1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
3 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
4 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
5 (NT 5.0) is no longer being maintained.
6 * notice: Starting with this version, SBCL on Windows no longer supports
7 building with disabled thread support.
8 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
9 * enhancement: New feature sb-dynamic-core allows the runtime to be
10 rebuilt or relocated without requiring changes to the core file on
11 all linkage table platforms. Required on Windows. (Thanks to Anton
13 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
14 * enhancement: I/O on Windows unnamed pipes is interruptible
15 asynchronously using interrupt-thread, timers when running on Windows NT
16 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
18 * enhancement: Support for the experimental safepoint-based stop-the-world
19 protocol on the PowerPC platform.
20 * bug fix: Non-blocking reads from the Windows console were not necessarily
21 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
22 * bug fix: stability of threads on Windows has been improved upon through
23 an updated stop-the-world protocol (thanks to Anton Kovalenko).
25 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
26 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
27 (COMPILE and COMPILE-FILE still do.)
28 * optimization: the SPARC backend now supports the precise generational
29 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
30 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
31 * enhancement: add experimental support for the SB-THREAD feature and the
32 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
33 Threads are enabled by default, and this version of SBCL is considered
34 to be the last and final release to officially support building with
36 * optimization: The compiler no longer rotates loops in some cases where
37 this transformation actually lead to worse code being generated.
38 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
39 symbol-macros by lexical bindings.
40 * bug fix: stack allocation was prevented by high DEBUG declaration in
42 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
43 (thanks to SANO Masatoshi)
44 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
45 :JUNK-ALLOWED was true.
46 * bug fix: type derivation inferred overly conservative types for
47 unions of array types. (lp#1050768)
49 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
50 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
51 source annotation of DISASSEMBLE output. Defaults to T.
52 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
53 WAIT-P argument added to WITH-RECURSIVE-LOCK.
54 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
56 * enhancement: Optional features (not enabled by default) allow the
57 use of signals for inter-thread synchronization to be reduced on certain
58 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
59 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
60 to test these experimental features. Known remaining bugs include minor
61 thread safety issues, less timely freeing of memory by GC, and certain
62 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
63 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
64 comparisons, particularly on almost-sorted inputs.
65 * bug fix: Reading floats with large exponents no longer takes too much time
66 before reporting that the exponent is too large.
67 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
68 correctly when the received datagram is larger than the provided buffer.
69 (lp#1023438, thanks to Robert Uhl)
70 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
71 a SYMBOL-VALUE form with a constant symbol argument.
72 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
73 into a DEFCAS defined place was used as the place.
74 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
76 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
77 lead to internal errors or crashes (lp#1058799).
78 * documentation: a section on random number generation has been added to the
81 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
82 * enhancement: implicit generic function warnings now specify the package
83 in which the new generic function is being created.
84 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
85 updates of CAS-able places (similar to Clojure's swap!).
86 * enhancement: run-program no longer decodes and re-encodes environment when
87 :environment argument is not provided. (lp#985904)
88 * enhancement: errors during compiler-macro expansion no longer cause
89 runtime errors, only a compile-time warning, otherwise behaving as if
90 the compiler macro had declined to expand.
91 * optimization: On x86-64, code alignment of block headers is done with
92 multi-byte NOPs now instead of repetitions of the single-byte NOP.
93 * optimization: MAP-INTO is substantially faster when the target sequence is
94 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
95 thanks to James M. Lawrence)
96 * optimization: the compiler no longer heap-conses to check exits in cases
97 where the exit function is dynamic extent, or when it can prove the exit
98 function cannot escape. (lp#1002534)
99 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
100 element type, and vectors that aren't SIMPLE-ARRAYs.
101 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
102 speed (around 1/3 the time in some cases), and a little better in terms of
103 comparison calls. (Thanks to Takeru Ohta)
104 * bug fix: On SPARC, a limitation on the number of code constants emittable
105 by the compiler has been lifted, allowing certain long functions to
106 compiled and assembled which had previously been unsupported; fixes
107 cl-bench on this ISA (lp#1008996).
108 * bug fix: potential for infinite recursion during compilation of CLOS slot
109 typechecks when dependency graph had loops. (lp#1001799)
110 * bug fix: error forms reported with some program-errors were not escaped
112 * bug fix: functions from EVAL are now on more equal footing with functions
113 from COMPILE. (lp#1000783, lp#851170, lp#922408)
114 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
115 objects as its :METHOD-COMBINATION argument, not just lists designating
116 method combinations. (lp#936513)
117 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
119 * bug fix: restore build on solaris/sparc. (lp#1008506)
120 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
121 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
122 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
123 as keyword arguments no longer accidentally match unevaluated symbols
125 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
126 parameter was zero, now it signals an error. (lp#905817, fixed since
128 * bug fix: run-program with :pty t no longer makes the pty as the process's
130 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
133 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
134 * RANDOM enhancements and bug fixes:
135 ** bug fix: the range and distribution of random integers could be
136 catastrophically wrong when the compiler derived the type of its
137 argument as a disjoint set of small integers.
138 ** bug fix: the distribution of random integers is now completely
139 uniform even when the specified limit is not a power of two.
140 (Previously some values could be about 0.1 % more probable than
141 others in the worst case.) (lp#309467)
142 ** RANDOM on large integer arguments is generally faster and conses
143 less than before; this is visible for fixnums above a length of
144 about 24 bits, but extremely so for bignums: the old implementation
145 used time and space quadratical in the size of the argument there,
146 the new one is linear.
147 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
148 main entry point, SB-EXT:QUIT is deprecated.
149 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
150 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
151 * enhancement: FASL loading no longer grabs the world-lock.
152 * enhancement: GENCGC reclaims space more aggressively when objects being
153 allocated are a large fraction of the total available heap space.
155 * enhancement: backtraces show the correct number of arguments for frames
156 called with too many arguments.
157 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
159 * enhancement: ASDF has been updated 2.21.
160 * optimization: fewer uses of full calls to signed modular functions.
162 * optimization: typechecking alien values is typically 5 x faster.
163 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
165 * bug fix: file compilation performance issues when dumping subtypes
166 of CHARACTER (lp#994487)
167 * bug fix: fixed disassembly of some SSE instructions on x86-64.
168 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
169 OPEN. (lp#969352, thanks to Kambiz Darabi)
170 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
172 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
173 classoid even if X was not the proper name of the class. (lp#941102)
174 * bug fix: declaration leakage between lexical environments due to careless
175 use of NCONC in MAKE-LEXENV. (lp#924276)
176 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
177 *default-pathname-defaults* contains NAME or TYPE components.
178 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
179 from CL package, e.g. (loop . 10).
180 * bug fix: run-program with existent or non-existent files for :output or
181 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
182 returns NIL instead of signalling an obscure error.
183 * bug fix: fix miscompilation of some logand forms with large constant
184 arguments. (lp#974406)
185 * bug fix: account for funcallable-instance objects properly in ROOM.
186 * bug fix: incorrect octets reported for c-string decoding errors.
188 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
190 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
191 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
192 allowing faster release of memory back to the OS. (lp#991293)
193 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
194 existing deadline for the dynamic scope of its body.
195 * bug fix: compiler-internal interval arithmetic needed to be more
196 conservative about open intervals when operated on by monotonic but not
197 strictly-monotonic functions. (lp#975528)
198 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
199 it's also slightly faster. (lp#998926)
200 * bug fix: better error messages for malformed declarations.
202 * bug fix: define-condition didn't return the name of the defined condition.
204 ** improved docstrings: REPLACE (lp#965592)
206 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
207 * bug fix: fix copy-structure. When copying from stack to heap, garbage
208 could end up in the heap making GC unhappy.
209 (Thanks to James Knight, lp#911027)
211 ** SBCL can now be built using Clang.
212 ** ASDF has been updated 2.20.
213 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
214 * bug fix: don't complain about a too-hairy lexical environment for inlining
215 when the function has never been requested for inlining. (lp#963530)
217 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
218 * enhancements to building SBCL using make.sh:
219 ** --fancy can be specified to enable all supported feature enhancements.
220 ** --with-<feature> and --without-<feature> can be used to specify
221 which features to build with.
222 ** --arch option can be used to specify the architecture to build for.
223 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
224 full-blows cross-compilation.)
225 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
226 which allows specifying name of the default interning package for the
228 * enhancement: when *READ-EVAL* is true, arrays with element type other than
229 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
230 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
231 null alien when malloc() fails. (lp#891268)
232 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
233 conditions can be conveniently accessed through function with the same
234 name, analogously to CONTINUE.
235 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
236 from the printer by type, causing an error marker to be printed instead.
237 (Thanks to Attila Lendvai)
238 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
239 generally behave better when errors occur during printing.
240 * enhancement: the test runner now takes a --report-skipped-tests argument
241 to report the individual tests skipped as well as the number of skipped
243 * enhancement: undefined functions now appear in backtraces as ("undefined
244 function") instead of ("bogus stack frame") on x86oids.
245 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
246 deadlock errors are reported in an easier-to-decipher manner.
247 * enhancement: DESCRIBE on type designators reports the expansion in more
249 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
250 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
251 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
252 * enhancement: better disassembly of segment-prefixes on x86 and other
253 instruction prefixes (e.g. LOCK) on x86 and x86-64.
254 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
255 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
256 * optimization: SUBSEQ on vectors of unknown element type is substantially
258 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
259 be stack-allocated. (lp#902351)
260 * optimization: the compiler is smarter about representation selection for
261 floating point constants used in full calls.
262 * optimization: the compiler no longer refuses to coerce large fixnums to
263 single floats inline, except on x86 where this limitation is still
265 * optimization: truncation operations on integers with constant divisor
266 arguments 1 and -1 are optimized away.
267 * bug fix: deadlock detection could report the same deadlock twice, for
268 two different threads. Now a single deadlock is reported exactly once.
269 * bug fix: interval-arithmetic division during type derivation did not
270 account for signed zeros.
271 * bug fix: compiler error when typechecking a call to a function with
272 non-constant keyword arguments.
273 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
274 * bug fix: condition slot accessors no longer cause undefined function
275 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
276 form that defines them. (lp#896379)
277 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
279 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
280 bogusly report NIL, T.
281 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
282 required arguments ignored and performed assignments to others.
284 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
285 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
286 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
287 * bug fix: redefining a function whose previous definition contained an
288 unknown type no longer causes a style-warning. (lp#806243)
289 * bug fix: undefined functions now appear in backtraces as ("undefined
290 function") instead of ("bogus stack frame") on non-x86oids.
291 * bug fix: backtraces are no longer cut off at ("undefined function") when
292 called under certain circumstances (involving a caller-allocated stack
294 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
295 systems. (regression since 1.0.53)
296 * bug fix: GC deadlocks from dladdr() on certain platforms.
297 * bug fix: broken standard streams no longer automatically cause recursive
298 errors on debugger entry.
299 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
300 (regression since 1.0.53)
301 * bug fix: attempts to stack allocate a required argument to a function with
302 an external entry point caused compiler-errors.
303 * bug fix: compiler notes for failed stack allocation for a function argument
304 no longer claim to be unable to stack allocate the function.
305 * bug fix: COERCE now signals a type-error on several coercions to
306 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
307 * bug fix: missing failure-to-stack-allocate compiler notes for some
308 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
309 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
311 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
313 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
314 * minor incompatible changes:
315 ** RENAME-FILE on a symbolic links used to rename the linked-to file
317 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
318 directory, but now signal an error instead. Use TRUENAME to resolve the
319 pathname if you wish to delete the linked directory, and DELETE-FILE if
320 you wish to delete the
321 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
322 symbols associated with it will trigger a compile-time warning.
323 * thread-related enhancements:
324 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
325 Many thanks to generous donors!)
326 ** Threading is now more reliable on non-Linux platforms. We still don't
327 consider threads on non-Linux platforms good enough to enable them by
328 default, but they're in a clearly better shape now.
329 ** Deadlines supported now on all platforms.
330 ** All blocking functions in the threading API now have a :TIMEOUT
332 ** Semaphore notification objects have been added to SB-THREAD.
333 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
334 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
335 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
336 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
337 using an API anologous to defining new SETFable places.
338 * GC-related enhancements and bug fixes:
339 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
340 and Gb suffixes. Default is megabytes as before.
341 ** on GENCGC targets, the default dynamic space size is now 512Mb for
342 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
343 exception, defaulting to mere 444Mb to fit under default ulimits.) The
344 new defaults are in place to prevent hitting swap on low-end systems.
345 Use build-time option --dynamic-space-size to build an SBCL with
346 another default, or the runtime option to adjust the size at startup: a
347 good size is at most equal to the amount of physical memory the system
349 ** on GENCGC targets, nursery and generation sizes now default to 5% of
351 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
352 refuses to create SIMPLE-FUN objects.
353 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
355 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
356 validation of pointer objects as GENCGC does, instead of a
357 comparatively weak bounds-check against the heap spaces.
358 * SB-BSD-SOCKETS bug fixes:
359 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
360 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
361 systems with getaddrinfo().
362 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
363 safe outside systems with getaddrinfo().
364 * enhancement: ASDF has been updated 2.019.
365 * enhancement: special-case TCO prevention for functions which never return
366 extended to untrusted types, keeping one more frame's worth of debug
367 information around in many cases.
368 * enhancement: debug-names of anonymous and local function are more
369 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
370 * enhancement: on win32, ABS of complex floats guards better against
371 overflows. (lp#888410)
372 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
373 process exiting with code 1. (lp#676987)
374 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
375 the system where on the filesystem the SBCL sources themselves are
376 located. (Thanks to Zach Beane)
377 * enhancement: the compiler is now able to derive tighter bounds for
378 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
379 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
380 correctly, even on wide-fixnum builds. (lp#887220)
381 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
382 resolved to directories.
383 * bug fix: type mismatch when assigning to lexical variables no longer
384 result in fasl-dumping internal type objects. (lp#890750)
385 * bug fix: type mismatch on (SETF AREF) and function return values no
386 longer result in fasl-dumping internal type objects.
387 * bug fix: With several combinations of argument types, for example (EXPT
388 <integer> <(complex double)>), EXPT now uses double-precision throughout
389 instead of partially calculating only to single-precision. (lp#741564;
390 thanks to Lutz Euler)
391 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
392 objects when interrupted by GC on PPC.
394 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
395 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
396 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
397 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
398 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
399 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
400 targets is now 63 bits (up from 61).
401 * enhancement: DESCRIBE now reports a lambda-list and source location
402 for complext setf-expanders.
403 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
404 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
405 of multiple-valued places to be set to NIL, instead of signalling an
406 error (per a careful reading of CLHS 5.1.2.3).
407 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
408 * bug fix: repair crash in x86oid darwin signal handling emulation
409 when built with certain compilers.
410 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
411 rotation arguments on x86-64. (lp#882151)
412 * bug fix: low-level control flow optimisations could result in bogus
413 code in functions with tail and non-tail calls to local functions on
415 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
416 to emit literal characters > (code-char 4095), for comparisons with
418 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
419 on 64 bit platforms. (lp#881445)
420 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
421 delete the wrong file when using relative pathnames. (lp#882877)
422 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
423 sequences and :KEY NIL.
425 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
426 * enhancement: ASDF has been updated to version 2.017.
427 * enhancement: the --core command line option now accepts binaries with
429 * enhancement: when built with :sb-core-compression, core files (regular
430 or executable) can be compressed with zlib. Use the :COMPRESSION
431 argument to SAVE-LISP-AND-DIE to specify a compression level.
432 * enhancement: --[no-]merge-core-pages determines whether the runtime
433 hints the operating system that identical core pages between SBCL
434 processes should share the same physical memory. Default is to only
435 enable this for compressed cores.
436 * optimization: SLEEP no longer conses.
437 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
438 or bit-vectors when using the standard pretty-print dispatch table.
439 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
441 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
442 AREF, CHAR, etc. (lp#826971)
443 * bug fix: compiler-errors causes by integer arguments with composed of
444 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
445 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
446 expressions. (lp#770184)
447 * bug fix: complex single float literals are correctly aligned when used
448 as arguments of arithmetic operators.
449 * bug fix: on 32-bit platforms, rounding of double floats larger than a
450 fixnum is correct. (reported by Peter Keller)
451 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
452 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
454 * bug fix: redefining classes such that slots with custom allocation are
455 added or removed works again.
457 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
458 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
459 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
460 MAKE-SOCKET-STREAM if using SERVE-EVENT.
461 * enhancement: added support for socket keepalive timeout intervals
462 and probe counts on Linux.
463 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
464 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
465 * enhancement: added new toplevel options --quit and --non-interactive
467 * enhancement: the Windows port of SBCL now builds and runs on Wine
468 (thanks to Anton Kovalenko).
469 * enhancement: more, and more correct, SSE instruction definitions on
470 x86-64 (thanks to Alexander Gavrilov).
471 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
472 to help the processor execute spin loops, when applicable. Currently
473 implemented for x86 and x86-64.
474 * optimization: unsigned integer divisions by a constant are implemented
475 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
476 * optimization: improved type-derivation for LOAD-TIME-VALUE.
477 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
478 instructions. (lp#814688)
479 * bug fix: COERCE to unfinalized extended sequence classes now works.
480 (reported by Jan Moringen; lp#815155)
481 * bug fix: a compiler error during typecheck generation, reported by Eric
483 * bug fix: obsolete instance protocol fires when shared slots are added
485 * bug fix: fixed-format floating point printing with scaling factors.
487 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
488 backtraces. (lp#818460)
489 * bug fix: better backtraces for interrupted syscall frames on x86.
491 * bug fix: SSE comparison instructions can be disassembled even when one
492 operand is in memory. (lp#814702)
493 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
494 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
495 type information associated with the VALUES form.
496 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
498 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
499 first write (lp#561642).
500 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
501 * bug fix: bound propagation involving conversion of large bignums to
502 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
504 * bug fix: &REST to &MORE conversion still works in unsafe call to known
505 functions; reported by Lutz Euler (lp#826459).
506 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
509 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
510 * enhancement: errors from FD handlers now provide a restart to remove
511 the offending handler.
512 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
514 * enhancement: location of user or system initialization file can now easily
515 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
516 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
517 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
518 the thunk, as a keyword argument, :arguments.
519 * enhancement: constraint propagation is simplified (and sped up) when
520 COMPILATION-SPEED > SPEED.
521 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
522 * enhancement: debugger understands &MORE arguments better.
523 * optimization: extracting bits of a single-float on x86-64 has been
524 optimized. (lp#555201)
525 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
526 when (> SPEED SPACE).
527 * optimization: local call trampolines (x86 and x86-64) are emitted
529 * optimization: implicit value cells for dynamic-extent closed-over bindings
530 on x86 and x86-64 can hold unboxed values as well.
531 * meta-optimization: improved compilation speed, especially for large
532 functions. (lp#792363 and lp#394206)
533 * bug fix: bound derivation for floating point operations is now more
534 careful about rounding possibly closing open bounds. (lp#793771)
535 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
536 backwards incompatible change in 1.0.48.27)
537 * bug fix: occasional debugger errors in when a type-error occured in a
538 function with dynamic-extent &rest list.
539 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
540 boa-construtors can be used to initialized structure slots.
541 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
542 (lp#795705, regression)
543 * bug fix: DIRECTORY works better on logical pathnames.
544 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
545 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
546 * bug fix: the compiler no longer constant-folds NaNs in
547 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
548 * bug fix: FORMAT now handles floating point rounding correct, eg.
549 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
551 * bug fix: style warning during lambda-list introspection of generic
552 functions with both optional and key argments.
553 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
555 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
558 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
559 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
560 interrupts for its body.
561 * enhancement: source locations are now available for files loaded as
562 source, compile-time-too evaluation, and initialization files.
563 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
564 virtual source-file information, eg. overriding input-file of COMPILE-FILE
565 when a temporary file is used for compilation.
566 * enhancement: ASDF has been updated to version 2.015.3.
567 * enhancement: backtraces involving frames from the default evaluator are
569 * enhancement: RUN-PROGRAM works with user-defined binary input and output
571 * enhancement: more informative compile-time warnings and runtime errors for
572 type-errors detected at compile-time.
573 * enhancement: deadlock detection for mutexes and spinlocks.
574 * enhancement: dynamic-extent for &rest lists stack allocate only their
575 spines, not their argumets. While portable code should not rely on this,
576 particularly in combination with inlining, it should make dynamic-extent
577 easier to use safely.
578 * enhancement: SB-POSIX improvements:
579 ** WNOHANG and WUNTRACED are exported.
580 ** SYSCALL-ERROR now also provides the name of the failing system call.
581 * enhancement: --script improvements:
582 ** errors on standard input, output, and error streams are handled and
583 cause scripts to exit silently, making them easier to use in shell
585 ** backtraces from scripts now go to standard error instead of the
586 terminal even if one is available.
587 ** --script can be an argument, causing the script to be loaded from
589 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
590 strings to foreign memory.
591 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
592 a file, making it easier to understand heap dynamics.
593 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
594 allows the compiler to automatically elide rest-list allocation so long as
595 the call sites are in functions that the compiler knows cannot escape.
597 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
598 especially in safe code when none of the required arguments have changed
600 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
601 uninterruptible, as well as blocking reads from socket streams created
602 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
603 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
604 from the to-char if the from-char is not a dispatch-macro character.
605 * bug fix: references to undefined variables in function calls that are
606 optimized away now signal a runtime error. (lp#722734)
607 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
608 types from a function defined in the same file. (regression from
610 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
612 * bug fix: spurious errors during QUIT when standard streams were closed.
614 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
615 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
616 years, is now no longer supported.
617 * enhancement: read() and write() have been added to SB-POSIX.
618 * enhancement: types of DEFSTRUCT constructors are proclaimed more
619 accurately, allowing better typechecking of call-sites.
620 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
621 are no longer caught. (reverted to pre 1.0.34 behaviour)
622 * optimization: slightly faster ISQRT. (lp#713343)
623 * bug fix: better support for Solaris /bin/sh in sh-based tests.
624 * bug fix: TRACE behaves better when attempting to trace undefined
625 functions. (lp#740717)
626 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
627 to (FUNCALL #'(LAMBDA ...) ...).
628 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
629 a compile-time error. (lp#720382)
630 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
632 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
633 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
634 optimization. (regression from 1.0.45.18/1.0.46.15)
635 * bug fix: package locks did not protects against compile-time side-effects
636 of DEFUN. (lp#675584)
637 * bug fix: --dynamic-space-size argument is validated more carefully.
639 * bug fix: memory fault from printing a malformed simple-condition.
641 * bug fix: redefining classes so that slot-definition classes change now
642 engages the obsolete instance protocol. (lp#766271)
643 * bug fix: constant improper lists could break source coverage recording.
645 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
648 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
649 * bug fix: fix mach port rights leaks in mach exception handling code on
650 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
652 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
653 * enhancement: redefinition warnings for macros from different files. (lp#434657)
654 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
655 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
656 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
657 processed using EVAL -- now the appropriate toplevel form is reported instead.
658 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
659 declarations. (lp#726331)
660 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
661 that NIL/NULL is excluded from the type.
662 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
664 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
666 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
667 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
668 stack-allocated values out of their dynamic-extent. (lp#310175)
669 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
670 x86-64 builds caused a type-error.
671 * bug fix: calling COMPILE with something else than a lambda-expression as the
672 second argument reports a more sensible error. (lp#718905)
673 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
674 are detected. (lp#520607)
675 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
677 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
678 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
679 methods. (regression from 1.0.45.18)
680 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
681 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
682 * bug fix: several foreign functions accepting string also accepted NIL and
683 consequently caused a memory fault at 0 now signal a type-error instead.
685 * bug fix: under rare circumstances, constraint propagation could rewrite a
686 variable reference to refer to a variable not in scope, causing an error
687 during physical environment analysis when attempting to close over the
688 variable. (lp#551227)
689 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
691 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
692 * enhancement: largefile support on Solaris.
693 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
694 arguments (lp#710017)
695 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
696 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
698 * optimization: ERROR and CERROR are approximately 5 times faster.
699 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
700 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
701 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
702 up instance creation in those cases.
703 * optimization: arithmetic operations with multiple constant arguments in now
704 have them reduced at compile-time. (lp#676414)
705 * optimization: determining current character position on string-streams for
706 pretty-printing was overly slow.
707 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
708 lifetime analysis to overwrite closed-over variables (lp#681092).
709 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
710 were not handled correctly (lp#713063).
711 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
713 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
714 mistake. (lp#667297).
715 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
716 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
717 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
718 unintern the wrong symbol with the same name. (lp#693796)
719 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
720 making it possible to restore the initial table if it has been messed up.
723 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
724 * enhancement: ~/ and ~user/ are treated specially in pathnames.
725 Refer to documentation for details.
726 * enhancement: ASDF has been updated to version 2.010.
727 * optimization: mutated closed-over variables that are only accessed by
728 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
729 declared to be DYNAMIC-EXTENT) are stored directly in their containing
730 stack frame, rather than allocating a VALUE-CELL (lp#586103).
731 * optimization: UNWIND-PROTECT cleanup functions are now declared
733 * bug fix: backtracing function with &REST arguments now shows the full
734 argument list. (lp#310173)
735 * bug fix: return types for functions with complex lambda-lists are now
736 derived properly (lp#384892)
737 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
738 long string arguments slowed the compiler down to a crawl.
739 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
740 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
741 in the DEFMETHOD body.
742 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
743 messages, being instead replaced with the corresponding function name.
744 * bug fix: don't derive overly complex unions of numeric types for arithmetic
745 operators. (lp#309448)
747 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
748 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
749 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
750 * enhancement: ALLOCATION-INFORMATION also provides the page the object
752 * enhancement: default dynamic-space size can be configured at build-time
753 without touching source, using the --dynamic-space-size argument to make.sh.
754 * enhancement: DESCRIBE recognizes symbols naming optimization policy
755 qualities, and mentions ALWAYS-BOUND declarations.
756 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
758 * enhancement: ASDF has been updated to 2.009.
759 * enhancement: the system detects known type-erros in calls better,
760 signalling a full warning about violated proclaimed FTYPEs and violations
761 of derived FTYPEs within the same file, including self-calls.
762 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
763 * optimization: constant-folding exploits numeric and character types, in
764 addition member types.
765 * optimization: numeric, character and member types that are inhabited by
766 exactly one value are tested with EQL.
767 * optimization: more conditional branches are eliminated during IR1.
768 Branches are simplified before performing if/if-conversion, and simple
769 equivalent branches (that only read the same constant or variable) are
771 * improvements to the Windows port:
772 ** change: canonical unparsing form for pathname namestrings now uses / as
773 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
774 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
775 on Windows. (thanks to Kalyanov Dmitry)
776 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
778 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
779 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
780 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
781 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
783 * bug fix: interrupts arriving during CL:OPEN caused an error.
784 * bug fix: overeager character buffering could cause input to block
785 spuriously when reading from a pipe (lp#643686)
786 * bug fix: more efficient timer expiry should avoid starvation on systems
787 where number of SIGALRMs per second is restricted. (lp#375515)
788 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
789 * bug fix: compile-times no longer scale linearly with the size of
790 quoted lists in source-code. (lp#654289)
791 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
792 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
793 so badly. (lp#654485)
794 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
795 an error for eg. STRUCTURE. (lp#458015)
796 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
797 (lp#613871, thanks to Roman Marynchak)
798 * bug fix: more reliable &REST list type derivation. (lp#655203)
799 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
800 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
801 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
802 also declared NOTINLINE. (lp#655581)
803 * bug fix: the compiler could attempt to emit constant left shifts of
804 greater value than n-word-bits. (lp#309063)
805 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
806 type information for the function being set. (lp#659220)
807 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
808 containing self-calls were recompiled with a new signature, and failed
809 to warn when a self-call using the old signature was left in. (lp#655126)
810 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
811 :DEFAULT when the default external had character size other than 8 bits.
813 * bug fix: derived types of functions in the same file were implicitly
814 trusted, leading to potential heap corruption when those function were
815 defined incompatibly. (lp#657499)
816 * bug fix: existing ASDF source registries are ignored when building
818 * bug fix: short-form DEFSETF checks that the second argument is a symbol
819 (lp#655824, thanks to Roman Marynchak)
820 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
821 package-lock violation was detected. (lp#660752)
822 * bug fix: the system can store different docstrings for a single function
823 under different names. (lp#661631, regression from 1.0.29.24)
824 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
825 properly. (lp#384801)
826 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
827 of specified length could confuse the type derivation in unsafe code.
829 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
830 fork with multiple Lisp threads running is made on every platform,
831 not just Darwin. (lp#451111)
832 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
833 around when core was saved, which could cause undefined behaviour when the
835 * bug fix: Allow UNTRACE of functions that are no longer defined
836 (lp#667657, thanks to Attila Lendvai)
837 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
838 compile-time warning (lp#664373, thanks to Stas Boukarev)
840 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
841 * incompatible change: FD-STREAMS no longer participate in the serve-event
842 event-loop by default. (lp#316072)
843 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
844 affects streams from CL:OPEN.
845 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
846 default, but this is liable to change: applications needing serve-event
847 for socket streams should explicitly request it using :SERVE-EVENTS T
849 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
851 * enhancement: CLOS effective method functions and defclass slot typechecking
852 function now have debug names for use in backtraces and profiles.
853 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
855 * enhancement: symbols are printed using fully qualified names in several
856 error and warning messages which are often associated with package
857 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
858 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
859 thanks to Andrew Golding)
860 * bug fix: reading /proc files on Linux works. (lp#425199)
861 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
863 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
864 breaking code that tried to write the value of a printer control variable.
865 (lp#581564, thanks to Stas Boukarev)
866 * bug fix: WRITE compiler macro did not handle output stream designators
867 correctly. (lp#598374, thanks to Stas Boukarev)
868 * bug fix: better availability of names of foreign functions in backtraces
869 on Linux. (lp#626962, thanks to Stas Boukarev)
870 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
871 lp#627581, thanks to Josh Elsasser and Jim Wise)
872 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
873 thanks to Josh Elsasser)
874 * bug fix: using aliases for builtin classes as defmethod specializers
875 without adding DEFTYPEs for them works. (lp#618387)
876 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
878 * bug fix: legally dynamic-extent lists and vectors used as
879 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
880 * bug fix: inline-expansion creating references to dead lambda-variables
881 (lp#454681, thanks to Alexey Dejneka)
882 * bug fix: better error message for bogus numerical arguments to RANDOM.
883 (lp#598986, thanks to Stas Boukarev)
884 * bug fix: the compiler occasionally inlined references from incompatible
885 environments occurs. (lp#308951)
886 * bug fix: the compiler threw an error when trying to compile a local
887 function (labels or flet) known to take a specialized complex argument.
888 (not in launchpad, reported by sykopomp in #lispgames)
889 * bug fix: package-locks failed to protect against compile-time effects of
890 DEFUN when the symbol previously had a macro definition. (lp#576637)
891 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
892 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
893 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
894 * bug fix: evaluation in debugger REPL works using the global context when
895 in frames that do not have sufficient debug information.
896 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
898 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
900 * bug fix: interrupt taking longer than the requested period caused SLEEP
901 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
903 changes in sbcl-1.0.42 relative to sbcl-1.0.41
905 ** Cross-compilation host is now specified to make.sh using
906 command-line argument --xc-host=<command> instead of a positional
907 argument. (thanks to Daniel Herring)
908 ** Install location can be specified to make.sh using command-line
909 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
910 * optimization: The default implementation of
911 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
912 * enhancement: Explicit memory barrier operations are now available for use
913 by multithreaded code. See documentation for details.
