1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.56:
3 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
4 main entry point, SB-EXT:QUIT is deprecated.
5 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
6 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
7 * enhancement: FASL loading no longer grabs the world-lock.
8 * enhancement: GENCGC reclaims space more aggressively when objects being
9 allocated are a large fraction of the total available heap space.
11 * enhancement: backtraces show the correct number of arguments for frames
12 called with too many arguments.
13 * optimization: fewer uses of full calls to signed modular functions.
15 * optimization: typechecking alien values is typically 5 x faster.
16 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
18 * bug fix: fixed disassembly of some SSE instructions on x86-64.
19 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
20 OPEN. (lp#969352, thanks to Kambiz Darabi)
21 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
23 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
24 classoid even if X was not the proper name of the class. (lp#941102)
25 * bug fix: declaration leakage between lexical environments due to careless
26 use of NCONC in MAKE-LEXENV. (lp#924276)
27 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
28 *default-pathname-defaults* contains NAME or TYPE components.
29 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
30 from CL package, e.g. (loop . 10).
31 * bug fix: run-program with existent or non-existent files for :output or
32 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
33 returns NIL instead of signalling an obscure error.
34 * bug fix: fix miscompilation of some logand forms with large constant
35 arguments. (lp#974406)
36 * bug fix: account for funcallable-instance objects properly in ROOM.
37 * bug fix: incorrect octets reported for c-string decoding errors.
39 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
41 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
42 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
43 allowing faster release of memory back to the OS. (lp#991293)
44 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
45 existing deadline for the dynamic scope of its body.
47 ** improved docstrings: REPLACE (lp#965592)
49 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
50 * bug fix: fix copy-structure. When copying from stack to heap, garbage
51 could end up in the heap making GC unhappy.
52 (Thanks to James Knight, lp#911027)
54 ** SBCL can now be built using Clang.
55 ** ASDF has been updated 2.20.
56 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
57 * bug fix: don't complain about a too-hairy lexical environment for inlining
58 when the function has never been requested for inlining. (lp#963530)
60 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
61 * enhancements to building SBCL using make.sh:
62 ** --fancy can be specified to enable all supported feature enhancements.
63 ** --with-<feature> and --without-<feature> can be used to specify
64 which features to build with.
65 ** --arch option can be used to specify the architecture to build for.
66 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
67 full-blows cross-compilation.)
68 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
69 which allows specifying name of the default interning package for the
71 * enhancement: when *READ-EVAL* is true, arrays with element type other than
72 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
73 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
74 null alien when malloc() fails. (lp#891268)
75 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
76 conditions can be conveniently accessed through function with the same
77 name, analogously to CONTINUE.
78 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
79 from the printer by type, causing an error marker to be printed instead.
80 (Thanks to Attila Lendvai)
81 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
82 generally behave better when errors occur during printing.
83 * enhancement: the test runner now takes a --report-skipped-tests argument
84 to report the individual tests skipped as well as the number of skipped
86 * enhancement: undefined functions now appear in backtraces as ("undefined
87 function") instead of ("bogus stack frame") on x86oids.
88 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
89 deadlock errors are reported in an easier-to-decipher manner.
90 * enhancement: DESCRIBE on type designators reports the expansion in more
92 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
93 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
94 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
95 * enhancement: better disassembly of segment-prefixes on x86 and other
96 instruction prefixes (e.g. LOCK) on x86 and x86-64.
97 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
98 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
99 * optimization: SUBSEQ on vectors of unknown element type is substantially
101 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
102 be stack-allocated. (lp#902351)
103 * optimization: the compiler is smarter about representation selection for
104 floating point constants used in full calls.
105 * optimization: the compiler no longer refuses to coerce large fixnums to
106 single floats inline, except on x86 where this limitation is still
108 * bug fix: deadlock detection could report the same deadlock twice, for
109 two different threads. Now a single deadlock is reported exactly once.
110 * bug fix: interval-arithmetic division during type derivation did not
111 account for signed zeros.
112 * bug fix: compiler error when typechecking a call to a function with
113 non-constant keyword arguments.
114 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
115 * bug fix: condition slot accessors no longer cause undefined function
116 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
117 form that defines them. (lp#896379)
118 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
120 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
121 bogusly report NIL, T.
122 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
123 required arguments ignored and performed assignments to others.
125 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
126 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
127 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
128 * bug fix: redefining a function whose previous definition contained an
129 unknown type no longer causes a style-warning. (lp#806243)
130 * bug fix: undefined functions now appear in backtraces as ("undefined
131 function") instead of ("bogus stack frame") on non-x86oids.
132 * bug fix: backtraces are no longer cut off at ("undefined function") when
133 called under certain circumstances (involving a caller-allocated stack
135 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
136 systems. (regression since 1.0.53)
137 * bug fix: GC deadlocks from dladdr() on certain platforms.
138 * bug fix: broken standard streams no longer automatically cause recursive
139 errors on debugger entry.
140 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
141 (regression since 1.0.53)
142 * bug fix: attempts to stack allocate a required argument to a function with
143 an external entry point caused compiler-errors.
144 * bug fix: compiler notes for failed stack allocation for a function argument
145 no longer claim to be unable to stack allocate the function.
146 * bug fix: COERCE now signals a type-error on several coercions to
147 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
148 * bug fix: missing failure-to-stack-allocate compiler notes for some
149 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
150 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
153 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
154 * minor incompatible changes:
155 ** RENAME-FILE on a symbolic links used to rename the linked-to file
157 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
158 directory, but now signal an error instead. Use TRUENAME to resolve the
159 pathname if you wish to delete the linked directory, and DELETE-FILE if
160 you wish to delete the
161 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
162 symbols associated with it will trigger a compile-time warning.
163 * thread-related enhancements:
164 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
165 Many thanks to generous donors!)
166 ** Threading is now more reliable on non-Linux platforms. We still don't
167 consider threads on non-Linux platforms good enough to enable them by
168 default, but they're in a clearly better shape now.
169 ** Deadlines supported now on all platforms.
170 ** All blocking functions in the threading API now have a :TIMEOUT
172 ** Semaphore notification objects have been added to SB-THREAD.
173 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
174 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
175 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
176 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
177 using an API anologous to defining new SETFable places.
178 * GC-related enhancements and bug fixes:
179 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
180 and Gb suffixes. Default is megabytes as before.
181 ** on GENCGC targets, the default dynamic space size is now 512Mb for
182 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
183 exception, defaulting to mere 444Mb to fit under default ulimits.) The
184 new defaults are in place to prevent hitting swap on low-end systems.
185 Use build-time option --dynamic-space-size to build an SBCL with
186 another default, or the runtime option to adjust the size at startup: a
187 good size is at most equal to the amount of physical memory the system
189 ** on GENCGC targets, nursery and generation sizes now default to 5% of
191 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
192 refuses to create SIMPLE-FUN objects.
193 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
195 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
196 validation of pointer objects as GENCGC does, instead of a
197 comparatively weak bounds-check against the heap spaces.
198 * SB-BSD-SOCKETS bug fixes:
199 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
200 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
201 systems with getaddrinfo().
202 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
203 safe outside systems with getaddrinfo().
204 * enhancement: ASDF has been updated 2.019.
205 * enhancement: special-case TCO prevention for functions which never return
206 extended to untrusted types, keeping one more frame's worth of debug
207 information around in many cases.
208 * enhancement: debug-names of anonymous and local function are more
209 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
210 * enhancement: on win32, ABS of complex floats guards better against
211 overflows. (lp#888410)
212 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
213 process exiting with code 1. (lp#676987)
214 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
215 the system where on the filesystem the SBCL sources themselves are
216 located. (Thanks to Zach Beane)
217 * enhancement: the compiler is now able to derive tighter bounds for
218 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
219 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
220 correctly, even on wide-fixnum builds. (lp#887220)
221 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
222 resolved to directories.
223 * bug fix: type mismatch when assigning to lexical variables no longer
224 result in fasl-dumping internal type objects. (lp#890750)
225 * bug fix: type mismatch on (SETF AREF) and function return values no
226 longer result in fasl-dumping internal type objects.
227 * bug fix: With several combinations of argument types, for example (EXPT
228 <integer> <(complex double)>), EXPT now uses double-precision throughout
229 instead of partially calculating only to single-precision. (lp#741564;
230 thanks to Lutz Euler)
231 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
232 objects when interrupted by GC on PPC.
234 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
235 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
236 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
237 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
238 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
239 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
240 targets is now 63 bits (up from 61).
241 * enhancement: DESCRIBE now reports a lambda-list and source location
242 for complext setf-expanders.
243 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
244 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
245 of multiple-valued places to be set to NIL, instead of signalling an
246 error (per a careful reading of CLHS 5.1.2.3).
247 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
248 * bug fix: repair crash in x86oid darwin signal handling emulation
249 when built with certain compilers.
250 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
251 rotation arguments on x86-64. (lp#882151)
252 * bug fix: low-level control flow optimisations could result in bogus
253 code in functions with tail and non-tail calls to local functions on
255 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
256 to emit literal characters > (code-char 4095), for comparisons with
258 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
259 on 64 bit platforms. (lp#881445)
260 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
261 delete the wrong file when using relative pathnames. (lp#882877)
262 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
263 sequences and :KEY NIL.
265 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
266 * enhancement: ASDF has been updated to version 2.017.
267 * enhancement: the --core command line option now accepts binaries with
269 * enhancement: when built with :sb-core-compression, core files (regular
270 or executable) can be compressed with zlib. Use the :COMPRESSION
271 argument to SAVE-LISP-AND-DIE to specify a compression level.
272 * enhancement: --[no-]merge-core-pages determines whether the runtime
273 hints the operating system that identical core pages between SBCL
274 processes should share the same physical memory. Default is to only
275 enable this for compressed cores.
276 * optimization: SLEEP no longer conses.
277 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
278 or bit-vectors when using the standard pretty-print dispatch table.
279 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
281 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
282 AREF, CHAR, etc. (lp#826971)
283 * bug fix: compiler-errors causes by integer arguments with composed of
284 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
285 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
286 expressions. (lp#770184)
287 * bug fix: complex single float literals are correctly aligned when used
288 as arguments of arithmetic operators.
289 * bug fix: on 32-bit platforms, rounding of double floats larger than a
290 fixnum is correct. (reported by Peter Keller)
291 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
292 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
294 * bug fix: redefining classes such that slots with custom allocation are
295 added or removed works again.
297 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
298 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
299 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
300 MAKE-SOCKET-STREAM if using SERVE-EVENT.
301 * enhancement: added support for socket keepalive timeout intervals
302 and probe counts on Linux.
303 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
304 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
305 * enhancement: added new toplevel options --quit and --non-interactive
307 * enhancement: the Windows port of SBCL now builds and runs on Wine
308 (thanks to Anton Kovalenko).
309 * enhancement: more, and more correct, SSE instruction definitions on
310 x86-64 (thanks to Alexander Gavrilov).
311 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
312 to help the processor execute spin loops, when applicable. Currently
313 implemented for x86 and x86-64.
314 * optimization: unsigned integer divisions by a constant are implemented
315 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
316 * optimization: improved type-derivation for LOAD-TIME-VALUE.
317 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
318 instructions. (lp#814688)
319 * bug fix: COERCE to unfinalized extended sequence classes now works.
320 (reported by Jan Moringen; lp#815155)
321 * bug fix: a compiler error during typecheck generation, reported by Eric
323 * bug fix: obsolete instance protocol fires when shared slots are added
325 * bug fix: fixed-format floating point printing with scaling factors.
327 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
328 backtraces. (lp#818460)
329 * bug fix: better backtraces for interrupted syscall frames on x86.
331 * bug fix: SSE comparison instructions can be disassembled even when one
332 operand is in memory. (lp#814702)
333 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
334 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
335 type information associated with the VALUES form.
336 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
338 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
339 first write (lp#561642).
340 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
341 * bug fix: bound propagation involving conversion of large bignums to
342 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
344 * bug fix: &REST to &MORE conversion still works in unsafe call to known
345 functions; reported by Lutz Euler (lp#826459).
346 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
349 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
350 * enhancement: errors from FD handlers now provide a restart to remove
351 the offending handler.
352 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
354 * enhancement: location of user or system initialization file can now easily
355 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
356 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
357 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
358 the thunk, as a keyword argument, :arguments.
359 * enhancement: constraint propagation is simplified (and sped up) when
360 COMPILATION-SPEED > SPEED.
361 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
362 * enhancement: debugger understands &MORE arguments better.
363 * optimization: extracting bits of a single-float on x86-64 has been
364 optimized. (lp#555201)
365 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
366 when (> SPEED SPACE).
367 * optimization: local call trampolines (x86 and x86-64) are emitted
369 * optimization: implicit value cells for dynamic-extent closed-over bindings
370 on x86 and x86-64 can hold unboxed values as well.
371 * meta-optimization: improved compilation speed, especially for large
372 functions. (lp#792363 and lp#394206)
373 * bug fix: bound derivation for floating point operations is now more
374 careful about rounding possibly closing open bounds. (lp#793771)
375 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
376 backwards incompatible change in 1.0.48.27)
377 * bug fix: occasional debugger errors in when a type-error occured in a
378 function with dynamic-extent &rest list.
379 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
380 boa-construtors can be used to initialized structure slots.
381 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
382 (lp#795705, regression)
383 * bug fix: DIRECTORY works better on logical pathnames.
384 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
385 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
386 * bug fix: the compiler no longer constant-folds NaNs in
387 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
388 * bug fix: FORMAT now handles floating point rounding correct, eg.
389 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
391 * bug fix: style warning during lambda-list introspection of generic
392 functions with both optional and key argments.
393 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
395 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
398 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
399 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
400 interrupts for its body.
401 * enhancement: source locations are now available for files loaded as
402 source, compile-time-too evaluation, and initialization files.
403 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
404 virtual source-file information, eg. overriding input-file of COMPILE-FILE
405 when a temporary file is used for compilation.
406 * enhancement: ASDF has been updated to version 2.015.3.
407 * enhancement: backtraces involving frames from the default evaluator are
409 * enhancement: RUN-PROGRAM works with user-defined binary input and output
411 * enhancement: more informative compile-time warnings and runtime errors for
412 type-errors detected at compile-time.
413 * enhancement: deadlock detection for mutexes and spinlocks.
414 * enhancement: dynamic-extent for &rest lists stack allocate only their
415 spines, not their argumets. While portable code should not rely on this,
416 particularly in combination with inlining, it should make dynamic-extent
417 easier to use safely.
418 * enhancement: SB-POSIX improvements:
419 ** WNOHANG and WUNTRACED are exported.
420 ** SYSCALL-ERROR now also provides the name of the failing system call.
421 * enhancement: --script improvements:
422 ** errors on standard input, output, and error streams are handled and
423 cause scripts to exit silently, making them easier to use in shell
425 ** backtraces from scripts now go to standard error instead of the
426 terminal even if one is available.
427 ** --script can be an argument, causing the script to be loaded from
429 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
430 strings to foreign memory.
431 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
432 a file, making it easier to understand heap dynamics.
433 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
434 allows the compiler to automatically elide rest-list allocation so long as
435 the call sites are in functions that the compiler knows cannot escape.
437 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
438 especially in safe code when none of the required arguments have changed
440 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
441 uninterruptible, as well as blocking reads from socket streams created
442 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
443 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
444 from the to-char if the from-char is not a dispatch-macro character.
445 * bug fix: references to undefined variables in function calls that are
446 optimized away now signal a runtime error. (lp#722734)
447 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
448 types from a function defined in the same file. (regression from
450 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
452 * bug fix: spurious errors during QUIT when standard streams were closed.
454 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
455 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
456 years, is now no longer supported.
457 * enhancement: read() and write() have been added to SB-POSIX.
458 * enhancement: types of DEFSTRUCT constructors are proclaimed more
459 accurately, allowing better typechecking of call-sites.
460 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
461 are no longer caught. (reverted to pre 1.0.34 behaviour)
462 * optimization: slightly faster ISQRT. (lp#713343)
463 * bug fix: better support for Solaris /bin/sh in sh-based tests.
464 * bug fix: TRACE behaves better when attempting to trace undefined
465 functions. (lp#740717)
466 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
467 to (FUNCALL #'(LAMBDA ...) ...).
468 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
469 a compile-time error. (lp#720382)
470 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
472 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
473 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
474 optimization. (regression from 1.0.45.18/1.0.46.15)
475 * bug fix: package locks did not protects against compile-time side-effects
476 of DEFUN. (lp#675584)
477 * bug fix: --dynamic-space-size argument is validated more carefully.
479 * bug fix: memory fault from printing a malformed simple-condition.
481 * bug fix: redefining classes so that slot-definition classes change now
482 engages the obsolete instance protocol. (lp#766271)
483 * bug fix: constant improper lists could break source coverage recording.
485 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
488 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
489 * bug fix: fix mach port rights leaks in mach exception handling code on
490 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
492 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
493 * enhancement: redefinition warnings for macros from different files. (lp#434657)
494 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
495 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
496 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
497 processed using EVAL -- now the appropriate toplevel form is reported instead.
498 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
499 declarations. (lp#726331)
500 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
501 that NIL/NULL is excluded from the type.
502 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
504 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
506 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
507 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
508 stack-allocated values out of their dynamic-extent. (lp#310175)
509 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
510 x86-64 builds caused a type-error.
511 * bug fix: calling COMPILE with something else than a lambda-expression as the
512 second argument reports a more sensible error. (lp#718905)
513 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
514 are detected. (lp#520607)
515 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
517 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
518 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
519 methods. (regression from 1.0.45.18)
520 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
521 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
522 * bug fix: several foreign functions accepting string also accepted NIL and
523 consequently caused a memory fault at 0 now signal a type-error instead.
525 * bug fix: under rare circumstances, constraint propagation could rewrite a
526 variable reference to refer to a variable not in scope, causing an error
527 during physical environment analysis when attempting to close over the
528 variable. (lp#551227)
529 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
531 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
532 * enhancement: largefile support on Solaris.
533 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
534 arguments (lp#710017)
535 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
536 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
538 * optimization: ERROR and CERROR are approximately 5 times faster.
539 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
540 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
541 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
542 up instance creation in those cases.
543 * optimization: arithmetic operations with multiple constant arguments in now
544 have them reduced at compile-time. (lp#676414)
545 * optimization: determining current character position on string-streams for
546 pretty-printing was overly slow.
547 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
548 lifetime analysis to overwrite closed-over variables (lp#681092).
549 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
550 were not handled correctly (lp#713063).
551 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
553 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
554 mistake. (lp#667297).
555 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
556 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
557 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
558 unintern the wrong symbol with the same name. (lp#693796)
559 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
560 making it possible to restore the initial table if it has been messed up.
563 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
564 * enhancement: ~/ and ~user/ are treated specially in pathnames.
565 Refer to documentation for details.
566 * enhancement: ASDF has been updated to version 2.010.
567 * optimization: mutated closed-over variables that are only accessed by
568 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
569 declared to be DYNAMIC-EXTENT) are stored directly in their containing
570 stack frame, rather than allocating a VALUE-CELL (lp#586103).
571 * optimization: UNWIND-PROTECT cleanup functions are now declared
573 * bug fix: backtracing function with &REST arguments now shows the full
574 argument list. (lp#310173)
575 * bug fix: return types for functions with complex lambda-lists are now
576 derived properly (lp#384892)
577 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
578 long string arguments slowed the compiler down to a crawl.
579 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
580 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
581 in the DEFMETHOD body.
582 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
583 messages, being instead replaced with the corresponding function name.
584 * bug fix: don't derive overly complex unions of numeric types for arithmetic
585 operators. (lp#309448)
587 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
588 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
589 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
590 * enhancement: ALLOCATION-INFORMATION also provides the page the object
592 * enhancement: default dynamic-space size can be configured at build-time
593 without touching source, using the --dynamic-space-size argument to make.sh.
594 * enhancement: DESCRIBE recognizes symbols naming optimization policy
595 qualities, and mentions ALWAYS-BOUND declarations.
596 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
598 * enhancement: ASDF has been updated to 2.009.
599 * enhancement: the system detects known type-erros in calls better,
600 signalling a full warning about violated proclaimed FTYPEs and violations
601 of derived FTYPEs within the same file, including self-calls.
602 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
603 * optimization: constant-folding exploits numeric and character types, in
604 addition member types.
605 * optimization: numeric, character and member types that are inhabited by
606 exactly one value are tested with EQL.
607 * optimization: more conditional branches are eliminated during IR1.
608 Branches are simplified before performing if/if-conversion, and simple
609 equivalent branches (that only read the same constant or variable) are
611 * improvements to the Windows port:
612 ** change: canonical unparsing form for pathname namestrings now uses / as
613 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
614 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
615 on Windows. (thanks to Kalyanov Dmitry)
616 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
618 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
619 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
620 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
621 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
623 * bug fix: interrupts arriving during CL:OPEN caused an error.
624 * bug fix: overeager character buffering could cause input to block
625 spuriously when reading from a pipe (lp#643686)
626 * bug fix: more efficient timer expiry should avoid starvation on systems
627 where number of SIGALRMs per second is restricted. (lp#375515)
628 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
629 * bug fix: compile-times no longer scale linearly with the size of
630 quoted lists in source-code. (lp#654289)
631 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
632 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
633 so badly. (lp#654485)
634 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
635 an error for eg. STRUCTURE. (lp#458015)
636 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
637 (lp#613871, thanks to Roman Marynchak)
638 * bug fix: more reliable &REST list type derivation. (lp#655203)
639 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
640 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
641 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
642 also declared NOTINLINE. (lp#655581)
643 * bug fix: the compiler could attempt to emit constant left shifts of
644 greater value than n-word-bits. (lp#309063)
645 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
646 type information for the function being set. (lp#659220)
647 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
648 containing self-calls were recompiled with a new signature, and failed
649 to warn when a self-call using the old signature was left in. (lp#655126)
650 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
651 :DEFAULT when the default external had character size other than 8 bits.
653 * bug fix: derived types of functions in the same file were implicitly
654 trusted, leading to potential heap corruption when those function were
655 defined incompatibly. (lp#657499)
656 * bug fix: existing ASDF source registries are ignored when building
658 * bug fix: short-form DEFSETF checks that the second argument is a symbol
659 (lp#655824, thanks to Roman Marynchak)
660 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
661 package-lock violation was detected. (lp#660752)
662 * bug fix: the system can store different docstrings for a single function
663 under different names. (lp#661631, regression from 1.0.29.24)
664 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
665 properly. (lp#384801)
666 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
667 of specified length could confuse the type derivation in unsafe code.
669 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
670 fork with multiple Lisp threads running is made on every platform,
671 not just Darwin. (lp#451111)
672 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
673 around when core was saved, which could cause undefined behaviour when the
675 * bug fix: Allow UNTRACE of functions that are no longer defined
676 (lp#667657, thanks to Attila Lendvai)
677 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
678 compile-time warning (lp#664373, thanks to Stas Boukarev)
680 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
681 * incompatible change: FD-STREAMS no longer participate in the serve-event
682 event-loop by default. (lp#316072)
683 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
684 affects streams from CL:OPEN.
685 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
686 default, but this is liable to change: applications needing serve-event
687 for socket streams should explicitly request it using :SERVE-EVENTS T
689 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
691 * enhancement: CLOS effective method functions and defclass slot typechecking
692 function now have debug names for use in backtraces and profiles.
693 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
695 * enhancement: symbols are printed using fully qualified names in several
696 error and warning messages which are often associated with package
697 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
698 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
699 thanks to Andrew Golding)
700 * bug fix: reading /proc files on Linux works. (lp#425199)
701 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
703 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
704 breaking code that tried to write the value of a printer control variable.
705 (lp#581564, thanks to Stas Boukarev)
706 * bug fix: WRITE compiler macro did not handle output stream designators
707 correctly. (lp#598374, thanks to Stas Boukarev)
708 * bug fix: better availability of names of foreign functions in backtraces
709 on Linux. (lp#626962, thanks to Stas Boukarev)
710 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
711 lp#627581, thanks to Josh Elsasser and Jim Wise)
712 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
713 thanks to Josh Elsasser)
714 * bug fix: using aliases for builtin classes as defmethod specializers
715 without adding DEFTYPEs for them works. (lp#618387)
716 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
718 * bug fix: legally dynamic-extent lists and vectors used as
719 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
720 * bug fix: inline-expansion creating references to dead lambda-variables
721 (lp#454681, thanks to Alexey Dejneka)
722 * bug fix: better error message for bogus numerical arguments to RANDOM.
723 (lp#598986, thanks to Stas Boukarev)
724 * bug fix: the compiler occasionally inlined references from incompatible
725 environments occurs. (lp#308951)
726 * bug fix: the compiler threw an error when trying to compile a local
727 function (labels or flet) known to take a specialized complex argument.
728 (not in launchpad, reported by sykopomp in #lispgames)
729 * bug fix: package-locks failed to protect against compile-time effects of
730 DEFUN when the symbol previously had a macro definition. (lp#576637)
731 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
732 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
733 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
734 * bug fix: evaluation in debugger REPL works using the global context when
735 in frames that do not have sufficient debug information.
736 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
738 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
740 * bug fix: interrupt taking longer than the requested period caused SLEEP
741 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
743 changes in sbcl-1.0.42 relative to sbcl-1.0.41
745 ** Cross-compilation host is now specified to make.sh using
746 command-line argument --xc-host=<command> instead of a positional
747 argument. (thanks to Daniel Herring)
748 ** Install location can be specified to make.sh using command-line
749 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
750 * optimization: The default implementation of
751 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
752 * enhancement: Explicit memory barrier operations are now available for use
753 by multithreaded code. See documentation for details.
754 * enhancement: Experimental support for threading on Linux/PPC.
755 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
756 * bug fix: EXPT signals an error if first argument is a zero and second
757 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
758 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
759 (lp#576594, thanks to Roman Marynchak)
760 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
761 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
763 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
764 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
765 cached, leading to many fewer expensive calls to
766 COMPUTE-APPLICABLE-METHODS.
767 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
768 CLASS argument, search for and call an appropriate optimized ctor function
770 * bug fix: WRITE always returns the correct value.
772 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
773 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
774 * bug fix: Name conflicts between symbols passed as arguments to a single
775 call to IMPORT no longer add multiple symbols with the same name to the
776 package (detectable via DO-SYMBOLS).
777 * bug fix: support building without the dlshim on darwin x86 and x86-64
779 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
781 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
782 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
784 * bug fix: linkage-table entries on PPC now no longer overflow their
785 space allocation (potentially causing crashes if they are written out
787 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
788 platforms, preventing the GC from seeing stale pointers on the control
789 stack in subsequent GCs (which would, and does, break invariants).
790 * bug fix: 32-bit unicode external formats now work on big-endian systems.
791 * bug fix: Literal characters with code points greater than about 32767
792 now work on PPC UNICODE builds.
793 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
794 high order bits are explicitly cleared out. In some contrived situations,
795 this could lead to wrong results in mixed real/complex float arithmetic.
796 * bug fix: Fix function/macro redefinition warnings when building with
797 clisp. (lp#576787, thanks to Josh Elsasser)
798 * new platform: experimental support for ppc/openbsd (thanks to Josh
800 * bug fix: Floating-point traps now work on ppc/linux.
802 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
803 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
804 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
805 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
806 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
807 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
808 SB-THREAD:GRAB-MUTEX.
809 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
810 contain additional data structures and tools for concurrent programming;
811 at the moment it contains a lock-free queue, and a lock-free mailbox
813 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
814 GET-MUTEX but takes &key rather than &optional parameters. Also added
815 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
817 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
818 SB-THREAD:WAIT-ON-SEMAPHORE.
819 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
821 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
822 conditions to defer the deadline for forever.
823 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
825 * enhancement: errors from NO-APPLICABLE-METHOD and
826 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
827 generic function call.
828 * enhancement: SB-BSD-SOCKET improvements
829 ** sockets and socket streams now have a more informative printed
830 representation based on the corresponding SOCKET-NAME and
832 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
834 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
835 CL:CLOSE when appropriate, and no longer disassociates the stream
836 from the socket if close failed. (lp#543951)
837 * improvements to the instrumenting profiler
838 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
839 ** optimization: counters no longer use locks for the overflow mode.
840 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
841 incurred an off-by-one miscount.
842 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
843 * enhancement: improved DEFMETHOD pretty-printing.
844 * enhancement: perform range reduction when arguments are too large for
845 x87's transcendentals (instead of returning 0). (lp#327192)
846 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
847 some of CL-PPCRE's macros. (lp#570079)
848 * enhancement: our machine code is slightly less hostile to valgrind on
850 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
851 to Robert Swindells and Aleksej Saushev)
852 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
853 * bug fix: a rare case of startup-time page table corruption.
854 * bug fix: a semaphore with multiple waiters and some of them unwinding due
855 to timeouts could be left in an inconsistent state.
856 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
857 * bug fix: misoptimization of multiplication by one in
858 (SB-C::FLOAT-ACCURACY 0) policies.
859 * bug fix: miscounts in SB-PROFILE.
860 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
861 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
862 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
863 up itself" (March 2010) for further details.
864 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
865 against length of the list if the element is found before the specified
866 END is reached. (thanks to Alec Berryman, lp#554385)
867 * bug fix: errors signalled during package graph modification no longer
868 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
869 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
870 :SB-DOC feature. (lp#552564)
871 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
872 * bug fix: more robust runtime executable path detection. (lp#375549)
873 * bug fix: GCD always returns positive values. (lp#413680)
874 * bug fix: Converting division to multiplication by reciprocal handles
876 * bug fix: We were too eager in eliding range reduction tests on x87.
877 The maximal magnitude is 2^63, not 2^64.
878 * bug fix: Transforms for TRUNCATE don't die when the result is completely
880 * bug fix: Maybe restore buildability on Alpha.
881 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
883 * bug fix: RANDOM-STATE can be printed readably again.
884 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
885 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
886 types) could result in type mismatches during compilation.
888 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
889 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
890 stack frame thrown from.
891 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
892 compiler optimization qualities inside dynamic extent of its body.
893 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
894 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
896 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
897 constraint propgation, allowing better compilation eg. when used to
898 access structures with WITH-SLOTS. (lp#520366)
899 * optimization: the compiler is now more aware of the type of the underlying
900 storage vector for multidimensional simple arrays resulting in better code
901 for accessing such arrays.
902 * optimization: passing NIL as the environment argument to TYPEP no longer
903 inhibits optimizing it. (lp#309788)
904 * optimization: more efficient register usage when handling single-float
905 arguments on x86-64. (thanks to Lutz Euler)
906 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
907 pre-allocated temporary vectors. (lp#496249)
908 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
909 in :INITIAL-CONTENTS. (lp#523612)
910 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
911 functions. (lp#524707)
912 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
913 WITH-SLOTS usages during compilation.
914 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
915 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
916 all x86oid platforms with :UD2-BREAKPOINTS target feature.
