 * minor incompatible change: parsing of namestrings on a physical
4256 (Unix) host has changed; numbers after the final #\. in a
4257 namestring are no longer interpreted as a version field. This is
4258 intented to be largely invisible to the user, except that the
4259 meaning of the namestring "*.*.*" has changed: it now refers to a
4260 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4261 should usually be replaced by
4262 (make-pathname :name :wild :type :wild :version :wild)
4263 with the added benefit that this is more likely to be portable.
4264 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4265 option to OPEN now signals an error if the file being opened
4266 exists; this may have an impact on existing code.
4267 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4268 signals received, on the PowerPC platforms (both Linux and
4269 Darwin). (thanks to Pierre Mai for pointing out the location of
4271 * several fixes on OS X: The system now builds and runs cleanly on
4272 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4273 (thanks to Brian Mastenbrook)
4274 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4275 second-resolution: integer multiples of 1/3600 between -24 and 24.
4276 (thanks to Vincent Arkesteijn)
4277 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4278 type when called with 1 argument; PEEK-CHAR checked type of
4279 PEEK-TYPE only after having read first character from a
4280 stream. (reported by Peter Graves)
4281 * bug fix: the garbage collector now has much better locality
4282 behaviour, and in particular no longer treats all memory as being
4283 exhausted when many small objects point to each other in a deeply
4285 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4286 recognized as being TYPEP their class.
4287 * bug fix: the PUSHNEW documentation string has been corrected.
4288 (thanks to Vincent Arkesteijn)
4289 * bug fix: defaulting of the value for the last of an atypically
4290 large number of multiple values being bound was not being
4291 performed correctly on the Alpha or PPC platforms
4292 * optimization: implemented multiplication as a modular
4293 (UNSIGNED-BYTE 32) operation on the x86 backend.
4294 * optimization: SEARCH on simple-base-strings can now be open-coded.
4295 (see also contrib/compiler-extras.lisp for inspiration for
4296 teaching the compiler about the Boyer-Moore algorithm).
4297 * value, returned by MAX (and MIN) called with several EQUALP, but
4298 not EQL, arguments now does not depend on compiler settings.
4299 * fixed some bugs revealed by Paul Dietz' test suite:
4300 ** in stack analysis liveness information is propagated from
4301 non-local entry points.
4302 ** pathwise CAST removing failed when the CAST node did not start
4304 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4305 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4307 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4308 host is already defined.
4309 ** RENAME-FILE works on streams instead of signalling an internal
4311 ** PEEK-CHAR uses the current readtable when determining whether
4312 or not a character is whitespace.
4313 ** MERGE-PATHNAMES handles the case when the pathname does not
4314 specify a name while the default-pathname specifies a version.
4315 ** Pathnames now stand a better chance of respecting print/read
4317 ** Attempting to use standardized file system operators with a
4318 pathname with invalid :DIRECTORY components signals a
4320 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4322 ** DIRECTORY on logical pathnames is more correct.
4323 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4324 signal a TYPE-ERROR if their argument is not a stream.
4325 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4326 designator argument does not designate a stream.
4327 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4328 examining the synonym.
4329 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4331 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4332 element-type larger than ([UN]SIGNED-BYTE 32).
4334 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4335 * When built with the :SB-FUTEX feature, threaded builds now take
4336 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4337 for faster/more reliable mutex and condition variable support.
4338 * Incompatible change (but one you probably shouldn't have been using
4339 anyway): the interface and code for arbitrating between multiple
4340 threads in the same user session has been redesigned.
4341 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4342 error when called without an explicit environment argument.
4343 (thanks to Nikodemus Siivola)
4344 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4345 confused about their position. (thanks to Adam Warner and Gerd
4347 * bug fix: Pretty printing backquoted forms with unquotations in the
4348 argument list position of various code constructs such as LAMBDA
4349 now works correctly. (reported by Paul Dietz)
4350 * bug fix: Pretty printing unquotations no longer loses all
4351 stream position information.
4352 * optimization: performance of string output streams is now less
4353 poor for multiple small sequence writes.
4354 * optimization: performance of CSUBTYPEP in the presence of complex
4355 expressions involving CONS and NOT many times has been improved.
4356 (reported by Paul Dietz)
4357 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4359 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4360 streams for the REPL, for the debugger, and so on. (thanks to
4362 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4363 * fixed some bugs revealed by Paul Dietz' test suite:
4364 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4365 is ignored if it is too small, rather than propagating through
4366 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4367 ** extremely complex negations of CONS types were not being
4368 sufficiently canonicalized, leading to inconsistencies in
4370 ** VALUES tranformer lost derived type.
4372 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4373 * fixed a bootstrapping bug: the build process no longer assumes
4374 that the various BOOLE-related constants have the same value in
4375 host and target lisps. (noted by Paul Dietz' test suite on an
4376 SBCL binary built from CLISP)
4377 * The system can now be dynamically linked on the MIPS platform,
4378 which enables dynamic loading of foreign code from Lisp. (thanks
4379 to Ralf Baechle for discussions on the MIPS ABI)
4380 * The system now records debugging information for its own source
4381 files in a filesystem-position-independent manner, relative to
4382 the "SYS" logical host.
4383 * fixed a compiler bug: MV-LET convertion did not check references
4384 to the "max args" entry point. (reported by Brian Downing)
4385 * tweaked disassembly notes to be less confident about proclaiming
4386 some instruction as an LRA. (thanks to Brian Downing)
4387 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4388 now each have their own history, command character, and other
4389 characteristics. (thanks to David Lichteblau)
4390 * fixed some bugs revealed by Paul Dietz' test suite:
4391 ** compiler failure in compiling LOGAND expressions including a
4393 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4394 shift greater than 32.
4395 ** FLUSH-DEST did not mark blocks for type check regeneration.
4396 ** HANDLER-CASE failed to accept declarations in handler clauses
4397 in some circumstances.
4399 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4400 * New code in contrib/sb-introspect (still probably not entirely
4401 stable yet) provides some support for smart Lisp development
4402 environments like SLIME.
4403 * The conditions signalled for errors occurring when loading .fasl
4404 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4405 in a way which should help ASDF recover gracefully.
4406 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4407 stuff has been cleaned up. If you code contrib/ stuff, this might
4408 affect you, and you can look at contrib/README, contrib/STANDARDS,
4409 and/or the 0.8.4.27 diff to check.
4410 * In full calls the compiler now does not generate checks for declared
4411 argument types for all arguments.
4412 * various threading fixes
4413 ** and some experimental patches which didn't make it into
4414 the main tree for this release, but which are shipped in
4415 contrib/experimental-thread.patch as a possible fix for some
4416 failures (deadlock, spinning...) in GC-intensive multithreaded
4418 * fixed PPC build problem (source code incompatibility of different
4419 library versions): added offsetof() hackery which attempts to divine
4420 where glibc maintainers put uc_mcontext today
4421 * fixed bug 282: compiler does not trust type assertions while passing
4422 arguments to a full call.
4423 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4424 &OPTIONAL VALUES type parameter.
4425 * fix bug 214: algorithm for noting rejected templates is now more
4426 similar to that of template seletion. (also reported by rydis on
4428 * fixed bug 141b: printing backquoted information readably and prettily
4429 inserts a space where necessary.
4430 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4431 (CHARACTER 10) are now reported as errors, rather than propagated
4432 as unknown types. (reported by piso on #lisp)
4433 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4434 with values NIL and :ERROR. (thanks to Milan Zamazal)
4435 * fixed bug 191c: CLOS now does proper keyword argument checking as
4436 described in CLHS 7.6.5 and 7.6.5.1.
4437 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4438 longer raise an error; further, using a list as a for-as-arithmetic
4439 counter now raises a meaningful error.
4440 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4441 now understood by sequence creation functions such as MAKE-SEQUENCE
4443 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4444 a STRING-INPUT-STREAM.
4445 * compiler enhancement: SIGNUM is now better able to derive the type
4447 * type declarations inside WITH-SLOTS are checked. (reported by
4449 * fixed some bugs revealed by Paul Dietz' test suite:
4450 ** incorrect optimization of TRUNCATE for a positive first
4451 argument and negative second.
4452 ** compiler failure in let-convertion during flushing dead code.
4453 ** compiler failure while deriving type of TRUNCATE on an
4454 interval, containing 0.
4455 ** ASH of a negative bignum by a negative bignum count now returns
4457 ** intersection of CONS types now canonicalizes properly, fixing
4458 inconsistencies in SUBTYPEP.
4460 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4461 * incompatible change: The --disable-debugger command line
4462 option now clobbers the debugger at a more fundamental
4463 level, by redefining #'INVOKE-DEBUGGER instead of by
4464 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4465 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4466 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4467 enter the debugger REPL and then suffer recursive errors
4468 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4469 while under the new system, BREAK in --disable-debugger mode
4470 terminates the system just as an unhandled error would.
4471 * fixed compiler performance when processing loops with a step >1;
4472 * bug fix: DOCUMENTATION now retrieves generic function
4473 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4474 support has been systematized, and now supports the methods
4475 specified by ANSI, along with a default method and a method for
4476 slot documentation. (reported by Nathan Froyd)
4477 * bug fix: effective methods associated with a generic function are
4478 no longer cached over a change of that generic function's method
4479 combination. (reported by Andreas Fuchs)
4480 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4481 names a non-existent directory. (thanks to Andreas Fuchs)
4482 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4483 the PPC platform, lead to stack corruption; this has been fixed.
4484 (reported by Rainer Joswig)
4485 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4486 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4487 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4488 arithmetic in general, is now much more reliable on the PPC
4490 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4491 platform now returns the right answer.
4492 * optimization: restored some effective method precomputation in
4493 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4494 precomputation is now tunable.
4495 * optimization: compiler-internal data structure use has been
4496 reviewed, and changes have been made that should improve the
4497 performance of the compiler by about 20%.
4498 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4499 simple-base-strings and simple-bit-vectors is improved.
4500 * optimization: the optimization of 32-bit logical and arithmetic
4501 functions introduced in version 0.8.3 on the x86 has been
4502 implemented on the mips, ppc and sparc platforms; an
4503 implementation of the same facility, but for 64-bit arithmetic,
4504 has been added for the alpha.
4505 * microoptimization: the compiler is better able to make use of the
4506 x86 LEA instruction for multiplication by constants.
4507 * bug fix: in some situations compiler did not report usage of
4508 generic arithmetic in (SPEED 3) policy.
4509 * bug 145b fix: compiler used wrong type specifier while converting
4510 MEMBER-types to numeric.
4511 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4513 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4514 index argument now works properly on the Alpha platform.
4515 * bug fix: floating point exception treatment on the Alpha platform
4517 * bug fix: FILE-POSITION works much better on string input and
4518 output streams. (thanks to Nikodemus Siivola)
4519 * bug fix: many threading/garbage collection symptoms sorted.
4520 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4521 might be pseudo-atomic.
4522 * internal change: Stopping for GC is now done with signals not
4523 ptrace. GC is now done in whichever thread wanted it, instead of
4525 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4527 * bug fix: result form in DO is not contained in the implicit
4529 * incompatible change: ICR structure is changed; the value part of
4530 CONTINUATION is now called LVAR; corresponding functions are
4531 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4532 * added type deriver for ISQRT (thanks to Robert E. Brown).
4533 * bug fix: better support for loading from the command line when an
4534 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4536 * fixed some bugs revealed by Paul Dietz' test suite:
4537 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4538 ** ROUND and FROUND now give the right answer when given very
4539 small float arguments.
4540 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4542 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4543 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4544 ** LCM should return a non-negative integer.