914 * enhancement: Experimental support for threading on Linux/PPC.
915 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
916 * bug fix: EXPT signals an error if first argument is a zero and second
917 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
918 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
919 (lp#576594, thanks to Roman Marynchak)
920 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
921 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
923 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
924 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
925 cached, leading to many fewer expensive calls to
926 COMPUTE-APPLICABLE-METHODS.
927 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
928 CLASS argument, search for and call an appropriate optimized ctor function
930 * bug fix: WRITE always returns the correct value.
932 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
933 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
934 * bug fix: Name conflicts between symbols passed as arguments to a single
935 call to IMPORT no longer add multiple symbols with the same name to the
936 package (detectable via DO-SYMBOLS).
937 * bug fix: support building without the dlshim on darwin x86 and x86-64
939 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
941 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
942 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
944 * bug fix: linkage-table entries on PPC now no longer overflow their
945 space allocation (potentially causing crashes if they are written out
947 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
948 platforms, preventing the GC from seeing stale pointers on the control
949 stack in subsequent GCs (which would, and does, break invariants).
950 * bug fix: 32-bit unicode external formats now work on big-endian systems.
951 * bug fix: Literal characters with code points greater than about 32767
952 now work on PPC UNICODE builds.
953 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
954 high order bits are explicitly cleared out. In some contrived situations,
955 this could lead to wrong results in mixed real/complex float arithmetic.
956 * bug fix: Fix function/macro redefinition warnings when building with
957 clisp. (lp#576787, thanks to Josh Elsasser)
958 * new platform: experimental support for ppc/openbsd (thanks to Josh
960 * bug fix: Floating-point traps now work on ppc/linux.
962 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
963 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
964 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
965 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
966 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
967 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
968 SB-THREAD:GRAB-MUTEX.
969 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
970 contain additional data structures and tools for concurrent programming;
971 at the moment it contains a lock-free queue, and a lock-free mailbox
973 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
974 GET-MUTEX but takes &key rather than &optional parameters. Also added
975 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
977 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
978 SB-THREAD:WAIT-ON-SEMAPHORE.
979 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
981 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
982 conditions to defer the deadline for forever.
983 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
985 * enhancement: errors from NO-APPLICABLE-METHOD and
986 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
987 generic function call.
988 * enhancement: SB-BSD-SOCKET improvements
989 ** sockets and socket streams now have a more informative printed
990 representation based on the corresponding SOCKET-NAME and
992 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
994 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
995 CL:CLOSE when appropriate, and no longer disassociates the stream
996 from the socket if close failed. (lp#543951)
997 * improvements to the instrumenting profiler
998 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
999 ** optimization: counters no longer use locks for the overflow mode.
1000 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1001 incurred an off-by-one miscount.
1002 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1003 * enhancement: improved DEFMETHOD pretty-printing.
1004 * enhancement: perform range reduction when arguments are too large for
1005 x87's transcendentals (instead of returning 0). (lp#327192)
1006 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1007 some of CL-PPCRE's macros. (lp#570079)
1008 * enhancement: our machine code is slightly less hostile to valgrind on
1010 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1011 to Robert Swindells and Aleksej Saushev)
1012 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1013 * bug fix: a rare case of startup-time page table corruption.
1014 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1015 to timeouts could be left in an inconsistent state.
1016 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1017 * bug fix: misoptimization of multiplication by one in
1018 (SB-C::FLOAT-ACCURACY 0) policies.
1019 * bug fix: miscounts in SB-PROFILE.
1020 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1021 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1022 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1023 up itself" (March 2010) for further details.
1024 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1025 against length of the list if the element is found before the specified
1026 END is reached. (thanks to Alec Berryman, lp#554385)
1027 * bug fix: errors signalled during package graph modification no longer
1028 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1029 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1030 :SB-DOC feature. (lp#552564)
1031 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1032 * bug fix: more robust runtime executable path detection. (lp#375549)
1033 * bug fix: GCD always returns positive values. (lp#413680)
1034 * bug fix: Converting division to multiplication by reciprocal handles
1036 * bug fix: We were too eager in eliding range reduction tests on x87.
1037 The maximal magnitude is 2^63, not 2^64.
1038 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1040 * bug fix: Maybe restore buildability on Alpha.
1041 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1043 * bug fix: RANDOM-STATE can be printed readably again.
1044 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1045 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1046 types) could result in type mismatches during compilation.
1048 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1049 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1050 stack frame thrown from.
1051 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1052 compiler optimization qualities inside dynamic extent of its body.
1053 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1054 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1056 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1057 constraint propgation, allowing better compilation eg. when used to
1058 access structures with WITH-SLOTS. (lp#520366)
1059 * optimization: the compiler is now more aware of the type of the underlying
1060 storage vector for multidimensional simple arrays resulting in better code
1061 for accessing such arrays.
1062 * optimization: passing NIL as the environment argument to TYPEP no longer
1063 inhibits optimizing it. (lp#309788)
1064 * optimization: more efficient register usage when handling single-float
1065 arguments on x86-64. (thanks to Lutz Euler)
1066 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1067 pre-allocated temporary vectors. (lp#496249)
1068 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1069 in :INITIAL-CONTENTS. (lp#523612)
1070 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1071 functions. (lp#524707)
1072 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1073 WITH-SLOTS usages during compilation.
1074 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1075 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1076 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1077 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1078 instruction (tested on x86oid linux with ud2-breakpoints).
1079 * bug fix: slam.sh now works on win32.
1080 * bug fix: better differences of numeric types. (lp#309124)
1081 * bug fix: arrays declared intersection and union types can have their
1082 upgraded element type derived. (lp#316078)
1083 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1084 threads started during profiling. (lp#472499)
1085 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1087 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1088 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1089 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1090 values instead of signaling an error. (lp#309093)
1091 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1093 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1094 declarations (lp#497321)
1095 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1096 and failed to detect circular lists (lp#452008)
1097 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1099 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1100 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1101 due to it, so that handlers can run.
1102 * bug fix: reparsing undefined types if they have become defined since
1103 parsing. (lp#309128)
1104 * bug fix: missing &REST type in a proclamation for a function with both
1105 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1106 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1107 expanded calls (lp#542174)
1108 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1109 than just at toplevel form.
1111 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1112 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1113 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1114 but work on type specifiers.
1115 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1116 to name a type specifier.
1117 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1118 specifier is valid where "valid" basically means "would be accepted as
1119 second argument of TYPEP".
1120 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1121 returns the function's declared, or derived FTYPE.
1122 * new feature: SB-POSIX now supports accessing the d_ino member of
1123 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1124 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1125 provide for seeding a RANDOM-STATE object with user-provided data or
1126 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1127 attempt to initialize the returned state from the operating system's
1128 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1129 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1130 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1131 * bug fix: Fix grammar and style issues for the docstrings of
1132 printer-related variables and functions. (Thanks to mon_key; launchpad
1134 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1136 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1137 in a row even though a handler defered the deadline long into the
1139 * bug fix: A deadline handler was run without interrupts enabled for a
1140 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1141 in infinitely spinning, non-killable threads.
1142 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1143 before reaching the erring stack frame.
1144 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1145 real power. (launchpad bug lp#525949)
1146 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1147 GENCGC platforms. (launchpad bug lp#529014)
1148 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1149 (launchpad bug lp#525916)
1150 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1151 (Thanks to Robert Goldman)
1153 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1154 * optimization: ROUND with a single single-float or double-float argument
1155 is properly inlined when possible.
1156 * optimization: Slightly better code is generated for integer<->float
1157 conversions and for single-float<->double-float conversions on x86-64.
1158 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1159 code for 32-bit and 64-bit rotations on x86-64.
1160 * bug fix: The install script changes the ownership of directories as well
1161 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1162 launchpad bug lp#508485)
1163 * bug fix: TRUNCATE with a single single-float or double-float argument is
1164 properly inlined when possible. (launchpad bug lp#489388)
1165 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1166 no longer causes a compiler error on x86 and ppc.
1167 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1168 always relative to *READTABLE* rather than the passed argument.
1170 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1171 * minor incompatible change: threading support is now enabled by default
1173 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1175 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1176 are now caught and reported just like errors during macroexpansion.
1177 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1178 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1179 * enhancement: ASDF systems can now depends on SB-QUEUE.
1180 * fixes and improvements related to Unicode and external formats:
1181 ** bug fix: error handling and restart usage in the ucs-2 external format
1183 ** there is now an implementation of the ucs-4 external format.
1184 ** the utf-16 and utf-32 external formats are supported.
1185 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1186 in the environment. setenv() and unsetenv() are also provided. (reported by
1187 Fare Rideau; launchpad bug lp#460455)
1188 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1189 loading. This ensures sensible errors for .FASL files from other
1190 implementations on case-insensitive filesystems. (reported by Willem
1191 Broekema; launchpad bug lp#489417)
1192 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1193 Willem Broekema; launchpad bug lp#489698).
1194 * bug fix: some minor code rearrangements to reenable warning-free building
1195 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1196 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1198 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1201 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1202 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1203 * improvement: support O_LARGEFILE access to files larger than 2GB on
1204 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1205 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1206 definitions for methods specializing on the passed class itself.
1207 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1208 definitions for methods specializing on the passed class itself, or on
1210 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1211 about itself during the build (e.g. for M-? in Slime), if this flag is
1212 enabled in customize-target-features.lisp. This will increase the core
1213 size by about 5-6mb, though, so it's mostly interesting to SBCL
1215 * new feature: various GENCGC tuning parameters have been experimentally
1216 documented and exported from SB-EXT. See documentation for details.
1217 * fixes and improvements related to Unicode and external formats:
1218 ** the Unicode character database has been upgraded to the
1219 Unicode 5.2 standard, giving names and properties to a number of new
1220 characters, and providing a few extra characters with case
1222 ** improvement: restarts for providing replacement input/output on coding
1223 errors for fd-stream external formats.
1224 ** improvement: where :<encoding> is a keyword corresponding to an
1225 external format the system supports, it is now possible to specify
1226 (:<encoding> :replacement <character>) as an external format which will
1227 automatically substitute <character> on encoding or decoding errors for
1228 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1230 ** improvement: the file streams underlying the standard streams (such as
1231 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1232 which uses the replacement mechanism to handle encoding errors,
1233 preventing various infinite error chains and unrecoverable I/O
1235 ** minor incompatible change: the utf-8 external format now correctly
1236 refuses to encode Lisp characters in the surrogate range (char-codes
1237 between #xd800 and #xdfff).
1238 ** fix a typo preventing conversion of strings into octet vectors
1239 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1241 ** fix a bug in the octet multibyte handling of decoding errors and the
1242 USE-VALUE restart. (launchpad bug lp#314939)
1243 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1244 restart on fd-stream decoding errors.
1245 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1246 error is near the end of file.
1247 ** fix a double-error case in unibyte octet conversions, when the first
1248 use of USE-VALUE is ignored.
1249 ** fix bugs in handling of undefined code points in unibyte encodings.
1250 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1251 streams after an UNREAD-CHAR.
1252 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1253 object is allocated in a boxed region of dynamic space.
1254 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1255 fork with multiple Lisp threads running is made, instead of going
1256 ahead with unpredictable consequences. (reported by Leslie Polzer)
1257 * bug fix: uses of slot accessors on specialized method parameters within
1258 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1259 error while finalizing the class. This fix may cause classes with slot
1260 accessors to be finalized later than previously. (reported by Lars Rune
1261 Nøstdal; launchpad bug lp#473699)
1262 * bug fix: restore buildability on the MIPS platform. (regression from
1263 1.0.30.38, reported by Samium Gromoff)
1264 * bug fix: inspecting closures is less likely to fail with a type error.
1265 * bug fix: no timer starvation when setting the system clock back.
1266 (launchpad bug lp#460283)
1267 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1268 standard pprint dispatch table as specified by CLHS.
1269 * bug fix: give CLISP a hint about a type declaration to enable it to build
1270 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1272 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1273 (reported by Attila Lendvai; launchpad bug lp#310132)
1274 * bug fix: distinguish in type specifiers between arrays that might be
1275 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1276 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1277 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1278 * bug fix: setting the value of a symbol-macro within a method in the
1279 presence of type declarations works properly again. (reported by Iban
1280 Hatchondo; launchpad bug lp#485019)
1282 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1283 * optimization: faster FIND and POSITION on strings of unknown element type
1284 in high SPEED policies. (thanks to Karol Swietlicki)
1285 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1287 * improvement: better error signalling for bogus parameter specializer names
1288 in DEFMETHOD forms (reported by Pluijzer)
1289 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1291 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1293 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1294 removes previous default initargs (reported by Lars Rune Nøstdal and
1296 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1297 lambda-lists. (reported by Peter Seibel)
1298 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1299 correctly when starting from an executable core without saved runtime
1300 options (reported by Faré Rideau, thanks to Zach Beane)
1301 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1302 an optimization note instead. (reported by Martin Cracauer)
1303 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1304 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1305 new process group if it doesn't need to share stdin with the sbcl
1306 process. (thanks to Leslie Polzer)
1307 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1308 (reported by Stanislaw Halik)
1310 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1311 * improvement: stack allocation is should now be possible in all nested
1312 inlining cases: failure to stack allocate when equivalent code is manually
1313 open coded is now considered a bug.
1314 * improvements related to Unicode:
1315 ** the Unicode character database has been upgraded to the
1316 Unicode 5.1 standard, giving names and properties to a number of new
1317 characters, and providing a few extra characters with case
1319 ** the system now recognizes and produces names for Unicode Hangul
1320 syllable characters.
1321 ** the EBCDIC-US external-format is now supported for octet operations
1322 (as well as for stream operations).
1323 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1324 be used to output toplevel compile-time effects into a separate .CFASL
1326 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1327 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1329 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1331 * optimization: division of floating point numbers by constants uses
1332 multiplication by reciprocal when an exact reciprocal exists.
1333 * optimization: multiplication of single- and double-floats floats by
1334 constant two has been optimized.
1335 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1336 sufficient type information is available. (thanks to Leslie Polzer)
1337 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1338 known structure objects are as efficient as defstruct generated accessors.
1339 * optimization: unused vector creation can now be optimized away.
1340 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1341 * improvement: a STYLE-WARNING is signalled when a generic function
1342 clobbers an earlier FTYPE proclamation.
1343 * improvement: the compiler is able to track the effective type of
1344 generic function across method addition and removal even in the
1345 absence of an explicit DEFGENERIC.
1346 * improvement: DESCRIBE now reports on symbols naming undefined
1347 but assumed or declared function as well.
1348 * improvement: recompilation of systems using SB-GROVEL now works
1349 (thanks to Leslie Polzer)
1350 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1351 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1353 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1354 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1355 well as user defined declaration names.
1356 ** VARIABLE-INFORMATION is now aware of alien variables.
1357 * improvement: improved address space layout on OpenBSD (thanks to Josh
1359 * improvement: pretty-printing of various Lisp forms has been improved
1360 (thanks to Tobias Rittweiler)
1361 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1362 unused were deleted in safe code. (reported by John Fremlin)
1363 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1365 * bug fix: some out-of-line array predicates were missing (reported by
1367 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1369 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1370 (thanks to Larry D'Anna)
1371 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1372 as well. (reported by Josh Elsasser)
1373 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1374 leading to possible attempts to delete the same file twice. See docstring
1375 on DELETE-FILE for details. (reported by John Fremlin)
1376 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1377 designator argument, rather than its truename. (reported by Luis
1379 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1380 information about some array types. (thanks to Luis Oliveira)
1381 * bug fix: moderately complex combinations of inline expansions could
1382 be miscompiled if the result was declared to be dynamic extent.
1383 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1384 form (+ <variable> <integer>) were miscompiled under certain
1386 * bug fix: in some cases no compiler note about failure to stack allocate
1387 was emitted, even if the objects were in fact heap allocated.
1388 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1389 allocation could cause objects users might reasonably expect to
1390 be heap allocated to be stack allocated.
1391 * bug fix: DESCRIBE signalled an error for generic functions under
1392 certain circumstances. (thanks to Leslie Polzer)
1393 * bug fix: Fixed spelling of an error message.
1395 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1396 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1397 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1398 of SB-THREAD:THREAD-ERROR-THREAD.
1399 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1400 * new feature: docstrings for local and anonymous functions are no longer
1401 discarded. (thanks to Leslie Polzer)
1402 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1403 values in other threads.
1404 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1405 about object allocation.
1406 * optimization: division of a real float by a complex float is implemented
1407 with a specialised code sequence.
1408 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1409 keywords is an order of magnitude faster.
1410 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1411 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1412 methods, and similarly for non-standard metaclass classes as long as there
1413 are no methods additional on MAKE-INSTANCE.
1414 * optimization: more efficient type-checks for FIXNUMs when the value
1415 is known to be a signed word on x86 and x86-64.
1416 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1417 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1419 * optimization: compiler is smarter about delegating argument type checks to
1421 * optimization: several character functions are now compiled somewhat more
1422 efficiently. (reported by Lynn Quam)
1423 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1424 * improvement: less unsafe constant folding in floating point arithmetic,
1425 especially for mixed complex/real -float operations.
1426 * optimization: constant double and single floats are stored in native
1427 unboxed format on x86[-64].
1428 * optimization: smarter code for arithmetic operations with constant floats,
1429 complex floats, or integers on x86[-64].
1430 * optimization: smarter code for conjugate/multiplication of float complexes
1431 and abs/negate of floats on x86-64.
1432 * optimization: more efficient complex float and real float operations on
1434 * improvement: complex float division is slightly more stable.
1435 * improvement: DESCRIBE output has been reworked to be easier to read and
1436 contains more pertinent information.
1437 * improvement: failure to provide requested stack allocation compiler notes
1438 provided in all cases (requested stack allocation not happening without a
1439 note being issued is now considered a bug.)
1440 * bug fix: SB-POSIX exports the documented types and functions
1441 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1442 types. (reported by "abhi")
1443 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1444 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1445 (thanks to Paul Khuong)
1446 * bug fix: looping around HANDLER-CASE could silently consume stack space
1447 on each iteration. (reported by "foobar")
1448 * bug fix: better error signalling when calls to functions seeking elements
1449 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1450 (reported by Tobias Rittweiler)
1451 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1452 directory components now works as it used to. (various prolems reported by
1453 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1454 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1455 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1456 * bug fix: bogus undefined variable warnings from fopcompiled references to
1457 global variables. (thanks to Lars Rune Nøstdal)
1458 * bug fix: foreign function names should now appear in backtraces on
1459 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1460 * bug fix: SETF compiler macro documentation strings are not discarded
1462 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1463 (thanks to Alex Plotnick)
1464 * bug fix: SLEEP accepts large integer arguments, truncating them to
1465 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1466 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1467 * bug fix: compiler notes for expensive slot type checks could be emitted
1468 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1470 changes in sbcl-1.0.29 relative to 1.0.28:
1471 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1472 https://bugs.launchpad.net/sbcl
1473 Bugs can be reported directly there, or by sending email to
1474 sbcl-bugs@lists.sourceforge.net
1475 (no subscription required.)
1476 * minor incompatible change: under weak type checking policy integer
1477 types are weakened less aggressively.
1478 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1479 allowed to return, which causes SBCL to quit with exit status 0. Previously
1480 if the function returned with a small integer return value, that value
1481 was accidentally reused as the exit status.
1482 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1483 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1484 :HASH-FUNCTION argument. Refer to user manual for details.
1485 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1487 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1488 microseconds since the Unix epoch on all platforms.
1489 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1490 allows the compiler to safely elide boundedness checks for special
1492 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1493 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1494 efficiency measure for threaded platforms, but also valueable in
1496 * new feature: UNC pathnames are now understood by the system on Windows.
1497 * optimization: the compiler uses a specialized version of FILL when the
1498 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1500 * optimization: accesses to potentially non-simple arrays where element type
1501 is known are 50% faster.
1502 * optimization: compiler now generates faster array typechecking code.
1503 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1505 * optimization: multidimensional array accesses in the absence of type
1506 information regarding array rank are approximately 10% faster due to
1507 open coding of ARRAY-RANK.
1508 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1509 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1511 * optimization: result of call to VECTOR can now be stack allocated.
1512 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1513 as long as the resulting array is one-dimensional and has a known
1514 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1515 length of the list matches the known length of the vector does not
1516 allocate the list as an intermediate step. Ditto for VECTOR and simple
1518 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1519 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1520 known element type, and is known to be simple and one dimensional.
1521 * improvement: SBCL now emits a compiler note where stack allocation was
1522 requested but could not be provided (not in all cases, unfortunately)
1523 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1524 * improvement: pretty-printing loop has been implemented properly. (thanks
1525 to Tobias Rittweiler)
1526 * documentation: CLOS slot typechecing policy has been documented.
1527 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1528 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1529 pointer, leading to memory faults. (thanks to Bart Botta)
1530 * bug fix: better floating point exception handling on x86/OpenBSD.
1531 (thanks to Josh Elsasser)
1532 * bug fix: exit status from QUIT when called under --script was lost
1533 (reported by Hubert Kauker)
1534 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1535 same implementation of FILL to initialize the array, even if a more
1536 efficient one was available (reported by Stas Boukarev, thanks to
1538 * bug fix: potential miscompilation of array stack allocation on x86 and
1539 x86-64. (reported by Time Tossavainen)
1540 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1541 result in their subforms being treated as top level forms. (reported by
1543 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1544 than a machine register could leave garbage in the high bits of the
1545 result register (bug 316325).
1546 * bug fix: disable address space randomization Linux/x86-64 as well,
1547 not just x86-64. (reported by Ken Olum)
1548 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1549 generate incorrect code.
1550 * bug fix: #201; type inference for CONS and ARRAY types could derive
1551 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1552 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1553 could not be assigned to or bound with PROGV. (reported by Lorenz
1555 * bug fix: the value of CL:- in the inspector was the previous expression
1556 evaluated rather than the expression being evaluated.
1557 * bug fix: constants can no longer be locally declared special.
1558 * bug fix: signals delivered to threads started from foreign land (read:
1559 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1560 thread by blocking all signals and resignalling.
1561 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1562 from :INITFORM, if any.
1564 changes in sbcl-1.0.28 relative to 1.0.27:
1565 * a number of bugs in cross-compilation have been fixed, with the ultimate
1566 result that building under (at least) clisp should be much more reliable.
1567 * minor incompatible changes: echo-streams now propagate unread-char to the
1568 underlying input stream, and no longer permit unreading more than one
1570 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1571 frames, allowing for instance more reliable backtraces.
1572 * improvement: the debugger REPL can now reference lexical variables
1573 by name directly for code compiled with (DEBUG 3).
1574 * improvement: errors from malformed declarations now have better source
1575 paths associated with them. (thanks to Tobias Rittweiler)
1576 * optimization: faster local calls on x86/x86-64
1577 * bug fix: some error messages for out-of-bound array indexes confused the
1578 index and the bound. (thanks to Stas Boukarev)
1579 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1581 * bug fix: running regressions tests in shells without OSTYPE set now works.
1582 (reported by Harald Hanche-Olsen)
1583 * bug fix: more robust static space exhaustion signalling from
1584 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1585 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1586 docstring away instead of storing it under names such as (LAMBDA (X)).
1587 (reported by Leslie Polzer)
1588 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1589 (thanks to Ole Arndt for the patch)
1590 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1591 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1592 potentially-invalid effective methods in its cache.
1593 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1594 instances as well (thanks to Paul Khuong)
1595 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1596 SB-POSIX:WAITPID and their C equivalents.
1597 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1599 changes in sbcl-1.0.27 relative to 1.0.26:
1600 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1601 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1602 * improvement: the system either recovers from stack exhaustion or dies
1603 properly as opposed to leaving the user uncertain of whether the handler
1604 trampled on some random memory next to the stack or having to rely on
1605 --lose-on-corruption (which is still a good idea to use in production
1606 because stack exhaustion can happen in signal handlers which will likely
1608 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1609 1.0.25.37, reported by Harald Hanche-Olsen)
1610 * bug fix: work around signal delivery bug in darwin (regression from
1611 1.0.25.44, reported by Sidney Markowitz)
1612 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1614 changes in sbcl-1.0.26 relative to 1.0.25:
1615 * incompatible change: an interruption (be it a function passed to
1616 INTERRUPT-THREAD or a timer function) runs in an environment where
1617 interrupts can be enabled. The interruption can use
1618 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1619 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1620 potentially running out of stack. Keep in mind that in the absence
1621 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1622 acquiring a lock can enable interrupts.
1623 * incompatible change: GC-OFF and GC-ON are removed, as they were
1624 always unsafe. Use WITHOUT-GCING instead.
1625 * new feature: runtime option --disable-ldb
1626 * new feature: runtime option --lose-on-corruption to die at the
1627 slightest hint of possibly non-recoverable errors: running out of
1628 memory, stack, alien stack, binding stack, encountering a memory
1629 fault, etc. In the absence of --lose-on-corruption a warning is
1631 * enhancement: detect binding stack exhaustion
1632 * enhancement: detect alien stack exhaustion on x86/x86-64
1633 * improvement: generally more stable and reliable interrupt handling
1634 * improvement: there is a per thread interruption queue,
1635 interruptions are executed in order of arrival
1636 * improvement: a repeating timer reschedules itself when the it has
1637 finished, but expiration times are spaced equally. If an
1638 expiration time is in the past it will trigger after a short grace
1639 period that may give a chance to other things to run.
1640 * optimization: slightly faster gc on multithreaded builds
1641 * optimization: faster WITHOUT-GCING
1642 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1643 important locks so that the debugger/handler doesn't produce
1644 recursive errors or deadlock.
1645 * bug fix: real-time signals are not used anymore, so no more
1646 hanging when the system wide real-time signal queue gets full.
1647 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1649 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1650 * bug fix: fix random memory faults related to interrupts on alpha
1651 * bug fix: fix random memory faults related to interrupts on sparc
1652 * bug fix: fix deadlocks related to starting threads
1653 * bug fix: fix deadlines on locks on futex platforms
1654 * bug fix: restore errno in signal handlers
1655 * bug fix: fix deadlocks related to hash tables
1656 * bug fix: fix deadlocks in pcl
1658 changes in sbcl-1.0.25 relative to 1.0.24:
1659 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1660 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1661 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1662 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1663 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1664 better name and does not return values so stale on multiprocessor systems.
1665 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1667 * improvement: unithread builds keep track of MUTEX-VALUE.
1668 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1669 stream anymore making it thread safe to have a concurrent reader and
1670 a writer, for instance, in a pipe.
1671 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1672 arguments, making compiler-macros for SETF-functions able to inspect
1673 their constant arguments.
1674 * improvement: COMPILE-FILE reports times with millisecond accuracy
1675 (thanks to Luis Oliveira)
1676 * optimization: CHAR-CODE type derivation has been improved, making
1677 TYPEP elimination on subtypes of CHARACTER work better. (reported
1678 by Tobias Rittweiler, patch by Paul Khuong)
1679 * bug fix: setting alien structure fields of type struct by value now
1680 computes the right offset for the memory copy.
1681 * bug fix: compilation problem involving inlined calls to aliens with
1682 result type VOID. (reported by Ken Olum)
1683 * bug fix: #235a; sequential inline expasion in different policies no
1684 longer reuses the functional from the previous expansion site.
1685 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1686 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1687 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1688 cause an implied type redefinition. Regression from 1.0.21.29.
1689 * bug fix: sign-extension of small signed return values now works with C
1690 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1691 * improvements to the Windows port:
1692 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1693 Westfold, thanks to Rudi Schlatte)
1695 changes in sbcl-1.0.24 relative to 1.0.23:
1696 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1697 vector of a multidimensional SIMPLE-ARRAY.
1698 * new feature: the system now signals a continuable error if standard
1699 readtable modification is attempted. (thanks to Tobias Rittweiler)
1700 * new feature: DIRECTORY has been extended with a non-standard keyword
1701 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1702 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1703 has been robustified and documented better. (thanks to Robert Goldman)
1704 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1705 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1706 * tradeoff: constant FORMAT control strings are now compiled unless
1707 SPACE > SPEED (previously only when SPEED > SPACE.)
1708 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1710 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1712 * bug fix: lexical type declarations are now correctly reported by
1713 SB-CLTL2. (reported by Larry D'Anna)
1714 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1715 using UTF-8 as external format. (thanks to Luis Oliveira)
1716 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1717 are signalled correctly. (thanks to Stas Boukarev)
1718 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1719 designator. (thanks to Tobias Rittweiler)
1720 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1721 designator, and returns T instead of the function. (thanks to
1723 * bug fix: direct superclasses of STANDARD-CLASS and
1724 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1725 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1726 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1727 when no class with the named slot yet exists no longer causes a
1728 compile-time style-warning.
1729 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1730 in safe code. (reported by Didier Verna)
1731 * bug fix: #430; nested structure constructors can stack allocate.
1732 * bug fix: on some 64-bit platforms dynamic space size was truncated
1733 to #xffff0000 bytes. (reported by Benjamin Lambert)
1734 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1735 REPL unusable. (reported by Daniel Herring)
1736 * bug fix: return values of READ-SEQUENCE did not take :START into
1737 account on file streams, regressions since 1.0.12.22. (reported by
1738 Thomas Russ, patch by Paul Khuong)
1739 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1740 method specializer used to confuse permuation vector optimization.
1741 * bug fix: system inserted bogus implicit type declarations for local
1742 special variables in DEFMETHOD bodies.
1743 * bug fix: #354; duplicated frames in backtraces due to
1744 non-tail-call-optimized XEPs to functions with return type NIL
1746 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1747 initializes structure object slots according to DEFSTRUCT initforms,
1748 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1749 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1750 (reported by Bruno Haible and Stephen Wilson)
1751 * bug fix: #395; fill-pointer output streams used now support
1752 element-type BASE-CHAR as well.
1753 * bug fix: compiler error when attempting to derive return value of
1754 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1756 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1758 * bug fix: Mac OS X binaries should now be portable between Leopard
1761 changes in sbcl-1.0.23 relative to 1.0.22:
1762 * enhancement: when disassembling method functions, disassembly
1763 for the associated fast function is also produced.
1764 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1766 * optimization: printing with *PRINT-PRETTY* true is now more
1767 efficient as long as the object being printed doesn't require
1768 special handling by the pretty printer.
1769 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1770 now interact correctly with type declarations.
1771 * partial bug fix: PCL detects infinite recursion during wrapper
1772 validation. (thanks to Attila Lendvai)
1773 * bug fix: #426; nested function calls are inlined properly.
1774 Previously if FOO was an inline function, in calls of the form
1775 (FOO (FOO ...)) the outer call was not inlined.
1776 * bug fix: long long arguments passed in registers to alien
1777 functions on PowerPC Linux and NetBSD are now handled correctly
1778 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1780 changes in sbcl-1.0.22 relative to 1.0.21:
1781 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1782 for the shared object in the current directory, but passes the native
1783 namestring of the designated pathname to the operation system's shared
1784 object loading function as-it.
1785 * minor incompatible change: --disable-debugger toplevel option now takes
1786 effect before processing of initialization files and --eval or --load
1788 * new feature: new commandline argument: --script, which supports
1789 shebang lines. See documentation for details. (based on work by
1791 * new feature: SAVE-LISP-AND-DIE can save current values of
1792 --dynamic-space-size and --control-stack-size in the executable core,
1793 causing it to skip normal runtime option processing. See documentation
1794 for details. (thanks to Zach Beane)
1795 * enhancement: inoccous calls to EVAL or generic functions dispatching
1796 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1797 * enhancement: the system no longer resignals errors from --load and
1798 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1799 associated with the original error to be lost. (thanks to Ariel
1801 * enhancement: :DONT-SAVE keyword argument has been added to
1802 LOAD-SHARED-OBJECT for controlling interaction with
1803 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1804 the effects of an earlier LOAD-SHARED-OBJECT call.
