1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.57:
3 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
4 updates of CAS-able places (similar to Clojure's swap!).
5 * bug fix: potential for infinite recursion during compilation of CLOS slot
6 typechecks when dependency graph had loops. (lp#1001799)
8 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
9 * RANDOM enhancements and bug fixes:
10 ** bug fix: the range and distribution of random integers could be
11 catastrophically wrong when the compiler derived the type of its
12 argument as a disjoint set of small integers.
13 ** bug fix: the distribution of random integers is now completely
14 uniform even when the specified limit is not a power of two.
15 (Previously some values could be about 0.1 % more probable than
16 others in the worst case.)
17 ** RANDOM on large integer arguments is generally faster and conses
18 less than before; this is visible for fixnums above a length of
19 about 24 bits, but extremely so for bignums: the old implementation
20 used time and space quadratical in the size of the argument there,
21 the new one is linear.
22 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
23 main entry point, SB-EXT:QUIT is deprecated.
24 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
25 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
26 * enhancement: FASL loading no longer grabs the world-lock.
27 * enhancement: GENCGC reclaims space more aggressively when objects being
28 allocated are a large fraction of the total available heap space.
30 * enhancement: backtraces show the correct number of arguments for frames
31 called with too many arguments.
32 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
34 * enhancement: ASDF has been updated 2.21.
35 * optimization: fewer uses of full calls to signed modular functions.
37 * optimization: typechecking alien values is typically 5 x faster.
38 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
40 * bug fix: file compilation performance issues when dumping subtypes
41 of CHARACTER (lp#994487)
42 * bug fix: fixed disassembly of some SSE instructions on x86-64.
43 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
44 OPEN. (lp#969352, thanks to Kambiz Darabi)
45 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
47 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
48 classoid even if X was not the proper name of the class. (lp#941102)
49 * bug fix: declaration leakage between lexical environments due to careless
50 use of NCONC in MAKE-LEXENV. (lp#924276)
51 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
52 *default-pathname-defaults* contains NAME or TYPE components.
53 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
54 from CL package, e.g. (loop . 10).
55 * bug fix: run-program with existent or non-existent files for :output or
56 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
57 returns NIL instead of signalling an obscure error.
58 * bug fix: fix miscompilation of some logand forms with large constant
59 arguments. (lp#974406)
60 * bug fix: account for funcallable-instance objects properly in ROOM.
61 * bug fix: incorrect octets reported for c-string decoding errors.
63 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
65 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
66 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
67 allowing faster release of memory back to the OS. (lp#991293)
68 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
69 existing deadline for the dynamic scope of its body.
70 * bug fix: compiler-internal interval arithmetic needed to be more
71 conservative about open intervals when operated on by monotonic but not
72 strictly-monotonic functions. (lp#975528)
73 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
74 it's also slightly faster. (lp#998926)
75 * bug fix: better error messages for malformed declarations.
77 * bug fix: define-condition didn't return the name of the defined condition.
79 ** improved docstrings: REPLACE (lp#965592)
81 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
82 * bug fix: fix copy-structure. When copying from stack to heap, garbage
83 could end up in the heap making GC unhappy.
84 (Thanks to James Knight, lp#911027)
86 ** SBCL can now be built using Clang.
87 ** ASDF has been updated 2.20.
88 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
89 * bug fix: don't complain about a too-hairy lexical environment for inlining
90 when the function has never been requested for inlining. (lp#963530)
92 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
93 * enhancements to building SBCL using make.sh:
94 ** --fancy can be specified to enable all supported feature enhancements.
95 ** --with-<feature> and --without-<feature> can be used to specify
96 which features to build with.
97 ** --arch option can be used to specify the architecture to build for.
98 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
99 full-blows cross-compilation.)
100 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
101 which allows specifying name of the default interning package for the
103 * enhancement: when *READ-EVAL* is true, arrays with element type other than
104 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
105 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
106 null alien when malloc() fails. (lp#891268)
107 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
108 conditions can be conveniently accessed through function with the same
109 name, analogously to CONTINUE.
110 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
111 from the printer by type, causing an error marker to be printed instead.
112 (Thanks to Attila Lendvai)
113 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
114 generally behave better when errors occur during printing.
115 * enhancement: the test runner now takes a --report-skipped-tests argument
116 to report the individual tests skipped as well as the number of skipped
118 * enhancement: undefined functions now appear in backtraces as ("undefined
119 function") instead of ("bogus stack frame") on x86oids.
120 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
121 deadlock errors are reported in an easier-to-decipher manner.
122 * enhancement: DESCRIBE on type designators reports the expansion in more
124 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
125 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
126 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
127 * enhancement: better disassembly of segment-prefixes on x86 and other
128 instruction prefixes (e.g. LOCK) on x86 and x86-64.
129 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
130 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
131 * optimization: SUBSEQ on vectors of unknown element type is substantially
133 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
134 be stack-allocated. (lp#902351)
135 * optimization: the compiler is smarter about representation selection for
136 floating point constants used in full calls.
137 * optimization: the compiler no longer refuses to coerce large fixnums to
138 single floats inline, except on x86 where this limitation is still
140 * optimization: truncation operations on integers with constant divisor
141 arguments 1 and -1 are optimized away.
142 * bug fix: deadlock detection could report the same deadlock twice, for
143 two different threads. Now a single deadlock is reported exactly once.
144 * bug fix: interval-arithmetic division during type derivation did not
145 account for signed zeros.
146 * bug fix: compiler error when typechecking a call to a function with
147 non-constant keyword arguments.
148 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
149 * bug fix: condition slot accessors no longer cause undefined function
150 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
151 form that defines them. (lp#896379)
152 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
154 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
155 bogusly report NIL, T.
156 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
157 required arguments ignored and performed assignments to others.
159 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
160 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
161 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
162 * bug fix: redefining a function whose previous definition contained an
163 unknown type no longer causes a style-warning. (lp#806243)
164 * bug fix: undefined functions now appear in backtraces as ("undefined
165 function") instead of ("bogus stack frame") on non-x86oids.
166 * bug fix: backtraces are no longer cut off at ("undefined function") when
167 called under certain circumstances (involving a caller-allocated stack
169 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
170 systems. (regression since 1.0.53)
171 * bug fix: GC deadlocks from dladdr() on certain platforms.
172 * bug fix: broken standard streams no longer automatically cause recursive
173 errors on debugger entry.
174 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
175 (regression since 1.0.53)
176 * bug fix: attempts to stack allocate a required argument to a function with
177 an external entry point caused compiler-errors.
178 * bug fix: compiler notes for failed stack allocation for a function argument
179 no longer claim to be unable to stack allocate the function.
180 * bug fix: COERCE now signals a type-error on several coercions to
181 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
182 * bug fix: missing failure-to-stack-allocate compiler notes for some
183 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
184 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
186 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
188 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
189 * minor incompatible changes:
190 ** RENAME-FILE on a symbolic links used to rename the linked-to file
192 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
193 directory, but now signal an error instead. Use TRUENAME to resolve the
194 pathname if you wish to delete the linked directory, and DELETE-FILE if
195 you wish to delete the
196 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
197 symbols associated with it will trigger a compile-time warning.
198 * thread-related enhancements:
199 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
200 Many thanks to generous donors!)
201 ** Threading is now more reliable on non-Linux platforms. We still don't
202 consider threads on non-Linux platforms good enough to enable them by
203 default, but they're in a clearly better shape now.
204 ** Deadlines supported now on all platforms.
205 ** All blocking functions in the threading API now have a :TIMEOUT
207 ** Semaphore notification objects have been added to SB-THREAD.
208 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
209 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
210 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
211 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
212 using an API anologous to defining new SETFable places.
213 * GC-related enhancements and bug fixes:
214 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
215 and Gb suffixes. Default is megabytes as before.
216 ** on GENCGC targets, the default dynamic space size is now 512Mb for
217 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
218 exception, defaulting to mere 444Mb to fit under default ulimits.) The
219 new defaults are in place to prevent hitting swap on low-end systems.
220 Use build-time option --dynamic-space-size to build an SBCL with
221 another default, or the runtime option to adjust the size at startup: a
222 good size is at most equal to the amount of physical memory the system
224 ** on GENCGC targets, nursery and generation sizes now default to 5% of
226 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
227 refuses to create SIMPLE-FUN objects.
228 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
230 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
231 validation of pointer objects as GENCGC does, instead of a
232 comparatively weak bounds-check against the heap spaces.
233 * SB-BSD-SOCKETS bug fixes:
234 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
235 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
236 systems with getaddrinfo().
237 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
238 safe outside systems with getaddrinfo().
239 * enhancement: ASDF has been updated 2.019.
240 * enhancement: special-case TCO prevention for functions which never return
241 extended to untrusted types, keeping one more frame's worth of debug
242 information around in many cases.
243 * enhancement: debug-names of anonymous and local function are more
244 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
245 * enhancement: on win32, ABS of complex floats guards better against
246 overflows. (lp#888410)
247 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
248 process exiting with code 1. (lp#676987)
249 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
250 the system where on the filesystem the SBCL sources themselves are
251 located. (Thanks to Zach Beane)
252 * enhancement: the compiler is now able to derive tighter bounds for
253 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
254 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
255 correctly, even on wide-fixnum builds. (lp#887220)
256 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
257 resolved to directories.
258 * bug fix: type mismatch when assigning to lexical variables no longer
259 result in fasl-dumping internal type objects. (lp#890750)
260 * bug fix: type mismatch on (SETF AREF) and function return values no
261 longer result in fasl-dumping internal type objects.
262 * bug fix: With several combinations of argument types, for example (EXPT
263 <integer> <(complex double)>), EXPT now uses double-precision throughout
264 instead of partially calculating only to single-precision. (lp#741564;
265 thanks to Lutz Euler)
266 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
267 objects when interrupted by GC on PPC.
269 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
270 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
271 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
272 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
273 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
274 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
275 targets is now 63 bits (up from 61).
276 * enhancement: DESCRIBE now reports a lambda-list and source location
277 for complext setf-expanders.
278 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
279 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
280 of multiple-valued places to be set to NIL, instead of signalling an
281 error (per a careful reading of CLHS 5.1.2.3).
282 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
283 * bug fix: repair crash in x86oid darwin signal handling emulation
284 when built with certain compilers.
285 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
286 rotation arguments on x86-64. (lp#882151)
287 * bug fix: low-level control flow optimisations could result in bogus
288 code in functions with tail and non-tail calls to local functions on
290 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
291 to emit literal characters > (code-char 4095), for comparisons with
293 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
294 on 64 bit platforms. (lp#881445)
295 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
296 delete the wrong file when using relative pathnames. (lp#882877)
297 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
298 sequences and :KEY NIL.
300 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
301 * enhancement: ASDF has been updated to version 2.017.
302 * enhancement: the --core command line option now accepts binaries with
304 * enhancement: when built with :sb-core-compression, core files (regular
305 or executable) can be compressed with zlib. Use the :COMPRESSION
306 argument to SAVE-LISP-AND-DIE to specify a compression level.
307 * enhancement: --[no-]merge-core-pages determines whether the runtime
308 hints the operating system that identical core pages between SBCL
309 processes should share the same physical memory. Default is to only
310 enable this for compressed cores.
311 * optimization: SLEEP no longer conses.
312 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
313 or bit-vectors when using the standard pretty-print dispatch table.
314 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
316 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
317 AREF, CHAR, etc. (lp#826971)
318 * bug fix: compiler-errors causes by integer arguments with composed of
319 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
320 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
321 expressions. (lp#770184)
322 * bug fix: complex single float literals are correctly aligned when used
323 as arguments of arithmetic operators.
324 * bug fix: on 32-bit platforms, rounding of double floats larger than a
325 fixnum is correct. (reported by Peter Keller)
326 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
327 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
329 * bug fix: redefining classes such that slots with custom allocation are
330 added or removed works again.
332 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
333 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
334 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
335 MAKE-SOCKET-STREAM if using SERVE-EVENT.
336 * enhancement: added support for socket keepalive timeout intervals
337 and probe counts on Linux.
338 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
339 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
340 * enhancement: added new toplevel options --quit and --non-interactive
342 * enhancement: the Windows port of SBCL now builds and runs on Wine
343 (thanks to Anton Kovalenko).
344 * enhancement: more, and more correct, SSE instruction definitions on
345 x86-64 (thanks to Alexander Gavrilov).
346 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
347 to help the processor execute spin loops, when applicable. Currently
348 implemented for x86 and x86-64.
349 * optimization: unsigned integer divisions by a constant are implemented
350 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
351 * optimization: improved type-derivation for LOAD-TIME-VALUE.
352 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
353 instructions. (lp#814688)
354 * bug fix: COERCE to unfinalized extended sequence classes now works.
355 (reported by Jan Moringen; lp#815155)
356 * bug fix: a compiler error during typecheck generation, reported by Eric
358 * bug fix: obsolete instance protocol fires when shared slots are added
360 * bug fix: fixed-format floating point printing with scaling factors.
362 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
363 backtraces. (lp#818460)
364 * bug fix: better backtraces for interrupted syscall frames on x86.
366 * bug fix: SSE comparison instructions can be disassembled even when one
367 operand is in memory. (lp#814702)
368 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
369 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
370 type information associated with the VALUES form.
371 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
373 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
374 first write (lp#561642).
375 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
376 * bug fix: bound propagation involving conversion of large bignums to
377 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
379 * bug fix: &REST to &MORE conversion still works in unsafe call to known
380 functions; reported by Lutz Euler (lp#826459).
381 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
384 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
385 * enhancement: errors from FD handlers now provide a restart to remove
386 the offending handler.
387 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
389 * enhancement: location of user or system initialization file can now easily
390 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
391 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
392 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
393 the thunk, as a keyword argument, :arguments.
394 * enhancement: constraint propagation is simplified (and sped up) when
395 COMPILATION-SPEED > SPEED.
396 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
397 * enhancement: debugger understands &MORE arguments better.
398 * optimization: extracting bits of a single-float on x86-64 has been
399 optimized. (lp#555201)
400 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
401 when (> SPEED SPACE).
402 * optimization: local call trampolines (x86 and x86-64) are emitted
404 * optimization: implicit value cells for dynamic-extent closed-over bindings
405 on x86 and x86-64 can hold unboxed values as well.
406 * meta-optimization: improved compilation speed, especially for large
407 functions. (lp#792363 and lp#394206)
408 * bug fix: bound derivation for floating point operations is now more
409 careful about rounding possibly closing open bounds. (lp#793771)
410 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
411 backwards incompatible change in 1.0.48.27)
412 * bug fix: occasional debugger errors in when a type-error occured in a
413 function with dynamic-extent &rest list.
414 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
415 boa-construtors can be used to initialized structure slots.
416 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
417 (lp#795705, regression)
418 * bug fix: DIRECTORY works better on logical pathnames.
419 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
420 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
421 * bug fix: the compiler no longer constant-folds NaNs in
422 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
423 * bug fix: FORMAT now handles floating point rounding correct, eg.
424 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
426 * bug fix: style warning during lambda-list introspection of generic
427 functions with both optional and key argments.
428 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
430 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
433 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
434 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
435 interrupts for its body.
436 * enhancement: source locations are now available for files loaded as
437 source, compile-time-too evaluation, and initialization files.
438 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
439 virtual source-file information, eg. overriding input-file of COMPILE-FILE
440 when a temporary file is used for compilation.
441 * enhancement: ASDF has been updated to version 2.015.3.
442 * enhancement: backtraces involving frames from the default evaluator are
444 * enhancement: RUN-PROGRAM works with user-defined binary input and output
446 * enhancement: more informative compile-time warnings and runtime errors for
447 type-errors detected at compile-time.
448 * enhancement: deadlock detection for mutexes and spinlocks.
449 * enhancement: dynamic-extent for &rest lists stack allocate only their
450 spines, not their argumets. While portable code should not rely on this,
451 particularly in combination with inlining, it should make dynamic-extent
452 easier to use safely.
453 * enhancement: SB-POSIX improvements:
454 ** WNOHANG and WUNTRACED are exported.
455 ** SYSCALL-ERROR now also provides the name of the failing system call.
456 * enhancement: --script improvements:
457 ** errors on standard input, output, and error streams are handled and
458 cause scripts to exit silently, making them easier to use in shell
460 ** backtraces from scripts now go to standard error instead of the
461 terminal even if one is available.
462 ** --script can be an argument, causing the script to be loaded from
464 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
465 strings to foreign memory.
466 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
467 a file, making it easier to understand heap dynamics.
468 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
469 allows the compiler to automatically elide rest-list allocation so long as
470 the call sites are in functions that the compiler knows cannot escape.
472 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
473 especially in safe code when none of the required arguments have changed
475 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
476 uninterruptible, as well as blocking reads from socket streams created
477 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
478 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
479 from the to-char if the from-char is not a dispatch-macro character.
480 * bug fix: references to undefined variables in function calls that are
481 optimized away now signal a runtime error. (lp#722734)
482 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
483 types from a function defined in the same file. (regression from
485 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
487 * bug fix: spurious errors during QUIT when standard streams were closed.
489 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
490 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
491 years, is now no longer supported.
492 * enhancement: read() and write() have been added to SB-POSIX.
493 * enhancement: types of DEFSTRUCT constructors are proclaimed more
494 accurately, allowing better typechecking of call-sites.
495 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
496 are no longer caught. (reverted to pre 1.0.34 behaviour)
497 * optimization: slightly faster ISQRT. (lp#713343)
498 * bug fix: better support for Solaris /bin/sh in sh-based tests.
499 * bug fix: TRACE behaves better when attempting to trace undefined
500 functions. (lp#740717)
501 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
502 to (FUNCALL #'(LAMBDA ...) ...).
503 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
504 a compile-time error. (lp#720382)
505 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
507 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
508 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
509 optimization. (regression from 1.0.45.18/1.0.46.15)
510 * bug fix: package locks did not protects against compile-time side-effects
511 of DEFUN. (lp#675584)
512 * bug fix: --dynamic-space-size argument is validated more carefully.
514 * bug fix: memory fault from printing a malformed simple-condition.
516 * bug fix: redefining classes so that slot-definition classes change now
517 engages the obsolete instance protocol. (lp#766271)
518 * bug fix: constant improper lists could break source coverage recording.
520 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
523 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
524 * bug fix: fix mach port rights leaks in mach exception handling code on
525 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
527 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
528 * enhancement: redefinition warnings for macros from different files. (lp#434657)
529 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
530 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
531 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
532 processed using EVAL -- now the appropriate toplevel form is reported instead.
533 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
534 declarations. (lp#726331)
535 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
536 that NIL/NULL is excluded from the type.
537 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
539 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
541 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
542 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
543 stack-allocated values out of their dynamic-extent. (lp#310175)
544 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
545 x86-64 builds caused a type-error.
546 * bug fix: calling COMPILE with something else than a lambda-expression as the
547 second argument reports a more sensible error. (lp#718905)
548 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
549 are detected. (lp#520607)
550 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
552 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
553 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
554 methods. (regression from 1.0.45.18)
555 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
556 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
557 * bug fix: several foreign functions accepting string also accepted NIL and
558 consequently caused a memory fault at 0 now signal a type-error instead.
560 * bug fix: under rare circumstances, constraint propagation could rewrite a
561 variable reference to refer to a variable not in scope, causing an error
562 during physical environment analysis when attempting to close over the
563 variable. (lp#551227)
564 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
566 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
567 * enhancement: largefile support on Solaris.
568 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
569 arguments (lp#710017)
570 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
571 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
573 * optimization: ERROR and CERROR are approximately 5 times faster.
574 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
575 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
576 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
577 up instance creation in those cases.
578 * optimization: arithmetic operations with multiple constant arguments in now
579 have them reduced at compile-time. (lp#676414)
580 * optimization: determining current character position on string-streams for
581 pretty-printing was overly slow.
582 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
583 lifetime analysis to overwrite closed-over variables (lp#681092).
584 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
585 were not handled correctly (lp#713063).
586 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
588 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
589 mistake. (lp#667297).
590 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
591 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
592 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
593 unintern the wrong symbol with the same name. (lp#693796)
594 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
595 making it possible to restore the initial table if it has been messed up.
598 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
599 * enhancement: ~/ and ~user/ are treated specially in pathnames.
600 Refer to documentation for details.
601 * enhancement: ASDF has been updated to version 2.010.
602 * optimization: mutated closed-over variables that are only accessed by
603 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
604 declared to be DYNAMIC-EXTENT) are stored directly in their containing
605 stack frame, rather than allocating a VALUE-CELL (lp#586103).
606 * optimization: UNWIND-PROTECT cleanup functions are now declared
608 * bug fix: backtracing function with &REST arguments now shows the full
609 argument list. (lp#310173)
610 * bug fix: return types for functions with complex lambda-lists are now
611 derived properly (lp#384892)
612 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
613 long string arguments slowed the compiler down to a crawl.
614 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
615 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
616 in the DEFMETHOD body.
617 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
618 messages, being instead replaced with the corresponding function name.
619 * bug fix: don't derive overly complex unions of numeric types for arithmetic
620 operators. (lp#309448)
622 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
623 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
624 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
625 * enhancement: ALLOCATION-INFORMATION also provides the page the object
627 * enhancement: default dynamic-space size can be configured at build-time
628 without touching source, using the --dynamic-space-size argument to make.sh.
629 * enhancement: DESCRIBE recognizes symbols naming optimization policy
630 qualities, and mentions ALWAYS-BOUND declarations.
631 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
633 * enhancement: ASDF has been updated to 2.009.
634 * enhancement: the system detects known type-erros in calls better,
635 signalling a full warning about violated proclaimed FTYPEs and violations
636 of derived FTYPEs within the same file, including self-calls.
637 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
638 * optimization: constant-folding exploits numeric and character types, in
639 addition member types.
640 * optimization: numeric, character and member types that are inhabited by
641 exactly one value are tested with EQL.
642 * optimization: more conditional branches are eliminated during IR1.
643 Branches are simplified before performing if/if-conversion, and simple
644 equivalent branches (that only read the same constant or variable) are
646 * improvements to the Windows port:
647 ** change: canonical unparsing form for pathname namestrings now uses / as
648 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
649 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
650 on Windows. (thanks to Kalyanov Dmitry)
651 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
653 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
654 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
655 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
656 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
658 * bug fix: interrupts arriving during CL:OPEN caused an error.
659 * bug fix: overeager character buffering could cause input to block
660 spuriously when reading from a pipe (lp#643686)
661 * bug fix: more efficient timer expiry should avoid starvation on systems
662 where number of SIGALRMs per second is restricted. (lp#375515)
663 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
664 * bug fix: compile-times no longer scale linearly with the size of
665 quoted lists in source-code. (lp#654289)
666 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
667 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
668 so badly. (lp#654485)
669 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
670 an error for eg. STRUCTURE. (lp#458015)
671 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
672 (lp#613871, thanks to Roman Marynchak)
673 * bug fix: more reliable &REST list type derivation. (lp#655203)
674 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
675 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
676 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
677 also declared NOTINLINE. (lp#655581)
678 * bug fix: the compiler could attempt to emit constant left shifts of
679 greater value than n-word-bits. (lp#309063)
680 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
681 type information for the function being set. (lp#659220)
682 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
683 containing self-calls were recompiled with a new signature, and failed
684 to warn when a self-call using the old signature was left in. (lp#655126)
685 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
686 :DEFAULT when the default external had character size other than 8 bits.
688 * bug fix: derived types of functions in the same file were implicitly
689 trusted, leading to potential heap corruption when those function were
690 defined incompatibly. (lp#657499)
691 * bug fix: existing ASDF source registries are ignored when building
693 * bug fix: short-form DEFSETF checks that the second argument is a symbol
694 (lp#655824, thanks to Roman Marynchak)
695 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
696 package-lock violation was detected. (lp#660752)
697 * bug fix: the system can store different docstrings for a single function
698 under different names. (lp#661631, regression from 1.0.29.24)
699 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
700 properly. (lp#384801)
701 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
702 of specified length could confuse the type derivation in unsafe code.
704 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
705 fork with multiple Lisp threads running is made on every platform,
706 not just Darwin. (lp#451111)
707 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
708 around when core was saved, which could cause undefined behaviour when the
710 * bug fix: Allow UNTRACE of functions that are no longer defined
711 (lp#667657, thanks to Attila Lendvai)
712 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
713 compile-time warning (lp#664373, thanks to Stas Boukarev)
715 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
716 * incompatible change: FD-STREAMS no longer participate in the serve-event
717 event-loop by default. (lp#316072)
718 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
719 affects streams from CL:OPEN.
720 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
721 default, but this is liable to change: applications needing serve-event
722 for socket streams should explicitly request it using :SERVE-EVENTS T
724 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
726 * enhancement: CLOS effective method functions and defclass slot typechecking
727 function now have debug names for use in backtraces and profiles.
728 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
730 * enhancement: symbols are printed using fully qualified names in several
731 error and warning messages which are often associated with package
732 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
733 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
734 thanks to Andrew Golding)
735 * bug fix: reading /proc files on Linux works. (lp#425199)
736 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
738 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
739 breaking code that tried to write the value of a printer control variable.
740 (lp#581564, thanks to Stas Boukarev)
741 * bug fix: WRITE compiler macro did not handle output stream designators
742 correctly. (lp#598374, thanks to Stas Boukarev)
743 * bug fix: better availability of names of foreign functions in backtraces
744 on Linux. (lp#626962, thanks to Stas Boukarev)
745 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
746 lp#627581, thanks to Josh Elsasser and Jim Wise)
747 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
748 thanks to Josh Elsasser)
749 * bug fix: using aliases for builtin classes as defmethod specializers
750 without adding DEFTYPEs for them works. (lp#618387)
751 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
753 * bug fix: legally dynamic-extent lists and vectors used as
754 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
755 * bug fix: inline-expansion creating references to dead lambda-variables
756 (lp#454681, thanks to Alexey Dejneka)
757 * bug fix: better error message for bogus numerical arguments to RANDOM.
758 (lp#598986, thanks to Stas Boukarev)
759 * bug fix: the compiler occasionally inlined references from incompatible
760 environments occurs. (lp#308951)
761 * bug fix: the compiler threw an error when trying to compile a local
762 function (labels or flet) known to take a specialized complex argument.
763 (not in launchpad, reported by sykopomp in #lispgames)
764 * bug fix: package-locks failed to protect against compile-time effects of
765 DEFUN when the symbol previously had a macro definition. (lp#576637)
766 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
767 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
768 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
769 * bug fix: evaluation in debugger REPL works using the global context when
770 in frames that do not have sufficient debug information.
771 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
773 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
775 * bug fix: interrupt taking longer than the requested period caused SLEEP
776 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
778 changes in sbcl-1.0.42 relative to sbcl-1.0.41
780 ** Cross-compilation host is now specified to make.sh using
781 command-line argument --xc-host=<command> instead of a positional
782 argument. (thanks to Daniel Herring)
783 ** Install location can be specified to make.sh using command-line
784 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
785 * optimization: The default implementation of
786 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
787 * enhancement: Explicit memory barrier operations are now available for use
788 by multithreaded code. See documentation for details.
789 * enhancement: Experimental support for threading on Linux/PPC.
790 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
791 * bug fix: EXPT signals an error if first argument is a zero and second
792 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
793 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
794 (lp#576594, thanks to Roman Marynchak)
795 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
796 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
798 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
799 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
800 cached, leading to many fewer expensive calls to
801 COMPUTE-APPLICABLE-METHODS.
802 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
803 CLASS argument, search for and call an appropriate optimized ctor function
805 * bug fix: WRITE always returns the correct value.
807 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
808 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
809 * bug fix: Name conflicts between symbols passed as arguments to a single
810 call to IMPORT no longer add multiple symbols with the same name to the
811 package (detectable via DO-SYMBOLS).
812 * bug fix: support building without the dlshim on darwin x86 and x86-64
814 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
816 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
817 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
819 * bug fix: linkage-table entries on PPC now no longer overflow their
820 space allocation (potentially causing crashes if they are written out
822 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
823 platforms, preventing the GC from seeing stale pointers on the control
824 stack in subsequent GCs (which would, and does, break invariants).
825 * bug fix: 32-bit unicode external formats now work on big-endian systems.
826 * bug fix: Literal characters with code points greater than about 32767
827 now work on PPC UNICODE builds.
828 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
829 high order bits are explicitly cleared out. In some contrived situations,
830 this could lead to wrong results in mixed real/complex float arithmetic.
831 * bug fix: Fix function/macro redefinition warnings when building with
832 clisp. (lp#576787, thanks to Josh Elsasser)
833 * new platform: experimental support for ppc/openbsd (thanks to Josh
835 * bug fix: Floating-point traps now work on ppc/linux.
837 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
838 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
839 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
840 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
841 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
842 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
843 SB-THREAD:GRAB-MUTEX.
844 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
845 contain additional data structures and tools for concurrent programming;
846 at the moment it contains a lock-free queue, and a lock-free mailbox
848 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
849 GET-MUTEX but takes &key rather than &optional parameters. Also added
850 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
852 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
853 SB-THREAD:WAIT-ON-SEMAPHORE.
854 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
856 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
857 conditions to defer the deadline for forever.
858 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
860 * enhancement: errors from NO-APPLICABLE-METHOD and
861 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
862 generic function call.
863 * enhancement: SB-BSD-SOCKET improvements
864 ** sockets and socket streams now have a more informative printed
865 representation based on the corresponding SOCKET-NAME and
867 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
869 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
870 CL:CLOSE when appropriate, and no longer disassociates the stream
871 from the socket if close failed. (lp#543951)
872 * improvements to the instrumenting profiler
873 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
874 ** optimization: counters no longer use locks for the overflow mode.
875 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
876 incurred an off-by-one miscount.
877 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
878 * enhancement: improved DEFMETHOD pretty-printing.
879 * enhancement: perform range reduction when arguments are too large for
880 x87's transcendentals (instead of returning 0). (lp#327192)
881 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
882 some of CL-PPCRE's macros. (lp#570079)
883 * enhancement: our machine code is slightly less hostile to valgrind on
885 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
886 to Robert Swindells and Aleksej Saushev)
887 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
888 * bug fix: a rare case of startup-time page table corruption.
889 * bug fix: a semaphore with multiple waiters and some of them unwinding due
890 to timeouts could be left in an inconsistent state.
891 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
892 * bug fix: misoptimization of multiplication by one in
893 (SB-C::FLOAT-ACCURACY 0) policies.
894 * bug fix: miscounts in SB-PROFILE.
895 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
896 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
897 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
898 up itself" (March 2010) for further details.
899 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
900 against length of the list if the element is found before the specified
901 END is reached. (thanks to Alec Berryman, lp#554385)
902 * bug fix: errors signalled during package graph modification no longer
903 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
904 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
905 :SB-DOC feature. (lp#552564)
906 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
907 * bug fix: more robust runtime executable path detection. (lp#375549)
908 * bug fix: GCD always returns positive values. (lp#413680)
909 * bug fix: Converting division to multiplication by reciprocal handles
911 * bug fix: We were too eager in eliding range reduction tests on x87.