917 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
918 instruction (tested on x86oid linux with ud2-breakpoints).
919 * bug fix: slam.sh now works on win32.
920 * bug fix: better differences of numeric types. (lp#309124)
921 * bug fix: arrays declared intersection and union types can have their
922 upgraded element type derived. (lp#316078)
923 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
924 threads started during profiling. (lp#472499)
925 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
927 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
928 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
929 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
930 values instead of signaling an error. (lp#309093)
931 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
933 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
934 declarations (lp#497321)
935 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
936 and failed to detect circular lists (lp#452008)
937 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
939 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
940 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
941 due to it, so that handlers can run.
942 * bug fix: reparsing undefined types if they have become defined since
944 * bug fix: missing &REST type in a proclamation for a function with both
945 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
946 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
947 expanded calls (lp#542174)
948 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
949 than just at toplevel form.
951 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
952 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
953 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
954 but work on type specifiers.
955 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
956 to name a type specifier.
957 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
958 specifier is valid where "valid" basically means "would be accepted as
959 second argument of TYPEP".
960 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
961 returns the function's declared, or derived FTYPE.
962 * new feature: SB-POSIX now supports accessing the d_ino member of
963 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
964 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
965 provide for seeding a RANDOM-STATE object with user-provided data or
966 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
967 attempt to initialize the returned state from the operating system's
968 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
969 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
970 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
971 * bug fix: Fix grammar and style issues for the docstrings of
972 printer-related variables and functions. (Thanks to mon_key; launchpad
974 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
976 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
977 in a row even though a handler defered the deadline long into the
979 * bug fix: A deadline handler was run without interrupts enabled for a
980 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
981 in infinitely spinning, non-killable threads.
982 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
983 before reaching the erring stack frame.
984 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
985 real power. (launchpad bug lp#525949)
986 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
987 GENCGC platforms. (launchpad bug lp#529014)
988 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
989 (launchpad bug lp#525916)
990 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
991 (Thanks to Robert Goldman)
993 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
994 * optimization: ROUND with a single single-float or double-float argument
995 is properly inlined when possible.
996 * optimization: Slightly better code is generated for integer<->float
997 conversions and for single-float<->double-float conversions on x86-64.
998 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
999 code for 32-bit and 64-bit rotations on x86-64.
1000 * bug fix: The install script changes the ownership of directories as well
1001 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1002 launchpad bug lp#508485)
1003 * bug fix: TRUNCATE with a single single-float or double-float argument is
1004 properly inlined when possible. (launchpad bug lp#489388)
1005 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1006 no longer causes a compiler error on x86 and ppc.
1007 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1008 always relative to *READTABLE* rather than the passed argument.
1010 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1011 * minor incompatible change: threading support is now enabled by default
1013 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1015 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1016 are now caught and reported just like errors during macroexpansion.
1017 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1018 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1019 * enhancement: ASDF systems can now depends on SB-QUEUE.
1020 * fixes and improvements related to Unicode and external formats:
1021 ** bug fix: error handling and restart usage in the ucs-2 external format
1023 ** there is now an implementation of the ucs-4 external format.
1024 ** the utf-16 and utf-32 external formats are supported.
1025 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1026 in the environment. setenv() and unsetenv() are also provided. (reported by
1027 Fare Rideau; launchpad bug lp#460455)
1028 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1029 loading. This ensures sensible errors for .FASL files from other
1030 implementations on case-insensitive filesystems. (reported by Willem
1031 Broekema; launchpad bug lp#489417)
1032 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1033 Willem Broekema; launchpad bug lp#489698).
1034 * bug fix: some minor code rearrangements to reenable warning-free building
1035 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1036 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1038 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1041 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1042 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1043 * improvement: support O_LARGEFILE access to files larger than 2GB on
1044 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1045 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1046 definitions for methods specializing on the passed class itself.
1047 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1048 definitions for methods specializing on the passed class itself, or on
1050 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1051 about itself during the build (e.g. for M-? in Slime), if this flag is
1052 enabled in customize-target-features.lisp. This will increase the core
1053 size by about 5-6mb, though, so it's mostly interesting to SBCL
1055 * new feature: various GENCGC tuning parameters have been experimentally
1056 documented and exported from SB-EXT. See documentation for details.
1057 * fixes and improvements related to Unicode and external formats:
1058 ** the Unicode character database has been upgraded to the
1059 Unicode 5.2 standard, giving names and properties to a number of new
1060 characters, and providing a few extra characters with case
1062 ** improvement: restarts for providing replacement input/output on coding
1063 errors for fd-stream external formats.
1064 ** improvement: where :<encoding> is a keyword corresponding to an
1065 external format the system supports, it is now possible to specify
1066 (:<encoding> :replacement <character>) as an external format which will
1067 automatically substitute <character> on encoding or decoding errors for
1068 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1070 ** improvement: the file streams underlying the standard streams (such as
1071 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1072 which uses the replacement mechanism to handle encoding errors,
1073 preventing various infinite error chains and unrecoverable I/O
1075 ** minor incompatible change: the utf-8 external format now correctly
1076 refuses to encode Lisp characters in the surrogate range (char-codes
1077 between #xd800 and #xdfff).
1078 ** fix a typo preventing conversion of strings into octet vectors
1079 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1081 ** fix a bug in the octet multibyte handling of decoding errors and the
1082 USE-VALUE restart. (launchpad bug lp#314939)
1083 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1084 restart on fd-stream decoding errors.
1085 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1086 error is near the end of file.
1087 ** fix a double-error case in unibyte octet conversions, when the first
1088 use of USE-VALUE is ignored.
1089 ** fix bugs in handling of undefined code points in unibyte encodings.
1090 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1091 streams after an UNREAD-CHAR.
1092 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1093 object is allocated in a boxed region of dynamic space.
1094 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1095 fork with multiple Lisp threads running is made, instead of going
1096 ahead with unpredictable consequences. (reported by Leslie Polzer)
1097 * bug fix: uses of slot accessors on specialized method parameters within
1098 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1099 error while finalizing the class. This fix may cause classes with slot
1100 accessors to be finalized later than previously. (reported by Lars Rune
1101 Nøstdal; launchpad bug lp#473699)
1102 * bug fix: restore buildability on the MIPS platform. (regression from
1103 1.0.30.38, reported by Samium Gromoff)
1104 * bug fix: inspecting closures is less likely to fail with a type error.
1105 * bug fix: no timer starvation when setting the system clock back.
1106 (launchpad bug lp#460283)
1107 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1108 standard pprint dispatch table as specified by CLHS.
1109 * bug fix: give CLISP a hint about a type declaration to enable it to build
1110 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1112 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1113 (reported by Attila Lendvai; launchpad bug lp#310132)
1114 * bug fix: distinguish in type specifiers between arrays that might be
1115 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1116 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1117 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1118 * bug fix: setting the value of a symbol-macro within a method in the
1119 presence of type declarations works properly again. (reported by Iban
1120 Hatchondo; launchpad bug lp#485019)
1122 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1123 * optimization: faster FIND and POSITION on strings of unknown element type
1124 in high SPEED policies. (thanks to Karol Swietlicki)
1125 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1127 * improvement: better error signalling for bogus parameter specializer names
1128 in DEFMETHOD forms (reported by Pluijzer)
1129 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1131 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1133 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1134 removes previous default initargs (reported by Lars Rune Nøstdal and
1136 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1137 lambda-lists. (reported by Peter Seibel)
1138 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1139 correctly when starting from an executable core without saved runtime
1140 options (reported by Faré Rideau, thanks to Zach Beane)
1141 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1142 an optimization note instead. (reported by Martin Cracauer)
1143 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1144 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1145 new process group if it doesn't need to share stdin with the sbcl
1146 process. (thanks to Leslie Polzer)
1147 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1148 (reported by Stanislaw Halik)
1150 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1151 * improvement: stack allocation is should now be possible in all nested
1152 inlining cases: failure to stack allocate when equivalent code is manually
1153 open coded is now considered a bug.
1154 * improvements related to Unicode:
1155 ** the Unicode character database has been upgraded to the
1156 Unicode 5.1 standard, giving names and properties to a number of new
1157 characters, and providing a few extra characters with case
1159 ** the system now recognizes and produces names for Unicode Hangul
1160 syllable characters.
1161 ** the EBCDIC-US external-format is now supported for octet operations
1162 (as well as for stream operations).
1163 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1164 be used to output toplevel compile-time effects into a separate .CFASL
1166 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1167 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1169 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1171 * optimization: division of floating point numbers by constants uses
1172 multiplication by reciprocal when an exact reciprocal exists.
1173 * optimization: multiplication of single- and double-floats floats by
1174 constant two has been optimized.
1175 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1176 sufficient type information is available. (thanks to Leslie Polzer)
1177 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1178 known structure objects are as efficient as defstruct generated accessors.
1179 * optimization: unused vector creation can now be optimized away.
1180 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1181 * improvement: a STYLE-WARNING is signalled when a generic function
1182 clobbers an earlier FTYPE proclamation.
1183 * improvement: the compiler is able to track the effective type of
1184 generic function across method addition and removal even in the
1185 absence of an explicit DEFGENERIC.
1186 * improvement: DESCRIBE now reports on symbols naming undefined
1187 but assumed or declared function as well.
1188 * improvement: recompilation of systems using SB-GROVEL now works
1189 (thanks to Leslie Polzer)
1190 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1191 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1193 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1194 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1195 well as user defined declaration names.
1196 ** VARIABLE-INFORMATION is now aware of alien variables.
1197 * improvement: improved address space layout on OpenBSD (thanks to Josh
1199 * improvement: pretty-printing of various Lisp forms has been improved
1200 (thanks to Tobias Rittweiler)
1201 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1202 unused were deleted in safe code. (reported by John Fremlin)
1203 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1205 * bug fix: some out-of-line array predicates were missing (reported by
1207 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1209 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1210 (thanks to Larry D'Anna)
1211 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1212 as well. (reported by Josh Elsasser)
1213 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1214 leading to possible attempts to delete the same file twice. See docstring
1215 on DELETE-FILE for details. (reported by John Fremlin)
1216 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1217 designator argument, rather than its truename. (reported by Luis
1219 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1220 information about some array types. (thanks to Luis Oliveira)
1221 * bug fix: moderately complex combinations of inline expansions could
1222 be miscompiled if the result was declared to be dynamic extent.
1223 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1224 form (+ <variable> <integer>) were miscompiled under certain
1226 * bug fix: in some cases no compiler note about failure to stack allocate
1227 was emitted, even if the objects were in fact heap allocated.
1228 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1229 allocation could cause objects users might reasonably expect to
1230 be heap allocated to be stack allocated.
1231 * bug fix: DESCRIBE signalled an error for generic functions under
1232 certain circumstances. (thanks to Leslie Polzer)
1233 * bug fix: Fixed spelling of an error message.
1235 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1236 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1237 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1238 of SB-THREAD:THREAD-ERROR-THREAD.
1239 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1240 * new feature: docstrings for local and anonymous functions are no longer
1241 discarded. (thanks to Leslie Polzer)
1242 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1243 values in other threads.
1244 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1245 about object allocation.
1246 * optimization: division of a real float by a complex float is implemented
1247 with a specialised code sequence.
1248 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1249 keywords is an order of magnitude faster.
1250 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1251 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1252 methods, and similarly for non-standard metaclass classes as long as there
1253 are no methods additional on MAKE-INSTANCE.
1254 * optimization: more efficient type-checks for FIXNUMs when the value
1255 is known to be a signed word on x86 and x86-64.
1256 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1257 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1259 * optimization: compiler is smarter about delegating argument type checks to
1261 * optimization: several character functions are now compiled somewhat more
1262 efficiently. (reported by Lynn Quam)
1263 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1264 * improvement: less unsafe constant folding in floating point arithmetic,
1265 especially for mixed complex/real -float operations.
1266 * optimization: constant double and single floats are stored in native
1267 unboxed format on x86[-64].
1268 * optimization: smarter code for arithmetic operations with constant floats,
1269 complex floats, or integers on x86[-64].
1270 * optimization: smarter code for conjugate/multiplication of float complexes
1271 and abs/negate of floats on x86-64.
1272 * optimization: more efficient complex float and real float operations on
1274 * improvement: complex float division is slightly more stable.
1275 * improvement: DESCRIBE output has been reworked to be easier to read and
1276 contains more pertinent information.
1277 * improvement: failure to provide requested stack allocation compiler notes
1278 provided in all cases (requested stack allocation not happening without a
1279 note being issued is now considered a bug.)
1280 * bug fix: SB-POSIX exports the documented types and functions
1281 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1282 types. (reported by "abhi")
1283 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1284 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1285 (thanks to Paul Khuong)
1286 * bug fix: looping around HANDLER-CASE could silently consume stack space
1287 on each iteration. (reported by "foobar")
1288 * bug fix: better error signalling when calls to functions seeking elements
1289 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1290 (reported by Tobias Rittweiler)
1291 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1292 directory components now works as it used to. (various prolems reported by
1293 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1294 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1295 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1296 * bug fix: bogus undefined variable warnings from fopcompiled references to
1297 global variables. (thanks to Lars Rune Nøstdal)
1298 * bug fix: foreign function names should now appear in backtraces on
1299 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1300 * bug fix: SETF compiler macro documentation strings are not discarded
1302 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1303 (thanks to Alex Plotnick)
1304 * bug fix: SLEEP accepts large integer arguments, truncating them to
1305 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1306 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1307 * bug fix: compiler notes for expensive slot type checks could be emitted
1308 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1310 changes in sbcl-1.0.29 relative to 1.0.28:
1311 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1312 https://bugs.launchpad.net/sbcl
1313 Bugs can be reported directly there, or by sending email to
1314 sbcl-bugs@lists.sourceforge.net
1315 (no subscription required.)
1316 * minor incompatible change: under weak type checking policy integer
1317 types are weakened less aggressively.
1318 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1319 allowed to return, which causes SBCL to quit with exit status 0. Previously
1320 if the function returned with a small integer return value, that value
1321 was accidentally reused as the exit status.
1322 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1323 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1324 :HASH-FUNCTION argument. Refer to user manual for details.
1325 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1327 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1328 microseconds since the Unix epoch on all platforms.
1329 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1330 allows the compiler to safely elide boundedness checks for special
1332 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1333 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1334 efficiency measure for threaded platforms, but also valueable in
1336 * new feature: UNC pathnames are now understood by the system on Windows.
1337 * optimization: the compiler uses a specialized version of FILL when the
1338 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1340 * optimization: accesses to potentially non-simple arrays where element type
1341 is known are 50% faster.
1342 * optimization: compiler now generates faster array typechecking code.
1343 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1345 * optimization: multidimensional array accesses in the absence of type
1346 information regarding array rank are approximately 10% faster due to
1347 open coding of ARRAY-RANK.
1348 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1349 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1351 * optimization: result of call to VECTOR can now be stack allocated.
1352 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1353 as long as the resulting array is one-dimensional and has a known
1354 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1355 length of the list matches the known length of the vector does not
1356 allocate the list as an intermediate step. Ditto for VECTOR and simple
1358 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1359 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1360 known element type, and is known to be simple and one dimensional.
1361 * improvement: SBCL now emits a compiler note where stack allocation was
1362 requested but could not be provided (not in all cases, unfortunately)
1363 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1364 * improvement: pretty-printing loop has been implemented properly. (thanks
1365 to Tobias Rittweiler)
1366 * documentation: CLOS slot typechecing policy has been documented.
1367 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1368 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1369 pointer, leading to memory faults. (thanks to Bart Botta)
1370 * bug fix: better floating point exception handling on x86/OpenBSD.
1371 (thanks to Josh Elsasser)
1372 * bug fix: exit status from QUIT when called under --script was lost
1373 (reported by Hubert Kauker)
1374 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1375 same implementation of FILL to initialize the array, even if a more
1376 efficient one was available (reported by Stas Boukarev, thanks to
1378 * bug fix: potential miscompilation of array stack allocation on x86 and
1379 x86-64. (reported by Time Tossavainen)
1380 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1381 result in their subforms being treated as top level forms. (reported by
1383 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1384 than a machine register could leave garbage in the high bits of the
1385 result register (bug 316325).
1386 * bug fix: disable address space randomization Linux/x86-64 as well,
1387 not just x86-64. (reported by Ken Olum)
1388 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1389 generate incorrect code.
1390 * bug fix: #201; type inference for CONS and ARRAY types could derive
1391 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1392 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1393 could not be assigned to or bound with PROGV. (reported by Lorenz
1395 * bug fix: the value of CL:- in the inspector was the previous expression
1396 evaluated rather than the expression being evaluated.
1397 * bug fix: constants can no longer be locally declared special.
1398 * bug fix: signals delivered to threads started from foreign land (read:
1399 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1400 thread by blocking all signals and resignalling.
1401 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1402 from :INITFORM, if any.
1404 changes in sbcl-1.0.28 relative to 1.0.27:
1405 * a number of bugs in cross-compilation have been fixed, with the ultimate
1406 result that building under (at least) clisp should be much more reliable.
1407 * minor incompatible changes: echo-streams now propagate unread-char to the
1408 underlying input stream, and no longer permit unreading more than one
1410 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1411 frames, allowing for instance more reliable backtraces.
1412 * improvement: the debugger REPL can now reference lexical variables
1413 by name directly for code compiled with (DEBUG 3).
1414 * improvement: errors from malformed declarations now have better source
1415 paths associated with them. (thanks to Tobias Rittweiler)
1416 * optimization: faster local calls on x86/x86-64
1417 * bug fix: some error messages for out-of-bound array indexes confused the
1418 index and the bound. (thanks to Stas Boukarev)
1419 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1421 * bug fix: running regressions tests in shells without OSTYPE set now works.
1422 (reported by Harald Hanche-Olsen)
1423 * bug fix: more robust static space exhaustion signalling from
1424 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1425 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1426 docstring away instead of storing it under names such as (LAMBDA (X)).
1427 (reported by Leslie Polzer)
1428 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1429 (thanks to Ole Arndt for the patch)
1430 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1431 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1432 potentially-invalid effective methods in its cache.
1433 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1434 instances as well (thanks to Paul Khuong)
1435 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1436 SB-POSIX:WAITPID and their C equivalents.
1437 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1439 changes in sbcl-1.0.27 relative to 1.0.26:
1440 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1441 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1442 * improvement: the system either recovers from stack exhaustion or dies
1443 properly as opposed to leaving the user uncertain of whether the handler
1444 trampled on some random memory next to the stack or having to rely on
1445 --lose-on-corruption (which is still a good idea to use in production
1446 because stack exhaustion can happen in signal handlers which will likely
1448 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1449 1.0.25.37, reported by Harald Hanche-Olsen)
1450 * bug fix: work around signal delivery bug in darwin (regression from
1451 1.0.25.44, reported by Sidney Markowitz)
1452 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1454 changes in sbcl-1.0.26 relative to 1.0.25:
1455 * incompatible change: an interruption (be it a function passed to
1456 INTERRUPT-THREAD or a timer function) runs in an environment where
1457 interrupts can be enabled. The interruption can use
1458 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1459 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1460 potentially running out of stack. Keep in mind that in the absence
1461 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1462 acquiring a lock can enable interrupts.
1463 * incompatible change: GC-OFF and GC-ON are removed, as they were
1464 always unsafe. Use WITHOUT-GCING instead.
1465 * new feature: runtime option --disable-ldb
1466 * new feature: runtime option --lose-on-corruption to die at the
1467 slightest hint of possibly non-recoverable errors: running out of
1468 memory, stack, alien stack, binding stack, encountering a memory
1469 fault, etc. In the absence of --lose-on-corruption a warning is
1471 * enhancement: detect binding stack exhaustion
1472 * enhancement: detect alien stack exhaustion on x86/x86-64
1473 * improvement: generally more stable and reliable interrupt handling
1474 * improvement: there is a per thread interruption queue,
1475 interruptions are executed in order of arrival
1476 * improvement: a repeating timer reschedules itself when the it has
1477 finished, but expiration times are spaced equally. If an
1478 expiration time is in the past it will trigger after a short grace
1479 period that may give a chance to other things to run.
1480 * optimization: slightly faster gc on multithreaded builds
1481 * optimization: faster WITHOUT-GCING
1482 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1483 important locks so that the debugger/handler doesn't produce
1484 recursive errors or deadlock.
1485 * bug fix: real-time signals are not used anymore, so no more
1486 hanging when the system wide real-time signal queue gets full.
1487 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1489 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1490 * bug fix: fix random memory faults related to interrupts on alpha
1491 * bug fix: fix random memory faults related to interrupts on sparc
1492 * bug fix: fix deadlocks related to starting threads
1493 * bug fix: fix deadlines on locks on futex platforms
1494 * bug fix: restore errno in signal handlers
1495 * bug fix: fix deadlocks related to hash tables
1496 * bug fix: fix deadlocks in pcl
1498 changes in sbcl-1.0.25 relative to 1.0.24:
1499 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1500 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1501 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1502 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1503 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1504 better name and does not return values so stale on multiprocessor systems.
1505 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1507 * improvement: unithread builds keep track of MUTEX-VALUE.
1508 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1509 stream anymore making it thread safe to have a concurrent reader and
1510 a writer, for instance, in a pipe.
1511 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1512 arguments, making compiler-macros for SETF-functions able to inspect
1513 their constant arguments.
1514 * improvement: COMPILE-FILE reports times with millisecond accuracy
1515 (thanks to Luis Oliveira)
1516 * optimization: CHAR-CODE type derivation has been improved, making
1517 TYPEP elimination on subtypes of CHARACTER work better. (reported
1518 by Tobias Rittweiler, patch by Paul Khuong)
1519 * bug fix: setting alien structure fields of type struct by value now
1520 computes the right offset for the memory copy.
1521 * bug fix: compilation problem involving inlined calls to aliens with
1522 result type VOID. (reported by Ken Olum)
1523 * bug fix: #235a; sequential inline expasion in different policies no
1524 longer reuses the functional from the previous expansion site.
1525 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1526 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1527 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1528 cause an implied type redefinition. Regression from 1.0.21.29.
1529 * bug fix: sign-extension of small signed return values now works with C
1530 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1531 * improvements to the Windows port:
1532 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1533 Westfold, thanks to Rudi Schlatte)
1535 changes in sbcl-1.0.24 relative to 1.0.23:
1536 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1537 vector of a multidimensional SIMPLE-ARRAY.
1538 * new feature: the system now signals a continuable error if standard
1539 readtable modification is attempted. (thanks to Tobias Rittweiler)
1540 * new feature: DIRECTORY has been extended with a non-standard keyword
1541 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1542 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1543 has been robustified and documented better. (thanks to Robert Goldman)
1544 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1545 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1546 * tradeoff: constant FORMAT control strings are now compiled unless
1547 SPACE > SPEED (previously only when SPEED > SPACE.)
1548 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1550 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1552 * bug fix: lexical type declarations are now correctly reported by
1553 SB-CLTL2. (reported by Larry D'Anna)
1554 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1555 using UTF-8 as external format. (thanks to Luis Oliveira)
1556 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1557 are signalled correctly. (thanks to Stas Boukarev)
1558 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1559 designator. (thanks to Tobias Rittweiler)
1560 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1561 designator, and returns T instead of the function. (thanks to
1563 * bug fix: direct superclasses of STANDARD-CLASS and
1564 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1565 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1566 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1567 when no class with the named slot yet exists no longer causes a
1568 compile-time style-warning.
1569 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1570 in safe code. (reported by Didier Verna)
1571 * bug fix: #430; nested structure constructors can stack allocate.
1572 * bug fix: on some 64-bit platforms dynamic space size was truncated
1573 to #xffff0000 bytes. (reported by Benjamin Lambert)
1574 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1575 REPL unusable. (reported by Daniel Herring)
1576 * bug fix: return values of READ-SEQUENCE did not take :START into
1577 account on file streams, regressions since 1.0.12.22. (reported by
1578 Thomas Russ, patch by Paul Khuong)
1579 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1580 method specializer used to confuse permuation vector optimization.
1581 * bug fix: system inserted bogus implicit type declarations for local
1582 special variables in DEFMETHOD bodies.
1583 * bug fix: #354; duplicated frames in backtraces due to
1584 non-tail-call-optimized XEPs to functions with return type NIL
1586 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1587 initializes structure object slots according to DEFSTRUCT initforms,
1588 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1589 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1590 (reported by Bruno Haible and Stephen Wilson)
1591 * bug fix: #395; fill-pointer output streams used now support
1592 element-type BASE-CHAR as well.
1593 * bug fix: compiler error when attempting to derive return value of
1594 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1596 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1598 * bug fix: Mac OS X binaries should now be portable between Leopard
1601 changes in sbcl-1.0.23 relative to 1.0.22:
1602 * enhancement: when disassembling method functions, disassembly
1603 for the associated fast function is also produced.
1604 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1606 * optimization: printing with *PRINT-PRETTY* true is now more
1607 efficient as long as the object being printed doesn't require
1608 special handling by the pretty printer.
1609 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1610 now interact correctly with type declarations.
1611 * partial bug fix: PCL detects infinite recursion during wrapper
1612 validation. (thanks to Attila Lendvai)
1613 * bug fix: #426; nested function calls are inlined properly.
1614 Previously if FOO was an inline function, in calls of the form
1615 (FOO (FOO ...)) the outer call was not inlined.
1616 * bug fix: long long arguments passed in registers to alien
1617 functions on PowerPC Linux and NetBSD are now handled correctly
1618 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1620 changes in sbcl-1.0.22 relative to 1.0.21:
1621 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1622 for the shared object in the current directory, but passes the native
1623 namestring of the designated pathname to the operation system's shared
1624 object loading function as-it.
1625 * minor incompatible change: --disable-debugger toplevel option now takes
1626 effect before processing of initialization files and --eval or --load
1628 * new feature: new commandline argument: --script, which supports
1629 shebang lines. See documentation for details. (based on work by
1631 * new feature: SAVE-LISP-AND-DIE can save current values of
1632 --dynamic-space-size and --control-stack-size in the executable core,
1633 causing it to skip normal runtime option processing. See documentation
1634 for details. (thanks to Zach Beane)
1635 * enhancement: inoccous calls to EVAL or generic functions dispatching
1636 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1637 * enhancement: the system no longer resignals errors from --load and
1638 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1639 associated with the original error to be lost. (thanks to Ariel
1641 * enhancement: :DONT-SAVE keyword argument has been added to
1642 LOAD-SHARED-OBJECT for controlling interaction with
1643 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1644 the effects of an earlier LOAD-SHARED-OBJECT call.
1645 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1646 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1647 provided. (reported by Cedric St-Jean)
1648 * bug fix: circularity handling in the reader did not treat raw
1649 structure slots correctly. (reported by Cedric St-Jean)
1650 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1651 file descriptors when there were none.
1652 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1653 was broken. (reporteed by Willem Broekema)
1654 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1655 pathnames without a directory.
1656 * bug fix: COMPILE-FILE did not warn about undefined variable
1657 references at toplevel, and LOAD of the resulting fasl did
1658 not signal an error.
1659 * bug fix: functions with non-required arguments used to end up with
1660 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1661 * bug fix: redefining a function with non-required arguments didn't
1662 update the system's knowledge about its call signature properly.
1663 * bug fix: fixed #431; incompatible alien record type redefinitions
1664 are detected and handled. (reported by Neil Haven)
1665 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1666 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1668 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1669 after alien stack frames.
1670 * bug fix: strings passed to mk{s,d}temp lacked null termination
1672 changes in sbcl-1.0.21 relative to 1.0.20:
1673 * new feature: the compiler is able to track the effective type of a
1674 generic function across method addition and removal.
1675 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1676 appropriately typed structure slots without locking.
1677 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1678 information like those gathered by TIME using a programming-friendly
1680 * new feature: TIME reports time taken even if the form performs a
1681 non-local transfer of control.
1682 * enhancement: reduced conservativism on GENCGC platforms: on
1683 average 45% less pages pinned (measured from SBCL self build).
1684 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1685 mutate constant symbols or violate declaimed type of the symbol.
1686 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1687 sleeping on the semaphore in heavily contested semaphores.
1688 * bug fix: semaphores and condition variables were not interrupt
1690 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1691 owned by other threads anymore.
1692 * bug fix: FIND on lists called KEY outside the specified
1693 subsequence. (reported by budden)
1694 * bug fix: LOG doesn't use single-float intermediate results when
1695 given mixed integer and double-float arguments, leading to better
1696 precision. (reported by Bob Felts)
1697 * bug fix: LOG with base zero returned values of inconsistent type.
1699 changes in sbcl-1.0.20 relative to 1.0.19:
1700 * minor incompatible change: OPTIMIZE qualities
1701 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1702 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1703 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1704 * documentation: some slot access efficiency guidelines have been
1705 added to the user manual.
1706 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1707 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1708 as ASSOC and MEMEBER.
1709 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1710 to more efficient EQ-comparison versions more often.
1711 * optimization: enhanced derivation of DOLIST iteration variable type
1713 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1715 * optimization: runtime lookup of function definitions can be
1716 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1717 * optimization: compiler is able to derive the return type of
1718 (AREF (THE STRING X) Y) as being CHARACTER.
1719 * optimization: CLRHASH on empty hash-tables no longer does pointless
1720 work. (thanks to Alec Berryman)
1721 * optimization: REPLACE deftransforms don't punt when :START1 or
1723 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1724 no longer emits a code deletion note. (reported by Andrew
1726 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1727 functions with an odd number of &OPTIONAL arguments, a &REST
1728 argument, and one or more &KEY arguments at the call site.
1729 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1730 arguments appeared at call sites as well.
1731 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1732 READ-LINE &co can no longer read from them afterwards. (reported
1734 * bug fix: fixed #427: unused local aliens no longer cause compiler
1735 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1737 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1738 alien-stack leakage. (reported by Andy Hefner)
1739 * bug fix: PROGV signals an error when an attempt to violate declared
1740 type of a variable or bind a constant is made.
1741 * bug fix: SET signals an error when an attempt to violate declared
1742 type of a variable is made.
1743 * bug fix: restart computation during the execution of a restart
1744 test function no longer causes infinite recursion. (reported by
1746 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1747 signals an error. (thanks to Pierre Mai)
1748 * bug fix: EXPORT left symbol unexported in conflict situations.
1749 (thanks to Michael Weber)
1750 * bug fix: correctly handle name conflicts involving CL:NIL.
1751 (thanks to Michael Weber)
1752 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1753 conflicts arising from USEing package with conflicting symbols
1754 correctly. (thanks to Michael Weber)
1756 changes in sbcl-1.0.19 relative to 1.0.18:
1757 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1758 warnings that go otherwise unhandled will be muffled if they are
1759 of the type that's the value of this variable.