1805 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1806 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1807 provided. (reported by Cedric St-Jean)
1808 * bug fix: circularity handling in the reader did not treat raw
1809 structure slots correctly. (reported by Cedric St-Jean)
1810 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1811 file descriptors when there were none.
1812 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1813 was broken. (reporteed by Willem Broekema)
1814 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1815 pathnames without a directory.
1816 * bug fix: COMPILE-FILE did not warn about undefined variable
1817 references at toplevel, and LOAD of the resulting fasl did
1818 not signal an error.
1819 * bug fix: functions with non-required arguments used to end up with
1820 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1821 * bug fix: redefining a function with non-required arguments didn't
1822 update the system's knowledge about its call signature properly.
1823 * bug fix: fixed #431; incompatible alien record type redefinitions
1824 are detected and handled. (reported by Neil Haven)
1825 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1826 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1828 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1829 after alien stack frames.
1830 * bug fix: strings passed to mk{s,d}temp lacked null termination
1832 changes in sbcl-1.0.21 relative to 1.0.20:
1833 * new feature: the compiler is able to track the effective type of a
1834 generic function across method addition and removal.
1835 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1836 appropriately typed structure slots without locking.
1837 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1838 information like those gathered by TIME using a programming-friendly
1840 * new feature: TIME reports time taken even if the form performs a
1841 non-local transfer of control.
1842 * enhancement: reduced conservativism on GENCGC platforms: on
1843 average 45% less pages pinned (measured from SBCL self build).
1844 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1845 mutate constant symbols or violate declaimed type of the symbol.
1846 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1847 sleeping on the semaphore in heavily contested semaphores.
1848 * bug fix: semaphores and condition variables were not interrupt
1850 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1851 owned by other threads anymore.
1852 * bug fix: FIND on lists called KEY outside the specified
1853 subsequence. (reported by budden)
1854 * bug fix: LOG doesn't use single-float intermediate results when
1855 given mixed integer and double-float arguments, leading to better
1856 precision. (reported by Bob Felts)
1857 * bug fix: LOG with base zero returned values of inconsistent type.
1859 changes in sbcl-1.0.20 relative to 1.0.19:
1860 * minor incompatible change: OPTIMIZE qualities
1861 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1862 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1863 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1864 * documentation: some slot access efficiency guidelines have been
1865 added to the user manual.
1866 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1867 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1868 as ASSOC and MEMEBER.
1869 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1870 to more efficient EQ-comparison versions more often.
1871 * optimization: enhanced derivation of DOLIST iteration variable type
1873 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1875 * optimization: runtime lookup of function definitions can be
1876 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1877 * optimization: compiler is able to derive the return type of
1878 (AREF (THE STRING X) Y) as being CHARACTER.
1879 * optimization: CLRHASH on empty hash-tables no longer does pointless
1880 work. (thanks to Alec Berryman)
1881 * optimization: REPLACE deftransforms don't punt when :START1 or
1883 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1884 no longer emits a code deletion note. (reported by Andrew
1886 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1887 functions with an odd number of &OPTIONAL arguments, a &REST
1888 argument, and one or more &KEY arguments at the call site.
1889 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1890 arguments appeared at call sites as well.
1891 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1892 READ-LINE &co can no longer read from them afterwards. (reported
1894 * bug fix: fixed #427: unused local aliens no longer cause compiler
1895 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1897 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1898 alien-stack leakage. (reported by Andy Hefner)
1899 * bug fix: PROGV signals an error when an attempt to violate declared
1900 type of a variable or bind a constant is made.
1901 * bug fix: SET signals an error when an attempt to violate declared
1902 type of a variable is made.
1903 * bug fix: restart computation during the execution of a restart
1904 test function no longer causes infinite recursion. (reported by
1906 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1907 signals an error. (thanks to Pierre Mai)
1908 * bug fix: EXPORT left symbol unexported in conflict situations.
1909 (thanks to Michael Weber)
1910 * bug fix: correctly handle name conflicts involving CL:NIL.
1911 (thanks to Michael Weber)
1912 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1913 conflicts arising from USEing package with conflicting symbols
1914 correctly. (thanks to Michael Weber)
1916 changes in sbcl-1.0.19 relative to 1.0.18:
1917 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1918 warnings that go otherwise unhandled will be muffled if they are
1919 of the type that's the value of this variable.
1920 * optimization: stack allocation is slightly more efficient on x86
1922 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1923 where a raw slot always is initialized using the initform whose
1924 type is not know sufficiently well a compile-time are now compiled
1925 correctly. (reported by John Morrison)
1926 * bug fix: compiler no longer makes erronous assumptions in the
1927 presence of non-foldable SATISFIES types.
1928 * bug fix: stack analysis missed cleanups of dynamic-extent
1929 arguments in non-let-converted calls to local functions.
1930 * improvements to the Windows port:
1931 ** adjusted address spaces for building on both Win32 and
1932 Win64. (thanks for John Connors)
1933 * fixed some bugs revealed by Paul Dietz' test suite:
1934 ** interval arithmetic during type derivation used inexact integer
1935 to single-float coercions.
1936 ** arithmetic operations involving large integers and single
1937 floats give the same results in compiled and interpreted code.
1938 ** deriving the result type of COERCE no longer signals an error
1939 if the derived type of the second argument is a MEMBER type
1940 containing invalid type specifiers.
1941 ** ADJOIN with constant NIL as second argument works correctly.
1942 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1944 changes in sbcl-1.0.18 relative to 1.0.17:
1945 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1946 profiles only the current thread.
1947 * minor incompatible change: changes to SYMBOL-VALUE of constants
1948 defined with DEFCONSTANT now signal an error.
1949 * enhancement: SB-SPROF now has support for wallclock profiling,
1950 and is also able to profile specific threads. REPORT output
1951 has also additional sorting options.
1952 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1954 * optimization: structure allocation has been improved
1955 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1956 ** out of line constructors are ~10% faster.
1957 ** inline constructors are ~15% faster.
1958 ** inline constructors are capable of dynamic extent allocation
1959 (generally on x86 and x86-64, in some cases on other platforms
1961 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1963 * optimization: file compiler is now able to coalesce non-circular
1964 lists, non-base strings, and bit-vectors. Additionally, constants
1965 are never referenced through SYMBOL-VALUE at runtime.
1966 * optimization: code defining methods on PRINT-OBJECT (and other
1967 generic functions in the COMMON-LISP package) now loads faster.
1968 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1970 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1971 fasl is now deleted. (reported by Attila Lendvai)
1972 * bug fix: READ-LINE always returned NIL for the last line in files.
1973 (reported by Yoshinori Tahara)
1974 * bug fix: more accurate disassembly annotations of foreign function
1975 calls. (thanks to Andy Hefner)
1976 * bug fix: trimming non-simple strings and non-string string
1977 designators when the there is nothing to trim works properly.
1978 (thanks to James Knight)
1979 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1980 (thanks to Travis Cross)
1981 * fixed some bugs revealed by Paul Dietz' test suite:
1982 ** NIL is a valid function name (regression at 1.0.13.38)
1983 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1984 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1985 fill pointers properly (regression at 1.0.12.23)
1986 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1987 displacement indices properly (regression at 1.0.12.23)
1989 changes in sbcl-1.0.17 relative to 1.0.16:
1990 * temporary regression: user code can no longer allocate closure
1991 variable storage on stack, due to bug 419 without explicitly
1992 requesting it. Please consult sbcl-devel for advice if you need to
1993 use this feature in the meanwhile.
1994 * new feature: runtime argument --control-stack-size can be used to
1995 adjust thread default control stack size.
1996 * enhancement: improved TIME output
1997 ** all times are reported using the measured accuracy (milliseconds
1998 for real and GC times, microseconds for everything else.)
1999 ** processor cycle counts on x86 and x86-64.
2000 ** interpreted forms are counted for both evaluator modes.
2001 ** number of lambdas converted by the compiler is reported.
2002 ** CPU percentage report (computed from real and total run time.)
2003 ** more comprehensive run time reporting, using a condenced format
2004 ** interperted form, lambda, and page fault counts are omitted
2006 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2008 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2009 * optimization: two argument forms of LAST are upto ~10% faster
2010 in normal SPEED policies.
2011 * optimization: NCONC no longer needs to heap cons its &REST list
2012 in normal SPEED policies.
2013 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2014 to Sidney Markowitz)
2015 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2016 regression since 1.0.9.1. (thanks to Eric Marsden)
2017 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2018 since 1.0.15.36. (thanks to Paul Khuong)
2019 * bug fix: LAST when always returned the whole list when given a bignum
2020 as the second argument.
2021 * bug fix: dynamic extent allocation of nested lists and vectors
2022 could leak to otherwise accessible parts.
2023 * bug fix: invalid optimization of heap-allocated alien variable
2025 * bug fix: fasl header checking is less vulnerable to different
2026 platform word lengths.
2027 * bug fix: more correct assembler syntax for GNU binutils
2028 2.18.50.0.4 support. (thanks to Marijn Schouten)
2029 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2031 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2032 declarations) successfully. (reported by Attila Lendvai)
2034 changes in sbcl-1.0.16 relative to 1.0.15:
2035 * minor incompatible change: revert the changes to sb-posix's error
2036 signaling added in 1.0.14.
2037 * minor incompatible change: change PROBE-FILE back to returning
2038 NIL whenever we can't get a truename, as was the case before 1.0.14.
2039 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2040 inherits from ERROR instead of just CONDITION.
2041 * new feature: SB-INTROSPECT can provide source locations for instances
2042 as well. (thanks to Tobias Rittweiler)
2043 * optimization: binding special variables now generates smaller code
2044 on threaded platforms.
2045 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2046 and cases where no :TEST is given but the compiler can infer that
2047 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2048 * optimization: better LOGNOT on fixnums.
2049 * optimization: modular arithmetic for a particular requested width
2050 is implemented using a tagged representation unless a better
2051 representation is available.
2052 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2053 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2054 for wellformedness and returns a specialized vector. (reported by
2055 Francois-Rene Rideau)
2056 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2057 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2058 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2059 unscheduling timer at the same time as another timer fires.
2060 * bug fix: don't reschedule timers for dead threads.
2061 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2062 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2063 bogus errors if select() was interrupted.
2064 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2066 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2067 * enhancement: cleaner backtraces for interactive interrupts, as
2068 well as other cases where the interesting frames used to be
2069 obscured by interrupt handling frames.
2070 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2071 now supported, and tracing a whole package using (TRACE "FOO") now
2072 traces SETF-functions as well.
2073 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2074 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2075 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2076 * unreadably printed representation of hash-tables now includes
2078 * bug fix: partially fixed #188: type propagation from assignments
2079 is now more efficient.
2080 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2081 'DOUBLE-FLOAT) are not flushable.
2082 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2083 full address of the object, and none of the tag bits.
2084 * bug fix: readably printing hash-tables now respects other printer
2085 control variables. (reported by Cedric St-Jean)
2086 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2087 keyword with MAKE-HASH-TABLE.
2088 * bug fix: export SB-POSIX:MKSTEMP.
2089 * bug fix: SORT was not interrupt safe.
2090 * bug fix: XREF accounts for the last node of each basic-block as
2092 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2093 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2094 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2095 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2096 create obsolete instances in the case of redefinition or
2097 obsoletion of a superclass. (thanks to Andy Hefner)
2098 * bug fix: Support for the Alpha architecture has been revived; it had
2099 suffered somewhat from lack of maintenance since sbcl-1.0.
2100 * improvements to the Windows port:
2101 ** The system detects the codepage to use at startup, instead of
2102 using the value from the saved core. (thanks to Kei Suzuki)
2104 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2105 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2106 (see documentation for details.)
2107 * revived support for OpenBSD (contributed by Josh Elsasser)
2108 * partially fixed bug #108: ROOM no longer suffers from occasional
2109 (AVER (SAP= CURRENT END)) failures.
2110 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2111 bodies no longer cause a WARNING to be signalled. (reported by
2113 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2114 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2115 the bug in TRUNCATE.) (reported by Michael Weber)
2116 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2117 no samples. (reported by Andy Hefner)
2118 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2119 no longer appear as (NIL ...) frames in backtraces.
2120 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2121 is now actually exported from SB-EXT as documented. (reported by
2123 * bug fix: sb-aclrepl now correctly understands how to inspect
2124 single-floats on 64-bit platforms where single-floats are not boxed.
2125 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2126 yet been finalized. (reported by Levente Meszaros)
2127 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2128 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2129 SBCL-specific optimize qualities.
2131 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2132 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2133 an executable in the search path, and does so in the child
2134 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2135 been removed; it can be found in the CVS history, for somebody who
2136 needs that search behavior (see the manual).
2137 * minor incompatible change: compiler policy re. weakening type
2138 checks has changed: now type checks are weakened only if SAFETY < 2
2140 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2141 unparsing of directory pathnames as files. Analogously,
2142 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2143 filename to parse into a directory pathname.
2144 * enhancement: implicit generic function creation now signals a
2145 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2146 users can bind handlers for and muffle around calls to LOAD.
2147 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2148 to be used (using the default stream external format), and allows
2149 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2150 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2151 strings and vectors whose element-type or simplicity is not fully
2152 known at compile-time.
2153 * optimization: STRING-TRIM and related functions no longer allocate
2154 a new string when no trimming needs to be performed. These functions
2155 are also faster than before when the input string has been declared
2157 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2158 * optimization: READ-LINE is significantly faster for files containing
2160 * optimization: non-open coded uses of character comparison operators
2161 (e.g. char=) no longer cons when called with more than one parameter
2162 on platforms supporting dynamic-extent allocation.
2163 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2164 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2165 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2167 * bug fix: some sequence functions elided bounds checking when
2169 * bug fix: too liberal weakening of union-type checks when SPEED >
2171 * bug fix: more bogus fixnum declarations in ROOM implementation
2174 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2175 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2176 :SYNCHRONIZED argument, which makes the hash-table safe for
2177 concurrent accesses (but not iteration.) See also:
2178 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2179 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2180 * optimization: CONCATENATE on strings is an order of magnitude faster
2181 in code compiled with (> SPEED SPACE).
2182 * optimization: SUBSEQ is ~50% faster on lists.
2183 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2184 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2185 END is smaller then START.
2186 * bug fix: SB-PROFILE will no longer report extra consing for nested
2187 calls to profiled functions.
2188 * bug fix: ROOM implementation had bogus fixnum declarations which
2189 could cause type-errors when calling ROOM on large images.
2190 * bug fix: if file compilation is aborted, the partial fasl is now
2191 deleted, and COMPILE-FILE returns NIL as the primary value.
2192 * bug fix: number of thread safety issues relating to SBCL's internal
2193 hash-table usage have been fixed.
2194 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2195 be returned from its body when the values were being returned
2196 using unknown-values return convection and the W-P-O was wrapped
2197 inside an UNWIND-PROTECT.
2198 * bug fix: sb-posix should now compile again under Windows, enabling
2199 slime to work again.
2201 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2202 * incompatible change: hash-table accessor functions are no longer
2203 automatically protected by locks. Concurrent accesses on the same hash-table
2204 from multiple threads can give inconsistent results or even corrupt the
2205 hash-table completely. Multi-threaded applications should do their own
2206 locking at the correct granularity. In the current implementation it is
2207 still safe to have multiple readers access the same table, but it's not
2208 guaranteed that this property will be maintained in future releases.
2209 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2210 and will signal an error at runtime.
2211 * enhancement: SB-THREAD package now exports a semaphore interface.
2212 * enhancement: CONS can now stack-allocate on x86 and
2213 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2215 * enhancement: nested lists can now be stack allocated on
2216 platforms providing stack allocation support.
2217 * enhancement: dynamic-extent support has been extended to support
2218 cases where there are multiple possible sources for the stack
2220 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2221 if the mutex is uncontested on Linux.
2222 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2223 as specified by the CLHS. (thanks to Tobias Rittweiler)
2224 * bug fix: NaN comparison now works on x86-64.
2225 * bug fix: CLOSE :ABORT T on a stream with pending output now
2227 * bug fix: instances of non-standard metaclasses using standard
2228 instance structure protocol sometimes missed the slot type checks
2230 * bug fix: known functions can be inlined in high-debug code.
2232 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2233 * minor incompatible change: the MSI installer on Windows no longer
2234 associates .lisp and .fasl files with the installed SBCL.
2235 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2236 on Windows. (thanks to Luis Oliviera)
2237 * new feature: SB-CLTL2 contrib module now implements
2238 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2239 * optimization: scavenging weak pointers is now more efficient,
2240 requiring O(1) instead of O(N) per weak pointer to identify
2241 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2242 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2243 method bodies using constant slot-names when the first argument is
2244 a specializer parameter for the method.
2245 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2246 names, when the class of the instance is a direct instance
2247 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2248 as slow as the constant slot-name case.)
2249 * optimization: member type construction is now O(N) instead
2251 * optimization: UNION and NUNION are now O(N+M) for large
2252 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2254 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2255 now more readable in environments like Slime which display it.
2256 (thanks to Tobias C. Rittweiler)
2257 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2258 was able to infer the correct argument type for the object on which
2259 the CAS operation was being performed.
2260 * bug fix: copy propagation interfered with parallel assignment
2261 semantics in local calls. (reported by Paul Khuong)
2262 * bug fix: the signed modular fixnum shift compiled to wrong code on
2263 x86 and x86-64. (spotted by a slight modification to some of
2266 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2267 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2268 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2269 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2271 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2272 and generic function now print the object identity for anonymous
2273 instances. (thanks to Attila Lendvai)
2274 * enhancement: as an extension to MOP, SBCL now supports SETF of
2275 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2276 (thanks to Attila Lendvai)
2277 * enhancement: sb-cover has an alternate annotation mode which puts
2278 the form annotations at the car of the form, instead of annotating
2279 it completely. The benefit of this mode is that it shows better
2280 which forms were instrumented by the compiler.
2281 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2282 by printer control variables. (reported by Dan Corkill)
2283 * bug fix: system leaked memory when delayed output was performed by
2284 the OS in smaller chunks then expected. (thanks to David Smith)
2285 * bug fix: system leaked memory when file streams were not closed
2287 * bug fix: large objects written to slow streams that were modified
2288 after the write could end up with the modified state written to
2289 the underlying file descriptor.
2290 * bug fix: multiple threads operating in parallel on the same stream
2291 could cause buffer-overflows.
2292 * bug fix: source location information is stored correctly
2293 (broken since 1.0.6). This bug would generally show up as the
2294 Slime debugger highlighting the wrong form when the sldb-show-source
2296 * bug fix: Branch forms are again annotated as branches in the sb-cover
2298 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2299 on x86-64. (reported by Gregory Vanuxem)
2300 * bug fix: EQUALP could return wrong results for structures with raw
2301 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2302 word). (reported by Vjacheslav Fyodorov)
2303 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2306 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2307 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2308 atomic compare-and-swap operations on threaded platforms.
2309 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2310 allows assigning a global minimum value to optimization qualities
2311 (overriding proclamations and declarations).
2312 * enhancement: closed over variables can be stack-allocated on x86
2314 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2316 * optimization: slot definition lookup is now O(1). This speeds up
2317 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2318 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2319 * optimization: ASSOC and MEMBER can now be open-coded for all
2320 combinations of keyword arguments when second argument is constant
2321 and SPEED >= SPACE. In other cases a specialized version is
2323 * bug fix: using obsoleted structure instances with TYPEP and
2324 generic functions now signals a sensible error.
2325 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2326 (reported by Kristoffer Kvello)
2327 * bug fix: backtrace construction is now more careful when making
2328 lisp-objects from pointers on the stack, to avoid creating bogus
2329 objects that can be seen by the GC.
2330 * bug fix: defaulting of values in contexts expecting more than 7
2331 variables now works on x86-64. (reported by Christopher Laux)
2332 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2334 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2335 as the property-list of a symbol.
2336 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2337 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2338 situations requested, are once again file-compileable. (reported
2341 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2342 * MOP improvement: support for user-defined subclasses of
2343 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2344 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2345 the expansion of DEFMETHOD, is responsible for generating a form
2346 which creates a list of specializers when evaluated. Additional
2347 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2348 debugging and introspective support.
2349 * minor incompatible change: the (unsupported) spinlock interface
2350 has changed: free spinlock now has the value NIL, and a held spinlock
2351 has the owning thread as its value.
2352 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2353 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2355 * enhancement: name of a socket-stream is now "a socket" instead of
2356 "a constant string".
2357 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2358 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2359 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2360 for generic functions. (Thanks to Tobias C. Rittweiler)
2361 * optimization: bignum printing speed has been improved by 20-40%
2362 (depending on the bignum size.)
2363 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2365 * bug fix: the cache used by the CLOS to store precomputed effective
2366 methods, slot offsets, and constant return values is now thread and
2368 * bug fix: generic function dispatch function updating is now thread
2369 and interrupt safe (in the sense that the known issues have been
2371 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2372 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2373 * bug fix: asdf systems with dependencies to the SB-POSIX or
2374 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2375 * bug fix: interrupt safety of applicable method computation has been
2378 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2379 * new contrib: sb-cover, an experimental code coverage tool, is included
2380 as a contrib module.
2381 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2382 significantly faster.
2383 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2384 produce more efficient code on x86-64 if the compiler can determine
2385 that (+ INDEX <constant>) does not require a bounds check and FOO
2386 has an element type at least 8 bits wide.
2387 * enhancement: a new, experimental synchronous timeout facility is
2388 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2389 * enhancement: when a symbol name conflict error arises, the
2390 conflicting symbols are always printed with a package prefix.
2391 (thanks to Kevin Reid)
2392 * enhancement: stepping is now once again supported on the SPARC and
2393 MIPS platforms. (It is also now more likely to work on CheneyGC
2395 * enhancement: sb-sprof can now also track and report accurate call
2397 * bug fixes: the treatment of non-standard subclasses of
2398 SB-MOP:SPECIALIZER is more correct.
2399 * incompatible change: PURIFY no longer copies the data from the
2400 dynamic space into the static and read-only spaces on platforms
2401 that use the generational garbage collector
2402 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2404 * bug fix: GC race condition occasionally resulting in crashes with
2405 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2407 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2409 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2410 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2411 * bug fix: an asynchronous interrupt could previously leave the
2412 system running with GC inhibited.
2413 * bug fix: a DECLARE form evaluated at top-level now causes an error
2414 rather than silently (or verbosely) returning NIL.
2415 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2416 result in a error being signalled due to source form lookup errors.
2417 (reported by Peter Graves)
2419 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2420 * incompatible change: removed writer methods for host-ent-name,
2421 host-ent-addresses -- changing the values did not update the DNS
2423 * minor incompatible change: changed experimental JOIN-THREAD interface
2424 * documentation: the manual now lists reader and writer methods
2425 in class slot documentation sections. (thanks to Richard M Kreuter)
2426 * documentation: unwinding from asyncronous events has been
2427 documented as unsafe.
2428 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2429 in multithreaded application code.
2430 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2431 platforms. (thanks to James Anderson for the optimization hint)
2432 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2434 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2435 variants no longer cons.
2436 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2437 their NOT- variants no longer cons.
2438 * optimization: EQUAL hash tables no longer use SXHASH for objects
2439 of all data types, but instead use an EQL hash for types for which
2440 EQUAL is the same as EQL.
2441 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2442 are significantly faster.
2443 * optimization: new STRING-OUTPUT-STREAM implementation is much
2444 faster for large outputs and conses 30% less on average.
2445 * enhancement: XREF information is now collected for references made
2446 to global variables using SYMBOL-VALUE and a constant argument.
2447 * enhancement: SIGINT now causes a specific condition
2448 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2449 * bug fix: FILE-POSITION used to signal an error in some cases where
2450 ANSI requires it to return NIL.
2451 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2452 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2453 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2455 * bug fix: bad type declaration in the CLOS implementation has
2456 been fixed. (reported by James Anderson)
2457 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2458 (thanks to Lutz Euler)
2459 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2460 required by the CLHS. (reported by Samium Gromoff)
2461 * bug fix: dead unbound variable references now signal an error.
2462 (reported by Marco Monteiro)
2463 * bug fix: / with an unused value was being deleted in safe code.
2464 (thanks to Marco Monteiro and Kevin Reid)
2465 * bug fix: number of characters that can be written onto a single
2466 line in a file is unlimited.
2467 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2468 been fixed by inhibiting interrupts for when GC is disabled.
2469 * bug fix: some interrupt safety issues with GETHASH, (SETF
2470 GETHASH), CLRHASH and REMHASH have been fixed.
2471 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2472 specifier no longer causes infinite recursion.
2473 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2474 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2475 * bug fix: an &environment argument with the correct variable information
2476 is passed to macros that are expanded during byte compilation.
2477 (reported by Samium Gromoff)
2478 * bug fix: a logic error was causing the hash function for bignums to
2479 have excessive amounts of collisions. (reported by Faré Rideau)
2480 * bug fix: modifying the contents of an array could change the return
2481 value of SXHASH on that array, which is only allowed for strings
2482 and bit vectors. (bug introduced in 0.9.16)
2483 * improvement: the x86-64/darwin port now passes all tests (except
2484 for the debugger tests) but should still be considered
2485 experimental until this is fixed.
2486 * improvement: a style-warning is signaled for CASE (etc) clauses with
2487 duplicate keys. (thanks to Kevin Reid)
2488 * improvement: macos/x86 and macos/x86-64 now use mach exception
2489 handlers for dealing with illegal instructions (for trapping and
2490 error handling) and memory protection violations (for GC).
2492 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2493 * new platform: experimental support for x86-64/darwin (MacOS).
2494 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2495 and getnameinfo sockets functions are used instead of gethostbyaddr
2496 and gethostbyname, on platforms where the newer functions are available.
2497 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2499 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2500 don't print the startup banner, but behave as if --noinform was passed
2501 as a command line argument. (thanks to Kevin Reid)
2502 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2503 * optimization: code using alien values with undeclared types is much faster.
2504 * optimization: the compiler is now able to open code SEARCH in more cases.
2505 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2506 * bug fix: using standardized COMMON-LISP special variables as loop
2507 variables no longer signals bogus package lock violations. (reported
2509 * bug fix: declaring local loop variables to be of a range-limited type
2510 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2511 (reported by Andras Simon)
2512 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2513 bugs remain on x86-64.)
2514 * bug fix: the #= and ## reader macros now interact reasonably with
2515 funcallable instances.
2516 * bug fix: type-checks for function arguments were compiled using the
2517 compiler policy settings of the wrong lexical environment (in 1.0.2
2519 * bug fix: SHADOW accepts characters as string designators, as required
2520 by the spec (thanks to Eric Marsden)
2521 * bug fix: fixed GC safety issues when foreign functions are called with
2522 non-base strings as arguments
2523 * bug fix: more consistent error output for fatal-compiler-warnings, like
2525 * bug fix: functions with proper names were showing up as NIL in
2526 backtraces (reported by Edi Weitz, regression in 1.0.2)
2528 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2529 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2530 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2531 produce more efficient code on the x86 if the compiler can determine
2532 that (+ INDEX <constant>) does not require a bounds check and FOO
2533 has an element type at least 8 bits wide.
2534 * bug fix: references to undefined variables are handled the same way
2535 in toplevel forms as in the normal compiler
2536 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2538 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2539 (thanks to Jon Buller)
2540 * improvement: faster compilation times for complex functions
2541 * improvement: added readlink support to SB-POSIX (thanks to Richard
2544 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2545 * improvement: experimental support for mach exception handling on
2546 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2548 * improvement: support for GBK external format.
2549 (thanks to Chun Tian (binghe))
2550 * improvement: the debugger now displays variables that have been closed
2551 over, in code compiled with (DEBUG 2) or higher
2552 * improvement: support for executable cores on NetBSD (thanks to
2554 * new feature: added a RESTART-FRAME debugger command
2555 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2556 be used to provide an implementation for FILE-POSITION on Gray streams
2557 (thanks to Eric Marsden)
2558 * new feature: add syslog, openlog and closelog support to SB-POSIX
2559 (thanks to Richard Kreuter)
2560 * optimization: the function call overhead in code compiled with
2561 a high DEBUG optimization setting is significantly
2562 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2563 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2564 (thanks to Tony Martinez)
2565 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2566 evaluated once (reported by Kevin Reid)
2567 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2568 works again (thanks to Kilian Sprotte)
2569 * bug fix: an error is signaled for tagbodies with duplicate tags
2570 (thanks to Stephen Wilson)
2571 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2572 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2573 stack frames from alien callbacks.
2574 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2575 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2576 65k pages (thanks to David Woodhouse)
2577 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2579 changes in sbcl-1.0.1 relative to sbcl-1.0:
2580 * new platform: FreeBSD/x86-64, including support for threading.
2581 * new feature: the compiler stores cross-referencing information
2582 about function calls (who-calls), macroexpansion (who-macroexpands)
2583 and special variables (who-binds, who-sets, who-references) for code
2584 compiled with (< SPACE 3). This information is available through the
2585 sb-introspect contrib.
2586 * new feature: users may subclass SEQUENCE, and have instances of
2587 these classes interoperate with standard Common Lisp functions if
2588 a number of methods are defined. (This feature is experimental
2589 and the interface subject to change based on feedback from SBCL
2590 users and the general community)
2591 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2592 x86/x86-64, rather than the previous fixed depth of 8
2593 * improvement: another pthread back-end of mutex "pthread-futex".
2594 * bug fix: non-ascii command-line arguments are processed correctly
2595 (thanks to Yaroslav Kavenchuk)
2596 * bug fix: non-required arguments were not passed correctly when a method
2597 defined using DEFMETHOD was called from a mop-generated method using
2598 CALL-NEXT-METHOD (reported by Pascal Costanza)
2599 * bug fix: recursion is now permitted in accessors through
2600 SLOT-UNBOUND. (reported by Pascal Costanza)
2601 * bug fix: an error was signaled at startup if the HOME environment
2602 variable was defined, but had an empty value (reported by Peter Van Eynde)
2603 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2604 signal a PROGRAM-ERROR, not a BUG.
2605 * bug fix: SB-POSIX:READDIR works when built with large file support.
2606 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2608 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2609 for better automatic indentation support. (thanks to Matt Pillsbury)
2610 * optimization: loading generic functions no longer takes O(n^2) time,
2611 proportional to the amount of methods in the generic function
2612 (reported by Todd Sabin and Jeremy Brown)
2613 * optimization: the FIND and POSITION family of sequence functions
2614 are significantly faster on arrays whose element types have been
2616 * improvements to the Windows port:
2617 ** Intermittent heap corruption problems have been fixed. (thanks
2618 to Alastair Bridgewater)
2619 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2621 ** Lisp is able to unwind foreign exception frames from alien
2622 callbacks. (thanks to Alastair Bridgewater)
2624 changes in sbcl-1.0 relative to sbcl-0.9.18:
2625 * improvement: experimental support for threading on FreeBSD/x86.
2626 (thanks to NIIMI Satoshi)
2627 * improvement: runtime option --dynamic-space-size can be used
2628 to set the size of the dynamic space reserved on startup.
2629 * improvement: floating point modes in effect are now saved in
2630 core, and restored on startup.
2631 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2632 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2633 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2634 threads are not running after *SAVE-HOOKS* have run.