912 The maximal magnitude is 2^63, not 2^64.
913 * bug fix: Transforms for TRUNCATE don't die when the result is completely
915 * bug fix: Maybe restore buildability on Alpha.
916 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
918 * bug fix: RANDOM-STATE can be printed readably again.
919 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
920 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
921 types) could result in type mismatches during compilation.
923 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
924 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
925 stack frame thrown from.
926 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
927 compiler optimization qualities inside dynamic extent of its body.
928 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
929 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
931 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
932 constraint propgation, allowing better compilation eg. when used to
933 access structures with WITH-SLOTS. (lp#520366)
934 * optimization: the compiler is now more aware of the type of the underlying
935 storage vector for multidimensional simple arrays resulting in better code
936 for accessing such arrays.
937 * optimization: passing NIL as the environment argument to TYPEP no longer
938 inhibits optimizing it. (lp#309788)
939 * optimization: more efficient register usage when handling single-float
940 arguments on x86-64. (thanks to Lutz Euler)
941 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
942 pre-allocated temporary vectors. (lp#496249)
943 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
944 in :INITIAL-CONTENTS. (lp#523612)
945 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
946 functions. (lp#524707)
947 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
948 WITH-SLOTS usages during compilation.
949 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
950 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
951 all x86oid platforms with :UD2-BREAKPOINTS target feature.
952 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
953 instruction (tested on x86oid linux with ud2-breakpoints).
954 * bug fix: slam.sh now works on win32.
955 * bug fix: better differences of numeric types. (lp#309124)
956 * bug fix: arrays declared intersection and union types can have their
957 upgraded element type derived. (lp#316078)
958 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
959 threads started during profiling. (lp#472499)
960 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
962 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
963 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
964 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
965 values instead of signaling an error. (lp#309093)
966 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
968 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
969 declarations (lp#497321)
970 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
971 and failed to detect circular lists (lp#452008)
972 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
974 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
975 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
976 due to it, so that handlers can run.
977 * bug fix: reparsing undefined types if they have become defined since
979 * bug fix: missing &REST type in a proclamation for a function with both
980 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
981 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
982 expanded calls (lp#542174)
983 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
984 than just at toplevel form.
986 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
987 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
988 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
989 but work on type specifiers.
990 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
991 to name a type specifier.
992 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
993 specifier is valid where "valid" basically means "would be accepted as
994 second argument of TYPEP".
995 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
996 returns the function's declared, or derived FTYPE.
997 * new feature: SB-POSIX now supports accessing the d_ino member of
998 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
999 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1000 provide for seeding a RANDOM-STATE object with user-provided data or
1001 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1002 attempt to initialize the returned state from the operating system's
1003 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1004 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1005 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1006 * bug fix: Fix grammar and style issues for the docstrings of
1007 printer-related variables and functions. (Thanks to mon_key; launchpad
1009 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1011 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1012 in a row even though a handler defered the deadline long into the
1014 * bug fix: A deadline handler was run without interrupts enabled for a
1015 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1016 in infinitely spinning, non-killable threads.
1017 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1018 before reaching the erring stack frame.
1019 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1020 real power. (launchpad bug lp#525949)
1021 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1022 GENCGC platforms. (launchpad bug lp#529014)
1023 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1024 (launchpad bug lp#525916)
1025 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1026 (Thanks to Robert Goldman)
1028 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1029 * optimization: ROUND with a single single-float or double-float argument
1030 is properly inlined when possible.
1031 * optimization: Slightly better code is generated for integer<->float
1032 conversions and for single-float<->double-float conversions on x86-64.
1033 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1034 code for 32-bit and 64-bit rotations on x86-64.
1035 * bug fix: The install script changes the ownership of directories as well
1036 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1037 launchpad bug lp#508485)
1038 * bug fix: TRUNCATE with a single single-float or double-float argument is
1039 properly inlined when possible. (launchpad bug lp#489388)
1040 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1041 no longer causes a compiler error on x86 and ppc.
1042 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1043 always relative to *READTABLE* rather than the passed argument.
1045 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1046 * minor incompatible change: threading support is now enabled by default
1048 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1050 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1051 are now caught and reported just like errors during macroexpansion.
1052 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1053 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1054 * enhancement: ASDF systems can now depends on SB-QUEUE.
1055 * fixes and improvements related to Unicode and external formats:
1056 ** bug fix: error handling and restart usage in the ucs-2 external format
1058 ** there is now an implementation of the ucs-4 external format.
1059 ** the utf-16 and utf-32 external formats are supported.
1060 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1061 in the environment. setenv() and unsetenv() are also provided. (reported by
1062 Fare Rideau; launchpad bug lp#460455)
1063 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1064 loading. This ensures sensible errors for .FASL files from other
1065 implementations on case-insensitive filesystems. (reported by Willem
1066 Broekema; launchpad bug lp#489417)
1067 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1068 Willem Broekema; launchpad bug lp#489698).
1069 * bug fix: some minor code rearrangements to reenable warning-free building
1070 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1071 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1073 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1076 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1077 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1078 * improvement: support O_LARGEFILE access to files larger than 2GB on
1079 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1080 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1081 definitions for methods specializing on the passed class itself.
1082 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1083 definitions for methods specializing on the passed class itself, or on
1085 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1086 about itself during the build (e.g. for M-? in Slime), if this flag is
1087 enabled in customize-target-features.lisp. This will increase the core
1088 size by about 5-6mb, though, so it's mostly interesting to SBCL
1090 * new feature: various GENCGC tuning parameters have been experimentally
1091 documented and exported from SB-EXT. See documentation for details.
1092 * fixes and improvements related to Unicode and external formats:
1093 ** the Unicode character database has been upgraded to the
1094 Unicode 5.2 standard, giving names and properties to a number of new
1095 characters, and providing a few extra characters with case
1097 ** improvement: restarts for providing replacement input/output on coding
1098 errors for fd-stream external formats.
1099 ** improvement: where :<encoding> is a keyword corresponding to an
1100 external format the system supports, it is now possible to specify
1101 (:<encoding> :replacement <character>) as an external format which will
1102 automatically substitute <character> on encoding or decoding errors for
1103 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1105 ** improvement: the file streams underlying the standard streams (such as
1106 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1107 which uses the replacement mechanism to handle encoding errors,
1108 preventing various infinite error chains and unrecoverable I/O
1110 ** minor incompatible change: the utf-8 external format now correctly
1111 refuses to encode Lisp characters in the surrogate range (char-codes
1112 between #xd800 and #xdfff).
1113 ** fix a typo preventing conversion of strings into octet vectors
1114 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1116 ** fix a bug in the octet multibyte handling of decoding errors and the
1117 USE-VALUE restart. (launchpad bug lp#314939)
1118 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1119 restart on fd-stream decoding errors.
1120 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1121 error is near the end of file.
1122 ** fix a double-error case in unibyte octet conversions, when the first
1123 use of USE-VALUE is ignored.
1124 ** fix bugs in handling of undefined code points in unibyte encodings.
1125 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1126 streams after an UNREAD-CHAR.
1127 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1128 object is allocated in a boxed region of dynamic space.
1129 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1130 fork with multiple Lisp threads running is made, instead of going
1131 ahead with unpredictable consequences. (reported by Leslie Polzer)
1132 * bug fix: uses of slot accessors on specialized method parameters within
1133 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1134 error while finalizing the class. This fix may cause classes with slot
1135 accessors to be finalized later than previously. (reported by Lars Rune
1136 Nøstdal; launchpad bug lp#473699)
1137 * bug fix: restore buildability on the MIPS platform. (regression from
1138 1.0.30.38, reported by Samium Gromoff)
1139 * bug fix: inspecting closures is less likely to fail with a type error.
1140 * bug fix: no timer starvation when setting the system clock back.
1141 (launchpad bug lp#460283)
1142 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1143 standard pprint dispatch table as specified by CLHS.
1144 * bug fix: give CLISP a hint about a type declaration to enable it to build
1145 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1147 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1148 (reported by Attila Lendvai; launchpad bug lp#310132)
1149 * bug fix: distinguish in type specifiers between arrays that might be
1150 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1151 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1152 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1153 * bug fix: setting the value of a symbol-macro within a method in the
1154 presence of type declarations works properly again. (reported by Iban
1155 Hatchondo; launchpad bug lp#485019)
1157 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1158 * optimization: faster FIND and POSITION on strings of unknown element type
1159 in high SPEED policies. (thanks to Karol Swietlicki)
1160 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1162 * improvement: better error signalling for bogus parameter specializer names
1163 in DEFMETHOD forms (reported by Pluijzer)
1164 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1166 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1168 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1169 removes previous default initargs (reported by Lars Rune Nøstdal and
1171 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1172 lambda-lists. (reported by Peter Seibel)
1173 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1174 correctly when starting from an executable core without saved runtime
1175 options (reported by Faré Rideau, thanks to Zach Beane)
1176 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1177 an optimization note instead. (reported by Martin Cracauer)
1178 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1179 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1180 new process group if it doesn't need to share stdin with the sbcl
1181 process. (thanks to Leslie Polzer)
1182 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1183 (reported by Stanislaw Halik)
1185 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1186 * improvement: stack allocation is should now be possible in all nested
1187 inlining cases: failure to stack allocate when equivalent code is manually
1188 open coded is now considered a bug.
1189 * improvements related to Unicode:
1190 ** the Unicode character database has been upgraded to the
1191 Unicode 5.1 standard, giving names and properties to a number of new
1192 characters, and providing a few extra characters with case
1194 ** the system now recognizes and produces names for Unicode Hangul
1195 syllable characters.
1196 ** the EBCDIC-US external-format is now supported for octet operations
1197 (as well as for stream operations).
1198 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1199 be used to output toplevel compile-time effects into a separate .CFASL
1201 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1202 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1204 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1206 * optimization: division of floating point numbers by constants uses
1207 multiplication by reciprocal when an exact reciprocal exists.
1208 * optimization: multiplication of single- and double-floats floats by
1209 constant two has been optimized.
1210 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1211 sufficient type information is available. (thanks to Leslie Polzer)
1212 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1213 known structure objects are as efficient as defstruct generated accessors.
1214 * optimization: unused vector creation can now be optimized away.
1215 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1216 * improvement: a STYLE-WARNING is signalled when a generic function
1217 clobbers an earlier FTYPE proclamation.
1218 * improvement: the compiler is able to track the effective type of
1219 generic function across method addition and removal even in the
1220 absence of an explicit DEFGENERIC.
1221 * improvement: DESCRIBE now reports on symbols naming undefined
1222 but assumed or declared function as well.
1223 * improvement: recompilation of systems using SB-GROVEL now works
1224 (thanks to Leslie Polzer)
1225 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1226 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1228 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1229 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1230 well as user defined declaration names.
1231 ** VARIABLE-INFORMATION is now aware of alien variables.
1232 * improvement: improved address space layout on OpenBSD (thanks to Josh
1234 * improvement: pretty-printing of various Lisp forms has been improved
1235 (thanks to Tobias Rittweiler)
1236 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1237 unused were deleted in safe code. (reported by John Fremlin)
1238 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1240 * bug fix: some out-of-line array predicates were missing (reported by
1242 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1244 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1245 (thanks to Larry D'Anna)
1246 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1247 as well. (reported by Josh Elsasser)
1248 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1249 leading to possible attempts to delete the same file twice. See docstring
1250 on DELETE-FILE for details. (reported by John Fremlin)
1251 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1252 designator argument, rather than its truename. (reported by Luis
1254 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1255 information about some array types. (thanks to Luis Oliveira)
1256 * bug fix: moderately complex combinations of inline expansions could
1257 be miscompiled if the result was declared to be dynamic extent.
1258 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1259 form (+ <variable> <integer>) were miscompiled under certain
1261 * bug fix: in some cases no compiler note about failure to stack allocate
1262 was emitted, even if the objects were in fact heap allocated.
1263 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1264 allocation could cause objects users might reasonably expect to
1265 be heap allocated to be stack allocated.
1266 * bug fix: DESCRIBE signalled an error for generic functions under
1267 certain circumstances. (thanks to Leslie Polzer)
1268 * bug fix: Fixed spelling of an error message.
1270 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1271 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1272 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1273 of SB-THREAD:THREAD-ERROR-THREAD.
1274 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1275 * new feature: docstrings for local and anonymous functions are no longer
1276 discarded. (thanks to Leslie Polzer)
1277 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1278 values in other threads.
1279 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1280 about object allocation.
1281 * optimization: division of a real float by a complex float is implemented
1282 with a specialised code sequence.
1283 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1284 keywords is an order of magnitude faster.
1285 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1286 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1287 methods, and similarly for non-standard metaclass classes as long as there
1288 are no methods additional on MAKE-INSTANCE.
1289 * optimization: more efficient type-checks for FIXNUMs when the value
1290 is known to be a signed word on x86 and x86-64.
1291 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1292 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1294 * optimization: compiler is smarter about delegating argument type checks to
1296 * optimization: several character functions are now compiled somewhat more
1297 efficiently. (reported by Lynn Quam)
1298 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1299 * improvement: less unsafe constant folding in floating point arithmetic,
1300 especially for mixed complex/real -float operations.
1301 * optimization: constant double and single floats are stored in native
1302 unboxed format on x86[-64].
1303 * optimization: smarter code for arithmetic operations with constant floats,
1304 complex floats, or integers on x86[-64].
1305 * optimization: smarter code for conjugate/multiplication of float complexes
1306 and abs/negate of floats on x86-64.
1307 * optimization: more efficient complex float and real float operations on
1309 * improvement: complex float division is slightly more stable.
1310 * improvement: DESCRIBE output has been reworked to be easier to read and
1311 contains more pertinent information.
1312 * improvement: failure to provide requested stack allocation compiler notes
1313 provided in all cases (requested stack allocation not happening without a
1314 note being issued is now considered a bug.)
1315 * bug fix: SB-POSIX exports the documented types and functions
1316 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1317 types. (reported by "abhi")
1318 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1319 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1320 (thanks to Paul Khuong)
1321 * bug fix: looping around HANDLER-CASE could silently consume stack space
1322 on each iteration. (reported by "foobar")
1323 * bug fix: better error signalling when calls to functions seeking elements
1324 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1325 (reported by Tobias Rittweiler)
1326 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1327 directory components now works as it used to. (various prolems reported by
1328 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1329 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1330 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1331 * bug fix: bogus undefined variable warnings from fopcompiled references to
1332 global variables. (thanks to Lars Rune Nøstdal)
1333 * bug fix: foreign function names should now appear in backtraces on
1334 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1335 * bug fix: SETF compiler macro documentation strings are not discarded
1337 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1338 (thanks to Alex Plotnick)
1339 * bug fix: SLEEP accepts large integer arguments, truncating them to
1340 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1341 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1342 * bug fix: compiler notes for expensive slot type checks could be emitted
1343 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1345 changes in sbcl-1.0.29 relative to 1.0.28:
1346 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1347 https://bugs.launchpad.net/sbcl
1348 Bugs can be reported directly there, or by sending email to
1349 sbcl-bugs@lists.sourceforge.net
1350 (no subscription required.)
1351 * minor incompatible change: under weak type checking policy integer
1352 types are weakened less aggressively.
1353 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1354 allowed to return, which causes SBCL to quit with exit status 0. Previously
1355 if the function returned with a small integer return value, that value
1356 was accidentally reused as the exit status.
1357 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1358 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1359 :HASH-FUNCTION argument. Refer to user manual for details.
1360 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1362 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1363 microseconds since the Unix epoch on all platforms.
1364 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1365 allows the compiler to safely elide boundedness checks for special
1367 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1368 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1369 efficiency measure for threaded platforms, but also valueable in
1371 * new feature: UNC pathnames are now understood by the system on Windows.
1372 * optimization: the compiler uses a specialized version of FILL when the
1373 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1375 * optimization: accesses to potentially non-simple arrays where element type
1376 is known are 50% faster.
1377 * optimization: compiler now generates faster array typechecking code.
1378 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1380 * optimization: multidimensional array accesses in the absence of type
1381 information regarding array rank are approximately 10% faster due to
1382 open coding of ARRAY-RANK.
1383 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1384 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1386 * optimization: result of call to VECTOR can now be stack allocated.
1387 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1388 as long as the resulting array is one-dimensional and has a known
1389 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1390 length of the list matches the known length of the vector does not
1391 allocate the list as an intermediate step. Ditto for VECTOR and simple
1393 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1394 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1395 known element type, and is known to be simple and one dimensional.
1396 * improvement: SBCL now emits a compiler note where stack allocation was
1397 requested but could not be provided (not in all cases, unfortunately)
1398 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1399 * improvement: pretty-printing loop has been implemented properly. (thanks
1400 to Tobias Rittweiler)
1401 * documentation: CLOS slot typechecing policy has been documented.
1402 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1403 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1404 pointer, leading to memory faults. (thanks to Bart Botta)
1405 * bug fix: better floating point exception handling on x86/OpenBSD.
1406 (thanks to Josh Elsasser)
1407 * bug fix: exit status from QUIT when called under --script was lost
1408 (reported by Hubert Kauker)
1409 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1410 same implementation of FILL to initialize the array, even if a more
1411 efficient one was available (reported by Stas Boukarev, thanks to
1413 * bug fix: potential miscompilation of array stack allocation on x86 and
1414 x86-64. (reported by Time Tossavainen)
1415 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1416 result in their subforms being treated as top level forms. (reported by
1418 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1419 than a machine register could leave garbage in the high bits of the
1420 result register (bug 316325).
1421 * bug fix: disable address space randomization Linux/x86-64 as well,
1422 not just x86-64. (reported by Ken Olum)
1423 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1424 generate incorrect code.
1425 * bug fix: #201; type inference for CONS and ARRAY types could derive
1426 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1427 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1428 could not be assigned to or bound with PROGV. (reported by Lorenz
1430 * bug fix: the value of CL:- in the inspector was the previous expression
1431 evaluated rather than the expression being evaluated.
1432 * bug fix: constants can no longer be locally declared special.
1433 * bug fix: signals delivered to threads started from foreign land (read:
1434 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1435 thread by blocking all signals and resignalling.
1436 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1437 from :INITFORM, if any.
1439 changes in sbcl-1.0.28 relative to 1.0.27:
1440 * a number of bugs in cross-compilation have been fixed, with the ultimate
1441 result that building under (at least) clisp should be much more reliable.
1442 * minor incompatible changes: echo-streams now propagate unread-char to the
1443 underlying input stream, and no longer permit unreading more than one
1445 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1446 frames, allowing for instance more reliable backtraces.
1447 * improvement: the debugger REPL can now reference lexical variables
1448 by name directly for code compiled with (DEBUG 3).
1449 * improvement: errors from malformed declarations now have better source
1450 paths associated with them. (thanks to Tobias Rittweiler)
1451 * optimization: faster local calls on x86/x86-64
1452 * bug fix: some error messages for out-of-bound array indexes confused the
1453 index and the bound. (thanks to Stas Boukarev)
1454 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1456 * bug fix: running regressions tests in shells without OSTYPE set now works.
1457 (reported by Harald Hanche-Olsen)
1458 * bug fix: more robust static space exhaustion signalling from
1459 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1460 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1461 docstring away instead of storing it under names such as (LAMBDA (X)).
1462 (reported by Leslie Polzer)
1463 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1464 (thanks to Ole Arndt for the patch)
1465 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1466 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1467 potentially-invalid effective methods in its cache.
1468 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1469 instances as well (thanks to Paul Khuong)
1470 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1471 SB-POSIX:WAITPID and their C equivalents.
1472 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1474 changes in sbcl-1.0.27 relative to 1.0.26:
1475 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1476 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1477 * improvement: the system either recovers from stack exhaustion or dies
1478 properly as opposed to leaving the user uncertain of whether the handler
1479 trampled on some random memory next to the stack or having to rely on
1480 --lose-on-corruption (which is still a good idea to use in production
1481 because stack exhaustion can happen in signal handlers which will likely
1483 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1484 1.0.25.37, reported by Harald Hanche-Olsen)
1485 * bug fix: work around signal delivery bug in darwin (regression from
1486 1.0.25.44, reported by Sidney Markowitz)
1487 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1489 changes in sbcl-1.0.26 relative to 1.0.25:
1490 * incompatible change: an interruption (be it a function passed to
1491 INTERRUPT-THREAD or a timer function) runs in an environment where
1492 interrupts can be enabled. The interruption can use
1493 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1494 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1495 potentially running out of stack. Keep in mind that in the absence
1496 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1497 acquiring a lock can enable interrupts.
1498 * incompatible change: GC-OFF and GC-ON are removed, as they were
1499 always unsafe. Use WITHOUT-GCING instead.
1500 * new feature: runtime option --disable-ldb
1501 * new feature: runtime option --lose-on-corruption to die at the
1502 slightest hint of possibly non-recoverable errors: running out of
1503 memory, stack, alien stack, binding stack, encountering a memory
1504 fault, etc. In the absence of --lose-on-corruption a warning is
1506 * enhancement: detect binding stack exhaustion
1507 * enhancement: detect alien stack exhaustion on x86/x86-64
1508 * improvement: generally more stable and reliable interrupt handling
1509 * improvement: there is a per thread interruption queue,
1510 interruptions are executed in order of arrival
1511 * improvement: a repeating timer reschedules itself when the it has
1512 finished, but expiration times are spaced equally. If an
1513 expiration time is in the past it will trigger after a short grace
1514 period that may give a chance to other things to run.
1515 * optimization: slightly faster gc on multithreaded builds
1516 * optimization: faster WITHOUT-GCING
1517 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1518 important locks so that the debugger/handler doesn't produce
1519 recursive errors or deadlock.
1520 * bug fix: real-time signals are not used anymore, so no more
1521 hanging when the system wide real-time signal queue gets full.
1522 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1524 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1525 * bug fix: fix random memory faults related to interrupts on alpha
1526 * bug fix: fix random memory faults related to interrupts on sparc
1527 * bug fix: fix deadlocks related to starting threads
1528 * bug fix: fix deadlines on locks on futex platforms
1529 * bug fix: restore errno in signal handlers
1530 * bug fix: fix deadlocks related to hash tables
1531 * bug fix: fix deadlocks in pcl
1533 changes in sbcl-1.0.25 relative to 1.0.24:
1534 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1535 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1536 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1537 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1538 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1539 better name and does not return values so stale on multiprocessor systems.
1540 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1542 * improvement: unithread builds keep track of MUTEX-VALUE.
1543 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1544 stream anymore making it thread safe to have a concurrent reader and
1545 a writer, for instance, in a pipe.
1546 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1547 arguments, making compiler-macros for SETF-functions able to inspect
1548 their constant arguments.
1549 * improvement: COMPILE-FILE reports times with millisecond accuracy
1550 (thanks to Luis Oliveira)
1551 * optimization: CHAR-CODE type derivation has been improved, making
1552 TYPEP elimination on subtypes of CHARACTER work better. (reported
1553 by Tobias Rittweiler, patch by Paul Khuong)
1554 * bug fix: setting alien structure fields of type struct by value now
1555 computes the right offset for the memory copy.
1556 * bug fix: compilation problem involving inlined calls to aliens with
1557 result type VOID. (reported by Ken Olum)
1558 * bug fix: #235a; sequential inline expasion in different policies no
1559 longer reuses the functional from the previous expansion site.
1560 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1561 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1562 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1563 cause an implied type redefinition. Regression from 1.0.21.29.
1564 * bug fix: sign-extension of small signed return values now works with C
1565 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1566 * improvements to the Windows port:
1567 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1568 Westfold, thanks to Rudi Schlatte)
1570 changes in sbcl-1.0.24 relative to 1.0.23:
1571 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1572 vector of a multidimensional SIMPLE-ARRAY.
1573 * new feature: the system now signals a continuable error if standard
1574 readtable modification is attempted. (thanks to Tobias Rittweiler)
1575 * new feature: DIRECTORY has been extended with a non-standard keyword
1576 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1577 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1578 has been robustified and documented better. (thanks to Robert Goldman)
1579 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1580 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1581 * tradeoff: constant FORMAT control strings are now compiled unless
1582 SPACE > SPEED (previously only when SPEED > SPACE.)
1583 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1585 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1587 * bug fix: lexical type declarations are now correctly reported by
1588 SB-CLTL2. (reported by Larry D'Anna)
1589 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1590 using UTF-8 as external format. (thanks to Luis Oliveira)
1591 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1592 are signalled correctly. (thanks to Stas Boukarev)
1593 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1594 designator. (thanks to Tobias Rittweiler)
1595 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1596 designator, and returns T instead of the function. (thanks to
1598 * bug fix: direct superclasses of STANDARD-CLASS and
1599 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1600 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1601 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1602 when no class with the named slot yet exists no longer causes a
1603 compile-time style-warning.
1604 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1605 in safe code. (reported by Didier Verna)
1606 * bug fix: #430; nested structure constructors can stack allocate.
1607 * bug fix: on some 64-bit platforms dynamic space size was truncated
1608 to #xffff0000 bytes. (reported by Benjamin Lambert)
1609 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1610 REPL unusable. (reported by Daniel Herring)
1611 * bug fix: return values of READ-SEQUENCE did not take :START into
1612 account on file streams, regressions since 1.0.12.22. (reported by
1613 Thomas Russ, patch by Paul Khuong)
1614 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1615 method specializer used to confuse permuation vector optimization.
1616 * bug fix: system inserted bogus implicit type declarations for local
1617 special variables in DEFMETHOD bodies.
1618 * bug fix: #354; duplicated frames in backtraces due to
1619 non-tail-call-optimized XEPs to functions with return type NIL
1621 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1622 initializes structure object slots according to DEFSTRUCT initforms,
1623 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1624 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1625 (reported by Bruno Haible and Stephen Wilson)
1626 * bug fix: #395; fill-pointer output streams used now support
1627 element-type BASE-CHAR as well.
1628 * bug fix: compiler error when attempting to derive return value of
1629 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1631 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1633 * bug fix: Mac OS X binaries should now be portable between Leopard
1636 changes in sbcl-1.0.23 relative to 1.0.22:
1637 * enhancement: when disassembling method functions, disassembly
1638 for the associated fast function is also produced.
1639 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1641 * optimization: printing with *PRINT-PRETTY* true is now more
1642 efficient as long as the object being printed doesn't require
1643 special handling by the pretty printer.
1644 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1645 now interact correctly with type declarations.
1646 * partial bug fix: PCL detects infinite recursion during wrapper
1647 validation. (thanks to Attila Lendvai)
1648 * bug fix: #426; nested function calls are inlined properly.
1649 Previously if FOO was an inline function, in calls of the form
1650 (FOO (FOO ...)) the outer call was not inlined.
1651 * bug fix: long long arguments passed in registers to alien
1652 functions on PowerPC Linux and NetBSD are now handled correctly
1653 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1655 changes in sbcl-1.0.22 relative to 1.0.21:
1656 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1657 for the shared object in the current directory, but passes the native
1658 namestring of the designated pathname to the operation system's shared
1659 object loading function as-it.
1660 * minor incompatible change: --disable-debugger toplevel option now takes
1661 effect before processing of initialization files and --eval or --load
1663 * new feature: new commandline argument: --script, which supports
1664 shebang lines. See documentation for details. (based on work by
1666 * new feature: SAVE-LISP-AND-DIE can save current values of
1667 --dynamic-space-size and --control-stack-size in the executable core,
1668 causing it to skip normal runtime option processing. See documentation
1669 for details. (thanks to Zach Beane)
1670 * enhancement: inoccous calls to EVAL or generic functions dispatching
1671 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1672 * enhancement: the system no longer resignals errors from --load and
1673 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1674 associated with the original error to be lost. (thanks to Ariel
1676 * enhancement: :DONT-SAVE keyword argument has been added to
1677 LOAD-SHARED-OBJECT for controlling interaction with
1678 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1679 the effects of an earlier LOAD-SHARED-OBJECT call.
1680 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1681 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1682 provided. (reported by Cedric St-Jean)
1683 * bug fix: circularity handling in the reader did not treat raw
1684 structure slots correctly. (reported by Cedric St-Jean)
1685 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1686 file descriptors when there were none.
1687 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1688 was broken. (reporteed by Willem Broekema)
1689 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1690 pathnames without a directory.
1691 * bug fix: COMPILE-FILE did not warn about undefined variable
1692 references at toplevel, and LOAD of the resulting fasl did
1693 not signal an error.
1694 * bug fix: functions with non-required arguments used to end up with
1695 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1696 * bug fix: redefining a function with non-required arguments didn't
1697 update the system's knowledge about its call signature properly.
1698 * bug fix: fixed #431; incompatible alien record type redefinitions
1699 are detected and handled. (reported by Neil Haven)
1700 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1701 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1703 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1704 after alien stack frames.
1705 * bug fix: strings passed to mk{s,d}temp lacked null termination
1707 changes in sbcl-1.0.21 relative to 1.0.20:
1708 * new feature: the compiler is able to track the effective type of a
1709 generic function across method addition and removal.
1710 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1711 appropriately typed structure slots without locking.
1712 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1713 information like those gathered by TIME using a programming-friendly
1715 * new feature: TIME reports time taken even if the form performs a
1716 non-local transfer of control.
1717 * enhancement: reduced conservativism on GENCGC platforms: on
1718 average 45% less pages pinned (measured from SBCL self build).
1719 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1720 mutate constant symbols or violate declaimed type of the symbol.
1721 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1722 sleeping on the semaphore in heavily contested semaphores.
1723 * bug fix: semaphores and condition variables were not interrupt
1725 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1726 owned by other threads anymore.
1727 * bug fix: FIND on lists called KEY outside the specified
1728 subsequence. (reported by budden)
1729 * bug fix: LOG doesn't use single-float intermediate results when
1730 given mixed integer and double-float arguments, leading to better
1731 precision. (reported by Bob Felts)
1732 * bug fix: LOG with base zero returned values of inconsistent type.
1734 changes in sbcl-1.0.20 relative to 1.0.19:
1735 * minor incompatible change: OPTIMIZE qualities
1736 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1737 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1738 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1739 * documentation: some slot access efficiency guidelines have been
1740 added to the user manual.
1741 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1742 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1743 as ASSOC and MEMEBER.
1744 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1745 to more efficient EQ-comparison versions more often.
1746 * optimization: enhanced derivation of DOLIST iteration variable type
1748 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1750 * optimization: runtime lookup of function definitions can be
1751 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1752 * optimization: compiler is able to derive the return type of
1753 (AREF (THE STRING X) Y) as being CHARACTER.
1754 * optimization: CLRHASH on empty hash-tables no longer does pointless
1755 work. (thanks to Alec Berryman)
1756 * optimization: REPLACE deftransforms don't punt when :START1 or
1758 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1759 no longer emits a code deletion note. (reported by Andrew
1761 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1762 functions with an odd number of &OPTIONAL arguments, a &REST
1763 argument, and one or more &KEY arguments at the call site.