1760 * optimization: stack allocation is slightly more efficient on x86
1762 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1763 where a raw slot always is initialized using the initform whose
1764 type is not know sufficiently well a compile-time are now compiled
1765 correctly. (reported by John Morrison)
1766 * bug fix: compiler no longer makes erronous assumptions in the
1767 presence of non-foldable SATISFIES types.
1768 * bug fix: stack analysis missed cleanups of dynamic-extent
1769 arguments in non-let-converted calls to local functions.
1770 * improvements to the Windows port:
1771 ** adjusted address spaces for building on both Win32 and
1772 Win64. (thanks for John Connors)
1773 * fixed some bugs revealed by Paul Dietz' test suite:
1774 ** interval arithmetic during type derivation used inexact integer
1775 to single-float coercions.
1776 ** arithmetic operations involving large integers and single
1777 floats give the same results in compiled and interpreted code.
1778 ** deriving the result type of COERCE no longer signals an error
1779 if the derived type of the second argument is a MEMBER type
1780 containing invalid type specifiers.
1781 ** ADJOIN with constant NIL as second argument works correctly.
1782 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1784 changes in sbcl-1.0.18 relative to 1.0.17:
1785 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1786 profiles only the current thread.
1787 * minor incompatible change: changes to SYMBOL-VALUE of constants
1788 defined with DEFCONSTANT now signal an error.
1789 * enhancement: SB-SPROF now has support for wallclock profiling,
1790 and is also able to profile specific threads. REPORT output
1791 has also additional sorting options.
1792 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1794 * optimization: structure allocation has been improved
1795 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1796 ** out of line constructors are ~10% faster.
1797 ** inline constructors are ~15% faster.
1798 ** inline constructors are capable of dynamic extent allocation
1799 (generally on x86 and x86-64, in some cases on other platforms
1801 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1803 * optimization: file compiler is now able to coalesce non-circular
1804 lists, non-base strings, and bit-vectors. Additionally, constants
1805 are never referenced through SYMBOL-VALUE at runtime.
1806 * optimization: code defining methods on PRINT-OBJECT (and other
1807 generic functions in the COMMON-LISP package) now loads faster.
1808 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1810 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1811 fasl is now deleted. (reported by Attila Lendvai)
1812 * bug fix: READ-LINE always returned NIL for the last line in files.
1813 (reported by Yoshinori Tahara)
1814 * bug fix: more accurate disassembly annotations of foreign function
1815 calls. (thanks to Andy Hefner)
1816 * bug fix: trimming non-simple strings and non-string string
1817 designators when the there is nothing to trim works properly.
1818 (thanks to James Knight)
1819 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1820 (thanks to Travis Cross)
1821 * fixed some bugs revealed by Paul Dietz' test suite:
1822 ** NIL is a valid function name (regression at 1.0.13.38)
1823 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1824 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1825 fill pointers properly (regression at 1.0.12.23)
1826 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1827 displacement indices properly (regression at 1.0.12.23)
1829 changes in sbcl-1.0.17 relative to 1.0.16:
1830 * temporary regression: user code can no longer allocate closure
1831 variable storage on stack, due to bug 419 without explicitly
1832 requesting it. Please consult sbcl-devel for advice if you need to
1833 use this feature in the meanwhile.
1834 * new feature: runtime argument --control-stack-size can be used to
1835 adjust thread default control stack size.
1836 * enhancement: improved TIME output
1837 ** all times are reported using the measured accuracy (milliseconds
1838 for real and GC times, microseconds for everything else.)
1839 ** processor cycle counts on x86 and x86-64.
1840 ** interpreted forms are counted for both evaluator modes.
1841 ** number of lambdas converted by the compiler is reported.
1842 ** CPU percentage report (computed from real and total run time.)
1843 ** more comprehensive run time reporting, using a condenced format
1844 ** interperted form, lambda, and page fault counts are omitted
1846 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1848 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1849 * optimization: two argument forms of LAST are upto ~10% faster
1850 in normal SPEED policies.
1851 * optimization: NCONC no longer needs to heap cons its &REST list
1852 in normal SPEED policies.
1853 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1854 to Sidney Markowitz)
1855 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1856 regression since 1.0.9.1. (thanks to Eric Marsden)
1857 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1858 since 1.0.15.36. (thanks to Paul Khuong)
1859 * bug fix: LAST when always returned the whole list when given a bignum
1860 as the second argument.
1861 * bug fix: dynamic extent allocation of nested lists and vectors
1862 could leak to otherwise accessible parts.
1863 * bug fix: invalid optimization of heap-allocated alien variable
1865 * bug fix: fasl header checking is less vulnerable to different
1866 platform word lengths.
1867 * bug fix: more correct assembler syntax for GNU binutils
1868 2.18.50.0.4 support. (thanks to Marijn Schouten)
1869 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1871 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1872 declarations) successfully. (reported by Attila Lendvai)
1874 changes in sbcl-1.0.16 relative to 1.0.15:
1875 * minor incompatible change: revert the changes to sb-posix's error
1876 signaling added in 1.0.14.
1877 * minor incompatible change: change PROBE-FILE back to returning
1878 NIL whenever we can't get a truename, as was the case before 1.0.14.
1879 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1880 inherits from ERROR instead of just CONDITION.
1881 * new feature: SB-INTROSPECT can provide source locations for instances
1882 as well. (thanks to Tobias Rittweiler)
1883 * optimization: binding special variables now generates smaller code
1884 on threaded platforms.
1885 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1886 and cases where no :TEST is given but the compiler can infer that
1887 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1888 * optimization: better LOGNOT on fixnums.
1889 * optimization: modular arithmetic for a particular requested width
1890 is implemented using a tagged representation unless a better
1891 representation is available.
1892 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1893 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1894 for wellformedness and returns a specialized vector. (reported by
1895 Francois-Rene Rideau)
1896 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1897 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1898 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1899 unscheduling timer at the same time as another timer fires.
1900 * bug fix: don't reschedule timers for dead threads.
1901 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1902 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1903 bogus errors if select() was interrupted.
1904 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1906 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1907 * enhancement: cleaner backtraces for interactive interrupts, as
1908 well as other cases where the interesting frames used to be
1909 obscured by interrupt handling frames.
1910 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1911 now supported, and tracing a whole package using (TRACE "FOO") now
1912 traces SETF-functions as well.
1913 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1914 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1915 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1916 * unreadably printed representation of hash-tables now includes
1918 * bug fix: partially fixed #188: type propagation from assignments
1919 is now more efficient.
1920 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1921 'DOUBLE-FLOAT) are not flushable.
1922 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1923 full address of the object, and none of the tag bits.
1924 * bug fix: readably printing hash-tables now respects other printer
1925 control variables. (reported by Cedric St-Jean)
1926 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1927 keyword with MAKE-HASH-TABLE.
1928 * bug fix: export SB-POSIX:MKSTEMP.
1929 * bug fix: SORT was not interrupt safe.
1930 * bug fix: XREF accounts for the last node of each basic-block as
1932 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1933 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1934 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1935 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1936 create obsolete instances in the case of redefinition or
1937 obsoletion of a superclass. (thanks to Andy Hefner)
1938 * bug fix: Support for the Alpha architecture has been revived; it had
1939 suffered somewhat from lack of maintenance since sbcl-1.0.
1940 * improvements to the Windows port:
1941 ** The system detects the codepage to use at startup, instead of
1942 using the value from the saved core. (thanks to Kei Suzuki)
1944 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1945 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1946 (see documentation for details.)
1947 * revived support for OpenBSD (contributed by Josh Elsasser)
1948 * partially fixed bug #108: ROOM no longer suffers from occasional
1949 (AVER (SAP= CURRENT END)) failures.
1950 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1951 bodies no longer cause a WARNING to be signalled. (reported by
1953 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1954 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1955 the bug in TRUNCATE.) (reported by Michael Weber)
1956 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1957 no samples. (reported by Andy Hefner)
1958 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1959 no longer appear as (NIL ...) frames in backtraces.
1960 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1961 is now actually exported from SB-EXT as documented. (reported by
1963 * bug fix: sb-aclrepl now correctly understands how to inspect
1964 single-floats on 64-bit platforms where single-floats are not boxed.
1965 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1966 yet been finalized. (reported by Levente Meszaros)
1967 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1968 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1969 SBCL-specific optimize qualities.
1971 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1972 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1973 an executable in the search path, and does so in the child
1974 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1975 been removed; it can be found in the CVS history, for somebody who
1976 needs that search behavior (see the manual).
1977 * minor incompatible change: compiler policy re. weakening type
1978 checks has changed: now type checks are weakened only if SAFETY < 2
1980 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1981 unparsing of directory pathnames as files. Analogously,
1982 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1983 filename to parse into a directory pathname.
1984 * enhancement: implicit generic function creation now signals a
1985 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1986 users can bind handlers for and muffle around calls to LOAD.
1987 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1988 to be used (using the default stream external format), and allows
1989 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1990 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1991 strings and vectors whose element-type or simplicity is not fully
1992 known at compile-time.
1993 * optimization: STRING-TRIM and related functions no longer allocate
1994 a new string when no trimming needs to be performed. These functions
1995 are also faster than before when the input string has been declared
1997 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1998 * optimization: READ-LINE is significantly faster for files containing
2000 * optimization: non-open coded uses of character comparison operators
2001 (e.g. char=) no longer cons when called with more than one parameter
2002 on platforms supporting dynamic-extent allocation.
2003 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2004 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2005 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2007 * bug fix: some sequence functions elided bounds checking when
2009 * bug fix: too liberal weakening of union-type checks when SPEED >
2011 * bug fix: more bogus fixnum declarations in ROOM implementation
2014 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2015 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2016 :SYNCHRONIZED argument, which makes the hash-table safe for
2017 concurrent accesses (but not iteration.) See also:
2018 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2019 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2020 * optimization: CONCATENATE on strings is an order of magnitude faster
2021 in code compiled with (> SPEED SPACE).
2022 * optimization: SUBSEQ is ~50% faster on lists.
2023 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2024 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2025 END is smaller then START.
2026 * bug fix: SB-PROFILE will no longer report extra consing for nested
2027 calls to profiled functions.
2028 * bug fix: ROOM implementation had bogus fixnum declarations which
2029 could cause type-errors when calling ROOM on large images.
2030 * bug fix: if file compilation is aborted, the partial fasl is now
2031 deleted, and COMPILE-FILE returns NIL as the primary value.
2032 * bug fix: number of thread safety issues relating to SBCL's internal
2033 hash-table usage have been fixed.
2034 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2035 be returned from its body when the values were being returned
2036 using unknown-values return convection and the W-P-O was wrapped
2037 inside an UNWIND-PROTECT.
2038 * bug fix: sb-posix should now compile again under Windows, enabling
2039 slime to work again.
2041 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2042 * incompatible change: hash-table accessor functions are no longer
2043 automatically protected by locks. Concurrent accesses on the same hash-table
2044 from multiple threads can give inconsistent results or even corrupt the
2045 hash-table completely. Multi-threaded applications should do their own
2046 locking at the correct granularity. In the current implementation it is
2047 still safe to have multiple readers access the same table, but it's not
2048 guaranteed that this property will be maintained in future releases.
2049 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2050 and will signal an error at runtime.
2051 * enhancement: SB-THREAD package now exports a semaphore interface.
2052 * enhancement: CONS can now stack-allocate on x86 and
2053 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2055 * enhancement: nested lists can now be stack allocated on
2056 platforms providing stack allocation support.
2057 * enhancement: dynamic-extent support has been extended to support
2058 cases where there are multiple possible sources for the stack
2060 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2061 if the mutex is uncontested on Linux.
2062 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2063 as specified by the CLHS. (thanks to Tobias Rittweiler)
2064 * bug fix: NaN comparison now works on x86-64.
2065 * bug fix: CLOSE :ABORT T on a stream with pending output now
2067 * bug fix: instances of non-standard metaclasses using standard
2068 instance structure protocol sometimes missed the slot type checks
2070 * bug fix: known functions can be inlined in high-debug code.
2072 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2073 * minor incompatible change: the MSI installer on Windows no longer
2074 associates .lisp and .fasl files with the installed SBCL.
2075 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2076 on Windows. (thanks to Luis Oliviera)
2077 * new feature: SB-CLTL2 contrib module now implements
2078 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2079 * optimization: scavenging weak pointers is now more efficient,
2080 requiring O(1) instead of O(N) per weak pointer to identify
2081 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2082 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2083 method bodies using constant slot-names when the first argument is
2084 a specializer parameter for the method.
2085 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2086 names, when the class of the instance is a direct instance
2087 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2088 as slow as the constant slot-name case.)
2089 * optimization: member type construction is now O(N) instead
2091 * optimization: UNION and NUNION are now O(N+M) for large
2092 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2094 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2095 now more readable in environments like Slime which display it.
2096 (thanks to Tobias C. Rittweiler)
2097 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2098 was able to infer the correct argument type for the object on which
2099 the CAS operation was being performed.
2100 * bug fix: copy propagation interfered with parallel assignment
2101 semantics in local calls. (reported by Paul Khuong)
2102 * bug fix: the signed modular fixnum shift compiled to wrong code on
2103 x86 and x86-64. (spotted by a slight modification to some of
2106 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2107 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2108 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2109 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2111 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2112 and generic function now print the object identity for anonymous
2113 instances. (thanks to Attila Lendvai)
2114 * enhancement: as an extension to MOP, SBCL now supports SETF of
2115 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2116 (thanks to Attila Lendvai)
2117 * enhancement: sb-cover has an alternate annotation mode which puts
2118 the form annotations at the car of the form, instead of annotating
2119 it completely. The benefit of this mode is that it shows better
2120 which forms were instrumented by the compiler.
2121 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2122 by printer control variables. (reported by Dan Corkill)
2123 * bug fix: system leaked memory when delayed output was performed by
2124 the OS in smaller chunks then expected. (thanks to David Smith)
2125 * bug fix: system leaked memory when file streams were not closed
2127 * bug fix: large objects written to slow streams that were modified
2128 after the write could end up with the modified state written to
2129 the underlying file descriptor.
2130 * bug fix: multiple threads operating in parallel on the same stream
2131 could cause buffer-overflows.
2132 * bug fix: source location information is stored correctly
2133 (broken since 1.0.6). This bug would generally show up as the
2134 Slime debugger highlighting the wrong form when the sldb-show-source
2136 * bug fix: Branch forms are again annotated as branches in the sb-cover
2138 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2139 on x86-64. (reported by Gregory Vanuxem)
2140 * bug fix: EQUALP could return wrong results for structures with raw
2141 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2142 word). (reported by Vjacheslav Fyodorov)
2143 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2146 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2147 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2148 atomic compare-and-swap operations on threaded platforms.
2149 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2150 allows assigning a global minimum value to optimization qualities
2151 (overriding proclamations and declarations).
2152 * enhancement: closed over variables can be stack-allocated on x86
2154 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2156 * optimization: slot definition lookup is now O(1). This speeds up
2157 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2158 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2159 * optimization: ASSOC and MEMBER can now be open-coded for all
2160 combinations of keyword arguments when second argument is constant
2161 and SPEED >= SPACE. In other cases a specialized version is
2163 * bug fix: using obsoleted structure instances with TYPEP and
2164 generic functions now signals a sensible error.
2165 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2166 (reported by Kristoffer Kvello)
2167 * bug fix: backtrace construction is now more careful when making
2168 lisp-objects from pointers on the stack, to avoid creating bogus
2169 objects that can be seen by the GC.
2170 * bug fix: defaulting of values in contexts expecting more than 7
2171 variables now works on x86-64. (reported by Christopher Laux)
2172 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2174 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2175 as the property-list of a symbol.
2176 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2177 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2178 situations requested, are once again file-compileable. (reported
2181 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2182 * MOP improvement: support for user-defined subclasses of
2183 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2184 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2185 the expansion of DEFMETHOD, is responsible for generating a form
2186 which creates a list of specializers when evaluated. Additional
2187 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2188 debugging and introspective support.
2189 * minor incompatible change: the (unsupported) spinlock interface
2190 has changed: free spinlock now has the value NIL, and a held spinlock
2191 has the owning thread as its value.
2192 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2193 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2195 * enhancement: name of a socket-stream is now "a socket" instead of
2196 "a constant string".
2197 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2198 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2199 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2200 for generic functions. (Thanks to Tobias C. Rittweiler)
2201 * optimization: bignum printing speed has been improved by 20-40%
2202 (depending on the bignum size.)
2203 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2205 * bug fix: the cache used by the CLOS to store precomputed effective
2206 methods, slot offsets, and constant return values is now thread and
2208 * bug fix: generic function dispatch function updating is now thread
2209 and interrupt safe (in the sense that the known issues have been
2211 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2212 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2213 * bug fix: asdf systems with dependencies to the SB-POSIX or
2214 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2215 * bug fix: interrupt safety of applicable method computation has been
2218 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2219 * new contrib: sb-cover, an experimental code coverage tool, is included
2220 as a contrib module.
2221 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2222 significantly faster.
2223 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2224 produce more efficient code on x86-64 if the compiler can determine
2225 that (+ INDEX <constant>) does not require a bounds check and FOO
2226 has an element type at least 8 bits wide.
2227 * enhancement: a new, experimental synchronous timeout facility is
2228 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2229 * enhancement: when a symbol name conflict error arises, the
2230 conflicting symbols are always printed with a package prefix.
2231 (thanks to Kevin Reid)
2232 * enhancement: stepping is now once again supported on the SPARC and
2233 MIPS platforms. (It is also now more likely to work on CheneyGC
2235 * enhancement: sb-sprof can now also track and report accurate call
2237 * bug fixes: the treatment of non-standard subclasses of
2238 SB-MOP:SPECIALIZER is more correct.
2239 * incompatible change: PURIFY no longer copies the data from the
2240 dynamic space into the static and read-only spaces on platforms
2241 that use the generational garbage collector
2242 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2244 * bug fix: GC race condition occasionally resulting in crashes with
2245 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2247 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2249 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2250 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2251 * bug fix: an asynchronous interrupt could previously leave the
2252 system running with GC inhibited.
2253 * bug fix: a DECLARE form evaluated at top-level now causes an error
2254 rather than silently (or verbosely) returning NIL.
2255 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2256 result in a error being signalled due to source form lookup errors.
2257 (reported by Peter Graves)
2259 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2260 * incompatible change: removed writer methods for host-ent-name,
2261 host-ent-addresses -- changing the values did not update the DNS
2263 * minor incompatible change: changed experimental JOIN-THREAD interface
2264 * documentation: the manual now lists reader and writer methods
2265 in class slot documentation sections. (thanks to Richard M Kreuter)
2266 * documentation: unwinding from asyncronous events has been
2267 documented as unsafe.
2268 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2269 in multithreaded application code.
2270 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2271 platforms. (thanks to James Anderson for the optimization hint)
2272 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2274 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2275 variants no longer cons.
2276 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2277 their NOT- variants no longer cons.
2278 * optimization: EQUAL hash tables no longer use SXHASH for objects
2279 of all data types, but instead use an EQL hash for types for which
2280 EQUAL is the same as EQL.
2281 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2282 are significantly faster.
2283 * optimization: new STRING-OUTPUT-STREAM implementation is much
2284 faster for large outputs and conses 30% less on average.
2285 * enhancement: XREF information is now collected for references made
2286 to global variables using SYMBOL-VALUE and a constant argument.
2287 * enhancement: SIGINT now causes a specific condition
2288 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2289 * bug fix: FILE-POSITION used to signal an error in some cases where
2290 ANSI requires it to return NIL.
2291 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2292 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2293 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2295 * bug fix: bad type declaration in the CLOS implementation has
2296 been fixed. (reported by James Anderson)
2297 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2298 (thanks to Lutz Euler)
2299 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2300 required by the CLHS. (reported by Samium Gromoff)
2301 * bug fix: dead unbound variable references now signal an error.
2302 (reported by Marco Monteiro)
2303 * bug fix: / with an unused value was being deleted in safe code.
2304 (thanks to Marco Monteiro and Kevin Reid)
2305 * bug fix: number of characters that can be written onto a single
2306 line in a file is unlimited.
2307 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2308 been fixed by inhibiting interrupts for when GC is disabled.
2309 * bug fix: some interrupt safety issues with GETHASH, (SETF
2310 GETHASH), CLRHASH and REMHASH have been fixed.
2311 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2312 specifier no longer causes infinite recursion.
2313 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2314 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2315 * bug fix: an &environment argument with the correct variable information
2316 is passed to macros that are expanded during byte compilation.
2317 (reported by Samium Gromoff)
2318 * bug fix: a logic error was causing the hash function for bignums to
2319 have excessive amounts of collisions. (reported by Faré Rideau)
2320 * bug fix: modifying the contents of an array could change the return
2321 value of SXHASH on that array, which is only allowed for strings
2322 and bit vectors. (bug introduced in 0.9.16)
2323 * improvement: the x86-64/darwin port now passes all tests (except
2324 for the debugger tests) but should still be considered
2325 experimental until this is fixed.
2326 * improvement: a style-warning is signaled for CASE (etc) clauses with
2327 duplicate keys. (thanks to Kevin Reid)
2328 * improvement: macos/x86 and macos/x86-64 now use mach exception
2329 handlers for dealing with illegal instructions (for trapping and
2330 error handling) and memory protection violations (for GC).
2332 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2333 * new platform: experimental support for x86-64/darwin (MacOS).
2334 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2335 and getnameinfo sockets functions are used instead of gethostbyaddr
2336 and gethostbyname, on platforms where the newer functions are available.
2337 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2339 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2340 don't print the startup banner, but behave as if --noinform was passed
2341 as a command line argument. (thanks to Kevin Reid)
2342 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2343 * optimization: code using alien values with undeclared types is much faster.
2344 * optimization: the compiler is now able to open code SEARCH in more cases.
2345 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2346 * bug fix: using standardized COMMON-LISP special variables as loop
2347 variables no longer signals bogus package lock violations. (reported
2349 * bug fix: declaring local loop variables to be of a range-limited type
2350 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2351 (reported by Andras Simon)
2352 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2353 bugs remain on x86-64.)
2354 * bug fix: the #= and ## reader macros now interact reasonably with
2355 funcallable instances.
2356 * bug fix: type-checks for function arguments were compiled using the
2357 compiler policy settings of the wrong lexical environment (in 1.0.2
2359 * bug fix: SHADOW accepts characters as string designators, as required
2360 by the spec (thanks to Eric Marsden)
2361 * bug fix: fixed GC safety issues when foreign functions are called with
2362 non-base strings as arguments
2363 * bug fix: more consistent error output for fatal-compiler-warnings, like
2365 * bug fix: functions with proper names were showing up as NIL in
2366 backtraces (reported by Edi Weitz, regression in 1.0.2)
2368 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2369 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2370 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2371 produce more efficient code on the x86 if the compiler can determine
2372 that (+ INDEX <constant>) does not require a bounds check and FOO
2373 has an element type at least 8 bits wide.
2374 * bug fix: references to undefined variables are handled the same way
2375 in toplevel forms as in the normal compiler
2376 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2378 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2379 (thanks to Jon Buller)
2380 * improvement: faster compilation times for complex functions
2381 * improvement: added readlink support to SB-POSIX (thanks to Richard
2384 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2385 * improvement: experimental support for mach exception handling on
2386 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2388 * improvement: support for GBK external format.
2389 (thanks to Chun Tian (binghe))
2390 * improvement: the debugger now displays variables that have been closed
2391 over, in code compiled with (DEBUG 2) or higher
2392 * improvement: support for executable cores on NetBSD (thanks to
2394 * new feature: added a RESTART-FRAME debugger command
2395 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2396 be used to provide an implementation for FILE-POSITION on Gray streams
2397 (thanks to Eric Marsden)
2398 * new feature: add syslog, openlog and closelog support to SB-POSIX
2399 (thanks to Richard Kreuter)
2400 * optimization: the function call overhead in code compiled with
2401 a high DEBUG optimization setting is significantly
2402 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2403 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2404 (thanks to Tony Martinez)
2405 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2406 evaluated once (reported by Kevin Reid)
2407 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2408 works again (thanks to Kilian Sprotte)
2409 * bug fix: an error is signaled for tagbodies with duplicate tags
2410 (thanks to Stephen Wilson)
2411 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2412 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2413 stack frames from alien callbacks.
2414 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2415 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2416 65k pages (thanks to David Woodhouse)
2417 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2419 changes in sbcl-1.0.1 relative to sbcl-1.0:
2420 * new platform: FreeBSD/x86-64, including support for threading.
2421 * new feature: the compiler stores cross-referencing information
2422 about function calls (who-calls), macroexpansion (who-macroexpands)
2423 and special variables (who-binds, who-sets, who-references) for code
2424 compiled with (< SPACE 3). This information is available through the
2425 sb-introspect contrib.
2426 * new feature: users may subclass SEQUENCE, and have instances of
2427 these classes interoperate with standard Common Lisp functions if
2428 a number of methods are defined. (This feature is experimental
2429 and the interface subject to change based on feedback from SBCL
2430 users and the general community)
2431 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2432 x86/x86-64, rather than the previous fixed depth of 8
2433 * improvement: another pthread back-end of mutex "pthread-futex".
2434 * bug fix: non-ascii command-line arguments are processed correctly
2435 (thanks to Yaroslav Kavenchuk)
2436 * bug fix: non-required arguments were not passed correctly when a method
2437 defined using DEFMETHOD was called from a mop-generated method using
2438 CALL-NEXT-METHOD (reported by Pascal Costanza)
2439 * bug fix: recursion is now permitted in accessors through
2440 SLOT-UNBOUND. (reported by Pascal Costanza)
2441 * bug fix: an error was signaled at startup if the HOME environment
2442 variable was defined, but had an empty value (reported by Peter Van Eynde)
2443 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2444 signal a PROGRAM-ERROR, not a BUG.
2445 * bug fix: SB-POSIX:READDIR works when built with large file support.
2446 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2448 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2449 for better automatic indentation support. (thanks to Matt Pillsbury)
2450 * optimization: loading generic functions no longer takes O(n^2) time,
2451 proportional to the amount of methods in the generic function
2452 (reported by Todd Sabin and Jeremy Brown)
2453 * optimization: the FIND and POSITION family of sequence functions
2454 are significantly faster on arrays whose element types have been
2456 * improvements to the Windows port:
2457 ** Intermittent heap corruption problems have been fixed. (thanks
2458 to Alastair Bridgewater)
2459 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2461 ** Lisp is able to unwind foreign exception frames from alien
2462 callbacks. (thanks to Alastair Bridgewater)
2464 changes in sbcl-1.0 relative to sbcl-0.9.18:
2465 * improvement: experimental support for threading on FreeBSD/x86.
2466 (thanks to NIIMI Satoshi)
2467 * improvement: runtime option --dynamic-space-size can be used
2468 to set the size of the dynamic space reserved on startup.
2469 * improvement: floating point modes in effect are now saved in
2470 core, and restored on startup.
2471 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2472 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2473 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2474 threads are not running after *SAVE-HOOKS* have run.
2475 * improvement: writes to CLOS instance slots are type-checked in code
2476 compiled with (SAFETY 3)
2477 * improvement: floating-point exception handling on FreeBSD (thanks to
2479 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2480 (thanks to Zach Beane)
2481 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2483 * improvement: added support for the Shift-JIS external format.
2484 (contributed by NIIMI Satoshi)
2485 * improvement: callbacks are supported on Linux/PPC. (thanks to
2487 * bug fix: compiler bug triggered by a (non-standard) VALUES
2488 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2489 * bug fix: file compiler no longer confuses validated and already
2490 dumped structurres. (reported by Kaersten Poeck)
2491 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2492 fill-pointer signals a type-error as required. (thanks to
2494 * bug fix: disassemly of funcallable instances works.
2495 * bug fix: single stepping on PPC.
2496 * bug fix: fix thread-safety problems in the type system (generally
2497 manifesting as nonsensical errors like "STRING is a bad type specifier
2498 for sequences" or "The value 1 is not of type FIXNUM")
2499 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2500 (reported by Josip Gracin)
2501 * bug fix: an error is signaled for attempts to displace arrays with
2502 incompatible element types (thanks to Mario Mommer)
2503 * bug fix: more correct handling of wide characters in debug info
2504 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2505 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2506 and don't cause extra consing
2507 * optimization: MAP and MAP-INTO are significantly faster on vectors
2508 whose elements types have been declared.
2509 * Improvements to SB-SPROF:
2510 ** Support for allocation profiling
2511 ** Reduced profiling overhead, especially for long profiling runs
2512 * Improvements to the Windows port:
2513 ** floating point exceptions are now reported correctly.
2514 ** stack exhaustion detection works partially.
2515 ** more accurate GET-INTERNAL-REAL-TIME.
2516 ** better RUN-PROGRAM behaviour in case of errors in the child
2518 ** PROBE-FILE now simplifies pathnames correctly.
2519 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2520 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2521 1st 1970 (although time timezone data will be unreliable).
2522 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2524 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2525 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2526 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2528 * bug fix: two potential GC deadlocks affecting threaded builds.
2529 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2530 returns T (reported by Anton Kazennikov)
2531 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2532 with non-variable places
2533 * bug fix: remove a race condition in the setting of
2534 funcallable-instance functions, this should make threaded CLOS
2535 code more stable against memory faults.
2536 * bug fix: corruption of specials when unbinding is interrupted by an
2537 asynchronous unwind (reported by Hannu Koivisto)
2538 * improvement: the debugger will now also display local variables that
2539 are only used once, for code compiled with a DEBUG optimization quality
2542 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2543 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2544 * incompatible change: External-format support for FFI calls. The
2545 SB-ALIEN:C-STRING no longer implies an ASCII
2546 external-format. Instead the string is subject to external-format
2547 conversion. Additionally return values of type SB-ALIEN:C-STRING
2548 are by default of type (SIMPLE-ARRAY CHARACTER), not
2549 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2550 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2551 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2552 * incompatible change: SB-EXT package no longer contains the
2553 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2554 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2556 * incompatible change: the single-stepper is no longer available
2557 on Alpha, Mips and Sparc platforms.
2558 * minor incompatible change: the direct superclasses of
2559 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2560 not (STANDARD-OBJECT FUNCTION). This makes the
2561 class-precedence-lists of GENERIC-FUNCTION and
2562 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2564 * minor incompatible change: the default stream external format on
2565 non-unicode SBCL is no longer detected from the locale, but is always
2567 * new feature: Add a version of evaluator that uses an interpreter instead
2568 of the compiler. EVAL still uses the compiler by default, to switch it
2569 to use the interpreter, set the value of the variable
2570 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2571 * minor incompatible change: the single-stepper REPL has been merged
2572 with the normal debugger (see the "Stepping" heading of the debugger help
2573 for more details). The debugger command STEP will no longer switch
2574 to the single-stepper REPL.