4545 ** PARSE-INTEGER returned the index of a terminator instead of the
4546 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4547 ** PARSE-INTEGER returned an incorrect index being applied to a
4549 ** LCM with two arguments of 0 returns 0 rather than signalling
4551 ** unsigned addition of a 32-bit constant with the high bit set no
4552 longer causes an internal compiler error on the x86.
4553 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4554 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4555 with negative last argument.
4556 ** byte specifiers with zero size and position no longer cause
4557 an error during type derivation.
4558 ** bignum multiplication on the Alpha platform now returns the
4560 * porting: The system now builds on SuSE AMD64, although it still
4561 generates a 32-bit binary.
4562 * .fasl file incompatibility: The fasl file version number has
4563 been incremented (because of the changes to internal compiler
4564 data structures referred to above).
4566 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4567 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4568 more accurately, on the Darwin kernel running on PowerPC hardware.
4569 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4570 * Compiler code deletion notes now signal a condition of type
4571 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4572 an associated MUFFLE-WARNING restart.
4573 * The compiler now performs limited argument count validation of
4574 constant format strings in FORMAT, and where appropriate in ERROR,
4575 CERROR and WARN. (thanks to Gerd Moellmann)
4576 * New ASDF-INSTALL contrib can be used for automatic download and
4577 installation of third-party Lisp code from CCLAN or other sites
4579 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4580 which forces another thread to execute a function supplied by the
4582 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4583 now accept and act upon their :ELEMENT-TYPE keyword argument.
4584 (reported by Martin Atzmueller, Edi Weitz)
4585 * bug fix: FILE-POSITION now accepts position designators up to
4586 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4587 is the greater. (thanks to Patrik Nordebo)
4588 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4589 Kalle Olavi Niemitalo)
4590 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4591 printable. (reported by Eric Marsden)
4592 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4593 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4594 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4595 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4596 (thanks to Stig Sandoe)
4597 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4598 UNREAD-CHAR now correctly includes the unread character in the
4599 target sequence. (thanks to Gerd Moellmann)
4600 * bug fix in threaded builds: the system can now be suspended and
4601 resumed by shell job control with minimal disruption.
4602 * bug fixes in times and timezones >2038AD
4603 * better handling of "where is GNU make?" problem in build scripts
4604 (thanks to Nikodemus Siivola)
4605 * new optimization: inside a named function any reference to a
4606 function with the same name is considered to be a self-reference;
4607 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4608 optimization quality.
4609 * new optimization on x86: logical functions and + now have
4610 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4611 used when the result is truncated to 32 bits.
4612 * VALUES declaration is partially enabled.
4613 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4614 * fixed some bugs revealed by Paul Dietz' test suite:
4615 ** The system now obeys the constraint imposed by
4616 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4617 types form a lattice under type intersection.
4618 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4619 ** ASSOC now ignores NIL elements in an alist.
4620 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4621 and (1+ MOST-POSITIVE-FIXNUM) answers.
4622 ** The addition of a method with invalid qualifiers to a generic
4623 function does not cause an error to be signalled immediately;
4624 a warning is signalled, and the error is generated only on
4625 calling the generic function.
4626 * changed .fasl file version number, in part to add type codes for
4627 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4628 obscure ANSI requirements
4630 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4631 * fixed bug 148: failure to inline-expand a local function left
4632 garbage, confusing the compiler.
4633 * fixed bugs 3cd: structure slot readers perform type check if the
4634 slot can have an invalid value (i.e. it is either not initialized
4635 or can be written with a less specific slot writer).
4636 * bug fix: the compiler now traps array references to elements off
4637 the end of an array; previously, the bounds checking in some
4638 circumstances could go off-by-one.
4639 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4641 * type declarations for array element types now obey the description
4642 on the CLHS page "Declaration TYPE", as per discussions on
4643 sbcl-help around 2003-05-08. This means that a declaration
4644 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4645 declaration, all references to BAR will be asserted or assumed
4646 (with THE, so dependent on compiler policy) to involve objects of
4647 type FOO. Note that no such declaration is implied in
4648 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4649 * declared types of functions from the "Conditions"
4650 chapter. (reported by Paul Dietz)
4651 * bug fix: CERROR accepts a function as its first argument.
4652 * bug fix: NTH an NTHCDR accept a bignum as index
4653 arguments. (reported by Adam Warner)
4654 * optimization: character compare routines now optimize comparing
4655 against a constant character. (reported by Gilbert Baumann)
4656 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4657 argument now works properly on the MIPS platform.
4658 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4659 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4660 declared to have a functional type, does not cause an error
4662 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4663 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4664 * fixed bug: if last continuation of a deleted block has a
4665 destination, this destination should be deleted too. (reported by
4667 * fixed a bug in the bootstrap process: the host compiler's values
4668 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4669 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4670 test case from Patrik Nordebo)
4671 * improved the ability of the disassembler on the PPC platform to
4672 provide helpful disassembly notes.
4673 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4674 the class in more cases than previously.
4675 * bug fix: FILE-POSITION now understands :START and :END for
4676 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4677 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4678 8) data. (thanks to David Lichteblau)
4679 * bug fix: it is possible to add a method to a generic function
4680 without lambda list.
4681 * bug fix: reader failed to signal END-OF-FILE inside an
4682 object representation. (reported by Nikodemus Siivola)
4683 * fixed some bugs revealed by Paul Dietz' test suite:
4684 ** LAST and [N]BUTLAST should accept a bignum.
4685 ** condition slot accessors are methods.
4686 ** (VECTOR NIL) is a subtype of STRING.
4688 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4689 * minor incompatible change: some nonsensical specialized lambda
4690 lists (used in DEFMETHOD) which were previously ignored now signal
4692 * minor incompatible change: the system is now aware of the types of
4693 variables in the COMMON-LISP package, and will signal errors for
4694 most violations of these type constraints (where previously they
4695 were silently accepted).
4696 * minor incompatible change: COMPILE-FILE now uses the freedom
4697 afforded (ANSI 3.2.2.3) to use derived function types for
4698 functions defined in the same file. This also permits the system
4699 to warn on static type mismatches and function
4700 redefinition. (Currently it does not work with high DEBUG level.)
4701 * minor incompatible change: VALUES declaration is disabled.
4702 * When issuing notes, the compiler now signals a condition of type
4703 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4704 restart for use in user handlers. It is expected that the
4705 COMPILER-NOTE condition will eventually become a condition
4706 supertype to a hierarchy of note types, which will then be
4707 handleable in a similar fashion. However, at the moment, no such
4708 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4709 but it's an implementation detail, not a classification for the
4711 * Changes in type checking closed the following bugs:
4712 ** type checking of unused values (192b, 194d, 203);
4713 ** template selection based on unsafe type assertions (192c, 236);
4714 ** type checking in branches (194bc).
4715 * A short form of VALUES type specifier has ANSI meaning (it has
4716 increased the number of situations when SBCL cannot perform type
4718 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4719 keywords or constants is permissible.
4720 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4721 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4722 classes. (thanks to Antonio Martinez)
4723 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4724 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4725 argument to a pretty-print stream. Instead, it leaves any such
4726 operations to DESCRIBE-OBJECT methods.
4727 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4729 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4730 lambda lists. (thanks to David Lichteblau)
4731 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4732 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4733 (thanks to Gerd Moellmann)
4734 * fixed bug 246: increased compilation speed of long
4735 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4737 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4739 * DEFCONSTANT now throws a condition of type
4740 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4741 constant to a non-EQL value; CONTINUE and ABORT restarts
4742 respectively change and preserve the value.
4743 * fixed bug 63: The code walker, part of the implementation of CLOS,
4744 is now better at handling symbol macros.
4745 * bug fix: There is no longer an internal implementation type named
4746 CL:LENGTH. (reported by Raymond Toy)
4747 * bug fix: In macro-like defining macros/special operators the
4748 implicit block does not enclose the lambda list.
4749 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4750 enclosed in parentheses) are not suitable as type specifiers, and
4751 their use properly signals an error now.
4752 * bug fix: An argument count mismatch for a type specifier in code
4753 being compiled no longer causes an unhandled error at compile
4754 time, but signals a compile-time warning.
4755 * fixed simple vector readable printing
4756 * bug fix: DESCRIBE takes more care over whether the class
4757 precedence list slot of a class is bound before accessing it.
4758 (reported by Markus Krummenacker)
4759 * bug fix: FORMATTER can successfully compile pretty-printer format
4760 strings which use variants of the ~* directive inside.
4761 * bug fix: SEARCH now applies its TEST predicate to the elements of
4762 the arguments in the correct order. (thanks to Wolfhard Buss)
4763 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4764 in type inference. (thanks to Robert E. Brown)
4765 * bug fix: Reading in symbols with an explicit package name of ""
4766 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4767 * fixed some bugs revealed by Paul Dietz' test suite:
4768 ** NIL is now allowed as a structure slot name.
4769 ** Arbitrary numbers, not just REALs, are allowed in certain
4770 circumstances in LOOP for-as-arithmetic clauses.
4771 ** Multiple class redefinitions before slot access no longer
4772 causes a type error.
4773 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4774 association between the name and a class.
4775 ** Generic functions with non-standard method-combination and over
4776 five methods all of which return constants no longer return NIL
4777 after the first few invocations. (thanks to Gerd Moellmann)
4778 ** CALL-NEXT-METHOD with no arguments now passes the original
4779 values of the arguments, even in the presence of assignment.
4780 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4782 ** DISASSEMBLE works with closures and funcallable instances.
4783 ** ADD-METHOD now returns the generic function, not the new method.
4784 ** FIND-METHOD signals an error if the lengths of the specializers
4785 is incompatible with the generic function, even if the ERRORP
4787 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4788 which its argument is a member.
4789 ** DEFCLASS only redefines the class named by its class-name
4790 argument if that name is the proper name of the class;
4791 otherwise, it creates a new class.
4792 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4793 of the UNBOUND-SLOT condition to the name of the slot.
4794 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4795 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4796 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4797 SLOT-MAKUNBOUND in the specified fashion.
4799 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4800 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4801 cross-compilation host. As a consequence, we can now bootstrap our
4802 way up to SBCL starting with a bare gcc toolchain and human-readable
4803 source code (first the source to CLISP, then the source to SBCL).
4804 * A contributed module containing a partial implementation of the
4805 simple-streams interface has been included. (thanks to Rudi
4807 * A contributed module implementing the RFC1321 Message Digest
4808 Algorithm, known as MD5, has been included.
4809 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4810 no longer has any effect, as the code controlled by this feature
4811 has been deleted. (As far as we know, no-one has ever built using
4812 this feature, and its semantics were confused in any case).
4813 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4814 work on conditions (as required by the ANSI specification),
4815 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4816 expected behaviour on conditions. Users should note, however,
4817 that such behaviour is not required by the ANSI specification,
4818 and so use of this behaviour may render their code unportable.
4819 * fixed some bugs revealed by Paul Dietz' test suite:
4820 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4822 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4823 ** SXHASH on condition objects no longer returns NIL.
4824 ** :ALLOCATION :CLASS slots are better treated; their values are
4825 updated on class redefinition, and initforms inherited from
4826 superclasses are applied.
4827 ** REMOVE-METHOD returns its generic function argument even when
4828 no method was removed.
4829 ** SHARED-INITIALIZE now initializes the values of the requested
4830 slots, including those with :ALLOCATION :CLASS.
4831 ** ALLOCATE-INSTANCE now works on structure classes defined via
4832 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4834 ** SLOT-EXISTS-P now works on conditions, as well as structures
4836 ** MAKE-LOAD-FORM now has the required methods on
4837 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4838 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4839 keyword, and now implements the SLOT-NAMES argument.