1764 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1765 arguments appeared at call sites as well.
1766 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1767 READ-LINE &co can no longer read from them afterwards. (reported
1769 * bug fix: fixed #427: unused local aliens no longer cause compiler
1770 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1772 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1773 alien-stack leakage. (reported by Andy Hefner)
1774 * bug fix: PROGV signals an error when an attempt to violate declared
1775 type of a variable or bind a constant is made.
1776 * bug fix: SET signals an error when an attempt to violate declared
1777 type of a variable is made.
1778 * bug fix: restart computation during the execution of a restart
1779 test function no longer causes infinite recursion. (reported by
1781 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1782 signals an error. (thanks to Pierre Mai)
1783 * bug fix: EXPORT left symbol unexported in conflict situations.
1784 (thanks to Michael Weber)
1785 * bug fix: correctly handle name conflicts involving CL:NIL.
1786 (thanks to Michael Weber)
1787 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1788 conflicts arising from USEing package with conflicting symbols
1789 correctly. (thanks to Michael Weber)
1791 changes in sbcl-1.0.19 relative to 1.0.18:
1792 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1793 warnings that go otherwise unhandled will be muffled if they are
1794 of the type that's the value of this variable.
1795 * optimization: stack allocation is slightly more efficient on x86
1797 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1798 where a raw slot always is initialized using the initform whose
1799 type is not know sufficiently well a compile-time are now compiled
1800 correctly. (reported by John Morrison)
1801 * bug fix: compiler no longer makes erronous assumptions in the
1802 presence of non-foldable SATISFIES types.
1803 * bug fix: stack analysis missed cleanups of dynamic-extent
1804 arguments in non-let-converted calls to local functions.
1805 * improvements to the Windows port:
1806 ** adjusted address spaces for building on both Win32 and
1807 Win64. (thanks for John Connors)
1808 * fixed some bugs revealed by Paul Dietz' test suite:
1809 ** interval arithmetic during type derivation used inexact integer
1810 to single-float coercions.
1811 ** arithmetic operations involving large integers and single
1812 floats give the same results in compiled and interpreted code.
1813 ** deriving the result type of COERCE no longer signals an error
1814 if the derived type of the second argument is a MEMBER type
1815 containing invalid type specifiers.
1816 ** ADJOIN with constant NIL as second argument works correctly.
1817 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1819 changes in sbcl-1.0.18 relative to 1.0.17:
1820 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1821 profiles only the current thread.
1822 * minor incompatible change: changes to SYMBOL-VALUE of constants
1823 defined with DEFCONSTANT now signal an error.
1824 * enhancement: SB-SPROF now has support for wallclock profiling,
1825 and is also able to profile specific threads. REPORT output
1826 has also additional sorting options.
1827 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1829 * optimization: structure allocation has been improved
1830 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1831 ** out of line constructors are ~10% faster.
1832 ** inline constructors are ~15% faster.
1833 ** inline constructors are capable of dynamic extent allocation
1834 (generally on x86 and x86-64, in some cases on other platforms
1836 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1838 * optimization: file compiler is now able to coalesce non-circular
1839 lists, non-base strings, and bit-vectors. Additionally, constants
1840 are never referenced through SYMBOL-VALUE at runtime.
1841 * optimization: code defining methods on PRINT-OBJECT (and other
1842 generic functions in the COMMON-LISP package) now loads faster.
1843 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1845 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1846 fasl is now deleted. (reported by Attila Lendvai)
1847 * bug fix: READ-LINE always returned NIL for the last line in files.
1848 (reported by Yoshinori Tahara)
1849 * bug fix: more accurate disassembly annotations of foreign function
1850 calls. (thanks to Andy Hefner)
1851 * bug fix: trimming non-simple strings and non-string string
1852 designators when the there is nothing to trim works properly.
1853 (thanks to James Knight)
1854 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1855 (thanks to Travis Cross)
1856 * fixed some bugs revealed by Paul Dietz' test suite:
1857 ** NIL is a valid function name (regression at 1.0.13.38)
1858 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1859 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1860 fill pointers properly (regression at 1.0.12.23)
1861 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1862 displacement indices properly (regression at 1.0.12.23)
1864 changes in sbcl-1.0.17 relative to 1.0.16:
1865 * temporary regression: user code can no longer allocate closure
1866 variable storage on stack, due to bug 419 without explicitly
1867 requesting it. Please consult sbcl-devel for advice if you need to
1868 use this feature in the meanwhile.
1869 * new feature: runtime argument --control-stack-size can be used to
1870 adjust thread default control stack size.
1871 * enhancement: improved TIME output
1872 ** all times are reported using the measured accuracy (milliseconds
1873 for real and GC times, microseconds for everything else.)
1874 ** processor cycle counts on x86 and x86-64.
1875 ** interpreted forms are counted for both evaluator modes.
1876 ** number of lambdas converted by the compiler is reported.
1877 ** CPU percentage report (computed from real and total run time.)
1878 ** more comprehensive run time reporting, using a condenced format
1879 ** interperted form, lambda, and page fault counts are omitted
1881 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1883 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1884 * optimization: two argument forms of LAST are upto ~10% faster
1885 in normal SPEED policies.
1886 * optimization: NCONC no longer needs to heap cons its &REST list
1887 in normal SPEED policies.
1888 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1889 to Sidney Markowitz)
1890 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1891 regression since 1.0.9.1. (thanks to Eric Marsden)
1892 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1893 since 1.0.15.36. (thanks to Paul Khuong)
1894 * bug fix: LAST when always returned the whole list when given a bignum
1895 as the second argument.
1896 * bug fix: dynamic extent allocation of nested lists and vectors
1897 could leak to otherwise accessible parts.
1898 * bug fix: invalid optimization of heap-allocated alien variable
1900 * bug fix: fasl header checking is less vulnerable to different
1901 platform word lengths.
1902 * bug fix: more correct assembler syntax for GNU binutils
1903 2.18.50.0.4 support. (thanks to Marijn Schouten)
1904 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1906 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1907 declarations) successfully. (reported by Attila Lendvai)
1909 changes in sbcl-1.0.16 relative to 1.0.15:
1910 * minor incompatible change: revert the changes to sb-posix's error
1911 signaling added in 1.0.14.
1912 * minor incompatible change: change PROBE-FILE back to returning
1913 NIL whenever we can't get a truename, as was the case before 1.0.14.
1914 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1915 inherits from ERROR instead of just CONDITION.
1916 * new feature: SB-INTROSPECT can provide source locations for instances
1917 as well. (thanks to Tobias Rittweiler)
1918 * optimization: binding special variables now generates smaller code
1919 on threaded platforms.
1920 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1921 and cases where no :TEST is given but the compiler can infer that
1922 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1923 * optimization: better LOGNOT on fixnums.
1924 * optimization: modular arithmetic for a particular requested width
1925 is implemented using a tagged representation unless a better
1926 representation is available.
1927 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1928 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1929 for wellformedness and returns a specialized vector. (reported by
1930 Francois-Rene Rideau)
1931 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1932 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1933 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1934 unscheduling timer at the same time as another timer fires.
1935 * bug fix: don't reschedule timers for dead threads.
1936 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1937 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1938 bogus errors if select() was interrupted.
1939 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1941 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1942 * enhancement: cleaner backtraces for interactive interrupts, as
1943 well as other cases where the interesting frames used to be
1944 obscured by interrupt handling frames.
1945 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1946 now supported, and tracing a whole package using (TRACE "FOO") now
1947 traces SETF-functions as well.
1948 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1949 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1950 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1951 * unreadably printed representation of hash-tables now includes
1953 * bug fix: partially fixed #188: type propagation from assignments
1954 is now more efficient.
1955 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1956 'DOUBLE-FLOAT) are not flushable.
1957 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1958 full address of the object, and none of the tag bits.
1959 * bug fix: readably printing hash-tables now respects other printer
1960 control variables. (reported by Cedric St-Jean)
1961 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1962 keyword with MAKE-HASH-TABLE.
1963 * bug fix: export SB-POSIX:MKSTEMP.
1964 * bug fix: SORT was not interrupt safe.
1965 * bug fix: XREF accounts for the last node of each basic-block as
1967 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1968 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1969 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1970 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1971 create obsolete instances in the case of redefinition or
1972 obsoletion of a superclass. (thanks to Andy Hefner)
1973 * bug fix: Support for the Alpha architecture has been revived; it had
1974 suffered somewhat from lack of maintenance since sbcl-1.0.
1975 * improvements to the Windows port:
1976 ** The system detects the codepage to use at startup, instead of
1977 using the value from the saved core. (thanks to Kei Suzuki)
1979 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1980 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1981 (see documentation for details.)
1982 * revived support for OpenBSD (contributed by Josh Elsasser)
1983 * partially fixed bug #108: ROOM no longer suffers from occasional
1984 (AVER (SAP= CURRENT END)) failures.
1985 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1986 bodies no longer cause a WARNING to be signalled. (reported by
1988 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1989 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1990 the bug in TRUNCATE.) (reported by Michael Weber)
1991 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1992 no samples. (reported by Andy Hefner)
1993 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1994 no longer appear as (NIL ...) frames in backtraces.
1995 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1996 is now actually exported from SB-EXT as documented. (reported by
1998 * bug fix: sb-aclrepl now correctly understands how to inspect
1999 single-floats on 64-bit platforms where single-floats are not boxed.
2000 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2001 yet been finalized. (reported by Levente Meszaros)
2002 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2003 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2004 SBCL-specific optimize qualities.
2006 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2007 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2008 an executable in the search path, and does so in the child
2009 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2010 been removed; it can be found in the CVS history, for somebody who
2011 needs that search behavior (see the manual).
2012 * minor incompatible change: compiler policy re. weakening type
2013 checks has changed: now type checks are weakened only if SAFETY < 2
2015 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2016 unparsing of directory pathnames as files. Analogously,
2017 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2018 filename to parse into a directory pathname.
2019 * enhancement: implicit generic function creation now signals a
2020 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2021 users can bind handlers for and muffle around calls to LOAD.
2022 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2023 to be used (using the default stream external format), and allows
2024 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2025 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2026 strings and vectors whose element-type or simplicity is not fully
2027 known at compile-time.
2028 * optimization: STRING-TRIM and related functions no longer allocate
2029 a new string when no trimming needs to be performed. These functions
2030 are also faster than before when the input string has been declared
2032 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2033 * optimization: READ-LINE is significantly faster for files containing
2035 * optimization: non-open coded uses of character comparison operators
2036 (e.g. char=) no longer cons when called with more than one parameter
2037 on platforms supporting dynamic-extent allocation.
2038 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2039 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2040 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2042 * bug fix: some sequence functions elided bounds checking when
2044 * bug fix: too liberal weakening of union-type checks when SPEED >
2046 * bug fix: more bogus fixnum declarations in ROOM implementation
2049 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2050 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2051 :SYNCHRONIZED argument, which makes the hash-table safe for
2052 concurrent accesses (but not iteration.) See also:
2053 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2054 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2055 * optimization: CONCATENATE on strings is an order of magnitude faster
2056 in code compiled with (> SPEED SPACE).
2057 * optimization: SUBSEQ is ~50% faster on lists.
2058 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2059 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2060 END is smaller then START.
2061 * bug fix: SB-PROFILE will no longer report extra consing for nested
2062 calls to profiled functions.
2063 * bug fix: ROOM implementation had bogus fixnum declarations which
2064 could cause type-errors when calling ROOM on large images.
2065 * bug fix: if file compilation is aborted, the partial fasl is now
2066 deleted, and COMPILE-FILE returns NIL as the primary value.
2067 * bug fix: number of thread safety issues relating to SBCL's internal
2068 hash-table usage have been fixed.
2069 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2070 be returned from its body when the values were being returned
2071 using unknown-values return convection and the W-P-O was wrapped
2072 inside an UNWIND-PROTECT.
2073 * bug fix: sb-posix should now compile again under Windows, enabling
2074 slime to work again.
2076 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2077 * incompatible change: hash-table accessor functions are no longer
2078 automatically protected by locks. Concurrent accesses on the same hash-table
2079 from multiple threads can give inconsistent results or even corrupt the
2080 hash-table completely. Multi-threaded applications should do their own
2081 locking at the correct granularity. In the current implementation it is
2082 still safe to have multiple readers access the same table, but it's not
2083 guaranteed that this property will be maintained in future releases.
2084 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2085 and will signal an error at runtime.
2086 * enhancement: SB-THREAD package now exports a semaphore interface.
2087 * enhancement: CONS can now stack-allocate on x86 and
2088 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2090 * enhancement: nested lists can now be stack allocated on
2091 platforms providing stack allocation support.
2092 * enhancement: dynamic-extent support has been extended to support
2093 cases where there are multiple possible sources for the stack
2095 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2096 if the mutex is uncontested on Linux.
2097 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2098 as specified by the CLHS. (thanks to Tobias Rittweiler)
2099 * bug fix: NaN comparison now works on x86-64.
2100 * bug fix: CLOSE :ABORT T on a stream with pending output now
2102 * bug fix: instances of non-standard metaclasses using standard
2103 instance structure protocol sometimes missed the slot type checks
2105 * bug fix: known functions can be inlined in high-debug code.
2107 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2108 * minor incompatible change: the MSI installer on Windows no longer
2109 associates .lisp and .fasl files with the installed SBCL.
2110 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2111 on Windows. (thanks to Luis Oliviera)
2112 * new feature: SB-CLTL2 contrib module now implements
2113 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2114 * optimization: scavenging weak pointers is now more efficient,
2115 requiring O(1) instead of O(N) per weak pointer to identify
2116 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2117 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2118 method bodies using constant slot-names when the first argument is
2119 a specializer parameter for the method.
2120 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2121 names, when the class of the instance is a direct instance
2122 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2123 as slow as the constant slot-name case.)
2124 * optimization: member type construction is now O(N) instead
2126 * optimization: UNION and NUNION are now O(N+M) for large
2127 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2129 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2130 now more readable in environments like Slime which display it.
2131 (thanks to Tobias C. Rittweiler)
2132 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2133 was able to infer the correct argument type for the object on which
2134 the CAS operation was being performed.
2135 * bug fix: copy propagation interfered with parallel assignment
2136 semantics in local calls. (reported by Paul Khuong)
2137 * bug fix: the signed modular fixnum shift compiled to wrong code on
2138 x86 and x86-64. (spotted by a slight modification to some of
2141 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2142 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2143 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2144 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2146 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2147 and generic function now print the object identity for anonymous
2148 instances. (thanks to Attila Lendvai)
2149 * enhancement: as an extension to MOP, SBCL now supports SETF of
2150 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2151 (thanks to Attila Lendvai)
2152 * enhancement: sb-cover has an alternate annotation mode which puts
2153 the form annotations at the car of the form, instead of annotating
2154 it completely. The benefit of this mode is that it shows better
2155 which forms were instrumented by the compiler.
2156 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2157 by printer control variables. (reported by Dan Corkill)
2158 * bug fix: system leaked memory when delayed output was performed by
2159 the OS in smaller chunks then expected. (thanks to David Smith)
2160 * bug fix: system leaked memory when file streams were not closed
2162 * bug fix: large objects written to slow streams that were modified
2163 after the write could end up with the modified state written to
2164 the underlying file descriptor.
2165 * bug fix: multiple threads operating in parallel on the same stream
2166 could cause buffer-overflows.
2167 * bug fix: source location information is stored correctly
2168 (broken since 1.0.6). This bug would generally show up as the
2169 Slime debugger highlighting the wrong form when the sldb-show-source
2171 * bug fix: Branch forms are again annotated as branches in the sb-cover
2173 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2174 on x86-64. (reported by Gregory Vanuxem)
2175 * bug fix: EQUALP could return wrong results for structures with raw
2176 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2177 word). (reported by Vjacheslav Fyodorov)
2178 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2181 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2182 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2183 atomic compare-and-swap operations on threaded platforms.
2184 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2185 allows assigning a global minimum value to optimization qualities
2186 (overriding proclamations and declarations).
2187 * enhancement: closed over variables can be stack-allocated on x86
2189 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2191 * optimization: slot definition lookup is now O(1). This speeds up
2192 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2193 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2194 * optimization: ASSOC and MEMBER can now be open-coded for all
2195 combinations of keyword arguments when second argument is constant
2196 and SPEED >= SPACE. In other cases a specialized version is
2198 * bug fix: using obsoleted structure instances with TYPEP and
2199 generic functions now signals a sensible error.
2200 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2201 (reported by Kristoffer Kvello)
2202 * bug fix: backtrace construction is now more careful when making
2203 lisp-objects from pointers on the stack, to avoid creating bogus
2204 objects that can be seen by the GC.
2205 * bug fix: defaulting of values in contexts expecting more than 7
2206 variables now works on x86-64. (reported by Christopher Laux)
2207 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2209 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2210 as the property-list of a symbol.
2211 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2212 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2213 situations requested, are once again file-compileable. (reported
2216 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2217 * MOP improvement: support for user-defined subclasses of
2218 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2219 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2220 the expansion of DEFMETHOD, is responsible for generating a form
2221 which creates a list of specializers when evaluated. Additional
2222 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2223 debugging and introspective support.
2224 * minor incompatible change: the (unsupported) spinlock interface
2225 has changed: free spinlock now has the value NIL, and a held spinlock
2226 has the owning thread as its value.
2227 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2228 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2230 * enhancement: name of a socket-stream is now "a socket" instead of
2231 "a constant string".
2232 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2233 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2234 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2235 for generic functions. (Thanks to Tobias C. Rittweiler)
2236 * optimization: bignum printing speed has been improved by 20-40%
2237 (depending on the bignum size.)
2238 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2240 * bug fix: the cache used by the CLOS to store precomputed effective
2241 methods, slot offsets, and constant return values is now thread and
2243 * bug fix: generic function dispatch function updating is now thread
2244 and interrupt safe (in the sense that the known issues have been
2246 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2247 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2248 * bug fix: asdf systems with dependencies to the SB-POSIX or
2249 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2250 * bug fix: interrupt safety of applicable method computation has been
2253 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2254 * new contrib: sb-cover, an experimental code coverage tool, is included
2255 as a contrib module.
2256 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2257 significantly faster.
2258 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2259 produce more efficient code on x86-64 if the compiler can determine
2260 that (+ INDEX <constant>) does not require a bounds check and FOO
2261 has an element type at least 8 bits wide.
2262 * enhancement: a new, experimental synchronous timeout facility is
2263 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2264 * enhancement: when a symbol name conflict error arises, the
2265 conflicting symbols are always printed with a package prefix.
2266 (thanks to Kevin Reid)
2267 * enhancement: stepping is now once again supported on the SPARC and
2268 MIPS platforms. (It is also now more likely to work on CheneyGC
2270 * enhancement: sb-sprof can now also track and report accurate call
2272 * bug fixes: the treatment of non-standard subclasses of
2273 SB-MOP:SPECIALIZER is more correct.
2274 * incompatible change: PURIFY no longer copies the data from the
2275 dynamic space into the static and read-only spaces on platforms
2276 that use the generational garbage collector
2277 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2279 * bug fix: GC race condition occasionally resulting in crashes with
2280 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2282 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2284 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2285 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2286 * bug fix: an asynchronous interrupt could previously leave the
2287 system running with GC inhibited.
2288 * bug fix: a DECLARE form evaluated at top-level now causes an error
2289 rather than silently (or verbosely) returning NIL.
2290 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2291 result in a error being signalled due to source form lookup errors.
2292 (reported by Peter Graves)
2294 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2295 * incompatible change: removed writer methods for host-ent-name,
2296 host-ent-addresses -- changing the values did not update the DNS
2298 * minor incompatible change: changed experimental JOIN-THREAD interface
2299 * documentation: the manual now lists reader and writer methods
2300 in class slot documentation sections. (thanks to Richard M Kreuter)
2301 * documentation: unwinding from asyncronous events has been
2302 documented as unsafe.
2303 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2304 in multithreaded application code.
2305 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2306 platforms. (thanks to James Anderson for the optimization hint)
2307 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2309 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2310 variants no longer cons.
2311 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2312 their NOT- variants no longer cons.
2313 * optimization: EQUAL hash tables no longer use SXHASH for objects
2314 of all data types, but instead use an EQL hash for types for which
2315 EQUAL is the same as EQL.
2316 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2317 are significantly faster.
2318 * optimization: new STRING-OUTPUT-STREAM implementation is much
2319 faster for large outputs and conses 30% less on average.
2320 * enhancement: XREF information is now collected for references made
2321 to global variables using SYMBOL-VALUE and a constant argument.
2322 * enhancement: SIGINT now causes a specific condition
2323 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2324 * bug fix: FILE-POSITION used to signal an error in some cases where
2325 ANSI requires it to return NIL.
2326 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2327 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2328 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2330 * bug fix: bad type declaration in the CLOS implementation has
2331 been fixed. (reported by James Anderson)
2332 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2333 (thanks to Lutz Euler)
2334 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2335 required by the CLHS. (reported by Samium Gromoff)
2336 * bug fix: dead unbound variable references now signal an error.
2337 (reported by Marco Monteiro)
2338 * bug fix: / with an unused value was being deleted in safe code.
2339 (thanks to Marco Monteiro and Kevin Reid)
2340 * bug fix: number of characters that can be written onto a single
2341 line in a file is unlimited.
2342 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2343 been fixed by inhibiting interrupts for when GC is disabled.
2344 * bug fix: some interrupt safety issues with GETHASH, (SETF
2345 GETHASH), CLRHASH and REMHASH have been fixed.
2346 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2347 specifier no longer causes infinite recursion.
2348 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2349 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2350 * bug fix: an &environment argument with the correct variable information
2351 is passed to macros that are expanded during byte compilation.
2352 (reported by Samium Gromoff)
2353 * bug fix: a logic error was causing the hash function for bignums to
2354 have excessive amounts of collisions. (reported by Faré Rideau)
2355 * bug fix: modifying the contents of an array could change the return
2356 value of SXHASH on that array, which is only allowed for strings
2357 and bit vectors. (bug introduced in 0.9.16)
2358 * improvement: the x86-64/darwin port now passes all tests (except
2359 for the debugger tests) but should still be considered
2360 experimental until this is fixed.
2361 * improvement: a style-warning is signaled for CASE (etc) clauses with
2362 duplicate keys. (thanks to Kevin Reid)
2363 * improvement: macos/x86 and macos/x86-64 now use mach exception
2364 handlers for dealing with illegal instructions (for trapping and
2365 error handling) and memory protection violations (for GC).
2367 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2368 * new platform: experimental support for x86-64/darwin (MacOS).
2369 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2370 and getnameinfo sockets functions are used instead of gethostbyaddr
2371 and gethostbyname, on platforms where the newer functions are available.
2372 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2374 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2375 don't print the startup banner, but behave as if --noinform was passed
2376 as a command line argument. (thanks to Kevin Reid)
2377 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2378 * optimization: code using alien values with undeclared types is much faster.
2379 * optimization: the compiler is now able to open code SEARCH in more cases.
2380 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2381 * bug fix: using standardized COMMON-LISP special variables as loop
2382 variables no longer signals bogus package lock violations. (reported
2384 * bug fix: declaring local loop variables to be of a range-limited type
2385 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2386 (reported by Andras Simon)
2387 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2388 bugs remain on x86-64.)
2389 * bug fix: the #= and ## reader macros now interact reasonably with
2390 funcallable instances.
2391 * bug fix: type-checks for function arguments were compiled using the
2392 compiler policy settings of the wrong lexical environment (in 1.0.2
2394 * bug fix: SHADOW accepts characters as string designators, as required
2395 by the spec (thanks to Eric Marsden)
2396 * bug fix: fixed GC safety issues when foreign functions are called with
2397 non-base strings as arguments
2398 * bug fix: more consistent error output for fatal-compiler-warnings, like
2400 * bug fix: functions with proper names were showing up as NIL in
2401 backtraces (reported by Edi Weitz, regression in 1.0.2)
2403 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2404 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2405 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2406 produce more efficient code on the x86 if the compiler can determine
2407 that (+ INDEX <constant>) does not require a bounds check and FOO
2408 has an element type at least 8 bits wide.
2409 * bug fix: references to undefined variables are handled the same way
2410 in toplevel forms as in the normal compiler
2411 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2413 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2414 (thanks to Jon Buller)
2415 * improvement: faster compilation times for complex functions
2416 * improvement: added readlink support to SB-POSIX (thanks to Richard
2419 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2420 * improvement: experimental support for mach exception handling on
2421 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2423 * improvement: support for GBK external format.
2424 (thanks to Chun Tian (binghe))
2425 * improvement: the debugger now displays variables that have been closed
2426 over, in code compiled with (DEBUG 2) or higher
2427 * improvement: support for executable cores on NetBSD (thanks to
2429 * new feature: added a RESTART-FRAME debugger command
2430 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2431 be used to provide an implementation for FILE-POSITION on Gray streams
2432 (thanks to Eric Marsden)
2433 * new feature: add syslog, openlog and closelog support to SB-POSIX
2434 (thanks to Richard Kreuter)
2435 * optimization: the function call overhead in code compiled with
2436 a high DEBUG optimization setting is significantly
2437 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2438 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2439 (thanks to Tony Martinez)
2440 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2441 evaluated once (reported by Kevin Reid)
2442 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2443 works again (thanks to Kilian Sprotte)
2444 * bug fix: an error is signaled for tagbodies with duplicate tags
2445 (thanks to Stephen Wilson)
2446 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2447 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2448 stack frames from alien callbacks.
2449 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2450 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2451 65k pages (thanks to David Woodhouse)
2452 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2454 changes in sbcl-1.0.1 relative to sbcl-1.0:
2455 * new platform: FreeBSD/x86-64, including support for threading.
2456 * new feature: the compiler stores cross-referencing information
2457 about function calls (who-calls), macroexpansion (who-macroexpands)
2458 and special variables (who-binds, who-sets, who-references) for code
2459 compiled with (< SPACE 3). This information is available through the
2460 sb-introspect contrib.
2461 * new feature: users may subclass SEQUENCE, and have instances of
2462 these classes interoperate with standard Common Lisp functions if
2463 a number of methods are defined. (This feature is experimental
2464 and the interface subject to change based on feedback from SBCL
2465 users and the general community)
2466 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2467 x86/x86-64, rather than the previous fixed depth of 8
2468 * improvement: another pthread back-end of mutex "pthread-futex".
2469 * bug fix: non-ascii command-line arguments are processed correctly
2470 (thanks to Yaroslav Kavenchuk)
2471 * bug fix: non-required arguments were not passed correctly when a method
2472 defined using DEFMETHOD was called from a mop-generated method using
2473 CALL-NEXT-METHOD (reported by Pascal Costanza)
2474 * bug fix: recursion is now permitted in accessors through
2475 SLOT-UNBOUND. (reported by Pascal Costanza)
2476 * bug fix: an error was signaled at startup if the HOME environment
2477 variable was defined, but had an empty value (reported by Peter Van Eynde)
2478 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2479 signal a PROGRAM-ERROR, not a BUG.
2480 * bug fix: SB-POSIX:READDIR works when built with large file support.
2481 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2483 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2484 for better automatic indentation support. (thanks to Matt Pillsbury)
2485 * optimization: loading generic functions no longer takes O(n^2) time,
2486 proportional to the amount of methods in the generic function
2487 (reported by Todd Sabin and Jeremy Brown)
2488 * optimization: the FIND and POSITION family of sequence functions
2489 are significantly faster on arrays whose element types have been
2491 * improvements to the Windows port:
2492 ** Intermittent heap corruption problems have been fixed. (thanks
2493 to Alastair Bridgewater)
2494 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2496 ** Lisp is able to unwind foreign exception frames from alien
2497 callbacks. (thanks to Alastair Bridgewater)
2499 changes in sbcl-1.0 relative to sbcl-0.9.18:
2500 * improvement: experimental support for threading on FreeBSD/x86.
2501 (thanks to NIIMI Satoshi)
2502 * improvement: runtime option --dynamic-space-size can be used
2503 to set the size of the dynamic space reserved on startup.
2504 * improvement: floating point modes in effect are now saved in
2505 core, and restored on startup.
2506 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2507 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2508 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2509 threads are not running after *SAVE-HOOKS* have run.
2510 * improvement: writes to CLOS instance slots are type-checked in code
2511 compiled with (SAFETY 3)
2512 * improvement: floating-point exception handling on FreeBSD (thanks to
2514 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2515 (thanks to Zach Beane)
2516 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2518 * improvement: added support for the Shift-JIS external format.
2519 (contributed by NIIMI Satoshi)
2520 * improvement: callbacks are supported on Linux/PPC. (thanks to
2522 * bug fix: compiler bug triggered by a (non-standard) VALUES
2523 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2524 * bug fix: file compiler no longer confuses validated and already
2525 dumped structurres. (reported by Kaersten Poeck)
2526 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2527 fill-pointer signals a type-error as required. (thanks to
2529 * bug fix: disassemly of funcallable instances works.
2530 * bug fix: single stepping on PPC.
2531 * bug fix: fix thread-safety problems in the type system (generally
2532 manifesting as nonsensical errors like "STRING is a bad type specifier
2533 for sequences" or "The value 1 is not of type FIXNUM")
2534 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2535 (reported by Josip Gracin)
2536 * bug fix: an error is signaled for attempts to displace arrays with
2537 incompatible element types (thanks to Mario Mommer)
2538 * bug fix: more correct handling of wide characters in debug info
2539 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2540 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2541 and don't cause extra consing
2542 * optimization: MAP and MAP-INTO are significantly faster on vectors
2543 whose elements types have been declared.
2544 * Improvements to SB-SPROF:
2545 ** Support for allocation profiling
2546 ** Reduced profiling overhead, especially for long profiling runs
2547 * Improvements to the Windows port:
2548 ** floating point exceptions are now reported correctly.
2549 ** stack exhaustion detection works partially.
2550 ** more accurate GET-INTERNAL-REAL-TIME.
2551 ** better RUN-PROGRAM behaviour in case of errors in the child
2553 ** PROBE-FILE now simplifies pathnames correctly.
2554 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2555 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2556 1st 1970 (although time timezone data will be unreliable).
2557 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2559 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2560 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2561 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2563 * bug fix: two potential GC deadlocks affecting threaded builds.
2564 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2565 returns T (reported by Anton Kazennikov)
2566 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2567 with non-variable places
2568 * bug fix: remove a race condition in the setting of
2569 funcallable-instance functions, this should make threaded CLOS
2570 code more stable against memory faults.
2571 * bug fix: corruption of specials when unbinding is interrupted by an
2572 asynchronous unwind (reported by Hannu Koivisto)
2573 * improvement: the debugger will now also display local variables that
2574 are only used once, for code compiled with a DEBUG optimization quality
2577 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2578 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2579 * incompatible change: External-format support for FFI calls. The
2580 SB-ALIEN:C-STRING no longer implies an ASCII
2581 external-format. Instead the string is subject to external-format
2582 conversion. Additionally return values of type SB-ALIEN:C-STRING
2583 are by default of type (SIMPLE-ARRAY CHARACTER), not
2584 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2585 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2586 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2587 * incompatible change: SB-EXT package no longer contains the
2588 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2589 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2591 * incompatible change: the single-stepper is no longer available
2592 on Alpha, Mips and Sparc platforms.