2575 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2576 for a type now works.
2577 * bug fix: loading of default sysinit file works. (thanks to Leonid
2579 * bug fix: better detection of circularities in the file-compiler.
2580 (reported by Marco Monteiro)
2581 * bug fix: the CL pathname functions now work with files that have
2582 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2583 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2584 systems with Unix98 pty semantics.
2585 * bug fix: ASDF-INSTALL will now work with bsd tar.
2586 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2588 * bug fix: timers expiring in dead threads no longer cause a
2589 type-error (reported by Paul "Nonny Mouse").
2590 * bug fix: thanks to more lightweight single-stepper instrumentation,
2591 code compiled with (DEBUG 3) will compile and execute significantly faster,
2592 and will have more accurate type-inferencing than before
2593 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2594 whose bindings are modified
2595 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2596 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2597 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2598 CL:SOFTWARE-VERSION with proper version
2600 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2601 * feature: implemented the READER-METHOD-CLASS and
2602 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2603 as specified by AMOP.
2604 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2606 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2607 (thanks to Lutz Euler)
2608 * optimization: hashing of general arrays and vectors has been
2609 improved. (reported by Any Fingerhut)
2610 * enhancement: SB-INTROSPECT is now able to find definitions of
2611 profiled functions. (thanks to Troels Henriksen)
2612 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2613 as well, allowing compiler-macros for SETF-functions to expand.
2614 * enhancement: step-instrumentation no longer wraps known
2615 single-value functions with multiple-value context, allowing
2616 better type inference.
2617 * fixed bug #337: use of MAKE-METHOD in method combination now works
2618 even in the presence of user-defined method classes. (reported by
2619 Bruno Haible and Pascal Costanza)
2620 * fixed bug #339(c): if there are applicable methods not part of any
2621 long-form method-combination group, call INVALID-METHOD-ERROR.
2622 (reported by Bruno Haible)
2623 * fixed bug #361: the :FUNCTION initarg in the protocol for
2624 initialization of methods can now be used to override
2625 internally-produced optimized functions. (reported by Bruno
2627 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2628 system-provided lambda expression no longer cause warnings about
2629 unbound #:|pv-table| symbols.
2630 * bug fix: improved the handling of type declarations and the
2631 detection of violations for keyword arguments with non-constant
2633 * bug fix: potentially erronous calls to PATHNAME and
2634 MERGE-PATHNAMES were being flushed in some cases.
2635 (reported by Richard Kreuter)
2636 * bug fix: compiled calls to TYPEP were mishandling obsolete
2637 instances. (reported by James Bielman and Attila Lendvai)
2638 * bug fix: format strings with ~> without matching ~< no longer
2639 trigger an AVER, but signal an understandable error instead.
2640 (reported by Antonio Martinez)
2641 * bug fix: specifying an output-file without a pathname-type for
2642 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2643 of input-file instead of "fasl". (reported by Robert Dodier)
2644 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2645 (reported by James Y Knight).
2646 * bug fix: compiler-macros-function did not consider the environment
2647 argument for shadowing by local functions.
2648 * bug fix: compiler-macros expansion was inhibited by local INLINE
2650 * bug fix: inline expansions of known functions were subject to
2651 step-instrumentation in high debug policies, leading to problems
2652 with type-inference.
2653 * bug fix: compiler failed to differentiate between different CONS
2654 types in some cases.
2655 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2656 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2657 * bug fix: #368: incorrect use of expressed vs. upgraded array
2659 * bug fix: #306a: more precise unions of array types.
2660 * thread-safety improvements:
2661 ** CONDITION-WAIT could return early on Linux, if the thread was
2662 interrupted and subsequently continued with SIGCONT.
2663 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2665 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2666 * added support for the ucs-2 external format. (contributed by Ivan
2668 * minor incompatible change: pretty printing of objects of type
2669 (cons symbol) is, in the default pprint-dispatch-table, now
2670 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2672 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2673 called later in a class's lifetime, possibly as late as when the
2674 first instance of the class is created. Previously,
2675 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2676 class became finalizeable.
2677 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2678 for multibyte external-format streams. (thanks to "vbzoli")
2679 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2680 with :ALLOCATION :CLASS inherited from superclasses of the
2682 * fixed bug: anonymous classes can now be created using the :NAME
2683 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2684 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2685 * fixed bug: core-files saved with :EXECUTABLE T can again be
2686 executed when SBCL_HOME isn't set. (reported by James Knight)
2687 * fixed bug: toplevel LOCALLY forms with declarations could
2688 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2689 * fixed bug: printing from several different threads using different
2690 values of *print-case* could cause invalid output, due to
2691 some internal special variables of the printer not being bound
2692 thread-locally (reported by Max Mikhanosha)
2693 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2694 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2695 (reported by Pascal Costanza)
2696 * fixed bug: FINALIZE-INHERITANCE is called from
2697 REINITIALIZE-INSTANCE on classes when the class has previously
2698 been finalized, as required by AMOP.
2699 * minor code generation optimizations:
2700 ** better register allocation in CLOS dispatching functions
2701 ** overflow detection when coercing signed bytes to fixnums on x86-64
2702 ** is now implemented with one IMUL instruction instead of three shifts
2703 ** more efficient bit-vector access on x86 and x86-64
2704 ** more efficient access to raw structure slots on x86 and x86-64
2705 * fixed some bugs revealed by Paul Dietz' test suite:
2706 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2707 return its argument.
2709 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2710 * feature: thread support on Solaris/x86, and experimental thread support
2712 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2714 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2715 default method for SLOT-UNBOUND.
2716 * minor incompatible change: prevent the user from specializing the
2717 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2718 somewhat counter to the intent of the protocol, I (CSR) think, and
2719 additionally it just doesn't work in SBCL as currently
2720 implemented, thanks to optimizations (that are always valid for
2721 the other three SLOT-VALUEish functions, but not for the setter).
2722 * minor incompatible change: the :SB-LDB feature is now enabled by
2723 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2724 the low-level debugger.
2725 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2726 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2727 down to an SB-SYS:FD-STREAM, allowing direct communication in
2728 more cases. Temporary files and pipes are still used as a fallback
2730 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2731 on the non-reentrant C functions localtime(3) and gmtime(3).
2732 * bug fix: global optimization policy was not visible in LOCALLY and
2734 * bug fix: class objects can be used as specializers in methods.
2735 (reported by Pascal Costanza)
2736 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2737 with a type error. (reported by blitz_ on #lisp)
2738 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2739 failed with a type error. (reported by Pascal Bourguignon)
2740 * bug fix: merging pathnames against defaults with :DIRECTORY
2741 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2742 (reported by James Y Knight)
2743 * bug fix: saving large (>2GB) cores on x86-64 now works
2744 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2745 constant index and a (simple-array (signed-byte 32)) array
2746 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2747 error (patch by Robert J. Macomber)
2748 * feature: TIME now displays the amount of run-time spent in GC
2749 * bug fix: The debugger now does a better job of respecting
2750 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2751 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2752 workaround for bug 403.)
2753 * bug fix: floating point exception handling now works on FreeBSD
2754 (thanks to NIIMI Satoshi)
2755 * fixed some bugs revealed by Paul Dietz' test suite:
2756 ** MISC.641: LET-conversion were not supposed to work in late
2758 * improvements to the Win32/x86 port:
2759 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2760 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2762 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2763 * new feature: source path information is generated for macro-expansion
2764 errors for use in IDE's like Slime (thanks to Helmut Eller)
2765 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2766 * bug fix: compiler does not loop forever on an invalid type in
2768 * improvement: compilation of most CLOS applications is significantly
2770 * optimization: added a limited bytecode compiler for simple toplevel
2771 forms, speeding up compilation and FASL loading
2772 * bug fix: the statistical profiler now properly distinguishes anonymous
2775 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2776 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2777 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2778 into subclasses of the finalized class. Now user calls to
2779 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2780 system return before any subclasses are finalized.
2781 * minor incompatible change: The reader no longer ignores errors
2782 regarding non-existent packages in #+ and #- feature tests.
2783 * new feature: command line options --no-sysinit, --no-userinit to
2784 inhibit loading the corresponding init files
2785 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2786 for sending data through UDP sockets (thanks to François-René Rideau)
2787 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2788 error is signalled instead (thanks to François-René Rideau)
2789 * minor incompatible change: Error signalling behaviour of lexical
2790 operations violating package locks has changed slightly. Refer to
2791 documentation on package locks for details.
2792 * enhancement: EVAL can process IF-expressions without resorting to the
2794 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2795 constant-folded properly due to missing out-of-line functions.
2796 (reported by Mika Pihlajamäki)
2797 * bug fix: LISTEN sometimes returned T even in cases where no data was
2798 immediately available from the stream
2799 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2800 were reversed. (reported by Levente Mészáros)
2801 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2802 when given a vector displaced to an adjustable array. (reported
2804 * bug fix: derivation of float boundaries from numbers outside the
2805 appropriate float range (reported by John Wiseman)
2806 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2808 * bug fix: precomputing cache entries for generic functions with
2809 some subclasses of specializers as yet invalid does not attempt to
2810 fill a cache line with a negative offset. (reported by Levente
2812 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2813 allow condition class objects as arguments to DOCUMENTATION and
2814 (SETF DOCUMENTATION); only find and set documentation for
2815 structure names for the STRUCTURE doc-type. (suggested by Gary
2817 * improvements to the Win32/x86 port:
2818 ** (user-homedir-pathname) and default initialization file
2819 locations now know about the user's "Documents and Settings"
2820 directory (thanks to Yaroslav Kavenchuk)
2821 ** run-program is implemented (thanks to Mike Thomas)
2822 ** sockets support (thanks to Timothy Ritchey)
2823 ** better backtrace support (thanks to Alastair Bridgewater)
2824 ** sb-grovel supported
2825 ** asdf-install and sb-posix work somewhat
2826 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2827 * improvements to the Solaris/x86 port:
2828 ** works on Solaris 11/Solaris Express
2829 ** floating-point exception handling support
2830 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2831 * fixed some bugs revealed by Paul Dietz' test suite:
2832 ** REMOVE-METHOD returns its generic function argument even when
2833 the method is not one of the generic functions' methods.
2834 ** objects declared as MEMBER types can be admissible arguments to
2835 structure accessors.
2836 ** printing characters should simply be printed by the FORMAT ~:C
2838 ** compiler failure when compiling functions with hairy constant
2839 defaults for optional parameters.
2840 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2841 function, which is already optimized.
2843 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2844 * new platform: experimental support for SBCL x86/Darwin, including
2845 MacOS X 10.4.5 on Intel.
2846 * new feature: Unicode character names are now known to the system
2847 (through CHAR-NAME and NAME-CHAR).
2848 * new feature: the filesystem location of SBCL's core file is
2849 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2850 * minor incompatible change: the contrib modules SB-POSIX and
2851 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2852 this change is to make it easier to distribute
2853 location-independent binaries.
2854 * bug fix: as implied by AMOP, standardized classes no longer have
2855 slots named by external symbols of public packages. (reported by
2857 * optimization: calling functions via constant symbols -- as in
2858 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2859 via the function object as in (FUNCALL #'FOO).
2860 * optimization: on x86 and x86-64, the calling convention for the
2861 case of dealing with an unknown number of values has been altered
2862 to be friendlier to the prediction heuristics implemented,
2863 particularly with reference to CALL and RET pairing. (thanks to
2864 Alastair Bridgewater)
2865 * optimization: on x86, the code for access to thread-local symbol
2866 values and binding/unbinding of thread-local symbols is smaller.
2867 (thanks to Alastair Bridgewater)
2868 * enhancement: CONSTANTP is now able to determine constantness of
2869 more complex forms, including calls to constant-foldable standardized
2870 functions and some special forms beyond QUOTE.
2871 * fixed bug: occasional GC crashes on Solaris/x86
2872 * optimization: x86-64 supports stack allocation of results of simple
2873 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2874 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2875 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2876 (thanks to James Knight)
2877 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2878 by the standard (thanks to Stephen Compall)
2880 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2881 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2882 be used for bundling the runtime and the core file into one
2883 executable binary. This feature is not currently supported on all SBCL
2884 platforms. (thanks to James Bielman and NIIMI Satoshi)
2885 * new feature: a generational or ephemeral garbage collector is now
2886 the default on the PowerPC platform (both Linux and Darwin). The
2887 old Cheney (stop and copy) collector is a build-time option.
2888 (thanks to Cyrus Harmon, after Raymond Toy)
2889 * minor incompatible change: the method by which SBCL finds its
2890 contributed modules has changed; it no longer relies on symbolic
2891 links from an $SBCL_HOME/systems directory, but searches directly
2892 in the subdirectories of $SBCL_HOME.
2893 * enhancement: the dynamic heap size on the Linux/PPC platform is
2894 markedly larger, even using the older Cheney garbage collector.
2895 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2896 certain complicated string types. (reported by Gary King)
2897 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2898 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2899 * fixed bug: DOCUMENTATION on structures no longer signals an
2900 error if no structure type of the right name exists. (reported by
2902 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2903 applicable non-standard primary or :AROUND method on
2904 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2905 no longer cause unbound variable errors. (reported by Kevin Reid)
2906 * fixed bug: metacircle resolution in cases where methods have slots
2907 added before the slots from STANDARD-METHOD. (reported by Jean
2909 * fixed bug: the Power PC assembly code for calling into lisp
2910 sometimes computed its return address wrongly (depending on the
2911 15th bit of the address, fixed at link time). This used to
2912 manifest itself in a segmentation violation while building PCL.
2913 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2914 many others over the years)
2915 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2916 the stack pointer (treated as a signed integer) is negative.
2917 (thanks to Peter van Eynde)
2919 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2920 * new platform: experimental support for the Windows operating
2921 system has been added. (thanks to Alastair Bridgewater)
2922 * fixed several bugs in and robustified the PPC FFI (including
2923 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2924 * bug fix: allow non-simple string symbol names (reported by Paul
2926 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2928 * bug fix: saving a core corrupted callbacks on x86/x86-64
2929 * bug fix: closed a loophole in metacircularity detection and
2930 grounding in the PCL implementation of CLOS.
2931 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2932 (reported by tomppa on #lisp)
2933 * bug fix: clear the direction flag on Lisp -> C transitions, as
2934 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2935 (reported by Andrej Grozin and Hendrik Maryns)
2936 * optimization: major improvements to GC efficiency on GENCGC platforms
2937 * optimization: faster implementation of EQUAL
2938 * optimization: emit more efficient opcodes for some common
2939 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2940 * optimization: several other minor code-generation improvements on x86-64
2941 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2943 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2944 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2945 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2946 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2947 by ANSI as a generic function, and for consistency (SETF
2948 GENERIC-FUNCTION-NAME) is treated likewise.
2949 * fixed bug #233.b: make constraint propagation notice when a variable
2950 value is changed after it is referenced but before it is used
2951 * fixed bug #296: no more arbitrary behaviour from filenames with
2952 odd characters as --load arguments. (reported by Adam Warner)
2953 * fixed bug #390: :CHARACTER-SET pathname components now work as
2954 expected. (reported by Tim Daly Jr)
2955 * fixed bug #391: complicated :TYPE intersections in slot
2956 definitions no longer cause an error in PCL internals.
2957 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2958 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2959 returning the number of octets which would be written to the
2960 file-stream. (thanks to Robert J. Macomber)
2961 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2962 arguments to the internal stream functions. (thanks to David
2964 * bug fix: stack exhaustion is now handled on the x86/SunOS
2965 platform. (thanks to Daisuke Homma)
2966 * bug fix: more accurate ROOM results on GENCGC platforms
2967 * optimization: improved type inference for arithmetic-for
2968 index variables in LOOP
2969 * optimization: faster floating-point SQRT on x86-64
2970 * fixed some bugs revealed by Paul Dietz' test suite:
2971 ** DOCUMENTATION returns NIL instead of "" for method combinations
2972 that don't have a docstring
2974 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2975 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2976 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2977 therefore are not customizeable by user code (as seems to be at
2978 least permitted and maybe required by AMOP). As a consolation,
2979 however, the SBCL implementation of these functions now calls
2980 REINITIALIZE-INSTANCE as specified by AMOP.
2981 * bug fix: slot-definition documentation is propagated as per ANSI
2982 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2983 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2984 argument, as do eslotd initialization methods. (from Pascal
2985 Costanza's "Closer" project)
2986 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2987 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2989 * bug fix: it is now possible to have more than one subclass of
2990 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2991 (reported by Bruno Haible, Pascal Costanza and others)
2992 * bug fix: the dependent update protocol now works for generic
2993 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2994 and Pascal Costanza)
2995 * bug fix: condition-class instances corresponding to
2996 DEFINE-CONDITION forms are now created eagerly. (reported by
2997 Kalle Olavi Niemitalo on comp.lang.lisp)
2998 * bug fix: floating point printing is more accurate in some
2999 circumstances. (thanks to Simon Alexander)
3000 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3001 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3002 * bug fix: callbacks on OS X now preserve stack-alignment.
3003 (thanks to Cyrus Harmon)
3004 * enhancement: the x86-64 disassembler is much better at
3005 disassembling SSE instructions. (thanks to Lutz Euler)
3006 * enhancement: CHECK-TYPE on a variable now allows type-inference
3007 (thanks to Vincent Arkesteijn)
3008 * optimization: improved performance of EUC-JP external format.
3009 (thanks to NIIMI Satoshi)
3010 * optimization: performance improvements to IO on file streams of
3011 :ELEMENT-TYPE CHARACTER
3012 * optimization: much faster memory allocation on x86-64
3013 * optimization: faster garbage collections (latency and throughput)
3015 * optimization: faster bignum subtraction and division on x86 and x86-64
3016 (thanks to Lutz Euler)
3017 * optimization: more accurate type-inference for loops that use a
3018 floating point index variable or a negative step.
3020 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3021 * bug fix: add a workaround to SBCL looping infinitely at startup on
3022 Linux kernels with apparently buggy implementations of personality().
3023 (thanks to Svein Ove Aas)
3024 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3025 (thanks to David Lichteblau)
3026 * bug fix: local bindings shadow global symbol macros for
3027 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3028 * optimization: non-open coded uses of numeric comparison operators
3029 (e.g. >) no longer cons when called with more than one parameter
3030 on platforms supporting dynamic-extent allocation.
3031 * enhancement: saving cores with foreign code loaded is now supported
3032 on MIPS/Linux in addition to the previously supported platforms.
3033 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3034 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3035 * bug fix: division by zero in sb-sprof when no samples were collected
3036 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3037 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3038 (thanks to Alexander Kjeldaas)
3039 * new feature: ignoring the return values of destructive functions
3040 like NREVERSE signals a compile-time style-warning.
3041 (thanks to Kevin Reid)
3042 * new feature: the alignment of alien structure fields can be
3043 explicitly specified. (thanks to Cyrus Harmon)
3044 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3045 and dump core on SIGQUIT
3047 ** incompatible change: threads do not inherit values of specials
3048 from their parents (see manual)
3049 ** bug fix: threads stacks belonging to dead threads are freed by the
3050 next exiting thread, no need to gc to collect thread stacks anymore
3051 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3052 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3053 ** bug fix: dynamic variable and thread start related gc lossage
3054 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3056 * fixed some bugs revealed by Paul Dietz' test suite:
3057 ** SUBTYPEP is slightly more accurate on heinously complicated
3058 CONS types where some of the members have uncertain (in the
3059 NIL, NIL sense) type relationships to each other.
3061 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3062 no longer purified unless :PURIFY T is explicitly specified.
3063 ** Non-purified cores are significantly smaller than before
3065 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3066 * new feature: timers based on Zach Beane's excellent timer package
3067 * added support for the following external formats: koi8-u,
3068 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3069 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3070 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3071 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3072 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3073 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3074 * incompatible change: a threaded SBCL will no longer revert to
3075 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3076 * bug fix: interrupts are disabled until startup is complete; no
3077 more sigsegvs when receiving a signal to soon
3078 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3080 * bug fix: add a workaround for the memory randomization features in
3081 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3082 workaround will only be in effect on systems with the proc filesystem
3084 * bug fix: printing objects of type HASH-TABLE signals a
3085 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3087 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3088 have been running for over 50 days. (reported by Gilbert Baumann)
3089 * bug fix: the logic for getting names of functions gets less
3090 confused when confronded with alternate-metaclass
3091 funcallable-instances. (reported by Cyrus Harmon)
3092 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3093 consistent, even on internal alternate-metaclass objects.
3094 * bug fix: flush closure information collected by physical
3095 environment analysis prepass before the main pass. (bug reported
3097 * bug fix: compiler pack phase does not modify a hashtable, which is
3098 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3099 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3100 may be expanded. (reported by Alexander <malishev> on c.l.l)
3101 * bug fix: no more style-warnings when compiling code using LAST
3102 under high-SPEED low-SPACE settings. (reported by David Wallin
3104 * fixed some incompatibilities between SBCL's MOP and the MOP
3106 ** the METAOBJECT class is now implemented;
3107 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3108 STANDARD-OBJECT, as required;
3109 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3110 now compatible (as required by VALIDATE-SUPERCLASS); there
3111 remains a consistency requirement over the presence or absence
3112 of the FUNCTION class in the superclass list of finalized
3113 classes; see the manual for more details;
3114 ** the :AROUND method for COMPUTE-SLOTS on
3115 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3116 requested slot ordering.
3118 ** bug fix: parent thread now can be gc'ed even with a live
3120 ** bug fix: binding a special with PROGV to no value is not
3121 the same as that symbol not having been bound (thanks to
3123 ** bug fix: binding specials is thread safe (thanks to
3125 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3126 and SB-SPROF do not die with 'no handler for signal XX in
3127 interrupt_handle_now(..)' anymore
3128 ** bug fix: WITH-TIMEOUT works with multiple running threads
3129 * fixed some bugs revealed by Paul Dietz' test suite:
3130 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3131 the :method-class keyword argument.
3133 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3134 * new port: the Solaris operating system on x86 processors is now
3135 mostly supported, though some rough edges in the environment
3136 remain. (thanks to Daisuke Homma)
3137 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3138 space for its heap. (thanks to Thiemo Seufer)
3139 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3140 closures. (thanks to Thiemo Seufer)
3141 * minor incompatible change: eof selects abort in the debugger.
3142 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3143 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3145 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3146 deprecated, and will go away in a future revision of SBCL.
3147 * minor incompatible change: GC-ON and GC-OFF are no longer
3148 implemented with a counter, it does not matter how many times gc
3149 is switched on or off
3150 * bug fix: discriminating functions for generic function classes
3151 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3152 make invalid assumptions about method precedence order. (reported
3154 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3155 platforms. (thanks to Thiemo Seufer)
3156 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3157 * bug fix: correct pathname printing with printer escaping is on.
3158 (thanks to Kevin Reid)
3159 * bug fix: complex VOP definitions in "user-space" no longer trigger
3160 package locks. (reported by Zach Beane)
3161 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3162 for funcallable-instance functions, and is no different from
3164 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3165 characters in the current readtable. (reported by Nicholas Neuss)
3166 * bug fix: SUBTYPEP on various CONS types returns more a more
3167 accurate acknowledgment of its certainty.
3168 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3169 lists in some cases. This partially fixes bug 384.
3170 * flush all standard streams before prompting in the REPL and the
3172 * bug fix: signal handling and triggering gc do not conflict
3173 directly anymore, in particular a high frequency sb-sprof does
3174 not prevent gc from running
3175 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3176 approximation for timezone and DST information between the
3177 universal time epoch and the smallest negative 32-bit time_t.
3178 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3179 year 1899 so long as the encoded time is non-negative.
3180 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3181 the correct answer for non-constant rotate amounts when performing
3182 an inline 32-bit rotation.
3184 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3185 there is only one thread in the session
3186 ** bug fix: memory leak for streams created in one thread and
3187 written to in another
3188 ** bug fix: lockup when compiled with gcc4
3189 ** bug fix: race that allows the gc to be triggered when gc is
3191 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3192 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3194 ** bug fix: finished threads are gc'ed properly
3195 * fixed some bugs revealed by Paul Dietz' test suite:
3196 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3197 has arguments with a different set of applicable methods from
3198 the orignal arguments.
3199 ** The type error thrown by MAP now has a correct expected-type
3201 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3202 name a compiled function.
3203 ** Three MISC tests where a large bignum was improperly coerced to
3204 a float that couldn't represent that bignum during type
3205 derivation were fixed.
3206 ** SUBTYPEP can now handle types involving the negation of a
3207 list-form FUNCTION type.
3208 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3209 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3210 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3212 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3213 * New feature: Experimental support for bivalent streams: streams
3214 opened with :element-type :default now allow character and binary
3215 (unsigned-byte 8) I/O
3216 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3217 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3219 * bug fix: no more highly sporadic "couldn't check whether ~S is
3220 readable" when reading a stream and an interrupt hits in the middle
3221 of a select system call
3222 * compiler better recognizes complex arrays (reported by Eduardo
3224 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3225 for variables on SBCL built with linkage-tables. (reported by Luis
3227 * various error reporting improvements.
3228 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3229 (Thanks to Thiemo Seufer)
3230 * bug fix: nested reader invokations work correctly
3231 * bug fix: it is possible to have simultaneous references to foreign
3232 code and foreign data with the same name.
3234 ** added x86-64 support
3235 ** incompatible change: the threading api now works with thread
3236 objects instead of thread ids
3237 ** bug fix: threads are protected from signals and interruption when
3238 starting up or going down
3239 ** bug fix: a race where an exiting thread could lose its stack to gc
3240 ** bug fix: don't halt on infinite error in threads if possible
3241 ** fixed numerous gc deadlocks introduced in the pthread merge
3242 ** bug fix: fixed thread safety issues in read and print
3243 ** bug fix: debugger doesn't hang on session lock if interrupted at
3244 an inappropriate moment
3245 ** bug fix: run-program is now thread safe(r)
3246 ** bug fix: inner with-recursive-lock no longer releases the mutex
3247 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3248 * fixed some bugs revealed by Paul Dietz' test suite:
3249 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3250 EXPECTED-TYPE slots filled.
3251 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3253 ** MAKE-CONDITION accepts classes as type-designators.
3254 ** COMPILE may never return NIL.
3255 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3256 range before calling Unix time functions
3258 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3259 * numerous signal handling fixes to increase stability
3260 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3261 * minor incompatible change: we now correctly canonize default
3262 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3263 as per the MOP, rather than the historical (INITARG INITFUNCTION
3264 INITFORM). (reported by Bruno Haible)
3265 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3266 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3267 for more information.
3268 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3269 pathname is a directory pathname.
3270 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3271 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3273 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3274 :METACLASS argument in addition to a class name. (reported by
3275 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3276 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3277 (reported by Bruno Haible; patch from Gerd Moellmann)
3278 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3280 * bug fix: more cleanups to the floating point exception handling on
3281 x86-64 (thanks to James Knight)
3282 * bug fix: the compiler does not try to constant fold calls of
3283 COERCE and BIT-* functions when they return freshly constructed
3284 objects. (reported by Nikodemus Siivola and Paul Dietz)
3285 * optimization: improved the MIPS versions of generic (in the
3286 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3287 * optimization: direct conversion of (unsigned-byte 32) to floats on
3288 the PowerPC platform.
3289 * optimization: structure instances with raw slots now use less
3290 memory, and probably show better memory locality. (thanks to
3292 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3293 are treated as requests for stack allocation on the x86-64,
3294 Alpha-32, PPC and SPARC platforms.
3295 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3296 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3297 (thanks to Tony Martinez)
3299 ** gcing a dead thread can no longer lead to lockups
3300 ** threads block signals until they are set up properly
3301 ** errno is no longer shared by threads
3302 ** interrupt-thread restores the eflags register on x86
3303 ** fixed some lockups due to gc/thread interaction
3304 * fixed some bugs revealed by Paul Dietz' test suite:
3305 ** invalid dotted lists no longer raise a read error when
3306 *READ-SUPPRESS* is T
3307 ** signal an error if a symbol that names a declaration is used
3308 as the name of a type, or vice versa
3309 ** allow using the (declare (typespec var*)) abbreviation for
3310 (declare (type typespec var*)) with all type specifiers
3311 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3312 ** always return NIL from PPRINT-POP when OBJECT is NIL
3313 ** don't signal errors when pretty-printing malformed LABELS,
3314 FLET or MACROLET forms
3315 ** declarations in a DOLIST body are also in scope for the
3317 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3319 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3322 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3323 * fixed cross-compiler leakages that prevented building a 32-bit
3324 target with a 64-bit host compiler.
3325 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3326 opened with :IF-EXISTS :OVERWRITE.
3327 * fixed bug 281: error for an invalid qualifier in a short-form method
3328 combination method is not signalled until the faulty method is called.
3329 * bug fix: iteration variable type inferrer failed to deal with open
3330 intervals. (reported by Alan Shields)
3331 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3332 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3333 or more runtime options were provided to the sbcl binary.
3334 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3335 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3336 * optimization: there's now a fast-path for fixnum arguments in the
3337 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3338 * optimization: the code generated on x86-64 is more compact thanks
3339 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3340 * bug fix: floating-point exception handling now partly works on
3341 x86-64. (Thanks to James Knight)
3342 * improvement to the MIPS backend from Thiemo Seufer: C-style
3343 64-bit long long arguments and return values to alien functions
3345 * fixed some bugs revealed by Paul Dietz' test suite:
3346 ** the type-error signalled from WARN has a filled-in DATUM slot.
3347 ** the type-error required when a stream is not associated with
3348 a file has the stream as its datum.
3349 ** type-errors on single-floats on x86-64 no longer have
3350 :INVALID-OBJECT as the datum
3351 ** the type-errors signalled for invalid function names now have
3352 a correct expected type
3353 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3354 for structures defined with a :TYPE. Documentation strings for
3355 typed structures are no longer immediately discarded
3356 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3357 broadcast streams and synonym streams. FILE-LENGTH now also works
3358 on broadcast streams.
3360 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3361 * incompatible change: the --noprogrammer option, deprecated since
3362 version 0.7.5, has been removed. Please use the equivalent
3363 --disable-debugger option instead.
3364 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3366 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3367 inoperational for a while now) has been completely removed.
3368 * null lexical environments are now printed as #<NULL-LEXENV>,
3369 significantly reducing the amount of clutter in typical backtraces.
3370 * documentation on weak pointers, finalization, and after GC hooks
3371 has been added to the manual.
3372 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3373 as other specialized array types, is much faster. SUBSEQ and
3374 COPY-SEQ on such arrays have also been sped up.
3375 * optimization: EQL is now more efficient when at least other argument
3376 is known to be of type (OR FIXNUM (NOT NUMBER)).