4840 ** methods with &OPTIONAL arguments no longer allow too many
4841 arguments to be passed in the call without error.
4842 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4843 option is consistent with the required arguments of the generic
4844 function lambda list.
4845 * bug fix: REQUIRE accepts a string designator. (Thanks to
4847 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4848 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4849 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4850 * bug fix: The compiler now checks for duplicated variables in macro
4852 * bug fix: SETQ on globals returns the correct value.
4853 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4854 not a COMPILER-ERROR (followed by some other strange error on
4855 choosing the CONTINUE restart).
4856 * bug fix: make.sh and friends are now more consistent in the way that
4857 they look for GNU "make".
4859 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4860 * experimental native threads support (on x86 Linux >=2.4 only).
4861 This is not compiled in by default: you need to add :SB-THREAD to
4862 the target features. See the "Beyond ANSI" chapter of the manual
4864 * fix for longstanding nonANSIism: The old distinction between
4865 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4866 The return value from CL:FIND-CLASS is now a CLOS class, and
4867 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4868 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4869 * An interface to the MetaObject Protocol, as described in Kiczales,
4870 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4871 MIT Press, 1991, is available from the SB-MOP package.
4872 * incompatible change: the SB-PCL package should now be considered
4873 a private implementation detail, and no longer a semi-private MOP
4875 * minor incompatible change: due to rearrangement for threads, the
4876 control stack and binding stack are now allocated at arbitrary
4877 addresses instead of being hardcoded per-port. Users affected by
4878 this probably have to be doing advanced things with shared
4879 libraries, and will know who they are.
4880 * minor incompatible change: Previously, all --eval forms used were
4881 processed with READ before any of them were processed with EVAL.
4882 Now each --eval form is processed with both READ and EVAL before
4883 the next --eval form is processed. (Thus package operations like
4884 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4885 work as the user might reasonably expect.)
4886 * minor incompatible change: *STANDARD-INPUT* is now only an
4887 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4889 * minor incompatible change: Y-OR-N-P is now character-oriented,
4890 not line oriented. Also, YES-OR-NO-P now works without errors.
4891 (thanks to Antonio Martinez)
4892 * sb-aclrepl module improvements: an integrated inspector, added
4893 repl features, and a bug fix to :trace command.
4894 * Known functions, which cannot be open coded by the backend, are
4895 considered to be able to check types of their arguments. (fixing
4896 a bug report by Nathan J. Froyd)
4897 * fixed a bug in computing method discriminating functions: It is
4898 now possible to define methods specialized on classes which have
4899 forward-referenced superclasses. (thanks to Gerd Moellmann)
4900 * fixed evaluation order in optional entries (reported by Gilbert
4902 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4903 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4904 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4905 required-by-AMOP NAME argument, as well as CLASS and
4906 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4907 * fixed bug 20: DEFMETHOD can define methods using names that are
4908 not the proper names of classes to designate class specializers.
4909 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4910 Unix file descriptors, instead of blowing up. (thanks to Antonio
4912 * Garbage collection refactoring: user-visible change is that a
4913 call to the GC function during WITHOUT-GCING will not do garbage
4914 collection until the end of the WITHOUT-GCING. If you were doing
4915 this you were probably losing anyway.
4916 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4917 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4918 TYPEP the latter but not the former.
4919 * The compiler issues a full WARNING for calls to undefined functions
4920 with names from the CL package.
4921 * MAP-INTO for a vector destination is open coded. (reported by
4922 Brian Downing on c.l.l)
4923 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4924 documentation string.
4925 * fixed some bugs revealed by Paul Dietz' test suite:
4926 ** COPY-ALIST now signals an error if its argument is a dotted
4928 ** Condition slots are now accessed more correctly in the presence
4929 of multiple initargs for a given slot.
4930 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4931 exclude restarts of the same name associated with a different
4933 ** DEFCLASS of forward-referenced classes with another
4934 forward-referenced class in the superclasses list no longer
4936 ** Condition slots are now initialized once each, not multiple
4937 times. (thanks to Gerd Moellmann)
4938 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4940 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4941 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4942 arguments contain duplicated elements.
4943 ** RESTART-CASE understands local macros.
4944 ** RESTART-CASE associates exactly its own restarts with a condition.
4945 ** ENDP in safe mode checks its argument to be of type LIST.
4946 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4947 in question is unbound.
4948 ** Optimized MAKE-INSTANCE functions no longer cause internal
4949 assertion failures in the presence of duplicate initargs.
4950 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4951 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4952 propagated even in the ctor optimized implementation of
4954 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4956 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4957 * a better implementation of SXHASH on (simple) bit vectors,
4958 measured both in execution speed and in distribution of results
4959 over the positive fixnums, has been installed. Likewise, a better
4960 implementation of EQUAL for simple bit vectors is now available.
4961 * fixed CEILING optimization for a divisor of form 2^k.
4962 * fixed bug 240 (emitting extra style warnings "using the lexical
4963 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4964 by Antonio Martinez)
4965 * fixed SXHASH, giving different results for NIL depending on type
4966 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4967 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4968 variable. (found by Rolf Wester)
4969 * SBCL does not ignore type declarations for special
4970 variables. (reported by rif on c.l.l 2003-03-05)
4971 * some bug fixes in contrib/sb-aclrepl/
4972 * fixed some bugs revealed by Paul Dietz' test suite:
4973 ** a bug in the CONS type specifier, whereby the CAR and CDR
4974 types got intertwined, has been fixed;
4975 ** the type system is now able to reason about the interaction
4976 between INTEGER and RATIO types more completely;
4977 ** APPEND, [N]REVERSE and NRECONC check that those their
4978 arguments, which must be proper lists, are really so;
4979 ** An array specialized to be unable to hold elements has been
4980 implemented, as required -- yes, really -- by ANSI;
4981 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4982 on malformed property lists;
4984 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4985 * incompatible packaging change: in line with Unix convention,
4986 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4987 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4988 * REQUIRE and PROVIDE are now optionally capable of doing something
4989 useful. See the documentation string for REQUIRE.
4990 * infrastructure for a managed SBCL contrib system: contributed
4991 modules in this release include:
4992 ** the ASDF system definition facility;
4993 ** an interface to the BSD Sockets API;
4994 ** an ACL-like convenience interface to the repl;
4995 (thanks to Kevin Rosenberg)
4996 ** an implementation of ROTATE-BYTE, with efficient implementation
4998 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4999 gives a closer approximation to the right answer than previously.
5000 (thanks to Raymond Toy)
5001 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5002 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5003 optional environment arguments, as required by ANSI.
5004 * fixed bugs in other functions taking environment objects, allowing
5005 calls with an explicit NIL environment argument to be compiled
5007 * fixed bug 228: primary return values from
5008 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5009 COMPILE or FUNCTION.
5010 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5011 :TYPE will no longer signal errors on innocuous objects.
5012 * fixed bug 231b: SETQ is better at respecting type declarations in
5013 the lexical environment.
5014 * fixed a bug in DEFCLASS: classes named by symbols with no or
5015 unprintable packages can now be defined.
5016 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5017 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5018 * fixed compiler failure related to checking types of functions.
5019 (reported by Robert E. Brown)
5020 * the compiler is now much more consistent in its error-checking
5021 treatment of bounding index arguments to sequence functions: in
5022 (SAFETY 3) code, errors will be signalled in almost all cases if
5023 invalid sequence bounding indices are passed to functions defined
5024 by ANSI to operate on sequences.
5025 * fixed a bug in the build procedure: documentation of SBCL-specific
5026 packages is now preserved and available in the final Lisp image.
5027 * lifted FDEFINITION lookup out of loops in the implementation of
5028 many list operations. (thanks to Robert E. Brown)
5029 * fixed a bug in the reader: the #n# reader macro now works for
5030 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5031 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5032 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5033 E. Brown and Tony Martinez respectively)
5034 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5035 SLOT-BOUNDP: in particular, it is now able to optimize them much
5036 better, and is now not vulnerable to having packages renamed.
5037 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5038 always called when a slot is not present in an instance. (thanks
5040 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5041 longer signal an error on unreading a character following EOF on
5042 the previous constituent stream. (thanks to Tony Martinez)
5043 * fixed some bugs revealed by Paul Dietz' test suite:
5044 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5045 not just nonnegative fixnums;
5046 ** the logical bit-array operators such as BIT-AND now accept an
5047 explicit NIL for their "opt-arg" argument (to indicate a
5048 freshly-consed result bit-array);
5049 ** ELT now signals an error on an invalid sequence index in safe
5051 ** the type system is now cleverer about negations of numeric
5052 types, and consequently understands the BIGNUM and RATIO types
5054 ** the type system is now cleverer about the interaction between
5055 INTEGER and RATIO types: while bugs still remain, many more
5056 cases are accurately computed;
5057 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5058 if it is in the last clause;
5059 ** CONSTANTLY now correctly returns a side-effect-free function in
5061 ** DECLARE is no longer treated as a special-operator; in
5062 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5063 * incremented fasl file version number due to the change in the
5064 DEFSTRUCT-SLOT-DESCRIPTION structure.
5066 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5067 * minor incompatible change: code processed by the "interpreter" or
5068 EVAL now has a compilation optimization policy of (DEBUG 2)
5069 (changed from (DEBUG 1)) to improve debuggability of interactive
5070 development, and to allow the use of the debug RETURN command in
5072 * an experimental implementation of the RETURN command for the
5073 debugger has been included. (thanks to Frederik Kuivinen)
5074 * fixed bug 62: constraints were not propagated into a loop.
5075 * fixed bug in embedded calls of SORT (reported and investigated by
5077 * fixed some bugs revealed by Paul Dietz' test suite:
5078 ** printing and reading of arrays with some dimensions having
5079 length 0 (thanks to Gerd Moellmann);
5080 ** BOA constructor with &AUX argument without a default value does
5081 not cause a type error;
5082 ** CONSTANTP now returns true for all self-evaluating objects.
5084 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5085 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5086 accessors that are related by inheritance, as specified in the
5087 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5088 Valtteri Vuorikoski)
5089 * The compiler is now able to inline functions that were defined in
5090 a complex lexical environment (e.g. inside a MACROLET).
5091 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5093 * Support for the upcoming FreeBSD-5.0 release has been included.
5094 (thanks to Dag-Erling Smorgrav)
5095 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5096 effect when it is not in a toplevel context.
5097 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5098 stand a better chance of being correct. (thanks to Gerd
5100 * fixed bug in COERCE, which now signals an error on coercing a
5101 rational to a bounded real type which excludes the expected
5103 * The compiler is now able to derive types more accurately from the
5104 COERCE and COMPILE functions.
5105 * fixed bug 223: functional binding is considered to be constant
5106 only for symbols in the CL package.
5107 * fixed bug 231: SETQ did not check the type of a variable being set
5108 (reported by Robert E. Brown)
5109 * A new optimization for MAKE-INSTANCE has been included, fixing
5110 various bugs (including relating to :ALLOCATION :CLASS slots and
5111 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5113 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5114 ** As required by ANSI, LOOP now disallows anonymous collection
5115 clauses such as COLLECT I in conjunction with aggregate boolean
5116 clauses such as THEREIS (= I 1);
5117 ** LOOP now signals an error when any variable is reused in the
5118 same loop (including the potentially useful construct analogous
5119 to WITH A = 1 WITH A = (1+ A);
5120 ** IT is only a special loop symbol within the first clause of a
5121 conditional loop clause;
5122 ** LOOP with a typed iteration variable over a hashtable now
5123 signals a type error iff it should.