2593 * minor incompatible change: the direct superclasses of
2594 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2595 not (STANDARD-OBJECT FUNCTION). This makes the
2596 class-precedence-lists of GENERIC-FUNCTION and
2597 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2599 * minor incompatible change: the default stream external format on
2600 non-unicode SBCL is no longer detected from the locale, but is always
2602 * new feature: Add a version of evaluator that uses an interpreter instead
2603 of the compiler. EVAL still uses the compiler by default, to switch it
2604 to use the interpreter, set the value of the variable
2605 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2606 * minor incompatible change: the single-stepper REPL has been merged
2607 with the normal debugger (see the "Stepping" heading of the debugger help
2608 for more details). The debugger command STEP will no longer switch
2609 to the single-stepper REPL.
2610 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2611 for a type now works.
2612 * bug fix: loading of default sysinit file works. (thanks to Leonid
2614 * bug fix: better detection of circularities in the file-compiler.
2615 (reported by Marco Monteiro)
2616 * bug fix: the CL pathname functions now work with files that have
2617 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2618 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2619 systems with Unix98 pty semantics.
2620 * bug fix: ASDF-INSTALL will now work with bsd tar.
2621 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2623 * bug fix: timers expiring in dead threads no longer cause a
2624 type-error (reported by Paul "Nonny Mouse").
2625 * bug fix: thanks to more lightweight single-stepper instrumentation,
2626 code compiled with (DEBUG 3) will compile and execute significantly faster,
2627 and will have more accurate type-inferencing than before
2628 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2629 whose bindings are modified
2630 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2631 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2632 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2633 CL:SOFTWARE-VERSION with proper version
2635 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2636 * feature: implemented the READER-METHOD-CLASS and
2637 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2638 as specified by AMOP.
2639 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2641 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2642 (thanks to Lutz Euler)
2643 * optimization: hashing of general arrays and vectors has been
2644 improved. (reported by Any Fingerhut)
2645 * enhancement: SB-INTROSPECT is now able to find definitions of
2646 profiled functions. (thanks to Troels Henriksen)
2647 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2648 as well, allowing compiler-macros for SETF-functions to expand.
2649 * enhancement: step-instrumentation no longer wraps known
2650 single-value functions with multiple-value context, allowing
2651 better type inference.
2652 * fixed bug #337: use of MAKE-METHOD in method combination now works
2653 even in the presence of user-defined method classes. (reported by
2654 Bruno Haible and Pascal Costanza)
2655 * fixed bug #339(c): if there are applicable methods not part of any
2656 long-form method-combination group, call INVALID-METHOD-ERROR.
2657 (reported by Bruno Haible)
2658 * fixed bug #361: the :FUNCTION initarg in the protocol for
2659 initialization of methods can now be used to override
2660 internally-produced optimized functions. (reported by Bruno
2662 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2663 system-provided lambda expression no longer cause warnings about
2664 unbound #:|pv-table| symbols.
2665 * bug fix: improved the handling of type declarations and the
2666 detection of violations for keyword arguments with non-constant
2668 * bug fix: potentially erronous calls to PATHNAME and
2669 MERGE-PATHNAMES were being flushed in some cases.
2670 (reported by Richard Kreuter)
2671 * bug fix: compiled calls to TYPEP were mishandling obsolete
2672 instances. (reported by James Bielman and Attila Lendvai)
2673 * bug fix: format strings with ~> without matching ~< no longer
2674 trigger an AVER, but signal an understandable error instead.
2675 (reported by Antonio Martinez)
2676 * bug fix: specifying an output-file without a pathname-type for
2677 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2678 of input-file instead of "fasl". (reported by Robert Dodier)
2679 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2680 (reported by James Y Knight).
2681 * bug fix: compiler-macros-function did not consider the environment
2682 argument for shadowing by local functions.
2683 * bug fix: compiler-macros expansion was inhibited by local INLINE
2685 * bug fix: inline expansions of known functions were subject to
2686 step-instrumentation in high debug policies, leading to problems
2687 with type-inference.
2688 * bug fix: compiler failed to differentiate between different CONS
2689 types in some cases.
2690 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2691 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2692 * bug fix: #368: incorrect use of expressed vs. upgraded array
2694 * bug fix: #306a: more precise unions of array types.
2695 * thread-safety improvements:
2696 ** CONDITION-WAIT could return early on Linux, if the thread was
2697 interrupted and subsequently continued with SIGCONT.
2698 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2700 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2701 * added support for the ucs-2 external format. (contributed by Ivan
2703 * minor incompatible change: pretty printing of objects of type
2704 (cons symbol) is, in the default pprint-dispatch-table, now
2705 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2707 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2708 called later in a class's lifetime, possibly as late as when the
2709 first instance of the class is created. Previously,
2710 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2711 class became finalizeable.
2712 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2713 for multibyte external-format streams. (thanks to "vbzoli")
2714 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2715 with :ALLOCATION :CLASS inherited from superclasses of the
2717 * fixed bug: anonymous classes can now be created using the :NAME
2718 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2719 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2720 * fixed bug: core-files saved with :EXECUTABLE T can again be
2721 executed when SBCL_HOME isn't set. (reported by James Knight)
2722 * fixed bug: toplevel LOCALLY forms with declarations could
2723 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2724 * fixed bug: printing from several different threads using different
2725 values of *print-case* could cause invalid output, due to
2726 some internal special variables of the printer not being bound
2727 thread-locally (reported by Max Mikhanosha)
2728 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2729 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2730 (reported by Pascal Costanza)
2731 * fixed bug: FINALIZE-INHERITANCE is called from
2732 REINITIALIZE-INSTANCE on classes when the class has previously
2733 been finalized, as required by AMOP.
2734 * minor code generation optimizations:
2735 ** better register allocation in CLOS dispatching functions
2736 ** overflow detection when coercing signed bytes to fixnums on x86-64
2737 ** is now implemented with one IMUL instruction instead of three shifts
2738 ** more efficient bit-vector access on x86 and x86-64
2739 ** more efficient access to raw structure slots on x86 and x86-64
2740 * fixed some bugs revealed by Paul Dietz' test suite:
2741 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2742 return its argument.
2744 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2745 * feature: thread support on Solaris/x86, and experimental thread support
2747 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2749 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2750 default method for SLOT-UNBOUND.
2751 * minor incompatible change: prevent the user from specializing the
2752 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2753 somewhat counter to the intent of the protocol, I (CSR) think, and
2754 additionally it just doesn't work in SBCL as currently
2755 implemented, thanks to optimizations (that are always valid for
2756 the other three SLOT-VALUEish functions, but not for the setter).
2757 * minor incompatible change: the :SB-LDB feature is now enabled by
2758 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2759 the low-level debugger.
2760 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2761 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2762 down to an SB-SYS:FD-STREAM, allowing direct communication in
2763 more cases. Temporary files and pipes are still used as a fallback
2765 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2766 on the non-reentrant C functions localtime(3) and gmtime(3).
2767 * bug fix: global optimization policy was not visible in LOCALLY and
2769 * bug fix: class objects can be used as specializers in methods.
2770 (reported by Pascal Costanza)
2771 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2772 with a type error. (reported by blitz_ on #lisp)
2773 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2774 failed with a type error. (reported by Pascal Bourguignon)
2775 * bug fix: merging pathnames against defaults with :DIRECTORY
2776 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2777 (reported by James Y Knight)
2778 * bug fix: saving large (>2GB) cores on x86-64 now works
2779 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2780 constant index and a (simple-array (signed-byte 32)) array
2781 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2782 error (patch by Robert J. Macomber)
2783 * feature: TIME now displays the amount of run-time spent in GC
2784 * bug fix: The debugger now does a better job of respecting
2785 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2786 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2787 workaround for bug 403.)
2788 * bug fix: floating point exception handling now works on FreeBSD
2789 (thanks to NIIMI Satoshi)
2790 * fixed some bugs revealed by Paul Dietz' test suite:
2791 ** MISC.641: LET-conversion were not supposed to work in late
2793 * improvements to the Win32/x86 port:
2794 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2795 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2797 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2798 * new feature: source path information is generated for macro-expansion
2799 errors for use in IDE's like Slime (thanks to Helmut Eller)
2800 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2801 * bug fix: compiler does not loop forever on an invalid type in
2803 * improvement: compilation of most CLOS applications is significantly
2805 * optimization: added a limited bytecode compiler for simple toplevel
2806 forms, speeding up compilation and FASL loading
2807 * bug fix: the statistical profiler now properly distinguishes anonymous
2810 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2811 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2812 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2813 into subclasses of the finalized class. Now user calls to
2814 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2815 system return before any subclasses are finalized.
2816 * minor incompatible change: The reader no longer ignores errors
2817 regarding non-existent packages in #+ and #- feature tests.
2818 * new feature: command line options --no-sysinit, --no-userinit to
2819 inhibit loading the corresponding init files
2820 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2821 for sending data through UDP sockets (thanks to François-René Rideau)
2822 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2823 error is signalled instead (thanks to François-René Rideau)
2824 * minor incompatible change: Error signalling behaviour of lexical
2825 operations violating package locks has changed slightly. Refer to
2826 documentation on package locks for details.
2827 * enhancement: EVAL can process IF-expressions without resorting to the
2829 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2830 constant-folded properly due to missing out-of-line functions.
2831 (reported by Mika Pihlajamäki)
2832 * bug fix: LISTEN sometimes returned T even in cases where no data was
2833 immediately available from the stream
2834 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2835 were reversed. (reported by Levente Mészáros)
2836 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2837 when given a vector displaced to an adjustable array. (reported
2839 * bug fix: derivation of float boundaries from numbers outside the
2840 appropriate float range (reported by John Wiseman)
2841 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2843 * bug fix: precomputing cache entries for generic functions with
2844 some subclasses of specializers as yet invalid does not attempt to
2845 fill a cache line with a negative offset. (reported by Levente
2847 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2848 allow condition class objects as arguments to DOCUMENTATION and
2849 (SETF DOCUMENTATION); only find and set documentation for
2850 structure names for the STRUCTURE doc-type. (suggested by Gary
2852 * improvements to the Win32/x86 port:
2853 ** (user-homedir-pathname) and default initialization file
2854 locations now know about the user's "Documents and Settings"
2855 directory (thanks to Yaroslav Kavenchuk)
2856 ** run-program is implemented (thanks to Mike Thomas)
2857 ** sockets support (thanks to Timothy Ritchey)
2858 ** better backtrace support (thanks to Alastair Bridgewater)
2859 ** sb-grovel supported
2860 ** asdf-install and sb-posix work somewhat
2861 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2862 * improvements to the Solaris/x86 port:
2863 ** works on Solaris 11/Solaris Express
2864 ** floating-point exception handling support
2865 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2866 * fixed some bugs revealed by Paul Dietz' test suite:
2867 ** REMOVE-METHOD returns its generic function argument even when
2868 the method is not one of the generic functions' methods.
2869 ** objects declared as MEMBER types can be admissible arguments to
2870 structure accessors.
2871 ** printing characters should simply be printed by the FORMAT ~:C
2873 ** compiler failure when compiling functions with hairy constant
2874 defaults for optional parameters.
2875 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2876 function, which is already optimized.
2878 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2879 * new platform: experimental support for SBCL x86/Darwin, including
2880 MacOS X 10.4.5 on Intel.
2881 * new feature: Unicode character names are now known to the system
2882 (through CHAR-NAME and NAME-CHAR).
2883 * new feature: the filesystem location of SBCL's core file is
2884 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2885 * minor incompatible change: the contrib modules SB-POSIX and
2886 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2887 this change is to make it easier to distribute
2888 location-independent binaries.
2889 * bug fix: as implied by AMOP, standardized classes no longer have
2890 slots named by external symbols of public packages. (reported by
2892 * optimization: calling functions via constant symbols -- as in
2893 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2894 via the function object as in (FUNCALL #'FOO).
2895 * optimization: on x86 and x86-64, the calling convention for the
2896 case of dealing with an unknown number of values has been altered
2897 to be friendlier to the prediction heuristics implemented,
2898 particularly with reference to CALL and RET pairing. (thanks to
2899 Alastair Bridgewater)
2900 * optimization: on x86, the code for access to thread-local symbol
2901 values and binding/unbinding of thread-local symbols is smaller.
2902 (thanks to Alastair Bridgewater)
2903 * enhancement: CONSTANTP is now able to determine constantness of
2904 more complex forms, including calls to constant-foldable standardized
2905 functions and some special forms beyond QUOTE.
2906 * fixed bug: occasional GC crashes on Solaris/x86
2907 * optimization: x86-64 supports stack allocation of results of simple
2908 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2909 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2910 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2911 (thanks to James Knight)
2912 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2913 by the standard (thanks to Stephen Compall)
2915 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2916 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2917 be used for bundling the runtime and the core file into one
2918 executable binary. This feature is not currently supported on all SBCL
2919 platforms. (thanks to James Bielman and NIIMI Satoshi)
2920 * new feature: a generational or ephemeral garbage collector is now
2921 the default on the PowerPC platform (both Linux and Darwin). The
2922 old Cheney (stop and copy) collector is a build-time option.
2923 (thanks to Cyrus Harmon, after Raymond Toy)
2924 * minor incompatible change: the method by which SBCL finds its
2925 contributed modules has changed; it no longer relies on symbolic
2926 links from an $SBCL_HOME/systems directory, but searches directly
2927 in the subdirectories of $SBCL_HOME.
2928 * enhancement: the dynamic heap size on the Linux/PPC platform is
2929 markedly larger, even using the older Cheney garbage collector.
2930 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2931 certain complicated string types. (reported by Gary King)
2932 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2933 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2934 * fixed bug: DOCUMENTATION on structures no longer signals an
2935 error if no structure type of the right name exists. (reported by
2937 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2938 applicable non-standard primary or :AROUND method on
2939 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2940 no longer cause unbound variable errors. (reported by Kevin Reid)
2941 * fixed bug: metacircle resolution in cases where methods have slots
2942 added before the slots from STANDARD-METHOD. (reported by Jean
2944 * fixed bug: the Power PC assembly code for calling into lisp
2945 sometimes computed its return address wrongly (depending on the
2946 15th bit of the address, fixed at link time). This used to
2947 manifest itself in a segmentation violation while building PCL.
2948 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2949 many others over the years)
2950 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2951 the stack pointer (treated as a signed integer) is negative.
2952 (thanks to Peter van Eynde)
2954 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2955 * new platform: experimental support for the Windows operating
2956 system has been added. (thanks to Alastair Bridgewater)
2957 * fixed several bugs in and robustified the PPC FFI (including
2958 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2959 * bug fix: allow non-simple string symbol names (reported by Paul
2961 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2963 * bug fix: saving a core corrupted callbacks on x86/x86-64
2964 * bug fix: closed a loophole in metacircularity detection and
2965 grounding in the PCL implementation of CLOS.
2966 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2967 (reported by tomppa on #lisp)
2968 * bug fix: clear the direction flag on Lisp -> C transitions, as
2969 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2970 (reported by Andrej Grozin and Hendrik Maryns)
2971 * optimization: major improvements to GC efficiency on GENCGC platforms
2972 * optimization: faster implementation of EQUAL
2973 * optimization: emit more efficient opcodes for some common
2974 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2975 * optimization: several other minor code-generation improvements on x86-64
2976 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2978 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2979 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2980 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2981 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2982 by ANSI as a generic function, and for consistency (SETF
2983 GENERIC-FUNCTION-NAME) is treated likewise.
2984 * fixed bug #233.b: make constraint propagation notice when a variable
2985 value is changed after it is referenced but before it is used
2986 * fixed bug #296: no more arbitrary behaviour from filenames with
2987 odd characters as --load arguments. (reported by Adam Warner)
2988 * fixed bug #390: :CHARACTER-SET pathname components now work as
2989 expected. (reported by Tim Daly Jr)
2990 * fixed bug #391: complicated :TYPE intersections in slot
2991 definitions no longer cause an error in PCL internals.
2992 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2993 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2994 returning the number of octets which would be written to the
2995 file-stream. (thanks to Robert J. Macomber)
2996 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2997 arguments to the internal stream functions. (thanks to David
2999 * bug fix: stack exhaustion is now handled on the x86/SunOS
3000 platform. (thanks to Daisuke Homma)
3001 * bug fix: more accurate ROOM results on GENCGC platforms
3002 * optimization: improved type inference for arithmetic-for
3003 index variables in LOOP
3004 * optimization: faster floating-point SQRT on x86-64
3005 * fixed some bugs revealed by Paul Dietz' test suite:
3006 ** DOCUMENTATION returns NIL instead of "" for method combinations
3007 that don't have a docstring
3009 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3010 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3011 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3012 therefore are not customizeable by user code (as seems to be at
3013 least permitted and maybe required by AMOP). As a consolation,
3014 however, the SBCL implementation of these functions now calls
3015 REINITIALIZE-INSTANCE as specified by AMOP.
3016 * bug fix: slot-definition documentation is propagated as per ANSI
3017 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3018 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3019 argument, as do eslotd initialization methods. (from Pascal
3020 Costanza's "Closer" project)
3021 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3022 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3024 * bug fix: it is now possible to have more than one subclass of
3025 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3026 (reported by Bruno Haible, Pascal Costanza and others)
3027 * bug fix: the dependent update protocol now works for generic
3028 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3029 and Pascal Costanza)
3030 * bug fix: condition-class instances corresponding to
3031 DEFINE-CONDITION forms are now created eagerly. (reported by
3032 Kalle Olavi Niemitalo on comp.lang.lisp)
3033 * bug fix: floating point printing is more accurate in some
3034 circumstances. (thanks to Simon Alexander)
3035 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3036 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3037 * bug fix: callbacks on OS X now preserve stack-alignment.
3038 (thanks to Cyrus Harmon)
3039 * enhancement: the x86-64 disassembler is much better at
3040 disassembling SSE instructions. (thanks to Lutz Euler)
3041 * enhancement: CHECK-TYPE on a variable now allows type-inference
3042 (thanks to Vincent Arkesteijn)
3043 * optimization: improved performance of EUC-JP external format.
3044 (thanks to NIIMI Satoshi)
3045 * optimization: performance improvements to IO on file streams of
3046 :ELEMENT-TYPE CHARACTER
3047 * optimization: much faster memory allocation on x86-64
3048 * optimization: faster garbage collections (latency and throughput)
3050 * optimization: faster bignum subtraction and division on x86 and x86-64
3051 (thanks to Lutz Euler)
3052 * optimization: more accurate type-inference for loops that use a
3053 floating point index variable or a negative step.
3055 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3056 * bug fix: add a workaround to SBCL looping infinitely at startup on
3057 Linux kernels with apparently buggy implementations of personality().
3058 (thanks to Svein Ove Aas)
3059 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3060 (thanks to David Lichteblau)
3061 * bug fix: local bindings shadow global symbol macros for
3062 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3063 * optimization: non-open coded uses of numeric comparison operators
3064 (e.g. >) no longer cons when called with more than one parameter
3065 on platforms supporting dynamic-extent allocation.
3066 * enhancement: saving cores with foreign code loaded is now supported
3067 on MIPS/Linux in addition to the previously supported platforms.
3068 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3069 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3070 * bug fix: division by zero in sb-sprof when no samples were collected
3071 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3072 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3073 (thanks to Alexander Kjeldaas)
3074 * new feature: ignoring the return values of destructive functions
3075 like NREVERSE signals a compile-time style-warning.
3076 (thanks to Kevin Reid)
3077 * new feature: the alignment of alien structure fields can be
3078 explicitly specified. (thanks to Cyrus Harmon)
3079 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3080 and dump core on SIGQUIT
3082 ** incompatible change: threads do not inherit values of specials
3083 from their parents (see manual)
3084 ** bug fix: threads stacks belonging to dead threads are freed by the
3085 next exiting thread, no need to gc to collect thread stacks anymore
3086 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3087 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3088 ** bug fix: dynamic variable and thread start related gc lossage
3089 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3091 * fixed some bugs revealed by Paul Dietz' test suite:
3092 ** SUBTYPEP is slightly more accurate on heinously complicated
3093 CONS types where some of the members have uncertain (in the
3094 NIL, NIL sense) type relationships to each other.
3096 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3097 no longer purified unless :PURIFY T is explicitly specified.
3098 ** Non-purified cores are significantly smaller than before
3100 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3101 * new feature: timers based on Zach Beane's excellent timer package
3102 * added support for the following external formats: koi8-u,
3103 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3104 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3105 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3106 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3107 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3108 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3109 * incompatible change: a threaded SBCL will no longer revert to
3110 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3111 * bug fix: interrupts are disabled until startup is complete; no
3112 more sigsegvs when receiving a signal to soon
3113 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3115 * bug fix: add a workaround for the memory randomization features in
3116 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3117 workaround will only be in effect on systems with the proc filesystem
3119 * bug fix: printing objects of type HASH-TABLE signals a
3120 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3122 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3123 have been running for over 50 days. (reported by Gilbert Baumann)
3124 * bug fix: the logic for getting names of functions gets less
3125 confused when confronded with alternate-metaclass
3126 funcallable-instances. (reported by Cyrus Harmon)
3127 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3128 consistent, even on internal alternate-metaclass objects.
3129 * bug fix: flush closure information collected by physical
3130 environment analysis prepass before the main pass. (bug reported
3132 * bug fix: compiler pack phase does not modify a hashtable, which is
3133 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3134 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3135 may be expanded. (reported by Alexander <malishev> on c.l.l)
3136 * bug fix: no more style-warnings when compiling code using LAST
3137 under high-SPEED low-SPACE settings. (reported by David Wallin
3139 * fixed some incompatibilities between SBCL's MOP and the MOP
3141 ** the METAOBJECT class is now implemented;
3142 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3143 STANDARD-OBJECT, as required;
3144 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3145 now compatible (as required by VALIDATE-SUPERCLASS); there
3146 remains a consistency requirement over the presence or absence
3147 of the FUNCTION class in the superclass list of finalized
3148 classes; see the manual for more details;
3149 ** the :AROUND method for COMPUTE-SLOTS on
3150 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3151 requested slot ordering.
3153 ** bug fix: parent thread now can be gc'ed even with a live
3155 ** bug fix: binding a special with PROGV to no value is not
3156 the same as that symbol not having been bound (thanks to
3158 ** bug fix: binding specials is thread safe (thanks to
3160 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3161 and SB-SPROF do not die with 'no handler for signal XX in
3162 interrupt_handle_now(..)' anymore
3163 ** bug fix: WITH-TIMEOUT works with multiple running threads
3164 * fixed some bugs revealed by Paul Dietz' test suite:
3165 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3166 the :method-class keyword argument.
3168 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3169 * new port: the Solaris operating system on x86 processors is now
3170 mostly supported, though some rough edges in the environment
3171 remain. (thanks to Daisuke Homma)
3172 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3173 space for its heap. (thanks to Thiemo Seufer)
3174 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3175 closures. (thanks to Thiemo Seufer)
3176 * minor incompatible change: eof selects abort in the debugger.
3177 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3178 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3180 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3181 deprecated, and will go away in a future revision of SBCL.
3182 * minor incompatible change: GC-ON and GC-OFF are no longer
3183 implemented with a counter, it does not matter how many times gc
3184 is switched on or off
3185 * bug fix: discriminating functions for generic function classes
3186 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3187 make invalid assumptions about method precedence order. (reported
3189 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3190 platforms. (thanks to Thiemo Seufer)
3191 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3192 * bug fix: correct pathname printing with printer escaping is on.
3193 (thanks to Kevin Reid)
3194 * bug fix: complex VOP definitions in "user-space" no longer trigger
3195 package locks. (reported by Zach Beane)
3196 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3197 for funcallable-instance functions, and is no different from
3199 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3200 characters in the current readtable. (reported by Nicholas Neuss)
3201 * bug fix: SUBTYPEP on various CONS types returns more a more
3202 accurate acknowledgment of its certainty.
3203 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3204 lists in some cases. This partially fixes bug 384.
3205 * flush all standard streams before prompting in the REPL and the
3207 * bug fix: signal handling and triggering gc do not conflict
3208 directly anymore, in particular a high frequency sb-sprof does
3209 not prevent gc from running
3210 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3211 approximation for timezone and DST information between the
3212 universal time epoch and the smallest negative 32-bit time_t.
3213 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3214 year 1899 so long as the encoded time is non-negative.
3215 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3216 the correct answer for non-constant rotate amounts when performing
3217 an inline 32-bit rotation.
3219 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3220 there is only one thread in the session
3221 ** bug fix: memory leak for streams created in one thread and
3222 written to in another
3223 ** bug fix: lockup when compiled with gcc4
3224 ** bug fix: race that allows the gc to be triggered when gc is
3226 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3227 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3229 ** bug fix: finished threads are gc'ed properly
3230 * fixed some bugs revealed by Paul Dietz' test suite:
3231 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3232 has arguments with a different set of applicable methods from
3233 the orignal arguments.
3234 ** The type error thrown by MAP now has a correct expected-type
3236 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3237 name a compiled function.
3238 ** Three MISC tests where a large bignum was improperly coerced to
3239 a float that couldn't represent that bignum during type
3240 derivation were fixed.
3241 ** SUBTYPEP can now handle types involving the negation of a
3242 list-form FUNCTION type.
3243 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3244 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3245 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3247 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3248 * New feature: Experimental support for bivalent streams: streams
3249 opened with :element-type :default now allow character and binary
3250 (unsigned-byte 8) I/O
3251 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3252 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3254 * bug fix: no more highly sporadic "couldn't check whether ~S is
3255 readable" when reading a stream and an interrupt hits in the middle
3256 of a select system call
3257 * compiler better recognizes complex arrays (reported by Eduardo
3259 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3260 for variables on SBCL built with linkage-tables. (reported by Luis
3262 * various error reporting improvements.
3263 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3264 (Thanks to Thiemo Seufer)
3265 * bug fix: nested reader invokations work correctly
3266 * bug fix: it is possible to have simultaneous references to foreign
3267 code and foreign data with the same name.
3269 ** added x86-64 support
3270 ** incompatible change: the threading api now works with thread
3271 objects instead of thread ids
3272 ** bug fix: threads are protected from signals and interruption when
3273 starting up or going down
3274 ** bug fix: a race where an exiting thread could lose its stack to gc
3275 ** bug fix: don't halt on infinite error in threads if possible
3276 ** fixed numerous gc deadlocks introduced in the pthread merge
3277 ** bug fix: fixed thread safety issues in read and print
3278 ** bug fix: debugger doesn't hang on session lock if interrupted at
3279 an inappropriate moment
3280 ** bug fix: run-program is now thread safe(r)
3281 ** bug fix: inner with-recursive-lock no longer releases the mutex
3282 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3283 * fixed some bugs revealed by Paul Dietz' test suite:
3284 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3285 EXPECTED-TYPE slots filled.
3286 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3288 ** MAKE-CONDITION accepts classes as type-designators.
3289 ** COMPILE may never return NIL.
3290 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3291 range before calling Unix time functions
3293 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3294 * numerous signal handling fixes to increase stability
3295 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3296 * minor incompatible change: we now correctly canonize default
3297 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3298 as per the MOP, rather than the historical (INITARG INITFUNCTION
3299 INITFORM). (reported by Bruno Haible)
3300 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3301 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3302 for more information.
3303 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3304 pathname is a directory pathname.
3305 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3306 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3308 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3309 :METACLASS argument in addition to a class name. (reported by
3310 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3311 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3312 (reported by Bruno Haible; patch from Gerd Moellmann)
3313 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3315 * bug fix: more cleanups to the floating point exception handling on
3316 x86-64 (thanks to James Knight)
3317 * bug fix: the compiler does not try to constant fold calls of
3318 COERCE and BIT-* functions when they return freshly constructed
3319 objects. (reported by Nikodemus Siivola and Paul Dietz)
3320 * optimization: improved the MIPS versions of generic (in the
3321 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3322 * optimization: direct conversion of (unsigned-byte 32) to floats on
3323 the PowerPC platform.
3324 * optimization: structure instances with raw slots now use less
3325 memory, and probably show better memory locality. (thanks to
3327 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3328 are treated as requests for stack allocation on the x86-64,
3329 Alpha-32, PPC and SPARC platforms.
3330 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3331 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3332 (thanks to Tony Martinez)
3334 ** gcing a dead thread can no longer lead to lockups
3335 ** threads block signals until they are set up properly
3336 ** errno is no longer shared by threads
3337 ** interrupt-thread restores the eflags register on x86
3338 ** fixed some lockups due to gc/thread interaction
3339 * fixed some bugs revealed by Paul Dietz' test suite:
3340 ** invalid dotted lists no longer raise a read error when
3341 *READ-SUPPRESS* is T
3342 ** signal an error if a symbol that names a declaration is used
3343 as the name of a type, or vice versa
3344 ** allow using the (declare (typespec var*)) abbreviation for
3345 (declare (type typespec var*)) with all type specifiers
3346 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3347 ** always return NIL from PPRINT-POP when OBJECT is NIL
3348 ** don't signal errors when pretty-printing malformed LABELS,
3349 FLET or MACROLET forms
3350 ** declarations in a DOLIST body are also in scope for the
3352 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3354 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3357 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3358 * fixed cross-compiler leakages that prevented building a 32-bit
3359 target with a 64-bit host compiler.
3360 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3361 opened with :IF-EXISTS :OVERWRITE.
3362 * fixed bug 281: error for an invalid qualifier in a short-form method
3363 combination method is not signalled until the faulty method is called.
3364 * bug fix: iteration variable type inferrer failed to deal with open
3365 intervals. (reported by Alan Shields)
3366 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3367 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3368 or more runtime options were provided to the sbcl binary.
3369 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3370 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3371 * optimization: there's now a fast-path for fixnum arguments in the
3372 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3373 * optimization: the code generated on x86-64 is more compact thanks
3374 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3375 * bug fix: floating-point exception handling now partly works on
3376 x86-64. (Thanks to James Knight)
3377 * improvement to the MIPS backend from Thiemo Seufer: C-style
3378 64-bit long long arguments and return values to alien functions
3380 * fixed some bugs revealed by Paul Dietz' test suite:
3381 ** the type-error signalled from WARN has a filled-in DATUM slot.
3382 ** the type-error required when a stream is not associated with
3383 a file has the stream as its datum.
3384 ** type-errors on single-floats on x86-64 no longer have
3385 :INVALID-OBJECT as the datum
3386 ** the type-errors signalled for invalid function names now have
3387 a correct expected type
3388 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3389 for structures defined with a :TYPE. Documentation strings for
3390 typed structures are no longer immediately discarded
3391 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3392 broadcast streams and synonym streams. FILE-LENGTH now also works
3393 on broadcast streams.