3377 * fixed bug: the runtime is now less vulnerable to changes in the
3378 size of the SBCL object on OS X, and virtual memory is reserved for
3379 all spaces that need to be at a fixed address.
3380 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3381 * fixed bug: finalizers and after GC hooks that cause consing are now
3383 * fixed bug: compiler error messages and summaries are now printed to
3384 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3385 * fixed inference of the upper bound of an iteration variable.
3386 (reported by Rajat Datta).
3387 * fixed bug 211e: calling local functions with duplicated constant
3388 keyword argument no longer causes a bogus style warning about an
3390 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3391 ftype declaration to be disregarded. (reported by Dave Roberts)
3392 * fixed bug 373: caused by erronous compilation of references to alien
3393 variables in the runtime on ppc/darwin.
3394 * fixed bug 376: CONJUGATE type deriver.
3395 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3396 (reported by Baughn on #lisp)
3397 * a cross-compiler bug on non-x86 platforms has been identified and
3398 fixed. (thanks to Bruno Haible)
3399 * improvements to the MIPS runtime code for increased stability.
3400 (thanks to Thiemo Seufer)
3401 * increased the maximimum compact environment size to allow
3402 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3403 * partial workaround for bug 135: don't name the function we're
3404 calling for hairy cases of EVAL, so as not to accumulate one environment
3405 entry per call to EVAL. (reported by Kevin Reid)
3406 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3407 * optimization: type testing for non-vector arrays should be faster.
3408 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3410 * bug fix: setting 31st element of a bit vector to zero did not work
3412 * bug fix: redefining a class definition which failed due to a
3413 previous accessor / function clash now works (but see BUGS entry
3414 #380 for more problems in this area). (thanks to Zach Beane)
3415 * the long form of DEFINE-METHOD-COMBINATION disables method group
3416 checking when given a single method group with pattern *. (thanks
3418 * on x86 compiler supports stack allocation of results of simple
3419 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3420 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3421 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3422 * fixed some bugs related to Unicode integration:
3423 ** the restarts for recovering from input and output encoding
3424 errors only appear when there is in fact such an error to
3426 * fixed some bugs revealed by Paul Dietz' test suite:
3427 ** MISC.549 and similar: late transformation of unsafe type
3428 assertions into derived types caused unexpected code
3430 ** SCALE-FLOAT type deriver is less wrong.
3431 ** type derivers for EXP, LOG and similar functions compute result
3432 types for complex arguments better.
3433 ** (MISC.563) CONJUGATE type deriver works for very restricted
3435 ** out-of-line type testers for character strings are available.
3436 ** EQUAL compiler transform understands specialness of objects
3438 ** accessing double-floats stored on the stack now works on x86-64.
3439 ** debugger internals could sometimes create invalid lispobjs,
3440 resulting in GC crashes.
3441 ** MISC.548: type check weakening can convert required type into
3443 ** initialization forms for bindings are not in scope of free special
3446 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3447 * incompatible change: thread support for non-NPTL systems has
3448 been removed - locking is buggy and unreliable. A threaded
3449 SBCL build will now warn at startup and refuse to create
3450 new threads, unless futex support is detected in the kernel
3451 * incompatible change: the top level REPL now has only an ABORT
3452 restart associated with it, not TOPLEVEL and ABORT as it used to.
3453 TOP and TOPLEVEL are now available as debugger commands for
3454 returning to the top level.
3455 * incompatible change: forms evaluated in the REPL now use the
3456 global optimization policy.
3457 * incompatible change: user- and system-initialization files are
3458 no longer processed with LOAD, but by READ and EVAL; hence the
3459 global optimization policy, startup package, readtable, etc,
3461 * The .fasl file format number has been incremented because of
3462 various incompatible changes.
3463 * internal entry point details and argument counts no longer appear
3464 in backtraces unless explicitly requested by setting
3465 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3466 * built-in and standard functions no longer have names like "top
3467 level local call to FOO".
3468 * fixed bug 32: functions defined in non-null lexical environments
3469 now have more legible printed representation
3470 * fixed bug 33: functions defined in non-null lexical environemnts
3471 are now more amenable to inspection by INSPECT.
3472 * workaround for bug 354: XEPs no longer appear in backtraces unless
3473 explicitly requested.
3474 * fixed bug: receiving the signal which results from attempting to
3475 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3476 SIGBUS on other *BSDs) on architectures where the C stack is also
3477 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3478 to debugger confusion or wild instability. (reported by Cheuksan
3480 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3481 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3482 (reported by Lutz Euler)
3483 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3484 compiled code. (reported by Paul Dietz)
3485 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3486 specialized parameter to a method to something that is not TYPEP
3487 the specializer is now possible.
3488 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3489 face of package deletion.
3490 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3491 pathname. (reported by David Tolpin on c.l.l)
3492 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3493 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3494 STRING-STREAM and FILE-STREAM, respectively.
3495 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3496 than previously; in addition, its test suite is now run on build.
3497 (thanks to Luke Gorrie)
3498 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3499 * optimization: added a immediate representation for single-floats
3501 * fixed some bugs revealed by Paul Dietz' test suite:
3502 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3503 ** attempting to create a package with a colliding nickname causes
3504 correctable errors to be signalled.
3505 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3506 ** several x86-64 backend bugs related to sign-extension of immediate
3509 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3510 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3511 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3513 * fixed loading of multiply forward-referenced layouts.
3514 (thanks to Cheuksan Wang)
3515 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3516 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3517 (see COMPILE-FILE documentation for details of :PRINT option)
3518 * fixed bugs 19 and 317: fixed-format floating point printing is
3519 more accurate. This also fixes a bug reported by Adam Warner
3520 related to the ~@F format directive.
3521 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3523 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3524 dispatch table if the from-char is a dispatch macro character.
3525 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3526 by the wordsize no longer ignore the last word. (reported by Lutz
3528 * fixed bug in type checking of dynamic-extent variables. (reported
3530 * optimization: sequence traversal functions use their freedom to
3531 coerce function designators to functions.
3532 * optimization: code with many calls to CLOS methods specialized on
3533 CLOS classes has had redundant type checks removed.
3534 * optimization: added declarations to speed up operations that access
3535 the internal character database (for example STRING-UPCASE)
3536 * optimization: comparison operations between floats and sufficiently small
3537 fixnums no longer create extra rationals
3538 * fixed some bugs related to Unicode integration:
3539 ** portions of multibyte characters at the end of buffers for
3540 character-based file input are correctly transferred to the
3541 start of the buffer at the next read.
3542 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3543 passing it through to OPEN.
3544 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3545 argument given to internal calls to OPEN.
3546 ** the built-in comment readers (introduced by character sequences
3547 ";" and "#|") are more forgiving to encoding errors; they will
3548 STYLE-WARN and then attempt to resync the stream at a character
3549 boundary. (thanks to Teemu Kalvas)
3550 * fixed some bugs in the x86-64 port:
3551 ** Negative short int return values from c-calls are sign-extended
3553 ** The stack is aligned to 16-bytes for c-calls, as required by
3554 the ABI. (thanks to Cheuksan Wang)
3555 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3556 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3557 for enums. (thanks to Vincent Arkesteijn)
3558 ** Multiple small optimizations and bugfixes for floating point
3560 * fixed some bugs revealed by Paul Dietz' test suite:
3561 ** Space, Tab, Linefeed, Return and Page have the invalid
3562 secondary constituent character trait.
3563 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3565 ** WITH-INPUT-FROM-STRING should only update the index place on
3567 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3568 works more reliably.
3569 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3570 with one-dimensional arrays with fill pointers.
3571 ** TYPE-OF failed on a complex with an integer realpart and a
3573 ** compiler failure during type inference for the code of form
3574 (IF (EQL X (THE ...)) ...) (MISC.535).
3576 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3577 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3578 platform. The port supports 61-bit fixnums, large memory spaces
3579 and reloading shared object files.
3580 * enhancement: saving cores with foreign code loaded is now
3581 supported on ppc/Darwin in addition to the previously supported
3583 * enhancement: the statistical profiler now walks deeper into the
3584 call stack for more meaningful call-graphs and accrued time
3585 reports (x86/x86-64 only). It also now reports time spent in
3587 * enhancement: it is now possible to trace most individual methods
3588 of a generic function in addition to tracing the generic function
3590 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3592 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3593 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3594 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3595 produces an error. (thanks to Vincent Arkesteijn)
3596 * bug fix: NAMESTRING on pathnames with :WILD components in their
3597 directories works correctly. (thanks to Artem V. Andreev)
3598 * fixed bug 125: compiler preserves identity of closures. (reported
3600 * bug fixed: functions with &REST arguments sometimes failed with
3601 "Undefined function" when compiled with (DEBUG 3). (reported by
3603 * bug fix: overflow during compiling of setting element of a bit
3604 vector with constant index and value. (reported by Timmy Douglas)
3605 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3606 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3607 * on x86 compiler partially supports stack allocation of dynamic-extent
3609 * GO and RETURN-FROM do not check the extent of their exit points
3610 when compiled with SAFETY 0.
3611 * fixed some bugs related to Unicode integration:
3612 ** encoding and decoding errors are now much more robustly
3613 handled; it should now be possible to recover even from invalid
3614 input or output to the terminal. (thanks to Teemu Kalvas)
3615 ** provided a first cut at implementing STRING-TO-OCTETS and
3616 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3617 ** altered the SB-MD5 contributed module slightly, changing the
3618 interface just enough for it to be supportable for builds where
3619 lisp characters are not eight bits.
3620 * fixed some bugs revealed by Paul Dietz' test suite:
3621 ** the FORMATTER-generated functions for ~V[ conditionals require
3622 the correct number of arguments.
3623 ** READ-FROM-STRING returns the mandated second value when applied
3624 to displaced strings.
3625 ** the #\Rubout and #\Backspace characters are treated as invalid
3626 constituent characters by the tokenizer.
3628 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3629 * new feature: reloading changed shared object files with
3630 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3631 * new feature: references to foreign variables and functions
3632 can now be compiled and loaded before the corresponding shared
3633 object file is loaded, as long as the foreign definitions are
3634 available at runtime.
3635 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3636 supported. (thanks to Dan Debertin)
3637 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3638 just keywords. (thanks to Vincent Arkesteijn)
3639 * fixed bug #331: structure-class instances corresponding to
3640 DEFSTRUCT forms are now created eagerly.
3641 * fixed bug #345: backtraces from calls to undefined functions work
3642 on x86 as well. Related bug #61 is now also partially fixed on x86
3643 (backtraces from throws to unknown catch tags.)
3644 * bug fix: lambda-list parsing is now stricter vrt. order and number
3645 of lambda-list keywords.
3646 * bug fix: as specified by AMOP, an error is signalled if a
3647 class-option appears multiple times in a DEFCLASS form. (reported
3649 * bug fix: RANDOM can be compiled when the compiler derives the type
3650 of its numeric argument as a disjoint set of small integers.
3651 (reported by Paul Dietz)
3652 * bug fix: starting a core saved with shared objects loaded when
3653 those objects are not available no longer causes threaded SBCL to
3654 hang. (reported by Sean Ross)
3655 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3657 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3658 argument, which must always be NIL. (reported by Kalle Niemitalo)
3659 * bug fix: printing 1.0d+23 no longer results in an error.
3660 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3661 * bug fix: structure slot setters preserve evaluation order. (thanks
3663 * fixed some bugs related to Unicode integration:
3664 ** RUN-PROGRAM can allow its child to take input from a Lisp
3665 stream. (reported by Stefan Scholl)
3666 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3667 locales. (reported by Ken Causey)
3668 * fixed some bugs revealed by Paul Dietz' test suite:
3669 ** INCF, DECF and REMF evaluate their place form as specified in
3671 ** FORMATTER expands ~{ ~} iteration directives with V or #
3672 parameters correctly.
3673 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3674 consequent uses no arguments correctly.
3675 ** the system has a partial understanding of the (COMPLEX RATIO)
3677 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3680 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3681 * new feature: a build-time option (controlled by the :SB-UNICODE
3682 keyword feature, enabled by default) for building the system with
3683 support for the entire 21-bit character space defined by the
3685 * new feature: the system now has rudimentary external-format
3686 support; the primary user-visible change at this time is that
3687 characters with the high bit set (such as lower-case-e-acute) will
3688 print correctly to a terminal in a UTF-8 environment.
3689 * minor incompatible change: BASE-CHAR no longer names a class;
3690 however, CHARACTER continues to do so, as required by ANSI.
3691 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3692 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3693 has been moved to the SB-EXT package (temporarily re-exported from
3695 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3696 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3698 * fixed bug #351: better error-handlind and reporting for malformed
3700 * fixed bug #350: bignum-printing is now more memory-efficient,
3701 allowing printing of very large bignums, eg. (expt 2 10000000).
3702 (reported by Bruno Haible)
3703 * fixed bug #302: better primitive-type selection for intersection
3705 * fixed bug #308: non-graphic characters now all have names, as
3706 required. (reported by Bruno Haible)
3707 * bug fix: redefining a class with different superclasses now correctly
3708 removes it from the direct-subclasses of its previous superclasses.
3709 (reported by David Morse)
3710 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3711 new value now works. (reported by Bruno Haible)
3712 * bug fix: correct canonicalization of multiple non-standard slot
3713 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3714 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3715 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3716 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3717 now exists, an signals an error.
3718 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3719 during macroexpansion for non-iteration variables as well. (reported
3720 by Bruno Haible for CMUCL)
3721 * bug fix: Cyclic structures and unprintable objects in compiler
3722 messages no longer cause errors. (reported by Bruno Haible)
3723 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3724 and READ-FROM-STRING all now return a primary value of NIL if
3725 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3726 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3727 (reported by Bruno Haible for CMUCL)
3728 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3729 do not designate a condition. (reported by Bruno Haible for
3731 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3732 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3733 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3734 permitting resolution in favour of any of the conflicting symbols.
3735 (reported by Bruno Haible for CMUCL)
3736 * bug fix: EQUAL compiler optimizations is less aggressive on
3737 strings which can potentially compare true despite having distinct
3738 specialized array element types.
3739 * bug fix: unit enumerations can be defined without dividing by
3740 zero. (thanks to Vincent Arkesteijn)
3741 * FORMAT compile-time argument count checking has been enhanced.
3742 (report from Bruno Haible for CMUCL)
3743 * a partial workaround for the bug 262: the compiler does not try to
3744 inline-expand a local function doing RETURN-FROM from a deleted
3745 BLOCK. (thanks to Peter Denno for the bug report and to David
3746 Wragg for the simple test case)
3747 * fixed some bugs revealed by Paul Dietz' test suite:
3748 ** RENAME-PACKAGE allows all package designators as new package
3750 ** constraint propagation and lambda variable substitution are
3751 more cautious in dealing with partially deleted code.
3752 ** compiler sometimes lost reoptimization passes.
3753 ** CERROR, given a condition as condition designator, passes its
3754 remaining arguments to the continue format control without
3756 ** Case-altering FORMAT directives work correctly on non-ASCII
3758 ** The REAL type specifier handles bounds outside the floating
3759 point ranges without signalling FLOATING-POINT-OVERFLOW.
3760 ** Functions with IR1-transformations can create intercomponent
3761 references to global functions.
3762 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3764 ** FORMAT ~R treats a nil value for its first parameter correctly.
3766 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3767 * enhancement: saving cores with foreign code loaded is now
3768 supported on x86/NetBSD and sparc/Linux in addition to the previously
3769 supported platforms.
3770 * bug fix: on some platforms repeated installations caused multiple
3771 copies of HTML documentation to be installed -- should not happen
3772 any more. (reported by Stefan Scholl)
3773 * bug fix: parsing self-recursive alien record types multiple times
3774 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3775 original patch by Helmut Eller for CMUCL)
3776 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3777 (thanks to Richard Kreuter)
3778 * bug fix: defining classes whose accessors are methods on existing
3779 generic functions in other (locked) packages no longer signals
3780 bogus package lock violations. (reported by François-René Rideau)
3781 * bug fix: special variables as DEFMETHOD parameters no longer have
3782 associated bogus type declarations. (reported by David Wragg and
3784 * bug fix: read-write consistency on streams of element-type
3785 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3786 * bug fix: redefiniton of the only method of a generic function with
3787 no DEFGENERIC no longer emits a full WARNING. In addition,
3788 redefinition of generic functions with no DEFGENERIC to an
3789 incompatible lambda list now signals an error. (thanks to Zach
3791 * bug fix: DEFGENERIC now works even when there's a function of the
3792 same name in an enclosing lexical environment. (thanks to Zach
3794 * fixed compiler failure, caused by instrumenting code during
3795 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3796 * optimization: added loop analysis and improved register allocation
3797 * fixed some bugs revealed by Paul Dietz' test suite:
3798 ** POSITION on displaced vectors with non-zero displacement
3799 returns the right answer.
3800 ** (SIMPLE-STRING) is a valid type specifier for sequence
3802 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3804 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3805 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3807 ** The justification version of the FORMAT ~< directive treats
3808 non-zero minpad parameter correctly.
3810 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3811 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3812 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3813 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3814 the supported interface.
3815 * new feature: Single-stepping of code compiled with DEBUG 2 or
3816 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3817 * new feature: saving cores with foreign code loaded is now
3818 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3819 Timothy Moore's work for CMUCL)
3820 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3821 parameters to * instead of NIL if no initform is supplied.
3822 (reported by Johan Bockgaard)
3823 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3824 correctly when FUNCALL appears as the car of the form. Note:
3825 despite this FUNCALL forms are not currently subject to
3826 compiler-macro expansion. (port of Raymond Toy's fix for the
3827 same from CMUCL, reported by Johan Bockgaard)
3828 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3829 (thanks for Teemu Kalvas)
3830 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3831 case instead of terminating the iteration (thanks for Julian
3832 Squires, Sean Champ and Raymond Toy)
3833 * bug fix: incorrect expansion of defgeneric that caused a style
3834 warning. (thanks for Zach Beane)
3835 * bug fix: slot accessor effective method computation works properly
3836 for classes with multiple non-standard applicable methods on
3837 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3838 * on x86 compiler supports stack allocation of results of LIST and
3839 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3840 CMUCL implementation by Gerd Moellmann)
3841 * fixed some bugs revealed by Paul Dietz' test suite:
3842 ** FORMAT strings with both the ~<~:;~> form of the justification
3843 directive and pretty-printing directives cause an error.
3845 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3846 * incompatible change: the internal functions
3847 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3848 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3849 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3850 instead of the old functions.
3851 * new feature: on platforms where "dladdr" is available foreign
3852 function names now appear in backtraces. (based on Helmut Eller's
3854 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3855 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3857 * documentation: ASDF manual is now distributed with SBCL.
3858 * bug fix: SBCL can now load its contributed modules with REQUIRE
3859 even if the system-provided entries have been removed from
3860 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3862 * bug fix: backtraces involving undefined functions or assembly
3863 routines are more informative. (thanks to Brian Downing)
3864 * bug fix: mutually referent alien structures now work correctly.
3865 (reported by Rick Taube)
3866 * bug fix: structures defined by WITH-ALIEN can be referred to
3867 within other definitions in the same WITH-ALIEN.
3868 * bug fix: division operators (MOD, TRUNCATE and the like) with
3869 constant zero divisors and integer dividends no longer generate
3871 * bug fix: provide default methods for INPUT-STREAM-P and
3872 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3873 * bug fix: improve the detection and resolution of MOP metacycles
3874 (where effective method computation depends on the generic function
3875 having its effective method computed). (reported by Bruno Haible)
3876 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3877 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3878 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3879 * bug fix: pathnames with relative directory components can be
3880 represented relative to default pathnames.
3881 * optimization: in taking the GCD of bignums, reduce the two bignums
3882 to approximately the same size (using Euclid's algorithm) before
3883 applying the more sophisticated binary GCD. (thanks to Juho
3885 * optimization: COUNT on bitvectors now operates word-at-a-time.
3886 * optimization: ASH with a positive, but not necessarily constant,
3887 (leftwards) shift, when in a modular context, is compiled to a
3889 * fixed some bugs revealed by Paul Dietz' test suite:
3890 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3891 if the corresponding argument is NIL.
3892 ** FORMAT directives accepting a minpad parameter treat negative
3894 ** literal commas as character parameters to FORMAT directives are
3896 ** literal spaces directly after ~<Newline> directives within a
3897 format-logical-block (~:< ~@:>) do not induce :FILL-style
3898 conditional newlines.
3899 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3900 as specified: it no longer includes conditional newlines).
3901 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3903 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3904 :PER-LINE-PREFIX argument does not evaluate to a string.
3906 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3907 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3908 the manual for details; for now, package locks can be disabled by
3909 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3910 if no major problems are found then it is likely that they will be
3911 compiled in unconditionally.
3912 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3913 unsupported operators on all platforms. To load a shared library
3914 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3915 object file, link it into a shared library outside of SBCL and
3916 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3918 * bug workaround: ROOM T and the GC were not working together
3919 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3920 reporting facility aren't preserved. That reporting has been
3921 disabled, so now until and unless someone figures out how to make it
3922 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3923 * minor incompatible change: as threatened around sbcl-0.8.0, the
3924 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3925 The symbols are also exported from SB-PCL for backwards
3926 compatibility, but more so than before SB-PCL should be treated as
3927 an implementation-internal package.
3928 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3930 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3931 It is known as of this release not to work on the Alpha, however.
3932 * fixed bug #167: errors signalled due to illegal syntax in method
3933 bodies are now more legible.
3934 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3935 designators and can hence be used with TYPEP.
3936 * fixed bug #333: CHECK-TYPE now ensures that the type error
3937 signalled, if any, has the right object to be accessed by
3938 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3939 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3940 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3942 * fixed bug #334: programmatic addition of slots using specialized
3943 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3944 and :ALLOCATION :CLASS slots.
3945 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3946 float exponents. (rereported by Peter Seibel)
3947 * fixed a bug: #\Space (and other whitespace characters) are no
3948 longer considered to be macro characters in standard syntax by
3949 GET-MACRO-CHARACTER.
3950 * fixed bug: initialization of condition class metaobjects no longer
3951 causes an instance of the condition to be created. (reported by
3953 * fixed bug: it is now possible to have slots such that
3954 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3955 description is neither :INSTANCE nor :CLASS.
3956 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3957 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3958 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3959 non-standard SLOT-DEFINITION-ALLOCATION values.
3960 * fixed bugs: various race conditions handling exiting threads.
3961 CL-PPCRE's thread torture test now passes.
3962 * fixed arguably-a-bug: GC time proportional to number of threads in
3963 system even when most of them are idle
3964 * optimization: improved performance of BIT and SBIT on bit-vectors.
3965 * .fasl file incompatibility: The fasl file version number has
3966 been incremented because of changes associated with package locks.
3968 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3969 * minor incompatible change: the system no longer provides
3970 optimization hints (conditions which are TYPEP
3971 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3972 mode; these hints are still emitted when higher SPEED optimization
3974 * new contrib module: a sampling profiler (profiling by statistical
3975 sampling, rather than by instrumenting functions) is available as
3976 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3977 * the behaviour of the standard function ED is now customizeable by
3978 third parties through a hook variable: see ED's documentation
3979 string for information on the protocol.
3980 * the compiler no longer emits efficiency notes for (FUNCALL X)
3981 when the type of X is uncertain under default optimization
3983 * fixed bug 276: mutating a binding of a specialized parameter to a
3984 method to something that is not TYPEP the specializer is now
3986 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3987 exhibit the required behaviour on the x86 platform. (thanks to
3988 Peter van Eynde, Eric Marsden and Bruno Haible)
3989 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3990 even for difficult arguments. (reported by Peter Graves)
3991 * fixed bug 141a: the backquote printer now descends quoted
3993 * fixed another bug in backquote printing: no more destructive
3994 modification of the form's list structure. (reported by Brian
3996 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3997 move between its address being taken and the call to
3998 interrupt_thread, fixing a crashing race condition.
3999 * the SB-POSIX contrib implementation has been adjusted so that it
4000 no longer exhibits ridiculously poor performance when constructing
4001 instances corresponding to C structs.
4003 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4004 * minor incompatible change: the sb-grovel contrib now treats C
4005 structures as alien (in the sense of SB-ALIEN) objects rather than
4006 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4007 has implications for memory management of client code
4008 (sb-grovel-returned objects must now be manually managed) and for
4009 type safety (alien objects now have full types).
4010 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4011 used to control emission of compiler diagnostics, rather than the
4012 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4013 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4014 quality should be considered deprecated.
4015 * install.sh now installs the user manual as well
4016 * (not quite a new documentable feature, but worth considering in
4017 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4018 beginnings of a semantically meaningful condition hierarchy is
4019 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4021 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4022 designator as the defaults argument.
4023 * fixed bug: Displaced arrays whose displaced-to array has become
4024 too small now cause ARRAY-DIMENSION to signal an error, providing
4025 for safer bounds-checking. (reported by Bruno Haible)
4026 * fixed bug: DEFCLASS slot definitions with identical :READER and
4027 :WRITER names now signal a reasonable error. (reported by Thomas
4029 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4031 * fixed bug: Invalid slot specification errors now print correctly.
4032 (thanks to Zach Beane)
4033 * fixed bug 320: Shared to local slot value transfers in class
4034 redefinitions now happen corrently from superclasses as
4035 well. (reported by Bruno Haible)
4036 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4038 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4039 improper lists correctly. (reported by Bruno Haible)
4040 * fixed bug 313: source-transform for <fun-name> was erroneously
4041 applied to a call of a value of a variable with name <fun-name>.
4042 (reported by Antonio Menezes Leitao)
4043 * fixed bug 307: The obsolete instance protocol ensures that
4044 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4045 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4046 remove dead unknown-values globs from the middle of the stack.
4047 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4048 easier to resume long computations after using *BREAK-ON-SIGNALS*
4049 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4050 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4051 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4052 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4053 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4054 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4056 * fixed a (fairly theoretical) bug in string printing: if
4057 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4058 does not have array-element-type equal to the most general string
4060 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4061 function name. (thanks to Nikodemus Siivola)
4062 * fixed bug: compile-time format string checker failed on
4063 non-closed ~{. (reported by Thomas F Burdick)
4064 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4065 don't warn on legal loop code involving more than one aggregate
4066 boolean. (thanks to Nikodemus Siivola)
4067 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4068 in keyword position to MAKE-PACKAGE was not being reported as
4070 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4071 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4073 * fixed bugs 280 and 312: the checking for multiple definitions in a
4074 file is less likely to become confused by uses of inline
4076 * fixed bug: the #S reader macro performs the keyword coercion
4077 specified for slot names. (reported by Kalle Niemitalo)
4078 * fixed bug: lambda lists may contain symbols whose names start with
4079 & but are not lambda-list-keywords; their occurrence triggers a
4081 * fixed bug 321: define-method-combination argument lambda lists do
4082 not cause invalid code to be generated when &optional or &aux
4083 variables have default values. (reported by Bruno Haible)
4084 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4085 have CLOS classes; this appears also to have fixed reported
4086 instability in stack exhaustion detection.
4087 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4088 MUFFLE-WARNING when no associated restart is present is now
4090 * optimization: rearranged the expansion of various defining macros
4091 so that each expands into only one top-level form in a
4092 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4094 * optimization: used a previously little-used slot in symbols to
4095 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4097 * fixed some bugs revealed by Paul Dietz' test suite:
4098 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4100 ** Fixed an optimization bug related to inheritance of initforms
4101 from local to shared slots.
4102 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4103 ** CAST optimizer forgot to flush argument derived type.
4104 ** print/read consistency on floats is now orders of magnitude
4105 more likely. (thanks also to Bruno Haible for a similar report
4107 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4108 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4109 for objects of type REAL. Make it so.
4110 ** SXHASH is specified (infelicitously) to respect similarity,
4111 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4112 it so. (thanks to Markus Ziegler)
4113 ** on the Alpha, the compiler succeeds in compiling functions
4114 returning a known number of arguments greater than 63.
4115 ** fixed handling of invalid NIL arguments in keyword position
4117 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4119 ** provided a readably-printable representation for RANDOM-STATE
4121 ** ensured that pathnames, where they have a namestring, always
4122 print using #P"..." syntax.
4124 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4125 * Support for the forthcoming 2.0 version of the NetBSD kernel
4126 running on x86 hardware has been added. (thanks to Perry
4127 E. Metzger most immediately, and others for their past work)
4128 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4129 current release version; SBCL's OpenBSD support had been broken
4130 since about the time of OpenBSD's switch to ELF binary format.)
4131 * [placeholder for DX summary]
4132 ** user code with &REST lists declared dynamic-extent, under high
4133 speed or space and low safety and debug optimization policy.
4134 * The manual has been converted to Texinfo format and the debugger
4135 chapter from the cmucl manual has been added.
4136 * A facility has been added to extract documentation strings from
4137 sbcl and store them as Texinfo-formatted snippets for inclusion in
4138 the manual (via Texinfo's @include directive)
4139 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4140 the test case to Dave Roberts)
4141 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4142 pointers. (reported by Sean Ross)
4143 * bug fix: PROFILE output is printed nicely even for large numerical
4144 values. (thanks to Zach Beane)
4145 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4146 greater than 32 handle EOF correctly.
4147 * bug fix: on X86 an immediate argument of the IMUL instruction is
4148 correctly printed in disassembly. (thanks to Lutz Euler)
4149 * bug fix: class slots in redefined classes preserve their old
4150 values. (thanks to Bruno Haible and Nikodemus Siivola)
4151 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4152 succeeds. (reported by Marco Baringer)
4153 * fixed some bugs revealed by Paul Dietz' test suite:
4154 ** READ-SEQUENCE now works on ECHO-STREAMs.
4155 ** RATIONALIZE works more according to its specification. (thanks
4158 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4159 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4160 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4161 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4162 should matter to you only if you rebind the printer control
4163 variables and then find you want different bindings in the
4164 debugger than in the ordinary execution of your program.)
4165 * The runtime build system has been tweaked to support building
4166 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4167 assembler and linker. (thanks to Nikodemus Siivola)
4168 * Unbound, undefined, undeclared variables now trigger full
4169 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4170 more often programmer error than deliberate exploitation of undefined
4172 * optimization: the hash algorithm for strings has changed to one
4173 that is less vulnerable to spurious collisions. (thanks to Juho
4175 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4176 needless bounds checking. (thanks to Juho Snellman)
4177 * optimization: implemented multiplication as a modular
4178 (UNSIGNED-BYTE 32) operation on the PPC backend.
4179 * fixed some bugs revealed by Paul Dietz' test suite:
4180 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4182 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4183 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4184 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4186 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4188 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4190 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4191 their output stream on EOF from read.
4192 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4193 have been read to end-of-file.
4194 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4196 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4197 description of determination of which consecutive characters
4199 ** Printing the "Space" character with escaping on now yields "#\\ ",
4200 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4201 ** Reading floating-point numbers with *READ-BASE* set to a number
4202 less than 10 works correctly.
4203 ** Reading floating-point numbers with *READ-BASE* set to a number
4204 more than 10 works correctly.
4205 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4206 the readtable currently in effect.
4208 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4209 * minor incompatible change: parsing of namestrings on a physical
4210 (Unix) host has changed; numbers after the final #\. in a
4211 namestring are no longer interpreted as a version field. This is
4212 intented to be largely invisible to the user, except that the
4213 meaning of the namestring "*.*.*" has changed: it now refers to a
4214 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4215 should usually be replaced by
4216 (make-pathname :name :wild :type :wild :version :wild)
4217 with the added benefit that this is more likely to be portable.
4218 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4219 option to OPEN now signals an error if the file being opened
4220 exists; this may have an impact on existing code.
4221 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4222 signals received, on the PowerPC platforms (both Linux and
4223 Darwin). (thanks to Pierre Mai for pointing out the location of
4225 * several fixes on OS X: The system now builds and runs cleanly on
4226 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4227 (thanks to Brian Mastenbrook)
4228 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4229 second-resolution: integer multiples of 1/3600 between -24 and 24.
4230 (thanks to Vincent Arkesteijn)
4231 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4232 type when called with 1 argument; PEEK-CHAR checked type of
4233 PEEK-TYPE only after having read first character from a
4234 stream. (reported by Peter Graves)
4235 * bug fix: the garbage collector now has much better locality
4236 behaviour, and in particular no longer treats all memory as being
4237 exhausted when many small objects point to each other in a deeply
4239 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4240 recognized as being TYPEP their class.
4241 * bug fix: the PUSHNEW documentation string has been corrected.
4242 (thanks to Vincent Arkesteijn)
4243 * bug fix: defaulting of the value for the last of an atypically
4244 large number of multiple values being bound was not being
4245 performed correctly on the Alpha or PPC platforms
4246 * optimization: implemented multiplication as a modular
4247 (UNSIGNED-BYTE 32) operation on the x86 backend.
4248 * optimization: SEARCH on simple-base-strings can now be open-coded.
4249 (see also contrib/compiler-extras.lisp for inspiration for
4250 teaching the compiler about the Boyer-Moore algorithm).
4251 * value, returned by MAX (and MIN) called with several EQUALP, but
4252 not EQL, arguments now does not depend on compiler settings.
4253 * fixed some bugs revealed by Paul Dietz' test suite:
4254 ** in stack analysis liveness information is propagated from
4255 non-local entry points.
4256 ** pathwise CAST removing failed when the CAST node did not start
4258 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4259 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4261 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4262 host is already defined.
4263 ** RENAME-FILE works on streams instead of signalling an internal
4265 ** PEEK-CHAR uses the current readtable when determining whether
4266 or not a character is whitespace.
4267 ** MERGE-PATHNAMES handles the case when the pathname does not
4268 specify a name while the default-pathname specifies a version.
4269 ** Pathnames now stand a better chance of respecting print/read
4271 ** Attempting to use standardized file system operators with a
4272 pathname with invalid :DIRECTORY components signals a
4274 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4276 ** DIRECTORY on logical pathnames is more correct.
4277 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4278 signal a TYPE-ERROR if their argument is not a stream.
4279 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4280 designator argument does not designate a stream.
4281 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4282 examining the synonym.
4283 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4285 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4286 element-type larger than ([UN]SIGNED-BYTE 32).
4288 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4289 * When built with the :SB-FUTEX feature, threaded builds now take
4290 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4291 for faster/more reliable mutex and condition variable support.
4292 * Incompatible change (but one you probably shouldn't have been using
4293 anyway): the interface and code for arbitrating between multiple
4294 threads in the same user session has been redesigned.
4295 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4296 error when called without an explicit environment argument.
4297 (thanks to Nikodemus Siivola)
4298 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4299 confused about their position. (thanks to Adam Warner and Gerd
4301 * bug fix: Pretty printing backquoted forms with unquotations in the
4302 argument list position of various code constructs such as LAMBDA
4303 now works correctly. (reported by Paul Dietz)
4304 * bug fix: Pretty printing unquotations no longer loses all
4305 stream position information.
4306 * optimization: performance of string output streams is now less
4307 poor for multiple small sequence writes.
4308 * optimization: performance of CSUBTYPEP in the presence of complex
4309 expressions involving CONS and NOT many times has been improved.
4310 (reported by Paul Dietz)
4311 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4313 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4314 streams for the REPL, for the debugger, and so on. (thanks to
4316 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4317 * fixed some bugs revealed by Paul Dietz' test suite:
4318 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4319 is ignored if it is too small, rather than propagating through
4320 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4321 ** extremely complex negations of CONS types were not being
4322 sufficiently canonicalized, leading to inconsistencies in
4324 ** VALUES tranformer lost derived type.
4326 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4327 * fixed a bootstrapping bug: the build process no longer assumes
4328 that the various BOOLE-related constants have the same value in
4329 host and target lisps. (noted by Paul Dietz' test suite on an
4330 SBCL binary built from CLISP)
4331 * The system can now be dynamically linked on the MIPS platform,
4332 which enables dynamic loading of foreign code from Lisp. (thanks
4333 to Ralf Baechle for discussions on the MIPS ABI)
4334 * The system now records debugging information for its own source
4335 files in a filesystem-position-independent manner, relative to
4336 the "SYS" logical host.
4337 * fixed a compiler bug: MV-LET convertion did not check references
4338 to the "max args" entry point. (reported by Brian Downing)
4339 * tweaked disassembly notes to be less confident about proclaiming
4340 some instruction as an LRA. (thanks to Brian Downing)
4341 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4342 now each have their own history, command character, and other
4343 characteristics. (thanks to David Lichteblau)
4344 * fixed some bugs revealed by Paul Dietz' test suite:
4345 ** compiler failure in compiling LOGAND expressions including a
4347 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4348 shift greater than 32.
4349 ** FLUSH-DEST did not mark blocks for type check regeneration.
4350 ** HANDLER-CASE failed to accept declarations in handler clauses
4351 in some circumstances.
4353 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4354 * New code in contrib/sb-introspect (still probably not entirely
4355 stable yet) provides some support for smart Lisp development
4356 environments like SLIME.
4357 * The conditions signalled for errors occurring when loading .fasl
4358 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4359 in a way which should help ASDF recover gracefully.
4360 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4361 stuff has been cleaned up. If you code contrib/ stuff, this might
4362 affect you, and you can look at contrib/README, contrib/STANDARDS,
4363 and/or the 0.8.4.27 diff to check.
4364 * In full calls the compiler now does not generate checks for declared
4365 argument types for all arguments.
4366 * various threading fixes
4367 ** and some experimental patches which didn't make it into
4368 the main tree for this release, but which are shipped in
4369 contrib/experimental-thread.patch as a possible fix for some
4370 failures (deadlock, spinning...) in GC-intensive multithreaded
4372 * fixed PPC build problem (source code incompatibility of different
4373 library versions): added offsetof() hackery which attempts to divine
4374 where glibc maintainers put uc_mcontext today
4375 * fixed bug 282: compiler does not trust type assertions while passing
4376 arguments to a full call.
4377 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4378 &OPTIONAL VALUES type parameter.
4379 * fix bug 214: algorithm for noting rejected templates is now more
4380 similar to that of template seletion. (also reported by rydis on
4382 * fixed bug 141b: printing backquoted information readably and prettily
4383 inserts a space where necessary.
4384 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4385 (CHARACTER 10) are now reported as errors, rather than propagated
4386 as unknown types. (reported by piso on #lisp)
4387 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4388 with values NIL and :ERROR. (thanks to Milan Zamazal)
4389 * fixed bug 191c: CLOS now does proper keyword argument checking as
4390 described in CLHS 7.6.5 and 7.6.5.1.
4391 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4392 longer raise an error; further, using a list as a for-as-arithmetic
4393 counter now raises a meaningful error.
4394 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4395 now understood by sequence creation functions such as MAKE-SEQUENCE
4397 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4398 a STRING-INPUT-STREAM.
4399 * compiler enhancement: SIGNUM is now better able to derive the type
4401 * type declarations inside WITH-SLOTS are checked. (reported by
4403 * fixed some bugs revealed by Paul Dietz' test suite:
4404 ** incorrect optimization of TRUNCATE for a positive first
4405 argument and negative second.
4406 ** compiler failure in let-convertion during flushing dead code.
4407 ** compiler failure while deriving type of TRUNCATE on an
4408 interval, containing 0.
4409 ** ASH of a negative bignum by a negative bignum count now returns
4411 ** intersection of CONS types now canonicalizes properly, fixing
4412 inconsistencies in SUBTYPEP.
4414 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4415 * incompatible change: The --disable-debugger command line
4416 option now clobbers the debugger at a more fundamental
4417 level, by redefining #'INVOKE-DEBUGGER instead of by
4418 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4419 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4420 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4421 enter the debugger REPL and then suffer recursive errors
4422 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4423 while under the new system, BREAK in --disable-debugger mode
4424 terminates the system just as an unhandled error would.
4425 * fixed compiler performance when processing loops with a step >1;
4426 * bug fix: DOCUMENTATION now retrieves generic function
4427 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4428 support has been systematized, and now supports the methods
4429 specified by ANSI, along with a default method and a method for
4430 slot documentation. (reported by Nathan Froyd)
4431 * bug fix: effective methods associated with a generic function are
4432 no longer cached over a change of that generic function's method
4433 combination. (reported by Andreas Fuchs)
4434 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4435 names a non-existent directory. (thanks to Andreas Fuchs)
4436 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4437 the PPC platform, lead to stack corruption; this has been fixed.
4438 (reported by Rainer Joswig)
4439 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4440 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4441 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4442 arithmetic in general, is now much more reliable on the PPC
4444 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4445 platform now returns the right answer.
4446 * optimization: restored some effective method precomputation in
4447 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4448 precomputation is now tunable.
4449 * optimization: compiler-internal data structure use has been
4450 reviewed, and changes have been made that should improve the
4451 performance of the compiler by about 20%.
4452 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4453 simple-base-strings and simple-bit-vectors is improved.
4454 * optimization: the optimization of 32-bit logical and arithmetic
4455 functions introduced in version 0.8.3 on the x86 has been
4456 implemented on the mips, ppc and sparc platforms; an
4457 implementation of the same facility, but for 64-bit arithmetic,
4458 has been added for the alpha.
4459 * microoptimization: the compiler is better able to make use of the
4460 x86 LEA instruction for multiplication by constants.
4461 * bug fix: in some situations compiler did not report usage of
4462 generic arithmetic in (SPEED 3) policy.
4463 * bug 145b fix: compiler used wrong type specifier while converting
4464 MEMBER-types to numeric.
4465 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4467 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4468 index argument now works properly on the Alpha platform.
4469 * bug fix: floating point exception treatment on the Alpha platform
4471 * bug fix: FILE-POSITION works much better on string input and
4472 output streams. (thanks to Nikodemus Siivola)
4473 * bug fix: many threading/garbage collection symptoms sorted.
4474 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4475 might be pseudo-atomic.
4476 * internal change: Stopping for GC is now done with signals not
4477 ptrace. GC is now done in whichever thread wanted it, instead of
4479 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4481 * bug fix: result form in DO is not contained in the implicit
4483 * incompatible change: ICR structure is changed; the value part of
4484 CONTINUATION is now called LVAR; corresponding functions are
4485 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4486 * added type deriver for ISQRT (thanks to Robert E. Brown).
4487 * bug fix: better support for loading from the command line when an
4488 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4490 * fixed some bugs revealed by Paul Dietz' test suite:
4491 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4492 ** ROUND and FROUND now give the right answer when given very
4493 small float arguments.
4494 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4496 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4497 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4498 ** LCM should return a non-negative integer.
4499 ** PARSE-INTEGER returned the index of a terminator instead of the
4500 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4501 ** PARSE-INTEGER returned an incorrect index being applied to a
4503 ** LCM with two arguments of 0 returns 0 rather than signalling
4505 ** unsigned addition of a 32-bit constant with the high bit set no
4506 longer causes an internal compiler error on the x86.
4507 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4508 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4509 with negative last argument.
4510 ** byte specifiers with zero size and position no longer cause
4511 an error during type derivation.
4512 ** bignum multiplication on the Alpha platform now returns the
4514 * porting: The system now builds on SuSE AMD64, although it still
4515 generates a 32-bit binary.
4516 * .fasl file incompatibility: The fasl file version number has
4517 been incremented (because of the changes to internal compiler
4518 data structures referred to above).
4520 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4521 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4522 more accurately, on the Darwin kernel running on PowerPC hardware.
4523 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4524 * Compiler code deletion notes now signal a condition of type
4525 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4526 an associated MUFFLE-WARNING restart.
4527 * The compiler now performs limited argument count validation of
4528 constant format strings in FORMAT, and where appropriate in ERROR,
4529 CERROR and WARN. (thanks to Gerd Moellmann)
4530 * New ASDF-INSTALL contrib can be used for automatic download and
4531 installation of third-party Lisp code from CCLAN or other sites
4533 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4534 which forces another thread to execute a function supplied by the
4536 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4537 now accept and act upon their :ELEMENT-TYPE keyword argument.
4538 (reported by Martin Atzmueller, Edi Weitz)
4539 * bug fix: FILE-POSITION now accepts position designators up to
4540 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4541 is the greater. (thanks to Patrik Nordebo)
4542 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4543 Kalle Olavi Niemitalo)
4544 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4545 printable. (reported by Eric Marsden)
4546 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4547 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4548 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4549 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4550 (thanks to Stig Sandoe)
4551 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4552 UNREAD-CHAR now correctly includes the unread character in the
4553 target sequence. (thanks to Gerd Moellmann)
4554 * bug fix in threaded builds: the system can now be suspended and
4555 resumed by shell job control with minimal disruption.
4556 * bug fixes in times and timezones >2038AD
4557 * better handling of "where is GNU make?" problem in build scripts
4558 (thanks to Nikodemus Siivola)
4559 * new optimization: inside a named function any reference to a
4560 function with the same name is considered to be a self-reference;
4561 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4562 optimization quality.
4563 * new optimization on x86: logical functions and + now have
4564 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4565 used when the result is truncated to 32 bits.
4566 * VALUES declaration is partially enabled.
4567 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4568 * fixed some bugs revealed by Paul Dietz' test suite:
4569 ** The system now obeys the constraint imposed by
4570 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4571 types form a lattice under type intersection.
4572 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4573 ** ASSOC now ignores NIL elements in an alist.
4574 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4575 and (1+ MOST-POSITIVE-FIXNUM) answers.
4576 ** The addition of a method with invalid qualifiers to a generic
4577 function does not cause an error to be signalled immediately;
4578 a warning is signalled, and the error is generated only on
4579 calling the generic function.
4580 * changed .fasl file version number, in part to add type codes for
4581 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4582 obscure ANSI requirements
4584 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4585 * fixed bug 148: failure to inline-expand a local function left
4586 garbage, confusing the compiler.
4587 * fixed bugs 3cd: structure slot readers perform type check if the
4588 slot can have an invalid value (i.e. it is either not initialized
4589 or can be written with a less specific slot writer).
4590 * bug fix: the compiler now traps array references to elements off
4591 the end of an array; previously, the bounds checking in some
4592 circumstances could go off-by-one.
4593 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4595 * type declarations for array element types now obey the description
4596 on the CLHS page "Declaration TYPE", as per discussions on
4597 sbcl-help around 2003-05-08. This means that a declaration
4598 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4599 declaration, all references to BAR will be asserted or assumed
4600 (with THE, so dependent on compiler policy) to involve objects of
4601 type FOO. Note that no such declaration is implied in
4602 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4603 * declared types of functions from the "Conditions"
4604 chapter. (reported by Paul Dietz)
4605 * bug fix: CERROR accepts a function as its first argument.
4606 * bug fix: NTH an NTHCDR accept a bignum as index
4607 arguments. (reported by Adam Warner)
4608 * optimization: character compare routines now optimize comparing
4609 against a constant character. (reported by Gilbert Baumann)
4610 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4611 argument now works properly on the MIPS platform.
4612 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4613 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4614 declared to have a functional type, does not cause an error
4616 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4617 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4618 * fixed bug: if last continuation of a deleted block has a
4619 destination, this destination should be deleted too. (reported by
4621 * fixed a bug in the bootstrap process: the host compiler's values
4622 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4623 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4624 test case from Patrik Nordebo)
4625 * improved the ability of the disassembler on the PPC platform to
4626 provide helpful disassembly notes.
4627 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4628 the class in more cases than previously.
4629 * bug fix: FILE-POSITION now understands :START and :END for
4630 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4631 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4632 8) data. (thanks to David Lichteblau)
4633 * bug fix: it is possible to add a method to a generic function
4634 without lambda list.
4635 * bug fix: reader failed to signal END-OF-FILE inside an
4636 object representation. (reported by Nikodemus Siivola)
4637 * fixed some bugs revealed by Paul Dietz' test suite:
4638 ** LAST and [N]BUTLAST should accept a bignum.
4639 ** condition slot accessors are methods.
4640 ** (VECTOR NIL) is a subtype of STRING.
4642 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4643 * minor incompatible change: some nonsensical specialized lambda
4644 lists (used in DEFMETHOD) which were previously ignored now signal
4646 * minor incompatible change: the system is now aware of the types of
4647 variables in the COMMON-LISP package, and will signal errors for
4648 most violations of these type constraints (where previously they
4649 were silently accepted).
4650 * minor incompatible change: COMPILE-FILE now uses the freedom
4651 afforded (ANSI 3.2.2.3) to use derived function types for
4652 functions defined in the same file. This also permits the system
4653 to warn on static type mismatches and function
4654 redefinition. (Currently it does not work with high DEBUG level.)
4655 * minor incompatible change: VALUES declaration is disabled.
4656 * When issuing notes, the compiler now signals a condition of type
4657 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4658 restart for use in user handlers. It is expected that the
4659 COMPILER-NOTE condition will eventually become a condition
4660 supertype to a hierarchy of note types, which will then be
4661 handleable in a similar fashion. However, at the moment, no such
4662 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4663 but it's an implementation detail, not a classification for the
4665 * Changes in type checking closed the following bugs:
4666 ** type checking of unused values (192b, 194d, 203);
4667 ** template selection based on unsafe type assertions (192c, 236);
4668 ** type checking in branches (194bc).
4669 * A short form of VALUES type specifier has ANSI meaning (it has
4670 increased the number of situations when SBCL cannot perform type
4672 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4673 keywords or constants is permissible.
4674 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4675 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4676 classes. (thanks to Antonio Martinez)
4677 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4678 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4679 argument to a pretty-print stream. Instead, it leaves any such
4680 operations to DESCRIBE-OBJECT methods.
4681 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4683 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4684 lambda lists. (thanks to David Lichteblau)
4685 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4686 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4687 (thanks to Gerd Moellmann)
4688 * fixed bug 246: increased compilation speed of long
4689 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4691 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4693 * DEFCONSTANT now throws a condition of type
4694 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4695 constant to a non-EQL value; CONTINUE and ABORT restarts
4696 respectively change and preserve the value.
4697 * fixed bug 63: The code walker, part of the implementation of CLOS,
4698 is now better at handling symbol macros.
4699 * bug fix: There is no longer an internal implementation type named
4700 CL:LENGTH. (reported by Raymond Toy)
4701 * bug fix: In macro-like defining macros/special operators the
4702 implicit block does not enclose the lambda list.
4703 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4704 enclosed in parentheses) are not suitable as type specifiers, and
4705 their use properly signals an error now.
4706 * bug fix: An argument count mismatch for a type specifier in code
4707 being compiled no longer causes an unhandled error at compile
4708 time, but signals a compile-time warning.
4709 * fixed simple vector readable printing
4710 * bug fix: DESCRIBE takes more care over whether the class
4711 precedence list slot of a class is bound before accessing it.
4712 (reported by Markus Krummenacker)
4713 * bug fix: FORMATTER can successfully compile pretty-printer format
4714 strings which use variants of the ~* directive inside.
4715 * bug fix: SEARCH now applies its TEST predicate to the elements of
4716 the arguments in the correct order. (thanks to Wolfhard Buss)
4717 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4718 in type inference. (thanks to Robert E. Brown)
4719 * bug fix: Reading in symbols with an explicit package name of ""
4720 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4721 * fixed some bugs revealed by Paul Dietz' test suite:
4722 ** NIL is now allowed as a structure slot name.
4723 ** Arbitrary numbers, not just REALs, are allowed in certain
4724 circumstances in LOOP for-as-arithmetic clauses.
4725 ** Multiple class redefinitions before slot access no longer
4726 causes a type error.
4727 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4728 association between the name and a class.
4729 ** Generic functions with non-standard method-combination and over
4730 five methods all of which return constants no longer return NIL
4731 after the first few invocations. (thanks to Gerd Moellmann)
4732 ** CALL-NEXT-METHOD with no arguments now passes the original
4733 values of the arguments, even in the presence of assignment.
4734 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4736 ** DISASSEMBLE works with closures and funcallable instances.
4737 ** ADD-METHOD now returns the generic function, not the new method.
4738 ** FIND-METHOD signals an error if the lengths of the specializers
4739 is incompatible with the generic function, even if the ERRORP
4741 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4742 which its argument is a member.
4743 ** DEFCLASS only redefines the class named by its class-name
4744 argument if that name is the proper name of the class;
4745 otherwise, it creates a new class.
4746 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4747 of the UNBOUND-SLOT condition to the name of the slot.
4748 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4749 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4750 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4751 SLOT-MAKUNBOUND in the specified fashion.
4753 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4754 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4755 cross-compilation host. As a consequence, we can now bootstrap our
4756 way up to SBCL starting with a bare gcc toolchain and human-readable
4757 source code (first the source to CLISP, then the source to SBCL).
4758 * A contributed module containing a partial implementation of the
4759 simple-streams interface has been included. (thanks to Rudi
4761 * A contributed module implementing the RFC1321 Message Digest
4762 Algorithm, known as MD5, has been included.
4763 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4764 no longer has any effect, as the code controlled by this feature
4765 has been deleted. (As far as we know, no-one has ever built using
4766 this feature, and its semantics were confused in any case).
4767 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4768 work on conditions (as required by the ANSI specification),
4769 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4770 expected behaviour on conditions. Users should note, however,
4771 that such behaviour is not required by the ANSI specification,
4772 and so use of this behaviour may render their code unportable.
4773 * fixed some bugs revealed by Paul Dietz' test suite:
4774 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4776 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4777 ** SXHASH on condition objects no longer returns NIL.
4778 ** :ALLOCATION :CLASS slots are better treated; their values are
4779 updated on class redefinition, and initforms inherited from
4780 superclasses are applied.
4781 ** REMOVE-METHOD returns its generic function argument even when
4782 no method was removed.
4783 ** SHARED-INITIALIZE now initializes the values of the requested
4784 slots, including those with :ALLOCATION :CLASS.
4785 ** ALLOCATE-INSTANCE now works on structure classes defined via
4786 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4788 ** SLOT-EXISTS-P now works on conditions, as well as structures
4790 ** MAKE-LOAD-FORM now has the required methods on
4791 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4792 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4793 keyword, and now implements the SLOT-NAMES argument.
4794 ** methods with &OPTIONAL arguments no longer allow too many
4795 arguments to be passed in the call without error.
4796 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4797 option is consistent with the required arguments of the generic
4798 function lambda list.
4799 * bug fix: REQUIRE accepts a string designator. (Thanks to
4801 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4802 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4803 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4804 * bug fix: The compiler now checks for duplicated variables in macro
4806 * bug fix: SETQ on globals returns the correct value.
4807 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4808 not a COMPILER-ERROR (followed by some other strange error on
4809 choosing the CONTINUE restart).
4810 * bug fix: make.sh and friends are now more consistent in the way that
4811 they look for GNU "make".
4813 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4814 * experimental native threads support (on x86 Linux >=2.4 only).
4815 This is not compiled in by default: you need to add :SB-THREAD to
4816 the target features. See the "Beyond ANSI" chapter of the manual
4818 * fix for longstanding nonANSIism: The old distinction between
4819 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4820 The return value from CL:FIND-CLASS is now a CLOS class, and
4821 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4822 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4823 * An interface to the MetaObject Protocol, as described in Kiczales,
4824 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4825 MIT Press, 1991, is available from the SB-MOP package.
4826 * incompatible change: the SB-PCL package should now be considered
4827 a private implementation detail, and no longer a semi-private MOP
4829 * minor incompatible change: due to rearrangement for threads, the
4830 control stack and binding stack are now allocated at arbitrary
4831 addresses instead of being hardcoded per-port. Users affected by
4832 this probably have to be doing advanced things with shared
4833 libraries, and will know who they are.
4834 * minor incompatible change: Previously, all --eval forms used were
4835 processed with READ before any of them were processed with EVAL.
4836 Now each --eval form is processed with both READ and EVAL before
4837 the next --eval form is processed. (Thus package operations like
4838 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4839 work as the user might reasonably expect.)
4840 * minor incompatible change: *STANDARD-INPUT* is now only an
4841 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4843 * minor incompatible change: Y-OR-N-P is now character-oriented,
4844 not line oriented. Also, YES-OR-NO-P now works without errors.
4845 (thanks to Antonio Martinez)
4846 * sb-aclrepl module improvements: an integrated inspector, added
4847 repl features, and a bug fix to :trace command.
4848 * Known functions, which cannot be open coded by the backend, are
4849 considered to be able to check types of their arguments. (fixing
4850 a bug report by Nathan J. Froyd)
4851 * fixed a bug in computing method discriminating functions: It is
4852 now possible to define methods specialized on classes which have
4853 forward-referenced superclasses. (thanks to Gerd Moellmann)
4854 * fixed evaluation order in optional entries (reported by Gilbert
4856 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4857 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4858 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4859 required-by-AMOP NAME argument, as well as CLASS and
4860 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4861 * fixed bug 20: DEFMETHOD can define methods using names that are
4862 not the proper names of classes to designate class specializers.
4863 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4864 Unix file descriptors, instead of blowing up. (thanks to Antonio
4866 * Garbage collection refactoring: user-visible change is that a
4867 call to the GC function during WITHOUT-GCING will not do garbage
4868 collection until the end of the WITHOUT-GCING. If you were doing
4869 this you were probably losing anyway.
4870 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4871 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4872 TYPEP the latter but not the former.
4873 * The compiler issues a full WARNING for calls to undefined functions
4874 with names from the CL package.
4875 * MAP-INTO for a vector destination is open coded. (reported by
4876 Brian Downing on c.l.l)
4877 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4878 documentation string.
4879 * fixed some bugs revealed by Paul Dietz' test suite:
4880 ** COPY-ALIST now signals an error if its argument is a dotted
4882 ** Condition slots are now accessed more correctly in the presence
4883 of multiple initargs for a given slot.
4884 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4885 exclude restarts of the same name associated with a different
4887 ** DEFCLASS of forward-referenced classes with another
4888 forward-referenced class in the superclasses list no longer
4890 ** Condition slots are now initialized once each, not multiple
4891 times. (thanks to Gerd Moellmann)
4892 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4894 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4895 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4896 arguments contain duplicated elements.
4897 ** RESTART-CASE understands local macros.
4898 ** RESTART-CASE associates exactly its own restarts with a condition.
4899 ** ENDP in safe mode checks its argument to be of type LIST.
4900 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4901 in question is unbound.
4902 ** Optimized MAKE-INSTANCE functions no longer cause internal
4903 assertion failures in the presence of duplicate initargs.
4904 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4905 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4906 propagated even in the ctor optimized implementation of
4908 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4910 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4911 * a better implementation of SXHASH on (simple) bit vectors,
4912 measured both in execution speed and in distribution of results
4913 over the positive fixnums, has been installed. Likewise, a better
4914 implementation of EQUAL for simple bit vectors is now available.
4915 * fixed CEILING optimization for a divisor of form 2^k.
4916 * fixed bug 240 (emitting extra style warnings "using the lexical
4917 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4918 by Antonio Martinez)
4919 * fixed SXHASH, giving different results for NIL depending on type
4920 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4921 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4922 variable. (found by Rolf Wester)
4923 * SBCL does not ignore type declarations for special
4924 variables. (reported by rif on c.l.l 2003-03-05)
4925 * some bug fixes in contrib/sb-aclrepl/
4926 * fixed some bugs revealed by Paul Dietz' test suite:
4927 ** a bug in the CONS type specifier, whereby the CAR and CDR
4928 types got intertwined, has been fixed;
4929 ** the type system is now able to reason about the interaction
4930 between INTEGER and RATIO types more completely;
4931 ** APPEND, [N]REVERSE and NRECONC check that those their
4932 arguments, which must be proper lists, are really so;
4933 ** An array specialized to be unable to hold elements has been
4934 implemented, as required -- yes, really -- by ANSI;
4935 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4936 on malformed property lists;
4938 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4939 * incompatible packaging change: in line with Unix convention,
4940 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4941 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4942 * REQUIRE and PROVIDE are now optionally capable of doing something
4943 useful. See the documentation string for REQUIRE.
4944 * infrastructure for a managed SBCL contrib system: contributed
4945 modules in this release include:
4946 ** the ASDF system definition facility;
4947 ** an interface to the BSD Sockets API;
4948 ** an ACL-like convenience interface to the repl;
4949 (thanks to Kevin Rosenberg)
4950 ** an implementation of ROTATE-BYTE, with efficient implementation
4952 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4953 gives a closer approximation to the right answer than previously.
4954 (thanks to Raymond Toy)
4955 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4956 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4957 optional environment arguments, as required by ANSI.
4958 * fixed bugs in other functions taking environment objects, allowing
4959 calls with an explicit NIL environment argument to be compiled
4961 * fixed bug 228: primary return values from
4962 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4963 COMPILE or FUNCTION.
4964 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4965 :TYPE will no longer signal errors on innocuous objects.
4966 * fixed bug 231b: SETQ is better at respecting type declarations in
4967 the lexical environment.
4968 * fixed a bug in DEFCLASS: classes named by symbols with no or
4969 unprintable packages can now be defined.
4970 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4971 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4972 * fixed compiler failure related to checking types of functions.
4973 (reported by Robert E. Brown)
4974 * the compiler is now much more consistent in its error-checking
4975 treatment of bounding index arguments to sequence functions: in
4976 (SAFETY 3) code, errors will be signalled in almost all cases if
4977 invalid sequence bounding indices are passed to functions defined
4978 by ANSI to operate on sequences.
4979 * fixed a bug in the build procedure: documentation of SBCL-specific
4980 packages is now preserved and available in the final Lisp image.
4981 * lifted FDEFINITION lookup out of loops in the implementation of
4982 many list operations. (thanks to Robert E. Brown)
4983 * fixed a bug in the reader: the #n# reader macro now works for
4984 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4985 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4986 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4987 E. Brown and Tony Martinez respectively)
4988 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4989 SLOT-BOUNDP: in particular, it is now able to optimize them much
4990 better, and is now not vulnerable to having packages renamed.
4991 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4992 always called when a slot is not present in an instance. (thanks
4994 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4995 longer signal an error on unreading a character following EOF on
4996 the previous constituent stream. (thanks to Tony Martinez)
4997 * fixed some bugs revealed by Paul Dietz' test suite:
4998 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4999 not just nonnegative fixnums;
5000 ** the logical bit-array operators such as BIT-AND now accept an
5001 explicit NIL for their "opt-arg" argument (to indicate a
5002 freshly-consed result bit-array);
5003 ** ELT now signals an error on an invalid sequence index in safe
5005 ** the type system is now cleverer about negations of numeric
5006 types, and consequently understands the BIGNUM and RATIO types
5008 ** the type system is now cleverer about the interaction between
5009 INTEGER and RATIO types: while bugs still remain, many more
5010 cases are accurately computed;
5011 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5012 if it is in the last clause;
5013 ** CONSTANTLY now correctly returns a side-effect-free function in
5015 ** DECLARE is no longer treated as a special-operator; in
5016 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5017 * incremented fasl file version number due to the change in the
5018 DEFSTRUCT-SLOT-DESCRIPTION structure.
5020 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5021 * minor incompatible change: code processed by the "interpreter" or
5022 EVAL now has a compilation optimization policy of (DEBUG 2)
5023 (changed from (DEBUG 1)) to improve debuggability of interactive
5024 development, and to allow the use of the debug RETURN command in
5026 * an experimental implementation of the RETURN command for the
5027 debugger has been included. (thanks to Frederik Kuivinen)
5028 * fixed bug 62: constraints were not propagated into a loop.
5029 * fixed bug in embedded calls of SORT (reported and investigated by
5031 * fixed some bugs revealed by Paul Dietz' test suite:
5032 ** printing and reading of arrays with some dimensions having
5033 length 0 (thanks to Gerd Moellmann);
5034 ** BOA constructor with &AUX argument without a default value does
5035 not cause a type error;
5036 ** CONSTANTP now returns true for all self-evaluating objects.
5038 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5039 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5040 accessors that are related by inheritance, as specified in the
5041 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5042 Valtteri Vuorikoski)
5043 * The compiler is now able to inline functions that were defined in
5044 a complex lexical environment (e.g. inside a MACROLET).
5045 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5047 * Support for the upcoming FreeBSD-5.0 release has been included.
5048 (thanks to Dag-Erling Smorgrav)
5049 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5050 effect when it is not in a toplevel context.
5051 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5052 stand a better chance of being correct. (thanks to Gerd
5054 * fixed bug in COERCE, which now signals an error on coercing a
5055 rational to a bounded real type which excludes the expected
5057 * The compiler is now able to derive types more accurately from the
5058 COERCE and COMPILE functions.
5059 * fixed bug 223: functional binding is considered to be constant
5060 only for symbols in the CL package.
5061 * fixed bug 231: SETQ did not check the type of a variable being set
5062 (reported by Robert E. Brown)
5063 * A new optimization for MAKE-INSTANCE has been included, fixing
5064 various bugs (including relating to :ALLOCATION :CLASS slots and
5065 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5067 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5068 ** As required by ANSI, LOOP now disallows anonymous collection
5069 clauses such as COLLECT I in conjunction with aggregate boolean
5070 clauses such as THEREIS (= I 1);
5071 ** LOOP now signals an error when any variable is reused in the
5072 same loop (including the potentially useful construct analogous
5073 to WITH A = 1 WITH A = (1+ A);
5074 ** IT is only a special loop symbol within the first clause of a
5075 conditional loop clause;
5076 ** LOOP with a typed iteration variable over a hashtable now
5077 signals a type error iff it should.
5078 * fixed some other bugs revealed by Paul Dietz' test suite:
5079 ** FILE-STREAM now names the class previously known as FD-STREAM;
5080 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5081 argument) no longer signals an error;
5082 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5083 of the slot symbol, rather than using the current package
5084 ((:CONC-NAME "") continues to intern the slot's name in the
5086 * incremented fasl file version number, because of the incompatible
5087 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5088 of the new implementation of DEFINE-COMPILER-MACRO.
5090 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5091 * Support for building SBCL for MIPS platforms running in
5092 little-endian mode has now been checked in, and basic
5093 functionality on said platforms verified.
5094 * minor incompatible change: PCL now records the pathname of a file
5095 in which methods and the like are defined, rather than its
5097 * minor incompatible change: TRUENAME now considers the truename of
5098 a file naming a directory to be the pathname with :DIRECTORY
5099 component indicating that directory.
5100 * minor incompatible change: a NAMED clause in the extended form of
5101 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5102 reason for the previous behaviour is unclear.
5103 * more systematization and improvement of CLOS and MOP conformance
5104 in PCL (thanks to Gerd Moellman and Pierre Mai):
5105 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5107 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5108 primary methods with no specializers;
5109 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5111 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5112 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5113 FORWARD-REFERENCED-CLASSes; error reporting on
5114 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5116 ** SXHASH on CLOS instances now uses a slot internal to the
5117 instance to return different numbers on distinct instances,
5118 while preserving the same return value through invocations of
5120 ** DEFMETHOD signals errors when methods with longer incongruent
5121 lambda lists are added to generic functions;
5122 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5123 CLASS, as specified in AMOP;
5124 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5125 on the order returned by the primary method for classes of
5126 class STANDARD-CLASS;
5127 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5128 * fixed some bugs shown by Paul Dietz' test suite:
5129 ** DOLIST puts its body in TAGBODY;
5130 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5132 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5133 value producing form;
5134 ** if more variables are given to PROGV than values, extra
5135 variables are bound and made to have no value;
5136 ** NSUBSTITUTE on list arguments gets the right answer with
5138 ** ELT signals an error of type TYPE-ERROR when the index argument
5139 is not a valid sequence index;
5140 ** LOOP signals (at macroexpansion time) an error of type
5141 PROGRAM-ERROR when duplicate variable names are found;
5142 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5143 ** FUNCALL of special-operators now cause an error of type
5145 ** PSETQ now works as required in the presence of side-effecting
5146 symbol-macro places;
5147 ** NCONC accepts any object as its last argument;
5148 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5150 ** loop-for-as-package does not require a package to be explicitely
5152 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5154 * fixed bug 166: compiler preserves "there is a way to go"
5155 invariant when deleting code.
5156 * fixed bug 172: macro lambda lists with required arguments after
5157 &REST arguments now cause an error to be signalled. (thanks to
5159 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5160 bug. (thanks to Matthew Danish)
5161 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5163 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5164 arguments are lexically rebound. (thanks to Gerd Moellmann and
5166 * fixed bug 194: error messages are now more informative when there
5167 is no primary method applicable in a call to a generic
5168 function. (thanks to Gerd Moellmann)
5169 * fixed bug in command line argument checking (thanks to Julian
5171 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5172 (thanks to Matthew Danish)
5173 * incremented fasl file version number, because of the
5174 SXHASH-related changes in the layout of CLOS data structures
5176 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5177 * minor incompatible change: The runtime (the Unix executable named
5178 "sbcl") is now much pickier about the .core files it will load.
5179 Essentially it now requires .core files to descend from the same
5180 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5181 as the runtime does. (The intent is to prevent the crashes which
5182 can occur, and which can even be reported as mysterious failures,
5183 when people patch the sources or change the build parameters
5184 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5185 sbcl and .core files.)
5186 * fixed bug: VALUES-LIST is no longer optimized away.
5187 * fixed bug 142: The FFI conversion of C string values to Lisp
5188 string values no longer conses excessively. (thanks to Nathan
5189 Froyd porting Raymond Toy's fix to CMU CL)
5190 * began to systematize and improve MOP conformance in PCL (thanks to
5191 Nathan Froyd, Gerd Moellman and Pierre Mai):
5192 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5194 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5195 ** FINALIZE-INHERITANCE is now called on class finalization;
5196 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5197 argument precedence order.
5198 * fixed bug 202: The compiler no longer fails on functions whose
5199 derived types contradict their declared type.
5200 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5201 so it can be non-toplevel.
5202 * The fasl file version number has changed (because of the new
5203 implementation of DEFMACRO).
5204 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5205 safe code, that any length requirement by their type-specifier
5206 argument is valid. The exceptions to this are described in bug
5208 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5209 functions now check the types of their inputs as required by ANSI.
5210 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5211 introduced symbol is DECLAREd to be SPECIAL.
5212 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5213 * fixed bug: :COUNT argument to sequence functions may be negative
5214 * fixed bug: body of DO-SYMBOLS may contain declarations
5215 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5216 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5217 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5218 symbol macro only once
5219 * fixed printing of call frame when argument list is unavailable
5220 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5221 * compiler no longer signals WARNING on unknown keyword
5224 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5225 * A beta-quality port to the mips architecture running Linux,
5226 based on the old CMUCL backend, has been made. It has been tested
5227 on a big-endian kernel, and works sufficiently well to be able to
5228 rebuild itself; it has not been tested in little-endian mode.
5229 * fixed an inconsistency between gencgc.c and purify.c which made
5230 dumping/loading .core files unreliable
5231 * fixed bug 120a: The compiler now deals correctly with IFs where
5232 the consequent is the same as the alternative, instead of
5233 misderiving the return type. (thanks to Alexey Dejneka)
5234 * fixed bug 113: Logical pathnames are now dumpable (the logical
5235 host is resolved at load-time, throwing an error if it is not
5237 * fixed bug 174: FORMAT's error message is slightly clearer when a
5238 non-printing character is used in a format directive.
5239 * fixed several bugs in compiler checking of type declarations, i.e.
5240 violations of the Python "declarations are assertions" principle
5241 (thanks to Alexey Dejneka)
5242 * fixed several bugs in PCL's error checking (thanks to Gerd
5244 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5246 * fixed bug in compilation of functions as first class values
5247 (thanks to Antonio Martinez-Shotton)
5248 * The compiler's handling TYPE-ERRORs which it can prove will
5249 inevitably happen at runtime has been cleaned up and corrected
5250 in several ways. (thanks to Alexey Dejneka)
5251 * improved argument type checking for various basic arithmetic
5252 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5253 lavished on them in the past that they can be compiled in many
5254 ways in different special cases
5255 * fixed bug 181: compiler checks validity of user supplied type
5257 * cleaned up code flushing in optimization: Function calls which
5258 should signal errors for safety purposes (e.g. which ANSI says
5259 should signal errors when their arguments are of incorrect type)
5260 are no longer optimized away.
5261 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5262 * incremented fasl file version number, because changes in the
5263 implementation of sequence functions like COERCE caused
5264 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5265 in old inline expansions) to become undefined. (Actually these
5266 changes were later undone, so we might very well be binary
5267 compatible with 0.7.7 after all, but leaving the version number
5268 incremented seemed like the simplest and most conservative
5271 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5272 * An alpha-quality port to the parisc architecture running Linux,
5273 based on the old CMUCL backend, has been made. This, even more so
5274 than the other backends, should be considered still a work in
5275 progress; known problems include that the Linux kernel in 64-bit
5276 mode does not propagate the correct sigcontext structure to
5277 userspace, and consequently SBCL on a parisc64 kernel will not
5279 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5280 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5281 suppressed.) Also now that the compiler is looking at declarations
5282 in the environment, it checks optimization declarations as well,
5283 and suppresses inlining when (> DEBUG SPEED).
5284 * More fixes have been made to treatment of floating point exception
5285 treatment and other Unix signals. In particular, floating point
5286 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5287 * The detection and handling of control stack exhaustion (infinite
5288 or very deeply nested recursion) has changed. Stack exhaustion
5289 detection is now done by write-protecting pages at the OS level
5290 and applies at all optimization settings; when found, a
5291 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5292 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5293 be caught using IGNORE-ERRORS.
5294 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5295 correctly when transforming recursive LABELS functions to LETs.
5296 (thanks to Alexey Dejneka)
5297 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5298 that are names of constants or global variables.
5299 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5300 alien routines with docstrings.
5301 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5302 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5304 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5305 (thanks to Eric Marsden)
5306 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5307 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5308 * Bug fix: The SPARC backend can now compile functions involving
5309 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5310 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5311 to a functions expecting a PATHNAME-DESIGNATOR.
5312 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5313 lambda lists. (thanks to Alexey Dejneka)
5314 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5315 functions so that EXPORTing the name of the class doesn't cause
5316 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5317 to Antonio Martinez for reporting this)
5318 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5319 constant-folded without failing an assertion. (thanks to Einar
5320 Floystad Dorum for reporting this)
5321 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5322 types are now dealt with more correctly by the compiler.
5323 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5324 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5325 behaviour analogous to RENAME-FILE. This puts its behaviour more
5326 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5328 * The fasl file version number has changed again. (because of the
5329 bug fix involving the names of PCL MAKE-INSTANCE functions)
5331 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5332 * bug fix: Floating point exceptions are treated much more
5333 consistently on the x86/Linux and PPC/Linux platforms.
5334 * Array initialization with :INITIAL-ELEMENT is now much faster for
5335 cases when the compiler cannot open code the array creation, but
5336 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5337 array accesses have also seen a speed increase.
5338 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5339 specified. (This was at the root of some bad interactions between
5340 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5342 * bug fix: Internal error arguments for undefined functions are now
5343 computed correctly on the PPC/Linux platform.
5344 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5345 Raymond Toy's patch for CMU CL)
5346 * Support for the Solaris 9 operating environment has been included
5347 (thanks to Daniel Merritt)
5348 * A very ugly but hopefully complete draft of the missing FFI chapter
5349 of the manual has been created by reformatting the corresponding
5350 CMU CL manual chapter into (currently very ugly and incoherent)
5351 DocBook and bringing it up to date for SBCL behavior. Thus, the
5352 manual is now essentially complete, at least by my extreme
5353 once-and-only-once standards, whereby it's acceptable to refer to
5354 the doc strings of SB-EXT functions as the primary documentation.
5355 * The fasl file version number has changed again, due to cleanup of
5356 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5357 is no longer a static symbol.)
5359 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5360 * SBCL now builds with OpenMCL (version 0.12) as the
5361 cross-compilation host; also, more progress has been made toward
5362 bootstrapping under CLISP.
5363 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5365 * bug 158 fixed: The compiler can now deal with integer loop
5366 increments different from 1; fixing this turned out also to fix
5368 * bug 169 fixed: no more bogus warnings about using lexical bindings
5369 despite the presence of perfectly good SPECIAL declarations (thanks
5370 to David Lichteblau)
5371 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5372 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5373 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5375 * bug 180 fixed: Method combination specifications no longer ignore
5376 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5377 * bug fix: Structure type predicate functions now check their argument
5378 count as they should.
5379 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5380 correctly. (thanks to Pierre Mai)
5381 * minor incompatible change: The --noprogrammer option is deprecated
5382 in favor of the new --disable-debugger option, which is very similar.
5383 (The major difference is that it takes effect at a slightly different
5384 time at startup, causing handling of errors in --sysinit and
5385 --userinit files will be affected differently.) The
5386 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5387 been added to allow this functionality to be controlled from ordinary
5388 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5389 maintainers, who might want to run non-interactive scripts to
5390 build SBCL cores which will later be used interactively.)
5391 * minor incompatible change: The LOAD function no longer, when given
5392 a wild pathname to load, loads all files matching that pathname.
5393 Instead, an error of type FILE-ERROR is signalled.
5395 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5396 * bug 147 fixed: The compiler preserves its block link/count
5397 invariants more correctly now so that it doesn't crash. (thanks
5399 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5401 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5402 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5403 no-value-for-this-character as NIL (as specified by ANSI).
5404 * HOST-NAMESTRING on physical pathnames now returns a string that is
5405 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5406 (thanks to Christophe Rhodes)
5407 * The Alpha port handles icache flushing more correctly. (thanks to
5409 * More progress has been made toward bootstrapping under CLISP. (thanks
5410 to Christophe Rhodes)
5411 * The fasl file format has changed again, because dynamic loading
5412 on OpenBSD (which has non-ELF object files) motivated some cleanups
5413 in the way that foreign symbols are transformed and passed around.
5414 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5415 is no longer treated as whitespace by the reader, but instead as
5416 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5417 |A
\7fB|, instead of A as it used to.
5419 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5420 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5421 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5422 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5423 this as of 0.7.1.45, but was left out of the previous news section
5424 (thanks to Dan Barlow)
5425 * SBCL now runs on the Solaris operating system on SPARC architectures
5426 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5427 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5428 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5429 * SPARC backend cleanups, allowing builds of cores optimized for V8
5430 and V9 SPARCS, and also emission of code targeted to a particular
5431 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5433 * SBCL is closer to bootstrapping under CLISP, thanks to various
5434 fixes by Christophe Rhodes.
5435 * The fasl file format has changed again, to allow the compiler's
5436 INFO database to support symbol macros.
5437 * The user manual (in doc/) is formatted into HTML more nicely.
5438 (thanks to coreythomas)
5439 * The system is smarter about SUBTYPEP relationships, especially
5440 those involving NOT types (including types such as ATOM which are
5441 represented internally using NOT types). Thus SUBTYPEP is less
5442 likely to return (VALUES NIL NIL) in general, and in particular
5443 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5445 * The fasl file format has changed again, because the internal
5446 representation of types now includes a new slot to support the new
5447 SUBTYPEP-of-NOT-types logic.
5448 * (not a change in the main branch of SBCL, but a related prototype
5449 which can hopefully be merged into the main branch of SBCL in the
5450 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5451 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5452 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5453 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5454 dispatch macro character combinations. (thanks to Alexey Dejneka)
5455 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5456 that superficially look like logical namestrings correctly.
5457 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5459 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5460 default supplied-p) for &optional and &key arguments. (thanks to
5463 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5464 * incompatible change: The compiler is now less aggressive about
5465 tail call optimization, doing it only when (> SPACE DEBUG) or
5466 (> SPEED DEBUG). (This is an incompatible change because there are
5467 programs which relied on the old CMU-CL-style behavior to optimize
5468 away their unbounded recursion which will now die of stack overflow.)
5469 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5470 for non-GENCGC systems has been increased to 20M (since that
5471 seems much closer to the likely performance optimum for modern
5472 systems than the old 4M value was)
5473 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5474 and *DEBUG-PRINT-LEVEL*
5475 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5476 of CMU CL's support for SPARC, and various endianness and other
5477 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5478 * new syntactic sugar for the Unix command line: --load foo.bar is now
5479 an alternate notation for --eval '(load "foo.bar")'.
5481 ** The system now detects stack overflow and handles it gracefully,
5482 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5483 optimization settings. (This is a good thing in general, and
5484 its introduction in this version should be particularly timely
5485 for anyone whose code fails because of suppression of tail
5487 ** The system now hunts for the C variable "environ" in a more
5488 devious way, to avoid segfaults when the C library version differs
5489 between compile time and run time. (thanks to Christophe Rhodes)
5490 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5491 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5492 ** The compiler no longer issues bogus style warnings for undefined
5493 classes in the same source file as the DEFCLASSes which defined
5494 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5496 ** fixes in CONDITION class precedence list for undefined function
5497 errors (thanks to Alexei Dejneka)
5498 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5499 correctly. (thanks to Dan Barlow)
5500 ** portability fixes aiming at bootstrapping under CLISP (thanks
5501 to Dave McDonald and Christophe Rhodes)
5502 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5503 ** fixes in type translation and and type inference (thanks to
5505 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5506 ** various fixes in the new ports (thanks to Dan Barlow)
5507 * several changes related to debugging:
5508 ** suppression of tail recursion, as noted above
5509 ** stack overflow detection, as noted above
5510 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5511 is now the default. (For some time encapsulation has been more
5512 reliable than the breakpoint-based :ENCAPSULATE NIL
5513 implementation, at least on X86 systems; and I just noticed that
5514 encapsulation also seems closer to the spirit of the ANSI
5517 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5519 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5520 up properly again. (There was a packaging bug in 0.7.0 which
5521 left their definitions in SB-SYS::LOAD-FOREIGN and
5522 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5523 vital for most things which interface to C-level interfaces,
5524 like extensions working with sockets or databases or
5525 Perl-compatible regexes or whatever, and the need to fix
5526 this bug is the main reason that 0.7.1 was released so
5528 ** DEFGENERIC is now choosier about the methods it redefines, so that
5529 reLOADing a previously-LOADed file containing DEFGENERICs does
5530 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5531 cycle now works as it should. (thanks to Alexey Dejneka)
5532 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5533 fixed by Christophe Rhodes. (He actually submitted this patch
5534 months ago, and I delayed until after 0.7.0.)
5535 ** Bug 111 (internal compiler confusion about runtime checks on
5536 FUNCTION types) was fixed by Alexey Dejneka.
5537 * Some internal cleanups (getting rid of variables which aren't
5538 needed now that the byte interpreter is gone) caused the fasl
5539 file format number to change again.
5541 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5542 * major incompatible change: The default fasl file extension, i.e. the
5543 default extension for files produced by COMPILE-FILE, has changed
5544 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5546 ** There are many changes in the implementation of the compiler.
5547 SBCL is now essentially a compiler-only implementation of ANSI
5548 Common Lisp. EVAL still "interprets" a few special cases, but
5549 almost all the interesting cases are handled by creating
5550 a LAMBDA expression, calling COMPILE on it, then calling
5551 FUNCALL on the result.
5552 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5553 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5554 Since the code is newer, there might still be some new bugs
5555 (though not as many as before Martin Atzmueller's fixes:-). But
5556 the new code is substantially simpler and clearer, and hopefully
5557 any remaining bugs will be simpler, less fundamental, and more
5558 fixable then the bugs in the old code.
5559 ** The revised compiler is still a little unsteady on its feet.
5561 *** The debugging information it produces (particularly the names
5562 of FUNCTION objects) is sometimes much less useful than what
5563 the old compiler produced.
5564 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5565 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5566 within a MACROLET) has been temporarily weakened.
5567 ** There are new compiler optimizations for various functions:
5568 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5569 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5570 *** the math functions TRUNCATE, FLOOR, and CEILING
5571 *** the function-of-all-trades COERCE
5572 Mostly these should be transparent, but there's one
5573 potentially-annoying problem (bug 117): when the compiler
5574 inline-expands a function and does type analysis on the result,
5575 it can create control paths which have type mismatches, and
5576 when it can't prove that those control paths aren't taken,
5577 it will issue WARNINGs about the type mismatches. This is
5578 a particular problem in practice for the new sequence functions.
5579 It's not clear how this should be fixed, and for now, a
5580 workaround is given in the entry for 117 in the BUGS file.
5581 ** (Because of the interaction between the two previous items --
5582 occasional inlining problems and new inline expansions -- some
5583 of the new sequence function optimizations won't really kick in
5584 completely until debugging information, and then inlining, are
5585 straightened out in some future version.)
5586 * minor incompatible changes:
5587 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5588 DIRECTORY no longer implicitly promotes NIL slots of its
5589 pathname argument to :WILD. In particular, when you ask for the
5590 contents of a directory (which you used to be able to do without
5591 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5592 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5593 ** changes in behavior that ANSI explicitly defines to be
5594 implementation dependent:
5595 *** The new compiler-only implementation still conforms with ANSI,
5596 but acts a little different than before. Besides the obvious
5597 changes in performance tradeoffs (that the cost per form passed
5598 to EVAL has gone up, and the cost per form executed by EVAL
5599 has gone down), the behavior of the system changes a little
5600 because there are no longer any interpreted function objects.
5601 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5602 e.g. doing COMPILE on the output of interactive DEFUN is
5604 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5606 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5607 has changed from (:CL) to NIL.
5608 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5609 e.g. #\Newline and #\Tab, don't have names specified in the
5610 ANSI Common Lisp standard, is now based on their ASCII symbolic
5611 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5612 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5613 are no longer used for output.
5614 ** changes in internal implementation constants:
5615 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5616 4 million. (If your application spends a lot of time GCing and
5617 you have a lot of RAM, you might want to experiment with
5618 increasing it even more.)
5619 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5620 However, almost all old code should still continue to work without
5621 immediate update, as SB-C-CALL is now a (deprecated) nickname
5623 ** Old operator names in the style DEF-FOO are now deprecated in
5624 favor of new corresponding names DEFINE-FOO, for consistency with
5625 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5626 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5627 internal symbols, but a few supported extensions like
5628 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5629 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5630 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5631 etc. as you get deeper into recursive calls to the debugger
5632 command loop, instead of the old "5]", "5]]", "5]]]"
5633 sequence. (I was motivated to do this when squabbles between
5634 ILISP and SBCL left me very deeply nested in the debugger. In the
5635 short term, this change will probably provoke more ILISP/SBCL
5636 squabbles, but hopefully it will be an improvement in the long run.)
5637 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5638 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5639 function, since declaiming return types involving aliens is
5640 (1) annoyingly messy to do by hand and (2) vital to efficient
5641 compilation of code which calls such functions.
5642 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5643 longer reexported by the SB-EXT package. They're solely useful
5644 for alien code, so it seems more logical that you should get
5645 them from the SB-ALIEN package, not in SB-EXT.
5646 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5647 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5648 features. Instead, the code that they used to control is always
5649 built into the system.
5650 * many other bug fixes
5651 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5652 advantage of the new EVAL-WHEN stuff and to clean them up in
5653 general, and they are now more ANSI-compliant in a number of
5654 ways. Martin Atzmueller is responsible for a lot of this.
5655 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5657 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5658 *** correct ERROR type for various file operations
5659 *** some fixes for Lisp streams
5660 *** DEFMETHOD syntax checking
5661 *** changing old weird representation of debug information as
5662 strings (which, among their other deficiencies, don't transform
5663 correctly when you rename packages, and don't change their
5664 print representation when you change things like *PACKAGE*
5665 and *PRINT-LENGTH*) to symbols and lists of symbols
5666 He also made several improvements and fixed several bugs in DESCRIBE.
5667 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5669 *** misbehavior of WRITE-STRING/WRITE-LINE
5670 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5671 and several other LOOP problems as well
5672 *** DIRECTORY when similar filenames are present
5673 *** DEFGENERIC with :METHOD options
5674 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5675 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5676 *** argument ordering in FIND with :TEST option
5677 *** mishandled package designator argument in APROPOS-LIST
5678 *** various problems in the backquote readmacro
5679 *** a bug in APROPOS
5680 *** probably some others that I'm not describing very well here,
5681 since the CVS log documents them by reference to sbcl-devel
5682 messages, and the SourceForge archives aren't working well.:-(
5683 ** Dan Barlow improved the Alpha port (and is making progress on the
5684 PPC port, for those of you who think different).
5685 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5686 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5687 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5688 continues to work on the SPARC port (for those of you in a position
5689 to look down upon our little PC-compatible boxes from a great height).
5690 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5691 and uses that copy, rather than the current dynamic value, when
5692 it's trying to decide whether to truncate output. Thus e.g.
5693 (let ((*print-lines* 50))
5694 (pprint-logical-block (stream nil)
5696 (let ((*print-lines* 8))
5697 (print (aref possiblybigthings i) stream)))))
5698 should now truncate the logical block only at 50 lines, instead of
5699 often truncating it at 8 lines, as it did before.
5700 * The doc/cmucl/ directory, containing old CMU CL documentation
5701 from the time of the fork, is no longer part of the base system.
5702 SourceForge has shut down its anonymous FTP service, and with it
5703 my original plan for distributing the old CMU CL documentation
5704 there. For now, if you need these files you can download an old
5705 SBCL source release and extract them from it.
5706 * The fasl file version number changed again, for dozens of reasons,
5707 some of which are apparent above.
5709 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5710 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5711 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5712 patch, so that DISASSEMBLE output is much nicer.
5713 * The code in the SB-PROFILE package now seems reasonably stable.
5714 I still haven't decided what the final interface should look like
5715 (I'd like PROFILE to interact cleanly with TRACE, since both
5716 facilities use function encapsulation) but if you have a need
5717 for profiling now, you can probably use it successfully with
5718 the current CMU-CL-style interface.
5719 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5720 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5721 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5722 link now returns the dangling link itself, and for similar
5723 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5724 link itself. (In these cases the old code signalled an error and
5725 looped endlessly, respectively.) Thus, DIRECTORY now works even
5726 in the presence of dangling and cyclic symbolic links.
5727 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5728 is now a supported extension again, since the consensus on
5729 sbcl-devel was that it can be useful for ordinary development
5730 work, not just for debugging SBCL itself.
5731 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5732 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5733 that currently-defined functions might be redefined later with
5734 different return types.
5735 * Hash tables can be printed readably, as inspired by CMU CL code
5736 of Eric Marsden and SBCL code of Martin Atzmueller.
5737 * better error handling in CLOS method combination, thanks to
5738 Martin Atzmueller porting Pierre Mai's CMU CL patches
5739 * more overflow fixes for >16Mbyte I/O buffers
5740 * A bug in READ has been fixed, so that now a single Ctrl-D
5741 character suffices to cause end-of-file on character streams.
5742 In particular, now you only need one Ctrl-D at the command
5743 line (not two) to exit SBCL.
5744 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5746 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5747 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5748 does the right thing.
5749 * The implementation of some type tests, especially for CONDITION
5750 types, is now tidier and maybe faster, due to CMU CL code
5751 originally by Douglas Crosher, ported by Martin Atzmueller.
5752 * Some math functions have been fixed, and there are new
5753 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5754 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5755 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5756 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5757 likely to be built into sbcl-0.7.0.)
5758 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5759 CL, ported to SBCL by Martin Atzmueller)
5760 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5761 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5762 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5763 * There's a new slam.sh hack to shorten the edit/compile/debug
5764 cycle for low-level changes to SBCL itself, and a new
5765 :SB-AFTER-XC-CORE target feature to control the generation of
5766 the after-xc.core file needed by slam.sh.
5767 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5768 COMPILE-FILE is no longer supported, so that now every function
5769 gets an entry point, so that block compilation looks a little
5770 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5771 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5772 returns the number of bytes consed since the system started,
5773 rather than the number consed since the first time the function
5774 was called. (The new definition parallels ANSI functions like
5775 CL:GET-INTERNAL-RUN-TIME.)
5776 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5777 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5778 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5779 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5780 * Fasl file version numbers are now independent of the target CPU,
5781 since historically most system changes which required version
5782 number changes have affected all CPUs equally. Similarly,
5783 the byte fasl file version is now equal to the ordinary
5786 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5787 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5788 is no longer recognized. I apologize for this, because it was
5789 listed in SB-EXT as a supported extension, but I found that
5790 its existing behavior was poorly specified, as well as incorrectly
5791 specified, and it looked like too much of a mess to straighten it
5792 out. I have enough on my hands trying to get ANSI stuff to work..