2635 * improvement: writes to CLOS instance slots are type-checked in code
2636 compiled with (SAFETY 3)
2637 * improvement: floating-point exception handling on FreeBSD (thanks to
2639 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2640 (thanks to Zach Beane)
2641 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2643 * improvement: added support for the Shift-JIS external format.
2644 (contributed by NIIMI Satoshi)
2645 * improvement: callbacks are supported on Linux/PPC. (thanks to
2647 * bug fix: compiler bug triggered by a (non-standard) VALUES
2648 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2649 * bug fix: file compiler no longer confuses validated and already
2650 dumped structurres. (reported by Kaersten Poeck)
2651 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2652 fill-pointer signals a type-error as required. (thanks to
2654 * bug fix: disassemly of funcallable instances works.
2655 * bug fix: single stepping on PPC.
2656 * bug fix: fix thread-safety problems in the type system (generally
2657 manifesting as nonsensical errors like "STRING is a bad type specifier
2658 for sequences" or "The value 1 is not of type FIXNUM")
2659 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2660 (reported by Josip Gracin)
2661 * bug fix: an error is signaled for attempts to displace arrays with
2662 incompatible element types (thanks to Mario Mommer)
2663 * bug fix: more correct handling of wide characters in debug info
2664 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2665 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2666 and don't cause extra consing
2667 * optimization: MAP and MAP-INTO are significantly faster on vectors
2668 whose elements types have been declared.
2669 * Improvements to SB-SPROF:
2670 ** Support for allocation profiling
2671 ** Reduced profiling overhead, especially for long profiling runs
2672 * Improvements to the Windows port:
2673 ** floating point exceptions are now reported correctly.
2674 ** stack exhaustion detection works partially.
2675 ** more accurate GET-INTERNAL-REAL-TIME.
2676 ** better RUN-PROGRAM behaviour in case of errors in the child
2678 ** PROBE-FILE now simplifies pathnames correctly.
2679 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2680 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2681 1st 1970 (although time timezone data will be unreliable).
2682 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2684 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2685 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2686 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2688 * bug fix: two potential GC deadlocks affecting threaded builds.
2689 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2690 returns T (reported by Anton Kazennikov)
2691 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2692 with non-variable places
2693 * bug fix: remove a race condition in the setting of
2694 funcallable-instance functions, this should make threaded CLOS
2695 code more stable against memory faults.
2696 * bug fix: corruption of specials when unbinding is interrupted by an
2697 asynchronous unwind (reported by Hannu Koivisto)
2698 * improvement: the debugger will now also display local variables that
2699 are only used once, for code compiled with a DEBUG optimization quality
2702 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2703 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2704 * incompatible change: External-format support for FFI calls. The
2705 SB-ALIEN:C-STRING no longer implies an ASCII
2706 external-format. Instead the string is subject to external-format
2707 conversion. Additionally return values of type SB-ALIEN:C-STRING
2708 are by default of type (SIMPLE-ARRAY CHARACTER), not
2709 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2710 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2711 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2712 * incompatible change: SB-EXT package no longer contains the
2713 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2714 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2716 * incompatible change: the single-stepper is no longer available
2717 on Alpha, Mips and Sparc platforms.
2718 * minor incompatible change: the direct superclasses of
2719 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2720 not (STANDARD-OBJECT FUNCTION). This makes the
2721 class-precedence-lists of GENERIC-FUNCTION and
2722 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2724 * minor incompatible change: the default stream external format on
2725 non-unicode SBCL is no longer detected from the locale, but is always
2727 * new feature: Add a version of evaluator that uses an interpreter instead
2728 of the compiler. EVAL still uses the compiler by default, to switch it
2729 to use the interpreter, set the value of the variable
2730 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2731 * minor incompatible change: the single-stepper REPL has been merged
2732 with the normal debugger (see the "Stepping" heading of the debugger help
2733 for more details). The debugger command STEP will no longer switch
2734 to the single-stepper REPL.
2735 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2736 for a type now works.
2737 * bug fix: loading of default sysinit file works. (thanks to Leonid
2739 * bug fix: better detection of circularities in the file-compiler.
2740 (reported by Marco Monteiro)
2741 * bug fix: the CL pathname functions now work with files that have
2742 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2743 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2744 systems with Unix98 pty semantics.
2745 * bug fix: ASDF-INSTALL will now work with bsd tar.
2746 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2748 * bug fix: timers expiring in dead threads no longer cause a
2749 type-error (reported by Paul "Nonny Mouse").
2750 * bug fix: thanks to more lightweight single-stepper instrumentation,
2751 code compiled with (DEBUG 3) will compile and execute significantly faster,
2752 and will have more accurate type-inferencing than before
2753 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2754 whose bindings are modified
2755 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2756 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2757 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2758 CL:SOFTWARE-VERSION with proper version
2760 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2761 * feature: implemented the READER-METHOD-CLASS and
2762 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2763 as specified by AMOP.
2764 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2766 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2767 (thanks to Lutz Euler)
2768 * optimization: hashing of general arrays and vectors has been
2769 improved. (reported by Any Fingerhut)
2770 * enhancement: SB-INTROSPECT is now able to find definitions of
2771 profiled functions. (thanks to Troels Henriksen)
2772 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2773 as well, allowing compiler-macros for SETF-functions to expand.
2774 * enhancement: step-instrumentation no longer wraps known
2775 single-value functions with multiple-value context, allowing
2776 better type inference.
2777 * fixed bug #337: use of MAKE-METHOD in method combination now works
2778 even in the presence of user-defined method classes. (reported by
2779 Bruno Haible and Pascal Costanza)
2780 * fixed bug #339(c): if there are applicable methods not part of any
2781 long-form method-combination group, call INVALID-METHOD-ERROR.
2782 (reported by Bruno Haible)
2783 * fixed bug #361: the :FUNCTION initarg in the protocol for
2784 initialization of methods can now be used to override
2785 internally-produced optimized functions. (reported by Bruno
2787 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2788 system-provided lambda expression no longer cause warnings about
2789 unbound #:|pv-table| symbols.
2790 * bug fix: improved the handling of type declarations and the
2791 detection of violations for keyword arguments with non-constant
2793 * bug fix: potentially erronous calls to PATHNAME and
2794 MERGE-PATHNAMES were being flushed in some cases.
2795 (reported by Richard Kreuter)
2796 * bug fix: compiled calls to TYPEP were mishandling obsolete
2797 instances. (reported by James Bielman and Attila Lendvai)
2798 * bug fix: format strings with ~> without matching ~< no longer
2799 trigger an AVER, but signal an understandable error instead.
2800 (reported by Antonio Martinez)
2801 * bug fix: specifying an output-file without a pathname-type for
2802 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2803 of input-file instead of "fasl". (reported by Robert Dodier)
2804 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2805 (reported by James Y Knight).
2806 * bug fix: compiler-macros-function did not consider the environment
2807 argument for shadowing by local functions.
2808 * bug fix: compiler-macros expansion was inhibited by local INLINE
2810 * bug fix: inline expansions of known functions were subject to
2811 step-instrumentation in high debug policies, leading to problems
2812 with type-inference.
2813 * bug fix: compiler failed to differentiate between different CONS
2814 types in some cases.
2815 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2816 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2817 * bug fix: #368: incorrect use of expressed vs. upgraded array
2819 * bug fix: #306a: more precise unions of array types.
2820 * thread-safety improvements:
2821 ** CONDITION-WAIT could return early on Linux, if the thread was
2822 interrupted and subsequently continued with SIGCONT.
2823 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2825 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2826 * added support for the ucs-2 external format. (contributed by Ivan
2828 * minor incompatible change: pretty printing of objects of type
2829 (cons symbol) is, in the default pprint-dispatch-table, now
2830 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2832 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2833 called later in a class's lifetime, possibly as late as when the
2834 first instance of the class is created. Previously,
2835 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2836 class became finalizeable.
2837 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2838 for multibyte external-format streams. (thanks to "vbzoli")
2839 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2840 with :ALLOCATION :CLASS inherited from superclasses of the
2842 * fixed bug: anonymous classes can now be created using the :NAME
2843 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2844 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2845 * fixed bug: core-files saved with :EXECUTABLE T can again be
2846 executed when SBCL_HOME isn't set. (reported by James Knight)
2847 * fixed bug: toplevel LOCALLY forms with declarations could
2848 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2849 * fixed bug: printing from several different threads using different
2850 values of *print-case* could cause invalid output, due to
2851 some internal special variables of the printer not being bound
2852 thread-locally (reported by Max Mikhanosha)
2853 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2854 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2855 (reported by Pascal Costanza)
2856 * fixed bug: FINALIZE-INHERITANCE is called from
2857 REINITIALIZE-INSTANCE on classes when the class has previously
2858 been finalized, as required by AMOP.
2859 * minor code generation optimizations:
2860 ** better register allocation in CLOS dispatching functions
2861 ** overflow detection when coercing signed bytes to fixnums on x86-64
2862 ** is now implemented with one IMUL instruction instead of three shifts
2863 ** more efficient bit-vector access on x86 and x86-64
2864 ** more efficient access to raw structure slots on x86 and x86-64
2865 * fixed some bugs revealed by Paul Dietz' test suite:
2866 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2867 return its argument.
2869 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2870 * feature: thread support on Solaris/x86, and experimental thread support
2872 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2874 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2875 default method for SLOT-UNBOUND.
2876 * minor incompatible change: prevent the user from specializing the
2877 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2878 somewhat counter to the intent of the protocol, I (CSR) think, and
2879 additionally it just doesn't work in SBCL as currently
2880 implemented, thanks to optimizations (that are always valid for
2881 the other three SLOT-VALUEish functions, but not for the setter).
2882 * minor incompatible change: the :SB-LDB feature is now enabled by
2883 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2884 the low-level debugger.
2885 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2886 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2887 down to an SB-SYS:FD-STREAM, allowing direct communication in
2888 more cases. Temporary files and pipes are still used as a fallback
2890 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2891 on the non-reentrant C functions localtime(3) and gmtime(3).
2892 * bug fix: global optimization policy was not visible in LOCALLY and
2894 * bug fix: class objects can be used as specializers in methods.
2895 (reported by Pascal Costanza)
2896 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2897 with a type error. (reported by blitz_ on #lisp)
2898 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2899 failed with a type error. (reported by Pascal Bourguignon)
2900 * bug fix: merging pathnames against defaults with :DIRECTORY
2901 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2902 (reported by James Y Knight)
2903 * bug fix: saving large (>2GB) cores on x86-64 now works
2904 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2905 constant index and a (simple-array (signed-byte 32)) array
2906 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2907 error (patch by Robert J. Macomber)
2908 * feature: TIME now displays the amount of run-time spent in GC
2909 * bug fix: The debugger now does a better job of respecting
2910 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2911 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2912 workaround for bug 403.)
2913 * bug fix: floating point exception handling now works on FreeBSD
2914 (thanks to NIIMI Satoshi)
2915 * fixed some bugs revealed by Paul Dietz' test suite:
2916 ** MISC.641: LET-conversion were not supposed to work in late
2918 * improvements to the Win32/x86 port:
2919 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2920 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2922 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2923 * new feature: source path information is generated for macro-expansion
2924 errors for use in IDE's like Slime (thanks to Helmut Eller)
2925 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2926 * bug fix: compiler does not loop forever on an invalid type in
2928 * improvement: compilation of most CLOS applications is significantly
2930 * optimization: added a limited bytecode compiler for simple toplevel
2931 forms, speeding up compilation and FASL loading
2932 * bug fix: the statistical profiler now properly distinguishes anonymous
2935 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2936 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2937 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2938 into subclasses of the finalized class. Now user calls to
2939 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2940 system return before any subclasses are finalized.
2941 * minor incompatible change: The reader no longer ignores errors
2942 regarding non-existent packages in #+ and #- feature tests.
2943 * new feature: command line options --no-sysinit, --no-userinit to
2944 inhibit loading the corresponding init files
2945 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2946 for sending data through UDP sockets (thanks to François-René Rideau)
2947 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2948 error is signalled instead (thanks to François-René Rideau)
2949 * minor incompatible change: Error signalling behaviour of lexical
2950 operations violating package locks has changed slightly. Refer to
2951 documentation on package locks for details.
2952 * enhancement: EVAL can process IF-expressions without resorting to the
2954 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2955 constant-folded properly due to missing out-of-line functions.
2956 (reported by Mika Pihlajamäki)
2957 * bug fix: LISTEN sometimes returned T even in cases where no data was
2958 immediately available from the stream
2959 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2960 were reversed. (reported by Levente Mészáros)
2961 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2962 when given a vector displaced to an adjustable array. (reported
2964 * bug fix: derivation of float boundaries from numbers outside the
2965 appropriate float range (reported by John Wiseman)
2966 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2968 * bug fix: precomputing cache entries for generic functions with
2969 some subclasses of specializers as yet invalid does not attempt to
2970 fill a cache line with a negative offset. (reported by Levente
2972 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2973 allow condition class objects as arguments to DOCUMENTATION and
2974 (SETF DOCUMENTATION); only find and set documentation for
2975 structure names for the STRUCTURE doc-type. (suggested by Gary
2977 * improvements to the Win32/x86 port:
2978 ** (user-homedir-pathname) and default initialization file
2979 locations now know about the user's "Documents and Settings"
2980 directory (thanks to Yaroslav Kavenchuk)
2981 ** run-program is implemented (thanks to Mike Thomas)
2982 ** sockets support (thanks to Timothy Ritchey)
2983 ** better backtrace support (thanks to Alastair Bridgewater)
2984 ** sb-grovel supported
2985 ** asdf-install and sb-posix work somewhat
2986 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2987 * improvements to the Solaris/x86 port:
2988 ** works on Solaris 11/Solaris Express
2989 ** floating-point exception handling support
2990 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2991 * fixed some bugs revealed by Paul Dietz' test suite:
2992 ** REMOVE-METHOD returns its generic function argument even when
2993 the method is not one of the generic functions' methods.
2994 ** objects declared as MEMBER types can be admissible arguments to
2995 structure accessors.
2996 ** printing characters should simply be printed by the FORMAT ~:C
2998 ** compiler failure when compiling functions with hairy constant
2999 defaults for optional parameters.
3000 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3001 function, which is already optimized.
3003 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3004 * new platform: experimental support for SBCL x86/Darwin, including
3005 MacOS X 10.4.5 on Intel.
3006 * new feature: Unicode character names are now known to the system
3007 (through CHAR-NAME and NAME-CHAR).
3008 * new feature: the filesystem location of SBCL's core file is
3009 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3010 * minor incompatible change: the contrib modules SB-POSIX and
3011 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3012 this change is to make it easier to distribute
3013 location-independent binaries.
3014 * bug fix: as implied by AMOP, standardized classes no longer have
3015 slots named by external symbols of public packages. (reported by
3017 * optimization: calling functions via constant symbols -- as in
3018 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3019 via the function object as in (FUNCALL #'FOO).
3020 * optimization: on x86 and x86-64, the calling convention for the
3021 case of dealing with an unknown number of values has been altered
3022 to be friendlier to the prediction heuristics implemented,
3023 particularly with reference to CALL and RET pairing. (thanks to
3024 Alastair Bridgewater)
3025 * optimization: on x86, the code for access to thread-local symbol
3026 values and binding/unbinding of thread-local symbols is smaller.
3027 (thanks to Alastair Bridgewater)
3028 * enhancement: CONSTANTP is now able to determine constantness of
3029 more complex forms, including calls to constant-foldable standardized
3030 functions and some special forms beyond QUOTE.
3031 * fixed bug: occasional GC crashes on Solaris/x86
3032 * optimization: x86-64 supports stack allocation of results of simple
3033 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3034 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3035 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3036 (thanks to James Knight)
3037 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3038 by the standard (thanks to Stephen Compall)
3040 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3041 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3042 be used for bundling the runtime and the core file into one
3043 executable binary. This feature is not currently supported on all SBCL
3044 platforms. (thanks to James Bielman and NIIMI Satoshi)
3045 * new feature: a generational or ephemeral garbage collector is now
3046 the default on the PowerPC platform (both Linux and Darwin). The
3047 old Cheney (stop and copy) collector is a build-time option.
3048 (thanks to Cyrus Harmon, after Raymond Toy)
3049 * minor incompatible change: the method by which SBCL finds its
3050 contributed modules has changed; it no longer relies on symbolic
3051 links from an $SBCL_HOME/systems directory, but searches directly
3052 in the subdirectories of $SBCL_HOME.
3053 * enhancement: the dynamic heap size on the Linux/PPC platform is
3054 markedly larger, even using the older Cheney garbage collector.
3055 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3056 certain complicated string types. (reported by Gary King)
3057 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3058 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3059 * fixed bug: DOCUMENTATION on structures no longer signals an
3060 error if no structure type of the right name exists. (reported by
3062 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3063 applicable non-standard primary or :AROUND method on
3064 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3065 no longer cause unbound variable errors. (reported by Kevin Reid)
3066 * fixed bug: metacircle resolution in cases where methods have slots
3067 added before the slots from STANDARD-METHOD. (reported by Jean
3069 * fixed bug: the Power PC assembly code for calling into lisp
3070 sometimes computed its return address wrongly (depending on the
3071 15th bit of the address, fixed at link time). This used to
3072 manifest itself in a segmentation violation while building PCL.
3073 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3074 many others over the years)
3075 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3076 the stack pointer (treated as a signed integer) is negative.
3077 (thanks to Peter van Eynde)
3079 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3080 * new platform: experimental support for the Windows operating
3081 system has been added. (thanks to Alastair Bridgewater)
3082 * fixed several bugs in and robustified the PPC FFI (including
3083 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3084 * bug fix: allow non-simple string symbol names (reported by Paul
3086 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3088 * bug fix: saving a core corrupted callbacks on x86/x86-64
3089 * bug fix: closed a loophole in metacircularity detection and
3090 grounding in the PCL implementation of CLOS.
3091 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3092 (reported by tomppa on #lisp)
3093 * bug fix: clear the direction flag on Lisp -> C transitions, as
3094 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3095 (reported by Andrej Grozin and Hendrik Maryns)
3096 * optimization: major improvements to GC efficiency on GENCGC platforms
3097 * optimization: faster implementation of EQUAL
3098 * optimization: emit more efficient opcodes for some common
3099 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3100 * optimization: several other minor code-generation improvements on x86-64
3101 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3103 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3104 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3105 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3106 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3107 by ANSI as a generic function, and for consistency (SETF
3108 GENERIC-FUNCTION-NAME) is treated likewise.
3109 * fixed bug #233.b: make constraint propagation notice when a variable
3110 value is changed after it is referenced but before it is used
3111 * fixed bug #296: no more arbitrary behaviour from filenames with
3112 odd characters as --load arguments. (reported by Adam Warner)
3113 * fixed bug #390: :CHARACTER-SET pathname components now work as
3114 expected. (reported by Tim Daly Jr)
3115 * fixed bug #391: complicated :TYPE intersections in slot
3116 definitions no longer cause an error in PCL internals.
3117 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3118 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3119 returning the number of octets which would be written to the
3120 file-stream. (thanks to Robert J. Macomber)
3121 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3122 arguments to the internal stream functions. (thanks to David
3124 * bug fix: stack exhaustion is now handled on the x86/SunOS
3125 platform. (thanks to Daisuke Homma)
3126 * bug fix: more accurate ROOM results on GENCGC platforms
3127 * optimization: improved type inference for arithmetic-for
3128 index variables in LOOP
3129 * optimization: faster floating-point SQRT on x86-64
3130 * fixed some bugs revealed by Paul Dietz' test suite:
3131 ** DOCUMENTATION returns NIL instead of "" for method combinations
3132 that don't have a docstring
3134 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3135 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3136 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3137 therefore are not customizeable by user code (as seems to be at
3138 least permitted and maybe required by AMOP). As a consolation,
3139 however, the SBCL implementation of these functions now calls
3140 REINITIALIZE-INSTANCE as specified by AMOP.
3141 * bug fix: slot-definition documentation is propagated as per ANSI
3142 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3143 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3144 argument, as do eslotd initialization methods. (from Pascal
3145 Costanza's "Closer" project)
3146 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3147 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3149 * bug fix: it is now possible to have more than one subclass of
3150 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3151 (reported by Bruno Haible, Pascal Costanza and others)
3152 * bug fix: the dependent update protocol now works for generic
3153 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3154 and Pascal Costanza)
3155 * bug fix: condition-class instances corresponding to
3156 DEFINE-CONDITION forms are now created eagerly. (reported by
3157 Kalle Olavi Niemitalo on comp.lang.lisp)
3158 * bug fix: floating point printing is more accurate in some
3159 circumstances. (thanks to Simon Alexander)
3160 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3161 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3162 * bug fix: callbacks on OS X now preserve stack-alignment.
3163 (thanks to Cyrus Harmon)
3164 * enhancement: the x86-64 disassembler is much better at
3165 disassembling SSE instructions. (thanks to Lutz Euler)
3166 * enhancement: CHECK-TYPE on a variable now allows type-inference
3167 (thanks to Vincent Arkesteijn)
3168 * optimization: improved performance of EUC-JP external format.
3169 (thanks to NIIMI Satoshi)
3170 * optimization: performance improvements to IO on file streams of
3171 :ELEMENT-TYPE CHARACTER
3172 * optimization: much faster memory allocation on x86-64
3173 * optimization: faster garbage collections (latency and throughput)
3175 * optimization: faster bignum subtraction and division on x86 and x86-64
3176 (thanks to Lutz Euler)
3177 * optimization: more accurate type-inference for loops that use a
3178 floating point index variable or a negative step.
3180 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3181 * bug fix: add a workaround to SBCL looping infinitely at startup on
3182 Linux kernels with apparently buggy implementations of personality().
3183 (thanks to Svein Ove Aas)
3184 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3185 (thanks to David Lichteblau)
3186 * bug fix: local bindings shadow global symbol macros for
3187 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3188 * optimization: non-open coded uses of numeric comparison operators
3189 (e.g. >) no longer cons when called with more than one parameter
3190 on platforms supporting dynamic-extent allocation.
3191 * enhancement: saving cores with foreign code loaded is now supported
3192 on MIPS/Linux in addition to the previously supported platforms.
3193 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3194 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3195 * bug fix: division by zero in sb-sprof when no samples were collected
3196 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3197 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3198 (thanks to Alexander Kjeldaas)
3199 * new feature: ignoring the return values of destructive functions
3200 like NREVERSE signals a compile-time style-warning.
3201 (thanks to Kevin Reid)
3202 * new feature: the alignment of alien structure fields can be
3203 explicitly specified. (thanks to Cyrus Harmon)
3204 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3205 and dump core on SIGQUIT
3207 ** incompatible change: threads do not inherit values of specials
3208 from their parents (see manual)
3209 ** bug fix: threads stacks belonging to dead threads are freed by the
3210 next exiting thread, no need to gc to collect thread stacks anymore
3211 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3212 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3213 ** bug fix: dynamic variable and thread start related gc lossage
3214 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3216 * fixed some bugs revealed by Paul Dietz' test suite:
3217 ** SUBTYPEP is slightly more accurate on heinously complicated
3218 CONS types where some of the members have uncertain (in the
3219 NIL, NIL sense) type relationships to each other.
3221 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3222 no longer purified unless :PURIFY T is explicitly specified.
3223 ** Non-purified cores are significantly smaller than before
3225 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3226 * new feature: timers based on Zach Beane's excellent timer package
3227 * added support for the following external formats: koi8-u,
3228 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3229 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3230 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3231 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3232 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3233 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3234 * incompatible change: a threaded SBCL will no longer revert to
3235 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3236 * bug fix: interrupts are disabled until startup is complete; no
3237 more sigsegvs when receiving a signal to soon
3238 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3240 * bug fix: add a workaround for the memory randomization features in
3241 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3242 workaround will only be in effect on systems with the proc filesystem
3244 * bug fix: printing objects of type HASH-TABLE signals a
3245 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3247 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3248 have been running for over 50 days. (reported by Gilbert Baumann)
3249 * bug fix: the logic for getting names of functions gets less
3250 confused when confronded with alternate-metaclass
3251 funcallable-instances. (reported by Cyrus Harmon)
3252 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3253 consistent, even on internal alternate-metaclass objects.
3254 * bug fix: flush closure information collected by physical
3255 environment analysis prepass before the main pass. (bug reported
3257 * bug fix: compiler pack phase does not modify a hashtable, which is
3258 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3259 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3260 may be expanded. (reported by Alexander <malishev> on c.l.l)
3261 * bug fix: no more style-warnings when compiling code using LAST
3262 under high-SPEED low-SPACE settings. (reported by David Wallin
3264 * fixed some incompatibilities between SBCL's MOP and the MOP
3266 ** the METAOBJECT class is now implemented;
3267 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3268 STANDARD-OBJECT, as required;
3269 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3270 now compatible (as required by VALIDATE-SUPERCLASS); there
3271 remains a consistency requirement over the presence or absence
3272 of the FUNCTION class in the superclass list of finalized
3273 classes; see the manual for more details;
3274 ** the :AROUND method for COMPUTE-SLOTS on
3275 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3276 requested slot ordering.
3278 ** bug fix: parent thread now can be gc'ed even with a live
3280 ** bug fix: binding a special with PROGV to no value is not
3281 the same as that symbol not having been bound (thanks to
3283 ** bug fix: binding specials is thread safe (thanks to
3285 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3286 and SB-SPROF do not die with 'no handler for signal XX in
3287 interrupt_handle_now(..)' anymore
3288 ** bug fix: WITH-TIMEOUT works with multiple running threads
3289 * fixed some bugs revealed by Paul Dietz' test suite:
3290 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3291 the :method-class keyword argument.
3293 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3294 * new port: the Solaris operating system on x86 processors is now
3295 mostly supported, though some rough edges in the environment
3296 remain. (thanks to Daisuke Homma)
3297 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3298 space for its heap. (thanks to Thiemo Seufer)
3299 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3300 closures. (thanks to Thiemo Seufer)
3301 * minor incompatible change: eof selects abort in the debugger.
3302 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3303 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3305 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3306 deprecated, and will go away in a future revision of SBCL.
3307 * minor incompatible change: GC-ON and GC-OFF are no longer
3308 implemented with a counter, it does not matter how many times gc
3309 is switched on or off
3310 * bug fix: discriminating functions for generic function classes
3311 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3312 make invalid assumptions about method precedence order. (reported
3314 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3315 platforms. (thanks to Thiemo Seufer)
3316 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3317 * bug fix: correct pathname printing with printer escaping is on.
3318 (thanks to Kevin Reid)
3319 * bug fix: complex VOP definitions in "user-space" no longer trigger
3320 package locks. (reported by Zach Beane)
3321 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3322 for funcallable-instance functions, and is no different from
3324 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3325 characters in the current readtable. (reported by Nicholas Neuss)
3326 * bug fix: SUBTYPEP on various CONS types returns more a more
3327 accurate acknowledgment of its certainty.
3328 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3329 lists in some cases. This partially fixes bug 384.
3330 * flush all standard streams before prompting in the REPL and the
3332 * bug fix: signal handling and triggering gc do not conflict
3333 directly anymore, in particular a high frequency sb-sprof does
3334 not prevent gc from running
3335 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3336 approximation for timezone and DST information between the
3337 universal time epoch and the smallest negative 32-bit time_t.
3338 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3339 year 1899 so long as the encoded time is non-negative.
3340 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3341 the correct answer for non-constant rotate amounts when performing
3342 an inline 32-bit rotation.
3344 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3345 there is only one thread in the session
3346 ** bug fix: memory leak for streams created in one thread and
3347 written to in another
3348 ** bug fix: lockup when compiled with gcc4
3349 ** bug fix: race that allows the gc to be triggered when gc is
3351 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3352 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3354 ** bug fix: finished threads are gc'ed properly
3355 * fixed some bugs revealed by Paul Dietz' test suite:
3356 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3357 has arguments with a different set of applicable methods from
3358 the orignal arguments.
3359 ** The type error thrown by MAP now has a correct expected-type
3361 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3362 name a compiled function.
3363 ** Three MISC tests where a large bignum was improperly coerced to
3364 a float that couldn't represent that bignum during type
3365 derivation were fixed.
3366 ** SUBTYPEP can now handle types involving the negation of a
3367 list-form FUNCTION type.
3368 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3369 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3370 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3372 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3373 * New feature: Experimental support for bivalent streams: streams
3374 opened with :element-type :default now allow character and binary
3375 (unsigned-byte 8) I/O
3376 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3377 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3379 * bug fix: no more highly sporadic "couldn't check whether ~S is
3380 readable" when reading a stream and an interrupt hits in the middle
3381 of a select system call
3382 * compiler better recognizes complex arrays (reported by Eduardo
3384 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3385 for variables on SBCL built with linkage-tables. (reported by Luis
3387 * various error reporting improvements.
3388 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3389 (Thanks to Thiemo Seufer)
3390 * bug fix: nested reader invokations work correctly
3391 * bug fix: it is possible to have simultaneous references to foreign
3392 code and foreign data with the same name.
3394 ** added x86-64 support
3395 ** incompatible change: the threading api now works with thread
3396 objects instead of thread ids
3397 ** bug fix: threads are protected from signals and interruption when
3398 starting up or going down
3399 ** bug fix: a race where an exiting thread could lose its stack to gc
3400 ** bug fix: don't halt on infinite error in threads if possible
3401 ** fixed numerous gc deadlocks introduced in the pthread merge
3402 ** bug fix: fixed thread safety issues in read and print
3403 ** bug fix: debugger doesn't hang on session lock if interrupted at
3404 an inappropriate moment
3405 ** bug fix: run-program is now thread safe(r)
3406 ** bug fix: inner with-recursive-lock no longer releases the mutex
3407 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3408 * fixed some bugs revealed by Paul Dietz' test suite:
3409 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3410 EXPECTED-TYPE slots filled.
3411 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3413 ** MAKE-CONDITION accepts classes as type-designators.
3414 ** COMPILE may never return NIL.
3415 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3416 range before calling Unix time functions
3418 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3419 * numerous signal handling fixes to increase stability
3420 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3421 * minor incompatible change: we now correctly canonize default
3422 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3423 as per the MOP, rather than the historical (INITARG INITFUNCTION
3424 INITFORM). (reported by Bruno Haible)
3425 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3426 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3427 for more information.
3428 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3429 pathname is a directory pathname.
3430 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3431 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3433 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3434 :METACLASS argument in addition to a class name. (reported by
3435 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3436 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3437 (reported by Bruno Haible; patch from Gerd Moellmann)
3438 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3440 * bug fix: more cleanups to the floating point exception handling on
3441 x86-64 (thanks to James Knight)
3442 * bug fix: the compiler does not try to constant fold calls of
3443 COERCE and BIT-* functions when they return freshly constructed
3444 objects. (reported by Nikodemus Siivola and Paul Dietz)
3445 * optimization: improved the MIPS versions of generic (in the
3446 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3447 * optimization: direct conversion of (unsigned-byte 32) to floats on
3448 the PowerPC platform.
3449 * optimization: structure instances with raw slots now use less
3450 memory, and probably show better memory locality. (thanks to
3452 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3453 are treated as requests for stack allocation on the x86-64,
3454 Alpha-32, PPC and SPARC platforms.
3455 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3456 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3457 (thanks to Tony Martinez)
3459 ** gcing a dead thread can no longer lead to lockups
3460 ** threads block signals until they are set up properly
3461 ** errno is no longer shared by threads
3462 ** interrupt-thread restores the eflags register on x86
3463 ** fixed some lockups due to gc/thread interaction
3464 * fixed some bugs revealed by Paul Dietz' test suite:
3465 ** invalid dotted lists no longer raise a read error when
3466 *READ-SUPPRESS* is T
3467 ** signal an error if a symbol that names a declaration is used
3468 as the name of a type, or vice versa
3469 ** allow using the (declare (typespec var*)) abbreviation for
3470 (declare (type typespec var*)) with all type specifiers
3471 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3472 ** always return NIL from PPRINT-POP when OBJECT is NIL
3473 ** don't signal errors when pretty-printing malformed LABELS,
3474 FLET or MACROLET forms
3475 ** declarations in a DOLIST body are also in scope for the
3477 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3479 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3482 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3483 * fixed cross-compiler leakages that prevented building a 32-bit
3484 target with a 64-bit host compiler.
3485 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3486 opened with :IF-EXISTS :OVERWRITE.
3487 * fixed bug 281: error for an invalid qualifier in a short-form method
3488 combination method is not signalled until the faulty method is called.
3489 * bug fix: iteration variable type inferrer failed to deal with open
3490 intervals. (reported by Alan Shields)
3491 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3492 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3493 or more runtime options were provided to the sbcl binary.
3494 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3495 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3496 * optimization: there's now a fast-path for fixnum arguments in the
3497 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3498 * optimization: the code generated on x86-64 is more compact thanks
3499 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3500 * bug fix: floating-point exception handling now partly works on
3501 x86-64. (Thanks to James Knight)
3502 * improvement to the MIPS backend from Thiemo Seufer: C-style
3503 64-bit long long arguments and return values to alien functions
3505 * fixed some bugs revealed by Paul Dietz' test suite:
3506 ** the type-error signalled from WARN has a filled-in DATUM slot.
3507 ** the type-error required when a stream is not associated with
3508 a file has the stream as its datum.
3509 ** type-errors on single-floats on x86-64 no longer have
3510 :INVALID-OBJECT as the datum
3511 ** the type-errors signalled for invalid function names now have
3512 a correct expected type
3513 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3514 for structures defined with a :TYPE. Documentation strings for
3515 typed structures are no longer immediately discarded
3516 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3517 broadcast streams and synonym streams. FILE-LENGTH now also works
3518 on broadcast streams.
3520 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3521 * incompatible change: the --noprogrammer option, deprecated since
3522 version 0.7.5, has been removed. Please use the equivalent
3523 --disable-debugger option instead.
3524 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3526 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3527 inoperational for a while now) has been completely removed.
3528 * null lexical environments are now printed as #<NULL-LEXENV>,
3529 significantly reducing the amount of clutter in typical backtraces.
3530 * documentation on weak pointers, finalization, and after GC hooks
3531 has been added to the manual.
3532 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3533 as other specialized array types, is much faster. SUBSEQ and
3534 COPY-SEQ on such arrays have also been sped up.
3535 * optimization: EQL is now more efficient when at least other argument
3536 is known to be of type (OR FIXNUM (NOT NUMBER)).
3537 * fixed bug: the runtime is now less vulnerable to changes in the
3538 size of the SBCL object on OS X, and virtual memory is reserved for
3539 all spaces that need to be at a fixed address.
3540 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3541 * fixed bug: finalizers and after GC hooks that cause consing are now
3543 * fixed bug: compiler error messages and summaries are now printed to
3544 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3545 * fixed inference of the upper bound of an iteration variable.
3546 (reported by Rajat Datta).
3547 * fixed bug 211e: calling local functions with duplicated constant
3548 keyword argument no longer causes a bogus style warning about an
3550 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3551 ftype declaration to be disregarded. (reported by Dave Roberts)
3552 * fixed bug 373: caused by erronous compilation of references to alien
3553 variables in the runtime on ppc/darwin.
3554 * fixed bug 376: CONJUGATE type deriver.
3555 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3556 (reported by Baughn on #lisp)
3557 * a cross-compiler bug on non-x86 platforms has been identified and
3558 fixed. (thanks to Bruno Haible)
3559 * improvements to the MIPS runtime code for increased stability.
3560 (thanks to Thiemo Seufer)
3561 * increased the maximimum compact environment size to allow
3562 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3563 * partial workaround for bug 135: don't name the function we're
3564 calling for hairy cases of EVAL, so as not to accumulate one environment
3565 entry per call to EVAL. (reported by Kevin Reid)
3566 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3567 * optimization: type testing for non-vector arrays should be faster.
3568 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3570 * bug fix: setting 31st element of a bit vector to zero did not work
3572 * bug fix: redefining a class definition which failed due to a
3573 previous accessor / function clash now works (but see BUGS entry
3574 #380 for more problems in this area). (thanks to Zach Beane)
3575 * the long form of DEFINE-METHOD-COMBINATION disables method group
3576 checking when given a single method group with pattern *. (thanks
3578 * on x86 compiler supports stack allocation of results of simple
3579 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3580 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3581 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3582 * fixed some bugs related to Unicode integration:
3583 ** the restarts for recovering from input and output encoding
3584 errors only appear when there is in fact such an error to
3586 * fixed some bugs revealed by Paul Dietz' test suite:
3587 ** MISC.549 and similar: late transformation of unsafe type
3588 assertions into derived types caused unexpected code
3590 ** SCALE-FLOAT type deriver is less wrong.
3591 ** type derivers for EXP, LOG and similar functions compute result
3592 types for complex arguments better.
3593 ** (MISC.563) CONJUGATE type deriver works for very restricted
3595 ** out-of-line type testers for character strings are available.
3596 ** EQUAL compiler transform understands specialness of objects
3598 ** accessing double-floats stored on the stack now works on x86-64.
3599 ** debugger internals could sometimes create invalid lispobjs,
3600 resulting in GC crashes.
3601 ** MISC.548: type check weakening can convert required type into
3603 ** initialization forms for bindings are not in scope of free special
3606 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3607 * incompatible change: thread support for non-NPTL systems has
3608 been removed - locking is buggy and unreliable. A threaded
3609 SBCL build will now warn at startup and refuse to create
3610 new threads, unless futex support is detected in the kernel
3611 * incompatible change: the top level REPL now has only an ABORT
3612 restart associated with it, not TOPLEVEL and ABORT as it used to.
3613 TOP and TOPLEVEL are now available as debugger commands for
3614 returning to the top level.
3615 * incompatible change: forms evaluated in the REPL now use the
3616 global optimization policy.
3617 * incompatible change: user- and system-initialization files are
3618 no longer processed with LOAD, but by READ and EVAL; hence the
3619 global optimization policy, startup package, readtable, etc,
3621 * The .fasl file format number has been incremented because of
3622 various incompatible changes.
3623 * internal entry point details and argument counts no longer appear
3624 in backtraces unless explicitly requested by setting
3625 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3626 * built-in and standard functions no longer have names like "top
3627 level local call to FOO".
3628 * fixed bug 32: functions defined in non-null lexical environments
3629 now have more legible printed representation
3630 * fixed bug 33: functions defined in non-null lexical environemnts
3631 are now more amenable to inspection by INSPECT.
3632 * workaround for bug 354: XEPs no longer appear in backtraces unless
3633 explicitly requested.
3634 * fixed bug: receiving the signal which results from attempting to
3635 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3636 SIGBUS on other *BSDs) on architectures where the C stack is also
3637 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3638 to debugger confusion or wild instability. (reported by Cheuksan
3640 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3641 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3642 (reported by Lutz Euler)
3643 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3644 compiled code. (reported by Paul Dietz)
3645 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3646 specialized parameter to a method to something that is not TYPEP
3647 the specializer is now possible.
3648 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3649 face of package deletion.
3650 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3651 pathname. (reported by David Tolpin on c.l.l)
3652 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3653 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3654 STRING-STREAM and FILE-STREAM, respectively.
3655 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3656 than previously; in addition, its test suite is now run on build.
3657 (thanks to Luke Gorrie)
3658 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3659 * optimization: added a immediate representation for single-floats
3661 * fixed some bugs revealed by Paul Dietz' test suite:
3662 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3663 ** attempting to create a package with a colliding nickname causes
3664 correctable errors to be signalled.
3665 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3666 ** several x86-64 backend bugs related to sign-extension of immediate
3669 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3670 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3671 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3673 * fixed loading of multiply forward-referenced layouts.
3674 (thanks to Cheuksan Wang)
3675 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3676 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3677 (see COMPILE-FILE documentation for details of :PRINT option)
3678 * fixed bugs 19 and 317: fixed-format floating point printing is
3679 more accurate. This also fixes a bug reported by Adam Warner
3680 related to the ~@F format directive.
3681 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3683 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3684 dispatch table if the from-char is a dispatch macro character.
3685 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3686 by the wordsize no longer ignore the last word. (reported by Lutz
3688 * fixed bug in type checking of dynamic-extent variables. (reported
3690 * optimization: sequence traversal functions use their freedom to
3691 coerce function designators to functions.
3692 * optimization: code with many calls to CLOS methods specialized on
3693 CLOS classes has had redundant type checks removed.
3694 * optimization: added declarations to speed up operations that access
3695 the internal character database (for example STRING-UPCASE)
3696 * optimization: comparison operations between floats and sufficiently small
3697 fixnums no longer create extra rationals
3698 * fixed some bugs related to Unicode integration:
3699 ** portions of multibyte characters at the end of buffers for
3700 character-based file input are correctly transferred to the
3701 start of the buffer at the next read.
3702 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3703 passing it through to OPEN.
3704 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3705 argument given to internal calls to OPEN.
3706 ** the built-in comment readers (introduced by character sequences
3707 ";" and "#|") are more forgiving to encoding errors; they will
3708 STYLE-WARN and then attempt to resync the stream at a character
3709 boundary. (thanks to Teemu Kalvas)
3710 * fixed some bugs in the x86-64 port:
3711 ** Negative short int return values from c-calls are sign-extended
3713 ** The stack is aligned to 16-bytes for c-calls, as required by
3714 the ABI. (thanks to Cheuksan Wang)
3715 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3716 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3717 for enums. (thanks to Vincent Arkesteijn)
3718 ** Multiple small optimizations and bugfixes for floating point
3720 * fixed some bugs revealed by Paul Dietz' test suite:
3721 ** Space, Tab, Linefeed, Return and Page have the invalid
3722 secondary constituent character trait.
3723 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3725 ** WITH-INPUT-FROM-STRING should only update the index place on
3727 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3728 works more reliably.
3729 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3730 with one-dimensional arrays with fill pointers.
3731 ** TYPE-OF failed on a complex with an integer realpart and a
3733 ** compiler failure during type inference for the code of form
3734 (IF (EQL X (THE ...)) ...) (MISC.535).
3736 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3737 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3738 platform. The port supports 61-bit fixnums, large memory spaces
3739 and reloading shared object files.
3740 * enhancement: saving cores with foreign code loaded is now
3741 supported on ppc/Darwin in addition to the previously supported
3743 * enhancement: the statistical profiler now walks deeper into the
3744 call stack for more meaningful call-graphs and accrued time
3745 reports (x86/x86-64 only). It also now reports time spent in
3747 * enhancement: it is now possible to trace most individual methods
3748 of a generic function in addition to tracing the generic function
3750 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3752 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3753 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3754 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3755 produces an error. (thanks to Vincent Arkesteijn)
3756 * bug fix: NAMESTRING on pathnames with :WILD components in their
3757 directories works correctly. (thanks to Artem V. Andreev)
3758 * fixed bug 125: compiler preserves identity of closures. (reported
3760 * bug fixed: functions with &REST arguments sometimes failed with
3761 "Undefined function" when compiled with (DEBUG 3). (reported by
3763 * bug fix: overflow during compiling of setting element of a bit
3764 vector with constant index and value. (reported by Timmy Douglas)
3765 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3766 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3767 * on x86 compiler partially supports stack allocation of dynamic-extent
3769 * GO and RETURN-FROM do not check the extent of their exit points
3770 when compiled with SAFETY 0.
3771 * fixed some bugs related to Unicode integration:
3772 ** encoding and decoding errors are now much more robustly
3773 handled; it should now be possible to recover even from invalid
3774 input or output to the terminal. (thanks to Teemu Kalvas)
3775 ** provided a first cut at implementing STRING-TO-OCTETS and
3776 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3777 ** altered the SB-MD5 contributed module slightly, changing the
3778 interface just enough for it to be supportable for builds where
3779 lisp characters are not eight bits.
3780 * fixed some bugs revealed by Paul Dietz' test suite:
3781 ** the FORMATTER-generated functions for ~V[ conditionals require
3782 the correct number of arguments.
3783 ** READ-FROM-STRING returns the mandated second value when applied
3784 to displaced strings.
3785 ** the #\Rubout and #\Backspace characters are treated as invalid
3786 constituent characters by the tokenizer.
3788 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3789 * new feature: reloading changed shared object files with
3790 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3791 * new feature: references to foreign variables and functions
3792 can now be compiled and loaded before the corresponding shared
3793 object file is loaded, as long as the foreign definitions are
3794 available at runtime.
3795 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3796 supported. (thanks to Dan Debertin)
3797 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3798 just keywords. (thanks to Vincent Arkesteijn)
3799 * fixed bug #331: structure-class instances corresponding to
3800 DEFSTRUCT forms are now created eagerly.
3801 * fixed bug #345: backtraces from calls to undefined functions work
3802 on x86 as well. Related bug #61 is now also partially fixed on x86
3803 (backtraces from throws to unknown catch tags.)
3804 * bug fix: lambda-list parsing is now stricter vrt. order and number
3805 of lambda-list keywords.
3806 * bug fix: as specified by AMOP, an error is signalled if a
3807 class-option appears multiple times in a DEFCLASS form. (reported
3809 * bug fix: RANDOM can be compiled when the compiler derives the type
3810 of its numeric argument as a disjoint set of small integers.
3811 (reported by Paul Dietz)
3812 * bug fix: starting a core saved with shared objects loaded when
3813 those objects are not available no longer causes threaded SBCL to
3814 hang. (reported by Sean Ross)
3815 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3817 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3818 argument, which must always be NIL. (reported by Kalle Niemitalo)
3819 * bug fix: printing 1.0d+23 no longer results in an error.
3820 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3821 * bug fix: structure slot setters preserve evaluation order. (thanks
3823 * fixed some bugs related to Unicode integration:
3824 ** RUN-PROGRAM can allow its child to take input from a Lisp
3825 stream. (reported by Stefan Scholl)
3826 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3827 locales. (reported by Ken Causey)
3828 * fixed some bugs revealed by Paul Dietz' test suite:
3829 ** INCF, DECF and REMF evaluate their place form as specified in
3831 ** FORMATTER expands ~{ ~} iteration directives with V or #
3832 parameters correctly.
3833 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3834 consequent uses no arguments correctly.
3835 ** the system has a partial understanding of the (COMPLEX RATIO)
3837 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3840 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3841 * new feature: a build-time option (controlled by the :SB-UNICODE
3842 keyword feature, enabled by default) for building the system with
3843 support for the entire 21-bit character space defined by the
3845 * new feature: the system now has rudimentary external-format
3846 support; the primary user-visible change at this time is that
3847 characters with the high bit set (such as lower-case-e-acute) will
3848 print correctly to a terminal in a UTF-8 environment.
3849 * minor incompatible change: BASE-CHAR no longer names a class;
3850 however, CHARACTER continues to do so, as required by ANSI.
3851 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3852 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3853 has been moved to the SB-EXT package (temporarily re-exported from
3855 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3856 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3858 * fixed bug #351: better error-handlind and reporting for malformed
3860 * fixed bug #350: bignum-printing is now more memory-efficient,
3861 allowing printing of very large bignums, eg. (expt 2 10000000).
3862 (reported by Bruno Haible)
3863 * fixed bug #302: better primitive-type selection for intersection
3865 * fixed bug #308: non-graphic characters now all have names, as
3866 required. (reported by Bruno Haible)
3867 * bug fix: redefining a class with different superclasses now correctly
3868 removes it from the direct-subclasses of its previous superclasses.
3869 (reported by David Morse)
3870 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3871 new value now works. (reported by Bruno Haible)
3872 * bug fix: correct canonicalization of multiple non-standard slot
3873 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3874 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3875 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3876 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3877 now exists, an signals an error.
3878 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3879 during macroexpansion for non-iteration variables as well. (reported
3880 by Bruno Haible for CMUCL)
3881 * bug fix: Cyclic structures and unprintable objects in compiler
3882 messages no longer cause errors. (reported by Bruno Haible)
3883 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3884 and READ-FROM-STRING all now return a primary value of NIL if
3885 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3886 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3887 (reported by Bruno Haible for CMUCL)
3888 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3889 do not designate a condition. (reported by Bruno Haible for
3891 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3892 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3893 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3894 permitting resolution in favour of any of the conflicting symbols.
3895 (reported by Bruno Haible for CMUCL)
3896 * bug fix: EQUAL compiler optimizations is less aggressive on
3897 strings which can potentially compare true despite having distinct
3898 specialized array element types.
3899 * bug fix: unit enumerations can be defined without dividing by
3900 zero. (thanks to Vincent Arkesteijn)
3901 * FORMAT compile-time argument count checking has been enhanced.
3902 (report from Bruno Haible for CMUCL)
3903 * a partial workaround for the bug 262: the compiler does not try to
3904 inline-expand a local function doing RETURN-FROM from a deleted
3905 BLOCK. (thanks to Peter Denno for the bug report and to David
3906 Wragg for the simple test case)
3907 * fixed some bugs revealed by Paul Dietz' test suite:
3908 ** RENAME-PACKAGE allows all package designators as new package
3910 ** constraint propagation and lambda variable substitution are
3911 more cautious in dealing with partially deleted code.
3912 ** compiler sometimes lost reoptimization passes.
3913 ** CERROR, given a condition as condition designator, passes its
3914 remaining arguments to the continue format control without
3916 ** Case-altering FORMAT directives work correctly on non-ASCII
3918 ** The REAL type specifier handles bounds outside the floating
3919 point ranges without signalling FLOATING-POINT-OVERFLOW.
3920 ** Functions with IR1-transformations can create intercomponent
3921 references to global functions.
3922 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3924 ** FORMAT ~R treats a nil value for its first parameter correctly.
3926 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3927 * enhancement: saving cores with foreign code loaded is now
3928 supported on x86/NetBSD and sparc/Linux in addition to the previously
3929 supported platforms.
3930 * bug fix: on some platforms repeated installations caused multiple
3931 copies of HTML documentation to be installed -- should not happen
3932 any more. (reported by Stefan Scholl)
3933 * bug fix: parsing self-recursive alien record types multiple times
3934 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3935 original patch by Helmut Eller for CMUCL)
3936 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3937 (thanks to Richard Kreuter)
3938 * bug fix: defining classes whose accessors are methods on existing
3939 generic functions in other (locked) packages no longer signals
3940 bogus package lock violations. (reported by François-René Rideau)
3941 * bug fix: special variables as DEFMETHOD parameters no longer have
3942 associated bogus type declarations. (reported by David Wragg and
3944 * bug fix: read-write consistency on streams of element-type
3945 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3946 * bug fix: redefiniton of the only method of a generic function with
3947 no DEFGENERIC no longer emits a full WARNING. In addition,
3948 redefinition of generic functions with no DEFGENERIC to an
3949 incompatible lambda list now signals an error. (thanks to Zach
3951 * bug fix: DEFGENERIC now works even when there's a function of the
3952 same name in an enclosing lexical environment. (thanks to Zach
3954 * fixed compiler failure, caused by instrumenting code during
3955 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3956 * optimization: added loop analysis and improved register allocation
3957 * fixed some bugs revealed by Paul Dietz' test suite:
3958 ** POSITION on displaced vectors with non-zero displacement
3959 returns the right answer.
3960 ** (SIMPLE-STRING) is a valid type specifier for sequence
3962 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3964 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3965 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3967 ** The justification version of the FORMAT ~< directive treats
3968 non-zero minpad parameter correctly.
3970 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3971 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3972 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3973 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3974 the supported interface.
3975 * new feature: Single-stepping of code compiled with DEBUG 2 or
3976 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3977 * new feature: saving cores with foreign code loaded is now
3978 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3979 Timothy Moore's work for CMUCL)
3980 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3981 parameters to * instead of NIL if no initform is supplied.
3982 (reported by Johan Bockgaard)
3983 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3984 correctly when FUNCALL appears as the car of the form. Note:
3985 despite this FUNCALL forms are not currently subject to
3986 compiler-macro expansion. (port of Raymond Toy's fix for the
3987 same from CMUCL, reported by Johan Bockgaard)
3988 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3989 (thanks for Teemu Kalvas)
3990 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3991 case instead of terminating the iteration (thanks for Julian
3992 Squires, Sean Champ and Raymond Toy)
3993 * bug fix: incorrect expansion of defgeneric that caused a style
3994 warning. (thanks for Zach Beane)
3995 * bug fix: slot accessor effective method computation works properly
3996 for classes with multiple non-standard applicable methods on
3997 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3998 * on x86 compiler supports stack allocation of results of LIST and
3999 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4000 CMUCL implementation by Gerd Moellmann)
4001 * fixed some bugs revealed by Paul Dietz' test suite:
4002 ** FORMAT strings with both the ~<~:;~> form of the justification
4003 directive and pretty-printing directives cause an error.
4005 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4006 * incompatible change: the internal functions
4007 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4008 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4009 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4010 instead of the old functions.
4011 * new feature: on platforms where "dladdr" is available foreign
4012 function names now appear in backtraces. (based on Helmut Eller's
4014 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4015 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4017 * documentation: ASDF manual is now distributed with SBCL.
4018 * bug fix: SBCL can now load its contributed modules with REQUIRE
4019 even if the system-provided entries have been removed from
4020 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4022 * bug fix: backtraces involving undefined functions or assembly
4023 routines are more informative. (thanks to Brian Downing)
4024 * bug fix: mutually referent alien structures now work correctly.
4025 (reported by Rick Taube)
4026 * bug fix: structures defined by WITH-ALIEN can be referred to
4027 within other definitions in the same WITH-ALIEN.
4028 * bug fix: division operators (MOD, TRUNCATE and the like) with
4029 constant zero divisors and integer dividends no longer generate
4031 * bug fix: provide default methods for INPUT-STREAM-P and
4032 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4033 * bug fix: improve the detection and resolution of MOP metacycles
4034 (where effective method computation depends on the generic function
4035 having its effective method computed). (reported by Bruno Haible)
4036 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4037 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4038 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4039 * bug fix: pathnames with relative directory components can be
4040 represented relative to default pathnames.
4041 * optimization: in taking the GCD of bignums, reduce the two bignums
4042 to approximately the same size (using Euclid's algorithm) before
4043 applying the more sophisticated binary GCD. (thanks to Juho
4045 * optimization: COUNT on bitvectors now operates word-at-a-time.
4046 * optimization: ASH with a positive, but not necessarily constant,
4047 (leftwards) shift, when in a modular context, is compiled to a
4049 * fixed some bugs revealed by Paul Dietz' test suite:
4050 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4051 if the corresponding argument is NIL.
4052 ** FORMAT directives accepting a minpad parameter treat negative
4054 ** literal commas as character parameters to FORMAT directives are
4056 ** literal spaces directly after ~<Newline> directives within a
4057 format-logical-block (~:< ~@:>) do not induce :FILL-style
4058 conditional newlines.
4059 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4060 as specified: it no longer includes conditional newlines).
4061 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4063 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4064 :PER-LINE-PREFIX argument does not evaluate to a string.
4066 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4067 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4068 the manual for details; for now, package locks can be disabled by
4069 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4070 if no major problems are found then it is likely that they will be
4071 compiled in unconditionally.
4072 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4073 unsupported operators on all platforms. To load a shared library
4074 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4075 object file, link it into a shared library outside of SBCL and
4076 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4078 * bug workaround: ROOM T and the GC were not working together
4079 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4080 reporting facility aren't preserved. That reporting has been
4081 disabled, so now until and unless someone figures out how to make it
4082 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4083 * minor incompatible change: as threatened around sbcl-0.8.0, the
4084 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4085 The symbols are also exported from SB-PCL for backwards
4086 compatibility, but more so than before SB-PCL should be treated as
4087 an implementation-internal package.
4088 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4090 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4091 It is known as of this release not to work on the Alpha, however.
4092 * fixed bug #167: errors signalled due to illegal syntax in method
4093 bodies are now more legible.
4094 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4095 designators and can hence be used with TYPEP.
4096 * fixed bug #333: CHECK-TYPE now ensures that the type error
4097 signalled, if any, has the right object to be accessed by
4098 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4099 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4100 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4102 * fixed bug #334: programmatic addition of slots using specialized
4103 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4104 and :ALLOCATION :CLASS slots.
4105 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4106 float exponents. (rereported by Peter Seibel)
4107 * fixed a bug: #\Space (and other whitespace characters) are no
4108 longer considered to be macro characters in standard syntax by
4109 GET-MACRO-CHARACTER.
4110 * fixed bug: initialization of condition class metaobjects no longer
4111 causes an instance of the condition to be created. (reported by
4113 * fixed bug: it is now possible to have slots such that
4114 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4115 description is neither :INSTANCE nor :CLASS.
4116 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4117 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4118 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4119 non-standard SLOT-DEFINITION-ALLOCATION values.
4120 * fixed bugs: various race conditions handling exiting threads.
4121 CL-PPCRE's thread torture test now passes.
4122 * fixed arguably-a-bug: GC time proportional to number of threads in
4123 system even when most of them are idle
4124 * optimization: improved performance of BIT and SBIT on bit-vectors.
4125 * .fasl file incompatibility: The fasl file version number has
4126 been incremented because of changes associated with package locks.
4128 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4129 * minor incompatible change: the system no longer provides
4130 optimization hints (conditions which are TYPEP
4131 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4132 mode; these hints are still emitted when higher SPEED optimization
4134 * new contrib module: a sampling profiler (profiling by statistical
4135 sampling, rather than by instrumenting functions) is available as
4136 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4137 * the behaviour of the standard function ED is now customizeable by
4138 third parties through a hook variable: see ED's documentation
4139 string for information on the protocol.
4140 * the compiler no longer emits efficiency notes for (FUNCALL X)
4141 when the type of X is uncertain under default optimization
4143 * fixed bug 276: mutating a binding of a specialized parameter to a
4144 method to something that is not TYPEP the specializer is now
4146 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4147 exhibit the required behaviour on the x86 platform. (thanks to
4148 Peter van Eynde, Eric Marsden and Bruno Haible)
4149 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4150 even for difficult arguments. (reported by Peter Graves)
4151 * fixed bug 141a: the backquote printer now descends quoted
4153 * fixed another bug in backquote printing: no more destructive
4154 modification of the form's list structure. (reported by Brian
4156 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4157 move between its address being taken and the call to
4158 interrupt_thread, fixing a crashing race condition.
4159 * the SB-POSIX contrib implementation has been adjusted so that it
4160 no longer exhibits ridiculously poor performance when constructing
4161 instances corresponding to C structs.
4163 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4164 * minor incompatible change: the sb-grovel contrib now treats C
4165 structures as alien (in the sense of SB-ALIEN) objects rather than
4166 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4167 has implications for memory management of client code
4168 (sb-grovel-returned objects must now be manually managed) and for
4169 type safety (alien objects now have full types).
4170 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4171 used to control emission of compiler diagnostics, rather than the
4172 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4173 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4174 quality should be considered deprecated.
4175 * install.sh now installs the user manual as well
4176 * (not quite a new documentable feature, but worth considering in
4177 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4178 beginnings of a semantically meaningful condition hierarchy is
4179 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4181 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4182 designator as the defaults argument.
4183 * fixed bug: Displaced arrays whose displaced-to array has become
4184 too small now cause ARRAY-DIMENSION to signal an error, providing
4185 for safer bounds-checking. (reported by Bruno Haible)
4186 * fixed bug: DEFCLASS slot definitions with identical :READER and
4187 :WRITER names now signal a reasonable error. (reported by Thomas
4189 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4191 * fixed bug: Invalid slot specification errors now print correctly.
4192 (thanks to Zach Beane)
4193 * fixed bug 320: Shared to local slot value transfers in class
4194 redefinitions now happen corrently from superclasses as
4195 well. (reported by Bruno Haible)
4196 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4198 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4199 improper lists correctly. (reported by Bruno Haible)
4200 * fixed bug 313: source-transform for <fun-name> was erroneously
4201 applied to a call of a value of a variable with name <fun-name>.
4202 (reported by Antonio Menezes Leitao)
4203 * fixed bug 307: The obsolete instance protocol ensures that
4204 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4205 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4206 remove dead unknown-values globs from the middle of the stack.
4207 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4208 easier to resume long computations after using *BREAK-ON-SIGNALS*
4209 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4210 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4211 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4212 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4213 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4214 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4216 * fixed a (fairly theoretical) bug in string printing: if
4217 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4218 does not have array-element-type equal to the most general string
4220 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4221 function name. (thanks to Nikodemus Siivola)
4222 * fixed bug: compile-time format string checker failed on
4223 non-closed ~{. (reported by Thomas F Burdick)
4224 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4225 don't warn on legal loop code involving more than one aggregate
4226 boolean. (thanks to Nikodemus Siivola)
4227 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4228 in keyword position to MAKE-PACKAGE was not being reported as
4230 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4231 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4233 * fixed bugs 280 and 312: the checking for multiple definitions in a
4234 file is less likely to become confused by uses of inline
4236 * fixed bug: the #S reader macro performs the keyword coercion
4237 specified for slot names. (reported by Kalle Niemitalo)
4238 * fixed bug: lambda lists may contain symbols whose names start with
4239 & but are not lambda-list-keywords; their occurrence triggers a
4241 * fixed bug 321: define-method-combination argument lambda lists do
4242 not cause invalid code to be generated when &optional or &aux
4243 variables have default values. (reported by Bruno Haible)
4244 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4245 have CLOS classes; this appears also to have fixed reported
4246 instability in stack exhaustion detection.
4247 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4248 MUFFLE-WARNING when no associated restart is present is now
4250 * optimization: rearranged the expansion of various defining macros
4251 so that each expands into only one top-level form in a
4252 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4254 * optimization: used a previously little-used slot in symbols to
4255 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4257 * fixed some bugs revealed by Paul Dietz' test suite:
4258 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4260 ** Fixed an optimization bug related to inheritance of initforms
4261 from local to shared slots.
4262 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4263 ** CAST optimizer forgot to flush argument derived type.
4264 ** print/read consistency on floats is now orders of magnitude
4265 more likely. (thanks also to Bruno Haible for a similar report
4267 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4268 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4269 for objects of type REAL. Make it so.
4270 ** SXHASH is specified (infelicitously) to respect similarity,
4271 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4272 it so. (thanks to Markus Ziegler)
4273 ** on the Alpha, the compiler succeeds in compiling functions
4274 returning a known number of arguments greater than 63.
4275 ** fixed handling of invalid NIL arguments in keyword position
4277 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4279 ** provided a readably-printable representation for RANDOM-STATE
4281 ** ensured that pathnames, where they have a namestring, always
4282 print using #P"..." syntax.
4284 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4285 * Support for the forthcoming 2.0 version of the NetBSD kernel
4286 running on x86 hardware has been added. (thanks to Perry
4287 E. Metzger most immediately, and others for their past work)
4288 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4289 current release version; SBCL's OpenBSD support had been broken
4290 since about the time of OpenBSD's switch to ELF binary format.)
4291 * [placeholder for DX summary]
4292 ** user code with &REST lists declared dynamic-extent, under high
4293 speed or space and low safety and debug optimization policy.
4294 * The manual has been converted to Texinfo format and the debugger
4295 chapter from the cmucl manual has been added.
4296 * A facility has been added to extract documentation strings from
4297 sbcl and store them as Texinfo-formatted snippets for inclusion in
4298 the manual (via Texinfo's @include directive)
4299 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4300 the test case to Dave Roberts)
4301 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4302 pointers. (reported by Sean Ross)
4303 * bug fix: PROFILE output is printed nicely even for large numerical
4304 values. (thanks to Zach Beane)
4305 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4306 greater than 32 handle EOF correctly.
4307 * bug fix: on X86 an immediate argument of the IMUL instruction is
4308 correctly printed in disassembly. (thanks to Lutz Euler)
4309 * bug fix: class slots in redefined classes preserve their old
4310 values. (thanks to Bruno Haible and Nikodemus Siivola)
4311 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4312 succeeds. (reported by Marco Baringer)
4313 * fixed some bugs revealed by Paul Dietz' test suite:
4314 ** READ-SEQUENCE now works on ECHO-STREAMs.
4315 ** RATIONALIZE works more according to its specification. (thanks
4318 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4319 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4320 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4321 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4322 should matter to you only if you rebind the printer control
4323 variables and then find you want different bindings in the
4324 debugger than in the ordinary execution of your program.)
4325 * The runtime build system has been tweaked to support building
4326 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4327 assembler and linker. (thanks to Nikodemus Siivola)
4328 * Unbound, undefined, undeclared variables now trigger full
4329 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4330 more often programmer error than deliberate exploitation of undefined
4332 * optimization: the hash algorithm for strings has changed to one
4333 that is less vulnerable to spurious collisions. (thanks to Juho
4335 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4336 needless bounds checking. (thanks to Juho Snellman)
4337 * optimization: implemented multiplication as a modular
4338 (UNSIGNED-BYTE 32) operation on the PPC backend.
4339 * fixed some bugs revealed by Paul Dietz' test suite:
4340 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4342 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4343 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4344 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4346 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4348 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4350 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4351 their output stream on EOF from read.
4352 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4353 have been read to end-of-file.
4354 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4356 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4357 description of determination of which consecutive characters
4359 ** Printing the "Space" character with escaping on now yields "#\\ ",
4360 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4361 ** Reading floating-point numbers with *READ-BASE* set to a number
4362 less than 10 works correctly.
4363 ** Reading floating-point numbers with *READ-BASE* set to a number
4364 more than 10 works correctly.
4365 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4366 the readtable currently in effect.
4368 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4369 * minor incompatible change: parsing of namestrings on a physical
4370 (Unix) host has changed; numbers after the final #\. in a
4371 namestring are no longer interpreted as a version field. This is
4372 intented to be largely invisible to the user, except that the
4373 meaning of the namestring "*.*.*" has changed: it now refers to a
4374 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4375 should usually be replaced by
4376 (make-pathname :name :wild :type :wild :version :wild)
4377 with the added benefit that this is more likely to be portable.
4378 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4379 option to OPEN now signals an error if the file being opened
4380 exists; this may have an impact on existing code.
4381 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4382 signals received, on the PowerPC platforms (both Linux and
4383 Darwin). (thanks to Pierre Mai for pointing out the location of
4385 * several fixes on OS X: The system now builds and runs cleanly on
4386 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4387 (thanks to Brian Mastenbrook)
4388 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4389 second-resolution: integer multiples of 1/3600 between -24 and 24.
4390 (thanks to Vincent Arkesteijn)
4391 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4392 type when called with 1 argument; PEEK-CHAR checked type of
4393 PEEK-TYPE only after having read first character from a
4394 stream. (reported by Peter Graves)
4395 * bug fix: the garbage collector now has much better locality
4396 behaviour, and in particular no longer treats all memory as being
4397 exhausted when many small objects point to each other in a deeply
4399 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4400 recognized as being TYPEP their class.
4401 * bug fix: the PUSHNEW documentation string has been corrected.
4402 (thanks to Vincent Arkesteijn)
4403 * bug fix: defaulting of the value for the last of an atypically
4404 large number of multiple values being bound was not being
4405 performed correctly on the Alpha or PPC platforms
4406 * optimization: implemented multiplication as a modular
4407 (UNSIGNED-BYTE 32) operation on the x86 backend.
4408 * optimization: SEARCH on simple-base-strings can now be open-coded.
4409 (see also contrib/compiler-extras.lisp for inspiration for
4410 teaching the compiler about the Boyer-Moore algorithm).
4411 * value, returned by MAX (and MIN) called with several EQUALP, but
4412 not EQL, arguments now does not depend on compiler settings.
4413 * fixed some bugs revealed by Paul Dietz' test suite:
4414 ** in stack analysis liveness information is propagated from
4415 non-local entry points.
4416 ** pathwise CAST removing failed when the CAST node did not start
4418 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4419 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4421 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4422 host is already defined.
4423 ** RENAME-FILE works on streams instead of signalling an internal
4425 ** PEEK-CHAR uses the current readtable when determining whether
4426 or not a character is whitespace.
4427 ** MERGE-PATHNAMES handles the case when the pathname does not
4428 specify a name while the default-pathname specifies a version.
4429 ** Pathnames now stand a better chance of respecting print/read
4431 ** Attempting to use standardized file system operators with a
4432 pathname with invalid :DIRECTORY components signals a
4434 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4436 ** DIRECTORY on logical pathnames is more correct.
4437 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4438 signal a TYPE-ERROR if their argument is not a stream.
4439 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4440 designator argument does not designate a stream.
4441 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4442 examining the synonym.
4443 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4445 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4446 element-type larger than ([UN]SIGNED-BYTE 32).
4448 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4449 * When built with the :SB-FUTEX feature, threaded builds now take
4450 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4451 for faster/more reliable mutex and condition variable support.
4452 * Incompatible change (but one you probably shouldn't have been using
4453 anyway): the interface and code for arbitrating between multiple
4454 threads in the same user session has been redesigned.
4455 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4456 error when called without an explicit environment argument.
4457 (thanks to Nikodemus Siivola)
4458 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4459 confused about their position. (thanks to Adam Warner and Gerd
4461 * bug fix: Pretty printing backquoted forms with unquotations in the
4462 argument list position of various code constructs such as LAMBDA
4463 now works correctly. (reported by Paul Dietz)
4464 * bug fix: Pretty printing unquotations no longer loses all
4465 stream position information.
4466 * optimization: performance of string output streams is now less
4467 poor for multiple small sequence writes.
4468 * optimization: performance of CSUBTYPEP in the presence of complex
4469 expressions involving CONS and NOT many times has been improved.
4470 (reported by Paul Dietz)
4471 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4473 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4474 streams for the REPL, for the debugger, and so on. (thanks to
4476 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4477 * fixed some bugs revealed by Paul Dietz' test suite:
4478 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4479 is ignored if it is too small, rather than propagating through
4480 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4481 ** extremely complex negations of CONS types were not being
4482 sufficiently canonicalized, leading to inconsistencies in
4484 ** VALUES tranformer lost derived type.
4486 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4487 * fixed a bootstrapping bug: the build process no longer assumes
4488 that the various BOOLE-related constants have the same value in
4489 host and target lisps. (noted by Paul Dietz' test suite on an
4490 SBCL binary built from CLISP)
4491 * The system can now be dynamically linked on the MIPS platform,
4492 which enables dynamic loading of foreign code from Lisp. (thanks
4493 to Ralf Baechle for discussions on the MIPS ABI)
4494 * The system now records debugging information for its own source
4495 files in a filesystem-position-independent manner, relative to
4496 the "SYS" logical host.
4497 * fixed a compiler bug: MV-LET convertion did not check references
4498 to the "max args" entry point. (reported by Brian Downing)
4499 * tweaked disassembly notes to be less confident about proclaiming
4500 some instruction as an LRA. (thanks to Brian Downing)
4501 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4502 now each have their own history, command character, and other
4503 characteristics. (thanks to David Lichteblau)
4504 * fixed some bugs revealed by Paul Dietz' test suite:
4505 ** compiler failure in compiling LOGAND expressions including a
4507 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4508 shift greater than 32.
4509 ** FLUSH-DEST did not mark blocks for type check regeneration.
4510 ** HANDLER-CASE failed to accept declarations in handler clauses
4511 in some circumstances.
4513 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4514 * New code in contrib/sb-introspect (still probably not entirely
4515 stable yet) provides some support for smart Lisp development
4516 environments like SLIME.
4517 * The conditions signalled for errors occurring when loading .fasl
4518 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4519 in a way which should help ASDF recover gracefully.
4520 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4521 stuff has been cleaned up. If you code contrib/ stuff, this might
4522 affect you, and you can look at contrib/README, contrib/STANDARDS,
4523 and/or the 0.8.4.27 diff to check.
4524 * In full calls the compiler now does not generate checks for declared
4525 argument types for all arguments.
4526 * various threading fixes
4527 ** and some experimental patches which didn't make it into
4528 the main tree for this release, but which are shipped in
4529 contrib/experimental-thread.patch as a possible fix for some
4530 failures (deadlock, spinning...) in GC-intensive multithreaded
4532 * fixed PPC build problem (source code incompatibility of different
4533 library versions): added offsetof() hackery which attempts to divine
4534 where glibc maintainers put uc_mcontext today
4535 * fixed bug 282: compiler does not trust type assertions while passing
4536 arguments to a full call.
4537 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4538 &OPTIONAL VALUES type parameter.
4539 * fix bug 214: algorithm for noting rejected templates is now more
4540 similar to that of template seletion. (also reported by rydis on
4542 * fixed bug 141b: printing backquoted information readably and prettily
4543 inserts a space where necessary.
4544 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4545 (CHARACTER 10) are now reported as errors, rather than propagated
4546 as unknown types. (reported by piso on #lisp)
4547 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4548 with values NIL and :ERROR. (thanks to Milan Zamazal)
4549 * fixed bug 191c: CLOS now does proper keyword argument checking as
4550 described in CLHS 7.6.5 and 7.6.5.1.
4551 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4552 longer raise an error; further, using a list as a for-as-arithmetic
4553 counter now raises a meaningful error.
4554 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4555 now understood by sequence creation functions such as MAKE-SEQUENCE
4557 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4558 a STRING-INPUT-STREAM.
4559 * compiler enhancement: SIGNUM is now better able to derive the type
4561 * type declarations inside WITH-SLOTS are checked. (reported by
4563 * fixed some bugs revealed by Paul Dietz' test suite:
4564 ** incorrect optimization of TRUNCATE for a positive first
4565 argument and negative second.
4566 ** compiler failure in let-convertion during flushing dead code.
4567 ** compiler failure while deriving type of TRUNCATE on an
4568 interval, containing 0.
4569 ** ASH of a negative bignum by a negative bignum count now returns
4571 ** intersection of CONS types now canonicalizes properly, fixing
4572 inconsistencies in SUBTYPEP.
4574 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4575 * incompatible change: The --disable-debugger command line
4576 option now clobbers the debugger at a more fundamental
4577 level, by redefining #'INVOKE-DEBUGGER instead of by
4578 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4579 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4580 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4581 enter the debugger REPL and then suffer recursive errors
4582 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4583 while under the new system, BREAK in --disable-debugger mode
4584 terminates the system just as an unhandled error would.
4585 * fixed compiler performance when processing loops with a step >1;
4586 * bug fix: DOCUMENTATION now retrieves generic function
4587 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4588 support has been systematized, and now supports the methods
4589 specified by ANSI, along with a default method and a method for
4590 slot documentation. (reported by Nathan Froyd)
4591 * bug fix: effective methods associated with a generic function are
4592 no longer cached over a change of that generic function's method
4593 combination. (reported by Andreas Fuchs)
4594 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4595 names a non-existent directory. (thanks to Andreas Fuchs)
4596 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4597 the PPC platform, lead to stack corruption; this has been fixed.
4598 (reported by Rainer Joswig)
4599 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4600 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4601 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4602 arithmetic in general, is now much more reliable on the PPC
4604 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4605 platform now returns the right answer.
4606 * optimization: restored some effective method precomputation in
4607 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4608 precomputation is now tunable.
4609 * optimization: compiler-internal data structure use has been
4610 reviewed, and changes have been made that should improve the
4611 performance of the compiler by about 20%.
4612 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4613 simple-base-strings and simple-bit-vectors is improved.
4614 * optimization: the optimization of 32-bit logical and arithmetic
4615 functions introduced in version 0.8.3 on the x86 has been
4616 implemented on the mips, ppc and sparc platforms; an
4617 implementation of the same facility, but for 64-bit arithmetic,
4618 has been added for the alpha.
4619 * microoptimization: the compiler is better able to make use of the
4620 x86 LEA instruction for multiplication by constants.
4621 * bug fix: in some situations compiler did not report usage of
4622 generic arithmetic in (SPEED 3) policy.
4623 * bug 145b fix: compiler used wrong type specifier while converting
4624 MEMBER-types to numeric.
4625 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4627 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4628 index argument now works properly on the Alpha platform.
4629 * bug fix: floating point exception treatment on the Alpha platform
4631 * bug fix: FILE-POSITION works much better on string input and
4632 output streams. (thanks to Nikodemus Siivola)
4633 * bug fix: many threading/garbage collection symptoms sorted.
4634 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4635 might be pseudo-atomic.
4636 * internal change: Stopping for GC is now done with signals not
4637 ptrace. GC is now done in whichever thread wanted it, instead of
4639 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4641 * bug fix: result form in DO is not contained in the implicit
4643 * incompatible change: ICR structure is changed; the value part of
4644 CONTINUATION is now called LVAR; corresponding functions are
4645 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4646 * added type deriver for ISQRT (thanks to Robert E. Brown).
4647 * bug fix: better support for loading from the command line when an
4648 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4650 * fixed some bugs revealed by Paul Dietz' test suite:
4651 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4652 ** ROUND and FROUND now give the right answer when given very
4653 small float arguments.
4654 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4656 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4657 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4658 ** LCM should return a non-negative integer.
4659 ** PARSE-INTEGER returned the index of a terminator instead of the
4660 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4661 ** PARSE-INTEGER returned an incorrect index being applied to a
4663 ** LCM with two arguments of 0 returns 0 rather than signalling
4665 ** unsigned addition of a 32-bit constant with the high bit set no
4666 longer causes an internal compiler error on the x86.
4667 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4668 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4669 with negative last argument.
4670 ** byte specifiers with zero size and position no longer cause
4671 an error during type derivation.
4672 ** bignum multiplication on the Alpha platform now returns the
4674 * porting: The system now builds on SuSE AMD64, although it still
4675 generates a 32-bit binary.
4676 * .fasl file incompatibility: The fasl file version number has
4677 been incremented (because of the changes to internal compiler
4678 data structures referred to above).
4680 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4681 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4682 more accurately, on the Darwin kernel running on PowerPC hardware.
4683 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4684 * Compiler code deletion notes now signal a condition of type
4685 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4686 an associated MUFFLE-WARNING restart.
4687 * The compiler now performs limited argument count validation of
4688 constant format strings in FORMAT, and where appropriate in ERROR,
4689 CERROR and WARN. (thanks to Gerd Moellmann)
4690 * New ASDF-INSTALL contrib can be used for automatic download and
4691 installation of third-party Lisp code from CCLAN or other sites
4693 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4694 which forces another thread to execute a function supplied by the
4696 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4697 now accept and act upon their :ELEMENT-TYPE keyword argument.
4698 (reported by Martin Atzmueller, Edi Weitz)
4699 * bug fix: FILE-POSITION now accepts position designators up to
4700 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4701 is the greater. (thanks to Patrik Nordebo)
4702 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4703 Kalle Olavi Niemitalo)
4704 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4705 printable. (reported by Eric Marsden)
4706 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4707 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4708 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4709 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4710 (thanks to Stig Sandoe)
4711 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4712 UNREAD-CHAR now correctly includes the unread character in the
4713 target sequence. (thanks to Gerd Moellmann)
4714 * bug fix in threaded builds: the system can now be suspended and
4715 resumed by shell job control with minimal disruption.
4716 * bug fixes in times and timezones >2038AD
4717 * better handling of "where is GNU make?" problem in build scripts
4718 (thanks to Nikodemus Siivola)
4719 * new optimization: inside a named function any reference to a
4720 function with the same name is considered to be a self-reference;
4721 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4722 optimization quality.
4723 * new optimization on x86: logical functions and + now have
4724 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4725 used when the result is truncated to 32 bits.
4726 * VALUES declaration is partially enabled.
4727 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4728 * fixed some bugs revealed by Paul Dietz' test suite:
4729 ** The system now obeys the constraint imposed by
4730 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4731 types form a lattice under type intersection.
4732 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4733 ** ASSOC now ignores NIL elements in an alist.
4734 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4735 and (1+ MOST-POSITIVE-FIXNUM) answers.
4736 ** The addition of a method with invalid qualifiers to a generic
4737 function does not cause an error to be signalled immediately;
4738 a warning is signalled, and the error is generated only on
4739 calling the generic function.
4740 * changed .fasl file version number, in part to add type codes for
4741 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4742 obscure ANSI requirements
4744 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4745 * fixed bug 148: failure to inline-expand a local function left
4746 garbage, confusing the compiler.
4747 * fixed bugs 3cd: structure slot readers perform type check if the
4748 slot can have an invalid value (i.e. it is either not initialized
4749 or can be written with a less specific slot writer).
4750 * bug fix: the compiler now traps array references to elements off
4751 the end of an array; previously, the bounds checking in some
4752 circumstances could go off-by-one.
4753 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4755 * type declarations for array element types now obey the description
4756 on the CLHS page "Declaration TYPE", as per discussions on
4757 sbcl-help around 2003-05-08. This means that a declaration
4758 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4759 declaration, all references to BAR will be asserted or assumed
4760 (with THE, so dependent on compiler policy) to involve objects of
4761 type FOO. Note that no such declaration is implied in
4762 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4763 * declared types of functions from the "Conditions"
4764 chapter. (reported by Paul Dietz)
4765 * bug fix: CERROR accepts a function as its first argument.
4766 * bug fix: NTH an NTHCDR accept a bignum as index
4767 arguments. (reported by Adam Warner)
4768 * optimization: character compare routines now optimize comparing
4769 against a constant character. (reported by Gilbert Baumann)
4770 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4771 argument now works properly on the MIPS platform.
4772 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4773 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4774 declared to have a functional type, does not cause an error
4776 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4777 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4778 * fixed bug: if last continuation of a deleted block has a
4779 destination, this destination should be deleted too. (reported by
4781 * fixed a bug in the bootstrap process: the host compiler's values
4782 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4783 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4784 test case from Patrik Nordebo)
4785 * improved the ability of the disassembler on the PPC platform to
4786 provide helpful disassembly notes.
4787 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4788 the class in more cases than previously.
4789 * bug fix: FILE-POSITION now understands :START and :END for
4790 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4791 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4792 8) data. (thanks to David Lichteblau)
4793 * bug fix: it is possible to add a method to a generic function
4794 without lambda list.
4795 * bug fix: reader failed to signal END-OF-FILE inside an
4796 object representation. (reported by Nikodemus Siivola)
4797 * fixed some bugs revealed by Paul Dietz' test suite:
4798 ** LAST and [N]BUTLAST should accept a bignum.
4799 ** condition slot accessors are methods.
4800 ** (VECTOR NIL) is a subtype of STRING.
4802 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4803 * minor incompatible change: some nonsensical specialized lambda
4804 lists (used in DEFMETHOD) which were previously ignored now signal
4806 * minor incompatible change: the system is now aware of the types of
4807 variables in the COMMON-LISP package, and will signal errors for
4808 most violations of these type constraints (where previously they
4809 were silently accepted).
4810 * minor incompatible change: COMPILE-FILE now uses the freedom
4811 afforded (ANSI 3.2.2.3) to use derived function types for
4812 functions defined in the same file. This also permits the system
4813 to warn on static type mismatches and function
4814 redefinition. (Currently it does not work with high DEBUG level.)
4815 * minor incompatible change: VALUES declaration is disabled.
4816 * When issuing notes, the compiler now signals a condition of type
4817 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4818 restart for use in user handlers. It is expected that the
4819 COMPILER-NOTE condition will eventually become a condition
4820 supertype to a hierarchy of note types, which will then be
4821 handleable in a similar fashion. However, at the moment, no such
4822 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4823 but it's an implementation detail, not a classification for the
4825 * Changes in type checking closed the following bugs:
4826 ** type checking of unused values (192b, 194d, 203);
4827 ** template selection based on unsafe type assertions (192c, 236);
4828 ** type checking in branches (194bc).
4829 * A short form of VALUES type specifier has ANSI meaning (it has
4830 increased the number of situations when SBCL cannot perform type
4832 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4833 keywords or constants is permissible.
4834 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4835 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4836 classes. (thanks to Antonio Martinez)
4837 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4838 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4839 argument to a pretty-print stream. Instead, it leaves any such
4840 operations to DESCRIBE-OBJECT methods.
4841 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4843 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4844 lambda lists. (thanks to David Lichteblau)
4845 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4846 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4847 (thanks to Gerd Moellmann)
4848 * fixed bug 246: increased compilation speed of long
4849 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4851 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4853 * DEFCONSTANT now throws a condition of type
4854 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4855 constant to a non-EQL value; CONTINUE and ABORT restarts
4856 respectively change and preserve the value.
4857 * fixed bug 63: The code walker, part of the implementation of CLOS,
4858 is now better at handling symbol macros.
4859 * bug fix: There is no longer an internal implementation type named
4860 CL:LENGTH. (reported by Raymond Toy)
4861 * bug fix: In macro-like defining macros/special operators the
4862 implicit block does not enclose the lambda list.
4863 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4864 enclosed in parentheses) are not suitable as type specifiers, and
4865 their use properly signals an error now.
4866 * bug fix: An argument count mismatch for a type specifier in code
4867 being compiled no longer causes an unhandled error at compile
4868 time, but signals a compile-time warning.
4869 * fixed simple vector readable printing
4870 * bug fix: DESCRIBE takes more care over whether the class
4871 precedence list slot of a class is bound before accessing it.
4872 (reported by Markus Krummenacker)
4873 * bug fix: FORMATTER can successfully compile pretty-printer format
4874 strings which use variants of the ~* directive inside.
4875 * bug fix: SEARCH now applies its TEST predicate to the elements of
4876 the arguments in the correct order. (thanks to Wolfhard Buss)
4877 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4878 in type inference. (thanks to Robert E. Brown)
4879 * bug fix: Reading in symbols with an explicit package name of ""
4880 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4881 * fixed some bugs revealed by Paul Dietz' test suite:
4882 ** NIL is now allowed as a structure slot name.
4883 ** Arbitrary numbers, not just REALs, are allowed in certain
4884 circumstances in LOOP for-as-arithmetic clauses.
4885 ** Multiple class redefinitions before slot access no longer
4886 causes a type error.
4887 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4888 association between the name and a class.
4889 ** Generic functions with non-standard method-combination and over
4890 five methods all of which return constants no longer return NIL
4891 after the first few invocations. (thanks to Gerd Moellmann)
4892 ** CALL-NEXT-METHOD with no arguments now passes the original
4893 values of the arguments, even in the presence of assignment.
4894 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4896 ** DISASSEMBLE works with closures and funcallable instances.
4897 ** ADD-METHOD now returns the generic function, not the new method.
4898 ** FIND-METHOD signals an error if the lengths of the specializers
4899 is incompatible with the generic function, even if the ERRORP
4901 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4902 which its argument is a member.
4903 ** DEFCLASS only redefines the class named by its class-name
4904 argument if that name is the proper name of the class;
4905 otherwise, it creates a new class.
4906 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4907 of the UNBOUND-SLOT condition to the name of the slot.
4908 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4909 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4910 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4911 SLOT-MAKUNBOUND in the specified fashion.
4913 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4914 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4915 cross-compilation host. As a consequence, we can now bootstrap our
4916 way up to SBCL starting with a bare gcc toolchain and human-readable
4917 source code (first the source to CLISP, then the source to SBCL).
4918 * A contributed module containing a partial implementation of the
4919 simple-streams interface has been included. (thanks to Rudi
4921 * A contributed module implementing the RFC1321 Message Digest
4922 Algorithm, known as MD5, has been included.
4923 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4924 no longer has any effect, as the code controlled by this feature
4925 has been deleted. (As far as we know, no-one has ever built using
4926 this feature, and its semantics were confused in any case).
4927 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4928 work on conditions (as required by the ANSI specification),
4929 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4930 expected behaviour on conditions. Users should note, however,
4931 that such behaviour is not required by the ANSI specification,
4932 and so use of this behaviour may render their code unportable.
4933 * fixed some bugs revealed by Paul Dietz' test suite:
4934 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4936 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4937 ** SXHASH on condition objects no longer returns NIL.
4938 ** :ALLOCATION :CLASS slots are better treated; their values are
4939 updated on class redefinition, and initforms inherited from
4940 superclasses are applied.
4941 ** REMOVE-METHOD returns its generic function argument even when
4942 no method was removed.
4943 ** SHARED-INITIALIZE now initializes the values of the requested
4944 slots, including those with :ALLOCATION :CLASS.
4945 ** ALLOCATE-INSTANCE now works on structure classes defined via
4946 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4948 ** SLOT-EXISTS-P now works on conditions, as well as structures
4950 ** MAKE-LOAD-FORM now has the required methods on
4951 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4952 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4953 keyword, and now implements the SLOT-NAMES argument.
4954 ** methods with &OPTIONAL arguments no longer allow too many
4955 arguments to be passed in the call without error.
4956 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4957 option is consistent with the required arguments of the generic
4958 function lambda list.
4959 * bug fix: REQUIRE accepts a string designator. (Thanks to
4961 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4962 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4963 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4964 * bug fix: The compiler now checks for duplicated variables in macro
4966 * bug fix: SETQ on globals returns the correct value.
4967 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4968 not a COMPILER-ERROR (followed by some other strange error on
4969 choosing the CONTINUE restart).
4970 * bug fix: make.sh and friends are now more consistent in the way that
4971 they look for GNU "make".
4973 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4974 * experimental native threads support (on x86 Linux >=2.4 only).
4975 This is not compiled in by default: you need to add :SB-THREAD to
4976 the target features. See the "Beyond ANSI" chapter of the manual
4978 * fix for longstanding nonANSIism: The old distinction between
4979 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4980 The return value from CL:FIND-CLASS is now a CLOS class, and
4981 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4982 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4983 * An interface to the MetaObject Protocol, as described in Kiczales,
4984 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4985 MIT Press, 1991, is available from the SB-MOP package.
4986 * incompatible change: the SB-PCL package should now be considered
4987 a private implementation detail, and no longer a semi-private MOP
4989 * minor incompatible change: due to rearrangement for threads, the
4990 control stack and binding stack are now allocated at arbitrary
4991 addresses instead of being hardcoded per-port. Users affected by
4992 this probably have to be doing advanced things with shared
4993 libraries, and will know who they are.
4994 * minor incompatible change: Previously, all --eval forms used were
4995 processed with READ before any of them were processed with EVAL.
4996 Now each --eval form is processed with both READ and EVAL before
4997 the next --eval form is processed. (Thus package operations like
4998 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4999 work as the user might reasonably expect.)
5000 * minor incompatible change: *STANDARD-INPUT* is now only an
5001 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5003 * minor incompatible change: Y-OR-N-P is now character-oriented,
5004 not line oriented. Also, YES-OR-NO-P now works without errors.
5005 (thanks to Antonio Martinez)
5006 * sb-aclrepl module improvements: an integrated inspector, added
5007 repl features, and a bug fix to :trace command.
5008 * Known functions, which cannot be open coded by the backend, are
5009 considered to be able to check types of their arguments. (fixing
5010 a bug report by Nathan J. Froyd)
5011 * fixed a bug in computing method discriminating functions: It is
5012 now possible to define methods specialized on classes which have
5013 forward-referenced superclasses. (thanks to Gerd Moellmann)
5014 * fixed evaluation order in optional entries (reported by Gilbert
5016 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5017 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5018 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5019 required-by-AMOP NAME argument, as well as CLASS and
5020 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5021 * fixed bug 20: DEFMETHOD can define methods using names that are
5022 not the proper names of classes to designate class specializers.
5023 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5024 Unix file descriptors, instead of blowing up. (thanks to Antonio
5026 * Garbage collection refactoring: user-visible change is that a
5027 call to the GC function during WITHOUT-GCING will not do garbage
5028 collection until the end of the WITHOUT-GCING. If you were doing
5029 this you were probably losing anyway.
5030 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5031 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5032 TYPEP the latter but not the former.
5033 * The compiler issues a full WARNING for calls to undefined functions
5034 with names from the CL package.
5035 * MAP-INTO for a vector destination is open coded. (reported by
5036 Brian Downing on c.l.l)
5037 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5038 documentation string.
5039 * fixed some bugs revealed by Paul Dietz' test suite:
5040 ** COPY-ALIST now signals an error if its argument is a dotted
5042 ** Condition slots are now accessed more correctly in the presence
5043 of multiple initargs for a given slot.
5044 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5045 exclude restarts of the same name associated with a different
5047 ** DEFCLASS of forward-referenced classes with another
5048 forward-referenced class in the superclasses list no longer
5050 ** Condition slots are now initialized once each, not multiple
5051 times. (thanks to Gerd Moellmann)
5052 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5054 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5055 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5056 arguments contain duplicated elements.
5057 ** RESTART-CASE understands local macros.
5058 ** RESTART-CASE associates exactly its own restarts with a condition.
5059 ** ENDP in safe mode checks its argument to be of type LIST.
5060 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5061 in question is unbound.
5062 ** Optimized MAKE-INSTANCE functions no longer cause internal
5063 assertion failures in the presence of duplicate initargs.
5064 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5065 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5066 propagated even in the ctor optimized implementation of
5068 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5070 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5071 * a better implementation of SXHASH on (simple) bit vectors,
5072 measured both in execution speed and in distribution of results
5073 over the positive fixnums, has been installed. Likewise, a better
5074 implementation of EQUAL for simple bit vectors is now available.
5075 * fixed CEILING optimization for a divisor of form 2^k.
5076 * fixed bug 240 (emitting extra style warnings "using the lexical
5077 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5078 by Antonio Martinez)
5079 * fixed SXHASH, giving different results for NIL depending on type
5080 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5081 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5082 variable. (found by Rolf Wester)
5083 * SBCL does not ignore type declarations for special
5084 variables. (reported by rif on c.l.l 2003-03-05)
5085 * some bug fixes in contrib/sb-aclrepl/
5086 * fixed some bugs revealed by Paul Dietz' test suite:
5087 ** a bug in the CONS type specifier, whereby the CAR and CDR
5088 types got intertwined, has been fixed;
5089 ** the type system is now able to reason about the interaction
5090 between INTEGER and RATIO types more completely;
5091 ** APPEND, [N]REVERSE and NRECONC check that those their
5092 arguments, which must be proper lists, are really so;
5093 ** An array specialized to be unable to hold elements has been
5094 implemented, as required -- yes, really -- by ANSI;
5095 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5096 on malformed property lists;
5098 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5099 * incompatible packaging change: in line with Unix convention,
5100 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5101 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5102 * REQUIRE and PROVIDE are now optionally capable of doing something
5103 useful. See the documentation string for REQUIRE.
5104 * infrastructure for a managed SBCL contrib system: contributed
5105 modules in this release include:
5106 ** the ASDF system definition facility;
5107 ** an interface to the BSD Sockets API;
5108 ** an ACL-like convenience interface to the repl;
5109 (thanks to Kevin Rosenberg)
5110 ** an implementation of ROTATE-BYTE, with efficient implementation
5112 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5113 gives a closer approximation to the right answer than previously.
5114 (thanks to Raymond Toy)
5115 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5116 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5117 optional environment arguments, as required by ANSI.
5118 * fixed bugs in other functions taking environment objects, allowing
5119 calls with an explicit NIL environment argument to be compiled
5121 * fixed bug 228: primary return values from
5122 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5123 COMPILE or FUNCTION.
5124 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5125 :TYPE will no longer signal errors on innocuous objects.
5126 * fixed bug 231b: SETQ is better at respecting type declarations in
5127 the lexical environment.
5128 * fixed a bug in DEFCLASS: classes named by symbols with no or
5129 unprintable packages can now be defined.
5130 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5131 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5132 * fixed compiler failure related to checking types of functions.
5133 (reported by Robert E. Brown)
5134 * the compiler is now much more consistent in its error-checking
5135 treatment of bounding index arguments to sequence functions: in
5136 (SAFETY 3) code, errors will be signalled in almost all cases if
5137 invalid sequence bounding indices are passed to functions defined
5138 by ANSI to operate on sequences.
5139 * fixed a bug in the build procedure: documentation of SBCL-specific
5140 packages is now preserved and available in the final Lisp image.
5141 * lifted FDEFINITION lookup out of loops in the implementation of
5142 many list operations. (thanks to Robert E. Brown)
5143 * fixed a bug in the reader: the #n# reader macro now works for
5144 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5145 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5146 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5147 E. Brown and Tony Martinez respectively)
5148 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5149 SLOT-BOUNDP: in particular, it is now able to optimize them much
5150 better, and is now not vulnerable to having packages renamed.
5151 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5152 always called when a slot is not present in an instance. (thanks
5154 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5155 longer signal an error on unreading a character following EOF on
5156 the previous constituent stream. (thanks to Tony Martinez)
5157 * fixed some bugs revealed by Paul Dietz' test suite:
5158 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5159 not just nonnegative fixnums;
5160 ** the logical bit-array operators such as BIT-AND now accept an
5161 explicit NIL for their "opt-arg" argument (to indicate a
5162 freshly-consed result bit-array);
5163 ** ELT now signals an error on an invalid sequence index in safe
5165 ** the type system is now cleverer about negations of numeric
5166 types, and consequently understands the BIGNUM and RATIO types
5168 ** the type system is now cleverer about the interaction between
5169 INTEGER and RATIO types: while bugs still remain, many more
5170 cases are accurately computed;
5171 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5172 if it is in the last clause;
5173 ** CONSTANTLY now correctly returns a side-effect-free function in
5175 ** DECLARE is no longer treated as a special-operator; in
5176 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5177 * incremented fasl file version number due to the change in the
5178 DEFSTRUCT-SLOT-DESCRIPTION structure.
5180 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5181 * minor incompatible change: code processed by the "interpreter" or
5182 EVAL now has a compilation optimization policy of (DEBUG 2)
5183 (changed from (DEBUG 1)) to improve debuggability of interactive
5184 development, and to allow the use of the debug RETURN command in
5186 * an experimental implementation of the RETURN command for the
5187 debugger has been included. (thanks to Frederik Kuivinen)
5188 * fixed bug 62: constraints were not propagated into a loop.
5189 * fixed bug in embedded calls of SORT (reported and investigated by
5191 * fixed some bugs revealed by Paul Dietz' test suite:
5192 ** printing and reading of arrays with some dimensions having
5193 length 0 (thanks to Gerd Moellmann);
5194 ** BOA constructor with &AUX argument without a default value does
5195 not cause a type error;
5196 ** CONSTANTP now returns true for all self-evaluating objects.
5198 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5199 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5200 accessors that are related by inheritance, as specified in the
5201 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5202 Valtteri Vuorikoski)
5203 * The compiler is now able to inline functions that were defined in
5204 a complex lexical environment (e.g. inside a MACROLET).
5205 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5207 * Support for the upcoming FreeBSD-5.0 release has been included.
5208 (thanks to Dag-Erling Smorgrav)
5209 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5210 effect when it is not in a toplevel context.
5211 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5212 stand a better chance of being correct. (thanks to Gerd
5214 * fixed bug in COERCE, which now signals an error on coercing a
5215 rational to a bounded real type which excludes the expected
5217 * The compiler is now able to derive types more accurately from the
5218 COERCE and COMPILE functions.
5219 * fixed bug 223: functional binding is considered to be constant
5220 only for symbols in the CL package.
5221 * fixed bug 231: SETQ did not check the type of a variable being set
5222 (reported by Robert E. Brown)
5223 * A new optimization for MAKE-INSTANCE has been included, fixing
5224 various bugs (including relating to :ALLOCATION :CLASS slots and
5225 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5227 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5228 ** As required by ANSI, LOOP now disallows anonymous collection
5229 clauses such as COLLECT I in conjunction with aggregate boolean
5230 clauses such as THEREIS (= I 1);
5231 ** LOOP now signals an error when any variable is reused in the
5232 same loop (including the potentially useful construct analogous
5233 to WITH A = 1 WITH A = (1+ A);
5234 ** IT is only a special loop symbol within the first clause of a
5235 conditional loop clause;
5236 ** LOOP with a typed iteration variable over a hashtable now
5237 signals a type error iff it should.
5238 * fixed some other bugs revealed by Paul Dietz' test suite:
5239 ** FILE-STREAM now names the class previously known as FD-STREAM;
5240 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5241 argument) no longer signals an error;
5242 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5243 of the slot symbol, rather than using the current package
5244 ((:CONC-NAME "") continues to intern the slot's name in the
5246 * incremented fasl file version number, because of the incompatible
5247 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5248 of the new implementation of DEFINE-COMPILER-MACRO.
5250 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5251 * Support for building SBCL for MIPS platforms running in
5252 little-endian mode has now been checked in, and basic
5253 functionality on said platforms verified.
5254 * minor incompatible change: PCL now records the pathname of a file
5255 in which methods and the like are defined, rather than its
5257 * minor incompatible change: TRUENAME now considers the truename of
5258 a file naming a directory to be the pathname with :DIRECTORY
5259 component indicating that directory.
5260 * minor incompatible change: a NAMED clause in the extended form of
5261 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5262 reason for the previous behaviour is unclear.
5263 * more systematization and improvement of CLOS and MOP conformance
5264 in PCL (thanks to Gerd Moellman and Pierre Mai):
5265 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5267 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5268 primary methods with no specializers;
5269 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5271 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5272 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5273 FORWARD-REFERENCED-CLASSes; error reporting on
5274 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5276 ** SXHASH on CLOS instances now uses a slot internal to the
5277 instance to return different numbers on distinct instances,
5278 while preserving the same return value through invocations of
5280 ** DEFMETHOD signals errors when methods with longer incongruent
5281 lambda lists are added to generic functions;
5282 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5283 CLASS, as specified in AMOP;
5284 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5285 on the order returned by the primary method for classes of
5286 class STANDARD-CLASS;
5287 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5288 * fixed some bugs shown by Paul Dietz' test suite:
5289 ** DOLIST puts its body in TAGBODY;
5290 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5292 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5293 value producing form;
5294 ** if more variables are given to PROGV than values, extra
5295 variables are bound and made to have no value;
5296 ** NSUBSTITUTE on list arguments gets the right answer with
5298 ** ELT signals an error of type TYPE-ERROR when the index argument
5299 is not a valid sequence index;
5300 ** LOOP signals (at macroexpansion time) an error of type
5301 PROGRAM-ERROR when duplicate variable names are found;
5302 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5303 ** FUNCALL of special-operators now cause an error of type
5305 ** PSETQ now works as required in the presence of side-effecting
5306 symbol-macro places;
5307 ** NCONC accepts any object as its last argument;
5308 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5310 ** loop-for-as-package does not require a package to be explicitely
5312 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5314 * fixed bug 166: compiler preserves "there is a way to go"
5315 invariant when deleting code.
5316 * fixed bug 172: macro lambda lists with required arguments after
5317 &REST arguments now cause an error to be signalled. (thanks to
5319 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5320 bug. (thanks to Matthew Danish)
5321 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5323 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5324 arguments are lexically rebound. (thanks to Gerd Moellmann and
5326 * fixed bug 194: error messages are now more informative when there
5327 is no primary method applicable in a call to a generic
5328 function. (thanks to Gerd Moellmann)
5329 * fixed bug in command line argument checking (thanks to Julian
5331 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5332 (thanks to Matthew Danish)
5333 * incremented fasl file version number, because of the
5334 SXHASH-related changes in the layout of CLOS data structures
5336 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5337 * minor incompatible change: The runtime (the Unix executable named
5338 "sbcl") is now much pickier about the .core files it will load.
5339 Essentially it now requires .core files to descend from the same
5340 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5341 as the runtime does. (The intent is to prevent the crashes which
5342 can occur, and which can even be reported as mysterious failures,
5343 when people patch the sources or change the build parameters
5344 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5345 sbcl and .core files.)
5346 * fixed bug: VALUES-LIST is no longer optimized away.
5347 * fixed bug 142: The FFI conversion of C string values to Lisp
5348 string values no longer conses excessively. (thanks to Nathan
5349 Froyd porting Raymond Toy's fix to CMU CL)
5350 * began to systematize and improve MOP conformance in PCL (thanks to
5351 Nathan Froyd, Gerd Moellman and Pierre Mai):
5352 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5354 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5355 ** FINALIZE-INHERITANCE is now called on class finalization;
5356 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5357 argument precedence order.
5358 * fixed bug 202: The compiler no longer fails on functions whose
5359 derived types contradict their declared type.
5360 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5361 so it can be non-toplevel.
5362 * The fasl file version number has changed (because of the new
5363 implementation of DEFMACRO).
5364 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5365 safe code, that any length requirement by their type-specifier
5366 argument is valid. The exceptions to this are described in bug
5368 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5369 functions now check the types of their inputs as required by ANSI.
5370 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5371 introduced symbol is DECLAREd to be SPECIAL.
5372 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5373 * fixed bug: :COUNT argument to sequence functions may be negative
5374 * fixed bug: body of DO-SYMBOLS may contain declarations
5375 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5376 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5377 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5378 symbol macro only once
5379 * fixed printing of call frame when argument list is unavailable
5380 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5381 * compiler no longer signals WARNING on unknown keyword
5384 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5385 * A beta-quality port to the mips architecture running Linux,
5386 based on the old CMUCL backend, has been made. It has been tested
5387 on a big-endian kernel, and works sufficiently well to be able to
5388 rebuild itself; it has not been tested in little-endian mode.
5389 * fixed an inconsistency between gencgc.c and purify.c which made
5390 dumping/loading .core files unreliable
5391 * fixed bug 120a: The compiler now deals correctly with IFs where
5392 the consequent is the same as the alternative, instead of
5393 misderiving the return type. (thanks to Alexey Dejneka)
5394 * fixed bug 113: Logical pathnames are now dumpable (the logical
5395 host is resolved at load-time, throwing an error if it is not
5397 * fixed bug 174: FORMAT's error message is slightly clearer when a
5398 non-printing character is used in a format directive.
5399 * fixed several bugs in compiler checking of type declarations, i.e.
5400 violations of the Python "declarations are assertions" principle
5401 (thanks to Alexey Dejneka)
5402 * fixed several bugs in PCL's error checking (thanks to Gerd
5404 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5406 * fixed bug in compilation of functions as first class values
5407 (thanks to Antonio Martinez-Shotton)
5408 * The compiler's handling TYPE-ERRORs which it can prove will
5409 inevitably happen at runtime has been cleaned up and corrected
5410 in several ways. (thanks to Alexey Dejneka)
5411 * improved argument type checking for various basic arithmetic
5412 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5413 lavished on them in the past that they can be compiled in many
5414 ways in different special cases
5415 * fixed bug 181: compiler checks validity of user supplied type
5417 * cleaned up code flushing in optimization: Function calls which
5418 should signal errors for safety purposes (e.g. which ANSI says
5419 should signal errors when their arguments are of incorrect type)
5420 are no longer optimized away.
5421 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5422 * incremented fasl file version number, because changes in the
5423 implementation of sequence functions like COERCE caused
5424 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5425 in old inline expansions) to become undefined. (Actually these
5426 changes were later undone, so we might very well be binary
5427 compatible with 0.7.7 after all, but leaving the version number
5428 incremented seemed like the simplest and most conservative
5431 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5432 * An alpha-quality port to the parisc architecture running Linux,
5433 based on the old CMUCL backend, has been made. This, even more so
5434 than the other backends, should be considered still a work in
5435 progress; known problems include that the Linux kernel in 64-bit
5436 mode does not propagate the correct sigcontext structure to
5437 userspace, and consequently SBCL on a parisc64 kernel will not
5439 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5440 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5441 suppressed.) Also now that the compiler is looking at declarations
5442 in the environment, it checks optimization declarations as well,
5443 and suppresses inlining when (> DEBUG SPEED).
5444 * More fixes have been made to treatment of floating point exception
5445 treatment and other Unix signals. In particular, floating point
5446 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5447 * The detection and handling of control stack exhaustion (infinite
5448 or very deeply nested recursion) has changed. Stack exhaustion
5449 detection is now done by write-protecting pages at the OS level
5450 and applies at all optimization settings; when found, a
5451 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5452 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5453 be caught using IGNORE-ERRORS.
5454 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5455 correctly when transforming recursive LABELS functions to LETs.
5456 (thanks to Alexey Dejneka)
5457 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5458 that are names of constants or global variables.
5459 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5460 alien routines with docstrings.
5461 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5462 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5464 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5465 (thanks to Eric Marsden)
5466 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5467 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5468 * Bug fix: The SPARC backend can now compile functions involving
5469 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5470 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5471 to a functions expecting a PATHNAME-DESIGNATOR.
5472 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5473 lambda lists. (thanks to Alexey Dejneka)
5474 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5475 functions so that EXPORTing the name of the class doesn't cause
5476 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5477 to Antonio Martinez for reporting this)
5478 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5479 constant-folded without failing an assertion. (thanks to Einar
5480 Floystad Dorum for reporting this)
5481 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5482 types are now dealt with more correctly by the compiler.
5483 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5484 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5485 behaviour analogous to RENAME-FILE. This puts its behaviour more
5486 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5488 * The fasl file version number has changed again. (because of the
5489 bug fix involving the names of PCL MAKE-INSTANCE functions)
5491 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5492 * bug fix: Floating point exceptions are treated much more
5493 consistently on the x86/Linux and PPC/Linux platforms.
5494 * Array initialization with :INITIAL-ELEMENT is now much faster for
5495 cases when the compiler cannot open code the array creation, but
5496 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5497 array accesses have also seen a speed increase.
5498 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5499 specified. (This was at the root of some bad interactions between
5500 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5502 * bug fix: Internal error arguments for undefined functions are now
5503 computed correctly on the PPC/Linux platform.
5504 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5505 Raymond Toy's patch for CMU CL)
5506 * Support for the Solaris 9 operating environment has been included
5507 (thanks to Daniel Merritt)
5508 * A very ugly but hopefully complete draft of the missing FFI chapter
5509 of the manual has been created by reformatting the corresponding
5510 CMU CL manual chapter into (currently very ugly and incoherent)
5511 DocBook and bringing it up to date for SBCL behavior. Thus, the
5512 manual is now essentially complete, at least by my extreme
5513 once-and-only-once standards, whereby it's acceptable to refer to
5514 the doc strings of SB-EXT functions as the primary documentation.
5515 * The fasl file version number has changed again, due to cleanup of
5516 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5517 is no longer a static symbol.)
5519 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5520 * SBCL now builds with OpenMCL (version 0.12) as the
5521 cross-compilation host; also, more progress has been made toward
5522 bootstrapping under CLISP.
5523 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5525 * bug 158 fixed: The compiler can now deal with integer loop
5526 increments different from 1; fixing this turned out also to fix
5528 * bug 169 fixed: no more bogus warnings about using lexical bindings
5529 despite the presence of perfectly good SPECIAL declarations (thanks
5530 to David Lichteblau)
5531 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5532 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5533 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5535 * bug 180 fixed: Method combination specifications no longer ignore
5536 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5537 * bug fix: Structure type predicate functions now check their argument
5538 count as they should.
5539 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5540 correctly. (thanks to Pierre Mai)
5541 * minor incompatible change: The --noprogrammer option is deprecated
5542 in favor of the new --disable-debugger option, which is very similar.
5543 (The major difference is that it takes effect at a slightly different
5544 time at startup, causing handling of errors in --sysinit and
5545 --userinit files will be affected differently.) The
5546 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5547 been added to allow this functionality to be controlled from ordinary
5548 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5549 maintainers, who might want to run non-interactive scripts to
5550 build SBCL cores which will later be used interactively.)
5551 * minor incompatible change: The LOAD function no longer, when given
5552 a wild pathname to load, loads all files matching that pathname.
5553 Instead, an error of type FILE-ERROR is signalled.
5555 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5556 * bug 147 fixed: The compiler preserves its block link/count
5557 invariants more correctly now so that it doesn't crash. (thanks
5559 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5561 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5562 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5563 no-value-for-this-character as NIL (as specified by ANSI).
5564 * HOST-NAMESTRING on physical pathnames now returns a string that is
5565 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5566 (thanks to Christophe Rhodes)
5567 * The Alpha port handles icache flushing more correctly. (thanks to
5569 * More progress has been made toward bootstrapping under CLISP. (thanks
5570 to Christophe Rhodes)
5571 * The fasl file format has changed again, because dynamic loading
5572 on OpenBSD (which has non-ELF object files) motivated some cleanups
5573 in the way that foreign symbols are transformed and passed around.
5574 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5575 is no longer treated as whitespace by the reader, but instead as
5576 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5577 |A
\7fB|, instead of A as it used to.
5579 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5580 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5581 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5582 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5583 this as of 0.7.1.45, but was left out of the previous news section
5584 (thanks to Dan Barlow)
5585 * SBCL now runs on the Solaris operating system on SPARC architectures
5586 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5587 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5588 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5589 * SPARC backend cleanups, allowing builds of cores optimized for V8
5590 and V9 SPARCS, and also emission of code targeted to a particular
5591 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5593 * SBCL is closer to bootstrapping under CLISP, thanks to various
5594 fixes by Christophe Rhodes.
5595 * The fasl file format has changed again, to allow the compiler's
5596 INFO database to support symbol macros.
5597 * The user manual (in doc/) is formatted into HTML more nicely.
5598 (thanks to coreythomas)
5599 * The system is smarter about SUBTYPEP relationships, especially
5600 those involving NOT types (including types such as ATOM which are
5601 represented internally using NOT types). Thus SUBTYPEP is less
5602 likely to return (VALUES NIL NIL) in general, and in particular
5603 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5605 * The fasl file format has changed again, because the internal
5606 representation of types now includes a new slot to support the new
5607 SUBTYPEP-of-NOT-types logic.
5608 * (not a change in the main branch of SBCL, but a related prototype
5609 which can hopefully be merged into the main branch of SBCL in the
5610 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5611 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5612 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5613 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5614 dispatch macro character combinations. (thanks to Alexey Dejneka)
5615 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5616 that superficially look like logical namestrings correctly.
5617 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5619 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5620 default supplied-p) for &optional and &key arguments. (thanks to
5623 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5624 * incompatible change: The compiler is now less aggressive about
5625 tail call optimization, doing it only when (> SPACE DEBUG) or
5626 (> SPEED DEBUG). (This is an incompatible change because there are
5627 programs which relied on the old CMU-CL-style behavior to optimize
5628 away their unbounded recursion which will now die of stack overflow.)
5629 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5630 for non-GENCGC systems has been increased to 20M (since that
5631 seems much closer to the likely performance optimum for modern
5632 systems than the old 4M value was)
5633 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5634 and *DEBUG-PRINT-LEVEL*
5635 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5636 of CMU CL's support for SPARC, and various endianness and other
5637 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5638 * new syntactic sugar for the Unix command line: --load foo.bar is now
5639 an alternate notation for --eval '(load "foo.bar")'.
5641 ** The system now detects stack overflow and handles it gracefully,
5642 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5643 optimization settings. (This is a good thing in general, and
5644 its introduction in this version should be particularly timely
5645 for anyone whose code fails because of suppression of tail
5647 ** The system now hunts for the C variable "environ" in a more
5648 devious way, to avoid segfaults when the C library version differs
5649 between compile time and run time. (thanks to Christophe Rhodes)
5650 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5651 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5652 ** The compiler no longer issues bogus style warnings for undefined
5653 classes in the same source file as the DEFCLASSes which defined
5654 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5656 ** fixes in CONDITION class precedence list for undefined function
5657 errors (thanks to Alexei Dejneka)
5658 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5659 correctly. (thanks to Dan Barlow)
5660 ** portability fixes aiming at bootstrapping under CLISP (thanks
5661 to Dave McDonald and Christophe Rhodes)
5662 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5663 ** fixes in type translation and and type inference (thanks to
5665 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5666 ** various fixes in the new ports (thanks to Dan Barlow)
5667 * several changes related to debugging:
5668 ** suppression of tail recursion, as noted above
5669 ** stack overflow detection, as noted above
5670 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5671 is now the default. (For some time encapsulation has been more
5672 reliable than the breakpoint-based :ENCAPSULATE NIL
5673 implementation, at least on X86 systems; and I just noticed that
5674 encapsulation also seems closer to the spirit of the ANSI
5677 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5679 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5680 up properly again. (There was a packaging bug in 0.7.0 which
5681 left their definitions in SB-SYS::LOAD-FOREIGN and
5682 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5683 vital for most things which interface to C-level interfaces,
5684 like extensions working with sockets or databases or
5685 Perl-compatible regexes or whatever, and the need to fix
5686 this bug is the main reason that 0.7.1 was released so
5688 ** DEFGENERIC is now choosier about the methods it redefines, so that
5689 reLOADing a previously-LOADed file containing DEFGENERICs does
5690 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5691 cycle now works as it should. (thanks to Alexey Dejneka)
5692 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5693 fixed by Christophe Rhodes. (He actually submitted this patch
5694 months ago, and I delayed until after 0.7.0.)
5695 ** Bug 111 (internal compiler confusion about runtime checks on
5696 FUNCTION types) was fixed by Alexey Dejneka.
5697 * Some internal cleanups (getting rid of variables which aren't
5698 needed now that the byte interpreter is gone) caused the fasl
5699 file format number to change again.
5701 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5702 * major incompatible change: The default fasl file extension, i.e. the
5703 default extension for files produced by COMPILE-FILE, has changed
5704 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5706 ** There are many changes in the implementation of the compiler.
5707 SBCL is now essentially a compiler-only implementation of ANSI
5708 Common Lisp. EVAL still "interprets" a few special cases, but
5709 almost all the interesting cases are handled by creating
5710 a LAMBDA expression, calling COMPILE on it, then calling
5711 FUNCALL on the result.
5712 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5713 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5714 Since the code is newer, there might still be some new bugs
5715 (though not as many as before Martin Atzmueller's fixes:-). But
5716 the new code is substantially simpler and clearer, and hopefully
5717 any remaining bugs will be simpler, less fundamental, and more
5718 fixable then the bugs in the old code.
5719 ** The revised compiler is still a little unsteady on its feet.
5721 *** The debugging information it produces (particularly the names
5722 of FUNCTION objects) is sometimes much less useful than what
5723 the old compiler produced.
5724 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5725 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5726 within a MACROLET) has been temporarily weakened.
5727 ** There are new compiler optimizations for various functions:
5728 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5729 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5730 *** the math functions TRUNCATE, FLOOR, and CEILING
5731 *** the function-of-all-trades COERCE
5732 Mostly these should be transparent, but there's one
5733 potentially-annoying problem (bug 117): when the compiler
5734 inline-expands a function and does type analysis on the result,
5735 it can create control paths which have type mismatches, and
5736 when it can't prove that those control paths aren't taken,
5737 it will issue WARNINGs about the type mismatches. This is
5738 a particular problem in practice for the new sequence functions.
5739 It's not clear how this should be fixed, and for now, a
5740 workaround is given in the entry for 117 in the BUGS file.
5741 ** (Because of the interaction between the two previous items --
5742 occasional inlining problems and new inline expansions -- some
5743 of the new sequence function optimizations won't really kick in
5744 completely until debugging information, and then inlining, are
5745 straightened out in some future version.)
5746 * minor incompatible changes:
5747 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5748 DIRECTORY no longer implicitly promotes NIL slots of its
5749 pathname argument to :WILD. In particular, when you ask for the
5750 contents of a directory (which you used to be able to do without
5751 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5752 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5753 ** changes in behavior that ANSI explicitly defines to be
5754 implementation dependent:
5755 *** The new compiler-only implementation still conforms with ANSI,
5756 but acts a little different than before. Besides the obvious
5757 changes in performance tradeoffs (that the cost per form passed
5758 to EVAL has gone up, and the cost per form executed by EVAL
5759 has gone down), the behavior of the system changes a little
5760 because there are no longer any interpreted function objects.
5761 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5762 e.g. doing COMPILE on the output of interactive DEFUN is
5764 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5766 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5767 has changed from (:CL) to NIL.
5768 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5769 e.g. #\Newline and #\Tab, don't have names specified in the
5770 ANSI Common Lisp standard, is now based on their ASCII symbolic
5771 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5772 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5773 are no longer used for output.
5774 ** changes in internal implementation constants:
5775 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5776 4 million. (If your application spends a lot of time GCing and
5777 you have a lot of RAM, you might want to experiment with
5778 increasing it even more.)
5779 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5780 However, almost all old code should still continue to work without
5781 immediate update, as SB-C-CALL is now a (deprecated) nickname
5783 ** Old operator names in the style DEF-FOO are now deprecated in
5784 favor of new corresponding names DEFINE-FOO, for consistency with
5785 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5786 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5787 internal symbols, but a few supported extensions like
5788 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5789 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5790 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5791 etc. as you get deeper into recursive calls to the debugger
5792 command loop, instead of the old "5]", "5]]", "5]]]"
5793 sequence. (I was motivated to do this when squabbles between
5794 ILISP and SBCL left me very deeply nested in the debugger. In the
5795 short term, this change will probably provoke more ILISP/SBCL
5796 squabbles, but hopefully it will be an improvement in the long run.)
5797 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5798 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5799 function, since declaiming return types involving aliens is
5800 (1) annoyingly messy to do by hand and (2) vital to efficient
5801 compilation of code which calls such functions.
5802 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5803 longer reexported by the SB-EXT package. They're solely useful
5804 for alien code, so it seems more logical that you should get
5805 them from the SB-ALIEN package, not in SB-EXT.
5806 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5807 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5808 features. Instead, the code that they used to control is always
5809 built into the system.
5810 * many other bug fixes
5811 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5812 advantage of the new EVAL-WHEN stuff and to clean them up in
5813 general, and they are now more ANSI-compliant in a number of
5814 ways. Martin Atzmueller is responsible for a lot of this.
5815 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5817 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5818 *** correct ERROR type for various file operations
5819 *** some fixes for Lisp streams
5820 *** DEFMETHOD syntax checking
5821 *** changing old weird representation of debug information as
5822 strings (which, among their other deficiencies, don't transform
5823 correctly when you rename packages, and don't change their
5824 print representation when you change things like *PACKAGE*
5825 and *PRINT-LENGTH*) to symbols and lists of symbols
5826 He also made several improvements and fixed several bugs in DESCRIBE.
5827 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5829 *** misbehavior of WRITE-STRING/WRITE-LINE
5830 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5831 and several other LOOP problems as well
5832 *** DIRECTORY when similar filenames are present
5833 *** DEFGENERIC with :METHOD options
5834 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5835 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5836 *** argument ordering in FIND with :TEST option
5837 *** mishandled package designator argument in APROPOS-LIST
5838 *** various problems in the backquote readmacro
5839 *** a bug in APROPOS
5840 *** probably some others that I'm not describing very well here,
5841 since the CVS log documents them by reference to sbcl-devel
5842 messages, and the SourceForge archives aren't working well.:-(
5843 ** Dan Barlow improved the Alpha port (and is making progress on the
5844 PPC port, for those of you who think different).
5845 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5846 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5847 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5848 continues to work on the SPARC port (for those of you in a position
5849 to look down upon our little PC-compatible boxes from a great height).
5850 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5851 and uses that copy, rather than the current dynamic value, when
5852 it's trying to decide whether to truncate output. Thus e.g.
5853 (let ((*print-lines* 50))
5854 (pprint-logical-block (stream nil)
5856 (let ((*print-lines* 8))
5857 (print (aref possiblybigthings i) stream)))))
5858 should now truncate the logical block only at 50 lines, instead of
5859 often truncating it at 8 lines, as it did before.
5860 * The doc/cmucl/ directory, containing old CMU CL documentation
5861 from the time of the fork, is no longer part of the base system.
5862 SourceForge has shut down its anonymous FTP service, and with it
5863 my original plan for distributing the old CMU CL documentation
5864 there. For now, if you need these files you can download an old
5865 SBCL source release and extract them from it.
5866 * The fasl file version number changed again, for dozens of reasons,
5867 some of which are apparent above.
5869 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5870 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5871 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5872 patch, so that DISASSEMBLE output is much nicer.
5873 * The code in the SB-PROFILE package now seems reasonably stable.
5874 I still haven't decided what the final interface should look like
5875 (I'd like PROFILE to interact cleanly with TRACE, since both
5876 facilities use function encapsulation) but if you have a need
5877 for profiling now, you can probably use it successfully with
5878 the current CMU-CL-style interface.
5879 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5880 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5881 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5882 link now returns the dangling link itself, and for similar
5883 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5884 link itself. (In these cases the old code signalled an error and
5885 looped endlessly, respectively.) Thus, DIRECTORY now works even
5886 in the presence of dangling and cyclic symbolic links.
5887 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5888 is now a supported extension again, since the consensus on
5889 sbcl-devel was that it can be useful for ordinary development
5890 work, not just for debugging SBCL itself.
5891 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5892 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5893 that currently-defined functions might be redefined later with
5894 different return types.
5895 * Hash tables can be printed readably, as inspired by CMU CL code
5896 of Eric Marsden and SBCL code of Martin Atzmueller.
5897 * better error handling in CLOS method combination, thanks to
5898 Martin Atzmueller porting Pierre Mai's CMU CL patches
5899 * more overflow fixes for >16Mbyte I/O buffers
5900 * A bug in READ has been fixed, so that now a single Ctrl-D
5901 character suffices to cause end-of-file on character streams.
5902 In particular, now you only need one Ctrl-D at the command
5903 line (not two) to exit SBCL.
5904 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5906 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5907 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5908 does the right thing.
5909 * The implementation of some type tests, especially for CONDITION
5910 types, is now tidier and maybe faster, due to CMU CL code
5911 originally by Douglas Crosher, ported by Martin Atzmueller.
5912 * Some math functions have been fixed, and there are new
5913 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5914 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5915 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5916 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5917 likely to be built into sbcl-0.7.0.)
5918 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5919 CL, ported to SBCL by Martin Atzmueller)
5920 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5921 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5922 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5923 * There's a new slam.sh hack to shorten the edit/compile/debug
5924 cycle for low-level changes to SBCL itself, and a new
5925 :SB-AFTER-XC-CORE target feature to control the generation of
5926 the after-xc.core file needed by slam.sh.
5927 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5928 COMPILE-FILE is no longer supported, so that now every function
5929 gets an entry point, so that block compilation looks a little
5930 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5931 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5932 returns the number of bytes consed since the system started,
5933 rather than the number consed since the first time the function
5934 was called. (The new definition parallels ANSI functions like
5935 CL:GET-INTERNAL-RUN-TIME.)
5936 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5937 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5938 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5939 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5940 * Fasl file version numbers are now independent of the target CPU,
5941 since historically most system changes which required version
5942 number changes have affected all CPUs equally. Similarly,
5943 the byte fasl file version is now equal to the ordinary
5946 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5947 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5948 is no longer recognized. I apologize for this, because it was
5949 listed in SB-EXT as a supported extension, but I found that
5950 its existing behavior was poorly specified, as well as incorrectly
5951 specified, and it looked like too much of a mess to straighten it
5952 out. I have enough on my hands trying to get ANSI stuff to work..
5953 * many patches ported from CMU CL by Martin Atzmueller, with
5954 half a dozen bug fixes in pretty-printing and the debugger, and
5955 half a dozen others elsewhere
5956 * fixed bug 13: Floating point infinities are now supported again.
5957 They might still be a little bit flaky, but thanks to bug reports
5958 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5959 as flaky as they were.
5960 * The --noprogrammer command line option is now supported. (Its
5961 behavior is slightly different in detail from what the old man
5962 page claimed it would do, but it's still appropriate under the
5963 same circumstances that the man page talks about.)
5964 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5965 are now supported, and enabled by default. Thus, the compiler can
5966 handle many floating point and complex operations much less
5967 inefficiently. (Thus e.g. you can implement a complex FFT
5969 * The compiler now detects type mismatches between DECLAIM FTYPE
5970 and DEFUN better, and implements CHECK-TYPE more correctly, and
5971 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5972 thanks to patches from Martin Atzmueller.
5973 * various fixes to make the cross-compiler more portable to
5974 ANSI-conforming-but-different cross-compilation hosts (notably
5975 Lispworks for Windows, following bug reports from Arthur Lemmens)
5976 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5977 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5978 fixed thanks to Pierre Mai's CMU CL patches.
5979 * fixes to keep the system from overflowing internal counters when
5980 it tries to use i/o buffers larger than 16M bytes
5981 * fixed bug 45a: Various internal functions required to support
5982 complex special functions have been merged from CMU CL sources.
5983 (When I was first setting up SBCL, I misunderstood a compile-time
5984 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5985 * improved support for type intersection and union, fixing bug 12
5986 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5987 more obscure bugs as well
5988 * some steps toward byte-compiling non-performance-critical
5989 parts of the system, courtesy of patches from Martin Atzmueller
5990 * Christophe Rhodes has made some debian packages of sbcl at
5991 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5992 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5993 stable, but are nonetheless usable. When he's ready, I'd be happy
5994 to add them to the SourceForge "File Releases" section. (And if
5995 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5996 * new fasl file format version number (because of changes in
5997 internal representation of (OR ..) types to accommodate the new
5998 support for (AND ..) types, among other things)
6000 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6001 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6003 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6005 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6006 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6007 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6008 * DESCRIBE now works on structure objects again.
6009 * Most function call argument type mismatches are now handled as
6010 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6011 know whether the function will be redefined before the call is
6012 executed. (The compiler could flag local calls with full WARNINGs,
6013 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6014 it doesn't keep track of enough information to know whether calls
6015 are local in this sense.)
6016 * Compiler output is now more verbose, with messages truncated
6017 later than before. (There should be some supported way for users
6018 to override the default verbosity, but I haven't decided how to
6019 provide it yet, so this behavior is still controlled by the internal
6020 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6021 src/compiler/ir1util.lisp.)
6022 * Fasl file format version numbers have increased again, because
6023 support for the Gray streams extension changes the layout of the
6024 system's STREAM objects.
6025 * The Gray subclassable streams extension now works, thanks to a
6026 patch from Martin Atzmueller.
6027 * The full LOAD-FOREIGN extension (not just the primitive
6028 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6029 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6030 but like most other programs, it defaults to copying the Unix
6031 environment from the original process instead of starting the
6032 new process in an empty environment.
6033 * Extensions which manipulate the Unix environment now support
6034 an :ENVIRONMENT keyword option which doesn't smash case or
6035 do other bad things. The CMU-CL-style :ENV option is retained
6036 for porting convenience.
6037 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6038 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6040 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6042 * A patch from Martin Atzmueller seems to have solved the SIGINT
6043 problem, and as far as we know, signal-handling now works cleanly.
6044 (If you find any new bugs, please report them!)
6045 * The system no longer defaults Lisp source file names to types
6046 ".l", ".cl", or ".lsp", but only to ".lisp".
6047 * The compiler no longer uses special default file extensions for
6048 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6049 seems to expect a single default extension for all compiled code,
6050 and there's no compelling reason to try to stretch the standard
6051 to allow two different extensions.) Instead, byte-compiled files
6052 default to the same extension as native-compiled files.
6053 * Fasl file format version numbers have increased again, because
6054 a rearrangement of internal implementation packages made some
6055 dumped symbols in old fasl files unreadable in new cores.
6056 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6057 many fewer weird special cases.
6058 * Bug #17 (differing COMPILE-FILE behavior between logical and
6059 physical pathnames) has been fixed, and some related misbehavior too,
6060 thanks to a patch from Martin Atzmueller.
6061 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6062 by Tim Moore, ported to SBCL by Martin Atzmueller.
6063 * Martin Atzmueller fixed several filesystem-related problems,
6064 including bug #36, in part by porting CMU CL patches, which were
6065 written in part by Paul Werkowski.
6066 * More compiler warnings in src/runtime/ are gone, thanks to
6067 more patches from Martin Atzmueller.
6068 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6071 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6073 * DESCRIBE now works on CONDITION objects.
6074 * The debugger now handles errors which arise when trying to print
6075 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6077 * The build system now uses an additional file, customize-target-features.lisp,
6078 to allow local modifications to the target *FEATURES* list. (The point of
6079 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6080 debugging features enabled, without having to worry about propagating it
6081 into everyone's system when I do a "cvs update".) When no
6082 customize-target-features.lisp file exists, the target *FEATURES* list
6083 should be constructed the same way as before.
6084 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6085 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6086 warn about behavior which is undefined under the ANSI spec. Note: This
6087 is specified by ANSI, but it's not very popular with programmers.
6088 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6089 macro in the SBCL sources for an example of a workaround which you
6090 might use to make portable ANSI-standard code which does what you want.
6091 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6092 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6093 when it's used as a non-toplevel form. (This is required in order
6094 to implement the DEFCONSTANT-EQX macro.)
6095 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6096 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6097 funny things, due to bugs in the implementation of EVAL-WHEN
6098 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6099 non-toplevel DEFCONSTANTs are uncommon.)
6100 * The core file version number and fasl file version number have been
6101 incremented, because the old noncompliant DEFCONSTANT behavior involved
6102 calling functions which no longer exist, and because I also took the
6103 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6104 * fixed bug 1 (error handling before read-eval-print loop starts), and
6105 redid debugger restarts and related debugger commands somewhat while
6107 ** The QUIT debugger command is gone, since it did something
6108 rather different than the SB-EXT:QUIT command, and since it never
6109 worked properly outside the main toplevel read/eval/print loop.
6110 Invoking the new TOPLEVEL restart provides the same functionality.
6111 ** The GO debugger command is also gone, since you can just invoke
6112 the CONTINUE restart directly instead.
6113 ** The TOP debugger command is also gone, since it's redundant with the
6114 FRAME 0 command, and since it interfered with abbreviations for the
6116 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6118 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6119 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6120 some porting work by Martin Atzmueller)
6121 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6122 with a boatload of patches which he ported to SBCL. Now that those
6124 ** The system tries to make sure that its low-priority messages
6125 are prefixed by semicolons, to help people who like to use
6126 syntax highlighting in their ILISP buffer. (This patch
6127 was originally due to Raymond Toy.)
6128 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6129 patches originally written by Raymond Toy.
6130 ** The compiler understands coercion between single-value and
6131 multiple-VALUES type expressions better, getting rid of some very
6132 weird behavior, thanks to patches originally by Robert MacLachlan
6133 and Douglas Crosher.
6134 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6135 lambda lists, thanks to a patch originally by Pierre Mai.
6136 ** The system no longer bogusly warns about "abbreviated type
6138 ** The compiler gets less confused by inlining and RETURN-FROM,
6139 thanks to some patches originally by Tim Moore.
6140 ** The system no longer hangs when dumping circular lists to fasl
6141 files, thanks to a patch originally from Douglas Crosher.
6142 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6143 undefined function error.
6144 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6145 in structure slot initforms) for now, documented workaround instead:-|
6146 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6147 * fixed bug 5: added stubs for various Gray stream functions called
6148 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6149 installed, at least appropriate type errors are generated
6150 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6151 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6152 consistently in DEFMETHOD forms.
6153 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6154 it doesn't seem to affect SBCL after all
6155 * The C runtime system now builds with better optimization and many
6156 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6158 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6160 * The system is now under CVS at SourceForge (instead of the
6161 CVS repository on my home machine).
6162 * The new signal handling code has been tweaked to treat register
6163 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6164 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6165 downstream, e.g. in debug-int.lisp, has implicit dependencies
6166 on the unsignedness of integer representation of machine words,
6167 and that caused the system to bomb out with infinite regress
6168 when trying to recover from type errors involving signed values,
6169 e.g. (BUTLAST '(1 2 3) -1).)
6170 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6171 (This was one of the bugs Peter Van Eynde reported back in July.)
6172 * The system now uses code inspired by Colin Walters' O(N)
6173 implementation of MAP (from the cmucl-imp@cons.org mailing
6174 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6175 inline the MAP operation, and there is more than one
6176 sequence argument to the MAP call (so that it can't just
6177 do ETYPECASE once and for all based on the type of the
6178 single sequence argument). (The old non-inline implementation
6179 of the general M-argument sequence-of-length-N case required
6180 O(M*N*N) time when any of the sequence arguments were LISTs.)
6181 * The QUIT :UNIX-CODE keyword argument has been renamed to
6182 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6183 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6185 * Raymond Wiker's patches to port dynamic loading from Linux to
6186 FreeBSD have been added.
6187 * The BUGS file is now more nearly up to date, thanks in large part
6188 to Martin Atzmueller's review of it.
6189 * The debugger now flushes standard output streams before it begins
6190 its output ("debugger invoked" and so forth).
6191 * The core version number and fasl file version number have both
6192 been incremented, because of incompatible changes in the layout
6194 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6195 used to not be called for a saved Lisp image.)
6196 * Martin Atzmueller's version of a patch to fix a compiler crash,
6197 as posted on sbcl-devel 13 September 2000, has been installed.
6198 * Instead of installing Martin Atzmueller's patch for the
6199 compiler transform for SUBSEQ, I deleted the compiler transform,
6200 and transforms for some similar consing operations.
6201 * A bug in signal handling which kept TRACE from working on OpenBSD
6203 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6204 away by constant folding
6205 * The system now defines its address space constants in one place
6206 (in the Lisp sources), and propagates them automatically elsewhere
6207 (through GENESIS and the sbcl.h file). Therefore, patching the
6208 address map is less unnecessarily tedious and error-prone. The
6209 Lisp names of address space constants have also been systematized.
6210 * CVS tags like dollar-Header-dollar have been removed from
6211 the sources, because they have never saved me trouble and
6212 they've been source of trouble working with patches and other
6213 diff-related operations.
6214 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6215 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6217 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6219 * The system has been ported to OpenBSD.
6220 * The system now compiles with a simple "sh make.sh" on the systems
6221 that it's supported on. I.e., now you no longer need to tweak
6222 text in the target-features.lisp-expr and symlinks in src/runtime/
6223 by hand, the make.sh takes care of it for you.
6224 * The system is no longer so grossly inefficient when compiling code
6225 involving vectors implemented as general (not simple) vectors (VECTOR T),
6226 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6227 which dares to use the various sequence functions on non-simple
6228 vectors, takes less of a performance hit.
6229 * There is now a primitive type predicate VECTOR-T-P
6230 to test for the (VECTOR T) type, so that e.g.
6231 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6232 can now be compiled with some semblance of efficiency. (The old code
6233 turned the type declaration into a full call to %TYPEP at runtime!)
6234 * AREF on (VECTOR T) is still not fast, since it's still compiled
6235 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6236 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6237 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6238 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6239 without making full calls to SUBTYPEP at runtime.
6240 (Some analogous efficiency issues for non-simple vectors specialized to
6241 element types other than T, or for non-simple multidimensional arrays,
6242 have not been addressed. They could almost certainly be handled the
6243 same way if anyone is motivated to do so.)
6244 * The changes in array handling break binary compatibility, so
6245 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6246 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6247 instead of (VALUES T T).
6248 * By following the instructions that Dan Barlow posted to sbcl-devel
6249 on 2 July 2000, I was able to enable primitive dynamic object
6250 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6251 functionality is not implemented (since it calls ld to resolve
6252 library references automatically, requiring RUN-PROGRAM for its
6253 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6254 try to resolve library references) is now supported.
6255 * The system now flushes the standard output streams when it terminates,
6256 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6257 them at several other probably-convenient times, e.g. in each pass of
6258 the toplevel read-eval-print loop, and after evaluating a form given
6259 as an "--eval" command-line option. (These changes were motivated by a
6260 discussion of stream flushing issues on cmucl-imp in August 2000.)
6261 * The source transform for TYPEP of array types no longer assumes
6262 that an array whose element type is a not-yet-defined type
6263 is implemented as an array of T, but instead punts, so that the
6264 type will be interpreted at runtime.
6265 * There is now some support for cross-compiling in make.sh: each of
6266 the phases of make.sh has its own script. (This should be transparent
6267 to people doing ordinary, non-cross-compile builds.)
6268 * Since my laptop doesn't have hundreds of megabytes of memory like
6269 my desktop machine, I became more motivated to do some items on
6270 my to-do list in order to reduce the size of the system a little:
6271 ** Arrange for various needed-only-at-cold-init things to be
6272 uninterned after cold init. To support this, those things have
6273 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6274 symbols with such names are now uninterned after cold init).
6275 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6276 fasl files for cold load.
6277 ** Remove the old compiler structure pooling code (which used to
6278 be conditional on the target feature :SB-ALLOC) completely.
6279 ** Redo the representation of some data in cold init to be more compact.
6280 (I also looked into supporting byte compiled code at bootstrap time,
6281 which would probably reduce the size of the system a lot, but that
6282 looked too complicated, so I punted for now.)
6283 * The maximum signal nesting depth in the src/runtime/ support code has
6284 been reduced from 4096 to 256. (I don't know any reason for the very
6285 large old value. If the new smaller value turns out to break something,
6286 I'll probably just bump it back up.)
6287 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6289 * Many, many bugs reported by Peter Van Eynde have been added to
6290 the BUGS list; some have even been fixed.
6291 * While enabling dynamic object file loading, I tried to make the
6292 code easier to understand, renaming various functions and variables
6293 with less ambiguous names, and changing some function calling
6294 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6295 * While trying to figure out how to do the OpenBSD port, I tried to
6296 clean up some of the code in src/runtime/. In particular, I dropped
6297 support for non-POSIX signal handling, added various comments,
6298 tweaked the code to reduce the number of compilation warnings, and
6299 renamed some files to increase consistency.
6300 * To support the new automatic configuration functionality in make.sh,
6301 the source file target-features.lisp-expr has been replaced with the
6302 source file base-target-features.lisp-expr and the machine-generated
6303 file local-target-features.lisp-expr.
6304 * fixed a stupid quoting error in make.sh so that using CMU CL
6305 "lisp -batch" as cross-compilation host works again
6307 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6309 * DESCRIBE no longer tries to call itself recursively to describe
6310 bound/fbound values, so that it no longer fails on symbols which are
6311 bound to themselves (like keywords, T, and NIL).
6312 * DESCRIBE now works on generic functions.
6313 * The printer now prints less-screwed-up representations of closures
6314 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6315 * A private symbol is used instead of the :EMPTY keyword previously
6316 used to mark empty slots in hash tables. Thus
6317 (DEFVAR *HT* (MAKE-HASH-TABLE))
6318 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6319 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6320 now does what ANSI says that it should. (You can still get
6321 similar noncompliant behavior if bang on the hash table
6322 implementation with all the symbols you get back from
6323 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6324 This breaks binary compatibility, since tests for equality to
6325 :EMPTY are wired into things like the macroexpansion of
6326 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6328 * There's now a minimal placeholder implementation for CL:STEP,
6329 as required by ANSI.
6330 * An obscure bug in the interaction of the normal compiler, the byte
6331 compiler, inlining, and structure predicates has been patched
6332 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6333 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6335 * Missing ordinary arguments in a macro call are now detected even
6336 when the macro lambda list contains &KEY or &REST.
6337 * The debugger no longer complains about encountering the top of the
6338 stack when you type "FRAME 0" to explicitly instruct it to go to
6339 the top of the stack. And it now prints the frame you request even
6340 if it's the current frame (instead of saying "You are here.").
6341 * As specified by ANSI, the system now always prints keywords
6342 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6344 * The default initial SIZE of HASH-TABLEs is now smaller.
6345 * Type information from CLOS class dispatch is now propagated
6346 into DEFMETHOD bodies, so that e.g.
6347 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6349 is now basically equivalent to
6350 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6351 (DECLARE (TYPE SINGLE-FLOAT X))
6353 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6354 operation, without having to do run-time type dispatch.
6355 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6356 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6357 * Since I don't seem to be making big file reorganizations very often
6358 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6359 is overflowing my ability to conveniently back them up), I've finally
6360 checked the system into CVS. (The CVS repository is on my home system,
6361 not at SourceForge -- putting it on SourceForge might come later.)
6362 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6363 high-level GC-NOTIFY-FOO functions send their output. (There's
6364 still very little control of where low-level verbose GC functions
6365 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6366 less than it used to -- the GC-NOTIFY-FOO functions are now under
6367 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6368 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6369 in only one place in the source code, and propagates it automatically
6370 everywhere that it's needed. Thus e.g. when I bump the version from
6371 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6372 * The C source files now include boilerplate legalese and documentation
6373 at the head of each file (just as the Lisp source files already did).
6374 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6375 to his page will be replaced with a link to his new CLiki service.
6377 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6379 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6380 * The build process now looks for GNU make under the default name "gmake",
6381 instead of "make" as it used to. If GNU make is not available as "gmake"
6382 on your system, you can change this default behavior by setting the
6383 GNUMAKE environment variable.
6384 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6385 can build without error under CMU CL.
6387 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6389 * There is now a partial SBCL user manual (with some new text and some
6390 text cribbed from the CMU CL manual).
6391 * The beginnings of a profiler have been added (starting with the
6392 CMU CL profiler and simplifying and cleaning up). Eventually the
6393 main interface should be through the TRACE macro, but for now,
6394 it's still accessed through vaguely CMU-CL-style functions and macros
6395 exported from the package SB-PROFILE.
6396 * Some problems left over from porting CMU CL to the new
6397 cross-compilation bootstrap process have been cleaned up:
6398 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6399 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6400 part when getting rid of the compiler *BACKEND* stuff.)
6401 ** The value of *NULL-TYPE* was screwed up, because it was
6402 being initialized before the type system knew the final
6403 definition of the 'NULL type. This screwed up several key
6404 optimizations in the compiler, causing inefficiency in all sorts
6405 of places. (I found it because I wanted to understand why
6406 GET-INTERNAL-RUN-TIME was consing.)
6407 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6408 PROCLAIM FTYPE information. Unfortunately this broke binary
6409 compatibility again, since now the forms output by DEFGENERIC
6410 to refer to functions which didn't exist in 0.6.3.
6411 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6412 can use the new (as of 0.6.3) transform for SOME into MAP into
6414 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6415 values to (INTEGER 0 1000000), so that the time code will no longer
6416 occasionally get blown up by Linux returning 1000000 microseconds
6417 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6418 its output conform to the ANSI spec. (Alas, this makes its output
6419 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6420 * A full call to MAP NIL with a single sequence argument no longer conses.
6421 * fixes to problems pointed out by Martin Atzmueller:
6422 * The manual page no longer talks about multiprocessing as though
6423 it were currently supported.
6424 * The ILISP support patches have been removed from the distribution,
6425 because as of version 5.10.1, ILISP now supports SBCL without us
6426 having to maintain patches.
6427 * added a modified version of Raymond Toy's recent CMU CL patch for
6428 EQUALP comparison of HASH-TABLE
6430 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6432 * The system still can't cross-compile itself with
6433 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6434 entails), but at least it can compile more of itself that way
6435 than it used to be able to, and various buglets which were uncovered
6436 by trying to cross-compile itself that way have now been fixed.
6437 * This release breaks binary compatibility again. This time
6438 at least I've incremented the FASL file format version to 2, so that the
6439 problem can be detected reliably instead of just causing weird errors.
6440 * various new style warnings:
6441 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6442 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6443 ** using the lexical binding of a variable named in the *FOO* style
6444 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6445 as specified by ANSI.
6446 * *RANDOM-STATE* is no longer automatically initialized from
6447 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6448 default behavior of the system is to repeat its behavior every time
6449 it's run. If you'd like to change this behavior, you can always
6450 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6451 old convention there was no comparably easy way to get the system to
6452 repeat its behavior every time it was run.
6453 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6454 FTYPE declarations has been removed, in favor of their ANSI
6455 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6456 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6457 the types of their sequence arguments can be determined at compile time.
6458 This is done through a new open code expansion for MAP which eliminates
6459 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6460 argument types can be determined at compile time.
6461 * The optimizer now transforms COERCE into an identity operation when it
6462 can prove that the coerced object is already of the correct type. (This
6463 can be a win for machine generated code, including the output of other
6464 optimization transforms, such as the MAP transform above.)
6465 * Credit information has been moved from source file headers into CREDITS.
6466 * Source file headers have been made more standard.
6467 * The CASE macro now compiles without complaining even when it has
6470 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6472 * (Note that the way that the PCL macroexpansions were rewritten
6473 to accommodate the change in DEFGENERIC below breaks binary
6474 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6475 not run under sbcl-0.6.2. Once we get out of alpha releases,
6476 i.e. hit release 1.0.0, we'll probably try to maintain binary
6477 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6478 and sbcl-1.4.4. Until then, however, it might be fairly common
6479 for maintenance releases to break binary compatibility.)
6480 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6482 * The reporting of unhandled signals has been changed to print some
6483 explanatory text as well as the report form. (Previously only
6484 the report form was printed.)
6485 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6486 it defines, so that the compiler no longer issues undefined function
6487 warnings for compiled-but-not-yet-loaded generic functions.
6488 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6489 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6490 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6491 section of the ANSI spec are supported.
6492 * The "" nickname for the "KEYWORD" package has been removed.
6493 The reader still handles symbol tokens which begin with a package marker
6494 as keywords, but it doesn't expose its mechanism for doing so in the
6495 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6496 * The system now issues STYLE-WARNINGs for contradictory TYPE
6497 proclamations. (Warnings for contradictory FTYPE proclamations would
6498 be nice too, but those can't be done usefully unless the type system
6499 is made smarter about FUNCTION types.)
6500 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6501 systematized, so that "*target-*.lisp is supposed to exist only on the
6502 target and imply that there's a related file which exists on the
6503 host, and *host-*.lisp is supposed to exist only on the host and imply
6504 that there's a related file which exists on the target. This involves a
6505 lot of renaming. Hopefully the acute confusion caused by the renaming
6506 will be justified by the reduction in chronic confusion..
6507 ** runtime-type.lisp -> early-target-type.lisp
6508 ** target-type.lisp -> late-target-type.lisp
6509 ** early-host-format.lisp -> early-format.lisp
6510 ** late-host-format.lisp -> late-format.lisp
6511 ** host-error.lisp -> misc-error.lisp
6512 ** early-error.lisp -> early-target-error.lisp
6513 ** late-error.lisp -> late-target-error.lisp
6514 ** host-defboot.lisp -> early-defboot.lisp
6515 ** code/misc.lisp -> code/target-misc.lisp
6516 ** code/host-misc.lisp -> code/misc.lisp
6517 ** code/numbers.lisp -> code/target-numbers.lisp
6518 ** code/early-numbers.lisp -> numbers.lisp
6519 ** early-host-type.lisp -> early-type.lisp
6520 ** late-host-type.lisp -> late-type.lisp
6521 ** host-typep.lisp -> typep.lisp
6522 ** load.lisp -> target-load.lisp
6523 ** host-load.lisp -> load.lisp
6524 ** host-disassem.lisp -> disassem.lisp
6525 ** host-insts.lisp -> insts.lisp
6526 ** byte-comp.lisp -> target-byte-comp.lisp
6527 ** host-byte-comp.lisp -> byte-comp.lisp
6528 ** host-signal.lisp -> signal.lisp
6529 ** host-defstruct.lisp -> defstruct.lisp
6530 ** late-target-type.lisp -> deftypes-for-target.lisp
6531 Furthermore, several other previously target-only files foo.lisp (e.g.
6532 hash-table.lisp and random.lisp) have been split into a target-and-host
6533 foo.lisp file and a target-only target-foo.lisp file, with their key type
6534 definitions in the target-and-host part, so that the cross-compiler will
6535 know more about target types.
6536 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6537 gone away. In their place are various *BACKEND-FOO* variables
6538 corresponding to the slots of the old structure.
6539 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6540 into the target SBCL has been fixed.
6541 * The chill.lisp system for loading cold code into a running SBCL
6543 * Support for the CMU CL "scavenger hook" extension has been removed.
6544 (It was undocumented and unused in the CMU CL sources that SBCL was
6545 derived from, and stale in sbcl-0.6.1.)
6546 * Various errors in the cross-compiler type system were detected
6547 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6548 (enabling various consistency checks). Many of them were fixed,
6549 but some hard problems remain, so the compiler is back to
6550 running without *TYPE-SYSTEM-INITIALIZED* for now.
6551 * As part of the cross-compiler type system cleanup, I implemented
6552 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6553 * I have started adding UNCROSS calls throughout the type system
6554 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6555 on cross-compiler input files will be able to go away, and various
6557 * CONSTANTP now returns true for quoted forms (as explicitly required
6560 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6562 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6563 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6564 (MAKE-LIST -1). In the longer term, it ought to become true
6565 that declarations are assertions even at SAFETY 1. For now, it's not
6566 quite true even at SAFETY 3, but it's at least more nearly true..
6567 (Note that this change seems to increases the size of the system by
6568 O(5%) and to decrease the speed of the compiler by 20% or more.)
6569 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6570 for the problem of printing dozens of lines of distracting information
6571 about low-level system machinery as part of the top stack frame
6572 on entry to the debugger when an undefined function was called.
6573 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6574 is not reset to COMMON-LISP-USER.
6575 * Compilation of stuff related to dyncount.lisp has been made conditional
6576 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6577 smaller. The various dyncount-related symbols have been moved into
6578 a new "SB-DYNCOUNT" package.
6579 * tty-inspect.lisp has been renamed to inspect.lisp.
6580 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6581 feature has gone away. (When we eventually port to other flavors of
6582 libc and/or Unix, we'll try to make the differences between flavors
6583 invisible at the user level.)
6584 * Various other *FEATURES* tags, and/or their associated conditionals,
6585 have been removed if obsolescent, or given better documentation, or
6586 sometimes given more-mnemonic names.
6588 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6590 * tidied up "make.sh" script
6591 * tidied up system directory structure
6592 * better "clean.sh" behavior
6593 * added doc/FOR-CMUCL-DEVELOPERS
6594 * many many small tweaks to output format, e.g. removing possibly-confusing
6595 trailing #\. character in DESCRIBE-INSTANCE
6596 * (EQUALP #\A 'A) no longer signals an error.
6597 * new hashing code, including EQUALP hashing
6598 * tidied up Lisp initialization and toplevel
6599 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6600 * command line argument processing
6601 * added POSIX-GETENV function to deal with Unix-ish environment variables
6602 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6603 terminating SBCL on EOF
6604 * non-verbose GC by default
6605 * There is no more "sbcl" shell script; the sbcl file is now the C
6606 runtime executable (just like CMU CL).
6607 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6609 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6610 symbol and package information as Lisp native symbol and package objects
6611 instead of strings naming symbols and strings naming packages. This way,
6612 whenever packages are renamed (as in warm init), debug information is
6613 transformed along with everything else.
6614 * tweaked the optimization policy declarations which control the building
6615 of SBCL itself. Now, among other things, the system no longer saves
6616 source location debugging information. (This helps two problems at once
6617 by reducing SBCL size and by keeping SBCL from trying to look for its
6618 sources -- which may not exist -- when reporting errors.)
6619 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6620 debugging and testing purposes
6621 * cleaned up printing, making the printer call PRINT-OBJECT for
6622 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6623 methods, giving nearly-ANSI behavior
6624 * converted almost all special variables to use *FOO* naming convention
6625 * deleted PARSE-TIME functionality, since it can be done portably
6626 * moved some files out of cold init into warm init
6627 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6629 * regularized formatting of source files
6630 * added an install.sh script
6631 * fixed ridiculous memory usage of cross-compiler by making
6632 compiler/alloc.lisp not try to do pooling unless it can hook
6633 itself into the GC of the cross-compilation host. Now the system
6634 builds nicely on my old laptop.
6635 * added :SB-ALLOC in target-features.lisp-expr
6636 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6637 was not implemented)
6638 * re-did condition handling and note reporting in the compiler. Notes
6639 are no longer handled by signalling conditions. Style warnings
6640 and warnings are handled more correctly and reported in such a way
6641 that it's easy to find one or the other in your output (so that you
6642 can e.g. figure out which of many problems caused COMPILE-FILE to
6644 * changed the severity of several compiler warnings from full WARNING
6645 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6646 compiler note reporting so that it doesn't use the condition system
6647 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6648 COMPILE-FILE command)
6649 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6650 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6651 no longer supported, since their implementation was deeply intertwingled
6652 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6653 * removed bogus "support" for compiler macros named (SETF FOO), and
6654 removed the compiler macro for SETF INFO (but only after making a fool
6655 of myself on the cmucl-imp mailing list by posting a bogus patch for
6656 DEFINE-COMPILER-MACRO..)
6657 * Compiled files containing forms which have side effects on the Lisp
6658 reader (such as DEFPACKAGE forms) are now handled more correctly.
6659 (Compiler queuing of top level lambdas has been suppressed by setting
6660 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6661 * deleted various currently-unused source files, e.g. gengc.lisp. They
6662 may be added back at some point e.g. when porting to other architectures,
6663 but until they are it's distracting to distribute them and to try to
6665 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6666 there were so many of them they're just distractions, and UNCROSS is
6667 known to be able to handle the current sources
6668 * moved PROFILE functionality into TRACE, so that it will be clear
6669 how the wrapping and unwrapping of functions when you profile them
6670 interacts with the wrapping and unwrapping of functions when you
6671 trace them. (Actually, the functionality isn't there yet, but at least
6672 the interface specification is there. Hopefully, the functionality will
6673 arrive with some future maintenance release.)
6674 * removed host-oops.lisp
6675 * changed signature of QUIT function to allow UNIX-CODE argument
6676 * fixed READ-SEQUENCE bug
6677 * tweaked verbose GC output so that it looks more like the progress
6678 output that ANSI specifies for functions like LOAD
6679 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6680 * added <http://sbcl.sourceforge.com> to the banner information printed by