3395 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3396 * incompatible change: the --noprogrammer option, deprecated since
3397 version 0.7.5, has been removed. Please use the equivalent
3398 --disable-debugger option instead.
3399 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3401 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3402 inoperational for a while now) has been completely removed.
3403 * null lexical environments are now printed as #<NULL-LEXENV>,
3404 significantly reducing the amount of clutter in typical backtraces.
3405 * documentation on weak pointers, finalization, and after GC hooks
3406 has been added to the manual.
3407 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3408 as other specialized array types, is much faster. SUBSEQ and
3409 COPY-SEQ on such arrays have also been sped up.
3410 * optimization: EQL is now more efficient when at least other argument
3411 is known to be of type (OR FIXNUM (NOT NUMBER)).
3412 * fixed bug: the runtime is now less vulnerable to changes in the
3413 size of the SBCL object on OS X, and virtual memory is reserved for
3414 all spaces that need to be at a fixed address.
3415 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3416 * fixed bug: finalizers and after GC hooks that cause consing are now
3418 * fixed bug: compiler error messages and summaries are now printed to
3419 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3420 * fixed inference of the upper bound of an iteration variable.
3421 (reported by Rajat Datta).
3422 * fixed bug 211e: calling local functions with duplicated constant
3423 keyword argument no longer causes a bogus style warning about an
3425 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3426 ftype declaration to be disregarded. (reported by Dave Roberts)
3427 * fixed bug 373: caused by erronous compilation of references to alien
3428 variables in the runtime on ppc/darwin.
3429 * fixed bug 376: CONJUGATE type deriver.
3430 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3431 (reported by Baughn on #lisp)
3432 * a cross-compiler bug on non-x86 platforms has been identified and
3433 fixed. (thanks to Bruno Haible)
3434 * improvements to the MIPS runtime code for increased stability.
3435 (thanks to Thiemo Seufer)
3436 * increased the maximimum compact environment size to allow
3437 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3438 * partial workaround for bug 135: don't name the function we're
3439 calling for hairy cases of EVAL, so as not to accumulate one environment
3440 entry per call to EVAL. (reported by Kevin Reid)
3441 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3442 * optimization: type testing for non-vector arrays should be faster.
3443 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3445 * bug fix: setting 31st element of a bit vector to zero did not work
3447 * bug fix: redefining a class definition which failed due to a
3448 previous accessor / function clash now works (but see BUGS entry
3449 #380 for more problems in this area). (thanks to Zach Beane)
3450 * the long form of DEFINE-METHOD-COMBINATION disables method group
3451 checking when given a single method group with pattern *. (thanks
3453 * on x86 compiler supports stack allocation of results of simple
3454 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3455 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3456 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3457 * fixed some bugs related to Unicode integration:
3458 ** the restarts for recovering from input and output encoding
3459 errors only appear when there is in fact such an error to
3461 * fixed some bugs revealed by Paul Dietz' test suite:
3462 ** MISC.549 and similar: late transformation of unsafe type
3463 assertions into derived types caused unexpected code
3465 ** SCALE-FLOAT type deriver is less wrong.
3466 ** type derivers for EXP, LOG and similar functions compute result
3467 types for complex arguments better.
3468 ** (MISC.563) CONJUGATE type deriver works for very restricted
3470 ** out-of-line type testers for character strings are available.
3471 ** EQUAL compiler transform understands specialness of objects
3473 ** accessing double-floats stored on the stack now works on x86-64.
3474 ** debugger internals could sometimes create invalid lispobjs,
3475 resulting in GC crashes.
3476 ** MISC.548: type check weakening can convert required type into
3478 ** initialization forms for bindings are not in scope of free special
3481 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3482 * incompatible change: thread support for non-NPTL systems has
3483 been removed - locking is buggy and unreliable. A threaded
3484 SBCL build will now warn at startup and refuse to create
3485 new threads, unless futex support is detected in the kernel
3486 * incompatible change: the top level REPL now has only an ABORT
3487 restart associated with it, not TOPLEVEL and ABORT as it used to.
3488 TOP and TOPLEVEL are now available as debugger commands for
3489 returning to the top level.
3490 * incompatible change: forms evaluated in the REPL now use the
3491 global optimization policy.
3492 * incompatible change: user- and system-initialization files are
3493 no longer processed with LOAD, but by READ and EVAL; hence the
3494 global optimization policy, startup package, readtable, etc,
3496 * The .fasl file format number has been incremented because of
3497 various incompatible changes.
3498 * internal entry point details and argument counts no longer appear
3499 in backtraces unless explicitly requested by setting
3500 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3501 * built-in and standard functions no longer have names like "top
3502 level local call to FOO".
3503 * fixed bug 32: functions defined in non-null lexical environments
3504 now have more legible printed representation
3505 * fixed bug 33: functions defined in non-null lexical environemnts
3506 are now more amenable to inspection by INSPECT.
3507 * workaround for bug 354: XEPs no longer appear in backtraces unless
3508 explicitly requested.
3509 * fixed bug: receiving the signal which results from attempting to
3510 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3511 SIGBUS on other *BSDs) on architectures where the C stack is also
3512 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3513 to debugger confusion or wild instability. (reported by Cheuksan
3515 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3516 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3517 (reported by Lutz Euler)
3518 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3519 compiled code. (reported by Paul Dietz)
3520 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3521 specialized parameter to a method to something that is not TYPEP
3522 the specializer is now possible.
3523 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3524 face of package deletion.
3525 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3526 pathname. (reported by David Tolpin on c.l.l)
3527 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3528 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3529 STRING-STREAM and FILE-STREAM, respectively.
3530 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3531 than previously; in addition, its test suite is now run on build.
3532 (thanks to Luke Gorrie)
3533 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3534 * optimization: added a immediate representation for single-floats
3536 * fixed some bugs revealed by Paul Dietz' test suite:
3537 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3538 ** attempting to create a package with a colliding nickname causes
3539 correctable errors to be signalled.
3540 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3541 ** several x86-64 backend bugs related to sign-extension of immediate
3544 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3545 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3546 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3548 * fixed loading of multiply forward-referenced layouts.
3549 (thanks to Cheuksan Wang)
3550 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3551 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3552 (see COMPILE-FILE documentation for details of :PRINT option)
3553 * fixed bugs 19 and 317: fixed-format floating point printing is
3554 more accurate. This also fixes a bug reported by Adam Warner
3555 related to the ~@F format directive.
3556 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3558 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3559 dispatch table if the from-char is a dispatch macro character.
3560 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3561 by the wordsize no longer ignore the last word. (reported by Lutz
3563 * fixed bug in type checking of dynamic-extent variables. (reported
3565 * optimization: sequence traversal functions use their freedom to
3566 coerce function designators to functions.
3567 * optimization: code with many calls to CLOS methods specialized on
3568 CLOS classes has had redundant type checks removed.
3569 * optimization: added declarations to speed up operations that access
3570 the internal character database (for example STRING-UPCASE)
3571 * optimization: comparison operations between floats and sufficiently small
3572 fixnums no longer create extra rationals
3573 * fixed some bugs related to Unicode integration:
3574 ** portions of multibyte characters at the end of buffers for
3575 character-based file input are correctly transferred to the
3576 start of the buffer at the next read.
3577 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3578 passing it through to OPEN.
3579 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3580 argument given to internal calls to OPEN.
3581 ** the built-in comment readers (introduced by character sequences
3582 ";" and "#|") are more forgiving to encoding errors; they will
3583 STYLE-WARN and then attempt to resync the stream at a character
3584 boundary. (thanks to Teemu Kalvas)
3585 * fixed some bugs in the x86-64 port:
3586 ** Negative short int return values from c-calls are sign-extended
3588 ** The stack is aligned to 16-bytes for c-calls, as required by
3589 the ABI. (thanks to Cheuksan Wang)
3590 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3591 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3592 for enums. (thanks to Vincent Arkesteijn)
3593 ** Multiple small optimizations and bugfixes for floating point
3595 * fixed some bugs revealed by Paul Dietz' test suite:
3596 ** Space, Tab, Linefeed, Return and Page have the invalid
3597 secondary constituent character trait.
3598 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3600 ** WITH-INPUT-FROM-STRING should only update the index place on
3602 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3603 works more reliably.
3604 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3605 with one-dimensional arrays with fill pointers.
3606 ** TYPE-OF failed on a complex with an integer realpart and a
3608 ** compiler failure during type inference for the code of form
3609 (IF (EQL X (THE ...)) ...) (MISC.535).
3611 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3612 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3613 platform. The port supports 61-bit fixnums, large memory spaces
3614 and reloading shared object files.
3615 * enhancement: saving cores with foreign code loaded is now
3616 supported on ppc/Darwin in addition to the previously supported
3618 * enhancement: the statistical profiler now walks deeper into the
3619 call stack for more meaningful call-graphs and accrued time
3620 reports (x86/x86-64 only). It also now reports time spent in
3622 * enhancement: it is now possible to trace most individual methods
3623 of a generic function in addition to tracing the generic function
3625 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3627 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3628 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3629 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3630 produces an error. (thanks to Vincent Arkesteijn)
3631 * bug fix: NAMESTRING on pathnames with :WILD components in their
3632 directories works correctly. (thanks to Artem V. Andreev)
3633 * fixed bug 125: compiler preserves identity of closures. (reported
3635 * bug fixed: functions with &REST arguments sometimes failed with
3636 "Undefined function" when compiled with (DEBUG 3). (reported by
3638 * bug fix: overflow during compiling of setting element of a bit
3639 vector with constant index and value. (reported by Timmy Douglas)
3640 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3641 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3642 * on x86 compiler partially supports stack allocation of dynamic-extent
3644 * GO and RETURN-FROM do not check the extent of their exit points
3645 when compiled with SAFETY 0.
3646 * fixed some bugs related to Unicode integration:
3647 ** encoding and decoding errors are now much more robustly
3648 handled; it should now be possible to recover even from invalid
3649 input or output to the terminal. (thanks to Teemu Kalvas)
3650 ** provided a first cut at implementing STRING-TO-OCTETS and
3651 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3652 ** altered the SB-MD5 contributed module slightly, changing the
3653 interface just enough for it to be supportable for builds where
3654 lisp characters are not eight bits.
3655 * fixed some bugs revealed by Paul Dietz' test suite:
3656 ** the FORMATTER-generated functions for ~V[ conditionals require
3657 the correct number of arguments.
3658 ** READ-FROM-STRING returns the mandated second value when applied
3659 to displaced strings.
3660 ** the #\Rubout and #\Backspace characters are treated as invalid
3661 constituent characters by the tokenizer.
3663 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3664 * new feature: reloading changed shared object files with
3665 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3666 * new feature: references to foreign variables and functions
3667 can now be compiled and loaded before the corresponding shared
3668 object file is loaded, as long as the foreign definitions are
3669 available at runtime.
3670 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3671 supported. (thanks to Dan Debertin)
3672 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3673 just keywords. (thanks to Vincent Arkesteijn)
3674 * fixed bug #331: structure-class instances corresponding to
3675 DEFSTRUCT forms are now created eagerly.
3676 * fixed bug #345: backtraces from calls to undefined functions work
3677 on x86 as well. Related bug #61 is now also partially fixed on x86
3678 (backtraces from throws to unknown catch tags.)
3679 * bug fix: lambda-list parsing is now stricter vrt. order and number
3680 of lambda-list keywords.
3681 * bug fix: as specified by AMOP, an error is signalled if a
3682 class-option appears multiple times in a DEFCLASS form. (reported
3684 * bug fix: RANDOM can be compiled when the compiler derives the type
3685 of its numeric argument as a disjoint set of small integers.
3686 (reported by Paul Dietz)
3687 * bug fix: starting a core saved with shared objects loaded when
3688 those objects are not available no longer causes threaded SBCL to
3689 hang. (reported by Sean Ross)
3690 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3692 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3693 argument, which must always be NIL. (reported by Kalle Niemitalo)
3694 * bug fix: printing 1.0d+23 no longer results in an error.
3695 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3696 * bug fix: structure slot setters preserve evaluation order. (thanks
3698 * fixed some bugs related to Unicode integration:
3699 ** RUN-PROGRAM can allow its child to take input from a Lisp
3700 stream. (reported by Stefan Scholl)
3701 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3702 locales. (reported by Ken Causey)
3703 * fixed some bugs revealed by Paul Dietz' test suite:
3704 ** INCF, DECF and REMF evaluate their place form as specified in
3706 ** FORMATTER expands ~{ ~} iteration directives with V or #
3707 parameters correctly.
3708 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3709 consequent uses no arguments correctly.
3710 ** the system has a partial understanding of the (COMPLEX RATIO)
3712 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3715 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3716 * new feature: a build-time option (controlled by the :SB-UNICODE
3717 keyword feature, enabled by default) for building the system with
3718 support for the entire 21-bit character space defined by the
3720 * new feature: the system now has rudimentary external-format
3721 support; the primary user-visible change at this time is that
3722 characters with the high bit set (such as lower-case-e-acute) will
3723 print correctly to a terminal in a UTF-8 environment.
3724 * minor incompatible change: BASE-CHAR no longer names a class;
3725 however, CHARACTER continues to do so, as required by ANSI.
3726 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3727 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3728 has been moved to the SB-EXT package (temporarily re-exported from
3730 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3731 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3733 * fixed bug #351: better error-handlind and reporting for malformed
3735 * fixed bug #350: bignum-printing is now more memory-efficient,
3736 allowing printing of very large bignums, eg. (expt 2 10000000).
3737 (reported by Bruno Haible)
3738 * fixed bug #302: better primitive-type selection for intersection
3740 * fixed bug #308: non-graphic characters now all have names, as
3741 required. (reported by Bruno Haible)
3742 * bug fix: redefining a class with different superclasses now correctly
3743 removes it from the direct-subclasses of its previous superclasses.
3744 (reported by David Morse)
3745 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3746 new value now works. (reported by Bruno Haible)
3747 * bug fix: correct canonicalization of multiple non-standard slot
3748 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3749 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3750 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3751 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3752 now exists, an signals an error.
3753 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3754 during macroexpansion for non-iteration variables as well. (reported
3755 by Bruno Haible for CMUCL)
3756 * bug fix: Cyclic structures and unprintable objects in compiler
3757 messages no longer cause errors. (reported by Bruno Haible)
3758 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3759 and READ-FROM-STRING all now return a primary value of NIL if
3760 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3761 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3762 (reported by Bruno Haible for CMUCL)
3763 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3764 do not designate a condition. (reported by Bruno Haible for
3766 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3767 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3768 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3769 permitting resolution in favour of any of the conflicting symbols.
3770 (reported by Bruno Haible for CMUCL)
3771 * bug fix: EQUAL compiler optimizations is less aggressive on
3772 strings which can potentially compare true despite having distinct
3773 specialized array element types.
3774 * bug fix: unit enumerations can be defined without dividing by
3775 zero. (thanks to Vincent Arkesteijn)
3776 * FORMAT compile-time argument count checking has been enhanced.
3777 (report from Bruno Haible for CMUCL)
3778 * a partial workaround for the bug 262: the compiler does not try to
3779 inline-expand a local function doing RETURN-FROM from a deleted
3780 BLOCK. (thanks to Peter Denno for the bug report and to David
3781 Wragg for the simple test case)
3782 * fixed some bugs revealed by Paul Dietz' test suite:
3783 ** RENAME-PACKAGE allows all package designators as new package
3785 ** constraint propagation and lambda variable substitution are
3786 more cautious in dealing with partially deleted code.
3787 ** compiler sometimes lost reoptimization passes.
3788 ** CERROR, given a condition as condition designator, passes its
3789 remaining arguments to the continue format control without
3791 ** Case-altering FORMAT directives work correctly on non-ASCII
3793 ** The REAL type specifier handles bounds outside the floating
3794 point ranges without signalling FLOATING-POINT-OVERFLOW.
3795 ** Functions with IR1-transformations can create intercomponent
3796 references to global functions.
3797 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3799 ** FORMAT ~R treats a nil value for its first parameter correctly.
3801 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3802 * enhancement: saving cores with foreign code loaded is now
3803 supported on x86/NetBSD and sparc/Linux in addition to the previously
3804 supported platforms.
3805 * bug fix: on some platforms repeated installations caused multiple
3806 copies of HTML documentation to be installed -- should not happen
3807 any more. (reported by Stefan Scholl)
3808 * bug fix: parsing self-recursive alien record types multiple times
3809 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3810 original patch by Helmut Eller for CMUCL)
3811 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3812 (thanks to Richard Kreuter)
3813 * bug fix: defining classes whose accessors are methods on existing
3814 generic functions in other (locked) packages no longer signals
3815 bogus package lock violations. (reported by François-René Rideau)
3816 * bug fix: special variables as DEFMETHOD parameters no longer have
3817 associated bogus type declarations. (reported by David Wragg and
3819 * bug fix: read-write consistency on streams of element-type
3820 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3821 * bug fix: redefiniton of the only method of a generic function with
3822 no DEFGENERIC no longer emits a full WARNING. In addition,
3823 redefinition of generic functions with no DEFGENERIC to an
3824 incompatible lambda list now signals an error. (thanks to Zach
3826 * bug fix: DEFGENERIC now works even when there's a function of the
3827 same name in an enclosing lexical environment. (thanks to Zach
3829 * fixed compiler failure, caused by instrumenting code during
3830 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3831 * optimization: added loop analysis and improved register allocation
3832 * fixed some bugs revealed by Paul Dietz' test suite:
3833 ** POSITION on displaced vectors with non-zero displacement
3834 returns the right answer.
3835 ** (SIMPLE-STRING) is a valid type specifier for sequence
3837 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3839 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3840 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3842 ** The justification version of the FORMAT ~< directive treats
3843 non-zero minpad parameter correctly.
3845 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3846 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3847 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3848 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3849 the supported interface.
3850 * new feature: Single-stepping of code compiled with DEBUG 2 or
3851 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3852 * new feature: saving cores with foreign code loaded is now
3853 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3854 Timothy Moore's work for CMUCL)
3855 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3856 parameters to * instead of NIL if no initform is supplied.
3857 (reported by Johan Bockgaard)
3858 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3859 correctly when FUNCALL appears as the car of the form. Note:
3860 despite this FUNCALL forms are not currently subject to
3861 compiler-macro expansion. (port of Raymond Toy's fix for the
3862 same from CMUCL, reported by Johan Bockgaard)
3863 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3864 (thanks for Teemu Kalvas)
3865 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3866 case instead of terminating the iteration (thanks for Julian
3867 Squires, Sean Champ and Raymond Toy)
3868 * bug fix: incorrect expansion of defgeneric that caused a style
3869 warning. (thanks for Zach Beane)
3870 * bug fix: slot accessor effective method computation works properly
3871 for classes with multiple non-standard applicable methods on
3872 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3873 * on x86 compiler supports stack allocation of results of LIST and
3874 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3875 CMUCL implementation by Gerd Moellmann)
3876 * fixed some bugs revealed by Paul Dietz' test suite:
3877 ** FORMAT strings with both the ~<~:;~> form of the justification
3878 directive and pretty-printing directives cause an error.
3880 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3881 * incompatible change: the internal functions
3882 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3883 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3884 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3885 instead of the old functions.
3886 * new feature: on platforms where "dladdr" is available foreign
3887 function names now appear in backtraces. (based on Helmut Eller's
3889 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3890 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3892 * documentation: ASDF manual is now distributed with SBCL.
3893 * bug fix: SBCL can now load its contributed modules with REQUIRE
3894 even if the system-provided entries have been removed from
3895 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3897 * bug fix: backtraces involving undefined functions or assembly
3898 routines are more informative. (thanks to Brian Downing)
3899 * bug fix: mutually referent alien structures now work correctly.
3900 (reported by Rick Taube)
3901 * bug fix: structures defined by WITH-ALIEN can be referred to
3902 within other definitions in the same WITH-ALIEN.
3903 * bug fix: division operators (MOD, TRUNCATE and the like) with
3904 constant zero divisors and integer dividends no longer generate
3906 * bug fix: provide default methods for INPUT-STREAM-P and
3907 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3908 * bug fix: improve the detection and resolution of MOP metacycles
3909 (where effective method computation depends on the generic function
3910 having its effective method computed). (reported by Bruno Haible)
3911 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3912 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3913 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3914 * bug fix: pathnames with relative directory components can be
3915 represented relative to default pathnames.
3916 * optimization: in taking the GCD of bignums, reduce the two bignums
3917 to approximately the same size (using Euclid's algorithm) before
3918 applying the more sophisticated binary GCD. (thanks to Juho
3920 * optimization: COUNT on bitvectors now operates word-at-a-time.
3921 * optimization: ASH with a positive, but not necessarily constant,
3922 (leftwards) shift, when in a modular context, is compiled to a
3924 * fixed some bugs revealed by Paul Dietz' test suite:
3925 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3926 if the corresponding argument is NIL.
3927 ** FORMAT directives accepting a minpad parameter treat negative
3929 ** literal commas as character parameters to FORMAT directives are
3931 ** literal spaces directly after ~<Newline> directives within a
3932 format-logical-block (~:< ~@:>) do not induce :FILL-style
3933 conditional newlines.
3934 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3935 as specified: it no longer includes conditional newlines).
3936 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3938 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3939 :PER-LINE-PREFIX argument does not evaluate to a string.
3941 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3942 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3943 the manual for details; for now, package locks can be disabled by
3944 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3945 if no major problems are found then it is likely that they will be
3946 compiled in unconditionally.
3947 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3948 unsupported operators on all platforms. To load a shared library
3949 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3950 object file, link it into a shared library outside of SBCL and
3951 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3953 * bug workaround: ROOM T and the GC were not working together
3954 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3955 reporting facility aren't preserved. That reporting has been
3956 disabled, so now until and unless someone figures out how to make it
3957 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3958 * minor incompatible change: as threatened around sbcl-0.8.0, the
3959 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3960 The symbols are also exported from SB-PCL for backwards
3961 compatibility, but more so than before SB-PCL should be treated as
3962 an implementation-internal package.
3963 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3965 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3966 It is known as of this release not to work on the Alpha, however.
3967 * fixed bug #167: errors signalled due to illegal syntax in method
3968 bodies are now more legible.
3969 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3970 designators and can hence be used with TYPEP.
3971 * fixed bug #333: CHECK-TYPE now ensures that the type error
3972 signalled, if any, has the right object to be accessed by
3973 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3974 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3975 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3977 * fixed bug #334: programmatic addition of slots using specialized
3978 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3979 and :ALLOCATION :CLASS slots.
3980 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3981 float exponents. (rereported by Peter Seibel)
3982 * fixed a bug: #\Space (and other whitespace characters) are no
3983 longer considered to be macro characters in standard syntax by
3984 GET-MACRO-CHARACTER.
3985 * fixed bug: initialization of condition class metaobjects no longer
3986 causes an instance of the condition to be created. (reported by
3988 * fixed bug: it is now possible to have slots such that
3989 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3990 description is neither :INSTANCE nor :CLASS.
3991 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3992 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3993 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3994 non-standard SLOT-DEFINITION-ALLOCATION values.
3995 * fixed bugs: various race conditions handling exiting threads.
3996 CL-PPCRE's thread torture test now passes.
3997 * fixed arguably-a-bug: GC time proportional to number of threads in
3998 system even when most of them are idle
3999 * optimization: improved performance of BIT and SBIT on bit-vectors.
4000 * .fasl file incompatibility: The fasl file version number has
4001 been incremented because of changes associated with package locks.
4003 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4004 * minor incompatible change: the system no longer provides
4005 optimization hints (conditions which are TYPEP
4006 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4007 mode; these hints are still emitted when higher SPEED optimization
4009 * new contrib module: a sampling profiler (profiling by statistical
4010 sampling, rather than by instrumenting functions) is available as
4011 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4012 * the behaviour of the standard function ED is now customizeable by
4013 third parties through a hook variable: see ED's documentation
4014 string for information on the protocol.
4015 * the compiler no longer emits efficiency notes for (FUNCALL X)
4016 when the type of X is uncertain under default optimization
4018 * fixed bug 276: mutating a binding of a specialized parameter to a
4019 method to something that is not TYPEP the specializer is now
4021 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4022 exhibit the required behaviour on the x86 platform. (thanks to
4023 Peter van Eynde, Eric Marsden and Bruno Haible)
4024 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4025 even for difficult arguments. (reported by Peter Graves)
4026 * fixed bug 141a: the backquote printer now descends quoted
4028 * fixed another bug in backquote printing: no more destructive
4029 modification of the form's list structure. (reported by Brian
4031 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4032 move between its address being taken and the call to
4033 interrupt_thread, fixing a crashing race condition.
4034 * the SB-POSIX contrib implementation has been adjusted so that it
4035 no longer exhibits ridiculously poor performance when constructing
4036 instances corresponding to C structs.
4038 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4039 * minor incompatible change: the sb-grovel contrib now treats C
4040 structures as alien (in the sense of SB-ALIEN) objects rather than
4041 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4042 has implications for memory management of client code
4043 (sb-grovel-returned objects must now be manually managed) and for
4044 type safety (alien objects now have full types).
4045 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4046 used to control emission of compiler diagnostics, rather than the
4047 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4048 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4049 quality should be considered deprecated.
4050 * install.sh now installs the user manual as well
4051 * (not quite a new documentable feature, but worth considering in
4052 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4053 beginnings of a semantically meaningful condition hierarchy is
4054 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4056 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4057 designator as the defaults argument.
4058 * fixed bug: Displaced arrays whose displaced-to array has become
4059 too small now cause ARRAY-DIMENSION to signal an error, providing
4060 for safer bounds-checking. (reported by Bruno Haible)
4061 * fixed bug: DEFCLASS slot definitions with identical :READER and
4062 :WRITER names now signal a reasonable error. (reported by Thomas
4064 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4066 * fixed bug: Invalid slot specification errors now print correctly.
4067 (thanks to Zach Beane)
4068 * fixed bug 320: Shared to local slot value transfers in class
4069 redefinitions now happen corrently from superclasses as
4070 well. (reported by Bruno Haible)
4071 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4073 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4074 improper lists correctly. (reported by Bruno Haible)
4075 * fixed bug 313: source-transform for <fun-name> was erroneously
4076 applied to a call of a value of a variable with name <fun-name>.
4077 (reported by Antonio Menezes Leitao)
4078 * fixed bug 307: The obsolete instance protocol ensures that
4079 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4080 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4081 remove dead unknown-values globs from the middle of the stack.
4082 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4083 easier to resume long computations after using *BREAK-ON-SIGNALS*
4084 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4085 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4086 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4087 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4088 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4089 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4091 * fixed a (fairly theoretical) bug in string printing: if
4092 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4093 does not have array-element-type equal to the most general string
4095 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4096 function name. (thanks to Nikodemus Siivola)
4097 * fixed bug: compile-time format string checker failed on
4098 non-closed ~{. (reported by Thomas F Burdick)
4099 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4100 don't warn on legal loop code involving more than one aggregate
4101 boolean. (thanks to Nikodemus Siivola)
4102 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4103 in keyword position to MAKE-PACKAGE was not being reported as
4105 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4106 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4108 * fixed bugs 280 and 312: the checking for multiple definitions in a
4109 file is less likely to become confused by uses of inline
4111 * fixed bug: the #S reader macro performs the keyword coercion
4112 specified for slot names. (reported by Kalle Niemitalo)
4113 * fixed bug: lambda lists may contain symbols whose names start with
4114 & but are not lambda-list-keywords; their occurrence triggers a
4116 * fixed bug 321: define-method-combination argument lambda lists do
4117 not cause invalid code to be generated when &optional or &aux
4118 variables have default values. (reported by Bruno Haible)
4119 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4120 have CLOS classes; this appears also to have fixed reported
4121 instability in stack exhaustion detection.
4122 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4123 MUFFLE-WARNING when no associated restart is present is now
4125 * optimization: rearranged the expansion of various defining macros
4126 so that each expands into only one top-level form in a
4127 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4129 * optimization: used a previously little-used slot in symbols to
4130 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4132 * fixed some bugs revealed by Paul Dietz' test suite:
4133 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4135 ** Fixed an optimization bug related to inheritance of initforms
4136 from local to shared slots.
4137 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4138 ** CAST optimizer forgot to flush argument derived type.
4139 ** print/read consistency on floats is now orders of magnitude
4140 more likely. (thanks also to Bruno Haible for a similar report
4142 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4143 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4144 for objects of type REAL. Make it so.
4145 ** SXHASH is specified (infelicitously) to respect similarity,
4146 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4147 it so. (thanks to Markus Ziegler)
4148 ** on the Alpha, the compiler succeeds in compiling functions
4149 returning a known number of arguments greater than 63.
4150 ** fixed handling of invalid NIL arguments in keyword position
4152 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4154 ** provided a readably-printable representation for RANDOM-STATE
4156 ** ensured that pathnames, where they have a namestring, always
4157 print using #P"..." syntax.
4159 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4160 * Support for the forthcoming 2.0 version of the NetBSD kernel
4161 running on x86 hardware has been added. (thanks to Perry
4162 E. Metzger most immediately, and others for their past work)
4163 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4164 current release version; SBCL's OpenBSD support had been broken
4165 since about the time of OpenBSD's switch to ELF binary format.)
4166 * [placeholder for DX summary]
4167 ** user code with &REST lists declared dynamic-extent, under high
4168 speed or space and low safety and debug optimization policy.
4169 * The manual has been converted to Texinfo format and the debugger
4170 chapter from the cmucl manual has been added.
4171 * A facility has been added to extract documentation strings from
4172 sbcl and store them as Texinfo-formatted snippets for inclusion in
4173 the manual (via Texinfo's @include directive)
4174 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4175 the test case to Dave Roberts)
4176 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4177 pointers. (reported by Sean Ross)
4178 * bug fix: PROFILE output is printed nicely even for large numerical
4179 values. (thanks to Zach Beane)
4180 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4181 greater than 32 handle EOF correctly.
4182 * bug fix: on X86 an immediate argument of the IMUL instruction is
4183 correctly printed in disassembly. (thanks to Lutz Euler)
4184 * bug fix: class slots in redefined classes preserve their old
4185 values. (thanks to Bruno Haible and Nikodemus Siivola)
4186 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4187 succeeds. (reported by Marco Baringer)
4188 * fixed some bugs revealed by Paul Dietz' test suite:
4189 ** READ-SEQUENCE now works on ECHO-STREAMs.
4190 ** RATIONALIZE works more according to its specification. (thanks
4193 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4194 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4195 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4196 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4197 should matter to you only if you rebind the printer control
4198 variables and then find you want different bindings in the
4199 debugger than in the ordinary execution of your program.)
4200 * The runtime build system has been tweaked to support building
4201 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4202 assembler and linker. (thanks to Nikodemus Siivola)
4203 * Unbound, undefined, undeclared variables now trigger full
4204 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4205 more often programmer error than deliberate exploitation of undefined
4207 * optimization: the hash algorithm for strings has changed to one
4208 that is less vulnerable to spurious collisions. (thanks to Juho
4210 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4211 needless bounds checking. (thanks to Juho Snellman)
4212 * optimization: implemented multiplication as a modular
4213 (UNSIGNED-BYTE 32) operation on the PPC backend.