5793 * many patches ported from CMU CL by Martin Atzmueller, with
5794 half a dozen bug fixes in pretty-printing and the debugger, and
5795 half a dozen others elsewhere
5796 * fixed bug 13: Floating point infinities are now supported again.
5797 They might still be a little bit flaky, but thanks to bug reports
5798 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5799 as flaky as they were.
5800 * The --noprogrammer command line option is now supported. (Its
5801 behavior is slightly different in detail from what the old man
5802 page claimed it would do, but it's still appropriate under the
5803 same circumstances that the man page talks about.)
5804 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5805 are now supported, and enabled by default. Thus, the compiler can
5806 handle many floating point and complex operations much less
5807 inefficiently. (Thus e.g. you can implement a complex FFT
5809 * The compiler now detects type mismatches between DECLAIM FTYPE
5810 and DEFUN better, and implements CHECK-TYPE more correctly, and
5811 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5812 thanks to patches from Martin Atzmueller.
5813 * various fixes to make the cross-compiler more portable to
5814 ANSI-conforming-but-different cross-compilation hosts (notably
5815 Lispworks for Windows, following bug reports from Arthur Lemmens)
5816 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5817 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5818 fixed thanks to Pierre Mai's CMU CL patches.
5819 * fixes to keep the system from overflowing internal counters when
5820 it tries to use i/o buffers larger than 16M bytes
5821 * fixed bug 45a: Various internal functions required to support
5822 complex special functions have been merged from CMU CL sources.
5823 (When I was first setting up SBCL, I misunderstood a compile-time
5824 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5825 * improved support for type intersection and union, fixing bug 12
5826 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5827 more obscure bugs as well
5828 * some steps toward byte-compiling non-performance-critical
5829 parts of the system, courtesy of patches from Martin Atzmueller
5830 * Christophe Rhodes has made some debian packages of sbcl at
5831 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5832 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5833 stable, but are nonetheless usable. When he's ready, I'd be happy
5834 to add them to the SourceForge "File Releases" section. (And if
5835 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5836 * new fasl file format version number (because of changes in
5837 internal representation of (OR ..) types to accommodate the new
5838 support for (AND ..) types, among other things)
5840 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5841 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5843 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5845 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5846 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5847 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5848 * DESCRIBE now works on structure objects again.
5849 * Most function call argument type mismatches are now handled as
5850 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5851 know whether the function will be redefined before the call is
5852 executed. (The compiler could flag local calls with full WARNINGs,
5853 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5854 it doesn't keep track of enough information to know whether calls
5855 are local in this sense.)
5856 * Compiler output is now more verbose, with messages truncated
5857 later than before. (There should be some supported way for users
5858 to override the default verbosity, but I haven't decided how to
5859 provide it yet, so this behavior is still controlled by the internal
5860 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5861 src/compiler/ir1util.lisp.)
5862 * Fasl file format version numbers have increased again, because
5863 support for the Gray streams extension changes the layout of the
5864 system's STREAM objects.
5865 * The Gray subclassable streams extension now works, thanks to a
5866 patch from Martin Atzmueller.
5867 * The full LOAD-FOREIGN extension (not just the primitive
5868 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5869 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5870 but like most other programs, it defaults to copying the Unix
5871 environment from the original process instead of starting the
5872 new process in an empty environment.
5873 * Extensions which manipulate the Unix environment now support
5874 an :ENVIRONMENT keyword option which doesn't smash case or
5875 do other bad things. The CMU-CL-style :ENV option is retained
5876 for porting convenience.
5877 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5878 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5880 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5882 * A patch from Martin Atzmueller seems to have solved the SIGINT
5883 problem, and as far as we know, signal-handling now works cleanly.
5884 (If you find any new bugs, please report them!)
5885 * The system no longer defaults Lisp source file names to types
5886 ".l", ".cl", or ".lsp", but only to ".lisp".
5887 * The compiler no longer uses special default file extensions for
5888 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5889 seems to expect a single default extension for all compiled code,
5890 and there's no compelling reason to try to stretch the standard
5891 to allow two different extensions.) Instead, byte-compiled files
5892 default to the same extension as native-compiled files.
5893 * Fasl file format version numbers have increased again, because
5894 a rearrangement of internal implementation packages made some
5895 dumped symbols in old fasl files unreadable in new cores.
5896 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5897 many fewer weird special cases.
5898 * Bug #17 (differing COMPILE-FILE behavior between logical and
5899 physical pathnames) has been fixed, and some related misbehavior too,
5900 thanks to a patch from Martin Atzmueller.
5901 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5902 by Tim Moore, ported to SBCL by Martin Atzmueller.
5903 * Martin Atzmueller fixed several filesystem-related problems,
5904 including bug #36, in part by porting CMU CL patches, which were
5905 written in part by Paul Werkowski.
5906 * More compiler warnings in src/runtime/ are gone, thanks to
5907 more patches from Martin Atzmueller.
5908 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5911 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5913 * DESCRIBE now works on CONDITION objects.
5914 * The debugger now handles errors which arise when trying to print
5915 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5917 * The build system now uses an additional file, customize-target-features.lisp,
5918 to allow local modifications to the target *FEATURES* list. (The point of
5919 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5920 debugging features enabled, without having to worry about propagating it
5921 into everyone's system when I do a "cvs update".) When no
5922 customize-target-features.lisp file exists, the target *FEATURES* list
5923 should be constructed the same way as before.
5924 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5925 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5926 warn about behavior which is undefined under the ANSI spec. Note: This
5927 is specified by ANSI, but it's not very popular with programmers.
5928 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5929 macro in the SBCL sources for an example of a workaround which you
5930 might use to make portable ANSI-standard code which does what you want.
5931 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5932 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5933 when it's used as a non-toplevel form. (This is required in order
5934 to implement the DEFCONSTANT-EQX macro.)
5935 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5936 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5937 funny things, due to bugs in the implementation of EVAL-WHEN
5938 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5939 non-toplevel DEFCONSTANTs are uncommon.)
5940 * The core file version number and fasl file version number have been
5941 incremented, because the old noncompliant DEFCONSTANT behavior involved
5942 calling functions which no longer exist, and because I also took the
5943 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5944 * fixed bug 1 (error handling before read-eval-print loop starts), and
5945 redid debugger restarts and related debugger commands somewhat while
5947 ** The QUIT debugger command is gone, since it did something
5948 rather different than the SB-EXT:QUIT command, and since it never
5949 worked properly outside the main toplevel read/eval/print loop.
5950 Invoking the new TOPLEVEL restart provides the same functionality.
5951 ** The GO debugger command is also gone, since you can just invoke
5952 the CONTINUE restart directly instead.
5953 ** The TOP debugger command is also gone, since it's redundant with the
5954 FRAME 0 command, and since it interfered with abbreviations for the
5956 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5958 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5959 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5960 some porting work by Martin Atzmueller)
5961 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5962 with a boatload of patches which he ported to SBCL. Now that those
5964 ** The system tries to make sure that its low-priority messages
5965 are prefixed by semicolons, to help people who like to use
5966 syntax highlighting in their ILISP buffer. (This patch
5967 was originally due to Raymond Toy.)
5968 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5969 patches originally written by Raymond Toy.
5970 ** The compiler understands coercion between single-value and
5971 multiple-VALUES type expressions better, getting rid of some very
5972 weird behavior, thanks to patches originally by Robert MacLachlan
5973 and Douglas Crosher.
5974 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5975 lambda lists, thanks to a patch originally by Pierre Mai.
5976 ** The system no longer bogusly warns about "abbreviated type
5978 ** The compiler gets less confused by inlining and RETURN-FROM,
5979 thanks to some patches originally by Tim Moore.
5980 ** The system no longer hangs when dumping circular lists to fasl
5981 files, thanks to a patch originally from Douglas Crosher.
5982 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5983 undefined function error.
5984 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5985 in structure slot initforms) for now, documented workaround instead:-|
5986 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5987 * fixed bug 5: added stubs for various Gray stream functions called
5988 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5989 installed, at least appropriate type errors are generated
5990 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5991 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5992 consistently in DEFMETHOD forms.
5993 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5994 it doesn't seem to affect SBCL after all
5995 * The C runtime system now builds with better optimization and many
5996 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5998 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6000 * The system is now under CVS at SourceForge (instead of the
6001 CVS repository on my home machine).
6002 * The new signal handling code has been tweaked to treat register
6003 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6004 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6005 downstream, e.g. in debug-int.lisp, has implicit dependencies
6006 on the unsignedness of integer representation of machine words,
6007 and that caused the system to bomb out with infinite regress
6008 when trying to recover from type errors involving signed values,
6009 e.g. (BUTLAST '(1 2 3) -1).)
6010 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6011 (This was one of the bugs Peter Van Eynde reported back in July.)
6012 * The system now uses code inspired by Colin Walters' O(N)
6013 implementation of MAP (from the cmucl-imp@cons.org mailing
6014 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6015 inline the MAP operation, and there is more than one
6016 sequence argument to the MAP call (so that it can't just
6017 do ETYPECASE once and for all based on the type of the
6018 single sequence argument). (The old non-inline implementation
6019 of the general M-argument sequence-of-length-N case required
6020 O(M*N*N) time when any of the sequence arguments were LISTs.)
6021 * The QUIT :UNIX-CODE keyword argument has been renamed to
6022 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6023 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6025 * Raymond Wiker's patches to port dynamic loading from Linux to
6026 FreeBSD have been added.
6027 * The BUGS file is now more nearly up to date, thanks in large part
6028 to Martin Atzmueller's review of it.
6029 * The debugger now flushes standard output streams before it begins
6030 its output ("debugger invoked" and so forth).
6031 * The core version number and fasl file version number have both
6032 been incremented, because of incompatible changes in the layout
6034 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6035 used to not be called for a saved Lisp image.)
6036 * Martin Atzmueller's version of a patch to fix a compiler crash,
6037 as posted on sbcl-devel 13 September 2000, has been installed.
6038 * Instead of installing Martin Atzmueller's patch for the
6039 compiler transform for SUBSEQ, I deleted the compiler transform,
6040 and transforms for some similar consing operations.
6041 * A bug in signal handling which kept TRACE from working on OpenBSD
6043 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6044 away by constant folding
6045 * The system now defines its address space constants in one place
6046 (in the Lisp sources), and propagates them automatically elsewhere
6047 (through GENESIS and the sbcl.h file). Therefore, patching the
6048 address map is less unnecessarily tedious and error-prone. The
6049 Lisp names of address space constants have also been systematized.
6050 * CVS tags like dollar-Header-dollar have been removed from
6051 the sources, because they have never saved me trouble and
6052 they've been source of trouble working with patches and other
6053 diff-related operations.
6054 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6055 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6057 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6059 * The system has been ported to OpenBSD.
6060 * The system now compiles with a simple "sh make.sh" on the systems
6061 that it's supported on. I.e., now you no longer need to tweak
6062 text in the target-features.lisp-expr and symlinks in src/runtime/
6063 by hand, the make.sh takes care of it for you.
6064 * The system is no longer so grossly inefficient when compiling code
6065 involving vectors implemented as general (not simple) vectors (VECTOR T),
6066 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6067 which dares to use the various sequence functions on non-simple
6068 vectors, takes less of a performance hit.
6069 * There is now a primitive type predicate VECTOR-T-P
6070 to test for the (VECTOR T) type, so that e.g.
6071 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6072 can now be compiled with some semblance of efficiency. (The old code
6073 turned the type declaration into a full call to %TYPEP at runtime!)
6074 * AREF on (VECTOR T) is still not fast, since it's still compiled
6075 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6076 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6077 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6078 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6079 without making full calls to SUBTYPEP at runtime.
6080 (Some analogous efficiency issues for non-simple vectors specialized to
6081 element types other than T, or for non-simple multidimensional arrays,
6082 have not been addressed. They could almost certainly be handled the
6083 same way if anyone is motivated to do so.)
6084 * The changes in array handling break binary compatibility, so
6085 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6086 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6087 instead of (VALUES T T).
6088 * By following the instructions that Dan Barlow posted to sbcl-devel
6089 on 2 July 2000, I was able to enable primitive dynamic object
6090 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6091 functionality is not implemented (since it calls ld to resolve
6092 library references automatically, requiring RUN-PROGRAM for its
6093 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6094 try to resolve library references) is now supported.
6095 * The system now flushes the standard output streams when it terminates,
6096 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6097 them at several other probably-convenient times, e.g. in each pass of
6098 the toplevel read-eval-print loop, and after evaluating a form given
6099 as an "--eval" command-line option. (These changes were motivated by a
6100 discussion of stream flushing issues on cmucl-imp in August 2000.)
6101 * The source transform for TYPEP of array types no longer assumes
6102 that an array whose element type is a not-yet-defined type
6103 is implemented as an array of T, but instead punts, so that the
6104 type will be interpreted at runtime.
6105 * There is now some support for cross-compiling in make.sh: each of
6106 the phases of make.sh has its own script. (This should be transparent
6107 to people doing ordinary, non-cross-compile builds.)
6108 * Since my laptop doesn't have hundreds of megabytes of memory like
6109 my desktop machine, I became more motivated to do some items on
6110 my to-do list in order to reduce the size of the system a little:
6111 ** Arrange for various needed-only-at-cold-init things to be
6112 uninterned after cold init. To support this, those things have
6113 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6114 symbols with such names are now uninterned after cold init).
6115 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6116 fasl files for cold load.
6117 ** Remove the old compiler structure pooling code (which used to
6118 be conditional on the target feature :SB-ALLOC) completely.
6119 ** Redo the representation of some data in cold init to be more compact.
6120 (I also looked into supporting byte compiled code at bootstrap time,
6121 which would probably reduce the size of the system a lot, but that
6122 looked too complicated, so I punted for now.)
6123 * The maximum signal nesting depth in the src/runtime/ support code has
6124 been reduced from 4096 to 256. (I don't know any reason for the very
6125 large old value. If the new smaller value turns out to break something,
6126 I'll probably just bump it back up.)
6127 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6129 * Many, many bugs reported by Peter Van Eynde have been added to
6130 the BUGS list; some have even been fixed.
6131 * While enabling dynamic object file loading, I tried to make the
6132 code easier to understand, renaming various functions and variables
6133 with less ambiguous names, and changing some function calling
6134 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6135 * While trying to figure out how to do the OpenBSD port, I tried to
6136 clean up some of the code in src/runtime/. In particular, I dropped
6137 support for non-POSIX signal handling, added various comments,
6138 tweaked the code to reduce the number of compilation warnings, and
6139 renamed some files to increase consistency.
6140 * To support the new automatic configuration functionality in make.sh,
6141 the source file target-features.lisp-expr has been replaced with the
6142 source file base-target-features.lisp-expr and the machine-generated
6143 file local-target-features.lisp-expr.
6144 * fixed a stupid quoting error in make.sh so that using CMU CL
6145 "lisp -batch" as cross-compilation host works again
6147 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6149 * DESCRIBE no longer tries to call itself recursively to describe
6150 bound/fbound values, so that it no longer fails on symbols which are
6151 bound to themselves (like keywords, T, and NIL).
6152 * DESCRIBE now works on generic functions.
6153 * The printer now prints less-screwed-up representations of closures
6154 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6155 * A private symbol is used instead of the :EMPTY keyword previously
6156 used to mark empty slots in hash tables. Thus
6157 (DEFVAR *HT* (MAKE-HASH-TABLE))
6158 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6159 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6160 now does what ANSI says that it should. (You can still get
6161 similar noncompliant behavior if bang on the hash table
6162 implementation with all the symbols you get back from
6163 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6164 This breaks binary compatibility, since tests for equality to
6165 :EMPTY are wired into things like the macroexpansion of
6166 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6168 * There's now a minimal placeholder implementation for CL:STEP,
6169 as required by ANSI.
6170 * An obscure bug in the interaction of the normal compiler, the byte
6171 compiler, inlining, and structure predicates has been patched
6172 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6173 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6175 * Missing ordinary arguments in a macro call are now detected even
6176 when the macro lambda list contains &KEY or &REST.
6177 * The debugger no longer complains about encountering the top of the
6178 stack when you type "FRAME 0" to explicitly instruct it to go to
6179 the top of the stack. And it now prints the frame you request even
6180 if it's the current frame (instead of saying "You are here.").
6181 * As specified by ANSI, the system now always prints keywords
6182 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6184 * The default initial SIZE of HASH-TABLEs is now smaller.
6185 * Type information from CLOS class dispatch is now propagated
6186 into DEFMETHOD bodies, so that e.g.
6187 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6189 is now basically equivalent to
6190 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6191 (DECLARE (TYPE SINGLE-FLOAT X))
6193 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6194 operation, without having to do run-time type dispatch.
6195 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6196 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6197 * Since I don't seem to be making big file reorganizations very often
6198 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6199 is overflowing my ability to conveniently back them up), I've finally
6200 checked the system into CVS. (The CVS repository is on my home system,
6201 not at SourceForge -- putting it on SourceForge might come later.)
6202 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6203 high-level GC-NOTIFY-FOO functions send their output. (There's
6204 still very little control of where low-level verbose GC functions
6205 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6206 less than it used to -- the GC-NOTIFY-FOO functions are now under
6207 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6208 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6209 in only one place in the source code, and propagates it automatically
6210 everywhere that it's needed. Thus e.g. when I bump the version from
6211 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6212 * The C source files now include boilerplate legalese and documentation
6213 at the head of each file (just as the Lisp source files already did).
6214 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6215 to his page will be replaced with a link to his new CLiki service.
6217 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6219 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6220 * The build process now looks for GNU make under the default name "gmake",
6221 instead of "make" as it used to. If GNU make is not available as "gmake"
6222 on your system, you can change this default behavior by setting the
6223 GNUMAKE environment variable.
6224 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6225 can build without error under CMU CL.
6227 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6229 * There is now a partial SBCL user manual (with some new text and some
6230 text cribbed from the CMU CL manual).
6231 * The beginnings of a profiler have been added (starting with the
6232 CMU CL profiler and simplifying and cleaning up). Eventually the
6233 main interface should be through the TRACE macro, but for now,
6234 it's still accessed through vaguely CMU-CL-style functions and macros
6235 exported from the package SB-PROFILE.
6236 * Some problems left over from porting CMU CL to the new
6237 cross-compilation bootstrap process have been cleaned up:
6238 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6239 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6240 part when getting rid of the compiler *BACKEND* stuff.)
6241 ** The value of *NULL-TYPE* was screwed up, because it was
6242 being initialized before the type system knew the final
6243 definition of the 'NULL type. This screwed up several key
6244 optimizations in the compiler, causing inefficiency in all sorts
6245 of places. (I found it because I wanted to understand why
6246 GET-INTERNAL-RUN-TIME was consing.)
6247 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6248 PROCLAIM FTYPE information. Unfortunately this broke binary
6249 compatibility again, since now the forms output by DEFGENERIC
6250 to refer to functions which didn't exist in 0.6.3.
6251 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6252 can use the new (as of 0.6.3) transform for SOME into MAP into
6254 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6255 values to (INTEGER 0 1000000), so that the time code will no longer
6256 occasionally get blown up by Linux returning 1000000 microseconds
6257 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6258 its output conform to the ANSI spec. (Alas, this makes its output
6259 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6260 * A full call to MAP NIL with a single sequence argument no longer conses.
6261 * fixes to problems pointed out by Martin Atzmueller:
6262 * The manual page no longer talks about multiprocessing as though
6263 it were currently supported.
6264 * The ILISP support patches have been removed from the distribution,
6265 because as of version 5.10.1, ILISP now supports SBCL without us
6266 having to maintain patches.
6267 * added a modified version of Raymond Toy's recent CMU CL patch for
6268 EQUALP comparison of HASH-TABLE
6270 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6272 * The system still can't cross-compile itself with
6273 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6274 entails), but at least it can compile more of itself that way
6275 than it used to be able to, and various buglets which were uncovered
6276 by trying to cross-compile itself that way have now been fixed.
6277 * This release breaks binary compatibility again. This time
6278 at least I've incremented the FASL file format version to 2, so that the
6279 problem can be detected reliably instead of just causing weird errors.
6280 * various new style warnings:
6281 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6282 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6283 ** using the lexical binding of a variable named in the *FOO* style
6284 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6285 as specified by ANSI.
6286 * *RANDOM-STATE* is no longer automatically initialized from
6287 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6288 default behavior of the system is to repeat its behavior every time
6289 it's run. If you'd like to change this behavior, you can always
6290 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6291 old convention there was no comparably easy way to get the system to
6292 repeat its behavior every time it was run.
6293 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6294 FTYPE declarations has been removed, in favor of their ANSI
6295 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6296 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6297 the types of their sequence arguments can be determined at compile time.
6298 This is done through a new open code expansion for MAP which eliminates
6299 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6300 argument types can be determined at compile time.
6301 * The optimizer now transforms COERCE into an identity operation when it
6302 can prove that the coerced object is already of the correct type. (This
6303 can be a win for machine generated code, including the output of other
6304 optimization transforms, such as the MAP transform above.)
6305 * Credit information has been moved from source file headers into CREDITS.
6306 * Source file headers have been made more standard.
6307 * The CASE macro now compiles without complaining even when it has
6310 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6312 * (Note that the way that the PCL macroexpansions were rewritten
6313 to accommodate the change in DEFGENERIC below breaks binary
6314 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6315 not run under sbcl-0.6.2. Once we get out of alpha releases,
6316 i.e. hit release 1.0.0, we'll probably try to maintain binary
6317 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6318 and sbcl-1.4.4. Until then, however, it might be fairly common
6319 for maintenance releases to break binary compatibility.)
6320 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6322 * The reporting of unhandled signals has been changed to print some
6323 explanatory text as well as the report form. (Previously only
6324 the report form was printed.)
6325 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6326 it defines, so that the compiler no longer issues undefined function
6327 warnings for compiled-but-not-yet-loaded generic functions.
6328 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6329 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6330 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6331 section of the ANSI spec are supported.
6332 * The "" nickname for the "KEYWORD" package has been removed.
6333 The reader still handles symbol tokens which begin with a package marker
6334 as keywords, but it doesn't expose its mechanism for doing so in the
6335 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6336 * The system now issues STYLE-WARNINGs for contradictory TYPE
6337 proclamations. (Warnings for contradictory FTYPE proclamations would
6338 be nice too, but those can't be done usefully unless the type system
6339 is made smarter about FUNCTION types.)
6340 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6341 systematized, so that "*target-*.lisp is supposed to exist only on the
6342 target and imply that there's a related file which exists on the
6343 host, and *host-*.lisp is supposed to exist only on the host and imply
6344 that there's a related file which exists on the target. This involves a
6345 lot of renaming. Hopefully the acute confusion caused by the renaming
6346 will be justified by the reduction in chronic confusion..
6347 ** runtime-type.lisp -> early-target-type.lisp
6348 ** target-type.lisp -> late-target-type.lisp
6349 ** early-host-format.lisp -> early-format.lisp
6350 ** late-host-format.lisp -> late-format.lisp
6351 ** host-error.lisp -> misc-error.lisp
6352 ** early-error.lisp -> early-target-error.lisp
6353 ** late-error.lisp -> late-target-error.lisp
6354 ** host-defboot.lisp -> early-defboot.lisp
6355 ** code/misc.lisp -> code/target-misc.lisp
6356 ** code/host-misc.lisp -> code/misc.lisp
6357 ** code/numbers.lisp -> code/target-numbers.lisp
6358 ** code/early-numbers.lisp -> numbers.lisp
6359 ** early-host-type.lisp -> early-type.lisp
6360 ** late-host-type.lisp -> late-type.lisp
6361 ** host-typep.lisp -> typep.lisp
6362 ** load.lisp -> target-load.lisp
6363 ** host-load.lisp -> load.lisp
6364 ** host-disassem.lisp -> disassem.lisp
6365 ** host-insts.lisp -> insts.lisp
6366 ** byte-comp.lisp -> target-byte-comp.lisp
6367 ** host-byte-comp.lisp -> byte-comp.lisp
6368 ** host-signal.lisp -> signal.lisp
6369 ** host-defstruct.lisp -> defstruct.lisp
6370 ** late-target-type.lisp -> deftypes-for-target.lisp
6371 Furthermore, several other previously target-only files foo.lisp (e.g.
6372 hash-table.lisp and random.lisp) have been split into a target-and-host
6373 foo.lisp file and a target-only target-foo.lisp file, with their key type
6374 definitions in the target-and-host part, so that the cross-compiler will
6375 know more about target types.
6376 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6377 gone away. In their place are various *BACKEND-FOO* variables
6378 corresponding to the slots of the old structure.
6379 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6380 into the target SBCL has been fixed.
6381 * The chill.lisp system for loading cold code into a running SBCL
6383 * Support for the CMU CL "scavenger hook" extension has been removed.
6384 (It was undocumented and unused in the CMU CL sources that SBCL was
6385 derived from, and stale in sbcl-0.6.1.)
6386 * Various errors in the cross-compiler type system were detected
6387 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6388 (enabling various consistency checks). Many of them were fixed,
6389 but some hard problems remain, so the compiler is back to
6390 running without *TYPE-SYSTEM-INITIALIZED* for now.
6391 * As part of the cross-compiler type system cleanup, I implemented
6392 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6393 * I have started adding UNCROSS calls throughout the type system
6394 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6395 on cross-compiler input files will be able to go away, and various
6397 * CONSTANTP now returns true for quoted forms (as explicitly required
6400 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6402 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6403 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6404 (MAKE-LIST -1). In the longer term, it ought to become true
6405 that declarations are assertions even at SAFETY 1. For now, it's not
6406 quite true even at SAFETY 3, but it's at least more nearly true..
6407 (Note that this change seems to increases the size of the system by
6408 O(5%) and to decrease the speed of the compiler by 20% or more.)
6409 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6410 for the problem of printing dozens of lines of distracting information
6411 about low-level system machinery as part of the top stack frame
6412 on entry to the debugger when an undefined function was called.
6413 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6414 is not reset to COMMON-LISP-USER.
6415 * Compilation of stuff related to dyncount.lisp has been made conditional
6416 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6417 smaller. The various dyncount-related symbols have been moved into
6418 a new "SB-DYNCOUNT" package.
6419 * tty-inspect.lisp has been renamed to inspect.lisp.
6420 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6421 feature has gone away. (When we eventually port to other flavors of
6422 libc and/or Unix, we'll try to make the differences between flavors
6423 invisible at the user level.)
6424 * Various other *FEATURES* tags, and/or their associated conditionals,
6425 have been removed if obsolescent, or given better documentation, or
6426 sometimes given more-mnemonic names.
6428 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6430 * tidied up "make.sh" script
6431 * tidied up system directory structure
6432 * better "clean.sh" behavior
6433 * added doc/FOR-CMUCL-DEVELOPERS
6434 * many many small tweaks to output format, e.g. removing possibly-confusing
6435 trailing #\. character in DESCRIBE-INSTANCE
6436 * (EQUALP #\A 'A) no longer signals an error.
6437 * new hashing code, including EQUALP hashing
6438 * tidied up Lisp initialization and toplevel
6439 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6440 * command line argument processing
6441 * added POSIX-GETENV function to deal with Unix-ish environment variables
6442 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6443 terminating SBCL on EOF
6444 * non-verbose GC by default
6445 * There is no more "sbcl" shell script; the sbcl file is now the C
6446 runtime executable (just like CMU CL).
6447 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6449 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6450 symbol and package information as Lisp native symbol and package objects
6451 instead of strings naming symbols and strings naming packages. This way,
6452 whenever packages are renamed (as in warm init), debug information is
6453 transformed along with everything else.
6454 * tweaked the optimization policy declarations which control the building
6455 of SBCL itself. Now, among other things, the system no longer saves
6456 source location debugging information. (This helps two problems at once
6457 by reducing SBCL size and by keeping SBCL from trying to look for its
6458 sources -- which may not exist -- when reporting errors.)
6459 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6460 debugging and testing purposes
6461 * cleaned up printing, making the printer call PRINT-OBJECT for
6462 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6463 methods, giving nearly-ANSI behavior
6464 * converted almost all special variables to use *FOO* naming convention
6465 * deleted PARSE-TIME functionality, since it can be done portably
6466 * moved some files out of cold init into warm init
6467 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6469 * regularized formatting of source files
6470 * added an install.sh script
6471 * fixed ridiculous memory usage of cross-compiler by making
6472 compiler/alloc.lisp not try to do pooling unless it can hook
6473 itself into the GC of the cross-compilation host. Now the system
6474 builds nicely on my old laptop.
6475 * added :SB-ALLOC in target-features.lisp-expr
6476 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6477 was not implemented)
6478 * re-did condition handling and note reporting in the compiler. Notes
6479 are no longer handled by signalling conditions. Style warnings
6480 and warnings are handled more correctly and reported in such a way
6481 that it's easy to find one or the other in your output (so that you
6482 can e.g. figure out which of many problems caused COMPILE-FILE to
6484 * changed the severity of several compiler warnings from full WARNING
6485 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6486 compiler note reporting so that it doesn't use the condition system
6487 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6488 COMPILE-FILE command)
6489 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6490 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6491 no longer supported, since their implementation was deeply intertwingled
6492 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6493 * removed bogus "support" for compiler macros named (SETF FOO), and
6494 removed the compiler macro for SETF INFO (but only after making a fool
6495 of myself on the cmucl-imp mailing list by posting a bogus patch for
6496 DEFINE-COMPILER-MACRO..)
6497 * Compiled files containing forms which have side effects on the Lisp
6498 reader (such as DEFPACKAGE forms) are now handled more correctly.
6499 (Compiler queuing of top level lambdas has been suppressed by setting
6500 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6501 * deleted various currently-unused source files, e.g. gengc.lisp. They
6502 may be added back at some point e.g. when porting to other architectures,
6503 but until they are it's distracting to distribute them and to try to
6505 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6506 there were so many of them they're just distractions, and UNCROSS is
6507 known to be able to handle the current sources
6508 * moved PROFILE functionality into TRACE, so that it will be clear
6509 how the wrapping and unwrapping of functions when you profile them
6510 interacts with the wrapping and unwrapping of functions when you
6511 trace them. (Actually, the functionality isn't there yet, but at least
6512 the interface specification is there. Hopefully, the functionality will
6513 arrive with some future maintenance release.)
6514 * removed host-oops.lisp
6515 * changed signature of QUIT function to allow UNIX-CODE argument
6516 * fixed READ-SEQUENCE bug
6517 * tweaked verbose GC output so that it looks more like the progress
6518 output that ANSI specifies for functions like LOAD
6519 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6520 * added <http://sbcl.sourceforge.com> to the banner information printed by