5124 * fixed some other bugs revealed by Paul Dietz' test suite:
5125 ** FILE-STREAM now names the class previously known as FD-STREAM;
5126 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5127 argument) no longer signals an error;
5128 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5129 of the slot symbol, rather than using the current package
5130 ((:CONC-NAME "") continues to intern the slot's name in the
5132 * incremented fasl file version number, because of the incompatible
5133 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5134 of the new implementation of DEFINE-COMPILER-MACRO.
5136 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5137 * Support for building SBCL for MIPS platforms running in
5138 little-endian mode has now been checked in, and basic
5139 functionality on said platforms verified.
5140 * minor incompatible change: PCL now records the pathname of a file
5141 in which methods and the like are defined, rather than its
5143 * minor incompatible change: TRUENAME now considers the truename of
5144 a file naming a directory to be the pathname with :DIRECTORY
5145 component indicating that directory.
5146 * minor incompatible change: a NAMED clause in the extended form of
5147 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5148 reason for the previous behaviour is unclear.
5149 * more systematization and improvement of CLOS and MOP conformance
5150 in PCL (thanks to Gerd Moellman and Pierre Mai):
5151 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5153 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5154 primary methods with no specializers;
5155 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5157 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5158 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5159 FORWARD-REFERENCED-CLASSes; error reporting on
5160 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5162 ** SXHASH on CLOS instances now uses a slot internal to the
5163 instance to return different numbers on distinct instances,
5164 while preserving the same return value through invocations of
5166 ** DEFMETHOD signals errors when methods with longer incongruent
5167 lambda lists are added to generic functions;
5168 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5169 CLASS, as specified in AMOP;
5170 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5171 on the order returned by the primary method for classes of
5172 class STANDARD-CLASS;
5173 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5174 * fixed some bugs shown by Paul Dietz' test suite:
5175 ** DOLIST puts its body in TAGBODY;
5176 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5178 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5179 value producing form;
5180 ** if more variables are given to PROGV than values, extra
5181 variables are bound and made to have no value;
5182 ** NSUBSTITUTE on list arguments gets the right answer with
5184 ** ELT signals an error of type TYPE-ERROR when the index argument
5185 is not a valid sequence index;
5186 ** LOOP signals (at macroexpansion time) an error of type
5187 PROGRAM-ERROR when duplicate variable names are found;
5188 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5189 ** FUNCALL of special-operators now cause an error of type
5191 ** PSETQ now works as required in the presence of side-effecting
5192 symbol-macro places;
5193 ** NCONC accepts any object as its last argument;
5194 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5196 ** loop-for-as-package does not require a package to be explicitely
5198 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5200 * fixed bug 166: compiler preserves "there is a way to go"
5201 invariant when deleting code.
5202 * fixed bug 172: macro lambda lists with required arguments after
5203 &REST arguments now cause an error to be signalled. (thanks to
5205 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5206 bug. (thanks to Matthew Danish)
5207 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5209 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5210 arguments are lexically rebound. (thanks to Gerd Moellmann and
5212 * fixed bug 194: error messages are now more informative when there
5213 is no primary method applicable in a call to a generic
5214 function. (thanks to Gerd Moellmann)
5215 * fixed bug in command line argument checking (thanks to Julian
5217 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5218 (thanks to Matthew Danish)
5219 * incremented fasl file version number, because of the
5220 SXHASH-related changes in the layout of CLOS data structures
5222 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5223 * minor incompatible change: The runtime (the Unix executable named
5224 "sbcl") is now much pickier about the .core files it will load.
5225 Essentially it now requires .core files to descend from the same
5226 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5227 as the runtime does. (The intent is to prevent the crashes which
5228 can occur, and which can even be reported as mysterious failures,
5229 when people patch the sources or change the build parameters
5230 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5231 sbcl and .core files.)
5232 * fixed bug: VALUES-LIST is no longer optimized away.
5233 * fixed bug 142: The FFI conversion of C string values to Lisp
5234 string values no longer conses excessively. (thanks to Nathan
5235 Froyd porting Raymond Toy's fix to CMU CL)
5236 * began to systematize and improve MOP conformance in PCL (thanks to
5237 Nathan Froyd, Gerd Moellman and Pierre Mai):
5238 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5240 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5241 ** FINALIZE-INHERITANCE is now called on class finalization;
5242 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5243 argument precedence order.
5244 * fixed bug 202: The compiler no longer fails on functions whose
5245 derived types contradict their declared type.
5246 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5247 so it can be non-toplevel.
5248 * The fasl file version number has changed (because of the new
5249 implementation of DEFMACRO).
5250 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5251 safe code, that any length requirement by their type-specifier
5252 argument is valid. The exceptions to this are described in bug
5254 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5255 functions now check the types of their inputs as required by ANSI.
5256 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5257 introduced symbol is DECLAREd to be SPECIAL.
5258 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5259 * fixed bug: :COUNT argument to sequence functions may be negative
5260 * fixed bug: body of DO-SYMBOLS may contain declarations
5261 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5262 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5263 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5264 symbol macro only once
5265 * fixed printing of call frame when argument list is unavailable
5266 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5267 * compiler no longer signals WARNING on unknown keyword
5270 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5271 * A beta-quality port to the mips architecture running Linux,
5272 based on the old CMUCL backend, has been made. It has been tested
5273 on a big-endian kernel, and works sufficiently well to be able to
5274 rebuild itself; it has not been tested in little-endian mode.
5275 * fixed an inconsistency between gencgc.c and purify.c which made
5276 dumping/loading .core files unreliable
5277 * fixed bug 120a: The compiler now deals correctly with IFs where
5278 the consequent is the same as the alternative, instead of
5279 misderiving the return type. (thanks to Alexey Dejneka)
5280 * fixed bug 113: Logical pathnames are now dumpable (the logical
5281 host is resolved at load-time, throwing an error if it is not
5283 * fixed bug 174: FORMAT's error message is slightly clearer when a
5284 non-printing character is used in a format directive.
5285 * fixed several bugs in compiler checking of type declarations, i.e.
5286 violations of the Python "declarations are assertions" principle
5287 (thanks to Alexey Dejneka)
5288 * fixed several bugs in PCL's error checking (thanks to Gerd
5290 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5292 * fixed bug in compilation of functions as first class values
5293 (thanks to Antonio Martinez-Shotton)
5294 * The compiler's handling TYPE-ERRORs which it can prove will
5295 inevitably happen at runtime has been cleaned up and corrected
5296 in several ways. (thanks to Alexey Dejneka)
5297 * improved argument type checking for various basic arithmetic
5298 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5299 lavished on them in the past that they can be compiled in many
5300 ways in different special cases
5301 * fixed bug 181: compiler checks validity of user supplied type
5303 * cleaned up code flushing in optimization: Function calls which
5304 should signal errors for safety purposes (e.g. which ANSI says
5305 should signal errors when their arguments are of incorrect type)
5306 are no longer optimized away.
5307 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5308 * incremented fasl file version number, because changes in the
5309 implementation of sequence functions like COERCE caused
5310 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5311 in old inline expansions) to become undefined. (Actually these
5312 changes were later undone, so we might very well be binary
5313 compatible with 0.7.7 after all, but leaving the version number
5314 incremented seemed like the simplest and most conservative
5317 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5318 * An alpha-quality port to the parisc architecture running Linux,
5319 based on the old CMUCL backend, has been made. This, even more so
5320 than the other backends, should be considered still a work in
5321 progress; known problems include that the Linux kernel in 64-bit
5322 mode does not propagate the correct sigcontext structure to
5323 userspace, and consequently SBCL on a parisc64 kernel will not
5325 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5326 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5327 suppressed.) Also now that the compiler is looking at declarations
5328 in the environment, it checks optimization declarations as well,
5329 and suppresses inlining when (> DEBUG SPEED).
5330 * More fixes have been made to treatment of floating point exception
5331 treatment and other Unix signals. In particular, floating point
5332 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5333 * The detection and handling of control stack exhaustion (infinite
5334 or very deeply nested recursion) has changed. Stack exhaustion
5335 detection is now done by write-protecting pages at the OS level
5336 and applies at all optimization settings; when found, a
5337 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5338 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5339 be caught using IGNORE-ERRORS.
5340 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5341 correctly when transforming recursive LABELS functions to LETs.
5342 (thanks to Alexey Dejneka)
5343 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5344 that are names of constants or global variables.
5345 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5346 alien routines with docstrings.
5347 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5348 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5350 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5351 (thanks to Eric Marsden)
5352 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5353 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5354 * Bug fix: The SPARC backend can now compile functions involving
5355 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5356 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5357 to a functions expecting a PATHNAME-DESIGNATOR.
5358 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5359 lambda lists. (thanks to Alexey Dejneka)
5360 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5361 functions so that EXPORTing the name of the class doesn't cause
5362 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5363 to Antonio Martinez for reporting this)
5364 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5365 constant-folded without failing an assertion. (thanks to Einar
5366 Floystad Dorum for reporting this)
5367 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5368 types are now dealt with more correctly by the compiler.
5369 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5370 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5371 behaviour analogous to RENAME-FILE. This puts its behaviour more
5372 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5374 * The fasl file version number has changed again. (because of the
5375 bug fix involving the names of PCL MAKE-INSTANCE functions)
5377 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5378 * bug fix: Floating point exceptions are treated much more
5379 consistently on the x86/Linux and PPC/Linux platforms.
5380 * Array initialization with :INITIAL-ELEMENT is now much faster for
5381 cases when the compiler cannot open code the array creation, but
5382 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5383 array accesses have also seen a speed increase.
5384 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5385 specified. (This was at the root of some bad interactions between
5386 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5388 * bug fix: Internal error arguments for undefined functions are now
5389 computed correctly on the PPC/Linux platform.
5390 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5391 Raymond Toy's patch for CMU CL)
5392 * Support for the Solaris 9 operating environment has been included
5393 (thanks to Daniel Merritt)
5394 * A very ugly but hopefully complete draft of the missing FFI chapter
5395 of the manual has been created by reformatting the corresponding
5396 CMU CL manual chapter into (currently very ugly and incoherent)
5397 DocBook and bringing it up to date for SBCL behavior. Thus, the
5398 manual is now essentially complete, at least by my extreme
5399 once-and-only-once standards, whereby it's acceptable to refer to
5400 the doc strings of SB-EXT functions as the primary documentation.
5401 * The fasl file version number has changed again, due to cleanup of
5402 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5403 is no longer a static symbol.)
5405 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5406 * SBCL now builds with OpenMCL (version 0.12) as the
5407 cross-compilation host; also, more progress has been made toward
5408 bootstrapping under CLISP.
5409 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5411 * bug 158 fixed: The compiler can now deal with integer loop
5412 increments different from 1; fixing this turned out also to fix
5414 * bug 169 fixed: no more bogus warnings about using lexical bindings
5415 despite the presence of perfectly good SPECIAL declarations (thanks
5416 to David Lichteblau)
5417 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5418 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5419 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5421 * bug 180 fixed: Method combination specifications no longer ignore
5422 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5423 * bug fix: Structure type predicate functions now check their argument
5424 count as they should.
5425 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5426 correctly. (thanks to Pierre Mai)
5427 * minor incompatible change: The --noprogrammer option is deprecated
5428 in favor of the new --disable-debugger option, which is very similar.
5429 (The major difference is that it takes effect at a slightly different
5430 time at startup, causing handling of errors in --sysinit and
5431 --userinit files will be affected differently.) The
5432 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5433 been added to allow this functionality to be controlled from ordinary
5434 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5435 maintainers, who might want to run non-interactive scripts to
5436 build SBCL cores which will later be used interactively.)
5437 * minor incompatible change: The LOAD function no longer, when given
5438 a wild pathname to load, loads all files matching that pathname.