4214 * fixed some bugs revealed by Paul Dietz' test suite:
4215 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4217 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4218 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4219 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4221 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4223 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4225 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4226 their output stream on EOF from read.
4227 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4228 have been read to end-of-file.
4229 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4231 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4232 description of determination of which consecutive characters
4234 ** Printing the "Space" character with escaping on now yields "#\\ ",
4235 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4236 ** Reading floating-point numbers with *READ-BASE* set to a number
4237 less than 10 works correctly.
4238 ** Reading floating-point numbers with *READ-BASE* set to a number
4239 more than 10 works correctly.
4240 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4241 the readtable currently in effect.
4243 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4244 * minor incompatible change: parsing of namestrings on a physical
4245 (Unix) host has changed; numbers after the final #\. in a
4246 namestring are no longer interpreted as a version field. This is
4247 intented to be largely invisible to the user, except that the
4248 meaning of the namestring "*.*.*" has changed: it now refers to a
4249 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4250 should usually be replaced by
4251 (make-pathname :name :wild :type :wild :version :wild)
4252 with the added benefit that this is more likely to be portable.
4253 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4254 option to OPEN now signals an error if the file being opened
4255 exists; this may have an impact on existing code.
4256 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4257 signals received, on the PowerPC platforms (both Linux and
4258 Darwin). (thanks to Pierre Mai for pointing out the location of
4260 * several fixes on OS X: The system now builds and runs cleanly on
4261 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4262 (thanks to Brian Mastenbrook)
4263 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4264 second-resolution: integer multiples of 1/3600 between -24 and 24.
4265 (thanks to Vincent Arkesteijn)
4266 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4267 type when called with 1 argument; PEEK-CHAR checked type of
4268 PEEK-TYPE only after having read first character from a
4269 stream. (reported by Peter Graves)
4270 * bug fix: the garbage collector now has much better locality
4271 behaviour, and in particular no longer treats all memory as being
4272 exhausted when many small objects point to each other in a deeply
4274 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4275 recognized as being TYPEP their class.
4276 * bug fix: the PUSHNEW documentation string has been corrected.
4277 (thanks to Vincent Arkesteijn)
4278 * bug fix: defaulting of the value for the last of an atypically
4279 large number of multiple values being bound was not being
4280 performed correctly on the Alpha or PPC platforms
4281 * optimization: implemented multiplication as a modular
4282 (UNSIGNED-BYTE 32) operation on the x86 backend.
4283 * optimization: SEARCH on simple-base-strings can now be open-coded.
4284 (see also contrib/compiler-extras.lisp for inspiration for
4285 teaching the compiler about the Boyer-Moore algorithm).
4286 * value, returned by MAX (and MIN) called with several EQUALP, but
4287 not EQL, arguments now does not depend on compiler settings.
4288 * fixed some bugs revealed by Paul Dietz' test suite:
4289 ** in stack analysis liveness information is propagated from
4290 non-local entry points.
4291 ** pathwise CAST removing failed when the CAST node did not start
4293 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4294 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4296 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4297 host is already defined.
4298 ** RENAME-FILE works on streams instead of signalling an internal
4300 ** PEEK-CHAR uses the current readtable when determining whether
4301 or not a character is whitespace.
4302 ** MERGE-PATHNAMES handles the case when the pathname does not
4303 specify a name while the default-pathname specifies a version.
4304 ** Pathnames now stand a better chance of respecting print/read
4306 ** Attempting to use standardized file system operators with a
4307 pathname with invalid :DIRECTORY components signals a
4309 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4311 ** DIRECTORY on logical pathnames is more correct.
4312 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4313 signal a TYPE-ERROR if their argument is not a stream.
4314 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4315 designator argument does not designate a stream.
4316 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4317 examining the synonym.
4318 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4320 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4321 element-type larger than ([UN]SIGNED-BYTE 32).
4323 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4324 * When built with the :SB-FUTEX feature, threaded builds now take
4325 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4326 for faster/more reliable mutex and condition variable support.
4327 * Incompatible change (but one you probably shouldn't have been using
4328 anyway): the interface and code for arbitrating between multiple
4329 threads in the same user session has been redesigned.
4330 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4331 error when called without an explicit environment argument.
4332 (thanks to Nikodemus Siivola)
4333 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4334 confused about their position. (thanks to Adam Warner and Gerd
4336 * bug fix: Pretty printing backquoted forms with unquotations in the
4337 argument list position of various code constructs such as LAMBDA
4338 now works correctly. (reported by Paul Dietz)
4339 * bug fix: Pretty printing unquotations no longer loses all
4340 stream position information.
4341 * optimization: performance of string output streams is now less
4342 poor for multiple small sequence writes.
4343 * optimization: performance of CSUBTYPEP in the presence of complex
4344 expressions involving CONS and NOT many times has been improved.
4345 (reported by Paul Dietz)
4346 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4348 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4349 streams for the REPL, for the debugger, and so on. (thanks to
4351 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4352 * fixed some bugs revealed by Paul Dietz' test suite:
4353 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4354 is ignored if it is too small, rather than propagating through
4355 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4356 ** extremely complex negations of CONS types were not being
4357 sufficiently canonicalized, leading to inconsistencies in
4359 ** VALUES tranformer lost derived type.
4361 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4362 * fixed a bootstrapping bug: the build process no longer assumes
4363 that the various BOOLE-related constants have the same value in
4364 host and target lisps. (noted by Paul Dietz' test suite on an
4365 SBCL binary built from CLISP)
4366 * The system can now be dynamically linked on the MIPS platform,
4367 which enables dynamic loading of foreign code from Lisp. (thanks
4368 to Ralf Baechle for discussions on the MIPS ABI)
4369 * The system now records debugging information for its own source
4370 files in a filesystem-position-independent manner, relative to
4371 the "SYS" logical host.
4372 * fixed a compiler bug: MV-LET convertion did not check references
4373 to the "max args" entry point. (reported by Brian Downing)
4374 * tweaked disassembly notes to be less confident about proclaiming
4375 some instruction as an LRA. (thanks to Brian Downing)
4376 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4377 now each have their own history, command character, and other
4378 characteristics. (thanks to David Lichteblau)
4379 * fixed some bugs revealed by Paul Dietz' test suite:
4380 ** compiler failure in compiling LOGAND expressions including a
4382 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4383 shift greater than 32.
4384 ** FLUSH-DEST did not mark blocks for type check regeneration.
4385 ** HANDLER-CASE failed to accept declarations in handler clauses
4386 in some circumstances.
4388 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4389 * New code in contrib/sb-introspect (still probably not entirely
4390 stable yet) provides some support for smart Lisp development
4391 environments like SLIME.
4392 * The conditions signalled for errors occurring when loading .fasl
4393 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4394 in a way which should help ASDF recover gracefully.
4395 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4396 stuff has been cleaned up. If you code contrib/ stuff, this might
4397 affect you, and you can look at contrib/README, contrib/STANDARDS,
4398 and/or the 0.8.4.27 diff to check.
4399 * In full calls the compiler now does not generate checks for declared
4400 argument types for all arguments.
4401 * various threading fixes
4402 ** and some experimental patches which didn't make it into
4403 the main tree for this release, but which are shipped in
4404 contrib/experimental-thread.patch as a possible fix for some
4405 failures (deadlock, spinning...) in GC-intensive multithreaded
4407 * fixed PPC build problem (source code incompatibility of different
4408 library versions): added offsetof() hackery which attempts to divine
4409 where glibc maintainers put uc_mcontext today
4410 * fixed bug 282: compiler does not trust type assertions while passing
4411 arguments to a full call.
4412 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4413 &OPTIONAL VALUES type parameter.
4414 * fix bug 214: algorithm for noting rejected templates is now more
4415 similar to that of template seletion. (also reported by rydis on
4417 * fixed bug 141b: printing backquoted information readably and prettily
4418 inserts a space where necessary.
4419 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4420 (CHARACTER 10) are now reported as errors, rather than propagated
4421 as unknown types. (reported by piso on #lisp)
4422 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4423 with values NIL and :ERROR. (thanks to Milan Zamazal)
4424 * fixed bug 191c: CLOS now does proper keyword argument checking as
4425 described in CLHS 7.6.5 and 7.6.5.1.
4426 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4427 longer raise an error; further, using a list as a for-as-arithmetic
4428 counter now raises a meaningful error.
4429 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4430 now understood by sequence creation functions such as MAKE-SEQUENCE
4432 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4433 a STRING-INPUT-STREAM.
4434 * compiler enhancement: SIGNUM is now better able to derive the type
4436 * type declarations inside WITH-SLOTS are checked. (reported by
4438 * fixed some bugs revealed by Paul Dietz' test suite:
4439 ** incorrect optimization of TRUNCATE for a positive first
4440 argument and negative second.
4441 ** compiler failure in let-convertion during flushing dead code.
4442 ** compiler failure while deriving type of TRUNCATE on an
4443 interval, containing 0.
4444 ** ASH of a negative bignum by a negative bignum count now returns
4446 ** intersection of CONS types now canonicalizes properly, fixing
4447 inconsistencies in SUBTYPEP.
4449 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4450 * incompatible change: The --disable-debugger command line
4451 option now clobbers the debugger at a more fundamental
4452 level, by redefining #'INVOKE-DEBUGGER instead of by
4453 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4454 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4455 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4456 enter the debugger REPL and then suffer recursive errors
4457 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4458 while under the new system, BREAK in --disable-debugger mode
4459 terminates the system just as an unhandled error would.
4460 * fixed compiler performance when processing loops with a step >1;
4461 * bug fix: DOCUMENTATION now retrieves generic function
4462 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4463 support has been systematized, and now supports the methods
4464 specified by ANSI, along with a default method and a method for
4465 slot documentation. (reported by Nathan Froyd)
4466 * bug fix: effective methods associated with a generic function are
4467 no longer cached over a change of that generic function's method
4468 combination. (reported by Andreas Fuchs)
4469 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4470 names a non-existent directory. (thanks to Andreas Fuchs)
4471 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4472 the PPC platform, lead to stack corruption; this has been fixed.
4473 (reported by Rainer Joswig)
4474 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4475 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4476 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4477 arithmetic in general, is now much more reliable on the PPC
4479 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4480 platform now returns the right answer.
4481 * optimization: restored some effective method precomputation in
4482 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4483 precomputation is now tunable.
4484 * optimization: compiler-internal data structure use has been
4485 reviewed, and changes have been made that should improve the
4486 performance of the compiler by about 20%.
4487 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4488 simple-base-strings and simple-bit-vectors is improved.
4489 * optimization: the optimization of 32-bit logical and arithmetic
4490 functions introduced in version 0.8.3 on the x86 has been
4491 implemented on the mips, ppc and sparc platforms; an
4492 implementation of the same facility, but for 64-bit arithmetic,
4493 has been added for the alpha.
4494 * microoptimization: the compiler is better able to make use of the
4495 x86 LEA instruction for multiplication by constants.
4496 * bug fix: in some situations compiler did not report usage of
4497 generic arithmetic in (SPEED 3) policy.
4498 * bug 145b fix: compiler used wrong type specifier while converting
4499 MEMBER-types to numeric.
4500 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4502 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4503 index argument now works properly on the Alpha platform.
4504 * bug fix: floating point exception treatment on the Alpha platform
4506 * bug fix: FILE-POSITION works much better on string input and
4507 output streams. (thanks to Nikodemus Siivola)
4508 * bug fix: many threading/garbage collection symptoms sorted.
4509 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4510 might be pseudo-atomic.
4511 * internal change: Stopping for GC is now done with signals not
4512 ptrace. GC is now done in whichever thread wanted it, instead of
4514 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4516 * bug fix: result form in DO is not contained in the implicit
4518 * incompatible change: ICR structure is changed; the value part of
4519 CONTINUATION is now called LVAR; corresponding functions are
4520 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4521 * added type deriver for ISQRT (thanks to Robert E. Brown).
4522 * bug fix: better support for loading from the command line when an
4523 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4525 * fixed some bugs revealed by Paul Dietz' test suite:
4526 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4527 ** ROUND and FROUND now give the right answer when given very
4528 small float arguments.
4529 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4531 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4532 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4533 ** LCM should return a non-negative integer.
4534 ** PARSE-INTEGER returned the index of a terminator instead of the
4535 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4536 ** PARSE-INTEGER returned an incorrect index being applied to a
4538 ** LCM with two arguments of 0 returns 0 rather than signalling
4540 ** unsigned addition of a 32-bit constant with the high bit set no
4541 longer causes an internal compiler error on the x86.
4542 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4543 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4544 with negative last argument.
4545 ** byte specifiers with zero size and position no longer cause
4546 an error during type derivation.
4547 ** bignum multiplication on the Alpha platform now returns the
4549 * porting: The system now builds on SuSE AMD64, although it still
4550 generates a 32-bit binary.
4551 * .fasl file incompatibility: The fasl file version number has
4552 been incremented (because of the changes to internal compiler
4553 data structures referred to above).
4555 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4556 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4557 more accurately, on the Darwin kernel running on PowerPC hardware.
4558 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4559 * Compiler code deletion notes now signal a condition of type
4560 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4561 an associated MUFFLE-WARNING restart.
4562 * The compiler now performs limited argument count validation of
4563 constant format strings in FORMAT, and where appropriate in ERROR,
4564 CERROR and WARN. (thanks to Gerd Moellmann)
4565 * New ASDF-INSTALL contrib can be used for automatic download and
4566 installation of third-party Lisp code from CCLAN or other sites
4568 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4569 which forces another thread to execute a function supplied by the
4571 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4572 now accept and act upon their :ELEMENT-TYPE keyword argument.
4573 (reported by Martin Atzmueller, Edi Weitz)
4574 * bug fix: FILE-POSITION now accepts position designators up to
4575 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4576 is the greater. (thanks to Patrik Nordebo)
4577 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4578 Kalle Olavi Niemitalo)
4579 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4580 printable. (reported by Eric Marsden)
4581 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4582 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4583 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4584 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4585 (thanks to Stig Sandoe)
4586 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4587 UNREAD-CHAR now correctly includes the unread character in the
4588 target sequence. (thanks to Gerd Moellmann)
4589 * bug fix in threaded builds: the system can now be suspended and
4590 resumed by shell job control with minimal disruption.
4591 * bug fixes in times and timezones >2038AD
4592 * better handling of "where is GNU make?" problem in build scripts
4593 (thanks to Nikodemus Siivola)
4594 * new optimization: inside a named function any reference to a
4595 function with the same name is considered to be a self-reference;
4596 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4597 optimization quality.
4598 * new optimization on x86: logical functions and + now have
4599 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4600 used when the result is truncated to 32 bits.
4601 * VALUES declaration is partially enabled.
4602 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4603 * fixed some bugs revealed by Paul Dietz' test suite:
4604 ** The system now obeys the constraint imposed by
4605 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4606 types form a lattice under type intersection.
4607 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4608 ** ASSOC now ignores NIL elements in an alist.
4609 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4610 and (1+ MOST-POSITIVE-FIXNUM) answers.
4611 ** The addition of a method with invalid qualifiers to a generic
4612 function does not cause an error to be signalled immediately;
4613 a warning is signalled, and the error is generated only on
4614 calling the generic function.
4615 * changed .fasl file version number, in part to add type codes for
4616 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4617 obscure ANSI requirements
4619 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4620 * fixed bug 148: failure to inline-expand a local function left
4621 garbage, confusing the compiler.
4622 * fixed bugs 3cd: structure slot readers perform type check if the
4623 slot can have an invalid value (i.e. it is either not initialized
4624 or can be written with a less specific slot writer).
4625 * bug fix: the compiler now traps array references to elements off
4626 the end of an array; previously, the bounds checking in some
4627 circumstances could go off-by-one.
4628 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4630 * type declarations for array element types now obey the description
4631 on the CLHS page "Declaration TYPE", as per discussions on
4632 sbcl-help around 2003-05-08. This means that a declaration
4633 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4634 declaration, all references to BAR will be asserted or assumed
4635 (with THE, so dependent on compiler policy) to involve objects of
4636 type FOO. Note that no such declaration is implied in
4637 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4638 * declared types of functions from the "Conditions"
4639 chapter. (reported by Paul Dietz)
4640 * bug fix: CERROR accepts a function as its first argument.
4641 * bug fix: NTH an NTHCDR accept a bignum as index
4642 arguments. (reported by Adam Warner)
4643 * optimization: character compare routines now optimize comparing
4644 against a constant character. (reported by Gilbert Baumann)
4645 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4646 argument now works properly on the MIPS platform.
4647 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4648 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4649 declared to have a functional type, does not cause an error
4651 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4652 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4653 * fixed bug: if last continuation of a deleted block has a
4654 destination, this destination should be deleted too. (reported by
4656 * fixed a bug in the bootstrap process: the host compiler's values
4657 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4658 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4659 test case from Patrik Nordebo)
4660 * improved the ability of the disassembler on the PPC platform to
4661 provide helpful disassembly notes.
4662 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4663 the class in more cases than previously.
4664 * bug fix: FILE-POSITION now understands :START and :END for
4665 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4666 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4667 8) data. (thanks to David Lichteblau)
4668 * bug fix: it is possible to add a method to a generic function
4669 without lambda list.
4670 * bug fix: reader failed to signal END-OF-FILE inside an
4671 object representation. (reported by Nikodemus Siivola)
4672 * fixed some bugs revealed by Paul Dietz' test suite:
4673 ** LAST and [N]BUTLAST should accept a bignum.
4674 ** condition slot accessors are methods.
4675 ** (VECTOR NIL) is a subtype of STRING.
4677 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4678 * minor incompatible change: some nonsensical specialized lambda
4679 lists (used in DEFMETHOD) which were previously ignored now signal
4681 * minor incompatible change: the system is now aware of the types of
4682 variables in the COMMON-LISP package, and will signal errors for
4683 most violations of these type constraints (where previously they
4684 were silently accepted).
4685 * minor incompatible change: COMPILE-FILE now uses the freedom
4686 afforded (ANSI 3.2.2.3) to use derived function types for
4687 functions defined in the same file. This also permits the system
4688 to warn on static type mismatches and function
4689 redefinition. (Currently it does not work with high DEBUG level.)
4690 * minor incompatible change: VALUES declaration is disabled.
4691 * When issuing notes, the compiler now signals a condition of type
4692 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4693 restart for use in user handlers. It is expected that the
4694 COMPILER-NOTE condition will eventually become a condition
4695 supertype to a hierarchy of note types, which will then be
4696 handleable in a similar fashion. However, at the moment, no such
4697 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4698 but it's an implementation detail, not a classification for the
4700 * Changes in type checking closed the following bugs:
4701 ** type checking of unused values (192b, 194d, 203);
4702 ** template selection based on unsafe type assertions (192c, 236);
4703 ** type checking in branches (194bc).
4704 * A short form of VALUES type specifier has ANSI meaning (it has
4705 increased the number of situations when SBCL cannot perform type
4707 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4708 keywords or constants is permissible.
4709 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4710 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4711 classes. (thanks to Antonio Martinez)
4712 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4713 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4714 argument to a pretty-print stream. Instead, it leaves any such
4715 operations to DESCRIBE-OBJECT methods.
4716 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4718 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4719 lambda lists. (thanks to David Lichteblau)
4720 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4721 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4722 (thanks to Gerd Moellmann)
4723 * fixed bug 246: increased compilation speed of long
4724 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4726 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4728 * DEFCONSTANT now throws a condition of type
4729 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4730 constant to a non-EQL value; CONTINUE and ABORT restarts
4731 respectively change and preserve the value.
4732 * fixed bug 63: The code walker, part of the implementation of CLOS,
4733 is now better at handling symbol macros.
4734 * bug fix: There is no longer an internal implementation type named
4735 CL:LENGTH. (reported by Raymond Toy)
4736 * bug fix: In macro-like defining macros/special operators the
4737 implicit block does not enclose the lambda list.
4738 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4739 enclosed in parentheses) are not suitable as type specifiers, and
4740 their use properly signals an error now.
4741 * bug fix: An argument count mismatch for a type specifier in code
4742 being compiled no longer causes an unhandled error at compile
4743 time, but signals a compile-time warning.
4744 * fixed simple vector readable printing
4745 * bug fix: DESCRIBE takes more care over whether the class
4746 precedence list slot of a class is bound before accessing it.
4747 (reported by Markus Krummenacker)
4748 * bug fix: FORMATTER can successfully compile pretty-printer format
4749 strings which use variants of the ~* directive inside.
4750 * bug fix: SEARCH now applies its TEST predicate to the elements of
4751 the arguments in the correct order. (thanks to Wolfhard Buss)
4752 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4753 in type inference. (thanks to Robert E. Brown)
4754 * bug fix: Reading in symbols with an explicit package name of ""
4755 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4756 * fixed some bugs revealed by Paul Dietz' test suite:
4757 ** NIL is now allowed as a structure slot name.
4758 ** Arbitrary numbers, not just REALs, are allowed in certain
4759 circumstances in LOOP for-as-arithmetic clauses.
4760 ** Multiple class redefinitions before slot access no longer
4761 causes a type error.
4762 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4763 association between the name and a class.
4764 ** Generic functions with non-standard method-combination and over
4765 five methods all of which return constants no longer return NIL
4766 after the first few invocations. (thanks to Gerd Moellmann)
4767 ** CALL-NEXT-METHOD with no arguments now passes the original
4768 values of the arguments, even in the presence of assignment.
4769 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4771 ** DISASSEMBLE works with closures and funcallable instances.
4772 ** ADD-METHOD now returns the generic function, not the new method.
4773 ** FIND-METHOD signals an error if the lengths of the specializers
4774 is incompatible with the generic function, even if the ERRORP
4776 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4777 which its argument is a member.
4778 ** DEFCLASS only redefines the class named by its class-name
4779 argument if that name is the proper name of the class;
4780 otherwise, it creates a new class.
4781 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4782 of the UNBOUND-SLOT condition to the name of the slot.
4783 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4784 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4785 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4786 SLOT-MAKUNBOUND in the specified fashion.
4788 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4789 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4790 cross-compilation host. As a consequence, we can now bootstrap our
4791 way up to SBCL starting with a bare gcc toolchain and human-readable
4792 source code (first the source to CLISP, then the source to SBCL).
4793 * A contributed module containing a partial implementation of the
4794 simple-streams interface has been included. (thanks to Rudi
4796 * A contributed module implementing the RFC1321 Message Digest
4797 Algorithm, known as MD5, has been included.
4798 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4799 no longer has any effect, as the code controlled by this feature
4800 has been deleted. (As far as we know, no-one has ever built using
4801 this feature, and its semantics were confused in any case).
4802 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4803 work on conditions (as required by the ANSI specification),
4804 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4805 expected behaviour on conditions. Users should note, however,
4806 that such behaviour is not required by the ANSI specification,
4807 and so use of this behaviour may render their code unportable.
4808 * fixed some bugs revealed by Paul Dietz' test suite:
4809 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4811 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4812 ** SXHASH on condition objects no longer returns NIL.
4813 ** :ALLOCATION :CLASS slots are better treated; their values are
4814 updated on class redefinition, and initforms inherited from
4815 superclasses are applied.
4816 ** REMOVE-METHOD returns its generic function argument even when
4817 no method was removed.
4818 ** SHARED-INITIALIZE now initializes the values of the requested
4819 slots, including those with :ALLOCATION :CLASS.
4820 ** ALLOCATE-INSTANCE now works on structure classes defined via
4821 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4823 ** SLOT-EXISTS-P now works on conditions, as well as structures
4825 ** MAKE-LOAD-FORM now has the required methods on
4826 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4827 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4828 keyword, and now implements the SLOT-NAMES argument.
4829 ** methods with &OPTIONAL arguments no longer allow too many
4830 arguments to be passed in the call without error.
4831 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4832 option is consistent with the required arguments of the generic
4833 function lambda list.
4834 * bug fix: REQUIRE accepts a string designator. (Thanks to
4836 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4837 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4838 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4839 * bug fix: The compiler now checks for duplicated variables in macro
4841 * bug fix: SETQ on globals returns the correct value.
4842 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4843 not a COMPILER-ERROR (followed by some other strange error on
4844 choosing the CONTINUE restart).
4845 * bug fix: make.sh and friends are now more consistent in the way that
4846 they look for GNU "make".
4848 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4849 * experimental native threads support (on x86 Linux >=2.4 only).
4850 This is not compiled in by default: you need to add :SB-THREAD to
4851 the target features. See the "Beyond ANSI" chapter of the manual
4853 * fix for longstanding nonANSIism: The old distinction between
4854 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4855 The return value from CL:FIND-CLASS is now a CLOS class, and
4856 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4857 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4858 * An interface to the MetaObject Protocol, as described in Kiczales,
4859 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4860 MIT Press, 1991, is available from the SB-MOP package.
4861 * incompatible change: the SB-PCL package should now be considered
4862 a private implementation detail, and no longer a semi-private MOP
4864 * minor incompatible change: due to rearrangement for threads, the
4865 control stack and binding stack are now allocated at arbitrary
4866 addresses instead of being hardcoded per-port. Users affected by
4867 this probably have to be doing advanced things with shared
4868 libraries, and will know who they are.
4869 * minor incompatible change: Previously, all --eval forms used were
4870 processed with READ before any of them were processed with EVAL.
4871 Now each --eval form is processed with both READ and EVAL before
4872 the next --eval form is processed. (Thus package operations like
4873 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4874 work as the user might reasonably expect.)
4875 * minor incompatible change: *STANDARD-INPUT* is now only an
4876 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4878 * minor incompatible change: Y-OR-N-P is now character-oriented,
4879 not line oriented. Also, YES-OR-NO-P now works without errors.
4880 (thanks to Antonio Martinez)
4881 * sb-aclrepl module improvements: an integrated inspector, added
4882 repl features, and a bug fix to :trace command.
4883 * Known functions, which cannot be open coded by the backend, are
4884 considered to be able to check types of their arguments. (fixing
4885 a bug report by Nathan J. Froyd)
4886 * fixed a bug in computing method discriminating functions: It is
4887 now possible to define methods specialized on classes which have
4888 forward-referenced superclasses. (thanks to Gerd Moellmann)
4889 * fixed evaluation order in optional entries (reported by Gilbert
4891 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4892 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4893 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4894 required-by-AMOP NAME argument, as well as CLASS and
4895 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4896 * fixed bug 20: DEFMETHOD can define methods using names that are
4897 not the proper names of classes to designate class specializers.
4898 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4899 Unix file descriptors, instead of blowing up. (thanks to Antonio
4901 * Garbage collection refactoring: user-visible change is that a
4902 call to the GC function during WITHOUT-GCING will not do garbage
4903 collection until the end of the WITHOUT-GCING. If you were doing
4904 this you were probably losing anyway.
4905 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4906 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4907 TYPEP the latter but not the former.
4908 * The compiler issues a full WARNING for calls to undefined functions
4909 with names from the CL package.
4910 * MAP-INTO for a vector destination is open coded. (reported by
4911 Brian Downing on c.l.l)
4912 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4913 documentation string.
4914 * fixed some bugs revealed by Paul Dietz' test suite:
4915 ** COPY-ALIST now signals an error if its argument is a dotted
4917 ** Condition slots are now accessed more correctly in the presence
4918 of multiple initargs for a given slot.
4919 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4920 exclude restarts of the same name associated with a different
4922 ** DEFCLASS of forward-referenced classes with another
4923 forward-referenced class in the superclasses list no longer
4925 ** Condition slots are now initialized once each, not multiple
4926 times. (thanks to Gerd Moellmann)
4927 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4929 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4930 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4931 arguments contain duplicated elements.
4932 ** RESTART-CASE understands local macros.
4933 ** RESTART-CASE associates exactly its own restarts with a condition.
4934 ** ENDP in safe mode checks its argument to be of type LIST.
4935 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4936 in question is unbound.
4937 ** Optimized MAKE-INSTANCE functions no longer cause internal
4938 assertion failures in the presence of duplicate initargs.
4939 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4940 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4941 propagated even in the ctor optimized implementation of
4943 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4945 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4946 * a better implementation of SXHASH on (simple) bit vectors,
4947 measured both in execution speed and in distribution of results
4948 over the positive fixnums, has been installed. Likewise, a better
4949 implementation of EQUAL for simple bit vectors is now available.
4950 * fixed CEILING optimization for a divisor of form 2^k.
4951 * fixed bug 240 (emitting extra style warnings "using the lexical
4952 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4953 by Antonio Martinez)
4954 * fixed SXHASH, giving different results for NIL depending on type
4955 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4956 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4957 variable. (found by Rolf Wester)
4958 * SBCL does not ignore type declarations for special
4959 variables. (reported by rif on c.l.l 2003-03-05)
4960 * some bug fixes in contrib/sb-aclrepl/
4961 * fixed some bugs revealed by Paul Dietz' test suite:
4962 ** a bug in the CONS type specifier, whereby the CAR and CDR
4963 types got intertwined, has been fixed;
4964 ** the type system is now able to reason about the interaction
4965 between INTEGER and RATIO types more completely;
4966 ** APPEND, [N]REVERSE and NRECONC check that those their
4967 arguments, which must be proper lists, are really so;
4968 ** An array specialized to be unable to hold elements has been
4969 implemented, as required -- yes, really -- by ANSI;
4970 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4971 on malformed property lists;
4973 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4974 * incompatible packaging change: in line with Unix convention,
4975 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4976 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4977 * REQUIRE and PROVIDE are now optionally capable of doing something
4978 useful. See the documentation string for REQUIRE.
4979 * infrastructure for a managed SBCL contrib system: contributed
4980 modules in this release include:
4981 ** the ASDF system definition facility;
4982 ** an interface to the BSD Sockets API;
4983 ** an ACL-like convenience interface to the repl;
4984 (thanks to Kevin Rosenberg)
4985 ** an implementation of ROTATE-BYTE, with efficient implementation
4987 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4988 gives a closer approximation to the right answer than previously.
4989 (thanks to Raymond Toy)
4990 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4991 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4992 optional environment arguments, as required by ANSI.
4993 * fixed bugs in other functions taking environment objects, allowing
4994 calls with an explicit NIL environment argument to be compiled
4996 * fixed bug 228: primary return values from
4997 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4998 COMPILE or FUNCTION.
4999 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5000 :TYPE will no longer signal errors on innocuous objects.
5001 * fixed bug 231b: SETQ is better at respecting type declarations in
5002 the lexical environment.
5003 * fixed a bug in DEFCLASS: classes named by symbols with no or
5004 unprintable packages can now be defined.
5005 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5006 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5007 * fixed compiler failure related to checking types of functions.
5008 (reported by Robert E. Brown)
5009 * the compiler is now much more consistent in its error-checking
5010 treatment of bounding index arguments to sequence functions: in
5011 (SAFETY 3) code, errors will be signalled in almost all cases if
5012 invalid sequence bounding indices are passed to functions defined
5013 by ANSI to operate on sequences.
5014 * fixed a bug in the build procedure: documentation of SBCL-specific
5015 packages is now preserved and available in the final Lisp image.
5016 * lifted FDEFINITION lookup out of loops in the implementation of
5017 many list operations. (thanks to Robert E. Brown)
5018 * fixed a bug in the reader: the #n# reader macro now works for
5019 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5020 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5021 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5022 E. Brown and Tony Martinez respectively)
5023 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5024 SLOT-BOUNDP: in particular, it is now able to optimize them much
5025 better, and is now not vulnerable to having packages renamed.
5026 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5027 always called when a slot is not present in an instance. (thanks
5029 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5030 longer signal an error on unreading a character following EOF on
5031 the previous constituent stream. (thanks to Tony Martinez)
5032 * fixed some bugs revealed by Paul Dietz' test suite:
5033 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5034 not just nonnegative fixnums;
5035 ** the logical bit-array operators such as BIT-AND now accept an
5036 explicit NIL for their "opt-arg" argument (to indicate a
5037 freshly-consed result bit-array);
5038 ** ELT now signals an error on an invalid sequence index in safe
5040 ** the type system is now cleverer about negations of numeric
5041 types, and consequently understands the BIGNUM and RATIO types
5043 ** the type system is now cleverer about the interaction between
5044 INTEGER and RATIO types: while bugs still remain, many more
5045 cases are accurately computed;
5046 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5047 if it is in the last clause;
5048 ** CONSTANTLY now correctly returns a side-effect-free function in
5050 ** DECLARE is no longer treated as a special-operator; in
5051 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5052 * incremented fasl file version number due to the change in the
5053 DEFSTRUCT-SLOT-DESCRIPTION structure.
5055 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5056 * minor incompatible change: code processed by the "interpreter" or
5057 EVAL now has a compilation optimization policy of (DEBUG 2)
5058 (changed from (DEBUG 1)) to improve debuggability of interactive
5059 development, and to allow the use of the debug RETURN command in
5061 * an experimental implementation of the RETURN command for the
5062 debugger has been included. (thanks to Frederik Kuivinen)
5063 * fixed bug 62: constraints were not propagated into a loop.
5064 * fixed bug in embedded calls of SORT (reported and investigated by
5066 * fixed some bugs revealed by Paul Dietz' test suite:
5067 ** printing and reading of arrays with some dimensions having
5068 length 0 (thanks to Gerd Moellmann);
5069 ** BOA constructor with &AUX argument without a default value does
5070 not cause a type error;
5071 ** CONSTANTP now returns true for all self-evaluating objects.
5073 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5074 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5075 accessors that are related by inheritance, as specified in the
5076 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5077 Valtteri Vuorikoski)
5078 * The compiler is now able to inline functions that were defined in
5079 a complex lexical environment (e.g. inside a MACROLET).
5080 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5082 * Support for the upcoming FreeBSD-5.0 release has been included.
5083 (thanks to Dag-Erling Smorgrav)
5084 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5085 effect when it is not in a toplevel context.
5086 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5087 stand a better chance of being correct. (thanks to Gerd
5089 * fixed bug in COERCE, which now signals an error on coercing a
5090 rational to a bounded real type which excludes the expected
5092 * The compiler is now able to derive types more accurately from the
5093 COERCE and COMPILE functions.
5094 * fixed bug 223: functional binding is considered to be constant
5095 only for symbols in the CL package.
5096 * fixed bug 231: SETQ did not check the type of a variable being set
5097 (reported by Robert E. Brown)
5098 * A new optimization for MAKE-INSTANCE has been included, fixing
5099 various bugs (including relating to :ALLOCATION :CLASS slots and
5100 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5102 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5103 ** As required by ANSI, LOOP now disallows anonymous collection
5104 clauses such as COLLECT I in conjunction with aggregate boolean
5105 clauses such as THEREIS (= I 1);
5106 ** LOOP now signals an error when any variable is reused in the
5107 same loop (including the potentially useful construct analogous
5108 to WITH A = 1 WITH A = (1+ A);
5109 ** IT is only a special loop symbol within the first clause of a
5110 conditional loop clause;
5111 ** LOOP with a typed iteration variable over a hashtable now
5112 signals a type error iff it should.
5113 * fixed some other bugs revealed by Paul Dietz' test suite:
5114 ** FILE-STREAM now names the class previously known as FD-STREAM;
5115 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5116 argument) no longer signals an error;
5117 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5118 of the slot symbol, rather than using the current package
5119 ((:CONC-NAME "") continues to intern the slot's name in the
5121 * incremented fasl file version number, because of the incompatible
5122 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5123 of the new implementation of DEFINE-COMPILER-MACRO.
5125 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5126 * Support for building SBCL for MIPS platforms running in
5127 little-endian mode has now been checked in, and basic
5128 functionality on said platforms verified.
5129 * minor incompatible change: PCL now records the pathname of a file
5130 in which methods and the like are defined, rather than its
5132 * minor incompatible change: TRUENAME now considers the truename of
5133 a file naming a directory to be the pathname with :DIRECTORY
5134 component indicating that directory.
5135 * minor incompatible change: a NAMED clause in the extended form of
5136 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5137 reason for the previous behaviour is unclear.
5138 * more systematization and improvement of CLOS and MOP conformance
5139 in PCL (thanks to Gerd Moellman and Pierre Mai):
5140 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5142 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5143 primary methods with no specializers;
5144 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5146 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5147 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5148 FORWARD-REFERENCED-CLASSes; error reporting on
5149 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5151 ** SXHASH on CLOS instances now uses a slot internal to the
5152 instance to return different numbers on distinct instances,
5153 while preserving the same return value through invocations of
5155 ** DEFMETHOD signals errors when methods with longer incongruent
5156 lambda lists are added to generic functions;
5157 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5158 CLASS, as specified in AMOP;
5159 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5160 on the order returned by the primary method for classes of
5161 class STANDARD-CLASS;
5162 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5163 * fixed some bugs shown by Paul Dietz' test suite:
5164 ** DOLIST puts its body in TAGBODY;
5165 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5167 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5168 value producing form;
5169 ** if more variables are given to PROGV than values, extra
5170 variables are bound and made to have no value;
5171 ** NSUBSTITUTE on list arguments gets the right answer with
5173 ** ELT signals an error of type TYPE-ERROR when the index argument
5174 is not a valid sequence index;
5175 ** LOOP signals (at macroexpansion time) an error of type
5176 PROGRAM-ERROR when duplicate variable names are found;
5177 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5178 ** FUNCALL of special-operators now cause an error of type
5180 ** PSETQ now works as required in the presence of side-effecting
5181 symbol-macro places;
5182 ** NCONC accepts any object as its last argument;
5183 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5185 ** loop-for-as-package does not require a package to be explicitely
5187 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5189 * fixed bug 166: compiler preserves "there is a way to go"
5190 invariant when deleting code.
5191 * fixed bug 172: macro lambda lists with required arguments after
5192 &REST arguments now cause an error to be signalled. (thanks to
5194 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5195 bug. (thanks to Matthew Danish)
5196 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5198 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5199 arguments are lexically rebound. (thanks to Gerd Moellmann and
5201 * fixed bug 194: error messages are now more informative when there
5202 is no primary method applicable in a call to a generic
5203 function. (thanks to Gerd Moellmann)
5204 * fixed bug in command line argument checking (thanks to Julian
5206 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5207 (thanks to Matthew Danish)
5208 * incremented fasl file version number, because of the
5209 SXHASH-related changes in the layout of CLOS data structures
5211 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5212 * minor incompatible change: The runtime (the Unix executable named
5213 "sbcl") is now much pickier about the .core files it will load.
5214 Essentially it now requires .core files to descend from the same
5215 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5216 as the runtime does. (The intent is to prevent the crashes which
5217 can occur, and which can even be reported as mysterious failures,
5218 when people patch the sources or change the build parameters
5219 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5220 sbcl and .core files.)
5221 * fixed bug: VALUES-LIST is no longer optimized away.
5222 * fixed bug 142: The FFI conversion of C string values to Lisp
5223 string values no longer conses excessively. (thanks to Nathan
5224 Froyd porting Raymond Toy's fix to CMU CL)
5225 * began to systematize and improve MOP conformance in PCL (thanks to
5226 Nathan Froyd, Gerd Moellman and Pierre Mai):
5227 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5229 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5230 ** FINALIZE-INHERITANCE is now called on class finalization;
5231 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5232 argument precedence order.
5233 * fixed bug 202: The compiler no longer fails on functions whose
5234 derived types contradict their declared type.
5235 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5236 so it can be non-toplevel.
5237 * The fasl file version number has changed (because of the new
5238 implementation of DEFMACRO).
5239 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5240 safe code, that any length requirement by their type-specifier
5241 argument is valid. The exceptions to this are described in bug
5243 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5244 functions now check the types of their inputs as required by ANSI.
5245 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5246 introduced symbol is DECLAREd to be SPECIAL.
5247 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5248 * fixed bug: :COUNT argument to sequence functions may be negative
5249 * fixed bug: body of DO-SYMBOLS may contain declarations
5250 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5251 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5252 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5253 symbol macro only once
5254 * fixed printing of call frame when argument list is unavailable
5255 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5256 * compiler no longer signals WARNING on unknown keyword
5259 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5260 * A beta-quality port to the mips architecture running Linux,
5261 based on the old CMUCL backend, has been made. It has been tested
5262 on a big-endian kernel, and works sufficiently well to be able to
5263 rebuild itself; it has not been tested in little-endian mode.
5264 * fixed an inconsistency between gencgc.c and purify.c which made
5265 dumping/loading .core files unreliable
5266 * fixed bug 120a: The compiler now deals correctly with IFs where
5267 the consequent is the same as the alternative, instead of
5268 misderiving the return type. (thanks to Alexey Dejneka)
5269 * fixed bug 113: Logical pathnames are now dumpable (the logical
5270 host is resolved at load-time, throwing an error if it is not
5272 * fixed bug 174: FORMAT's error message is slightly clearer when a
5273 non-printing character is used in a format directive.
5274 * fixed several bugs in compiler checking of type declarations, i.e.
5275 violations of the Python "declarations are assertions" principle
5276 (thanks to Alexey Dejneka)
5277 * fixed several bugs in PCL's error checking (thanks to Gerd
5279 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5281 * fixed bug in compilation of functions as first class values
5282 (thanks to Antonio Martinez-Shotton)
5283 * The compiler's handling TYPE-ERRORs which it can prove will
5284 inevitably happen at runtime has been cleaned up and corrected
5285 in several ways. (thanks to Alexey Dejneka)
5286 * improved argument type checking for various basic arithmetic
5287 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5288 lavished on them in the past that they can be compiled in many
5289 ways in different special cases
5290 * fixed bug 181: compiler checks validity of user supplied type
5292 * cleaned up code flushing in optimization: Function calls which
5293 should signal errors for safety purposes (e.g. which ANSI says
5294 should signal errors when their arguments are of incorrect type)
5295 are no longer optimized away.
5296 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5297 * incremented fasl file version number, because changes in the
5298 implementation of sequence functions like COERCE caused
5299 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5300 in old inline expansions) to become undefined. (Actually these
5301 changes were later undone, so we might very well be binary
5302 compatible with 0.7.7 after all, but leaving the version number
5303 incremented seemed like the simplest and most conservative
5306 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5307 * An alpha-quality port to the parisc architecture running Linux,
5308 based on the old CMUCL backend, has been made. This, even more so
5309 than the other backends, should be considered still a work in
5310 progress; known problems include that the Linux kernel in 64-bit
5311 mode does not propagate the correct sigcontext structure to
5312 userspace, and consequently SBCL on a parisc64 kernel will not
5314 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5315 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5316 suppressed.) Also now that the compiler is looking at declarations
5317 in the environment, it checks optimization declarations as well,
5318 and suppresses inlining when (> DEBUG SPEED).
5319 * More fixes have been made to treatment of floating point exception
5320 treatment and other Unix signals. In particular, floating point
5321 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5322 * The detection and handling of control stack exhaustion (infinite
5323 or very deeply nested recursion) has changed. Stack exhaustion
5324 detection is now done by write-protecting pages at the OS level
5325 and applies at all optimization settings; when found, a
5326 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5327 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5328 be caught using IGNORE-ERRORS.
5329 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5330 correctly when transforming recursive LABELS functions to LETs.
5331 (thanks to Alexey Dejneka)
5332 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5333 that are names of constants or global variables.
5334 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5335 alien routines with docstrings.
5336 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5337 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5339 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5340 (thanks to Eric Marsden)
5341 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5342 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5343 * Bug fix: The SPARC backend can now compile functions involving
5344 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5345 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5346 to a functions expecting a PATHNAME-DESIGNATOR.
5347 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5348 lambda lists. (thanks to Alexey Dejneka)
5349 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5350 functions so that EXPORTing the name of the class doesn't cause
5351 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5352 to Antonio Martinez for reporting this)
5353 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5354 constant-folded without failing an assertion. (thanks to Einar
5355 Floystad Dorum for reporting this)
5356 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5357 types are now dealt with more correctly by the compiler.
5358 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5359 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5360 behaviour analogous to RENAME-FILE. This puts its behaviour more
5361 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5363 * The fasl file version number has changed again. (because of the
5364 bug fix involving the names of PCL MAKE-INSTANCE functions)
5366 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5367 * bug fix: Floating point exceptions are treated much more
5368 consistently on the x86/Linux and PPC/Linux platforms.
5369 * Array initialization with :INITIAL-ELEMENT is now much faster for
5370 cases when the compiler cannot open code the array creation, but
5371 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5372 array accesses have also seen a speed increase.
5373 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5374 specified. (This was at the root of some bad interactions between
5375 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5377 * bug fix: Internal error arguments for undefined functions are now
5378 computed correctly on the PPC/Linux platform.
5379 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5380 Raymond Toy's patch for CMU CL)
5381 * Support for the Solaris 9 operating environment has been included
5382 (thanks to Daniel Merritt)
5383 * A very ugly but hopefully complete draft of the missing FFI chapter
5384 of the manual has been created by reformatting the corresponding
5385 CMU CL manual chapter into (currently very ugly and incoherent)
5386 DocBook and bringing it up to date for SBCL behavior. Thus, the
5387 manual is now essentially complete, at least by my extreme
5388 once-and-only-once standards, whereby it's acceptable to refer to
5389 the doc strings of SB-EXT functions as the primary documentation.
5390 * The fasl file version number has changed again, due to cleanup of
5391 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5392 is no longer a static symbol.)
5394 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5395 * SBCL now builds with OpenMCL (version 0.12) as the
5396 cross-compilation host; also, more progress has been made toward
5397 bootstrapping under CLISP.
5398 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5400 * bug 158 fixed: The compiler can now deal with integer loop
5401 increments different from 1; fixing this turned out also to fix
5403 * bug 169 fixed: no more bogus warnings about using lexical bindings
5404 despite the presence of perfectly good SPECIAL declarations (thanks
5405 to David Lichteblau)
5406 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5407 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5408 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5410 * bug 180 fixed: Method combination specifications no longer ignore
5411 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5412 * bug fix: Structure type predicate functions now check their argument
5413 count as they should.
5414 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5415 correctly. (thanks to Pierre Mai)
5416 * minor incompatible change: The --noprogrammer option is deprecated
5417 in favor of the new --disable-debugger option, which is very similar.
5418 (The major difference is that it takes effect at a slightly different
5419 time at startup, causing handling of errors in --sysinit and
5420 --userinit files will be affected differently.) The
5421 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5422 been added to allow this functionality to be controlled from ordinary
5423 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5424 maintainers, who might want to run non-interactive scripts to
5425 build SBCL cores which will later be used interactively.)
5426 * minor incompatible change: The LOAD function no longer, when given
5427 a wild pathname to load, loads all files matching that pathname.
5428 Instead, an error of type FILE-ERROR is signalled.
5430 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5431 * bug 147 fixed: The compiler preserves its block link/count
5432 invariants more correctly now so that it doesn't crash. (thanks
5434 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5436 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5437 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5438 no-value-for-this-character as NIL (as specified by ANSI).
5439 * HOST-NAMESTRING on physical pathnames now returns a string that is
5440 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5441 (thanks to Christophe Rhodes)
5442 * The Alpha port handles icache flushing more correctly. (thanks to
5444 * More progress has been made toward bootstrapping under CLISP. (thanks
5445 to Christophe Rhodes)
5446 * The fasl file format has changed again, because dynamic loading
5447 on OpenBSD (which has non-ELF object files) motivated some cleanups
5448 in the way that foreign symbols are transformed and passed around.
5449 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5450 is no longer treated as whitespace by the reader, but instead as
5451 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5452 |A
\7fB|, instead of A as it used to.
5454 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5455 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5456 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5457 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5458 this as of 0.7.1.45, but was left out of the previous news section
5459 (thanks to Dan Barlow)
5460 * SBCL now runs on the Solaris operating system on SPARC architectures
5461 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5462 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5463 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5464 * SPARC backend cleanups, allowing builds of cores optimized for V8
5465 and V9 SPARCS, and also emission of code targeted to a particular
5466 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5468 * SBCL is closer to bootstrapping under CLISP, thanks to various
5469 fixes by Christophe Rhodes.
5470 * The fasl file format has changed again, to allow the compiler's
5471 INFO database to support symbol macros.
5472 * The user manual (in doc/) is formatted into HTML more nicely.
5473 (thanks to coreythomas)
5474 * The system is smarter about SUBTYPEP relationships, especially
5475 those involving NOT types (including types such as ATOM which are
5476 represented internally using NOT types). Thus SUBTYPEP is less
5477 likely to return (VALUES NIL NIL) in general, and in particular
5478 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5480 * The fasl file format has changed again, because the internal
5481 representation of types now includes a new slot to support the new
5482 SUBTYPEP-of-NOT-types logic.
5483 * (not a change in the main branch of SBCL, but a related prototype
5484 which can hopefully be merged into the main branch of SBCL in the
5485 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5486 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5487 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5488 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5489 dispatch macro character combinations. (thanks to Alexey Dejneka)
5490 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5491 that superficially look like logical namestrings correctly.
5492 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5494 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5495 default supplied-p) for &optional and &key arguments. (thanks to
5498 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5499 * incompatible change: The compiler is now less aggressive about
5500 tail call optimization, doing it only when (> SPACE DEBUG) or
5501 (> SPEED DEBUG). (This is an incompatible change because there are
5502 programs which relied on the old CMU-CL-style behavior to optimize
5503 away their unbounded recursion which will now die of stack overflow.)
5504 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5505 for non-GENCGC systems has been increased to 20M (since that
5506 seems much closer to the likely performance optimum for modern
5507 systems than the old 4M value was)
5508 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5509 and *DEBUG-PRINT-LEVEL*
5510 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5511 of CMU CL's support for SPARC, and various endianness and other
5512 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5513 * new syntactic sugar for the Unix command line: --load foo.bar is now
5514 an alternate notation for --eval '(load "foo.bar")'.
5516 ** The system now detects stack overflow and handles it gracefully,
5517 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5518 optimization settings. (This is a good thing in general, and
5519 its introduction in this version should be particularly timely
5520 for anyone whose code fails because of suppression of tail
5522 ** The system now hunts for the C variable "environ" in a more
5523 devious way, to avoid segfaults when the C library version differs
5524 between compile time and run time. (thanks to Christophe Rhodes)
5525 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5526 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5527 ** The compiler no longer issues bogus style warnings for undefined
5528 classes in the same source file as the DEFCLASSes which defined
5529 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5531 ** fixes in CONDITION class precedence list for undefined function
5532 errors (thanks to Alexei Dejneka)
5533 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5534 correctly. (thanks to Dan Barlow)
5535 ** portability fixes aiming at bootstrapping under CLISP (thanks
5536 to Dave McDonald and Christophe Rhodes)
5537 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5538 ** fixes in type translation and and type inference (thanks to
5540 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5541 ** various fixes in the new ports (thanks to Dan Barlow)
5542 * several changes related to debugging:
5543 ** suppression of tail recursion, as noted above
5544 ** stack overflow detection, as noted above
5545 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5546 is now the default. (For some time encapsulation has been more
5547 reliable than the breakpoint-based :ENCAPSULATE NIL
5548 implementation, at least on X86 systems; and I just noticed that
5549 encapsulation also seems closer to the spirit of the ANSI
5552 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5554 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5555 up properly again. (There was a packaging bug in 0.7.0 which
5556 left their definitions in SB-SYS::LOAD-FOREIGN and
5557 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5558 vital for most things which interface to C-level interfaces,
5559 like extensions working with sockets or databases or
5560 Perl-compatible regexes or whatever, and the need to fix
5561 this bug is the main reason that 0.7.1 was released so
5563 ** DEFGENERIC is now choosier about the methods it redefines, so that
5564 reLOADing a previously-LOADed file containing DEFGENERICs does
5565 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5566 cycle now works as it should. (thanks to Alexey Dejneka)
5567 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5568 fixed by Christophe Rhodes. (He actually submitted this patch
5569 months ago, and I delayed until after 0.7.0.)
5570 ** Bug 111 (internal compiler confusion about runtime checks on
5571 FUNCTION types) was fixed by Alexey Dejneka.
5572 * Some internal cleanups (getting rid of variables which aren't
5573 needed now that the byte interpreter is gone) caused the fasl
5574 file format number to change again.
5576 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5577 * major incompatible change: The default fasl file extension, i.e. the
5578 default extension for files produced by COMPILE-FILE, has changed
5579 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5581 ** There are many changes in the implementation of the compiler.
5582 SBCL is now essentially a compiler-only implementation of ANSI
5583 Common Lisp. EVAL still "interprets" a few special cases, but
5584 almost all the interesting cases are handled by creating
5585 a LAMBDA expression, calling COMPILE on it, then calling
5586 FUNCALL on the result.
5587 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5588 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5589 Since the code is newer, there might still be some new bugs
5590 (though not as many as before Martin Atzmueller's fixes:-). But
5591 the new code is substantially simpler and clearer, and hopefully
5592 any remaining bugs will be simpler, less fundamental, and more
5593 fixable then the bugs in the old code.
5594 ** The revised compiler is still a little unsteady on its feet.
5596 *** The debugging information it produces (particularly the names
5597 of FUNCTION objects) is sometimes much less useful than what
5598 the old compiler produced.
5599 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5600 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5601 within a MACROLET) has been temporarily weakened.
5602 ** There are new compiler optimizations for various functions:
5603 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5604 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5605 *** the math functions TRUNCATE, FLOOR, and CEILING
5606 *** the function-of-all-trades COERCE
5607 Mostly these should be transparent, but there's one
5608 potentially-annoying problem (bug 117): when the compiler
5609 inline-expands a function and does type analysis on the result,
5610 it can create control paths which have type mismatches, and
5611 when it can't prove that those control paths aren't taken,
5612 it will issue WARNINGs about the type mismatches. This is
5613 a particular problem in practice for the new sequence functions.
5614 It's not clear how this should be fixed, and for now, a
5615 workaround is given in the entry for 117 in the BUGS file.
5616 ** (Because of the interaction between the two previous items --
5617 occasional inlining problems and new inline expansions -- some
5618 of the new sequence function optimizations won't really kick in
5619 completely until debugging information, and then inlining, are
5620 straightened out in some future version.)
5621 * minor incompatible changes:
5622 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5623 DIRECTORY no longer implicitly promotes NIL slots of its
5624 pathname argument to :WILD. In particular, when you ask for the
5625 contents of a directory (which you used to be able to do without
5626 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5627 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5628 ** changes in behavior that ANSI explicitly defines to be
5629 implementation dependent:
5630 *** The new compiler-only implementation still conforms with ANSI,
5631 but acts a little different than before. Besides the obvious
5632 changes in performance tradeoffs (that the cost per form passed
5633 to EVAL has gone up, and the cost per form executed by EVAL
5634 has gone down), the behavior of the system changes a little
5635 because there are no longer any interpreted function objects.
5636 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5637 e.g. doing COMPILE on the output of interactive DEFUN is
5639 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5641 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5642 has changed from (:CL) to NIL.
5643 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5644 e.g. #\Newline and #\Tab, don't have names specified in the
5645 ANSI Common Lisp standard, is now based on their ASCII symbolic
5646 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5647 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5648 are no longer used for output.
5649 ** changes in internal implementation constants:
5650 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5651 4 million. (If your application spends a lot of time GCing and
5652 you have a lot of RAM, you might want to experiment with
5653 increasing it even more.)
5654 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5655 However, almost all old code should still continue to work without
5656 immediate update, as SB-C-CALL is now a (deprecated) nickname
5658 ** Old operator names in the style DEF-FOO are now deprecated in
5659 favor of new corresponding names DEFINE-FOO, for consistency with
5660 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5661 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5662 internal symbols, but a few supported extensions like
5663 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5664 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5665 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5666 etc. as you get deeper into recursive calls to the debugger
5667 command loop, instead of the old "5]", "5]]", "5]]]"
5668 sequence. (I was motivated to do this when squabbles between
5669 ILISP and SBCL left me very deeply nested in the debugger. In the
5670 short term, this change will probably provoke more ILISP/SBCL
5671 squabbles, but hopefully it will be an improvement in the long run.)
5672 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5673 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5674 function, since declaiming return types involving aliens is
5675 (1) annoyingly messy to do by hand and (2) vital to efficient
5676 compilation of code which calls such functions.
5677 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5678 longer reexported by the SB-EXT package. They're solely useful
5679 for alien code, so it seems more logical that you should get
5680 them from the SB-ALIEN package, not in SB-EXT.
5681 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5682 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5683 features. Instead, the code that they used to control is always
5684 built into the system.
5685 * many other bug fixes
5686 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5687 advantage of the new EVAL-WHEN stuff and to clean them up in
5688 general, and they are now more ANSI-compliant in a number of
5689 ways. Martin Atzmueller is responsible for a lot of this.
5690 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5692 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5693 *** correct ERROR type for various file operations
5694 *** some fixes for Lisp streams
5695 *** DEFMETHOD syntax checking
5696 *** changing old weird representation of debug information as
5697 strings (which, among their other deficiencies, don't transform
5698 correctly when you rename packages, and don't change their
5699 print representation when you change things like *PACKAGE*
5700 and *PRINT-LENGTH*) to symbols and lists of symbols
5701 He also made several improvements and fixed several bugs in DESCRIBE.
5702 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5704 *** misbehavior of WRITE-STRING/WRITE-LINE
5705 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5706 and several other LOOP problems as well
5707 *** DIRECTORY when similar filenames are present
5708 *** DEFGENERIC with :METHOD options
5709 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5710 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5711 *** argument ordering in FIND with :TEST option
5712 *** mishandled package designator argument in APROPOS-LIST
5713 *** various problems in the backquote readmacro
5714 *** a bug in APROPOS
5715 *** probably some others that I'm not describing very well here,
5716 since the CVS log documents them by reference to sbcl-devel
5717 messages, and the SourceForge archives aren't working well.:-(
5718 ** Dan Barlow improved the Alpha port (and is making progress on the
5719 PPC port, for those of you who think different).
5720 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5721 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5722 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5723 continues to work on the SPARC port (for those of you in a position
5724 to look down upon our little PC-compatible boxes from a great height).
5725 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5726 and uses that copy, rather than the current dynamic value, when
5727 it's trying to decide whether to truncate output. Thus e.g.
5728 (let ((*print-lines* 50))
5729 (pprint-logical-block (stream nil)
5731 (let ((*print-lines* 8))
5732 (print (aref possiblybigthings i) stream)))))
5733 should now truncate the logical block only at 50 lines, instead of
5734 often truncating it at 8 lines, as it did before.
5735 * The doc/cmucl/ directory, containing old CMU CL documentation
5736 from the time of the fork, is no longer part of the base system.
5737 SourceForge has shut down its anonymous FTP service, and with it
5738 my original plan for distributing the old CMU CL documentation
5739 there. For now, if you need these files you can download an old
5740 SBCL source release and extract them from it.
5741 * The fasl file version number changed again, for dozens of reasons,
5742 some of which are apparent above.
5744 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5745 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5746 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5747 patch, so that DISASSEMBLE output is much nicer.
5748 * The code in the SB-PROFILE package now seems reasonably stable.
5749 I still haven't decided what the final interface should look like
5750 (I'd like PROFILE to interact cleanly with TRACE, since both
5751 facilities use function encapsulation) but if you have a need
5752 for profiling now, you can probably use it successfully with
5753 the current CMU-CL-style interface.
5754 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5755 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5756 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5757 link now returns the dangling link itself, and for similar
5758 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5759 link itself. (In these cases the old code signalled an error and
5760 looped endlessly, respectively.) Thus, DIRECTORY now works even
5761 in the presence of dangling and cyclic symbolic links.
5762 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5763 is now a supported extension again, since the consensus on
5764 sbcl-devel was that it can be useful for ordinary development
5765 work, not just for debugging SBCL itself.
5766 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5767 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5768 that currently-defined functions might be redefined later with
5769 different return types.
5770 * Hash tables can be printed readably, as inspired by CMU CL code
5771 of Eric Marsden and SBCL code of Martin Atzmueller.
5772 * better error handling in CLOS method combination, thanks to
5773 Martin Atzmueller porting Pierre Mai's CMU CL patches
5774 * more overflow fixes for >16Mbyte I/O buffers
5775 * A bug in READ has been fixed, so that now a single Ctrl-D
5776 character suffices to cause end-of-file on character streams.
5777 In particular, now you only need one Ctrl-D at the command
5778 line (not two) to exit SBCL.
5779 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5781 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5782 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5783 does the right thing.
5784 * The implementation of some type tests, especially for CONDITION
5785 types, is now tidier and maybe faster, due to CMU CL code
5786 originally by Douglas Crosher, ported by Martin Atzmueller.
5787 * Some math functions have been fixed, and there are new
5788 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5789 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5790 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5791 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5792 likely to be built into sbcl-0.7.0.)
5793 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5794 CL, ported to SBCL by Martin Atzmueller)
5795 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5796 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5797 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5798 * There's a new slam.sh hack to shorten the edit/compile/debug
5799 cycle for low-level changes to SBCL itself, and a new
5800 :SB-AFTER-XC-CORE target feature to control the generation of
5801 the after-xc.core file needed by slam.sh.
5802 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5803 COMPILE-FILE is no longer supported, so that now every function
5804 gets an entry point, so that block compilation looks a little
5805 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5806 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5807 returns the number of bytes consed since the system started,
5808 rather than the number consed since the first time the function
5809 was called. (The new definition parallels ANSI functions like
5810 CL:GET-INTERNAL-RUN-TIME.)
5811 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5812 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5813 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5814 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5815 * Fasl file version numbers are now independent of the target CPU,
5816 since historically most system changes which required version
5817 number changes have affected all CPUs equally. Similarly,
5818 the byte fasl file version is now equal to the ordinary
5821 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5822 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5823 is no longer recognized. I apologize for this, because it was
5824 listed in SB-EXT as a supported extension, but I found that
5825 its existing behavior was poorly specified, as well as incorrectly
5826 specified, and it looked like too much of a mess to straighten it
5827 out. I have enough on my hands trying to get ANSI stuff to work..