5439 Instead, an error of type FILE-ERROR is signalled.
5441 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5442 * bug 147 fixed: The compiler preserves its block link/count
5443 invariants more correctly now so that it doesn't crash. (thanks
5445 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5447 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5448 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5449 no-value-for-this-character as NIL (as specified by ANSI).
5450 * HOST-NAMESTRING on physical pathnames now returns a string that is
5451 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5452 (thanks to Christophe Rhodes)
5453 * The Alpha port handles icache flushing more correctly. (thanks to
5455 * More progress has been made toward bootstrapping under CLISP. (thanks
5456 to Christophe Rhodes)
5457 * The fasl file format has changed again, because dynamic loading
5458 on OpenBSD (which has non-ELF object files) motivated some cleanups
5459 in the way that foreign symbols are transformed and passed around.
5460 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5461 is no longer treated as whitespace by the reader, but instead as
5462 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5463 |A
\7fB|, instead of A as it used to.
5465 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5466 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5467 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5468 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5469 this as of 0.7.1.45, but was left out of the previous news section
5470 (thanks to Dan Barlow)
5471 * SBCL now runs on the Solaris operating system on SPARC architectures
5472 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5473 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5474 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5475 * SPARC backend cleanups, allowing builds of cores optimized for V8
5476 and V9 SPARCS, and also emission of code targeted to a particular
5477 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5479 * SBCL is closer to bootstrapping under CLISP, thanks to various
5480 fixes by Christophe Rhodes.
5481 * The fasl file format has changed again, to allow the compiler's
5482 INFO database to support symbol macros.
5483 * The user manual (in doc/) is formatted into HTML more nicely.
5484 (thanks to coreythomas)
5485 * The system is smarter about SUBTYPEP relationships, especially
5486 those involving NOT types (including types such as ATOM which are
5487 represented internally using NOT types). Thus SUBTYPEP is less
5488 likely to return (VALUES NIL NIL) in general, and in particular
5489 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5491 * The fasl file format has changed again, because the internal
5492 representation of types now includes a new slot to support the new
5493 SUBTYPEP-of-NOT-types logic.
5494 * (not a change in the main branch of SBCL, but a related prototype
5495 which can hopefully be merged into the main branch of SBCL in the
5496 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5497 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5498 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5499 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5500 dispatch macro character combinations. (thanks to Alexey Dejneka)
5501 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5502 that superficially look like logical namestrings correctly.
5503 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5505 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5506 default supplied-p) for &optional and &key arguments. (thanks to
5509 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5510 * incompatible change: The compiler is now less aggressive about
5511 tail call optimization, doing it only when (> SPACE DEBUG) or
5512 (> SPEED DEBUG). (This is an incompatible change because there are
5513 programs which relied on the old CMU-CL-style behavior to optimize
5514 away their unbounded recursion which will now die of stack overflow.)
5515 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5516 for non-GENCGC systems has been increased to 20M (since that
5517 seems much closer to the likely performance optimum for modern
5518 systems than the old 4M value was)
5519 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5520 and *DEBUG-PRINT-LEVEL*
5521 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5522 of CMU CL's support for SPARC, and various endianness and other
5523 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5524 * new syntactic sugar for the Unix command line: --load foo.bar is now
5525 an alternate notation for --eval '(load "foo.bar")'.
5527 ** The system now detects stack overflow and handles it gracefully,
5528 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5529 optimization settings. (This is a good thing in general, and
5530 its introduction in this version should be particularly timely
5531 for anyone whose code fails because of suppression of tail
5533 ** The system now hunts for the C variable "environ" in a more
5534 devious way, to avoid segfaults when the C library version differs
5535 between compile time and run time. (thanks to Christophe Rhodes)
5536 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5537 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5538 ** The compiler no longer issues bogus style warnings for undefined
5539 classes in the same source file as the DEFCLASSes which defined
5540 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5542 ** fixes in CONDITION class precedence list for undefined function
5543 errors (thanks to Alexei Dejneka)
5544 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5545 correctly. (thanks to Dan Barlow)
5546 ** portability fixes aiming at bootstrapping under CLISP (thanks
5547 to Dave McDonald and Christophe Rhodes)
5548 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5549 ** fixes in type translation and and type inference (thanks to
5551 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5552 ** various fixes in the new ports (thanks to Dan Barlow)
5553 * several changes related to debugging:
5554 ** suppression of tail recursion, as noted above
5555 ** stack overflow detection, as noted above
5556 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5557 is now the default. (For some time encapsulation has been more
5558 reliable than the breakpoint-based :ENCAPSULATE NIL
5559 implementation, at least on X86 systems; and I just noticed that
5560 encapsulation also seems closer to the spirit of the ANSI
5563 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5565 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5566 up properly again. (There was a packaging bug in 0.7.0 which
5567 left their definitions in SB-SYS::LOAD-FOREIGN and
5568 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5569 vital for most things which interface to C-level interfaces,
5570 like extensions working with sockets or databases or
5571 Perl-compatible regexes or whatever, and the need to fix
5572 this bug is the main reason that 0.7.1 was released so
5574 ** DEFGENERIC is now choosier about the methods it redefines, so that
5575 reLOADing a previously-LOADed file containing DEFGENERICs does
5576 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5577 cycle now works as it should. (thanks to Alexey Dejneka)
5578 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5579 fixed by Christophe Rhodes. (He actually submitted this patch
5580 months ago, and I delayed until after 0.7.0.)
5581 ** Bug 111 (internal compiler confusion about runtime checks on
5582 FUNCTION types) was fixed by Alexey Dejneka.
5583 * Some internal cleanups (getting rid of variables which aren't
5584 needed now that the byte interpreter is gone) caused the fasl
5585 file format number to change again.
5587 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5588 * major incompatible change: The default fasl file extension, i.e. the
5589 default extension for files produced by COMPILE-FILE, has changed
5590 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5592 ** There are many changes in the implementation of the compiler.
5593 SBCL is now essentially a compiler-only implementation of ANSI
5594 Common Lisp. EVAL still "interprets" a few special cases, but
5595 almost all the interesting cases are handled by creating
5596 a LAMBDA expression, calling COMPILE on it, then calling
5597 FUNCALL on the result.
5598 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5599 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5600 Since the code is newer, there might still be some new bugs
5601 (though not as many as before Martin Atzmueller's fixes:-). But
5602 the new code is substantially simpler and clearer, and hopefully
5603 any remaining bugs will be simpler, less fundamental, and more
5604 fixable then the bugs in the old code.
5605 ** The revised compiler is still a little unsteady on its feet.
5607 *** The debugging information it produces (particularly the names
5608 of FUNCTION objects) is sometimes much less useful than what
5609 the old compiler produced.
5610 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5611 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5612 within a MACROLET) has been temporarily weakened.
5613 ** There are new compiler optimizations for various functions:
5614 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5615 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5616 *** the math functions TRUNCATE, FLOOR, and CEILING
5617 *** the function-of-all-trades COERCE
5618 Mostly these should be transparent, but there's one
5619 potentially-annoying problem (bug 117): when the compiler
5620 inline-expands a function and does type analysis on the result,
5621 it can create control paths which have type mismatches, and
5622 when it can't prove that those control paths aren't taken,
5623 it will issue WARNINGs about the type mismatches. This is
5624 a particular problem in practice for the new sequence functions.
5625 It's not clear how this should be fixed, and for now, a
5626 workaround is given in the entry for 117 in the BUGS file.
5627 ** (Because of the interaction between the two previous items --
5628 occasional inlining problems and new inline expansions -- some
5629 of the new sequence function optimizations won't really kick in
5630 completely until debugging information, and then inlining, are
5631 straightened out in some future version.)
5632 * minor incompatible changes:
5633 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5634 DIRECTORY no longer implicitly promotes NIL slots of its
5635 pathname argument to :WILD. In particular, when you ask for the
5636 contents of a directory (which you used to be able to do without
5637 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5638 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5639 ** changes in behavior that ANSI explicitly defines to be
5640 implementation dependent:
5641 *** The new compiler-only implementation still conforms with ANSI,
5642 but acts a little different than before. Besides the obvious
5643 changes in performance tradeoffs (that the cost per form passed
5644 to EVAL has gone up, and the cost per form executed by EVAL
5645 has gone down), the behavior of the system changes a little
5646 because there are no longer any interpreted function objects.
5647 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5648 e.g. doing COMPILE on the output of interactive DEFUN is
5650 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5652 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5653 has changed from (:CL) to NIL.
5654 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5655 e.g. #\Newline and #\Tab, don't have names specified in the
5656 ANSI Common Lisp standard, is now based on their ASCII symbolic
5657 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5658 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5659 are no longer used for output.
5660 ** changes in internal implementation constants:
5661 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5662 4 million. (If your application spends a lot of time GCing and
5663 you have a lot of RAM, you might want to experiment with
5664 increasing it even more.)
5665 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5666 However, almost all old code should still continue to work without
5667 immediate update, as SB-C-CALL is now a (deprecated) nickname
5669 ** Old operator names in the style DEF-FOO are now deprecated in
5670 favor of new corresponding names DEFINE-FOO, for consistency with
5671 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5672 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5673 internal symbols, but a few supported extensions like
5674 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5675 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5676 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5677 etc. as you get deeper into recursive calls to the debugger
5678 command loop, instead of the old "5]", "5]]", "5]]]"
5679 sequence. (I was motivated to do this when squabbles between
5680 ILISP and SBCL left me very deeply nested in the debugger. In the
5681 short term, this change will probably provoke more ILISP/SBCL
5682 squabbles, but hopefully it will be an improvement in the long run.)
5683 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5684 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5685 function, since declaiming return types involving aliens is
5686 (1) annoyingly messy to do by hand and (2) vital to efficient
5687 compilation of code which calls such functions.
5688 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5689 longer reexported by the SB-EXT package. They're solely useful
5690 for alien code, so it seems more logical that you should get
5691 them from the SB-ALIEN package, not in SB-EXT.
5692 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5693 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5694 features. Instead, the code that they used to control is always
5695 built into the system.
5696 * many other bug fixes
5697 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5698 advantage of the new EVAL-WHEN stuff and to clean them up in
5699 general, and they are now more ANSI-compliant in a number of
5700 ways. Martin Atzmueller is responsible for a lot of this.
5701 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5703 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5704 *** correct ERROR type for various file operations
5705 *** some fixes for Lisp streams
5706 *** DEFMETHOD syntax checking
5707 *** changing old weird representation of debug information as
5708 strings (which, among their other deficiencies, don't transform
5709 correctly when you rename packages, and don't change their
5710 print representation when you change things like *PACKAGE*
5711 and *PRINT-LENGTH*) to symbols and lists of symbols
5712 He also made several improvements and fixed several bugs in DESCRIBE.
5713 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5715 *** misbehavior of WRITE-STRING/WRITE-LINE
5716 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5717 and several other LOOP problems as well
5718 *** DIRECTORY when similar filenames are present
5719 *** DEFGENERIC with :METHOD options
5720 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5721 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5722 *** argument ordering in FIND with :TEST option
5723 *** mishandled package designator argument in APROPOS-LIST
5724 *** various problems in the backquote readmacro
5725 *** a bug in APROPOS
5726 *** probably some others that I'm not describing very well here,
5727 since the CVS log documents them by reference to sbcl-devel
5728 messages, and the SourceForge archives aren't working well.:-(
5729 ** Dan Barlow improved the Alpha port (and is making progress on the
5730 PPC port, for those of you who think different).
5731 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5732 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5733 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5734 continues to work on the SPARC port (for those of you in a position
5735 to look down upon our little PC-compatible boxes from a great height).
5736 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5737 and uses that copy, rather than the current dynamic value, when
5738 it's trying to decide whether to truncate output. Thus e.g.
5739 (let ((*print-lines* 50))
5740 (pprint-logical-block (stream nil)
5742 (let ((*print-lines* 8))
5743 (print (aref possiblybigthings i) stream)))))
5744 should now truncate the logical block only at 50 lines, instead of
5745 often truncating it at 8 lines, as it did before.
5746 * The doc/cmucl/ directory, containing old CMU CL documentation
5747 from the time of the fork, is no longer part of the base system.
5748 SourceForge has shut down its anonymous FTP service, and with it
5749 my original plan for distributing the old CMU CL documentation
5750 there. For now, if you need these files you can download an old
5751 SBCL source release and extract them from it.
5752 * The fasl file version number changed again, for dozens of reasons,
5753 some of which are apparent above.
5755 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5756 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5757 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5758 patch, so that DISASSEMBLE output is much nicer.
5759 * The code in the SB-PROFILE package now seems reasonably stable.
5760 I still haven't decided what the final interface should look like
5761 (I'd like PROFILE to interact cleanly with TRACE, since both
5762 facilities use function encapsulation) but if you have a need
5763 for profiling now, you can probably use it successfully with
5764 the current CMU-CL-style interface.
5765 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5766 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5767 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5768 link now returns the dangling link itself, and for similar
5769 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5770 link itself. (In these cases the old code signalled an error and
5771 looped endlessly, respectively.) Thus, DIRECTORY now works even
5772 in the presence of dangling and cyclic symbolic links.
5773 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5774 is now a supported extension again, since the consensus on
5775 sbcl-devel was that it can be useful for ordinary development
5776 work, not just for debugging SBCL itself.
5777 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5778 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5779 that currently-defined functions might be redefined later with
5780 different return types.
5781 * Hash tables can be printed readably, as inspired by CMU CL code
5782 of Eric Marsden and SBCL code of Martin Atzmueller.
5783 * better error handling in CLOS method combination, thanks to
5784 Martin Atzmueller porting Pierre Mai's CMU CL patches
5785 * more overflow fixes for >16Mbyte I/O buffers
5786 * A bug in READ has been fixed, so that now a single Ctrl-D
5787 character suffices to cause end-of-file on character streams.
5788 In particular, now you only need one Ctrl-D at the command
5789 line (not two) to exit SBCL.
5790 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5792 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5793 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5794 does the right thing.
5795 * The implementation of some type tests, especially for CONDITION
5796 types, is now tidier and maybe faster, due to CMU CL code
5797 originally by Douglas Crosher, ported by Martin Atzmueller.
5798 * Some math functions have been fixed, and there are new
5799 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5800 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5801 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5802 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5803 likely to be built into sbcl-0.7.0.)
5804 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5805 CL, ported to SBCL by Martin Atzmueller)
5806 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5807 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5808 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5809 * There's a new slam.sh hack to shorten the edit/compile/debug
5810 cycle for low-level changes to SBCL itself, and a new
5811 :SB-AFTER-XC-CORE target feature to control the generation of
5812 the after-xc.core file needed by slam.sh.
5813 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5814 COMPILE-FILE is no longer supported, so that now every function
5815 gets an entry point, so that block compilation looks a little
5816 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5817 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5818 returns the number of bytes consed since the system started,
5819 rather than the number consed since the first time the function
5820 was called. (The new definition parallels ANSI functions like
5821 CL:GET-INTERNAL-RUN-TIME.)
5822 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5823 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5824 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5825 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5826 * Fasl file version numbers are now independent of the target CPU,
5827 since historically most system changes which required version
5828 number changes have affected all CPUs equally. Similarly,
5829 the byte fasl file version is now equal to the ordinary
5832 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5833 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5834 is no longer recognized. I apologize for this, because it was
5835 listed in SB-EXT as a supported extension, but I found that
5836 its existing behavior was poorly specified, as well as incorrectly
5837 specified, and it looked like too much of a mess to straighten it
5838 out. I have enough on my hands trying to get ANSI stuff to work..
5839 * many patches ported from CMU CL by Martin Atzmueller, with
5840 half a dozen bug fixes in pretty-printing and the debugger, and
5841 half a dozen others elsewhere
5842 * fixed bug 13: Floating point infinities are now supported again.
5843 They might still be a little bit flaky, but thanks to bug reports
5844 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5845 as flaky as they were.
5846 * The --noprogrammer command line option is now supported. (Its
5847 behavior is slightly different in detail from what the old man
5848 page claimed it would do, but it's still appropriate under the
5849 same circumstances that the man page talks about.)
5850 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5851 are now supported, and enabled by default. Thus, the compiler can
5852 handle many floating point and complex operations much less
5853 inefficiently. (Thus e.g. you can implement a complex FFT
5855 * The compiler now detects type mismatches between DECLAIM FTYPE
5856 and DEFUN better, and implements CHECK-TYPE more correctly, and
5857 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5858 thanks to patches from Martin Atzmueller.
5859 * various fixes to make the cross-compiler more portable to
5860 ANSI-conforming-but-different cross-compilation hosts (notably
5861 Lispworks for Windows, following bug reports from Arthur Lemmens)
5862 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5863 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5864 fixed thanks to Pierre Mai's CMU CL patches.
5865 * fixes to keep the system from overflowing internal counters when
5866 it tries to use i/o buffers larger than 16M bytes
5867 * fixed bug 45a: Various internal functions required to support
5868 complex special functions have been merged from CMU CL sources.
5869 (When I was first setting up SBCL, I misunderstood a compile-time
5870 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5871 * improved support for type intersection and union, fixing bug 12
5872 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5873 more obscure bugs as well
5874 * some steps toward byte-compiling non-performance-critical
5875 parts of the system, courtesy of patches from Martin Atzmueller
5876 * Christophe Rhodes has made some debian packages of sbcl at
5877 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5878 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5879 stable, but are nonetheless usable. When he's ready, I'd be happy
5880 to add them to the SourceForge "File Releases" section. (And if
5881 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5882 * new fasl file format version number (because of changes in
5883 internal representation of (OR ..) types to accommodate the new
5884 support for (AND ..) types, among other things)
5886 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5887 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5889 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5891 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5892 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5893 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5894 * DESCRIBE now works on structure objects again.
5895 * Most function call argument type mismatches are now handled as
5896 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5897 know whether the function will be redefined before the call is
5898 executed. (The compiler could flag local calls with full WARNINGs,
5899 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5900 it doesn't keep track of enough information to know whether calls
5901 are local in this sense.)
5902 * Compiler output is now more verbose, with messages truncated
5903 later than before. (There should be some supported way for users
5904 to override the default verbosity, but I haven't decided how to
5905 provide it yet, so this behavior is still controlled by the internal
5906 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5907 src/compiler/ir1util.lisp.)
5908 * Fasl file format version numbers have increased again, because
5909 support for the Gray streams extension changes the layout of the
5910 system's STREAM objects.
5911 * The Gray subclassable streams extension now works, thanks to a
5912 patch from Martin Atzmueller.
5913 * The full LOAD-FOREIGN extension (not just the primitive
5914 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5915 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5916 but like most other programs, it defaults to copying the Unix
5917 environment from the original process instead of starting the
5918 new process in an empty environment.
5919 * Extensions which manipulate the Unix environment now support
5920 an :ENVIRONMENT keyword option which doesn't smash case or
5921 do other bad things. The CMU-CL-style :ENV option is retained
5922 for porting convenience.
5923 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5924 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5926 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5928 * A patch from Martin Atzmueller seems to have solved the SIGINT
5929 problem, and as far as we know, signal-handling now works cleanly.
5930 (If you find any new bugs, please report them!)
5931 * The system no longer defaults Lisp source file names to types
5932 ".l", ".cl", or ".lsp", but only to ".lisp".
5933 * The compiler no longer uses special default file extensions for
5934 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5935 seems to expect a single default extension for all compiled code,
5936 and there's no compelling reason to try to stretch the standard
5937 to allow two different extensions.) Instead, byte-compiled files
5938 default to the same extension as native-compiled files.
5939 * Fasl file format version numbers have increased again, because
5940 a rearrangement of internal implementation packages made some
5941 dumped symbols in old fasl files unreadable in new cores.
5942 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5943 many fewer weird special cases.
5944 * Bug #17 (differing COMPILE-FILE behavior between logical and
5945 physical pathnames) has been fixed, and some related misbehavior too,
5946 thanks to a patch from Martin Atzmueller.
5947 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5948 by Tim Moore, ported to SBCL by Martin Atzmueller.
5949 * Martin Atzmueller fixed several filesystem-related problems,
5950 including bug #36, in part by porting CMU CL patches, which were
5951 written in part by Paul Werkowski.
5952 * More compiler warnings in src/runtime/ are gone, thanks to
5953 more patches from Martin Atzmueller.
5954 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5957 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5959 * DESCRIBE now works on CONDITION objects.
5960 * The debugger now handles errors which arise when trying to print
5961 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5963 * The build system now uses an additional file, customize-target-features.lisp,
5964 to allow local modifications to the target *FEATURES* list. (The point of
5965 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5966 debugging features enabled, without having to worry about propagating it
5967 into everyone's system when I do a "cvs update".) When no
5968 customize-target-features.lisp file exists, the target *FEATURES* list
5969 should be constructed the same way as before.
5970 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5971 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5972 warn about behavior which is undefined under the ANSI spec. Note: This
5973 is specified by ANSI, but it's not very popular with programmers.
5974 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5975 macro in the SBCL sources for an example of a workaround which you
5976 might use to make portable ANSI-standard code which does what you want.
5977 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5978 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5979 when it's used as a non-toplevel form. (This is required in order
5980 to implement the DEFCONSTANT-EQX macro.)
5981 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5982 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5983 funny things, due to bugs in the implementation of EVAL-WHEN
5984 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5985 non-toplevel DEFCONSTANTs are uncommon.)
5986 * The core file version number and fasl file version number have been
5987 incremented, because the old noncompliant DEFCONSTANT behavior involved
5988 calling functions which no longer exist, and because I also took the
5989 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5990 * fixed bug 1 (error handling before read-eval-print loop starts), and
5991 redid debugger restarts and related debugger commands somewhat while
5993 ** The QUIT debugger command is gone, since it did something
5994 rather different than the SB-EXT:QUIT command, and since it never
5995 worked properly outside the main toplevel read/eval/print loop.
5996 Invoking the new TOPLEVEL restart provides the same functionality.
5997 ** The GO debugger command is also gone, since you can just invoke
5998 the CONTINUE restart directly instead.
5999 ** The TOP debugger command is also gone, since it's redundant with the
6000 FRAME 0 command, and since it interfered with abbreviations for the
6002 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6004 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6005 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6006 some porting work by Martin Atzmueller)
6007 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6008 with a boatload of patches which he ported to SBCL. Now that those
6010 ** The system tries to make sure that its low-priority messages
6011 are prefixed by semicolons, to help people who like to use
6012 syntax highlighting in their ILISP buffer. (This patch
6013 was originally due to Raymond Toy.)
6014 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6015 patches originally written by Raymond Toy.
6016 ** The compiler understands coercion between single-value and
6017 multiple-VALUES type expressions better, getting rid of some very
6018 weird behavior, thanks to patches originally by Robert MacLachlan
6019 and Douglas Crosher.
6020 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6021 lambda lists, thanks to a patch originally by Pierre Mai.
6022 ** The system no longer bogusly warns about "abbreviated type
6024 ** The compiler gets less confused by inlining and RETURN-FROM,
6025 thanks to some patches originally by Tim Moore.
6026 ** The system no longer hangs when dumping circular lists to fasl
6027 files, thanks to a patch originally from Douglas Crosher.
6028 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6029 undefined function error.
6030 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6031 in structure slot initforms) for now, documented workaround instead:-|
6032 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6033 * fixed bug 5: added stubs for various Gray stream functions called
6034 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6035 installed, at least appropriate type errors are generated
6036 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6037 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6038 consistently in DEFMETHOD forms.
6039 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6040 it doesn't seem to affect SBCL after all
6041 * The C runtime system now builds with better optimization and many
6042 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6044 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6046 * The system is now under CVS at SourceForge (instead of the
6047 CVS repository on my home machine).
6048 * The new signal handling code has been tweaked to treat register
6049 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6050 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6051 downstream, e.g. in debug-int.lisp, has implicit dependencies
6052 on the unsignedness of integer representation of machine words,
6053 and that caused the system to bomb out with infinite regress
6054 when trying to recover from type errors involving signed values,
6055 e.g. (BUTLAST '(1 2 3) -1).)
6056 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6057 (This was one of the bugs Peter Van Eynde reported back in July.)
6058 * The system now uses code inspired by Colin Walters' O(N)
6059 implementation of MAP (from the cmucl-imp@cons.org mailing
6060 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6061 inline the MAP operation, and there is more than one
6062 sequence argument to the MAP call (so that it can't just
6063 do ETYPECASE once and for all based on the type of the
6064 single sequence argument). (The old non-inline implementation
6065 of the general M-argument sequence-of-length-N case required
6066 O(M*N*N) time when any of the sequence arguments were LISTs.)
6067 * The QUIT :UNIX-CODE keyword argument has been renamed to
6068 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6069 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6071 * Raymond Wiker's patches to port dynamic loading from Linux to
6072 FreeBSD have been added.
6073 * The BUGS file is now more nearly up to date, thanks in large part
6074 to Martin Atzmueller's review of it.
6075 * The debugger now flushes standard output streams before it begins
6076 its output ("debugger invoked" and so forth).
6077 * The core version number and fasl file version number have both
6078 been incremented, because of incompatible changes in the layout
6080 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6081 used to not be called for a saved Lisp image.)
6082 * Martin Atzmueller's version of a patch to fix a compiler crash,
6083 as posted on sbcl-devel 13 September 2000, has been installed.
6084 * Instead of installing Martin Atzmueller's patch for the
6085 compiler transform for SUBSEQ, I deleted the compiler transform,
6086 and transforms for some similar consing operations.
6087 * A bug in signal handling which kept TRACE from working on OpenBSD
6089 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6090 away by constant folding
6091 * The system now defines its address space constants in one place
6092 (in the Lisp sources), and propagates them automatically elsewhere
6093 (through GENESIS and the sbcl.h file). Therefore, patching the
6094 address map is less unnecessarily tedious and error-prone. The
6095 Lisp names of address space constants have also been systematized.
6096 * CVS tags like dollar-Header-dollar have been removed from
6097 the sources, because they have never saved me trouble and
6098 they've been source of trouble working with patches and other
6099 diff-related operations.
6100 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6101 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6103 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6105 * The system has been ported to OpenBSD.
6106 * The system now compiles with a simple "sh make.sh" on the systems
6107 that it's supported on. I.e., now you no longer need to tweak
6108 text in the target-features.lisp-expr and symlinks in src/runtime/
6109 by hand, the make.sh takes care of it for you.
6110 * The system is no longer so grossly inefficient when compiling code
6111 involving vectors implemented as general (not simple) vectors (VECTOR T),
6112 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6113 which dares to use the various sequence functions on non-simple
6114 vectors, takes less of a performance hit.
6115 * There is now a primitive type predicate VECTOR-T-P
6116 to test for the (VECTOR T) type, so that e.g.
6117 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6118 can now be compiled with some semblance of efficiency. (The old code
6119 turned the type declaration into a full call to %TYPEP at runtime!)
6120 * AREF on (VECTOR T) is still not fast, since it's still compiled
6121 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6122 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6123 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6124 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6125 without making full calls to SUBTYPEP at runtime.
6126 (Some analogous efficiency issues for non-simple vectors specialized to
6127 element types other than T, or for non-simple multidimensional arrays,
6128 have not been addressed. They could almost certainly be handled the
6129 same way if anyone is motivated to do so.)
6130 * The changes in array handling break binary compatibility, so
6131 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6132 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6133 instead of (VALUES T T).
6134 * By following the instructions that Dan Barlow posted to sbcl-devel
6135 on 2 July 2000, I was able to enable primitive dynamic object
6136 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6137 functionality is not implemented (since it calls ld to resolve
6138 library references automatically, requiring RUN-PROGRAM for its
6139 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6140 try to resolve library references) is now supported.
6141 * The system now flushes the standard output streams when it terminates,
6142 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6143 them at several other probably-convenient times, e.g. in each pass of
6144 the toplevel read-eval-print loop, and after evaluating a form given
6145 as an "--eval" command-line option. (These changes were motivated by a
6146 discussion of stream flushing issues on cmucl-imp in August 2000.)
6147 * The source transform for TYPEP of array types no longer assumes
6148 that an array whose element type is a not-yet-defined type
6149 is implemented as an array of T, but instead punts, so that the
6150 type will be interpreted at runtime.
6151 * There is now some support for cross-compiling in make.sh: each of
6152 the phases of make.sh has its own script. (This should be transparent
6153 to people doing ordinary, non-cross-compile builds.)
6154 * Since my laptop doesn't have hundreds of megabytes of memory like
6155 my desktop machine, I became more motivated to do some items on
6156 my to-do list in order to reduce the size of the system a little:
6157 ** Arrange for various needed-only-at-cold-init things to be
6158 uninterned after cold init. To support this, those things have
6159 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6160 symbols with such names are now uninterned after cold init).
6161 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6162 fasl files for cold load.
6163 ** Remove the old compiler structure pooling code (which used to
6164 be conditional on the target feature :SB-ALLOC) completely.
6165 ** Redo the representation of some data in cold init to be more compact.
6166 (I also looked into supporting byte compiled code at bootstrap time,
6167 which would probably reduce the size of the system a lot, but that
6168 looked too complicated, so I punted for now.)
6169 * The maximum signal nesting depth in the src/runtime/ support code has
6170 been reduced from 4096 to 256. (I don't know any reason for the very
6171 large old value. If the new smaller value turns out to break something,
6172 I'll probably just bump it back up.)
6173 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6175 * Many, many bugs reported by Peter Van Eynde have been added to
6176 the BUGS list; some have even been fixed.
6177 * While enabling dynamic object file loading, I tried to make the
6178 code easier to understand, renaming various functions and variables
6179 with less ambiguous names, and changing some function calling
6180 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6181 * While trying to figure out how to do the OpenBSD port, I tried to
6182 clean up some of the code in src/runtime/. In particular, I dropped
6183 support for non-POSIX signal handling, added various comments,
6184 tweaked the code to reduce the number of compilation warnings, and
6185 renamed some files to increase consistency.
6186 * To support the new automatic configuration functionality in make.sh,
6187 the source file target-features.lisp-expr has been replaced with the
6188 source file base-target-features.lisp-expr and the machine-generated
6189 file local-target-features.lisp-expr.
6190 * fixed a stupid quoting error in make.sh so that using CMU CL
6191 "lisp -batch" as cross-compilation host works again
6193 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6195 * DESCRIBE no longer tries to call itself recursively to describe
6196 bound/fbound values, so that it no longer fails on symbols which are
6197 bound to themselves (like keywords, T, and NIL).
6198 * DESCRIBE now works on generic functions.
6199 * The printer now prints less-screwed-up representations of closures
6200 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6201 * A private symbol is used instead of the :EMPTY keyword previously
6202 used to mark empty slots in hash tables. Thus
6203 (DEFVAR *HT* (MAKE-HASH-TABLE))
6204 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6205 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6206 now does what ANSI says that it should. (You can still get
6207 similar noncompliant behavior if bang on the hash table
6208 implementation with all the symbols you get back from
6209 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6210 This breaks binary compatibility, since tests for equality to
6211 :EMPTY are wired into things like the macroexpansion of
6212 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6214 * There's now a minimal placeholder implementation for CL:STEP,
6215 as required by ANSI.
6216 * An obscure bug in the interaction of the normal compiler, the byte
6217 compiler, inlining, and structure predicates has been patched
6218 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6219 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6221 * Missing ordinary arguments in a macro call are now detected even
6222 when the macro lambda list contains &KEY or &REST.
6223 * The debugger no longer complains about encountering the top of the
6224 stack when you type "FRAME 0" to explicitly instruct it to go to
6225 the top of the stack. And it now prints the frame you request even
6226 if it's the current frame (instead of saying "You are here.").
6227 * As specified by ANSI, the system now always prints keywords
6228 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6230 * The default initial SIZE of HASH-TABLEs is now smaller.
6231 * Type information from CLOS class dispatch is now propagated
6232 into DEFMETHOD bodies, so that e.g.
6233 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6235 is now basically equivalent to
6236 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6237 (DECLARE (TYPE SINGLE-FLOAT X))
6239 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6240 operation, without having to do run-time type dispatch.
6241 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6242 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6243 * Since I don't seem to be making big file reorganizations very often
6244 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6245 is overflowing my ability to conveniently back them up), I've finally
6246 checked the system into CVS. (The CVS repository is on my home system,
6247 not at SourceForge -- putting it on SourceForge might come later.)
6248 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6249 high-level GC-NOTIFY-FOO functions send their output. (There's
6250 still very little control of where low-level verbose GC functions
6251 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6252 less than it used to -- the GC-NOTIFY-FOO functions are now under
6253 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6254 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6255 in only one place in the source code, and propagates it automatically
6256 everywhere that it's needed. Thus e.g. when I bump the version from
6257 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6258 * The C source files now include boilerplate legalese and documentation
6259 at the head of each file (just as the Lisp source files already did).
6260 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6261 to his page will be replaced with a link to his new CLiki service.
6263 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6265 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6266 * The build process now looks for GNU make under the default name "gmake",
6267 instead of "make" as it used to. If GNU make is not available as "gmake"
6268 on your system, you can change this default behavior by setting the
6269 GNUMAKE environment variable.
6270 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6271 can build without error under CMU CL.
6273 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6275 * There is now a partial SBCL user manual (with some new text and some
6276 text cribbed from the CMU CL manual).
6277 * The beginnings of a profiler have been added (starting with the
6278 CMU CL profiler and simplifying and cleaning up). Eventually the
6279 main interface should be through the TRACE macro, but for now,
6280 it's still accessed through vaguely CMU-CL-style functions and macros
6281 exported from the package SB-PROFILE.
6282 * Some problems left over from porting CMU CL to the new
6283 cross-compilation bootstrap process have been cleaned up:
6284 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6285 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6286 part when getting rid of the compiler *BACKEND* stuff.)
6287 ** The value of *NULL-TYPE* was screwed up, because it was
6288 being initialized before the type system knew the final
6289 definition of the 'NULL type. This screwed up several key
6290 optimizations in the compiler, causing inefficiency in all sorts
6291 of places. (I found it because I wanted to understand why
6292 GET-INTERNAL-RUN-TIME was consing.)
6293 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6294 PROCLAIM FTYPE information. Unfortunately this broke binary
6295 compatibility again, since now the forms output by DEFGENERIC
6296 to refer to functions which didn't exist in 0.6.3.
6297 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6298 can use the new (as of 0.6.3) transform for SOME into MAP into
6300 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6301 values to (INTEGER 0 1000000), so that the time code will no longer
6302 occasionally get blown up by Linux returning 1000000 microseconds
6303 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6304 its output conform to the ANSI spec. (Alas, this makes its output
6305 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6306 * A full call to MAP NIL with a single sequence argument no longer conses.
6307 * fixes to problems pointed out by Martin Atzmueller:
6308 * The manual page no longer talks about multiprocessing as though
6309 it were currently supported.
6310 * The ILISP support patches have been removed from the distribution,
6311 because as of version 5.10.1, ILISP now supports SBCL without us
6312 having to maintain patches.
6313 * added a modified version of Raymond Toy's recent CMU CL patch for
6314 EQUALP comparison of HASH-TABLE
6316 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6318 * The system still can't cross-compile itself with
6319 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6320 entails), but at least it can compile more of itself that way
6321 than it used to be able to, and various buglets which were uncovered
6322 by trying to cross-compile itself that way have now been fixed.
6323 * This release breaks binary compatibility again. This time
6324 at least I've incremented the FASL file format version to 2, so that the
6325 problem can be detected reliably instead of just causing weird errors.
6326 * various new style warnings:
6327 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6328 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6329 ** using the lexical binding of a variable named in the *FOO* style
6330 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6331 as specified by ANSI.
6332 * *RANDOM-STATE* is no longer automatically initialized from
6333 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6334 default behavior of the system is to repeat its behavior every time
6335 it's run. If you'd like to change this behavior, you can always
6336 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6337 old convention there was no comparably easy way to get the system to
6338 repeat its behavior every time it was run.
6339 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6340 FTYPE declarations has been removed, in favor of their ANSI
6341 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6342 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6343 the types of their sequence arguments can be determined at compile time.
6344 This is done through a new open code expansion for MAP which eliminates
6345 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6346 argument types can be determined at compile time.
6347 * The optimizer now transforms COERCE into an identity operation when it
6348 can prove that the coerced object is already of the correct type. (This
6349 can be a win for machine generated code, including the output of other
6350 optimization transforms, such as the MAP transform above.)
6351 * Credit information has been moved from source file headers into CREDITS.
6352 * Source file headers have been made more standard.
6353 * The CASE macro now compiles without complaining even when it has
6356 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6358 * (Note that the way that the PCL macroexpansions were rewritten
6359 to accommodate the change in DEFGENERIC below breaks binary
6360 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6361 not run under sbcl-0.6.2. Once we get out of alpha releases,
6362 i.e. hit release 1.0.0, we'll probably try to maintain binary
6363 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6364 and sbcl-1.4.4. Until then, however, it might be fairly common
6365 for maintenance releases to break binary compatibility.)
6366 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6368 * The reporting of unhandled signals has been changed to print some
6369 explanatory text as well as the report form. (Previously only
6370 the report form was printed.)
6371 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6372 it defines, so that the compiler no longer issues undefined function
6373 warnings for compiled-but-not-yet-loaded generic functions.
6374 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6375 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6376 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6377 section of the ANSI spec are supported.
6378 * The "" nickname for the "KEYWORD" package has been removed.
6379 The reader still handles symbol tokens which begin with a package marker
6380 as keywords, but it doesn't expose its mechanism for doing so in the
6381 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6382 * The system now issues STYLE-WARNINGs for contradictory TYPE
6383 proclamations. (Warnings for contradictory FTYPE proclamations would
6384 be nice too, but those can't be done usefully unless the type system
6385 is made smarter about FUNCTION types.)
6386 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6387 systematized, so that "*target-*.lisp is supposed to exist only on the
6388 target and imply that there's a related file which exists on the
6389 host, and *host-*.lisp is supposed to exist only on the host and imply
6390 that there's a related file which exists on the target. This involves a
6391 lot of renaming. Hopefully the acute confusion caused by the renaming
6392 will be justified by the reduction in chronic confusion..
6393 ** runtime-type.lisp -> early-target-type.lisp
6394 ** target-type.lisp -> late-target-type.lisp
6395 ** early-host-format.lisp -> early-format.lisp
6396 ** late-host-format.lisp -> late-format.lisp
6397 ** host-error.lisp -> misc-error.lisp
6398 ** early-error.lisp -> early-target-error.lisp
6399 ** late-error.lisp -> late-target-error.lisp
6400 ** host-defboot.lisp -> early-defboot.lisp
6401 ** code/misc.lisp -> code/target-misc.lisp
6402 ** code/host-misc.lisp -> code/misc.lisp
6403 ** code/numbers.lisp -> code/target-numbers.lisp
6404 ** code/early-numbers.lisp -> numbers.lisp
6405 ** early-host-type.lisp -> early-type.lisp
6406 ** late-host-type.lisp -> late-type.lisp
6407 ** host-typep.lisp -> typep.lisp
6408 ** load.lisp -> target-load.lisp
6409 ** host-load.lisp -> load.lisp
6410 ** host-disassem.lisp -> disassem.lisp
6411 ** host-insts.lisp -> insts.lisp
6412 ** byte-comp.lisp -> target-byte-comp.lisp
6413 ** host-byte-comp.lisp -> byte-comp.lisp
6414 ** host-signal.lisp -> signal.lisp
6415 ** host-defstruct.lisp -> defstruct.lisp
6416 ** late-target-type.lisp -> deftypes-for-target.lisp
6417 Furthermore, several other previously target-only files foo.lisp (e.g.
6418 hash-table.lisp and random.lisp) have been split into a target-and-host
6419 foo.lisp file and a target-only target-foo.lisp file, with their key type
6420 definitions in the target-and-host part, so that the cross-compiler will
6421 know more about target types.
6422 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6423 gone away. In their place are various *BACKEND-FOO* variables
6424 corresponding to the slots of the old structure.
6425 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6426 into the target SBCL has been fixed.
6427 * The chill.lisp system for loading cold code into a running SBCL
6429 * Support for the CMU CL "scavenger hook" extension has been removed.
6430 (It was undocumented and unused in the CMU CL sources that SBCL was
6431 derived from, and stale in sbcl-0.6.1.)
6432 * Various errors in the cross-compiler type system were detected
6433 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6434 (enabling various consistency checks). Many of them were fixed,
6435 but some hard problems remain, so the compiler is back to
6436 running without *TYPE-SYSTEM-INITIALIZED* for now.
6437 * As part of the cross-compiler type system cleanup, I implemented
6438 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6439 * I have started adding UNCROSS calls throughout the type system
6440 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6441 on cross-compiler input files will be able to go away, and various
6443 * CONSTANTP now returns true for quoted forms (as explicitly required
6446 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6448 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6449 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6450 (MAKE-LIST -1). In the longer term, it ought to become true
6451 that declarations are assertions even at SAFETY 1. For now, it's not
6452 quite true even at SAFETY 3, but it's at least more nearly true..
6453 (Note that this change seems to increases the size of the system by
6454 O(5%) and to decrease the speed of the compiler by 20% or more.)
6455 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6456 for the problem of printing dozens of lines of distracting information
6457 about low-level system machinery as part of the top stack frame
6458 on entry to the debugger when an undefined function was called.
6459 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6460 is not reset to COMMON-LISP-USER.
6461 * Compilation of stuff related to dyncount.lisp has been made conditional
6462 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6463 smaller. The various dyncount-related symbols have been moved into
6464 a new "SB-DYNCOUNT" package.
6465 * tty-inspect.lisp has been renamed to inspect.lisp.
6466 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6467 feature has gone away. (When we eventually port to other flavors of
6468 libc and/or Unix, we'll try to make the differences between flavors
6469 invisible at the user level.)
6470 * Various other *FEATURES* tags, and/or their associated conditionals,
6471 have been removed if obsolescent, or given better documentation, or
6472 sometimes given more-mnemonic names.
6474 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6476 * tidied up "make.sh" script
6477 * tidied up system directory structure
6478 * better "clean.sh" behavior
6479 * added doc/FOR-CMUCL-DEVELOPERS
6480 * many many small tweaks to output format, e.g. removing possibly-confusing
6481 trailing #\. character in DESCRIBE-INSTANCE
6482 * (EQUALP #\A 'A) no longer signals an error.
6483 * new hashing code, including EQUALP hashing
6484 * tidied up Lisp initialization and toplevel
6485 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6486 * command line argument processing
6487 * added POSIX-GETENV function to deal with Unix-ish environment variables
6488 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6489 terminating SBCL on EOF
6490 * non-verbose GC by default
6491 * There is no more "sbcl" shell script; the sbcl file is now the C
6492 runtime executable (just like CMU CL).
6493 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6495 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6496 symbol and package information as Lisp native symbol and package objects
6497 instead of strings naming symbols and strings naming packages. This way,
6498 whenever packages are renamed (as in warm init), debug information is
6499 transformed along with everything else.
6500 * tweaked the optimization policy declarations which control the building
6501 of SBCL itself. Now, among other things, the system no longer saves
6502 source location debugging information. (This helps two problems at once
6503 by reducing SBCL size and by keeping SBCL from trying to look for its
6504 sources -- which may not exist -- when reporting errors.)
6505 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6506 debugging and testing purposes
6507 * cleaned up printing, making the printer call PRINT-OBJECT for
6508 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6509 methods, giving nearly-ANSI behavior
6510 * converted almost all special variables to use *FOO* naming convention
6511 * deleted PARSE-TIME functionality, since it can be done portably
6512 * moved some files out of cold init into warm init
6513 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6515 * regularized formatting of source files
6516 * added an install.sh script
6517 * fixed ridiculous memory usage of cross-compiler by making
6518 compiler/alloc.lisp not try to do pooling unless it can hook
6519 itself into the GC of the cross-compilation host. Now the system
6520 builds nicely on my old laptop.
6521 * added :SB-ALLOC in target-features.lisp-expr
6522 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6523 was not implemented)
6524 * re-did condition handling and note reporting in the compiler. Notes
6525 are no longer handled by signalling conditions. Style warnings
6526 and warnings are handled more correctly and reported in such a way
6527 that it's easy to find one or the other in your output (so that you
6528 can e.g. figure out which of many problems caused COMPILE-FILE to
6530 * changed the severity of several compiler warnings from full WARNING
6531 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6532 compiler note reporting so that it doesn't use the condition system
6533 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6534 COMPILE-FILE command)
6535 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6536 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6537 no longer supported, since their implementation was deeply intertwingled
6538 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6539 * removed bogus "support" for compiler macros named (SETF FOO), and
6540 removed the compiler macro for SETF INFO (but only after making a fool
6541 of myself on the cmucl-imp mailing list by posting a bogus patch for
6542 DEFINE-COMPILER-MACRO..)
6543 * Compiled files containing forms which have side effects on the Lisp
6544 reader (such as DEFPACKAGE forms) are now handled more correctly.
6545 (Compiler queuing of top level lambdas has been suppressed by setting
6546 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6547 * deleted various currently-unused source files, e.g. gengc.lisp. They
6548 may be added back at some point e.g. when porting to other architectures,
6549 but until they are it's distracting to distribute them and to try to
6551 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6552 there were so many of them they're just distractions, and UNCROSS is
6553 known to be able to handle the current sources
6554 * moved PROFILE functionality into TRACE, so that it will be clear
6555 how the wrapping and unwrapping of functions when you profile them
6556 interacts with the wrapping and unwrapping of functions when you
6557 trace them. (Actually, the functionality isn't there yet, but at least
6558 the interface specification is there. Hopefully, the functionality will
6559 arrive with some future maintenance release.)
6560 * removed host-oops.lisp
6561 * changed signature of QUIT function to allow UNIX-CODE argument
6562 * fixed READ-SEQUENCE bug
6563 * tweaked verbose GC output so that it looks more like the progress
6564 output that ANSI specifies for functions like LOAD
6565 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6566 * added <http://sbcl.sourceforge.com> to the banner information printed by