5828 * many patches ported from CMU CL by Martin Atzmueller, with
5829 half a dozen bug fixes in pretty-printing and the debugger, and
5830 half a dozen others elsewhere
5831 * fixed bug 13: Floating point infinities are now supported again.
5832 They might still be a little bit flaky, but thanks to bug reports
5833 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5834 as flaky as they were.
5835 * The --noprogrammer command line option is now supported. (Its
5836 behavior is slightly different in detail from what the old man
5837 page claimed it would do, but it's still appropriate under the
5838 same circumstances that the man page talks about.)
5839 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5840 are now supported, and enabled by default. Thus, the compiler can
5841 handle many floating point and complex operations much less
5842 inefficiently. (Thus e.g. you can implement a complex FFT
5844 * The compiler now detects type mismatches between DECLAIM FTYPE
5845 and DEFUN better, and implements CHECK-TYPE more correctly, and
5846 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5847 thanks to patches from Martin Atzmueller.
5848 * various fixes to make the cross-compiler more portable to
5849 ANSI-conforming-but-different cross-compilation hosts (notably
5850 Lispworks for Windows, following bug reports from Arthur Lemmens)
5851 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5852 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5853 fixed thanks to Pierre Mai's CMU CL patches.
5854 * fixes to keep the system from overflowing internal counters when
5855 it tries to use i/o buffers larger than 16M bytes
5856 * fixed bug 45a: Various internal functions required to support
5857 complex special functions have been merged from CMU CL sources.
5858 (When I was first setting up SBCL, I misunderstood a compile-time
5859 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5860 * improved support for type intersection and union, fixing bug 12
5861 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5862 more obscure bugs as well
5863 * some steps toward byte-compiling non-performance-critical
5864 parts of the system, courtesy of patches from Martin Atzmueller
5865 * Christophe Rhodes has made some debian packages of sbcl at
5866 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5867 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5868 stable, but are nonetheless usable. When he's ready, I'd be happy
5869 to add them to the SourceForge "File Releases" section. (And if
5870 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5871 * new fasl file format version number (because of changes in
5872 internal representation of (OR ..) types to accommodate the new
5873 support for (AND ..) types, among other things)
5875 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5876 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5878 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5880 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5881 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5882 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5883 * DESCRIBE now works on structure objects again.
5884 * Most function call argument type mismatches are now handled as
5885 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5886 know whether the function will be redefined before the call is
5887 executed. (The compiler could flag local calls with full WARNINGs,
5888 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5889 it doesn't keep track of enough information to know whether calls
5890 are local in this sense.)
5891 * Compiler output is now more verbose, with messages truncated
5892 later than before. (There should be some supported way for users
5893 to override the default verbosity, but I haven't decided how to
5894 provide it yet, so this behavior is still controlled by the internal
5895 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5896 src/compiler/ir1util.lisp.)
5897 * Fasl file format version numbers have increased again, because
5898 support for the Gray streams extension changes the layout of the
5899 system's STREAM objects.
5900 * The Gray subclassable streams extension now works, thanks to a
5901 patch from Martin Atzmueller.
5902 * The full LOAD-FOREIGN extension (not just the primitive
5903 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5904 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5905 but like most other programs, it defaults to copying the Unix
5906 environment from the original process instead of starting the
5907 new process in an empty environment.
5908 * Extensions which manipulate the Unix environment now support
5909 an :ENVIRONMENT keyword option which doesn't smash case or
5910 do other bad things. The CMU-CL-style :ENV option is retained
5911 for porting convenience.
5912 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5913 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5915 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5917 * A patch from Martin Atzmueller seems to have solved the SIGINT
5918 problem, and as far as we know, signal-handling now works cleanly.
5919 (If you find any new bugs, please report them!)
5920 * The system no longer defaults Lisp source file names to types
5921 ".l", ".cl", or ".lsp", but only to ".lisp".
5922 * The compiler no longer uses special default file extensions for
5923 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5924 seems to expect a single default extension for all compiled code,
5925 and there's no compelling reason to try to stretch the standard
5926 to allow two different extensions.) Instead, byte-compiled files
5927 default to the same extension as native-compiled files.
5928 * Fasl file format version numbers have increased again, because
5929 a rearrangement of internal implementation packages made some
5930 dumped symbols in old fasl files unreadable in new cores.
5931 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5932 many fewer weird special cases.
5933 * Bug #17 (differing COMPILE-FILE behavior between logical and
5934 physical pathnames) has been fixed, and some related misbehavior too,
5935 thanks to a patch from Martin Atzmueller.
5936 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5937 by Tim Moore, ported to SBCL by Martin Atzmueller.
5938 * Martin Atzmueller fixed several filesystem-related problems,
5939 including bug #36, in part by porting CMU CL patches, which were
5940 written in part by Paul Werkowski.
5941 * More compiler warnings in src/runtime/ are gone, thanks to
5942 more patches from Martin Atzmueller.
5943 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5946 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5948 * DESCRIBE now works on CONDITION objects.
5949 * The debugger now handles errors which arise when trying to print
5950 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5952 * The build system now uses an additional file, customize-target-features.lisp,
5953 to allow local modifications to the target *FEATURES* list. (The point of
5954 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5955 debugging features enabled, without having to worry about propagating it
5956 into everyone's system when I do a "cvs update".) When no
5957 customize-target-features.lisp file exists, the target *FEATURES* list
5958 should be constructed the same way as before.
5959 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5960 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5961 warn about behavior which is undefined under the ANSI spec. Note: This
5962 is specified by ANSI, but it's not very popular with programmers.
5963 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5964 macro in the SBCL sources for an example of a workaround which you
5965 might use to make portable ANSI-standard code which does what you want.
5966 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5967 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5968 when it's used as a non-toplevel form. (This is required in order
5969 to implement the DEFCONSTANT-EQX macro.)
5970 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5971 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5972 funny things, due to bugs in the implementation of EVAL-WHEN
5973 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5974 non-toplevel DEFCONSTANTs are uncommon.)
5975 * The core file version number and fasl file version number have been
5976 incremented, because the old noncompliant DEFCONSTANT behavior involved
5977 calling functions which no longer exist, and because I also took the
5978 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5979 * fixed bug 1 (error handling before read-eval-print loop starts), and
5980 redid debugger restarts and related debugger commands somewhat while
5982 ** The QUIT debugger command is gone, since it did something
5983 rather different than the SB-EXT:QUIT command, and since it never
5984 worked properly outside the main toplevel read/eval/print loop.
5985 Invoking the new TOPLEVEL restart provides the same functionality.
5986 ** The GO debugger command is also gone, since you can just invoke
5987 the CONTINUE restart directly instead.
5988 ** The TOP debugger command is also gone, since it's redundant with the
5989 FRAME 0 command, and since it interfered with abbreviations for the
5991 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5993 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5994 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5995 some porting work by Martin Atzmueller)
5996 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5997 with a boatload of patches which he ported to SBCL. Now that those
5999 ** The system tries to make sure that its low-priority messages
6000 are prefixed by semicolons, to help people who like to use
6001 syntax highlighting in their ILISP buffer. (This patch
6002 was originally due to Raymond Toy.)
6003 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6004 patches originally written by Raymond Toy.
6005 ** The compiler understands coercion between single-value and
6006 multiple-VALUES type expressions better, getting rid of some very
6007 weird behavior, thanks to patches originally by Robert MacLachlan
6008 and Douglas Crosher.
6009 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6010 lambda lists, thanks to a patch originally by Pierre Mai.
6011 ** The system no longer bogusly warns about "abbreviated type
6013 ** The compiler gets less confused by inlining and RETURN-FROM,
6014 thanks to some patches originally by Tim Moore.
6015 ** The system no longer hangs when dumping circular lists to fasl
6016 files, thanks to a patch originally from Douglas Crosher.
6017 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6018 undefined function error.
6019 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6020 in structure slot initforms) for now, documented workaround instead:-|
6021 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6022 * fixed bug 5: added stubs for various Gray stream functions called
6023 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6024 installed, at least appropriate type errors are generated
6025 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6026 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6027 consistently in DEFMETHOD forms.
6028 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6029 it doesn't seem to affect SBCL after all
6030 * The C runtime system now builds with better optimization and many
6031 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6033 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6035 * The system is now under CVS at SourceForge (instead of the
6036 CVS repository on my home machine).
6037 * The new signal handling code has been tweaked to treat register
6038 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6039 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6040 downstream, e.g. in debug-int.lisp, has implicit dependencies
6041 on the unsignedness of integer representation of machine words,
6042 and that caused the system to bomb out with infinite regress
6043 when trying to recover from type errors involving signed values,
6044 e.g. (BUTLAST '(1 2 3) -1).)
6045 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6046 (This was one of the bugs Peter Van Eynde reported back in July.)
6047 * The system now uses code inspired by Colin Walters' O(N)
6048 implementation of MAP (from the cmucl-imp@cons.org mailing
6049 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6050 inline the MAP operation, and there is more than one
6051 sequence argument to the MAP call (so that it can't just
6052 do ETYPECASE once and for all based on the type of the
6053 single sequence argument). (The old non-inline implementation
6054 of the general M-argument sequence-of-length-N case required
6055 O(M*N*N) time when any of the sequence arguments were LISTs.)
6056 * The QUIT :UNIX-CODE keyword argument has been renamed to
6057 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6058 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6060 * Raymond Wiker's patches to port dynamic loading from Linux to
6061 FreeBSD have been added.
6062 * The BUGS file is now more nearly up to date, thanks in large part
6063 to Martin Atzmueller's review of it.
6064 * The debugger now flushes standard output streams before it begins
6065 its output ("debugger invoked" and so forth).
6066 * The core version number and fasl file version number have both
6067 been incremented, because of incompatible changes in the layout
6069 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6070 used to not be called for a saved Lisp image.)
6071 * Martin Atzmueller's version of a patch to fix a compiler crash,
6072 as posted on sbcl-devel 13 September 2000, has been installed.
6073 * Instead of installing Martin Atzmueller's patch for the
6074 compiler transform for SUBSEQ, I deleted the compiler transform,
6075 and transforms for some similar consing operations.
6076 * A bug in signal handling which kept TRACE from working on OpenBSD
6078 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6079 away by constant folding
6080 * The system now defines its address space constants in one place
6081 (in the Lisp sources), and propagates them automatically elsewhere
6082 (through GENESIS and the sbcl.h file). Therefore, patching the
6083 address map is less unnecessarily tedious and error-prone. The
6084 Lisp names of address space constants have also been systematized.
6085 * CVS tags like dollar-Header-dollar have been removed from
6086 the sources, because they have never saved me trouble and
6087 they've been source of trouble working with patches and other
6088 diff-related operations.
6089 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6090 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6092 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6094 * The system has been ported to OpenBSD.
6095 * The system now compiles with a simple "sh make.sh" on the systems
6096 that it's supported on. I.e., now you no longer need to tweak
6097 text in the target-features.lisp-expr and symlinks in src/runtime/
6098 by hand, the make.sh takes care of it for you.
6099 * The system is no longer so grossly inefficient when compiling code
6100 involving vectors implemented as general (not simple) vectors (VECTOR T),
6101 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6102 which dares to use the various sequence functions on non-simple
6103 vectors, takes less of a performance hit.
6104 * There is now a primitive type predicate VECTOR-T-P
6105 to test for the (VECTOR T) type, so that e.g.
6106 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6107 can now be compiled with some semblance of efficiency. (The old code
6108 turned the type declaration into a full call to %TYPEP at runtime!)
6109 * AREF on (VECTOR T) is still not fast, since it's still compiled
6110 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6111 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6112 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6113 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6114 without making full calls to SUBTYPEP at runtime.
6115 (Some analogous efficiency issues for non-simple vectors specialized to
6116 element types other than T, or for non-simple multidimensional arrays,
6117 have not been addressed. They could almost certainly be handled the
6118 same way if anyone is motivated to do so.)
6119 * The changes in array handling break binary compatibility, so
6120 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6121 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6122 instead of (VALUES T T).
6123 * By following the instructions that Dan Barlow posted to sbcl-devel
6124 on 2 July 2000, I was able to enable primitive dynamic object
6125 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6126 functionality is not implemented (since it calls ld to resolve
6127 library references automatically, requiring RUN-PROGRAM for its
6128 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6129 try to resolve library references) is now supported.
6130 * The system now flushes the standard output streams when it terminates,
6131 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6132 them at several other probably-convenient times, e.g. in each pass of
6133 the toplevel read-eval-print loop, and after evaluating a form given
6134 as an "--eval" command-line option. (These changes were motivated by a
6135 discussion of stream flushing issues on cmucl-imp in August 2000.)
6136 * The source transform for TYPEP of array types no longer assumes
6137 that an array whose element type is a not-yet-defined type
6138 is implemented as an array of T, but instead punts, so that the
6139 type will be interpreted at runtime.
6140 * There is now some support for cross-compiling in make.sh: each of
6141 the phases of make.sh has its own script. (This should be transparent
6142 to people doing ordinary, non-cross-compile builds.)
6143 * Since my laptop doesn't have hundreds of megabytes of memory like
6144 my desktop machine, I became more motivated to do some items on
6145 my to-do list in order to reduce the size of the system a little:
6146 ** Arrange for various needed-only-at-cold-init things to be
6147 uninterned after cold init. To support this, those things have
6148 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6149 symbols with such names are now uninterned after cold init).
6150 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6151 fasl files for cold load.
6152 ** Remove the old compiler structure pooling code (which used to
6153 be conditional on the target feature :SB-ALLOC) completely.
6154 ** Redo the representation of some data in cold init to be more compact.
6155 (I also looked into supporting byte compiled code at bootstrap time,
6156 which would probably reduce the size of the system a lot, but that
6157 looked too complicated, so I punted for now.)
6158 * The maximum signal nesting depth in the src/runtime/ support code has
6159 been reduced from 4096 to 256. (I don't know any reason for the very
6160 large old value. If the new smaller value turns out to break something,
6161 I'll probably just bump it back up.)
6162 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6164 * Many, many bugs reported by Peter Van Eynde have been added to
6165 the BUGS list; some have even been fixed.
6166 * While enabling dynamic object file loading, I tried to make the
6167 code easier to understand, renaming various functions and variables
6168 with less ambiguous names, and changing some function calling
6169 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6170 * While trying to figure out how to do the OpenBSD port, I tried to
6171 clean up some of the code in src/runtime/. In particular, I dropped
6172 support for non-POSIX signal handling, added various comments,
6173 tweaked the code to reduce the number of compilation warnings, and
6174 renamed some files to increase consistency.
6175 * To support the new automatic configuration functionality in make.sh,
6176 the source file target-features.lisp-expr has been replaced with the
6177 source file base-target-features.lisp-expr and the machine-generated
6178 file local-target-features.lisp-expr.
6179 * fixed a stupid quoting error in make.sh so that using CMU CL
6180 "lisp -batch" as cross-compilation host works again
6182 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6184 * DESCRIBE no longer tries to call itself recursively to describe
6185 bound/fbound values, so that it no longer fails on symbols which are
6186 bound to themselves (like keywords, T, and NIL).
6187 * DESCRIBE now works on generic functions.
6188 * The printer now prints less-screwed-up representations of closures
6189 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6190 * A private symbol is used instead of the :EMPTY keyword previously
6191 used to mark empty slots in hash tables. Thus
6192 (DEFVAR *HT* (MAKE-HASH-TABLE))
6193 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6194 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6195 now does what ANSI says that it should. (You can still get
6196 similar noncompliant behavior if bang on the hash table
6197 implementation with all the symbols you get back from
6198 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6199 This breaks binary compatibility, since tests for equality to
6200 :EMPTY are wired into things like the macroexpansion of
6201 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6203 * There's now a minimal placeholder implementation for CL:STEP,
6204 as required by ANSI.
6205 * An obscure bug in the interaction of the normal compiler, the byte
6206 compiler, inlining, and structure predicates has been patched
6207 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6208 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6210 * Missing ordinary arguments in a macro call are now detected even
6211 when the macro lambda list contains &KEY or &REST.
6212 * The debugger no longer complains about encountering the top of the
6213 stack when you type "FRAME 0" to explicitly instruct it to go to
6214 the top of the stack. And it now prints the frame you request even
6215 if it's the current frame (instead of saying "You are here.").
6216 * As specified by ANSI, the system now always prints keywords
6217 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6219 * The default initial SIZE of HASH-TABLEs is now smaller.
6220 * Type information from CLOS class dispatch is now propagated
6221 into DEFMETHOD bodies, so that e.g.
6222 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6224 is now basically equivalent to
6225 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6226 (DECLARE (TYPE SINGLE-FLOAT X))
6228 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6229 operation, without having to do run-time type dispatch.
6230 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6231 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6232 * Since I don't seem to be making big file reorganizations very often
6233 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6234 is overflowing my ability to conveniently back them up), I've finally
6235 checked the system into CVS. (The CVS repository is on my home system,
6236 not at SourceForge -- putting it on SourceForge might come later.)
6237 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6238 high-level GC-NOTIFY-FOO functions send their output. (There's
6239 still very little control of where low-level verbose GC functions
6240 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6241 less than it used to -- the GC-NOTIFY-FOO functions are now under
6242 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6243 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6244 in only one place in the source code, and propagates it automatically
6245 everywhere that it's needed. Thus e.g. when I bump the version from
6246 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6247 * The C source files now include boilerplate legalese and documentation
6248 at the head of each file (just as the Lisp source files already did).
6249 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6250 to his page will be replaced with a link to his new CLiki service.
6252 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6254 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6255 * The build process now looks for GNU make under the default name "gmake",
6256 instead of "make" as it used to. If GNU make is not available as "gmake"
6257 on your system, you can change this default behavior by setting the
6258 GNUMAKE environment variable.
6259 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6260 can build without error under CMU CL.
6262 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6264 * There is now a partial SBCL user manual (with some new text and some
6265 text cribbed from the CMU CL manual).
6266 * The beginnings of a profiler have been added (starting with the
6267 CMU CL profiler and simplifying and cleaning up). Eventually the
6268 main interface should be through the TRACE macro, but for now,
6269 it's still accessed through vaguely CMU-CL-style functions and macros
6270 exported from the package SB-PROFILE.
6271 * Some problems left over from porting CMU CL to the new
6272 cross-compilation bootstrap process have been cleaned up:
6273 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6274 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6275 part when getting rid of the compiler *BACKEND* stuff.)
6276 ** The value of *NULL-TYPE* was screwed up, because it was
6277 being initialized before the type system knew the final
6278 definition of the 'NULL type. This screwed up several key
6279 optimizations in the compiler, causing inefficiency in all sorts
6280 of places. (I found it because I wanted to understand why
6281 GET-INTERNAL-RUN-TIME was consing.)
6282 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6283 PROCLAIM FTYPE information. Unfortunately this broke binary
6284 compatibility again, since now the forms output by DEFGENERIC
6285 to refer to functions which didn't exist in 0.6.3.
6286 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6287 can use the new (as of 0.6.3) transform for SOME into MAP into
6289 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6290 values to (INTEGER 0 1000000), so that the time code will no longer
6291 occasionally get blown up by Linux returning 1000000 microseconds
6292 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6293 its output conform to the ANSI spec. (Alas, this makes its output
6294 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6295 * A full call to MAP NIL with a single sequence argument no longer conses.
6296 * fixes to problems pointed out by Martin Atzmueller:
6297 * The manual page no longer talks about multiprocessing as though
6298 it were currently supported.
6299 * The ILISP support patches have been removed from the distribution,
6300 because as of version 5.10.1, ILISP now supports SBCL without us
6301 having to maintain patches.
6302 * added a modified version of Raymond Toy's recent CMU CL patch for
6303 EQUALP comparison of HASH-TABLE
6305 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6307 * The system still can't cross-compile itself with
6308 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6309 entails), but at least it can compile more of itself that way
6310 than it used to be able to, and various buglets which were uncovered
6311 by trying to cross-compile itself that way have now been fixed.
6312 * This release breaks binary compatibility again. This time
6313 at least I've incremented the FASL file format version to 2, so that the
6314 problem can be detected reliably instead of just causing weird errors.
6315 * various new style warnings:
6316 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6317 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6318 ** using the lexical binding of a variable named in the *FOO* style
6319 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6320 as specified by ANSI.
6321 * *RANDOM-STATE* is no longer automatically initialized from
6322 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6323 default behavior of the system is to repeat its behavior every time
6324 it's run. If you'd like to change this behavior, you can always
6325 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6326 old convention there was no comparably easy way to get the system to
6327 repeat its behavior every time it was run.
6328 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6329 FTYPE declarations has been removed, in favor of their ANSI
6330 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6331 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6332 the types of their sequence arguments can be determined at compile time.
6333 This is done through a new open code expansion for MAP which eliminates
6334 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6335 argument types can be determined at compile time.
6336 * The optimizer now transforms COERCE into an identity operation when it
6337 can prove that the coerced object is already of the correct type. (This
6338 can be a win for machine generated code, including the output of other
6339 optimization transforms, such as the MAP transform above.)
6340 * Credit information has been moved from source file headers into CREDITS.
6341 * Source file headers have been made more standard.
6342 * The CASE macro now compiles without complaining even when it has
6345 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6347 * (Note that the way that the PCL macroexpansions were rewritten
6348 to accommodate the change in DEFGENERIC below breaks binary
6349 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6350 not run under sbcl-0.6.2. Once we get out of alpha releases,
6351 i.e. hit release 1.0.0, we'll probably try to maintain binary
6352 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6353 and sbcl-1.4.4. Until then, however, it might be fairly common
6354 for maintenance releases to break binary compatibility.)
6355 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6357 * The reporting of unhandled signals has been changed to print some
6358 explanatory text as well as the report form. (Previously only
6359 the report form was printed.)
6360 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6361 it defines, so that the compiler no longer issues undefined function
6362 warnings for compiled-but-not-yet-loaded generic functions.
6363 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6364 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6365 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6366 section of the ANSI spec are supported.
6367 * The "" nickname for the "KEYWORD" package has been removed.
6368 The reader still handles symbol tokens which begin with a package marker
6369 as keywords, but it doesn't expose its mechanism for doing so in the
6370 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6371 * The system now issues STYLE-WARNINGs for contradictory TYPE
6372 proclamations. (Warnings for contradictory FTYPE proclamations would
6373 be nice too, but those can't be done usefully unless the type system
6374 is made smarter about FUNCTION types.)
6375 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6376 systematized, so that "*target-*.lisp is supposed to exist only on the
6377 target and imply that there's a related file which exists on the
6378 host, and *host-*.lisp is supposed to exist only on the host and imply
6379 that there's a related file which exists on the target. This involves a
6380 lot of renaming. Hopefully the acute confusion caused by the renaming
6381 will be justified by the reduction in chronic confusion..
6382 ** runtime-type.lisp -> early-target-type.lisp
6383 ** target-type.lisp -> late-target-type.lisp
6384 ** early-host-format.lisp -> early-format.lisp
6385 ** late-host-format.lisp -> late-format.lisp
6386 ** host-error.lisp -> misc-error.lisp
6387 ** early-error.lisp -> early-target-error.lisp
6388 ** late-error.lisp -> late-target-error.lisp
6389 ** host-defboot.lisp -> early-defboot.lisp
6390 ** code/misc.lisp -> code/target-misc.lisp
6391 ** code/host-misc.lisp -> code/misc.lisp
6392 ** code/numbers.lisp -> code/target-numbers.lisp
6393 ** code/early-numbers.lisp -> numbers.lisp
6394 ** early-host-type.lisp -> early-type.lisp
6395 ** late-host-type.lisp -> late-type.lisp
6396 ** host-typep.lisp -> typep.lisp
6397 ** load.lisp -> target-load.lisp
6398 ** host-load.lisp -> load.lisp
6399 ** host-disassem.lisp -> disassem.lisp
6400 ** host-insts.lisp -> insts.lisp
6401 ** byte-comp.lisp -> target-byte-comp.lisp
6402 ** host-byte-comp.lisp -> byte-comp.lisp
6403 ** host-signal.lisp -> signal.lisp
6404 ** host-defstruct.lisp -> defstruct.lisp
6405 ** late-target-type.lisp -> deftypes-for-target.lisp
6406 Furthermore, several other previously target-only files foo.lisp (e.g.
6407 hash-table.lisp and random.lisp) have been split into a target-and-host
6408 foo.lisp file and a target-only target-foo.lisp file, with their key type
6409 definitions in the target-and-host part, so that the cross-compiler will
6410 know more about target types.
6411 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6412 gone away. In their place are various *BACKEND-FOO* variables
6413 corresponding to the slots of the old structure.
6414 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6415 into the target SBCL has been fixed.
6416 * The chill.lisp system for loading cold code into a running SBCL
6418 * Support for the CMU CL "scavenger hook" extension has been removed.
6419 (It was undocumented and unused in the CMU CL sources that SBCL was
6420 derived from, and stale in sbcl-0.6.1.)
6421 * Various errors in the cross-compiler type system were detected
6422 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6423 (enabling various consistency checks). Many of them were fixed,
6424 but some hard problems remain, so the compiler is back to
6425 running without *TYPE-SYSTEM-INITIALIZED* for now.
6426 * As part of the cross-compiler type system cleanup, I implemented
6427 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6428 * I have started adding UNCROSS calls throughout the type system
6429 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6430 on cross-compiler input files will be able to go away, and various
6432 * CONSTANTP now returns true for quoted forms (as explicitly required
6435 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6437 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6438 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6439 (MAKE-LIST -1). In the longer term, it ought to become true
6440 that declarations are assertions even at SAFETY 1. For now, it's not
6441 quite true even at SAFETY 3, but it's at least more nearly true..
6442 (Note that this change seems to increases the size of the system by
6443 O(5%) and to decrease the speed of the compiler by 20% or more.)
6444 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6445 for the problem of printing dozens of lines of distracting information
6446 about low-level system machinery as part of the top stack frame
6447 on entry to the debugger when an undefined function was called.
6448 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6449 is not reset to COMMON-LISP-USER.
6450 * Compilation of stuff related to dyncount.lisp has been made conditional
6451 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6452 smaller. The various dyncount-related symbols have been moved into
6453 a new "SB-DYNCOUNT" package.
6454 * tty-inspect.lisp has been renamed to inspect.lisp.
6455 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6456 feature has gone away. (When we eventually port to other flavors of
6457 libc and/or Unix, we'll try to make the differences between flavors
6458 invisible at the user level.)
6459 * Various other *FEATURES* tags, and/or their associated conditionals,
6460 have been removed if obsolescent, or given better documentation, or
6461 sometimes given more-mnemonic names.
6463 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6465 * tidied up "make.sh" script
6466 * tidied up system directory structure
6467 * better "clean.sh" behavior
6468 * added doc/FOR-CMUCL-DEVELOPERS
6469 * many many small tweaks to output format, e.g. removing possibly-confusing
6470 trailing #\. character in DESCRIBE-INSTANCE
6471 * (EQUALP #\A 'A) no longer signals an error.
6472 * new hashing code, including EQUALP hashing
6473 * tidied up Lisp initialization and toplevel
6474 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6475 * command line argument processing
6476 * added POSIX-GETENV function to deal with Unix-ish environment variables
6477 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6478 terminating SBCL on EOF
6479 * non-verbose GC by default
6480 * There is no more "sbcl" shell script; the sbcl file is now the C
6481 runtime executable (just like CMU CL).
6482 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6484 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6485 symbol and package information as Lisp native symbol and package objects
6486 instead of strings naming symbols and strings naming packages. This way,
6487 whenever packages are renamed (as in warm init), debug information is
6488 transformed along with everything else.
6489 * tweaked the optimization policy declarations which control the building
6490 of SBCL itself. Now, among other things, the system no longer saves
6491 source location debugging information. (This helps two problems at once
6492 by reducing SBCL size and by keeping SBCL from trying to look for its
6493 sources -- which may not exist -- when reporting errors.)
6494 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6495 debugging and testing purposes
6496 * cleaned up printing, making the printer call PRINT-OBJECT for
6497 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6498 methods, giving nearly-ANSI behavior
6499 * converted almost all special variables to use *FOO* naming convention
6500 * deleted PARSE-TIME functionality, since it can be done portably
6501 * moved some files out of cold init into warm init
6502 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6504 * regularized formatting of source files
6505 * added an install.sh script
6506 * fixed ridiculous memory usage of cross-compiler by making
6507 compiler/alloc.lisp not try to do pooling unless it can hook
6508 itself into the GC of the cross-compilation host. Now the system
6509 builds nicely on my old laptop.
6510 * added :SB-ALLOC in target-features.lisp-expr
6511 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6512 was not implemented)
6513 * re-did condition handling and note reporting in the compiler. Notes
6514 are no longer handled by signalling conditions. Style warnings
6515 and warnings are handled more correctly and reported in such a way
6516 that it's easy to find one or the other in your output (so that you
6517 can e.g. figure out which of many problems caused COMPILE-FILE to
6519 * changed the severity of several compiler warnings from full WARNING
6520 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6521 compiler note reporting so that it doesn't use the condition system
6522 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6523 COMPILE-FILE command)
6524 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6525 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6526 no longer supported, since their implementation was deeply intertwingled
6527 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6528 * removed bogus "support" for compiler macros named (SETF FOO), and
6529 removed the compiler macro for SETF INFO (but only after making a fool
6530 of myself on the cmucl-imp mailing list by posting a bogus patch for
6531 DEFINE-COMPILER-MACRO..)
6532 * Compiled files containing forms which have side effects on the Lisp
6533 reader (such as DEFPACKAGE forms) are now handled more correctly.
6534 (Compiler queuing of top level lambdas has been suppressed by setting
6535 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6536 * deleted various currently-unused source files, e.g. gengc.lisp. They
6537 may be added back at some point e.g. when porting to other architectures,
6538 but until they are it's distracting to distribute them and to try to
6540 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6541 there were so many of them they're just distractions, and UNCROSS is
6542 known to be able to handle the current sources
6543 * moved PROFILE functionality into TRACE, so that it will be clear
6544 how the wrapping and unwrapping of functions when you profile them
6545 interacts with the wrapping and unwrapping of functions when you
6546 trace them. (Actually, the functionality isn't there yet, but at least
6547 the interface specification is there. Hopefully, the functionality will
6548 arrive with some future maintenance release.)
6549 * removed host-oops.lisp
6550 * changed signature of QUIT function to allow UNIX-CODE argument
6551 * fixed READ-SEQUENCE bug
6552 * tweaked verbose GC output so that it looks more like the progress
6553 output that ANSI specifies for functions like LOAD
6554 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6555 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob