1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.8:
3 * enhancement: disassemble now annotates some previously missing static
4 functions, like LENGTH.
5 * optimization: calls to static functions on x86-64 use less instructions.
6 * optimization: compute encode-universal-time at compile time when possible.
7 * optimization: when referencing internal functions as #'x, don't go through
8 an indirect fdefn structure.
9 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
10 * optimization: (mod fixnum) type-checks are performed using one unsigned
11 comparison, instead of two.
12 * optimization: enable more modular arithmetic transforms in the presence of
14 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
15 when the result is known to be negative.
16 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
17 * optimization: comparisons between rationals and constant floats or between
18 integers and constant ratios are now converted to rationals/integers at
20 * bug fix: problems with NCONC type derivation (reported by Jerry James).
21 * bug fix: EXPT type derivation no longer constructs bogus floating-point
22 types. (reported by Vsevolod Dyomkin)
23 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
24 addrinfo. (lp#1187041, patch by Jerry James)
25 * bug fix: uninitialized type-error conditions can now be printed.
27 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
28 listening, allowing several tests to run in parallel.
29 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
30 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
32 * bug fix: Specialised SIMD-PACK types can be negated.
33 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
34 reported by Eric Marsden)
35 * bug fix: FP return values from foreign calls are always rounded to single
36 or double float precision on x87.
37 * bug fix: Known-safe vector access on x86oids should not fail spuriously
38 when the index is of the form (+ x constant-positive-integer).
40 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
41 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
42 ROOM, plus a few SB-INTROSPECT functions) has been completely
43 rewritten; it may now exhibit different bugs than before.
44 * new feature: minimal runtime/compiler intrastructure support for SSE
45 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
46 feature :sb-simd-pack. This should enable intrinsics extensions as
47 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
48 for maintaining a branch for so long.
49 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
50 the working directory of the spawned process.
51 (lp#791800) (patch by Matthias Benkard)
52 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
53 stack-allocated on PPC.
54 * enhancement: "fixed objects" can now be stack-allocated on PPC.
55 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
56 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
57 also returns VOPs which do not translate any functions, and finds
58 defoptimizer types ir2convert and stack-allocate-result.
59 * enhancement: better type derivation for APPEND, NCONC, LIST.
61 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
62 heap in a manner similar to the GC rather than its previous ad-hoc
63 scheme, and is therefore no less and possibly more accurate.
64 * fixes and enhancements related to Unicode:
65 ** the character database information has been updated to Unicode 6.2;
66 ** support for canonical and compatibility decomposition of characters has
67 been added, along with support for primary composition;
68 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
69 NFKD) has been included;
70 ** querying the character database for code points not defined by Unicode
71 gives less wrong answers (lp#1178038, reported by Ken Harris)
72 * enhancement: print intermediate evaluation results for some ASSERTed
73 expressions. (lp#789497) (patch by Alexandra Barchunova)
74 * enhancement: x86-64 disassemblies are annotated with unboxed constant
75 values when there are references to (RIP-relative) unboxed constants.
76 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
77 of quadratically with the size of the input in the worst case.
79 * bug fix: handle errors when initializing *default-pathname-defaults*,
80 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
81 decoding errors, or directories being deleted.
82 * bug fix: Loading a core with a discontiguous dynamic space now correctly
83 computes the amount of dynamic space used.
84 * bug fix: disassembler missing ",8" on SHLD
85 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
86 that provide an "invalid" stack frame link for the signal handler
87 itself now use the saved-fp-and-pc mechanism to pick up from the stack
88 frame in the interrupt (signal) context. This is known to affect
89 threaded FreeBSD/x86-64.
90 * bug fix: some LOOP statements couldn't be compiled.
92 * bug fix: sb-sequence:dosequence works on literal vectors.
93 * bug fix: errors in generic arithmetic show the assembly routine's
94 caller on x86 and x86-64. (lp#800343)
95 * bug fix: Compile-time type errors should never result in COMPILE-FILE
97 * bug fix: Known bad local calls do not cause strange failures when
98 emitting or dumping code. (lp#504121)
99 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
100 codegen errors: type checks are inserted as necessary. (lp#1177703)
101 * bug fix: Unsigned modular arithmetic is correctly converted into signed
102 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
103 * bug fix: a combination of inlined local function with &optional and
104 recursion no longer causes undescriptive compiler errors. (lp#1180992)
105 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
106 when testing for non-zero-ness.
107 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
109 * bug fix: Type mismatch for the value of conditional expressions are
110 correctly reported when detected at compile-time, instead of complaining
111 about a constant NIL (similar for non-EQ-comparable catch tags).
112 * bug fix: Referring to INLINE global functions as values should not result
113 in a compilation failure. (lp#1035721)
114 * optimization: faster ISQRT on fixnums and small bignums
115 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
116 * optimization: On x86-64, the number of multi-byte NOP instructions used
117 for code alignment is now always minimal.
118 * optimization: On 64-bit targets, the compiler generates much faster
119 code for type checks for types known at compile time that are smaller
120 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
121 their COMPLEX variants.
122 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
123 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
124 * optimization: ROOM no longer conses so egregiously on non-x86oid
126 * optimization: associative bitwise operations reassociate patterns like
127 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
129 * optimization: quasiquote expressions now perform more constant folding,
130 instead of consing equal lists at runtime. (lp#1026439)
131 * optimization: local call analysis of inlined higher-order function
132 should converge more quickly, resulting in better code for complex
134 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
135 integer constants are handled more cleverly, especially when they
136 can be represented as sign-extended (signed-byte 32). (Based on a
137 patch by Douglas Katzman)
138 * optimization: IF/IF conversion should reliably result in sane code
139 when (some of) the results of the inner IF are always false or
141 * optimization: On x86oids, variable right shifts of machine words are
142 compiled into straight SAR/SHR, instead of going through the generic
145 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
146 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
148 * bug fix: :allocation slot option works for condition slots
150 * bug fix: redefining conditions does not lead to multiple evaluations of
151 hairy slot initfunctions anymore (lp#1164969)
152 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
154 * bug fix: function constants now work as initforms and default initarg
155 values of conditions (lp#539517)
156 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
157 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
158 * bug fix: no more bogus ## references when pretty printing backquoted
159 forms with non-trivial structure sharing. (lp#1161218)
160 * bug fix: Don't signal an error on (setf (documentation nil 'function)
161 "doc"). Signal a style-warning instead when trying to set documentation
162 of NIL for all other documentation types. (Reported by Zach
163 Beane; regression since 2e52fa05.)
164 * bug fix: modular arithmetic involving large constants and conditionals
165 should no longer result in spurious dead code elimination. (Reported by
167 * bug fix: our mach exception handler can seemingly called very early in
168 the program execution process on OS X 10.8.0. Try and handle that case
169 robustly, without potentially leaking mach ports too much.
170 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
172 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
173 * enhancement: the continuable error when defknown-ing over extant
174 fndb entries can be ignored by passing :overwrite-fndb-silently t
175 as a keyword argument to sb-c:defknown (after attributes). Useful
176 to allow defknown to be re-loaded. Use with :allow-other-keys t
177 for backward compatibility.
178 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
180 * bug fix: Prevent a make-array transform from modifying source forms
181 causing problems for inlined code. Thanks to Bart Botta.
182 (regression since 1.0.42.11-bis)
183 * bug fix: clear-output calls the correct gray stream routine,
184 sb-gray:stream-clear-output. (lp#1153257)
185 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
187 * bug fix: Better error messages for package operations (lp#1154776)
188 * bug fix: delete-package on a nonexistent package should signal a cerror.
189 (regression since 1.0.37.44).
190 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
191 (lp#1154946, lp#1072112)
192 * bug fix: compiling make-array no longer signals an error when the
193 element-type is an uknown type, a warning is issued instead.
194 Thanks to James Kalenius (lp#1156095)
195 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
196 produces wrong results for some inputs. (Thanks to Jan Moringen.)
199 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
200 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
202 * new feature: package local nicknames. See manual for details.
203 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
204 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
205 * enhancement: easier to use restarts for resolving name-conflicts
206 resulting from IMPORT, EXPORT, or USE-PACKAGE.
207 * enhancement: variant DEFPACKAGE forms now signal a full error with
208 restarts provided for resolving the situation. (lp#891351)
209 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
210 DEFPACKAGE forms can now signal a full error with restarts provided for
211 resolving the situation. See manual for details. (lp#891351)
212 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
213 (Thanks to Anton Kovalenko.) (lp#1102748)
214 * enhancement: backtrace improvements
215 ** secondary CLOS dispatch functions have better debug names (lp#503081)
216 ** easier to read method names in backtraces. See
217 SB-DEBUG:*METHOD-FRAME-STYLE*.
218 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
219 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
220 SB-DEBUG:BACKTRACE-AS-LIST.
221 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
222 information is available in less intrusive form as frame annotations.
223 * enhancement: SB-POSIX now provides MAP-ANON.
224 * enhancement: test-suite results are colorized, failures in red, unexpected
225 success in green. Works on Windows and on terminals with ANSI escape code
226 support. Can be disabled with --no-color.
227 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
228 (thanks to James M. Lawrence)
229 * bug fix: no more unused variable style warnings from RESTART-CASE
230 macroexpansion (lp#1113859)
231 * bug fix: no more unused variable style warnings when loading
232 sb-bsd-sockets.asd (lp#1114681)
233 * bug fix: deleting a package removes it from implementation-package
234 lists of other packages.
235 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
236 This does not fix the occasional "interrupt already pending" issue, though.
237 * bug fix: (setf (documentation 'x 'function)) and
238 (setf (documentation #'x t)) set documentation in different places.
239 (regression since 1.0.43.63)
240 * bug fix: build on newer glibc. (lp#1095036)
242 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
243 * optimization: LOOP expressions using "of-type character" have slightly
244 more efficient expansions.
245 * bug fix: very long (or infinite) constant lists in DOLIST do not result
246 in very long compile times or heap exhaustion anymore. (lp#1095488)
247 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
248 * bug fix: adjust-array ignored :initial-element for simple-vectors.
250 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
251 longer cause infinite loops (on circular data) or violate eqlity
252 constraints. (lp#1099708)
253 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
255 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
256 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
258 * enhancement: support for C-c to interrupt the foreground thread
259 on Windows. (Thanks to Anton Kovalenko.)
260 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
261 * enhancement: Safepoint builds on POSIX platforms can now optionally be
262 built without pseudo-atomic sequences and their run-time overhead.
263 * enhancement: Threads created outside of Lisp can enter Lisp through
264 alien callbacks and appear as Lisp threads for the duration of that
265 function invocation. On safepoint builds only.
266 * enhancement: Miscellaneous improvements to namestrings and underlying
267 calls to OS functions for file system access on Windows. (Thanks to
269 * enhancement: The MSI installer support for Windows now uses Windows
270 Installer XML at least version 3.5 and includes various usability
271 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
272 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
273 on Windows. (Thanks to Anton Kovalenko.)
274 * enhancement: The Windows backend now supports the x86-64 platform.
275 (Thanks to Anton Kovalenko.)
276 * bug fix: fasls are now once again directly executable (on platforms
277 supporting shebang lines, with a suitably-installed sbcl).
278 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
279 * bug fix: Fix CAS access to slots of direct instances of structure classes
280 in the presence of subclasses sharing the same conc-name.
281 * bug fix: Logical pathname namestrings on Windows have been changed to
282 be lower-case, to minimize differences between POSIX and Windows.
284 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
285 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
286 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
287 (NT 5.0) is no longer being maintained.
288 * notice: Starting with this version, SBCL on Windows no longer supports
289 building with disabled thread support.
290 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
291 * enhancement: New feature sb-dynamic-core allows the runtime to be
292 rebuilt or relocated without requiring changes to the core file on
293 all linkage table platforms. Required on Windows. (Thanks to Anton
295 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
296 * enhancement: I/O on Windows unnamed pipes is interruptible
297 asynchronously using interrupt-thread, timers when running on Windows NT
298 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
300 * enhancement: Support for the experimental safepoint-based stop-the-world
301 protocol on the PowerPC platform.
302 * bug fix: Non-blocking reads from the Windows console were not necessarily
303 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
304 * bug fix: stability of threads on Windows has been improved upon through
305 an updated stop-the-world protocol (thanks to Anton Kovalenko).
307 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
308 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
309 (COMPILE and COMPILE-FILE still do.)
310 * optimization: the SPARC backend now supports the precise generational
311 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
312 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
313 * enhancement: add experimental support for the SB-THREAD feature and the
314 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
315 Threads are enabled by default, and this version of SBCL is considered
316 to be the last and final release to officially support building with
318 * optimization: The compiler no longer rotates loops in some cases where
319 this transformation actually lead to worse code being generated.
320 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
321 symbol-macros by lexical bindings.
322 * bug fix: stack allocation was prevented by high DEBUG declaration in
324 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
325 (thanks to SANO Masatoshi)
326 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
327 :JUNK-ALLOWED was true.
328 * bug fix: type derivation inferred overly conservative types for
329 unions of array types. (lp#1050768)
331 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
332 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
333 source annotation of DISASSEMBLE output. Defaults to T.
334 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
335 WAIT-P argument added to WITH-RECURSIVE-LOCK.
336 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
338 * enhancement: Optional features (not enabled by default) allow the
339 use of signals for inter-thread synchronization to be reduced on certain
340 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
341 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
342 to test these experimental features. Known remaining bugs include minor
343 thread safety issues, less timely freeing of memory by GC, and certain
344 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
345 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
346 comparisons, particularly on almost-sorted inputs.
347 * bug fix: Reading floats with large exponents no longer takes too much time
348 before reporting that the exponent is too large.
349 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
350 correctly when the received datagram is larger than the provided buffer.
351 (lp#1023438, thanks to Robert Uhl)
352 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
353 a SYMBOL-VALUE form with a constant symbol argument.
354 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
355 into a DEFCAS defined place was used as the place.
356 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
357 for from bit-vectors.
358 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
359 lead to internal errors or crashes (lp#1058799).
360 * documentation: a section on random number generation has been added to the
363 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
364 * enhancement: implicit generic function warnings now specify the package
365 in which the new generic function is being created.
366 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
367 updates of CAS-able places (similar to Clojure's swap!).
368 * enhancement: run-program no longer decodes and re-encodes environment when
369 :environment argument is not provided. (lp#985904)
370 * enhancement: errors during compiler-macro expansion no longer cause
371 runtime errors, only a compile-time warning, otherwise behaving as if
372 the compiler macro had declined to expand.
373 * optimization: On x86-64, code alignment of block headers is done with
374 multi-byte NOPs now instead of repetitions of the single-byte NOP.
375 * optimization: MAP-INTO is substantially faster when the target sequence is
376 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
377 thanks to James M. Lawrence)
378 * optimization: the compiler no longer heap-conses to check exits in cases
379 where the exit function is dynamic extent, or when it can prove the exit
380 function cannot escape. (lp#1002534)
381 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
382 element type, and vectors that aren't SIMPLE-ARRAYs.
383 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
384 speed (around 1/3 the time in some cases), and a little better in terms of
385 comparison calls. (Thanks to Takeru Ohta)
386 * bug fix: On SPARC, a limitation on the number of code constants emittable
387 by the compiler has been lifted, allowing certain long functions to
388 compiled and assembled which had previously been unsupported; fixes
389 cl-bench on this ISA (lp#1008996).
390 * bug fix: potential for infinite recursion during compilation of CLOS slot
391 typechecks when dependency graph had loops. (lp#1001799)
392 * bug fix: error forms reported with some program-errors were not escaped
394 * bug fix: functions from EVAL are now on more equal footing with functions
395 from COMPILE. (lp#1000783, lp#851170, lp#922408)
396 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
397 objects as its :METHOD-COMBINATION argument, not just lists designating
398 method combinations. (lp#936513)
399 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
401 * bug fix: restore build on solaris/sparc. (lp#1008506)
402 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
403 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
404 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
405 as keyword arguments no longer accidentally match unevaluated symbols
407 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
408 parameter was zero, now it signals an error. (lp#905817, fixed since
410 * bug fix: run-program with :pty t no longer makes the pty as the process's
412 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
415 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
416 * RANDOM enhancements and bug fixes:
417 ** bug fix: the range and distribution of random integers could be
418 catastrophically wrong when the compiler derived the type of its
419 argument as a disjoint set of small integers.
420 ** bug fix: the distribution of random integers is now completely
421 uniform even when the specified limit is not a power of two.
422 (Previously some values could be about 0.1 % more probable than
423 others in the worst case.) (lp#309467)
424 ** RANDOM on large integer arguments is generally faster and conses
425 less than before; this is visible for fixnums above a length of
426 about 24 bits, but extremely so for bignums: the old implementation
427 used time and space quadratical in the size of the argument there,
428 the new one is linear.
429 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
430 main entry point, SB-EXT:QUIT is deprecated.
431 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
432 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
433 * enhancement: FASL loading no longer grabs the world-lock.
434 * enhancement: GENCGC reclaims space more aggressively when objects being
435 allocated are a large fraction of the total available heap space.
437 * enhancement: backtraces show the correct number of arguments for frames
438 called with too many arguments.
439 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
441 * enhancement: ASDF has been updated 2.21.
442 * optimization: fewer uses of full calls to signed modular functions.
444 * optimization: typechecking alien values is typically 5 x faster.
445 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
447 * bug fix: file compilation performance issues when dumping subtypes
448 of CHARACTER (lp#994487)
449 * bug fix: fixed disassembly of some SSE instructions on x86-64.
450 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
451 OPEN. (lp#969352, thanks to Kambiz Darabi)
452 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
454 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
455 classoid even if X was not the proper name of the class. (lp#941102)
456 * bug fix: declaration leakage between lexical environments due to careless
457 use of NCONC in MAKE-LEXENV. (lp#924276)
458 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
459 *default-pathname-defaults* contains NAME or TYPE components.
460 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
461 from CL package, e.g. (loop . 10).
462 * bug fix: run-program with existent or non-existent files for :output or
463 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
464 returns NIL instead of signalling an obscure error.
465 * bug fix: fix miscompilation of some logand forms with large constant
466 arguments. (lp#974406)
467 * bug fix: account for funcallable-instance objects properly in ROOM.
468 * bug fix: incorrect octets reported for c-string decoding errors.
470 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
472 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
473 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
474 allowing faster release of memory back to the OS. (lp#991293)
475 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
476 existing deadline for the dynamic scope of its body.
477 * bug fix: compiler-internal interval arithmetic needed to be more
478 conservative about open intervals when operated on by monotonic but not
479 strictly-monotonic functions. (lp#975528)
480 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
481 it's also slightly faster. (lp#998926)
482 * bug fix: better error messages for malformed declarations.
484 * bug fix: define-condition didn't return the name of the defined condition.
486 ** improved docstrings: REPLACE (lp#965592)
488 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
489 * bug fix: fix copy-structure. When copying from stack to heap, garbage
490 could end up in the heap making GC unhappy.
491 (Thanks to James Knight, lp#911027)
493 ** SBCL can now be built using Clang.
494 ** ASDF has been updated 2.20.
495 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
496 * bug fix: don't complain about a too-hairy lexical environment for inlining
497 when the function has never been requested for inlining. (lp#963530)
499 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
500 * enhancements to building SBCL using make.sh:
501 ** --fancy can be specified to enable all supported feature enhancements.
502 ** --with-<feature> and --without-<feature> can be used to specify
503 which features to build with.
504 ** --arch option can be used to specify the architecture to build for.
505 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
506 full-blows cross-compilation.)
507 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
508 which allows specifying name of the default interning package for the
510 * enhancement: when *READ-EVAL* is true, arrays with element type other than
511 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
512 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
513 null alien when malloc() fails. (lp#891268)
514 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
515 conditions can be conveniently accessed through function with the same
516 name, analogously to CONTINUE.
517 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
518 from the printer by type, causing an error marker to be printed instead.
519 (Thanks to Attila Lendvai)
520 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
521 generally behave better when errors occur during printing.
522 * enhancement: the test runner now takes a --report-skipped-tests argument
523 to report the individual tests skipped as well as the number of skipped
525 * enhancement: undefined functions now appear in backtraces as ("undefined
526 function") instead of ("bogus stack frame") on x86oids.
527 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
528 deadlock errors are reported in an easier-to-decipher manner.
529 * enhancement: DESCRIBE on type designators reports the expansion in more
531 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
532 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
533 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
534 * enhancement: better disassembly of segment-prefixes on x86 and other
535 instruction prefixes (e.g. LOCK) on x86 and x86-64.
536 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
537 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
538 * optimization: SUBSEQ on vectors of unknown element type is substantially
540 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
541 be stack-allocated. (lp#902351)
542 * optimization: the compiler is smarter about representation selection for
543 floating point constants used in full calls.
544 * optimization: the compiler no longer refuses to coerce large fixnums to
545 single floats inline, except on x86 where this limitation is still
547 * optimization: truncation operations on integers with constant divisor
548 arguments 1 and -1 are optimized away.
549 * bug fix: deadlock detection could report the same deadlock twice, for
550 two different threads. Now a single deadlock is reported exactly once.
551 * bug fix: interval-arithmetic division during type derivation did not
552 account for signed zeros.
553 * bug fix: compiler error when typechecking a call to a function with
554 non-constant keyword arguments.
555 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
556 * bug fix: condition slot accessors no longer cause undefined function
557 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
558 form that defines them. (lp#896379)
559 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
561 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
562 bogusly report NIL, T.
563 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
564 required arguments ignored and performed assignments to others.
566 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
567 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
568 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
569 * bug fix: redefining a function whose previous definition contained an
570 unknown type no longer causes a style-warning. (lp#806243)
571 * bug fix: undefined functions now appear in backtraces as ("undefined
572 function") instead of ("bogus stack frame") on non-x86oids.
573 * bug fix: backtraces are no longer cut off at ("undefined function") when
574 called under certain circumstances (involving a caller-allocated stack
576 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
577 systems. (regression since 1.0.53)
578 * bug fix: GC deadlocks from dladdr() on certain platforms.
579 * bug fix: broken standard streams no longer automatically cause recursive
580 errors on debugger entry.
581 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
582 (regression since 1.0.53)
583 * bug fix: attempts to stack allocate a required argument to a function with
584 an external entry point caused compiler-errors.
585 * bug fix: compiler notes for failed stack allocation for a function argument
586 no longer claim to be unable to stack allocate the function.
587 * bug fix: COERCE now signals a type-error on several coercions to
588 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
589 * bug fix: missing failure-to-stack-allocate compiler notes for some
590 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
591 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
593 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
595 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
596 * minor incompatible changes:
597 ** RENAME-FILE on a symbolic links used to rename the linked-to file
599 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
600 directory, but now signal an error instead. Use TRUENAME to resolve the
601 pathname if you wish to delete the linked directory, and DELETE-FILE if
602 you wish to delete the
603 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
604 symbols associated with it will trigger a compile-time warning.
605 * thread-related enhancements:
606 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
607 Many thanks to generous donors!)
608 ** Threading is now more reliable on non-Linux platforms. We still don't
609 consider threads on non-Linux platforms good enough to enable them by
610 default, but they're in a clearly better shape now.
611 ** Deadlines supported now on all platforms.
612 ** All blocking functions in the threading API now have a :TIMEOUT
614 ** Semaphore notification objects have been added to SB-THREAD.
615 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
616 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
617 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
618 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
619 using an API anologous to defining new SETFable places.
620 * GC-related enhancements and bug fixes:
621 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
622 and Gb suffixes. Default is megabytes as before.
623 ** on GENCGC targets, the default dynamic space size is now 512Mb for
624 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
625 exception, defaulting to mere 444Mb to fit under default ulimits.) The
626 new defaults are in place to prevent hitting swap on low-end systems.
627 Use build-time option --dynamic-space-size to build an SBCL with
628 another default, or the runtime option to adjust the size at startup: a
629 good size is at most equal to the amount of physical memory the system
631 ** on GENCGC targets, nursery and generation sizes now default to 5% of
633 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
634 refuses to create SIMPLE-FUN objects.
635 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
637 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
638 validation of pointer objects as GENCGC does, instead of a
639 comparatively weak bounds-check against the heap spaces.
640 * SB-BSD-SOCKETS bug fixes:
641 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
642 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
643 systems with getaddrinfo().
644 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
645 safe outside systems with getaddrinfo().
646 * enhancement: ASDF has been updated 2.019.
647 * enhancement: special-case TCO prevention for functions which never return
648 extended to untrusted types, keeping one more frame's worth of debug
649 information around in many cases.
650 * enhancement: debug-names of anonymous and local function are more
651 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
652 * enhancement: on win32, ABS of complex floats guards better against
653 overflows. (lp#888410)
654 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
655 process exiting with code 1. (lp#676987)
656 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
657 the system where on the filesystem the SBCL sources themselves are
658 located. (Thanks to Zach Beane)
659 * enhancement: the compiler is now able to derive tighter bounds for
660 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
661 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
662 correctly, even on wide-fixnum builds. (lp#887220)
663 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
664 resolved to directories.
665 * bug fix: type mismatch when assigning to lexical variables no longer
666 result in fasl-dumping internal type objects. (lp#890750)
667 * bug fix: type mismatch on (SETF AREF) and function return values no
668 longer result in fasl-dumping internal type objects.
669 * bug fix: With several combinations of argument types, for example (EXPT
670 <integer> <(complex double)>), EXPT now uses double-precision throughout
671 instead of partially calculating only to single-precision. (lp#741564;
672 thanks to Lutz Euler)
673 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
674 objects when interrupted by GC on PPC.
676 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
677 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
678 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
679 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
680 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
681 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
682 targets is now 63 bits (up from 61).
683 * enhancement: DESCRIBE now reports a lambda-list and source location
684 for complext setf-expanders.
685 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
686 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
687 of multiple-valued places to be set to NIL, instead of signalling an
688 error (per a careful reading of CLHS 5.1.2.3).
689 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
690 * bug fix: repair crash in x86oid darwin signal handling emulation
691 when built with certain compilers.
692 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
693 rotation arguments on x86-64. (lp#882151)
694 * bug fix: low-level control flow optimisations could result in bogus
695 code in functions with tail and non-tail calls to local functions on
697 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
698 to emit literal characters > (code-char 4095), for comparisons with
700 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
701 on 64 bit platforms. (lp#881445)
702 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
703 delete the wrong file when using relative pathnames. (lp#882877)
704 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
705 sequences and :KEY NIL.
707 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
708 * enhancement: ASDF has been updated to version 2.017.
709 * enhancement: the --core command line option now accepts binaries with
711 * enhancement: when built with :sb-core-compression, core files (regular
712 or executable) can be compressed with zlib. Use the :COMPRESSION
713 argument to SAVE-LISP-AND-DIE to specify a compression level.
714 * enhancement: --[no-]merge-core-pages determines whether the runtime
715 hints the operating system that identical core pages between SBCL
716 processes should share the same physical memory. Default is to only
717 enable this for compressed cores.
718 * optimization: SLEEP no longer conses.
719 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
720 or bit-vectors when using the standard pretty-print dispatch table.
721 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
723 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
724 AREF, CHAR, etc. (lp#826971)
725 * bug fix: compiler-errors causes by integer arguments with composed of
726 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
727 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
728 expressions. (lp#770184)
729 * bug fix: complex single float literals are correctly aligned when used
730 as arguments of arithmetic operators.
731 * bug fix: on 32-bit platforms, rounding of double floats larger than a
732 fixnum is correct. (reported by Peter Keller)
733 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
734 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
736 * bug fix: redefining classes such that slots with custom allocation are
737 added or removed works again.
739 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
740 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
741 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
742 MAKE-SOCKET-STREAM if using SERVE-EVENT.
743 * enhancement: added support for socket keepalive timeout intervals
744 and probe counts on Linux.
745 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
746 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
747 * enhancement: added new toplevel options --quit and --non-interactive
749 * enhancement: the Windows port of SBCL now builds and runs on Wine
750 (thanks to Anton Kovalenko).
751 * enhancement: more, and more correct, SSE instruction definitions on
752 x86-64 (thanks to Alexander Gavrilov).
753 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
754 to help the processor execute spin loops, when applicable. Currently
755 implemented for x86 and x86-64.
756 * optimization: unsigned integer divisions by a constant are implemented
757 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
758 * optimization: improved type-derivation for LOAD-TIME-VALUE.
759 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
760 instructions. (lp#814688)
761 * bug fix: COERCE to unfinalized extended sequence classes now works.
762 (reported by Jan Moringen; lp#815155)
763 * bug fix: a compiler error during typecheck generation, reported by Eric
765 * bug fix: obsolete instance protocol fires when shared slots are added
767 * bug fix: fixed-format floating point printing with scaling factors.
769 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
770 backtraces. (lp#818460)
771 * bug fix: better backtraces for interrupted syscall frames on x86.
773 * bug fix: SSE comparison instructions can be disassembled even when one
774 operand is in memory. (lp#814702)
775 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
776 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
777 type information associated with the VALUES form.
778 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
780 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
781 first write (lp#561642).
782 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
783 * bug fix: bound propagation involving conversion of large bignums to
784 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
786 * bug fix: &REST to &MORE conversion still works in unsafe call to known
787 functions; reported by Lutz Euler (lp#826459).
788 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
791 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
792 * enhancement: errors from FD handlers now provide a restart to remove
793 the offending handler.
794 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
796 * enhancement: location of user or system initialization file can now easily
797 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
798 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
799 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
800 the thunk, as a keyword argument, :arguments.
801 * enhancement: constraint propagation is simplified (and sped up) when
802 COMPILATION-SPEED > SPEED.
803 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
804 * enhancement: debugger understands &MORE arguments better.
805 * optimization: extracting bits of a single-float on x86-64 has been
806 optimized. (lp#555201)
807 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
808 when (> SPEED SPACE).
809 * optimization: local call trampolines (x86 and x86-64) are emitted
811 * optimization: implicit value cells for dynamic-extent closed-over bindings
812 on x86 and x86-64 can hold unboxed values as well.
813 * meta-optimization: improved compilation speed, especially for large
814 functions. (lp#792363 and lp#394206)
815 * bug fix: bound derivation for floating point operations is now more
816 careful about rounding possibly closing open bounds. (lp#793771)
817 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
818 backwards incompatible change in 1.0.48.27)
819 * bug fix: occasional debugger errors in when a type-error occured in a
820 function with dynamic-extent &rest list.
821 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
822 boa-construtors can be used to initialized structure slots.
823 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
824 (lp#795705, regression)
825 * bug fix: DIRECTORY works better on logical pathnames.
826 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
827 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
828 * bug fix: the compiler no longer constant-folds NaNs in
829 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
830 * bug fix: FORMAT now handles floating point rounding correct, eg.
831 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
833 * bug fix: style warning during lambda-list introspection of generic
834 functions with both optional and key argments.
835 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
837 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
840 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
841 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
842 interrupts for its body.
843 * enhancement: source locations are now available for files loaded as
844 source, compile-time-too evaluation, and initialization files.
845 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
846 virtual source-file information, eg. overriding input-file of COMPILE-FILE
847 when a temporary file is used for compilation.
848 * enhancement: ASDF has been updated to version 2.015.3.
849 * enhancement: backtraces involving frames from the default evaluator are
851 * enhancement: RUN-PROGRAM works with user-defined binary input and output
853 * enhancement: more informative compile-time warnings and runtime errors for
854 type-errors detected at compile-time.
855 * enhancement: deadlock detection for mutexes and spinlocks.
856 * enhancement: dynamic-extent for &rest lists stack allocate only their
857 spines, not their argumets. While portable code should not rely on this,
858 particularly in combination with inlining, it should make dynamic-extent
859 easier to use safely.
860 * enhancement: SB-POSIX improvements:
861 ** WNOHANG and WUNTRACED are exported.
862 ** SYSCALL-ERROR now also provides the name of the failing system call.
863 * enhancement: --script improvements:
864 ** errors on standard input, output, and error streams are handled and
865 cause scripts to exit silently, making them easier to use in shell
867 ** backtraces from scripts now go to standard error instead of the
868 terminal even if one is available.
869 ** --script can be an argument, causing the script to be loaded from
871 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
872 strings to foreign memory.
873 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
874 a file, making it easier to understand heap dynamics.
875 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
876 allows the compiler to automatically elide rest-list allocation so long as
877 the call sites are in functions that the compiler knows cannot escape.
879 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
880 especially in safe code when none of the required arguments have changed
882 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
883 uninterruptible, as well as blocking reads from socket streams created
884 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
885 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
886 from the to-char if the from-char is not a dispatch-macro character.
887 * bug fix: references to undefined variables in function calls that are
888 optimized away now signal a runtime error. (lp#722734)
889 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
890 types from a function defined in the same file. (regression from
892 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
894 * bug fix: spurious errors during QUIT when standard streams were closed.
896 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
897 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
898 years, is now no longer supported.
899 * enhancement: read() and write() have been added to SB-POSIX.
900 * enhancement: types of DEFSTRUCT constructors are proclaimed more
901 accurately, allowing better typechecking of call-sites.
902 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
903 are no longer caught. (reverted to pre 1.0.34 behaviour)
904 * optimization: slightly faster ISQRT. (lp#713343)
905 * bug fix: better support for Solaris /bin/sh in sh-based tests.
906 * bug fix: TRACE behaves better when attempting to trace undefined
907 functions. (lp#740717)
908 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
909 to (FUNCALL #'(LAMBDA ...) ...).
910 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
911 a compile-time error. (lp#720382)
912 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
914 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
915 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
916 optimization. (regression from 1.0.45.18/1.0.46.15)
917 * bug fix: package locks did not protects against compile-time side-effects
918 of DEFUN. (lp#675584)
919 * bug fix: --dynamic-space-size argument is validated more carefully.
921 * bug fix: memory fault from printing a malformed simple-condition.
923 * bug fix: redefining classes so that slot-definition classes change now
924 engages the obsolete instance protocol. (lp#766271)
925 * bug fix: constant improper lists could break source coverage recording.
927 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
930 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
931 * bug fix: fix mach port rights leaks in mach exception handling code on
932 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
934 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
935 * enhancement: redefinition warnings for macros from different files. (lp#434657)
936 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
937 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
938 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
939 processed using EVAL -- now the appropriate toplevel form is reported instead.
940 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
941 declarations. (lp#726331)
942 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
943 that NIL/NULL is excluded from the type.
944 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
946 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
948 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
949 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
950 stack-allocated values out of their dynamic-extent. (lp#310175)
951 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
952 x86-64 builds caused a type-error.
953 * bug fix: calling COMPILE with something else than a lambda-expression as the
954 second argument reports a more sensible error. (lp#718905)
955 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
956 are detected. (lp#520607)
957 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
959 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
960 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
961 methods. (regression from 1.0.45.18)
962 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
963 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
964 * bug fix: several foreign functions accepting string also accepted NIL and
965 consequently caused a memory fault at 0 now signal a type-error instead.
967 * bug fix: under rare circumstances, constraint propagation could rewrite a
968 variable reference to refer to a variable not in scope, causing an error
969 during physical environment analysis when attempting to close over the
970 variable. (lp#551227)
971 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
973 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
974 * enhancement: largefile support on Solaris.
975 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
976 arguments (lp#710017)
977 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
978 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
980 * optimization: ERROR and CERROR are approximately 5 times faster.
981 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
982 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
983 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
984 up instance creation in those cases.
985 * optimization: arithmetic operations with multiple constant arguments in now
986 have them reduced at compile-time. (lp#676414)
987 * optimization: determining current character position on string-streams for
988 pretty-printing was overly slow.
989 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
990 lifetime analysis to overwrite closed-over variables (lp#681092).
991 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
992 were not handled correctly (lp#713063).
993 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
995 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
996 mistake. (lp#667297).
997 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
998 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
999 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1000 unintern the wrong symbol with the same name. (lp#693796)
1001 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1002 making it possible to restore the initial table if it has been messed up.
1005 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1006 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1007 Refer to documentation for details.
1008 * enhancement: ASDF has been updated to version 2.010.
1009 * optimization: mutated closed-over variables that are only accessed by
1010 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1011 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1012 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1013 * optimization: UNWIND-PROTECT cleanup functions are now declared
1015 * bug fix: backtracing function with &REST arguments now shows the full
1016 argument list. (lp#310173)
1017 * bug fix: return types for functions with complex lambda-lists are now
1018 derived properly (lp#384892)
1019 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1020 long string arguments slowed the compiler down to a crawl.
1021 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1022 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1023 in the DEFMETHOD body.
1024 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1025 messages, being instead replaced with the corresponding function name.
1026 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1027 operators. (lp#309448)
1029 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1030 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1031 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1032 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1034 * enhancement: default dynamic-space size can be configured at build-time
1035 without touching source, using the --dynamic-space-size argument to make.sh.
1036 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1037 qualities, and mentions ALWAYS-BOUND declarations.
1038 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1040 * enhancement: ASDF has been updated to 2.009.
1041 * enhancement: the system detects known type-erros in calls better,
1042 signalling a full warning about violated proclaimed FTYPEs and violations
1043 of derived FTYPEs within the same file, including self-calls.
1044 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1045 * optimization: constant-folding exploits numeric and character types, in
1046 addition member types.
1047 * optimization: numeric, character and member types that are inhabited by
1048 exactly one value are tested with EQL.
1049 * optimization: more conditional branches are eliminated during IR1.
1050 Branches are simplified before performing if/if-conversion, and simple
1051 equivalent branches (that only read the same constant or variable) are
1053 * improvements to the Windows port:
1054 ** change: canonical unparsing form for pathname namestrings now uses / as
1055 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1056 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1057 on Windows. (thanks to Kalyanov Dmitry)
1058 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1060 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1061 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1062 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1063 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1065 * bug fix: interrupts arriving during CL:OPEN caused an error.
1066 * bug fix: overeager character buffering could cause input to block
1067 spuriously when reading from a pipe (lp#643686)
1068 * bug fix: more efficient timer expiry should avoid starvation on systems
1069 where number of SIGALRMs per second is restricted. (lp#375515)
1070 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1071 * bug fix: compile-times no longer scale linearly with the size of
1072 quoted lists in source-code. (lp#654289)
1073 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1074 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1075 so badly. (lp#654485)
1076 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1077 an error for eg. STRUCTURE. (lp#458015)
1078 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1079 (lp#613871, thanks to Roman Marynchak)
1080 * bug fix: more reliable &REST list type derivation. (lp#655203)
1081 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1082 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1083 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1084 also declared NOTINLINE. (lp#655581)
1085 * bug fix: the compiler could attempt to emit constant left shifts of
1086 greater value than n-word-bits. (lp#309063)
1087 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1088 type information for the function being set. (lp#659220)
1089 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1090 containing self-calls were recompiled with a new signature, and failed
1091 to warn when a self-call using the old signature was left in. (lp#655126)
1092 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1093 :DEFAULT when the default external had character size other than 8 bits.
1095 * bug fix: derived types of functions in the same file were implicitly
1096 trusted, leading to potential heap corruption when those function were
1097 defined incompatibly. (lp#657499)
1098 * bug fix: existing ASDF source registries are ignored when building
1099 contribs (lp#659105)
1100 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1101 (lp#655824, thanks to Roman Marynchak)
1102 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1103 package-lock violation was detected. (lp#660752)
1104 * bug fix: the system can store different docstrings for a single function
1105 under different names. (lp#661631, regression from 1.0.29.24)
1106 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1107 properly. (lp#384801)
1108 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1109 of specified length could confuse the type derivation in unsafe code.
1111 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1112 fork with multiple Lisp threads running is made on every platform,
1113 not just Darwin. (lp#451111)
1114 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1115 around when core was saved, which could cause undefined behaviour when the
1117 * bug fix: Allow UNTRACE of functions that are no longer defined
1118 (lp#667657, thanks to Attila Lendvai)
1119 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1120 compile-time warning (lp#664373, thanks to Stas Boukarev)
1122 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1123 * incompatible change: FD-STREAMS no longer participate in the serve-event
1124 event-loop by default. (lp#316072)
1125 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1126 affects streams from CL:OPEN.
1127 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1128 default, but this is liable to change: applications needing serve-event
1129 for socket streams should explicitly request it using :SERVE-EVENTS T
1131 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1133 * enhancement: CLOS effective method functions and defclass slot typechecking
1134 function now have debug names for use in backtraces and profiles.
1135 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1137 * enhancement: symbols are printed using fully qualified names in several
1138 error and warning messages which are often associated with package
1139 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1140 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1141 thanks to Andrew Golding)
1142 * bug fix: reading /proc files on Linux works. (lp#425199)
1143 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1145 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1146 breaking code that tried to write the value of a printer control variable.
1147 (lp#581564, thanks to Stas Boukarev)
1148 * bug fix: WRITE compiler macro did not handle output stream designators
1149 correctly. (lp#598374, thanks to Stas Boukarev)
1150 * bug fix: better availability of names of foreign functions in backtraces
1151 on Linux. (lp#626962, thanks to Stas Boukarev)
1152 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1153 lp#627581, thanks to Josh Elsasser and Jim Wise)
1154 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1155 thanks to Josh Elsasser)
1156 * bug fix: using aliases for builtin classes as defmethod specializers
1157 without adding DEFTYPEs for them works. (lp#618387)
1158 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1160 * bug fix: legally dynamic-extent lists and vectors used as
1161 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1162 * bug fix: inline-expansion creating references to dead lambda-variables
1163 (lp#454681, thanks to Alexey Dejneka)
1164 * bug fix: better error message for bogus numerical arguments to RANDOM.
1165 (lp#598986, thanks to Stas Boukarev)
1166 * bug fix: the compiler occasionally inlined references from incompatible
1167 environments occurs. (lp#308951)
1168 * bug fix: the compiler threw an error when trying to compile a local
1169 function (labels or flet) known to take a specialized complex argument.
1170 (not in launchpad, reported by sykopomp in #lispgames)
1171 * bug fix: package-locks failed to protect against compile-time effects of
1172 DEFUN when the symbol previously had a macro definition. (lp#576637)
1173 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1174 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1175 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1176 * bug fix: evaluation in debugger REPL works using the global context when
1177 in frames that do not have sufficient debug information.
1178 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1180 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1182 * bug fix: interrupt taking longer than the requested period caused SLEEP
1183 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1185 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1187 ** Cross-compilation host is now specified to make.sh using
1188 command-line argument --xc-host=<command> instead of a positional
1189 argument. (thanks to Daniel Herring)
1190 ** Install location can be specified to make.sh using command-line
1191 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1192 * optimization: The default implementation of
1193 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1194 * enhancement: Explicit memory barrier operations are now available for use
1195 by multithreaded code. See documentation for details.
1196 * enhancement: Experimental support for threading on Linux/PPC.
1197 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1198 * bug fix: EXPT signals an error if first argument is a zero and second
1199 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1200 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1201 (lp#576594, thanks to Roman Marynchak)
1202 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1203 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1205 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1206 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1207 cached, leading to many fewer expensive calls to
1208 COMPUTE-APPLICABLE-METHODS.
1209 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1210 CLASS argument, search for and call an appropriate optimized ctor function
1212 * bug fix: WRITE always returns the correct value.
1214 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1215 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1216 * bug fix: Name conflicts between symbols passed as arguments to a single
1217 call to IMPORT no longer add multiple symbols with the same name to the
1218 package (detectable via DO-SYMBOLS).
1219 * bug fix: support building without the dlshim on darwin x86 and x86-64
1221 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1223 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1224 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1226 * bug fix: linkage-table entries on PPC now no longer overflow their
1227 space allocation (potentially causing crashes if they are written out
1229 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1230 platforms, preventing the GC from seeing stale pointers on the control
1231 stack in subsequent GCs (which would, and does, break invariants).
1232 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1233 * bug fix: Literal characters with code points greater than about 32767
1234 now work on PPC UNICODE builds.
1235 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1236 high order bits are explicitly cleared out. In some contrived situations,
1237 this could lead to wrong results in mixed real/complex float arithmetic.
1238 * bug fix: Fix function/macro redefinition warnings when building with
1239 clisp. (lp#576787, thanks to Josh Elsasser)
1240 * new platform: experimental support for ppc/openbsd (thanks to Josh
1242 * bug fix: Floating-point traps now work on ppc/linux.
1244 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1245 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1246 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1247 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1248 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1249 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1250 SB-THREAD:GRAB-MUTEX.
1251 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1252 contain additional data structures and tools for concurrent programming;
1253 at the moment it contains a lock-free queue, and a lock-free mailbox
1255 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1256 GET-MUTEX but takes &key rather than &optional parameters. Also added
1257 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1259 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1260 SB-THREAD:WAIT-ON-SEMAPHORE.
1261 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1263 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1264 conditions to defer the deadline for forever.
1265 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1267 * enhancement: errors from NO-APPLICABLE-METHOD and
1268 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1269 generic function call.
1270 * enhancement: SB-BSD-SOCKET improvements
1271 ** sockets and socket streams now have a more informative printed
1272 representation based on the corresponding SOCKET-NAME and
1274 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1276 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1277 CL:CLOSE when appropriate, and no longer disassociates the stream
1278 from the socket if close failed. (lp#543951)
1279 * improvements to the instrumenting profiler
1280 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1281 ** optimization: counters no longer use locks for the overflow mode.
1282 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1283 incurred an off-by-one miscount.
1284 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1285 * enhancement: improved DEFMETHOD pretty-printing.
1286 * enhancement: perform range reduction when arguments are too large for
1287 x87's transcendentals (instead of returning 0). (lp#327192)
1288 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1289 some of CL-PPCRE's macros. (lp#570079)
1290 * enhancement: our machine code is slightly less hostile to valgrind on
1292 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1293 to Robert Swindells and Aleksej Saushev)
1294 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1295 * bug fix: a rare case of startup-time page table corruption.
1296 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1297 to timeouts could be left in an inconsistent state.
1298 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1299 * bug fix: misoptimization of multiplication by one in
1300 (SB-C::FLOAT-ACCURACY 0) policies.
1301 * bug fix: miscounts in SB-PROFILE.
1302 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1303 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1304 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1305 up itself" (March 2010) for further details.
1306 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1307 against length of the list if the element is found before the specified
1308 END is reached. (thanks to Alec Berryman, lp#554385)
1309 * bug fix: errors signalled during package graph modification no longer
1310 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1311 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1312 :SB-DOC feature. (lp#552564)
1313 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1314 * bug fix: more robust runtime executable path detection. (lp#375549)
1315 * bug fix: GCD always returns positive values. (lp#413680)
1316 * bug fix: Converting division to multiplication by reciprocal handles
1318 * bug fix: We were too eager in eliding range reduction tests on x87.
1319 The maximal magnitude is 2^63, not 2^64.
1320 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1322 * bug fix: Maybe restore buildability on Alpha.
1323 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1325 * bug fix: RANDOM-STATE can be printed readably again.
1326 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1327 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1328 types) could result in type mismatches during compilation.
1330 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1331 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1332 stack frame thrown from.
1333 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1334 compiler optimization qualities inside dynamic extent of its body.
1335 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1336 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1338 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1339 constraint propgation, allowing better compilation eg. when used to
1340 access structures with WITH-SLOTS. (lp#520366)
1341 * optimization: the compiler is now more aware of the type of the underlying
1342 storage vector for multidimensional simple arrays resulting in better code
1343 for accessing such arrays.
1344 * optimization: passing NIL as the environment argument to TYPEP no longer
1345 inhibits optimizing it. (lp#309788)
1346 * optimization: more efficient register usage when handling single-float
1347 arguments on x86-64. (thanks to Lutz Euler)
1348 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1349 pre-allocated temporary vectors. (lp#496249)
1350 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1351 in :INITIAL-CONTENTS. (lp#523612)
1352 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1353 functions. (lp#524707)
1354 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1355 WITH-SLOTS usages during compilation.
1356 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1357 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1358 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1359 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1360 instruction (tested on x86oid linux with ud2-breakpoints).
1361 * bug fix: slam.sh now works on win32.
1362 * bug fix: better differences of numeric types. (lp#309124)
1363 * bug fix: arrays declared intersection and union types can have their
1364 upgraded element type derived. (lp#316078)
1365 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1366 threads started during profiling. (lp#472499)
1367 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1369 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1370 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1371 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1372 values instead of signaling an error. (lp#309093)
1373 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1375 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1376 declarations (lp#497321)
1377 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1378 and failed to detect circular lists (lp#452008)
1379 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1381 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1382 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1383 due to it, so that handlers can run.
1384 * bug fix: reparsing undefined types if they have become defined since
1385 parsing. (lp#309128)
1386 * bug fix: missing &REST type in a proclamation for a function with both
1387 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1388 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1389 expanded calls (lp#542174)
1390 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1391 than just at toplevel form.
1393 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1394 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1395 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1396 but work on type specifiers.
1397 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1398 to name a type specifier.
1399 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1400 specifier is valid where "valid" basically means "would be accepted as
1401 second argument of TYPEP".
1402 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1403 returns the function's declared, or derived FTYPE.
1404 * new feature: SB-POSIX now supports accessing the d_ino member of
1405 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1406 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1407 provide for seeding a RANDOM-STATE object with user-provided data or
1408 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1409 attempt to initialize the returned state from the operating system's
1410 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1411 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1412 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1413 * bug fix: Fix grammar and style issues for the docstrings of
1414 printer-related variables and functions. (Thanks to mon_key; launchpad
1416 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1418 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1419 in a row even though a handler defered the deadline long into the
1421 * bug fix: A deadline handler was run without interrupts enabled for a
1422 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1423 in infinitely spinning, non-killable threads.
1424 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1425 before reaching the erring stack frame.
1426 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1427 real power. (launchpad bug lp#525949)
1428 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1429 GENCGC platforms. (launchpad bug lp#529014)
1430 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1431 (launchpad bug lp#525916)
1432 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1433 (Thanks to Robert Goldman)
1435 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1436 * optimization: ROUND with a single single-float or double-float argument
1437 is properly inlined when possible.
1438 * optimization: Slightly better code is generated for integer<->float
1439 conversions and for single-float<->double-float conversions on x86-64.
1440 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1441 code for 32-bit and 64-bit rotations on x86-64.
1442 * bug fix: The install script changes the ownership of directories as well
1443 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1444 launchpad bug lp#508485)
1445 * bug fix: TRUNCATE with a single single-float or double-float argument is
1446 properly inlined when possible. (launchpad bug lp#489388)
1447 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1448 no longer causes a compiler error on x86 and ppc.
1449 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1450 always relative to *READTABLE* rather than the passed argument.
1452 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1453 * minor incompatible change: threading support is now enabled by default
1455 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1457 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1458 are now caught and reported just like errors during macroexpansion.
1459 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1460 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1461 * enhancement: ASDF systems can now depends on SB-QUEUE.
1462 * fixes and improvements related to Unicode and external formats:
1463 ** bug fix: error handling and restart usage in the ucs-2 external format
1465 ** there is now an implementation of the ucs-4 external format.
1466 ** the utf-16 and utf-32 external formats are supported.
1467 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1468 in the environment. setenv() and unsetenv() are also provided. (reported by
1469 Fare Rideau; launchpad bug lp#460455)
1470 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1471 loading. This ensures sensible errors for .FASL files from other
1472 implementations on case-insensitive filesystems. (reported by Willem
1473 Broekema; launchpad bug lp#489417)
1474 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1475 Willem Broekema; launchpad bug lp#489698).
1476 * bug fix: some minor code rearrangements to reenable warning-free building
1477 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1478 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1480 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1483 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1484 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1485 * improvement: support O_LARGEFILE access to files larger than 2GB on
1486 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1487 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1488 definitions for methods specializing on the passed class itself.
1489 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1490 definitions for methods specializing on the passed class itself, or on
1492 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1493 about itself during the build (e.g. for M-? in Slime), if this flag is
1494 enabled in customize-target-features.lisp. This will increase the core
1495 size by about 5-6mb, though, so it's mostly interesting to SBCL
1497 * new feature: various GENCGC tuning parameters have been experimentally
1498 documented and exported from SB-EXT. See documentation for details.
1499 * fixes and improvements related to Unicode and external formats:
1500 ** the Unicode character database has been upgraded to the
1501 Unicode 5.2 standard, giving names and properties to a number of new
1502 characters, and providing a few extra characters with case
1504 ** improvement: restarts for providing replacement input/output on coding
1505 errors for fd-stream external formats.
1506 ** improvement: where :<encoding> is a keyword corresponding to an
1507 external format the system supports, it is now possible to specify
1508 (:<encoding> :replacement <character>) as an external format which will
1509 automatically substitute <character> on encoding or decoding errors for
1510 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1512 ** improvement: the file streams underlying the standard streams (such as
1513 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1514 which uses the replacement mechanism to handle encoding errors,
1515 preventing various infinite error chains and unrecoverable I/O
1517 ** minor incompatible change: the utf-8 external format now correctly
1518 refuses to encode Lisp characters in the surrogate range (char-codes
1519 between #xd800 and #xdfff).
1520 ** fix a typo preventing conversion of strings into octet vectors
1521 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1523 ** fix a bug in the octet multibyte handling of decoding errors and the
1524 USE-VALUE restart. (launchpad bug lp#314939)
1525 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1526 restart on fd-stream decoding errors.
1527 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1528 error is near the end of file.
1529 ** fix a double-error case in unibyte octet conversions, when the first
1530 use of USE-VALUE is ignored.
1531 ** fix bugs in handling of undefined code points in unibyte encodings.
1532 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1533 streams after an UNREAD-CHAR.
1534 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1535 object is allocated in a boxed region of dynamic space.
1536 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1537 fork with multiple Lisp threads running is made, instead of going
1538 ahead with unpredictable consequences. (reported by Leslie Polzer)
1539 * bug fix: uses of slot accessors on specialized method parameters within
1540 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1541 error while finalizing the class. This fix may cause classes with slot
1542 accessors to be finalized later than previously. (reported by Lars Rune
1543 Nøstdal; launchpad bug lp#473699)
1544 * bug fix: restore buildability on the MIPS platform. (regression from
1545 1.0.30.38, reported by Samium Gromoff)
1546 * bug fix: inspecting closures is less likely to fail with a type error.
1547 * bug fix: no timer starvation when setting the system clock back.
1548 (launchpad bug lp#460283)
1549 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1550 standard pprint dispatch table as specified by CLHS.
1551 * bug fix: give CLISP a hint about a type declaration to enable it to build
1552 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1554 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1555 (reported by Attila Lendvai; launchpad bug lp#310132)
1556 * bug fix: distinguish in type specifiers between arrays that might be
1557 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1558 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1559 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1560 * bug fix: setting the value of a symbol-macro within a method in the
1561 presence of type declarations works properly again. (reported by Iban
1562 Hatchondo; launchpad bug lp#485019)
1564 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1565 * optimization: faster FIND and POSITION on strings of unknown element type
1566 in high SPEED policies. (thanks to Karol Swietlicki)
1567 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1569 * improvement: better error signalling for bogus parameter specializer names
1570 in DEFMETHOD forms (reported by Pluijzer)
1571 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1573 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1575 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1576 removes previous default initargs (reported by Lars Rune Nøstdal and
1578 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1579 lambda-lists. (reported by Peter Seibel)
1580 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1581 correctly when starting from an executable core without saved runtime
1582 options (reported by Faré Rideau, thanks to Zach Beane)
1583 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1584 an optimization note instead. (reported by Martin Cracauer)
1585 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1586 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1587 new process group if it doesn't need to share stdin with the sbcl
1588 process. (thanks to Leslie Polzer)
1589 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1590 (reported by Stanislaw Halik)
1592 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1593 * improvement: stack allocation is should now be possible in all nested
1594 inlining cases: failure to stack allocate when equivalent code is manually
1595 open coded is now considered a bug.
1596 * improvements related to Unicode:
1597 ** the Unicode character database has been upgraded to the
1598 Unicode 5.1 standard, giving names and properties to a number of new
1599 characters, and providing a few extra characters with case
1601 ** the system now recognizes and produces names for Unicode Hangul
1602 syllable characters.
1603 ** the EBCDIC-US external-format is now supported for octet operations
1604 (as well as for stream operations).
1605 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1606 be used to output toplevel compile-time effects into a separate .CFASL
1608 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1609 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1611 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1613 * optimization: division of floating point numbers by constants uses
1614 multiplication by reciprocal when an exact reciprocal exists.
1615 * optimization: multiplication of single- and double-floats floats by
1616 constant two has been optimized.
1617 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1618 sufficient type information is available. (thanks to Leslie Polzer)
1619 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1620 known structure objects are as efficient as defstruct generated accessors.
1621 * optimization: unused vector creation can now be optimized away.
1622 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1623 * improvement: a STYLE-WARNING is signalled when a generic function
1624 clobbers an earlier FTYPE proclamation.
1625 * improvement: the compiler is able to track the effective type of
1626 generic function across method addition and removal even in the
1627 absence of an explicit DEFGENERIC.
1628 * improvement: DESCRIBE now reports on symbols naming undefined
1629 but assumed or declared function as well.
1630 * improvement: recompilation of systems using SB-GROVEL now works
1631 (thanks to Leslie Polzer)
1632 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1633 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1635 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1636 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1637 well as user defined declaration names.
1638 ** VARIABLE-INFORMATION is now aware of alien variables.
1639 * improvement: improved address space layout on OpenBSD (thanks to Josh
1641 * improvement: pretty-printing of various Lisp forms has been improved
1642 (thanks to Tobias Rittweiler)
1643 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1644 unused were deleted in safe code. (reported by John Fremlin)
1645 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1647 * bug fix: some out-of-line array predicates were missing (reported by
1649 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1651 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1652 (thanks to Larry D'Anna)
1653 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1654 as well. (reported by Josh Elsasser)
1655 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1656 leading to possible attempts to delete the same file twice. See docstring
1657 on DELETE-FILE for details. (reported by John Fremlin)
1658 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1659 designator argument, rather than its truename. (reported by Luis
1661 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1662 information about some array types. (thanks to Luis Oliveira)
1663 * bug fix: moderately complex combinations of inline expansions could
1664 be miscompiled if the result was declared to be dynamic extent.
1665 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1666 form (+ <variable> <integer>) were miscompiled under certain
1668 * bug fix: in some cases no compiler note about failure to stack allocate
1669 was emitted, even if the objects were in fact heap allocated.
1670 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1671 allocation could cause objects users might reasonably expect to
1672 be heap allocated to be stack allocated.
1673 * bug fix: DESCRIBE signalled an error for generic functions under
1674 certain circumstances. (thanks to Leslie Polzer)
1675 * bug fix: Fixed spelling of an error message.
1677 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1678 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1679 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1680 of SB-THREAD:THREAD-ERROR-THREAD.
1681 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1682 * new feature: docstrings for local and anonymous functions are no longer
1683 discarded. (thanks to Leslie Polzer)
1684 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1685 values in other threads.
1686 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1687 about object allocation.
1688 * optimization: division of a real float by a complex float is implemented
1689 with a specialised code sequence.
1690 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1691 keywords is an order of magnitude faster.
1692 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1693 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1694 methods, and similarly for non-standard metaclass classes as long as there
1695 are no methods additional on MAKE-INSTANCE.
1696 * optimization: more efficient type-checks for FIXNUMs when the value
1697 is known to be a signed word on x86 and x86-64.
1698 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1699 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1701 * optimization: compiler is smarter about delegating argument type checks to
1703 * optimization: several character functions are now compiled somewhat more
1704 efficiently. (reported by Lynn Quam)
1705 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1706 * improvement: less unsafe constant folding in floating point arithmetic,
1707 especially for mixed complex/real -float operations.
1708 * optimization: constant double and single floats are stored in native
1709 unboxed format on x86[-64].
1710 * optimization: smarter code for arithmetic operations with constant floats,
1711 complex floats, or integers on x86[-64].
1712 * optimization: smarter code for conjugate/multiplication of float complexes
1713 and abs/negate of floats on x86-64.
1714 * optimization: more efficient complex float and real float operations on
1716 * improvement: complex float division is slightly more stable.
1717 * improvement: DESCRIBE output has been reworked to be easier to read and
1718 contains more pertinent information.
1719 * improvement: failure to provide requested stack allocation compiler notes
1720 provided in all cases (requested stack allocation not happening without a
1721 note being issued is now considered a bug.)
1722 * bug fix: SB-POSIX exports the documented types and functions
1723 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1724 types. (reported by "abhi")
1725 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1726 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1727 (thanks to Paul Khuong)
1728 * bug fix: looping around HANDLER-CASE could silently consume stack space
1729 on each iteration. (reported by "foobar")
1730 * bug fix: better error signalling when calls to functions seeking elements
1731 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1732 (reported by Tobias Rittweiler)
1733 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1734 directory components now works as it used to. (various prolems reported by
1735 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1736 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1737 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1738 * bug fix: bogus undefined variable warnings from fopcompiled references to
1739 global variables. (thanks to Lars Rune Nøstdal)
1740 * bug fix: foreign function names should now appear in backtraces on
1741 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1742 * bug fix: SETF compiler macro documentation strings are not discarded
1744 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1745 (thanks to Alex Plotnick)
1746 * bug fix: SLEEP accepts large integer arguments, truncating them to
1747 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1748 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1749 * bug fix: compiler notes for expensive slot type checks could be emitted
1750 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1752 changes in sbcl-1.0.29 relative to 1.0.28:
1753 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1754 https://bugs.launchpad.net/sbcl
1755 Bugs can be reported directly there, or by sending email to
1756 sbcl-bugs@lists.sourceforge.net
1757 (no subscription required.)
1758 * minor incompatible change: under weak type checking policy integer
1759 types are weakened less aggressively.
1760 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1761 allowed to return, which causes SBCL to quit with exit status 0. Previously
1762 if the function returned with a small integer return value, that value
1763 was accidentally reused as the exit status.
1764 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1765 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1766 :HASH-FUNCTION argument. Refer to user manual for details.
1767 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1769 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1770 microseconds since the Unix epoch on all platforms.
1771 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1772 allows the compiler to safely elide boundedness checks for special
1774 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1775 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1776 efficiency measure for threaded platforms, but also valueable in
1778 * new feature: UNC pathnames are now understood by the system on Windows.
1779 * optimization: the compiler uses a specialized version of FILL when the
1780 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1782 * optimization: accesses to potentially non-simple arrays where element type
1783 is known are 50% faster.
1784 * optimization: compiler now generates faster array typechecking code.
1785 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1787 * optimization: multidimensional array accesses in the absence of type
1788 information regarding array rank are approximately 10% faster due to
1789 open coding of ARRAY-RANK.
1790 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1791 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1793 * optimization: result of call to VECTOR can now be stack allocated.
1794 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1795 as long as the resulting array is one-dimensional and has a known
1796 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1797 length of the list matches the known length of the vector does not
1798 allocate the list as an intermediate step. Ditto for VECTOR and simple
1800 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1801 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1802 known element type, and is known to be simple and one dimensional.
1803 * improvement: SBCL now emits a compiler note where stack allocation was
1804 requested but could not be provided (not in all cases, unfortunately)
1805 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1806 * improvement: pretty-printing loop has been implemented properly. (thanks
1807 to Tobias Rittweiler)
1808 * documentation: CLOS slot typechecing policy has been documented.
1809 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1810 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1811 pointer, leading to memory faults. (thanks to Bart Botta)
1812 * bug fix: better floating point exception handling on x86/OpenBSD.
1813 (thanks to Josh Elsasser)
1814 * bug fix: exit status from QUIT when called under --script was lost
1815 (reported by Hubert Kauker)
1816 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1817 same implementation of FILL to initialize the array, even if a more
1818 efficient one was available (reported by Stas Boukarev, thanks to
1820 * bug fix: potential miscompilation of array stack allocation on x86 and
1821 x86-64. (reported by Time Tossavainen)
1822 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1823 result in their subforms being treated as top level forms. (reported by
1825 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1826 than a machine register could leave garbage in the high bits of the
1827 result register (bug 316325).
1828 * bug fix: disable address space randomization Linux/x86-64 as well,
1829 not just x86-64. (reported by Ken Olum)
1830 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1831 generate incorrect code.
1832 * bug fix: #201; type inference for CONS and ARRAY types could derive
1833 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1834 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1835 could not be assigned to or bound with PROGV. (reported by Lorenz
1837 * bug fix: the value of CL:- in the inspector was the previous expression
1838 evaluated rather than the expression being evaluated.
1839 * bug fix: constants can no longer be locally declared special.
1840 * bug fix: signals delivered to threads started from foreign land (read:
1841 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1842 thread by blocking all signals and resignalling.
1843 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1844 from :INITFORM, if any.
1846 changes in sbcl-1.0.28 relative to 1.0.27:
1847 * a number of bugs in cross-compilation have been fixed, with the ultimate
1848 result that building under (at least) clisp should be much more reliable.
1849 * minor incompatible changes: echo-streams now propagate unread-char to the
1850 underlying input stream, and no longer permit unreading more than one
1852 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1853 frames, allowing for instance more reliable backtraces.
1854 * improvement: the debugger REPL can now reference lexical variables
1855 by name directly for code compiled with (DEBUG 3).
1856 * improvement: errors from malformed declarations now have better source
1857 paths associated with them. (thanks to Tobias Rittweiler)
1858 * optimization: faster local calls on x86/x86-64
1859 * bug fix: some error messages for out-of-bound array indexes confused the
1860 index and the bound. (thanks to Stas Boukarev)
1861 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1863 * bug fix: running regressions tests in shells without OSTYPE set now works.
1864 (reported by Harald Hanche-Olsen)
1865 * bug fix: more robust static space exhaustion signalling from
1866 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1867 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1868 docstring away instead of storing it under names such as (LAMBDA (X)).
1869 (reported by Leslie Polzer)
1870 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1871 (thanks to Ole Arndt for the patch)
1872 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1873 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1874 potentially-invalid effective methods in its cache.
1875 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1876 instances as well (thanks to Paul Khuong)
1877 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1878 SB-POSIX:WAITPID and their C equivalents.
1879 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1881 changes in sbcl-1.0.27 relative to 1.0.26:
1882 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1883 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1884 * improvement: the system either recovers from stack exhaustion or dies
1885 properly as opposed to leaving the user uncertain of whether the handler
1886 trampled on some random memory next to the stack or having to rely on
1887 --lose-on-corruption (which is still a good idea to use in production
1888 because stack exhaustion can happen in signal handlers which will likely
1890 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1891 1.0.25.37, reported by Harald Hanche-Olsen)
1892 * bug fix: work around signal delivery bug in darwin (regression from
1893 1.0.25.44, reported by Sidney Markowitz)
1894 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1896 changes in sbcl-1.0.26 relative to 1.0.25:
1897 * incompatible change: an interruption (be it a function passed to
1898 INTERRUPT-THREAD or a timer function) runs in an environment where
1899 interrupts can be enabled. The interruption can use
1900 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1901 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1902 potentially running out of stack. Keep in mind that in the absence
1903 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1904 acquiring a lock can enable interrupts.
1905 * incompatible change: GC-OFF and GC-ON are removed, as they were
1906 always unsafe. Use WITHOUT-GCING instead.
1907 * new feature: runtime option --disable-ldb
1908 * new feature: runtime option --lose-on-corruption to die at the
1909 slightest hint of possibly non-recoverable errors: running out of
1910 memory, stack, alien stack, binding stack, encountering a memory
1911 fault, etc. In the absence of --lose-on-corruption a warning is
1913 * enhancement: detect binding stack exhaustion
1914 * enhancement: detect alien stack exhaustion on x86/x86-64
1915 * improvement: generally more stable and reliable interrupt handling
1916 * improvement: there is a per thread interruption queue,
1917 interruptions are executed in order of arrival
1918 * improvement: a repeating timer reschedules itself when the it has
1919 finished, but expiration times are spaced equally. If an
1920 expiration time is in the past it will trigger after a short grace
1921 period that may give a chance to other things to run.
1922 * optimization: slightly faster gc on multithreaded builds
1923 * optimization: faster WITHOUT-GCING
1924 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1925 important locks so that the debugger/handler doesn't produce
1926 recursive errors or deadlock.
1927 * bug fix: real-time signals are not used anymore, so no more
1928 hanging when the system wide real-time signal queue gets full.
1929 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1931 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1932 * bug fix: fix random memory faults related to interrupts on alpha
1933 * bug fix: fix random memory faults related to interrupts on sparc
1934 * bug fix: fix deadlocks related to starting threads
1935 * bug fix: fix deadlines on locks on futex platforms
1936 * bug fix: restore errno in signal handlers
1937 * bug fix: fix deadlocks related to hash tables
1938 * bug fix: fix deadlocks in pcl
1940 changes in sbcl-1.0.25 relative to 1.0.24:
1941 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1942 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1943 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1944 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1945 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1946 better name and does not return values so stale on multiprocessor systems.
1947 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1949 * improvement: unithread builds keep track of MUTEX-VALUE.
1950 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1951 stream anymore making it thread safe to have a concurrent reader and
1952 a writer, for instance, in a pipe.
1953 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1954 arguments, making compiler-macros for SETF-functions able to inspect
1955 their constant arguments.
1956 * improvement: COMPILE-FILE reports times with millisecond accuracy
1957 (thanks to Luis Oliveira)
1958 * optimization: CHAR-CODE type derivation has been improved, making
1959 TYPEP elimination on subtypes of CHARACTER work better. (reported
1960 by Tobias Rittweiler, patch by Paul Khuong)
1961 * bug fix: setting alien structure fields of type struct by value now
1962 computes the right offset for the memory copy.
1963 * bug fix: compilation problem involving inlined calls to aliens with
1964 result type VOID. (reported by Ken Olum)
1965 * bug fix: #235a; sequential inline expasion in different policies no
1966 longer reuses the functional from the previous expansion site.
1967 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1968 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1969 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1970 cause an implied type redefinition. Regression from 1.0.21.29.
1971 * bug fix: sign-extension of small signed return values now works with C
1972 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1973 * improvements to the Windows port:
1974 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1975 Westfold, thanks to Rudi Schlatte)
1977 changes in sbcl-1.0.24 relative to 1.0.23:
1978 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1979 vector of a multidimensional SIMPLE-ARRAY.
1980 * new feature: the system now signals a continuable error if standard
1981 readtable modification is attempted. (thanks to Tobias Rittweiler)
1982 * new feature: DIRECTORY has been extended with a non-standard keyword
1983 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1984 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1985 has been robustified and documented better. (thanks to Robert Goldman)
1986 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1987 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1988 * tradeoff: constant FORMAT control strings are now compiled unless
1989 SPACE > SPEED (previously only when SPEED > SPACE.)
1990 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1992 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1994 * bug fix: lexical type declarations are now correctly reported by
1995 SB-CLTL2. (reported by Larry D'Anna)
1996 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1997 using UTF-8 as external format. (thanks to Luis Oliveira)
1998 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1999 are signalled correctly. (thanks to Stas Boukarev)
2000 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2001 designator. (thanks to Tobias Rittweiler)
2002 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2003 designator, and returns T instead of the function. (thanks to
2005 * bug fix: direct superclasses of STANDARD-CLASS and
2006 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2007 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2008 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2009 when no class with the named slot yet exists no longer causes a
2010 compile-time style-warning.
2011 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2012 in safe code. (reported by Didier Verna)
2013 * bug fix: #430; nested structure constructors can stack allocate.
2014 * bug fix: on some 64-bit platforms dynamic space size was truncated
2015 to #xffff0000 bytes. (reported by Benjamin Lambert)
2016 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2017 REPL unusable. (reported by Daniel Herring)
2018 * bug fix: return values of READ-SEQUENCE did not take :START into
2019 account on file streams, regressions since 1.0.12.22. (reported by
2020 Thomas Russ, patch by Paul Khuong)
2021 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2022 method specializer used to confuse permuation vector optimization.
2023 * bug fix: system inserted bogus implicit type declarations for local
2024 special variables in DEFMETHOD bodies.
2025 * bug fix: #354; duplicated frames in backtraces due to
2026 non-tail-call-optimized XEPs to functions with return type NIL
2028 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2029 initializes structure object slots according to DEFSTRUCT initforms,
2030 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2031 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2032 (reported by Bruno Haible and Stephen Wilson)
2033 * bug fix: #395; fill-pointer output streams used now support
2034 element-type BASE-CHAR as well.
2035 * bug fix: compiler error when attempting to derive return value of
2036 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2038 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2040 * bug fix: Mac OS X binaries should now be portable between Leopard
2043 changes in sbcl-1.0.23 relative to 1.0.22:
2044 * enhancement: when disassembling method functions, disassembly
2045 for the associated fast function is also produced.
2046 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2048 * optimization: printing with *PRINT-PRETTY* true is now more
2049 efficient as long as the object being printed doesn't require
2050 special handling by the pretty printer.
2051 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2052 now interact correctly with type declarations.
2053 * partial bug fix: PCL detects infinite recursion during wrapper
2054 validation. (thanks to Attila Lendvai)
2055 * bug fix: #426; nested function calls are inlined properly.
2056 Previously if FOO was an inline function, in calls of the form
2057 (FOO (FOO ...)) the outer call was not inlined.
2058 * bug fix: long long arguments passed in registers to alien
2059 functions on PowerPC Linux and NetBSD are now handled correctly
2060 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2062 changes in sbcl-1.0.22 relative to 1.0.21:
2063 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2064 for the shared object in the current directory, but passes the native
2065 namestring of the designated pathname to the operation system's shared
2066 object loading function as-it.
2067 * minor incompatible change: --disable-debugger toplevel option now takes
2068 effect before processing of initialization files and --eval or --load
2070 * new feature: new commandline argument: --script, which supports
2071 shebang lines. See documentation for details. (based on work by
2073 * new feature: SAVE-LISP-AND-DIE can save current values of
2074 --dynamic-space-size and --control-stack-size in the executable core,
2075 causing it to skip normal runtime option processing. See documentation
2076 for details. (thanks to Zach Beane)
2077 * enhancement: inoccous calls to EVAL or generic functions dispatching
2078 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2079 * enhancement: the system no longer resignals errors from --load and
2080 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2081 associated with the original error to be lost. (thanks to Ariel
2083 * enhancement: :DONT-SAVE keyword argument has been added to
2084 LOAD-SHARED-OBJECT for controlling interaction with
2085 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2086 the effects of an earlier LOAD-SHARED-OBJECT call.
2087 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2088 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2089 provided. (reported by Cedric St-Jean)
2090 * bug fix: circularity handling in the reader did not treat raw
2091 structure slots correctly. (reported by Cedric St-Jean)
2092 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2093 file descriptors when there were none.
2094 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2095 was broken. (reporteed by Willem Broekema)
2096 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2097 pathnames without a directory.
2098 * bug fix: COMPILE-FILE did not warn about undefined variable
2099 references at toplevel, and LOAD of the resulting fasl did
2100 not signal an error.
2101 * bug fix: functions with non-required arguments used to end up with
2102 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2103 * bug fix: redefining a function with non-required arguments didn't
2104 update the system's knowledge about its call signature properly.
2105 * bug fix: fixed #431; incompatible alien record type redefinitions
2106 are detected and handled. (reported by Neil Haven)
2107 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2108 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2110 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2111 after alien stack frames.
2112 * bug fix: strings passed to mk{s,d}temp lacked null termination
2114 changes in sbcl-1.0.21 relative to 1.0.20:
2115 * new feature: the compiler is able to track the effective type of a
2116 generic function across method addition and removal.
2117 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2118 appropriately typed structure slots without locking.
2119 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2120 information like those gathered by TIME using a programming-friendly
2122 * new feature: TIME reports time taken even if the form performs a
2123 non-local transfer of control.
2124 * enhancement: reduced conservativism on GENCGC platforms: on
2125 average 45% less pages pinned (measured from SBCL self build).
2126 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2127 mutate constant symbols or violate declaimed type of the symbol.
2128 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2129 sleeping on the semaphore in heavily contested semaphores.
2130 * bug fix: semaphores and condition variables were not interrupt
2132 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2133 owned by other threads anymore.
2134 * bug fix: FIND on lists called KEY outside the specified
2135 subsequence. (reported by budden)
2136 * bug fix: LOG doesn't use single-float intermediate results when
2137 given mixed integer and double-float arguments, leading to better
2138 precision. (reported by Bob Felts)
2139 * bug fix: LOG with base zero returned values of inconsistent type.
2141 changes in sbcl-1.0.20 relative to 1.0.19:
2142 * minor incompatible change: OPTIMIZE qualities
2143 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2144 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2145 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2146 * documentation: some slot access efficiency guidelines have been
2147 added to the user manual.
2148 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2149 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2150 as ASSOC and MEMEBER.
2151 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2152 to more efficient EQ-comparison versions more often.
2153 * optimization: enhanced derivation of DOLIST iteration variable type
2155 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2157 * optimization: runtime lookup of function definitions can be
2158 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2159 * optimization: compiler is able to derive the return type of
2160 (AREF (THE STRING X) Y) as being CHARACTER.
2161 * optimization: CLRHASH on empty hash-tables no longer does pointless
2162 work. (thanks to Alec Berryman)
2163 * optimization: REPLACE deftransforms don't punt when :START1 or
2165 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2166 no longer emits a code deletion note. (reported by Andrew
2168 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2169 functions with an odd number of &OPTIONAL arguments, a &REST
2170 argument, and one or more &KEY arguments at the call site.
2171 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2172 arguments appeared at call sites as well.
2173 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2174 READ-LINE &co can no longer read from them afterwards. (reported
2176 * bug fix: fixed #427: unused local aliens no longer cause compiler
2177 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2179 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2180 alien-stack leakage. (reported by Andy Hefner)
2181 * bug fix: PROGV signals an error when an attempt to violate declared
2182 type of a variable or bind a constant is made.
2183 * bug fix: SET signals an error when an attempt to violate declared
2184 type of a variable is made.
2185 * bug fix: restart computation during the execution of a restart
2186 test function no longer causes infinite recursion. (reported by
2188 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2189 signals an error. (thanks to Pierre Mai)
2190 * bug fix: EXPORT left symbol unexported in conflict situations.
2191 (thanks to Michael Weber)
2192 * bug fix: correctly handle name conflicts involving CL:NIL.
2193 (thanks to Michael Weber)
2194 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2195 conflicts arising from USEing package with conflicting symbols
2196 correctly. (thanks to Michael Weber)
2198 changes in sbcl-1.0.19 relative to 1.0.18:
2199 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2200 warnings that go otherwise unhandled will be muffled if they are
2201 of the type that's the value of this variable.
2202 * optimization: stack allocation is slightly more efficient on x86
2204 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2205 where a raw slot always is initialized using the initform whose
2206 type is not know sufficiently well a compile-time are now compiled
2207 correctly. (reported by John Morrison)
2208 * bug fix: compiler no longer makes erronous assumptions in the
2209 presence of non-foldable SATISFIES types.
2210 * bug fix: stack analysis missed cleanups of dynamic-extent
2211 arguments in non-let-converted calls to local functions.
2212 * improvements to the Windows port:
2213 ** adjusted address spaces for building on both Win32 and
2214 Win64. (thanks for John Connors)
2215 * fixed some bugs revealed by Paul Dietz' test suite:
2216 ** interval arithmetic during type derivation used inexact integer
2217 to single-float coercions.
2218 ** arithmetic operations involving large integers and single
2219 floats give the same results in compiled and interpreted code.
2220 ** deriving the result type of COERCE no longer signals an error
2221 if the derived type of the second argument is a MEMBER type
2222 containing invalid type specifiers.
2223 ** ADJOIN with constant NIL as second argument works correctly.
2224 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2226 changes in sbcl-1.0.18 relative to 1.0.17:
2227 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2228 profiles only the current thread.
2229 * minor incompatible change: changes to SYMBOL-VALUE of constants
2230 defined with DEFCONSTANT now signal an error.
2231 * enhancement: SB-SPROF now has support for wallclock profiling,
2232 and is also able to profile specific threads. REPORT output
2233 has also additional sorting options.
2234 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2236 * optimization: structure allocation has been improved
2237 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2238 ** out of line constructors are ~10% faster.
2239 ** inline constructors are ~15% faster.
2240 ** inline constructors are capable of dynamic extent allocation
2241 (generally on x86 and x86-64, in some cases on other platforms
2243 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2245 * optimization: file compiler is now able to coalesce non-circular
2246 lists, non-base strings, and bit-vectors. Additionally, constants
2247 are never referenced through SYMBOL-VALUE at runtime.
2248 * optimization: code defining methods on PRINT-OBJECT (and other
2249 generic functions in the COMMON-LISP package) now loads faster.
2250 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2252 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2253 fasl is now deleted. (reported by Attila Lendvai)
2254 * bug fix: READ-LINE always returned NIL for the last line in files.
2255 (reported by Yoshinori Tahara)
2256 * bug fix: more accurate disassembly annotations of foreign function
2257 calls. (thanks to Andy Hefner)
2258 * bug fix: trimming non-simple strings and non-string string
2259 designators when the there is nothing to trim works properly.
2260 (thanks to James Knight)
2261 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2262 (thanks to Travis Cross)
2263 * fixed some bugs revealed by Paul Dietz' test suite:
2264 ** NIL is a valid function name (regression at 1.0.13.38)
2265 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2266 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2267 fill pointers properly (regression at 1.0.12.23)
2268 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2269 displacement indices properly (regression at 1.0.12.23)
2271 changes in sbcl-1.0.17 relative to 1.0.16:
2272 * temporary regression: user code can no longer allocate closure
2273 variable storage on stack, due to bug 419 without explicitly
2274 requesting it. Please consult sbcl-devel for advice if you need to
2275 use this feature in the meanwhile.
2276 * new feature: runtime argument --control-stack-size can be used to
2277 adjust thread default control stack size.
2278 * enhancement: improved TIME output
2279 ** all times are reported using the measured accuracy (milliseconds
2280 for real and GC times, microseconds for everything else.)
2281 ** processor cycle counts on x86 and x86-64.
2282 ** interpreted forms are counted for both evaluator modes.
2283 ** number of lambdas converted by the compiler is reported.
2284 ** CPU percentage report (computed from real and total run time.)
2285 ** more comprehensive run time reporting, using a condenced format
2286 ** interperted form, lambda, and page fault counts are omitted
2288 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2290 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2291 * optimization: two argument forms of LAST are upto ~10% faster
2292 in normal SPEED policies.
2293 * optimization: NCONC no longer needs to heap cons its &REST list
2294 in normal SPEED policies.
2295 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2296 to Sidney Markowitz)
2297 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2298 regression since 1.0.9.1. (thanks to Eric Marsden)
2299 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2300 since 1.0.15.36. (thanks to Paul Khuong)
2301 * bug fix: LAST when always returned the whole list when given a bignum
2302 as the second argument.
2303 * bug fix: dynamic extent allocation of nested lists and vectors
2304 could leak to otherwise accessible parts.
2305 * bug fix: invalid optimization of heap-allocated alien variable
2307 * bug fix: fasl header checking is less vulnerable to different
2308 platform word lengths.
2309 * bug fix: more correct assembler syntax for GNU binutils
2310 2.18.50.0.4 support. (thanks to Marijn Schouten)
2311 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2313 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2314 declarations) successfully. (reported by Attila Lendvai)
2316 changes in sbcl-1.0.16 relative to 1.0.15:
2317 * minor incompatible change: revert the changes to sb-posix's error
2318 signaling added in 1.0.14.
2319 * minor incompatible change: change PROBE-FILE back to returning
2320 NIL whenever we can't get a truename, as was the case before 1.0.14.
2321 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2322 inherits from ERROR instead of just CONDITION.
2323 * new feature: SB-INTROSPECT can provide source locations for instances
2324 as well. (thanks to Tobias Rittweiler)
2325 * optimization: binding special variables now generates smaller code
2326 on threaded platforms.
2327 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2328 and cases where no :TEST is given but the compiler can infer that
2329 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2330 * optimization: better LOGNOT on fixnums.
2331 * optimization: modular arithmetic for a particular requested width
2332 is implemented using a tagged representation unless a better
2333 representation is available.
2334 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2335 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2336 for wellformedness and returns a specialized vector. (reported by
2337 Francois-Rene Rideau)
2338 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2339 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2340 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2341 unscheduling timer at the same time as another timer fires.
2342 * bug fix: don't reschedule timers for dead threads.
2343 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2344 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2345 bogus errors if select() was interrupted.
2346 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2348 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2349 * enhancement: cleaner backtraces for interactive interrupts, as
2350 well as other cases where the interesting frames used to be
2351 obscured by interrupt handling frames.
2352 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2353 now supported, and tracing a whole package using (TRACE "FOO") now
2354 traces SETF-functions as well.
2355 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2356 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2357 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2358 * unreadably printed representation of hash-tables now includes
2360 * bug fix: partially fixed #188: type propagation from assignments
2361 is now more efficient.
2362 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2363 'DOUBLE-FLOAT) are not flushable.
2364 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2365 full address of the object, and none of the tag bits.
2366 * bug fix: readably printing hash-tables now respects other printer
2367 control variables. (reported by Cedric St-Jean)
2368 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2369 keyword with MAKE-HASH-TABLE.
2370 * bug fix: export SB-POSIX:MKSTEMP.
2371 * bug fix: SORT was not interrupt safe.
2372 * bug fix: XREF accounts for the last node of each basic-block as
2374 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2375 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2376 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2377 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2378 create obsolete instances in the case of redefinition or
2379 obsoletion of a superclass. (thanks to Andy Hefner)
2380 * bug fix: Support for the Alpha architecture has been revived; it had
2381 suffered somewhat from lack of maintenance since sbcl-1.0.
2382 * improvements to the Windows port:
2383 ** The system detects the codepage to use at startup, instead of
2384 using the value from the saved core. (thanks to Kei Suzuki)
2386 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2387 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2388 (see documentation for details.)
2389 * revived support for OpenBSD (contributed by Josh Elsasser)
2390 * partially fixed bug #108: ROOM no longer suffers from occasional
2391 (AVER (SAP= CURRENT END)) failures.
2392 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2393 bodies no longer cause a WARNING to be signalled. (reported by
2395 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2396 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2397 the bug in TRUNCATE.) (reported by Michael Weber)
2398 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2399 no samples. (reported by Andy Hefner)
2400 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2401 no longer appear as (NIL ...) frames in backtraces.
2402 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2403 is now actually exported from SB-EXT as documented. (reported by
2405 * bug fix: sb-aclrepl now correctly understands how to inspect
2406 single-floats on 64-bit platforms where single-floats are not boxed.
2407 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2408 yet been finalized. (reported by Levente Meszaros)
2409 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2410 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2411 SBCL-specific optimize qualities.
2413 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2414 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2415 an executable in the search path, and does so in the child
2416 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2417 been removed; it can be found in the CVS history, for somebody who
2418 needs that search behavior (see the manual).
2419 * minor incompatible change: compiler policy re. weakening type
2420 checks has changed: now type checks are weakened only if SAFETY < 2
2422 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2423 unparsing of directory pathnames as files. Analogously,
2424 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2425 filename to parse into a directory pathname.
2426 * enhancement: implicit generic function creation now signals a
2427 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2428 users can bind handlers for and muffle around calls to LOAD.
2429 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2430 to be used (using the default stream external format), and allows
2431 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2432 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2433 strings and vectors whose element-type or simplicity is not fully
2434 known at compile-time.
2435 * optimization: STRING-TRIM and related functions no longer allocate
2436 a new string when no trimming needs to be performed. These functions
2437 are also faster than before when the input string has been declared
2439 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2440 * optimization: READ-LINE is significantly faster for files containing
2442 * optimization: non-open coded uses of character comparison operators
2443 (e.g. char=) no longer cons when called with more than one parameter
2444 on platforms supporting dynamic-extent allocation.
2445 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2446 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2447 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2449 * bug fix: some sequence functions elided bounds checking when
2451 * bug fix: too liberal weakening of union-type checks when SPEED >
2453 * bug fix: more bogus fixnum declarations in ROOM implementation
2456 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2457 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2458 :SYNCHRONIZED argument, which makes the hash-table safe for
2459 concurrent accesses (but not iteration.) See also:
2460 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2461 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2462 * optimization: CONCATENATE on strings is an order of magnitude faster
2463 in code compiled with (> SPEED SPACE).
2464 * optimization: SUBSEQ is ~50% faster on lists.
2465 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2466 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2467 END is smaller then START.
2468 * bug fix: SB-PROFILE will no longer report extra consing for nested
2469 calls to profiled functions.
2470 * bug fix: ROOM implementation had bogus fixnum declarations which
2471 could cause type-errors when calling ROOM on large images.
2472 * bug fix: if file compilation is aborted, the partial fasl is now
2473 deleted, and COMPILE-FILE returns NIL as the primary value.
2474 * bug fix: number of thread safety issues relating to SBCL's internal
2475 hash-table usage have been fixed.
2476 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2477 be returned from its body when the values were being returned
2478 using unknown-values return convection and the W-P-O was wrapped
2479 inside an UNWIND-PROTECT.
2480 * bug fix: sb-posix should now compile again under Windows, enabling
2481 slime to work again.
2483 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2484 * incompatible change: hash-table accessor functions are no longer
2485 automatically protected by locks. Concurrent accesses on the same hash-table
2486 from multiple threads can give inconsistent results or even corrupt the
2487 hash-table completely. Multi-threaded applications should do their own
2488 locking at the correct granularity. In the current implementation it is
2489 still safe to have multiple readers access the same table, but it's not
2490 guaranteed that this property will be maintained in future releases.
2491 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2492 and will signal an error at runtime.
2493 * enhancement: SB-THREAD package now exports a semaphore interface.
2494 * enhancement: CONS can now stack-allocate on x86 and
2495 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2497 * enhancement: nested lists can now be stack allocated on
2498 platforms providing stack allocation support.
2499 * enhancement: dynamic-extent support has been extended to support
2500 cases where there are multiple possible sources for the stack
2502 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2503 if the mutex is uncontested on Linux.
2504 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2505 as specified by the CLHS. (thanks to Tobias Rittweiler)
2506 * bug fix: NaN comparison now works on x86-64.
2507 * bug fix: CLOSE :ABORT T on a stream with pending output now
2509 * bug fix: instances of non-standard metaclasses using standard
2510 instance structure protocol sometimes missed the slot type checks
2512 * bug fix: known functions can be inlined in high-debug code.
2514 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2515 * minor incompatible change: the MSI installer on Windows no longer
2516 associates .lisp and .fasl files with the installed SBCL.
2517 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2518 on Windows. (thanks to Luis Oliviera)
2519 * new feature: SB-CLTL2 contrib module now implements
2520 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2521 * optimization: scavenging weak pointers is now more efficient,
2522 requiring O(1) instead of O(N) per weak pointer to identify
2523 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2524 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2525 method bodies using constant slot-names when the first argument is
2526 a specializer parameter for the method.
2527 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2528 names, when the class of the instance is a direct instance
2529 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2530 as slow as the constant slot-name case.)
2531 * optimization: member type construction is now O(N) instead
2533 * optimization: UNION and NUNION are now O(N+M) for large
2534 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2536 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2537 now more readable in environments like Slime which display it.
2538 (thanks to Tobias C. Rittweiler)
2539 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2540 was able to infer the correct argument type for the object on which
2541 the CAS operation was being performed.
2542 * bug fix: copy propagation interfered with parallel assignment
2543 semantics in local calls. (reported by Paul Khuong)
2544 * bug fix: the signed modular fixnum shift compiled to wrong code on
2545 x86 and x86-64. (spotted by a slight modification to some of
2548 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2549 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2550 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2551 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2553 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2554 and generic function now print the object identity for anonymous
2555 instances. (thanks to Attila Lendvai)
2556 * enhancement: as an extension to MOP, SBCL now supports SETF of
2557 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2558 (thanks to Attila Lendvai)
2559 * enhancement: sb-cover has an alternate annotation mode which puts
2560 the form annotations at the car of the form, instead of annotating
2561 it completely. The benefit of this mode is that it shows better
2562 which forms were instrumented by the compiler.
2563 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2564 by printer control variables. (reported by Dan Corkill)
2565 * bug fix: system leaked memory when delayed output was performed by
2566 the OS in smaller chunks then expected. (thanks to David Smith)
2567 * bug fix: system leaked memory when file streams were not closed
2569 * bug fix: large objects written to slow streams that were modified
2570 after the write could end up with the modified state written to
2571 the underlying file descriptor.
2572 * bug fix: multiple threads operating in parallel on the same stream
2573 could cause buffer-overflows.
2574 * bug fix: source location information is stored correctly
2575 (broken since 1.0.6). This bug would generally show up as the
2576 Slime debugger highlighting the wrong form when the sldb-show-source
2578 * bug fix: Branch forms are again annotated as branches in the sb-cover
2580 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2581 on x86-64. (reported by Gregory Vanuxem)
2582 * bug fix: EQUALP could return wrong results for structures with raw
2583 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2584 word). (reported by Vjacheslav Fyodorov)
2585 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2588 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2589 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2590 atomic compare-and-swap operations on threaded platforms.
2591 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2592 allows assigning a global minimum value to optimization qualities
2593 (overriding proclamations and declarations).
2594 * enhancement: closed over variables can be stack-allocated on x86
2596 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2598 * optimization: slot definition lookup is now O(1). This speeds up
2599 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2600 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2601 * optimization: ASSOC and MEMBER can now be open-coded for all
2602 combinations of keyword arguments when second argument is constant
2603 and SPEED >= SPACE. In other cases a specialized version is
2605 * bug fix: using obsoleted structure instances with TYPEP and
2606 generic functions now signals a sensible error.
2607 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2608 (reported by Kristoffer Kvello)
2609 * bug fix: backtrace construction is now more careful when making
2610 lisp-objects from pointers on the stack, to avoid creating bogus
2611 objects that can be seen by the GC.
2612 * bug fix: defaulting of values in contexts expecting more than 7
2613 variables now works on x86-64. (reported by Christopher Laux)
2614 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2616 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2617 as the property-list of a symbol.
2618 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2619 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2620 situations requested, are once again file-compileable. (reported
2623 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2624 * MOP improvement: support for user-defined subclasses of
2625 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2626 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2627 the expansion of DEFMETHOD, is responsible for generating a form
2628 which creates a list of specializers when evaluated. Additional
2629 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2630 debugging and introspective support.
2631 * minor incompatible change: the (unsupported) spinlock interface
2632 has changed: free spinlock now has the value NIL, and a held spinlock
2633 has the owning thread as its value.
2634 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2635 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2637 * enhancement: name of a socket-stream is now "a socket" instead of
2638 "a constant string".
2639 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2640 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2641 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2642 for generic functions. (Thanks to Tobias C. Rittweiler)
2643 * optimization: bignum printing speed has been improved by 20-40%
2644 (depending on the bignum size.)
2645 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2647 * bug fix: the cache used by the CLOS to store precomputed effective
2648 methods, slot offsets, and constant return values is now thread and
2650 * bug fix: generic function dispatch function updating is now thread
2651 and interrupt safe (in the sense that the known issues have been
2653 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2654 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2655 * bug fix: asdf systems with dependencies to the SB-POSIX or
2656 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2657 * bug fix: interrupt safety of applicable method computation has been
2660 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2661 * new contrib: sb-cover, an experimental code coverage tool, is included
2662 as a contrib module.
2663 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2664 significantly faster.
2665 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2666 produce more efficient code on x86-64 if the compiler can determine
2667 that (+ INDEX <constant>) does not require a bounds check and FOO
2668 has an element type at least 8 bits wide.
2669 * enhancement: a new, experimental synchronous timeout facility is
2670 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2671 * enhancement: when a symbol name conflict error arises, the
2672 conflicting symbols are always printed with a package prefix.
2673 (thanks to Kevin Reid)
2674 * enhancement: stepping is now once again supported on the SPARC and
2675 MIPS platforms. (It is also now more likely to work on CheneyGC
2677 * enhancement: sb-sprof can now also track and report accurate call
2679 * bug fixes: the treatment of non-standard subclasses of
2680 SB-MOP:SPECIALIZER is more correct.
2681 * incompatible change: PURIFY no longer copies the data from the
2682 dynamic space into the static and read-only spaces on platforms
2683 that use the generational garbage collector
2684 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2686 * bug fix: GC race condition occasionally resulting in crashes with
2687 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2689 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2691 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2692 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2693 * bug fix: an asynchronous interrupt could previously leave the
2694 system running with GC inhibited.
2695 * bug fix: a DECLARE form evaluated at top-level now causes an error
2696 rather than silently (or verbosely) returning NIL.
2697 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2698 result in a error being signalled due to source form lookup errors.
2699 (reported by Peter Graves)
2701 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2702 * incompatible change: removed writer methods for host-ent-name,
2703 host-ent-addresses -- changing the values did not update the DNS
2705 * minor incompatible change: changed experimental JOIN-THREAD interface
2706 * documentation: the manual now lists reader and writer methods
2707 in class slot documentation sections. (thanks to Richard M Kreuter)
2708 * documentation: unwinding from asyncronous events has been
2709 documented as unsafe.
2710 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2711 in multithreaded application code.
2712 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2713 platforms. (thanks to James Anderson for the optimization hint)
2714 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2716 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2717 variants no longer cons.
2718 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2719 their NOT- variants no longer cons.
2720 * optimization: EQUAL hash tables no longer use SXHASH for objects
2721 of all data types, but instead use an EQL hash for types for which
2722 EQUAL is the same as EQL.
2723 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2724 are significantly faster.
2725 * optimization: new STRING-OUTPUT-STREAM implementation is much
2726 faster for large outputs and conses 30% less on average.
2727 * enhancement: XREF information is now collected for references made
2728 to global variables using SYMBOL-VALUE and a constant argument.
2729 * enhancement: SIGINT now causes a specific condition
2730 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2731 * bug fix: FILE-POSITION used to signal an error in some cases where
2732 ANSI requires it to return NIL.
2733 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2734 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2735 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2737 * bug fix: bad type declaration in the CLOS implementation has
2738 been fixed. (reported by James Anderson)
2739 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2740 (thanks to Lutz Euler)
2741 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2742 required by the CLHS. (reported by Samium Gromoff)
2743 * bug fix: dead unbound variable references now signal an error.
2744 (reported by Marco Monteiro)
2745 * bug fix: / with an unused value was being deleted in safe code.
2746 (thanks to Marco Monteiro and Kevin Reid)
2747 * bug fix: number of characters that can be written onto a single
2748 line in a file is unlimited.
2749 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2750 been fixed by inhibiting interrupts for when GC is disabled.
2751 * bug fix: some interrupt safety issues with GETHASH, (SETF
2752 GETHASH), CLRHASH and REMHASH have been fixed.
2753 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2754 specifier no longer causes infinite recursion.
2755 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2756 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2757 * bug fix: an &environment argument with the correct variable information
2758 is passed to macros that are expanded during byte compilation.
2759 (reported by Samium Gromoff)
2760 * bug fix: a logic error was causing the hash function for bignums to
2761 have excessive amounts of collisions. (reported by Faré Rideau)
2762 * bug fix: modifying the contents of an array could change the return
2763 value of SXHASH on that array, which is only allowed for strings
2764 and bit vectors. (bug introduced in 0.9.16)
2765 * improvement: the x86-64/darwin port now passes all tests (except
2766 for the debugger tests) but should still be considered
2767 experimental until this is fixed.
2768 * improvement: a style-warning is signaled for CASE (etc) clauses with
2769 duplicate keys. (thanks to Kevin Reid)
2770 * improvement: macos/x86 and macos/x86-64 now use mach exception
2771 handlers for dealing with illegal instructions (for trapping and
2772 error handling) and memory protection violations (for GC).
2774 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2775 * new platform: experimental support for x86-64/darwin (MacOS).
2776 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2777 and getnameinfo sockets functions are used instead of gethostbyaddr
2778 and gethostbyname, on platforms where the newer functions are available.
2779 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2781 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2782 don't print the startup banner, but behave as if --noinform was passed
2783 as a command line argument. (thanks to Kevin Reid)
2784 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2785 * optimization: code using alien values with undeclared types is much faster.
2786 * optimization: the compiler is now able to open code SEARCH in more cases.
2787 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2788 * bug fix: using standardized COMMON-LISP special variables as loop
2789 variables no longer signals bogus package lock violations. (reported
2791 * bug fix: declaring local loop variables to be of a range-limited type
2792 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2793 (reported by Andras Simon)
2794 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2795 bugs remain on x86-64.)
2796 * bug fix: the #= and ## reader macros now interact reasonably with
2797 funcallable instances.
2798 * bug fix: type-checks for function arguments were compiled using the
2799 compiler policy settings of the wrong lexical environment (in 1.0.2
2801 * bug fix: SHADOW accepts characters as string designators, as required
2802 by the spec (thanks to Eric Marsden)
2803 * bug fix: fixed GC safety issues when foreign functions are called with
2804 non-base strings as arguments
2805 * bug fix: more consistent error output for fatal-compiler-warnings, like
2807 * bug fix: functions with proper names were showing up as NIL in
2808 backtraces (reported by Edi Weitz, regression in 1.0.2)
2810 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2811 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2812 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2813 produce more efficient code on the x86 if the compiler can determine
2814 that (+ INDEX <constant>) does not require a bounds check and FOO
2815 has an element type at least 8 bits wide.
2816 * bug fix: references to undefined variables are handled the same way
2817 in toplevel forms as in the normal compiler
2818 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2820 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2821 (thanks to Jon Buller)
2822 * improvement: faster compilation times for complex functions
2823 * improvement: added readlink support to SB-POSIX (thanks to Richard
2826 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2827 * improvement: experimental support for mach exception handling on
2828 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2830 * improvement: support for GBK external format.
2831 (thanks to Chun Tian (binghe))
2832 * improvement: the debugger now displays variables that have been closed
2833 over, in code compiled with (DEBUG 2) or higher
2834 * improvement: support for executable cores on NetBSD (thanks to
2836 * new feature: added a RESTART-FRAME debugger command
2837 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2838 be used to provide an implementation for FILE-POSITION on Gray streams
2839 (thanks to Eric Marsden)
2840 * new feature: add syslog, openlog and closelog support to SB-POSIX
2841 (thanks to Richard Kreuter)
2842 * optimization: the function call overhead in code compiled with
2843 a high DEBUG optimization setting is significantly
2844 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2845 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2846 (thanks to Tony Martinez)
2847 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2848 evaluated once (reported by Kevin Reid)
2849 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2850 works again (thanks to Kilian Sprotte)
2851 * bug fix: an error is signaled for tagbodies with duplicate tags
2852 (thanks to Stephen Wilson)
2853 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2854 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2855 stack frames from alien callbacks.
2856 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2857 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2858 65k pages (thanks to David Woodhouse)
2859 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2861 changes in sbcl-1.0.1 relative to sbcl-1.0:
2862 * new platform: FreeBSD/x86-64, including support for threading.
2863 * new feature: the compiler stores cross-referencing information
2864 about function calls (who-calls), macroexpansion (who-macroexpands)
2865 and special variables (who-binds, who-sets, who-references) for code
2866 compiled with (< SPACE 3). This information is available through the
2867 sb-introspect contrib.
2868 * new feature: users may subclass SEQUENCE, and have instances of
2869 these classes interoperate with standard Common Lisp functions if
2870 a number of methods are defined. (This feature is experimental
2871 and the interface subject to change based on feedback from SBCL
2872 users and the general community)
2873 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2874 x86/x86-64, rather than the previous fixed depth of 8
2875 * improvement: another pthread back-end of mutex "pthread-futex".
2876 * bug fix: non-ascii command-line arguments are processed correctly
2877 (thanks to Yaroslav Kavenchuk)
2878 * bug fix: non-required arguments were not passed correctly when a method
2879 defined using DEFMETHOD was called from a mop-generated method using
2880 CALL-NEXT-METHOD (reported by Pascal Costanza)
2881 * bug fix: recursion is now permitted in accessors through
2882 SLOT-UNBOUND. (reported by Pascal Costanza)
2883 * bug fix: an error was signaled at startup if the HOME environment
2884 variable was defined, but had an empty value (reported by Peter Van Eynde)
2885 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2886 signal a PROGRAM-ERROR, not a BUG.
2887 * bug fix: SB-POSIX:READDIR works when built with large file support.
2888 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2890 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2891 for better automatic indentation support. (thanks to Matt Pillsbury)
2892 * optimization: loading generic functions no longer takes O(n^2) time,
2893 proportional to the amount of methods in the generic function
2894 (reported by Todd Sabin and Jeremy Brown)
2895 * optimization: the FIND and POSITION family of sequence functions
2896 are significantly faster on arrays whose element types have been
2898 * improvements to the Windows port:
2899 ** Intermittent heap corruption problems have been fixed. (thanks
2900 to Alastair Bridgewater)
2901 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2903 ** Lisp is able to unwind foreign exception frames from alien
2904 callbacks. (thanks to Alastair Bridgewater)
2906 changes in sbcl-1.0 relative to sbcl-0.9.18:
2907 * improvement: experimental support for threading on FreeBSD/x86.
2908 (thanks to NIIMI Satoshi)
2909 * improvement: runtime option --dynamic-space-size can be used
2910 to set the size of the dynamic space reserved on startup.
2911 * improvement: floating point modes in effect are now saved in
2912 core, and restored on startup.
2913 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2914 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2915 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2916 threads are not running after *SAVE-HOOKS* have run.
2917 * improvement: writes to CLOS instance slots are type-checked in code
2918 compiled with (SAFETY 3)
2919 * improvement: floating-point exception handling on FreeBSD (thanks to
2921 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2922 (thanks to Zach Beane)
2923 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2925 * improvement: added support for the Shift-JIS external format.
2926 (contributed by NIIMI Satoshi)
2927 * improvement: callbacks are supported on Linux/PPC. (thanks to
2929 * bug fix: compiler bug triggered by a (non-standard) VALUES
2930 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2931 * bug fix: file compiler no longer confuses validated and already
2932 dumped structurres. (reported by Kaersten Poeck)
2933 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2934 fill-pointer signals a type-error as required. (thanks to
2936 * bug fix: disassemly of funcallable instances works.
2937 * bug fix: single stepping on PPC.
2938 * bug fix: fix thread-safety problems in the type system (generally
2939 manifesting as nonsensical errors like "STRING is a bad type specifier
2940 for sequences" or "The value 1 is not of type FIXNUM")
2941 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2942 (reported by Josip Gracin)
2943 * bug fix: an error is signaled for attempts to displace arrays with
2944 incompatible element types (thanks to Mario Mommer)
2945 * bug fix: more correct handling of wide characters in debug info
2946 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2947 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2948 and don't cause extra consing
2949 * optimization: MAP and MAP-INTO are significantly faster on vectors
2950 whose elements types have been declared.
2951 * Improvements to SB-SPROF:
2952 ** Support for allocation profiling
2953 ** Reduced profiling overhead, especially for long profiling runs
2954 * Improvements to the Windows port:
2955 ** floating point exceptions are now reported correctly.
2956 ** stack exhaustion detection works partially.
2957 ** more accurate GET-INTERNAL-REAL-TIME.
2958 ** better RUN-PROGRAM behaviour in case of errors in the child
2960 ** PROBE-FILE now simplifies pathnames correctly.
2961 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2962 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2963 1st 1970 (although time timezone data will be unreliable).
2964 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2966 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2967 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2968 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2970 * bug fix: two potential GC deadlocks affecting threaded builds.
2971 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2972 returns T (reported by Anton Kazennikov)
2973 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2974 with non-variable places
2975 * bug fix: remove a race condition in the setting of
2976 funcallable-instance functions, this should make threaded CLOS
2977 code more stable against memory faults.
2978 * bug fix: corruption of specials when unbinding is interrupted by an
2979 asynchronous unwind (reported by Hannu Koivisto)
2980 * improvement: the debugger will now also display local variables that
2981 are only used once, for code compiled with a DEBUG optimization quality
2984 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2985 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2986 * incompatible change: External-format support for FFI calls. The
2987 SB-ALIEN:C-STRING no longer implies an ASCII
2988 external-format. Instead the string is subject to external-format
2989 conversion. Additionally return values of type SB-ALIEN:C-STRING
2990 are by default of type (SIMPLE-ARRAY CHARACTER), not
2991 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2992 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2993 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2994 * incompatible change: SB-EXT package no longer contains the
2995 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2996 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2998 * incompatible change: the single-stepper is no longer available
2999 on Alpha, Mips and Sparc platforms.
3000 * minor incompatible change: the direct superclasses of
3001 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3002 not (STANDARD-OBJECT FUNCTION). This makes the
3003 class-precedence-lists of GENERIC-FUNCTION and
3004 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3006 * minor incompatible change: the default stream external format on
3007 non-unicode SBCL is no longer detected from the locale, but is always
3009 * new feature: Add a version of evaluator that uses an interpreter instead
3010 of the compiler. EVAL still uses the compiler by default, to switch it
3011 to use the interpreter, set the value of the variable
3012 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3013 * minor incompatible change: the single-stepper REPL has been merged
3014 with the normal debugger (see the "Stepping" heading of the debugger help
3015 for more details). The debugger command STEP will no longer switch
3016 to the single-stepper REPL.
3017 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3018 for a type now works.
3019 * bug fix: loading of default sysinit file works. (thanks to Leonid
3021 * bug fix: better detection of circularities in the file-compiler.
3022 (reported by Marco Monteiro)
3023 * bug fix: the CL pathname functions now work with files that have
3024 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3025 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3026 systems with Unix98 pty semantics.
3027 * bug fix: ASDF-INSTALL will now work with bsd tar.
3028 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3030 * bug fix: timers expiring in dead threads no longer cause a
3031 type-error (reported by Paul "Nonny Mouse").
3032 * bug fix: thanks to more lightweight single-stepper instrumentation,
3033 code compiled with (DEBUG 3) will compile and execute significantly faster,
3034 and will have more accurate type-inferencing than before
3035 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3036 whose bindings are modified
3037 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3038 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3039 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3040 CL:SOFTWARE-VERSION with proper version
3042 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3043 * feature: implemented the READER-METHOD-CLASS and
3044 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3045 as specified by AMOP.
3046 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3048 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3049 (thanks to Lutz Euler)
3050 * optimization: hashing of general arrays and vectors has been
3051 improved. (reported by Any Fingerhut)
3052 * enhancement: SB-INTROSPECT is now able to find definitions of
3053 profiled functions. (thanks to Troels Henriksen)
3054 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3055 as well, allowing compiler-macros for SETF-functions to expand.
3056 * enhancement: step-instrumentation no longer wraps known
3057 single-value functions with multiple-value context, allowing
3058 better type inference.
3059 * fixed bug #337: use of MAKE-METHOD in method combination now works
3060 even in the presence of user-defined method classes. (reported by
3061 Bruno Haible and Pascal Costanza)
3062 * fixed bug #339(c): if there are applicable methods not part of any
3063 long-form method-combination group, call INVALID-METHOD-ERROR.
3064 (reported by Bruno Haible)
3065 * fixed bug #361: the :FUNCTION initarg in the protocol for
3066 initialization of methods can now be used to override
3067 internally-produced optimized functions. (reported by Bruno
3069 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3070 system-provided lambda expression no longer cause warnings about
3071 unbound #:|pv-table| symbols.
3072 * bug fix: improved the handling of type declarations and the
3073 detection of violations for keyword arguments with non-constant
3075 * bug fix: potentially erronous calls to PATHNAME and
3076 MERGE-PATHNAMES were being flushed in some cases.
3077 (reported by Richard Kreuter)
3078 * bug fix: compiled calls to TYPEP were mishandling obsolete
3079 instances. (reported by James Bielman and Attila Lendvai)
3080 * bug fix: format strings with ~> without matching ~< no longer
3081 trigger an AVER, but signal an understandable error instead.
3082 (reported by Antonio Martinez)
3083 * bug fix: specifying an output-file without a pathname-type for
3084 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3085 of input-file instead of "fasl". (reported by Robert Dodier)
3086 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3087 (reported by James Y Knight).
3088 * bug fix: compiler-macros-function did not consider the environment
3089 argument for shadowing by local functions.
3090 * bug fix: compiler-macros expansion was inhibited by local INLINE
3092 * bug fix: inline expansions of known functions were subject to
3093 step-instrumentation in high debug policies, leading to problems
3094 with type-inference.
3095 * bug fix: compiler failed to differentiate between different CONS
3096 types in some cases.
3097 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3098 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3099 * bug fix: #368: incorrect use of expressed vs. upgraded array
3101 * bug fix: #306a: more precise unions of array types.
3102 * thread-safety improvements:
3103 ** CONDITION-WAIT could return early on Linux, if the thread was
3104 interrupted and subsequently continued with SIGCONT.
3105 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3107 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3108 * added support for the ucs-2 external format. (contributed by Ivan
3110 * minor incompatible change: pretty printing of objects of type
3111 (cons symbol) is, in the default pprint-dispatch-table, now
3112 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3114 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3115 called later in a class's lifetime, possibly as late as when the
3116 first instance of the class is created. Previously,
3117 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3118 class became finalizeable.
3119 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3120 for multibyte external-format streams. (thanks to "vbzoli")
3121 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3122 with :ALLOCATION :CLASS inherited from superclasses of the
3124 * fixed bug: anonymous classes can now be created using the :NAME
3125 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3126 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3127 * fixed bug: core-files saved with :EXECUTABLE T can again be
3128 executed when SBCL_HOME isn't set. (reported by James Knight)
3129 * fixed bug: toplevel LOCALLY forms with declarations could
3130 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3131 * fixed bug: printing from several different threads using different
3132 values of *print-case* could cause invalid output, due to
3133 some internal special variables of the printer not being bound
3134 thread-locally (reported by Max Mikhanosha)
3135 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3136 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3137 (reported by Pascal Costanza)
3138 * fixed bug: FINALIZE-INHERITANCE is called from
3139 REINITIALIZE-INSTANCE on classes when the class has previously
3140 been finalized, as required by AMOP.
3141 * minor code generation optimizations:
3142 ** better register allocation in CLOS dispatching functions
3143 ** overflow detection when coercing signed bytes to fixnums on x86-64
3144 ** is now implemented with one IMUL instruction instead of three shifts
3145 ** more efficient bit-vector access on x86 and x86-64
3146 ** more efficient access to raw structure slots on x86 and x86-64
3147 * fixed some bugs revealed by Paul Dietz' test suite:
3148 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3149 return its argument.
3151 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3152 * feature: thread support on Solaris/x86, and experimental thread support
3154 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3156 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3157 default method for SLOT-UNBOUND.
3158 * minor incompatible change: prevent the user from specializing the
3159 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3160 somewhat counter to the intent of the protocol, I (CSR) think, and
3161 additionally it just doesn't work in SBCL as currently
3162 implemented, thanks to optimizations (that are always valid for
3163 the other three SLOT-VALUEish functions, but not for the setter).
3164 * minor incompatible change: the :SB-LDB feature is now enabled by
3165 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3166 the low-level debugger.
3167 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3168 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3169 down to an SB-SYS:FD-STREAM, allowing direct communication in
3170 more cases. Temporary files and pipes are still used as a fallback
3172 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3173 on the non-reentrant C functions localtime(3) and gmtime(3).
3174 * bug fix: global optimization policy was not visible in LOCALLY and
3176 * bug fix: class objects can be used as specializers in methods.
3177 (reported by Pascal Costanza)
3178 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3179 with a type error. (reported by blitz_ on #lisp)
3180 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3181 failed with a type error. (reported by Pascal Bourguignon)
3182 * bug fix: merging pathnames against defaults with :DIRECTORY
3183 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3184 (reported by James Y Knight)
3185 * bug fix: saving large (>2GB) cores on x86-64 now works
3186 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3187 constant index and a (simple-array (signed-byte 32)) array
3188 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3189 error (patch by Robert J. Macomber)
3190 * feature: TIME now displays the amount of run-time spent in GC
3191 * bug fix: The debugger now does a better job of respecting
3192 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3193 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3194 workaround for bug 403.)
3195 * bug fix: floating point exception handling now works on FreeBSD
3196 (thanks to NIIMI Satoshi)
3197 * fixed some bugs revealed by Paul Dietz' test suite:
3198 ** MISC.641: LET-conversion were not supposed to work in late
3200 * improvements to the Win32/x86 port:
3201 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3202 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3204 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3205 * new feature: source path information is generated for macro-expansion
3206 errors for use in IDE's like Slime (thanks to Helmut Eller)
3207 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3208 * bug fix: compiler does not loop forever on an invalid type in
3210 * improvement: compilation of most CLOS applications is significantly
3212 * optimization: added a limited bytecode compiler for simple toplevel
3213 forms, speeding up compilation and FASL loading
3214 * bug fix: the statistical profiler now properly distinguishes anonymous
3217 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3218 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3219 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3220 into subclasses of the finalized class. Now user calls to
3221 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3222 system return before any subclasses are finalized.
3223 * minor incompatible change: The reader no longer ignores errors
3224 regarding non-existent packages in #+ and #- feature tests.
3225 * new feature: command line options --no-sysinit, --no-userinit to
3226 inhibit loading the corresponding init files
3227 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3228 for sending data through UDP sockets (thanks to François-René Rideau)
3229 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3230 error is signalled instead (thanks to François-René Rideau)
3231 * minor incompatible change: Error signalling behaviour of lexical
3232 operations violating package locks has changed slightly. Refer to
3233 documentation on package locks for details.
3234 * enhancement: EVAL can process IF-expressions without resorting to the
3236 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3237 constant-folded properly due to missing out-of-line functions.
3238 (reported by Mika Pihlajamäki)
3239 * bug fix: LISTEN sometimes returned T even in cases where no data was
3240 immediately available from the stream
3241 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3242 were reversed. (reported by Levente Mészáros)
3243 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3244 when given a vector displaced to an adjustable array. (reported
3246 * bug fix: derivation of float boundaries from numbers outside the
3247 appropriate float range (reported by John Wiseman)
3248 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3250 * bug fix: precomputing cache entries for generic functions with
3251 some subclasses of specializers as yet invalid does not attempt to
3252 fill a cache line with a negative offset. (reported by Levente
3254 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3255 allow condition class objects as arguments to DOCUMENTATION and
3256 (SETF DOCUMENTATION); only find and set documentation for
3257 structure names for the STRUCTURE doc-type. (suggested by Gary
3259 * improvements to the Win32/x86 port:
3260 ** (user-homedir-pathname) and default initialization file
3261 locations now know about the user's "Documents and Settings"
3262 directory (thanks to Yaroslav Kavenchuk)
3263 ** run-program is implemented (thanks to Mike Thomas)
3264 ** sockets support (thanks to Timothy Ritchey)
3265 ** better backtrace support (thanks to Alastair Bridgewater)
3266 ** sb-grovel supported
3267 ** asdf-install and sb-posix work somewhat
3268 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3269 * improvements to the Solaris/x86 port:
3270 ** works on Solaris 11/Solaris Express
3271 ** floating-point exception handling support
3272 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3273 * fixed some bugs revealed by Paul Dietz' test suite:
3274 ** REMOVE-METHOD returns its generic function argument even when
3275 the method is not one of the generic functions' methods.
3276 ** objects declared as MEMBER types can be admissible arguments to
3277 structure accessors.
3278 ** printing characters should simply be printed by the FORMAT ~:C
3280 ** compiler failure when compiling functions with hairy constant
3281 defaults for optional parameters.
3282 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3283 function, which is already optimized.
3285 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3286 * new platform: experimental support for SBCL x86/Darwin, including
3287 MacOS X 10.4.5 on Intel.
3288 * new feature: Unicode character names are now known to the system
3289 (through CHAR-NAME and NAME-CHAR).
3290 * new feature: the filesystem location of SBCL's core file is
3291 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3292 * minor incompatible change: the contrib modules SB-POSIX and
3293 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3294 this change is to make it easier to distribute
3295 location-independent binaries.
3296 * bug fix: as implied by AMOP, standardized classes no longer have
3297 slots named by external symbols of public packages. (reported by
3299 * optimization: calling functions via constant symbols -- as in
3300 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3301 via the function object as in (FUNCALL #'FOO).
3302 * optimization: on x86 and x86-64, the calling convention for the
3303 case of dealing with an unknown number of values has been altered
3304 to be friendlier to the prediction heuristics implemented,
3305 particularly with reference to CALL and RET pairing. (thanks to
3306 Alastair Bridgewater)
3307 * optimization: on x86, the code for access to thread-local symbol
3308 values and binding/unbinding of thread-local symbols is smaller.
3309 (thanks to Alastair Bridgewater)
3310 * enhancement: CONSTANTP is now able to determine constantness of
3311 more complex forms, including calls to constant-foldable standardized
3312 functions and some special forms beyond QUOTE.
3313 * fixed bug: occasional GC crashes on Solaris/x86
3314 * optimization: x86-64 supports stack allocation of results of simple
3315 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3316 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3317 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3318 (thanks to James Knight)
3319 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3320 by the standard (thanks to Stephen Compall)
3322 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3323 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3324 be used for bundling the runtime and the core file into one
3325 executable binary. This feature is not currently supported on all SBCL
3326 platforms. (thanks to James Bielman and NIIMI Satoshi)
3327 * new feature: a generational or ephemeral garbage collector is now
3328 the default on the PowerPC platform (both Linux and Darwin). The
3329 old Cheney (stop and copy) collector is a build-time option.
3330 (thanks to Cyrus Harmon, after Raymond Toy)
3331 * minor incompatible change: the method by which SBCL finds its
3332 contributed modules has changed; it no longer relies on symbolic
3333 links from an $SBCL_HOME/systems directory, but searches directly
3334 in the subdirectories of $SBCL_HOME.
3335 * enhancement: the dynamic heap size on the Linux/PPC platform is
3336 markedly larger, even using the older Cheney garbage collector.
3337 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3338 certain complicated string types. (reported by Gary King)
3339 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3340 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3341 * fixed bug: DOCUMENTATION on structures no longer signals an
3342 error if no structure type of the right name exists. (reported by
3344 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3345 applicable non-standard primary or :AROUND method on
3346 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3347 no longer cause unbound variable errors. (reported by Kevin Reid)
3348 * fixed bug: metacircle resolution in cases where methods have slots
3349 added before the slots from STANDARD-METHOD. (reported by Jean
3351 * fixed bug: the Power PC assembly code for calling into lisp
3352 sometimes computed its return address wrongly (depending on the
3353 15th bit of the address, fixed at link time). This used to
3354 manifest itself in a segmentation violation while building PCL.
3355 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3356 many others over the years)
3357 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3358 the stack pointer (treated as a signed integer) is negative.
3359 (thanks to Peter van Eynde)
3361 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3362 * new platform: experimental support for the Windows operating
3363 system has been added. (thanks to Alastair Bridgewater)
3364 * fixed several bugs in and robustified the PPC FFI (including
3365 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3366 * bug fix: allow non-simple string symbol names (reported by Paul
3368 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3370 * bug fix: saving a core corrupted callbacks on x86/x86-64
3371 * bug fix: closed a loophole in metacircularity detection and
3372 grounding in the PCL implementation of CLOS.
3373 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3374 (reported by tomppa on #lisp)
3375 * bug fix: clear the direction flag on Lisp -> C transitions, as
3376 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3377 (reported by Andrej Grozin and Hendrik Maryns)
3378 * optimization: major improvements to GC efficiency on GENCGC platforms
3379 * optimization: faster implementation of EQUAL
3380 * optimization: emit more efficient opcodes for some common
3381 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3382 * optimization: several other minor code-generation improvements on x86-64
3383 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3385 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3386 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3387 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3388 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3389 by ANSI as a generic function, and for consistency (SETF
3390 GENERIC-FUNCTION-NAME) is treated likewise.
3391 * fixed bug #233.b: make constraint propagation notice when a variable
3392 value is changed after it is referenced but before it is used
3393 * fixed bug #296: no more arbitrary behaviour from filenames with
3394 odd characters as --load arguments. (reported by Adam Warner)
3395 * fixed bug #390: :CHARACTER-SET pathname components now work as
3396 expected. (reported by Tim Daly Jr)
3397 * fixed bug #391: complicated :TYPE intersections in slot
3398 definitions no longer cause an error in PCL internals.
3399 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3400 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3401 returning the number of octets which would be written to the
3402 file-stream. (thanks to Robert J. Macomber)
3403 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3404 arguments to the internal stream functions. (thanks to David
3406 * bug fix: stack exhaustion is now handled on the x86/SunOS
3407 platform. (thanks to Daisuke Homma)
3408 * bug fix: more accurate ROOM results on GENCGC platforms
3409 * optimization: improved type inference for arithmetic-for
3410 index variables in LOOP
3411 * optimization: faster floating-point SQRT on x86-64
3412 * fixed some bugs revealed by Paul Dietz' test suite:
3413 ** DOCUMENTATION returns NIL instead of "" for method combinations
3414 that don't have a docstring
3416 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3417 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3418 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3419 therefore are not customizeable by user code (as seems to be at
3420 least permitted and maybe required by AMOP). As a consolation,
3421 however, the SBCL implementation of these functions now calls
3422 REINITIALIZE-INSTANCE as specified by AMOP.
3423 * bug fix: slot-definition documentation is propagated as per ANSI
3424 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3425 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3426 argument, as do eslotd initialization methods. (from Pascal
3427 Costanza's "Closer" project)
3428 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3429 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3431 * bug fix: it is now possible to have more than one subclass of
3432 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3433 (reported by Bruno Haible, Pascal Costanza and others)
3434 * bug fix: the dependent update protocol now works for generic
3435 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3436 and Pascal Costanza)
3437 * bug fix: condition-class instances corresponding to
3438 DEFINE-CONDITION forms are now created eagerly. (reported by
3439 Kalle Olavi Niemitalo on comp.lang.lisp)
3440 * bug fix: floating point printing is more accurate in some
3441 circumstances. (thanks to Simon Alexander)
3442 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3443 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3444 * bug fix: callbacks on OS X now preserve stack-alignment.
3445 (thanks to Cyrus Harmon)
3446 * enhancement: the x86-64 disassembler is much better at
3447 disassembling SSE instructions. (thanks to Lutz Euler)
3448 * enhancement: CHECK-TYPE on a variable now allows type-inference
3449 (thanks to Vincent Arkesteijn)
3450 * optimization: improved performance of EUC-JP external format.
3451 (thanks to NIIMI Satoshi)
3452 * optimization: performance improvements to IO on file streams of
3453 :ELEMENT-TYPE CHARACTER
3454 * optimization: much faster memory allocation on x86-64
3455 * optimization: faster garbage collections (latency and throughput)
3457 * optimization: faster bignum subtraction and division on x86 and x86-64
3458 (thanks to Lutz Euler)
3459 * optimization: more accurate type-inference for loops that use a
3460 floating point index variable or a negative step.
3462 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3463 * bug fix: add a workaround to SBCL looping infinitely at startup on
3464 Linux kernels with apparently buggy implementations of personality().
3465 (thanks to Svein Ove Aas)
3466 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3467 (thanks to David Lichteblau)
3468 * bug fix: local bindings shadow global symbol macros for
3469 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3470 * optimization: non-open coded uses of numeric comparison operators
3471 (e.g. >) no longer cons when called with more than one parameter
3472 on platforms supporting dynamic-extent allocation.
3473 * enhancement: saving cores with foreign code loaded is now supported
3474 on MIPS/Linux in addition to the previously supported platforms.
3475 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3476 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3477 * bug fix: division by zero in sb-sprof when no samples were collected
3478 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3479 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3480 (thanks to Alexander Kjeldaas)
3481 * new feature: ignoring the return values of destructive functions
3482 like NREVERSE signals a compile-time style-warning.
3483 (thanks to Kevin Reid)
3484 * new feature: the alignment of alien structure fields can be
3485 explicitly specified. (thanks to Cyrus Harmon)
3486 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3487 and dump core on SIGQUIT
3489 ** incompatible change: threads do not inherit values of specials
3490 from their parents (see manual)
3491 ** bug fix: threads stacks belonging to dead threads are freed by the
3492 next exiting thread, no need to gc to collect thread stacks anymore
3493 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3494 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3495 ** bug fix: dynamic variable and thread start related gc lossage
3496 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3498 * fixed some bugs revealed by Paul Dietz' test suite:
3499 ** SUBTYPEP is slightly more accurate on heinously complicated
3500 CONS types where some of the members have uncertain (in the
3501 NIL, NIL sense) type relationships to each other.
3503 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3504 no longer purified unless :PURIFY T is explicitly specified.
3505 ** Non-purified cores are significantly smaller than before
3507 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3508 * new feature: timers based on Zach Beane's excellent timer package
3509 * added support for the following external formats: koi8-u,
3510 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3511 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3512 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3513 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3514 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3515 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3516 * incompatible change: a threaded SBCL will no longer revert to
3517 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3518 * bug fix: interrupts are disabled until startup is complete; no
3519 more sigsegvs when receiving a signal to soon
3520 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3522 * bug fix: add a workaround for the memory randomization features in
3523 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3524 workaround will only be in effect on systems with the proc filesystem
3526 * bug fix: printing objects of type HASH-TABLE signals a
3527 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3529 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3530 have been running for over 50 days. (reported by Gilbert Baumann)
3531 * bug fix: the logic for getting names of functions gets less
3532 confused when confronded with alternate-metaclass
3533 funcallable-instances. (reported by Cyrus Harmon)
3534 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3535 consistent, even on internal alternate-metaclass objects.
3536 * bug fix: flush closure information collected by physical
3537 environment analysis prepass before the main pass. (bug reported
3539 * bug fix: compiler pack phase does not modify a hashtable, which is
3540 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3541 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3542 may be expanded. (reported by Alexander <malishev> on c.l.l)
3543 * bug fix: no more style-warnings when compiling code using LAST
3544 under high-SPEED low-SPACE settings. (reported by David Wallin
3546 * fixed some incompatibilities between SBCL's MOP and the MOP
3548 ** the METAOBJECT class is now implemented;
3549 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3550 STANDARD-OBJECT, as required;
3551 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3552 now compatible (as required by VALIDATE-SUPERCLASS); there
3553 remains a consistency requirement over the presence or absence
3554 of the FUNCTION class in the superclass list of finalized
3555 classes; see the manual for more details;
3556 ** the :AROUND method for COMPUTE-SLOTS on
3557 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3558 requested slot ordering.
3560 ** bug fix: parent thread now can be gc'ed even with a live
3562 ** bug fix: binding a special with PROGV to no value is not
3563 the same as that symbol not having been bound (thanks to
3565 ** bug fix: binding specials is thread safe (thanks to
3567 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3568 and SB-SPROF do not die with 'no handler for signal XX in
3569 interrupt_handle_now(..)' anymore
3570 ** bug fix: WITH-TIMEOUT works with multiple running threads
3571 * fixed some bugs revealed by Paul Dietz' test suite:
3572 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3573 the :method-class keyword argument.
3575 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3576 * new port: the Solaris operating system on x86 processors is now
3577 mostly supported, though some rough edges in the environment
3578 remain. (thanks to Daisuke Homma)
3579 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3580 space for its heap. (thanks to Thiemo Seufer)
3581 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3582 closures. (thanks to Thiemo Seufer)
3583 * minor incompatible change: eof selects abort in the debugger.
3584 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3585 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3587 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3588 deprecated, and will go away in a future revision of SBCL.
3589 * minor incompatible change: GC-ON and GC-OFF are no longer
3590 implemented with a counter, it does not matter how many times gc
3591 is switched on or off
3592 * bug fix: discriminating functions for generic function classes
3593 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3594 make invalid assumptions about method precedence order. (reported
3596 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3597 platforms. (thanks to Thiemo Seufer)
3598 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3599 * bug fix: correct pathname printing with printer escaping is on.
3600 (thanks to Kevin Reid)
3601 * bug fix: complex VOP definitions in "user-space" no longer trigger
3602 package locks. (reported by Zach Beane)
3603 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3604 for funcallable-instance functions, and is no different from
3606 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3607 characters in the current readtable. (reported by Nicholas Neuss)
3608 * bug fix: SUBTYPEP on various CONS types returns more a more
3609 accurate acknowledgment of its certainty.
3610 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3611 lists in some cases. This partially fixes bug 384.
3612 * flush all standard streams before prompting in the REPL and the
3614 * bug fix: signal handling and triggering gc do not conflict
3615 directly anymore, in particular a high frequency sb-sprof does
3616 not prevent gc from running
3617 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3618 approximation for timezone and DST information between the
3619 universal time epoch and the smallest negative 32-bit time_t.
3620 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3621 year 1899 so long as the encoded time is non-negative.
3622 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3623 the correct answer for non-constant rotate amounts when performing
3624 an inline 32-bit rotation.
3626 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3627 there is only one thread in the session
3628 ** bug fix: memory leak for streams created in one thread and
3629 written to in another
3630 ** bug fix: lockup when compiled with gcc4
3631 ** bug fix: race that allows the gc to be triggered when gc is
3633 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3634 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3636 ** bug fix: finished threads are gc'ed properly
3637 * fixed some bugs revealed by Paul Dietz' test suite:
3638 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3639 has arguments with a different set of applicable methods from
3640 the orignal arguments.
3641 ** The type error thrown by MAP now has a correct expected-type
3643 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3644 name a compiled function.
3645 ** Three MISC tests where a large bignum was improperly coerced to
3646 a float that couldn't represent that bignum during type
3647 derivation were fixed.
3648 ** SUBTYPEP can now handle types involving the negation of a
3649 list-form FUNCTION type.
3650 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3651 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3652 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3654 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3655 * New feature: Experimental support for bivalent streams: streams
3656 opened with :element-type :default now allow character and binary
3657 (unsigned-byte 8) I/O
3658 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3659 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3661 * bug fix: no more highly sporadic "couldn't check whether ~S is
3662 readable" when reading a stream and an interrupt hits in the middle
3663 of a select system call
3664 * compiler better recognizes complex arrays (reported by Eduardo
3666 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3667 for variables on SBCL built with linkage-tables. (reported by Luis
3669 * various error reporting improvements.
3670 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3671 (Thanks to Thiemo Seufer)
3672 * bug fix: nested reader invokations work correctly
3673 * bug fix: it is possible to have simultaneous references to foreign
3674 code and foreign data with the same name.
3676 ** added x86-64 support
3677 ** incompatible change: the threading api now works with thread
3678 objects instead of thread ids
3679 ** bug fix: threads are protected from signals and interruption when
3680 starting up or going down
3681 ** bug fix: a race where an exiting thread could lose its stack to gc
3682 ** bug fix: don't halt on infinite error in threads if possible
3683 ** fixed numerous gc deadlocks introduced in the pthread merge
3684 ** bug fix: fixed thread safety issues in read and print
3685 ** bug fix: debugger doesn't hang on session lock if interrupted at
3686 an inappropriate moment
3687 ** bug fix: run-program is now thread safe(r)
3688 ** bug fix: inner with-recursive-lock no longer releases the mutex
3689 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3690 * fixed some bugs revealed by Paul Dietz' test suite:
3691 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3692 EXPECTED-TYPE slots filled.
3693 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3695 ** MAKE-CONDITION accepts classes as type-designators.
3696 ** COMPILE may never return NIL.
3697 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3698 range before calling Unix time functions
3700 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3701 * numerous signal handling fixes to increase stability
3702 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3703 * minor incompatible change: we now correctly canonize default
3704 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3705 as per the MOP, rather than the historical (INITARG INITFUNCTION
3706 INITFORM). (reported by Bruno Haible)
3707 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3708 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3709 for more information.
3710 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3711 pathname is a directory pathname.
3712 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3713 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3715 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3716 :METACLASS argument in addition to a class name. (reported by
3717 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3718 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3719 (reported by Bruno Haible; patch from Gerd Moellmann)
3720 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3722 * bug fix: more cleanups to the floating point exception handling on
3723 x86-64 (thanks to James Knight)
3724 * bug fix: the compiler does not try to constant fold calls of
3725 COERCE and BIT-* functions when they return freshly constructed
3726 objects. (reported by Nikodemus Siivola and Paul Dietz)
3727 * optimization: improved the MIPS versions of generic (in the
3728 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3729 * optimization: direct conversion of (unsigned-byte 32) to floats on
3730 the PowerPC platform.
3731 * optimization: structure instances with raw slots now use less
3732 memory, and probably show better memory locality. (thanks to
3734 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3735 are treated as requests for stack allocation on the x86-64,
3736 Alpha-32, PPC and SPARC platforms.
3737 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3738 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3739 (thanks to Tony Martinez)
3741 ** gcing a dead thread can no longer lead to lockups
3742 ** threads block signals until they are set up properly
3743 ** errno is no longer shared by threads
3744 ** interrupt-thread restores the eflags register on x86
3745 ** fixed some lockups due to gc/thread interaction
3746 * fixed some bugs revealed by Paul Dietz' test suite:
3747 ** invalid dotted lists no longer raise a read error when
3748 *READ-SUPPRESS* is T
3749 ** signal an error if a symbol that names a declaration is used
3750 as the name of a type, or vice versa
3751 ** allow using the (declare (typespec var*)) abbreviation for
3752 (declare (type typespec var*)) with all type specifiers
3753 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3754 ** always return NIL from PPRINT-POP when OBJECT is NIL
3755 ** don't signal errors when pretty-printing malformed LABELS,
3756 FLET or MACROLET forms
3757 ** declarations in a DOLIST body are also in scope for the
3759 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3761 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3764 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3765 * fixed cross-compiler leakages that prevented building a 32-bit
3766 target with a 64-bit host compiler.
3767 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3768 opened with :IF-EXISTS :OVERWRITE.
3769 * fixed bug 281: error for an invalid qualifier in a short-form method
3770 combination method is not signalled until the faulty method is called.
3771 * bug fix: iteration variable type inferrer failed to deal with open
3772 intervals. (reported by Alan Shields)
3773 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3774 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3775 or more runtime options were provided to the sbcl binary.
3776 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3777 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3778 * optimization: there's now a fast-path for fixnum arguments in the
3779 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3780 * optimization: the code generated on x86-64 is more compact thanks
3781 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3782 * bug fix: floating-point exception handling now partly works on
3783 x86-64. (Thanks to James Knight)
3784 * improvement to the MIPS backend from Thiemo Seufer: C-style
3785 64-bit long long arguments and return values to alien functions
3787 * fixed some bugs revealed by Paul Dietz' test suite:
3788 ** the type-error signalled from WARN has a filled-in DATUM slot.
3789 ** the type-error required when a stream is not associated with
3790 a file has the stream as its datum.
3791 ** type-errors on single-floats on x86-64 no longer have
3792 :INVALID-OBJECT as the datum
3793 ** the type-errors signalled for invalid function names now have
3794 a correct expected type
3795 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3796 for structures defined with a :TYPE. Documentation strings for
3797 typed structures are no longer immediately discarded
3798 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3799 broadcast streams and synonym streams. FILE-LENGTH now also works
3800 on broadcast streams.
3802 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3803 * incompatible change: the --noprogrammer option, deprecated since
3804 version 0.7.5, has been removed. Please use the equivalent
3805 --disable-debugger option instead.
3806 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3808 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3809 inoperational for a while now) has been completely removed.
3810 * null lexical environments are now printed as #<NULL-LEXENV>,
3811 significantly reducing the amount of clutter in typical backtraces.
3812 * documentation on weak pointers, finalization, and after GC hooks
3813 has been added to the manual.
3814 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3815 as other specialized array types, is much faster. SUBSEQ and
3816 COPY-SEQ on such arrays have also been sped up.
3817 * optimization: EQL is now more efficient when at least other argument
3818 is known to be of type (OR FIXNUM (NOT NUMBER)).
3819 * fixed bug: the runtime is now less vulnerable to changes in the
3820 size of the SBCL object on OS X, and virtual memory is reserved for
3821 all spaces that need to be at a fixed address.
3822 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3823 * fixed bug: finalizers and after GC hooks that cause consing are now
3825 * fixed bug: compiler error messages and summaries are now printed to
3826 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3827 * fixed inference of the upper bound of an iteration variable.
3828 (reported by Rajat Datta).
3829 * fixed bug 211e: calling local functions with duplicated constant
3830 keyword argument no longer causes a bogus style warning about an
3832 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3833 ftype declaration to be disregarded. (reported by Dave Roberts)
3834 * fixed bug 373: caused by erronous compilation of references to alien
3835 variables in the runtime on ppc/darwin.
3836 * fixed bug 376: CONJUGATE type deriver.
3837 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3838 (reported by Baughn on #lisp)
3839 * a cross-compiler bug on non-x86 platforms has been identified and
3840 fixed. (thanks to Bruno Haible)
3841 * improvements to the MIPS runtime code for increased stability.
3842 (thanks to Thiemo Seufer)
3843 * increased the maximimum compact environment size to allow
3844 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3845 * partial workaround for bug 135: don't name the function we're
3846 calling for hairy cases of EVAL, so as not to accumulate one environment
3847 entry per call to EVAL. (reported by Kevin Reid)
3848 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3849 * optimization: type testing for non-vector arrays should be faster.
3850 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3852 * bug fix: setting 31st element of a bit vector to zero did not work
3854 * bug fix: redefining a class definition which failed due to a
3855 previous accessor / function clash now works (but see BUGS entry
3856 #380 for more problems in this area). (thanks to Zach Beane)
3857 * the long form of DEFINE-METHOD-COMBINATION disables method group
3858 checking when given a single method group with pattern *. (thanks
3860 * on x86 compiler supports stack allocation of results of simple
3861 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3862 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3863 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3864 * fixed some bugs related to Unicode integration:
3865 ** the restarts for recovering from input and output encoding
3866 errors only appear when there is in fact such an error to
3868 * fixed some bugs revealed by Paul Dietz' test suite:
3869 ** MISC.549 and similar: late transformation of unsafe type
3870 assertions into derived types caused unexpected code
3872 ** SCALE-FLOAT type deriver is less wrong.
3873 ** type derivers for EXP, LOG and similar functions compute result
3874 types for complex arguments better.
3875 ** (MISC.563) CONJUGATE type deriver works for very restricted
3877 ** out-of-line type testers for character strings are available.
3878 ** EQUAL compiler transform understands specialness of objects
3880 ** accessing double-floats stored on the stack now works on x86-64.
3881 ** debugger internals could sometimes create invalid lispobjs,
3882 resulting in GC crashes.
3883 ** MISC.548: type check weakening can convert required type into
3885 ** initialization forms for bindings are not in scope of free special
3888 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3889 * incompatible change: thread support for non-NPTL systems has
3890 been removed - locking is buggy and unreliable. A threaded
3891 SBCL build will now warn at startup and refuse to create
3892 new threads, unless futex support is detected in the kernel
3893 * incompatible change: the top level REPL now has only an ABORT
3894 restart associated with it, not TOPLEVEL and ABORT as it used to.
3895 TOP and TOPLEVEL are now available as debugger commands for
3896 returning to the top level.
3897 * incompatible change: forms evaluated in the REPL now use the
3898 global optimization policy.
3899 * incompatible change: user- and system-initialization files are
3900 no longer processed with LOAD, but by READ and EVAL; hence the
3901 global optimization policy, startup package, readtable, etc,
3903 * The .fasl file format number has been incremented because of
3904 various incompatible changes.
3905 * internal entry point details and argument counts no longer appear
3906 in backtraces unless explicitly requested by setting
3907 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3908 * built-in and standard functions no longer have names like "top
3909 level local call to FOO".
3910 * fixed bug 32: functions defined in non-null lexical environments
3911 now have more legible printed representation
3912 * fixed bug 33: functions defined in non-null lexical environemnts
3913 are now more amenable to inspection by INSPECT.
3914 * workaround for bug 354: XEPs no longer appear in backtraces unless
3915 explicitly requested.
3916 * fixed bug: receiving the signal which results from attempting to
3917 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3918 SIGBUS on other *BSDs) on architectures where the C stack is also
3919 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3920 to debugger confusion or wild instability. (reported by Cheuksan
3922 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3923 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3924 (reported by Lutz Euler)
3925 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3926 compiled code. (reported by Paul Dietz)
3927 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3928 specialized parameter to a method to something that is not TYPEP
3929 the specializer is now possible.
3930 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3931 face of package deletion.
3932 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3933 pathname. (reported by David Tolpin on c.l.l)
3934 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3935 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3936 STRING-STREAM and FILE-STREAM, respectively.
3937 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3938 than previously; in addition, its test suite is now run on build.
3939 (thanks to Luke Gorrie)
3940 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3941 * optimization: added a immediate representation for single-floats
3943 * fixed some bugs revealed by Paul Dietz' test suite:
3944 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3945 ** attempting to create a package with a colliding nickname causes
3946 correctable errors to be signalled.
3947 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3948 ** several x86-64 backend bugs related to sign-extension of immediate
3951 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3952 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3953 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3955 * fixed loading of multiply forward-referenced layouts.
3956 (thanks to Cheuksan Wang)
3957 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3958 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3959 (see COMPILE-FILE documentation for details of :PRINT option)
3960 * fixed bugs 19 and 317: fixed-format floating point printing is
3961 more accurate. This also fixes a bug reported by Adam Warner
3962 related to the ~@F format directive.
3963 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3965 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3966 dispatch table if the from-char is a dispatch macro character.
3967 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3968 by the wordsize no longer ignore the last word. (reported by Lutz
3970 * fixed bug in type checking of dynamic-extent variables. (reported
3972 * optimization: sequence traversal functions use their freedom to
3973 coerce function designators to functions.
3974 * optimization: code with many calls to CLOS methods specialized on
3975 CLOS classes has had redundant type checks removed.
3976 * optimization: added declarations to speed up operations that access
3977 the internal character database (for example STRING-UPCASE)
3978 * optimization: comparison operations between floats and sufficiently small
3979 fixnums no longer create extra rationals
3980 * fixed some bugs related to Unicode integration:
3981 ** portions of multibyte characters at the end of buffers for
3982 character-based file input are correctly transferred to the
3983 start of the buffer at the next read.
3984 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3985 passing it through to OPEN.
3986 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3987 argument given to internal calls to OPEN.
3988 ** the built-in comment readers (introduced by character sequences
3989 ";" and "#|") are more forgiving to encoding errors; they will
3990 STYLE-WARN and then attempt to resync the stream at a character
3991 boundary. (thanks to Teemu Kalvas)
3992 * fixed some bugs in the x86-64 port:
3993 ** Negative short int return values from c-calls are sign-extended
3995 ** The stack is aligned to 16-bytes for c-calls, as required by
3996 the ABI. (thanks to Cheuksan Wang)
3997 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3998 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3999 for enums. (thanks to Vincent Arkesteijn)
4000 ** Multiple small optimizations and bugfixes for floating point
4002 * fixed some bugs revealed by Paul Dietz' test suite:
4003 ** Space, Tab, Linefeed, Return and Page have the invalid
4004 secondary constituent character trait.
4005 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4007 ** WITH-INPUT-FROM-STRING should only update the index place on
4009 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4010 works more reliably.
4011 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4012 with one-dimensional arrays with fill pointers.
4013 ** TYPE-OF failed on a complex with an integer realpart and a
4015 ** compiler failure during type inference for the code of form
4016 (IF (EQL X (THE ...)) ...) (MISC.535).
4018 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4019 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4020 platform. The port supports 61-bit fixnums, large memory spaces
4021 and reloading shared object files.
4022 * enhancement: saving cores with foreign code loaded is now
4023 supported on ppc/Darwin in addition to the previously supported
4025 * enhancement: the statistical profiler now walks deeper into the
4026 call stack for more meaningful call-graphs and accrued time
4027 reports (x86/x86-64 only). It also now reports time spent in
4029 * enhancement: it is now possible to trace most individual methods
4030 of a generic function in addition to tracing the generic function
4032 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4034 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4035 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4036 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4037 produces an error. (thanks to Vincent Arkesteijn)
4038 * bug fix: NAMESTRING on pathnames with :WILD components in their
4039 directories works correctly. (thanks to Artem V. Andreev)
4040 * fixed bug 125: compiler preserves identity of closures. (reported
4042 * bug fixed: functions with &REST arguments sometimes failed with
4043 "Undefined function" when compiled with (DEBUG 3). (reported by
4045 * bug fix: overflow during compiling of setting element of a bit
4046 vector with constant index and value. (reported by Timmy Douglas)
4047 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4048 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4049 * on x86 compiler partially supports stack allocation of dynamic-extent
4051 * GO and RETURN-FROM do not check the extent of their exit points
4052 when compiled with SAFETY 0.
4053 * fixed some bugs related to Unicode integration:
4054 ** encoding and decoding errors are now much more robustly
4055 handled; it should now be possible to recover even from invalid
4056 input or output to the terminal. (thanks to Teemu Kalvas)
4057 ** provided a first cut at implementing STRING-TO-OCTETS and
4058 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4059 ** altered the SB-MD5 contributed module slightly, changing the
4060 interface just enough for it to be supportable for builds where
4061 lisp characters are not eight bits.
4062 * fixed some bugs revealed by Paul Dietz' test suite:
4063 ** the FORMATTER-generated functions for ~V[ conditionals require
4064 the correct number of arguments.
4065 ** READ-FROM-STRING returns the mandated second value when applied
4066 to displaced strings.
4067 ** the #\Rubout and #\Backspace characters are treated as invalid
4068 constituent characters by the tokenizer.
4070 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4071 * new feature: reloading changed shared object files with
4072 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4073 * new feature: references to foreign variables and functions
4074 can now be compiled and loaded before the corresponding shared
4075 object file is loaded, as long as the foreign definitions are
4076 available at runtime.
4077 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4078 supported. (thanks to Dan Debertin)
4079 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4080 just keywords. (thanks to Vincent Arkesteijn)
4081 * fixed bug #331: structure-class instances corresponding to
4082 DEFSTRUCT forms are now created eagerly.
4083 * fixed bug #345: backtraces from calls to undefined functions work
4084 on x86 as well. Related bug #61 is now also partially fixed on x86
4085 (backtraces from throws to unknown catch tags.)
4086 * bug fix: lambda-list parsing is now stricter vrt. order and number
4087 of lambda-list keywords.
4088 * bug fix: as specified by AMOP, an error is signalled if a
4089 class-option appears multiple times in a DEFCLASS form. (reported
4091 * bug fix: RANDOM can be compiled when the compiler derives the type
4092 of its numeric argument as a disjoint set of small integers.
4093 (reported by Paul Dietz)
4094 * bug fix: starting a core saved with shared objects loaded when
4095 those objects are not available no longer causes threaded SBCL to
4096 hang. (reported by Sean Ross)
4097 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4099 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4100 argument, which must always be NIL. (reported by Kalle Niemitalo)
4101 * bug fix: printing 1.0d+23 no longer results in an error.
4102 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4103 * bug fix: structure slot setters preserve evaluation order. (thanks
4105 * fixed some bugs related to Unicode integration:
4106 ** RUN-PROGRAM can allow its child to take input from a Lisp
4107 stream. (reported by Stefan Scholl)
4108 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4109 locales. (reported by Ken Causey)
4110 * fixed some bugs revealed by Paul Dietz' test suite:
4111 ** INCF, DECF and REMF evaluate their place form as specified in
4113 ** FORMATTER expands ~{ ~} iteration directives with V or #
4114 parameters correctly.
4115 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4116 consequent uses no arguments correctly.
4117 ** the system has a partial understanding of the (COMPLEX RATIO)
4119 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4122 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4123 * new feature: a build-time option (controlled by the :SB-UNICODE
4124 keyword feature, enabled by default) for building the system with
4125 support for the entire 21-bit character space defined by the
4127 * new feature: the system now has rudimentary external-format
4128 support; the primary user-visible change at this time is that
4129 characters with the high bit set (such as lower-case-e-acute) will
4130 print correctly to a terminal in a UTF-8 environment.
4131 * minor incompatible change: BASE-CHAR no longer names a class;
4132 however, CHARACTER continues to do so, as required by ANSI.
4133 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4134 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4135 has been moved to the SB-EXT package (temporarily re-exported from
4137 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4138 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4140 * fixed bug #351: better error-handlind and reporting for malformed
4142 * fixed bug #350: bignum-printing is now more memory-efficient,
4143 allowing printing of very large bignums, eg. (expt 2 10000000).
4144 (reported by Bruno Haible)
4145 * fixed bug #302: better primitive-type selection for intersection
4147 * fixed bug #308: non-graphic characters now all have names, as
4148 required. (reported by Bruno Haible)
4149 * bug fix: redefining a class with different superclasses now correctly
4150 removes it from the direct-subclasses of its previous superclasses.
4151 (reported by David Morse)
4152 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4153 new value now works. (reported by Bruno Haible)
4154 * bug fix: correct canonicalization of multiple non-standard slot
4155 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4156 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4157 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4158 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4159 now exists, an signals an error.
4160 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4161 during macroexpansion for non-iteration variables as well. (reported
4162 by Bruno Haible for CMUCL)
4163 * bug fix: Cyclic structures and unprintable objects in compiler
4164 messages no longer cause errors. (reported by Bruno Haible)
4165 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4166 and READ-FROM-STRING all now return a primary value of NIL if
4167 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4168 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4169 (reported by Bruno Haible for CMUCL)
4170 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4171 do not designate a condition. (reported by Bruno Haible for
4173 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4174 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4175 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4176 permitting resolution in favour of any of the conflicting symbols.
4177 (reported by Bruno Haible for CMUCL)
4178 * bug fix: EQUAL compiler optimizations is less aggressive on
4179 strings which can potentially compare true despite having distinct
4180 specialized array element types.
4181 * bug fix: unit enumerations can be defined without dividing by
4182 zero. (thanks to Vincent Arkesteijn)
4183 * FORMAT compile-time argument count checking has been enhanced.
4184 (report from Bruno Haible for CMUCL)
4185 * a partial workaround for the bug 262: the compiler does not try to
4186 inline-expand a local function doing RETURN-FROM from a deleted
4187 BLOCK. (thanks to Peter Denno for the bug report and to David
4188 Wragg for the simple test case)
4189 * fixed some bugs revealed by Paul Dietz' test suite:
4190 ** RENAME-PACKAGE allows all package designators as new package
4192 ** constraint propagation and lambda variable substitution are
4193 more cautious in dealing with partially deleted code.
4194 ** compiler sometimes lost reoptimization passes.
4195 ** CERROR, given a condition as condition designator, passes its
4196 remaining arguments to the continue format control without
4198 ** Case-altering FORMAT directives work correctly on non-ASCII
4200 ** The REAL type specifier handles bounds outside the floating
4201 point ranges without signalling FLOATING-POINT-OVERFLOW.
4202 ** Functions with IR1-transformations can create intercomponent
4203 references to global functions.
4204 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4206 ** FORMAT ~R treats a nil value for its first parameter correctly.
4208 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4209 * enhancement: saving cores with foreign code loaded is now
4210 supported on x86/NetBSD and sparc/Linux in addition to the previously
4211 supported platforms.
4212 * bug fix: on some platforms repeated installations caused multiple
4213 copies of HTML documentation to be installed -- should not happen
4214 any more. (reported by Stefan Scholl)
4215 * bug fix: parsing self-recursive alien record types multiple times
4216 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4217 original patch by Helmut Eller for CMUCL)
4218 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4219 (thanks to Richard Kreuter)
4220 * bug fix: defining classes whose accessors are methods on existing
4221 generic functions in other (locked) packages no longer signals
4222 bogus package lock violations. (reported by François-René Rideau)
4223 * bug fix: special variables as DEFMETHOD parameters no longer have
4224 associated bogus type declarations. (reported by David Wragg and
4226 * bug fix: read-write consistency on streams of element-type
4227 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4228 * bug fix: redefiniton of the only method of a generic function with
4229 no DEFGENERIC no longer emits a full WARNING. In addition,
4230 redefinition of generic functions with no DEFGENERIC to an
4231 incompatible lambda list now signals an error. (thanks to Zach
4233 * bug fix: DEFGENERIC now works even when there's a function of the
4234 same name in an enclosing lexical environment. (thanks to Zach
4236 * fixed compiler failure, caused by instrumenting code during
4237 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4238 * optimization: added loop analysis and improved register allocation
4239 * fixed some bugs revealed by Paul Dietz' test suite:
4240 ** POSITION on displaced vectors with non-zero displacement
4241 returns the right answer.
4242 ** (SIMPLE-STRING) is a valid type specifier for sequence
4244 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4246 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4247 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4249 ** The justification version of the FORMAT ~< directive treats
4250 non-zero minpad parameter correctly.
4252 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4253 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4254 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4255 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4256 the supported interface.
4257 * new feature: Single-stepping of code compiled with DEBUG 2 or
4258 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4259 * new feature: saving cores with foreign code loaded is now
4260 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4261 Timothy Moore's work for CMUCL)
4262 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4263 parameters to * instead of NIL if no initform is supplied.
4264 (reported by Johan Bockgaard)
4265 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4266 correctly when FUNCALL appears as the car of the form. Note:
4267 despite this FUNCALL forms are not currently subject to
4268 compiler-macro expansion. (port of Raymond Toy's fix for the
4269 same from CMUCL, reported by Johan Bockgaard)
4270 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4271 (thanks for Teemu Kalvas)
4272 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4273 case instead of terminating the iteration (thanks for Julian
4274 Squires, Sean Champ and Raymond Toy)
4275 * bug fix: incorrect expansion of defgeneric that caused a style
4276 warning. (thanks for Zach Beane)
4277 * bug fix: slot accessor effective method computation works properly
4278 for classes with multiple non-standard applicable methods on
4279 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4280 * on x86 compiler supports stack allocation of results of LIST and
4281 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4282 CMUCL implementation by Gerd Moellmann)
4283 * fixed some bugs revealed by Paul Dietz' test suite:
4284 ** FORMAT strings with both the ~<~:;~> form of the justification
4285 directive and pretty-printing directives cause an error.
4287 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4288 * incompatible change: the internal functions
4289 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4290 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4291 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4292 instead of the old functions.
4293 * new feature: on platforms where "dladdr" is available foreign
4294 function names now appear in backtraces. (based on Helmut Eller's
4296 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4297 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4299 * documentation: ASDF manual is now distributed with SBCL.
4300 * bug fix: SBCL can now load its contributed modules with REQUIRE
4301 even if the system-provided entries have been removed from
4302 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4304 * bug fix: backtraces involving undefined functions or assembly
4305 routines are more informative. (thanks to Brian Downing)
4306 * bug fix: mutually referent alien structures now work correctly.
4307 (reported by Rick Taube)
4308 * bug fix: structures defined by WITH-ALIEN can be referred to
4309 within other definitions in the same WITH-ALIEN.
4310 * bug fix: division operators (MOD, TRUNCATE and the like) with
4311 constant zero divisors and integer dividends no longer generate
4313 * bug fix: provide default methods for INPUT-STREAM-P and
4314 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4315 * bug fix: improve the detection and resolution of MOP metacycles
4316 (where effective method computation depends on the generic function
4317 having its effective method computed). (reported by Bruno Haible)
4318 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4319 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4320 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4321 * bug fix: pathnames with relative directory components can be
4322 represented relative to default pathnames.
4323 * optimization: in taking the GCD of bignums, reduce the two bignums
4324 to approximately the same size (using Euclid's algorithm) before
4325 applying the more sophisticated binary GCD. (thanks to Juho
4327 * optimization: COUNT on bitvectors now operates word-at-a-time.
4328 * optimization: ASH with a positive, but not necessarily constant,
4329 (leftwards) shift, when in a modular context, is compiled to a
4331 * fixed some bugs revealed by Paul Dietz' test suite:
4332 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4333 if the corresponding argument is NIL.
4334 ** FORMAT directives accepting a minpad parameter treat negative
4336 ** literal commas as character parameters to FORMAT directives are
4338 ** literal spaces directly after ~<Newline> directives within a
4339 format-logical-block (~:< ~@:>) do not induce :FILL-style
4340 conditional newlines.
4341 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4342 as specified: it no longer includes conditional newlines).
4343 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4345 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4346 :PER-LINE-PREFIX argument does not evaluate to a string.
4348 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4349 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4350 the manual for details; for now, package locks can be disabled by
4351 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4352 if no major problems are found then it is likely that they will be
4353 compiled in unconditionally.
4354 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4355 unsupported operators on all platforms. To load a shared library
4356 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4357 object file, link it into a shared library outside of SBCL and
4358 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4360 * bug workaround: ROOM T and the GC were not working together
4361 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4362 reporting facility aren't preserved. That reporting has been
4363 disabled, so now until and unless someone figures out how to make it
4364 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4365 * minor incompatible change: as threatened around sbcl-0.8.0, the
4366 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4367 The symbols are also exported from SB-PCL for backwards
4368 compatibility, but more so than before SB-PCL should be treated as
4369 an implementation-internal package.
4370 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4372 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4373 It is known as of this release not to work on the Alpha, however.
4374 * fixed bug #167: errors signalled due to illegal syntax in method
4375 bodies are now more legible.
4376 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4377 designators and can hence be used with TYPEP.
4378 * fixed bug #333: CHECK-TYPE now ensures that the type error
4379 signalled, if any, has the right object to be accessed by
4380 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4381 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4382 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4384 * fixed bug #334: programmatic addition of slots using specialized
4385 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4386 and :ALLOCATION :CLASS slots.
4387 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4388 float exponents. (rereported by Peter Seibel)
4389 * fixed a bug: #\Space (and other whitespace characters) are no
4390 longer considered to be macro characters in standard syntax by
4391 GET-MACRO-CHARACTER.
4392 * fixed bug: initialization of condition class metaobjects no longer
4393 causes an instance of the condition to be created. (reported by
4395 * fixed bug: it is now possible to have slots such that
4396 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4397 description is neither :INSTANCE nor :CLASS.
4398 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4399 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4400 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4401 non-standard SLOT-DEFINITION-ALLOCATION values.
4402 * fixed bugs: various race conditions handling exiting threads.
4403 CL-PPCRE's thread torture test now passes.
4404 * fixed arguably-a-bug: GC time proportional to number of threads in
4405 system even when most of them are idle
4406 * optimization: improved performance of BIT and SBIT on bit-vectors.
4407 * .fasl file incompatibility: The fasl file version number has
4408 been incremented because of changes associated with package locks.
4410 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4411 * minor incompatible change: the system no longer provides
4412 optimization hints (conditions which are TYPEP
4413 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4414 mode; these hints are still emitted when higher SPEED optimization
4416 * new contrib module: a sampling profiler (profiling by statistical
4417 sampling, rather than by instrumenting functions) is available as
4418 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4419 * the behaviour of the standard function ED is now customizeable by
4420 third parties through a hook variable: see ED's documentation
4421 string for information on the protocol.
4422 * the compiler no longer emits efficiency notes for (FUNCALL X)
4423 when the type of X is uncertain under default optimization
4425 * fixed bug 276: mutating a binding of a specialized parameter to a
4426 method to something that is not TYPEP the specializer is now
4428 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4429 exhibit the required behaviour on the x86 platform. (thanks to
4430 Peter van Eynde, Eric Marsden and Bruno Haible)
4431 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4432 even for difficult arguments. (reported by Peter Graves)
4433 * fixed bug 141a: the backquote printer now descends quoted
4435 * fixed another bug in backquote printing: no more destructive
4436 modification of the form's list structure. (reported by Brian
4438 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4439 move between its address being taken and the call to
4440 interrupt_thread, fixing a crashing race condition.
4441 * the SB-POSIX contrib implementation has been adjusted so that it
4442 no longer exhibits ridiculously poor performance when constructing
4443 instances corresponding to C structs.
4445 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4446 * minor incompatible change: the sb-grovel contrib now treats C
4447 structures as alien (in the sense of SB-ALIEN) objects rather than
4448 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4449 has implications for memory management of client code
4450 (sb-grovel-returned objects must now be manually managed) and for
4451 type safety (alien objects now have full types).
4452 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4453 used to control emission of compiler diagnostics, rather than the
4454 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4455 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4456 quality should be considered deprecated.
4457 * install.sh now installs the user manual as well
4458 * (not quite a new documentable feature, but worth considering in
4459 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4460 beginnings of a semantically meaningful condition hierarchy is
4461 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4463 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4464 designator as the defaults argument.
4465 * fixed bug: Displaced arrays whose displaced-to array has become
4466 too small now cause ARRAY-DIMENSION to signal an error, providing
4467 for safer bounds-checking. (reported by Bruno Haible)
4468 * fixed bug: DEFCLASS slot definitions with identical :READER and
4469 :WRITER names now signal a reasonable error. (reported by Thomas
4471 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4473 * fixed bug: Invalid slot specification errors now print correctly.
4474 (thanks to Zach Beane)
4475 * fixed bug 320: Shared to local slot value transfers in class
4476 redefinitions now happen corrently from superclasses as
4477 well. (reported by Bruno Haible)
4478 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4480 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4481 improper lists correctly. (reported by Bruno Haible)
4482 * fixed bug 313: source-transform for <fun-name> was erroneously
4483 applied to a call of a value of a variable with name <fun-name>.
4484 (reported by Antonio Menezes Leitao)
4485 * fixed bug 307: The obsolete instance protocol ensures that
4486 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4487 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4488 remove dead unknown-values globs from the middle of the stack.
4489 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4490 easier to resume long computations after using *BREAK-ON-SIGNALS*
4491 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4492 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4493 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4494 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4495 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4496 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4498 * fixed a (fairly theoretical) bug in string printing: if
4499 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4500 does not have array-element-type equal to the most general string
4502 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4503 function name. (thanks to Nikodemus Siivola)
4504 * fixed bug: compile-time format string checker failed on
4505 non-closed ~{. (reported by Thomas F Burdick)
4506 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4507 don't warn on legal loop code involving more than one aggregate
4508 boolean. (thanks to Nikodemus Siivola)
4509 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4510 in keyword position to MAKE-PACKAGE was not being reported as
4512 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4513 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4515 * fixed bugs 280 and 312: the checking for multiple definitions in a
4516 file is less likely to become confused by uses of inline
4518 * fixed bug: the #S reader macro performs the keyword coercion
4519 specified for slot names. (reported by Kalle Niemitalo)
4520 * fixed bug: lambda lists may contain symbols whose names start with
4521 & but are not lambda-list-keywords; their occurrence triggers a
4523 * fixed bug 321: define-method-combination argument lambda lists do
4524 not cause invalid code to be generated when &optional or &aux
4525 variables have default values. (reported by Bruno Haible)
4526 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4527 have CLOS classes; this appears also to have fixed reported
4528 instability in stack exhaustion detection.
4529 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4530 MUFFLE-WARNING when no associated restart is present is now
4532 * optimization: rearranged the expansion of various defining macros
4533 so that each expands into only one top-level form in a
4534 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4536 * optimization: used a previously little-used slot in symbols to
4537 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4539 * fixed some bugs revealed by Paul Dietz' test suite:
4540 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4542 ** Fixed an optimization bug related to inheritance of initforms
4543 from local to shared slots.
4544 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4545 ** CAST optimizer forgot to flush argument derived type.
4546 ** print/read consistency on floats is now orders of magnitude
4547 more likely. (thanks also to Bruno Haible for a similar report
4549 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4550 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4551 for objects of type REAL. Make it so.
4552 ** SXHASH is specified (infelicitously) to respect similarity,
4553 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4554 it so. (thanks to Markus Ziegler)
4555 ** on the Alpha, the compiler succeeds in compiling functions
4556 returning a known number of arguments greater than 63.
4557 ** fixed handling of invalid NIL arguments in keyword position
4559 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4561 ** provided a readably-printable representation for RANDOM-STATE
4563 ** ensured that pathnames, where they have a namestring, always
4564 print using #P"..." syntax.
4566 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4567 * Support for the forthcoming 2.0 version of the NetBSD kernel
4568 running on x86 hardware has been added. (thanks to Perry
4569 E. Metzger most immediately, and others for their past work)
4570 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4571 current release version; SBCL's OpenBSD support had been broken
4572 since about the time of OpenBSD's switch to ELF binary format.)
4573 * [placeholder for DX summary]
4574 ** user code with &REST lists declared dynamic-extent, under high
4575 speed or space and low safety and debug optimization policy.
4576 * The manual has been converted to Texinfo format and the debugger
4577 chapter from the cmucl manual has been added.
4578 * A facility has been added to extract documentation strings from
4579 sbcl and store them as Texinfo-formatted snippets for inclusion in
4580 the manual (via Texinfo's @include directive)
4581 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4582 the test case to Dave Roberts)
4583 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4584 pointers. (reported by Sean Ross)
4585 * bug fix: PROFILE output is printed nicely even for large numerical
4586 values. (thanks to Zach Beane)
4587 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4588 greater than 32 handle EOF correctly.
4589 * bug fix: on X86 an immediate argument of the IMUL instruction is
4590 correctly printed in disassembly. (thanks to Lutz Euler)
4591 * bug fix: class slots in redefined classes preserve their old
4592 values. (thanks to Bruno Haible and Nikodemus Siivola)
4593 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4594 succeeds. (reported by Marco Baringer)
4595 * fixed some bugs revealed by Paul Dietz' test suite:
4596 ** READ-SEQUENCE now works on ECHO-STREAMs.
4597 ** RATIONALIZE works more according to its specification. (thanks
4600 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4601 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4602 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4603 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4604 should matter to you only if you rebind the printer control
4605 variables and then find you want different bindings in the
4606 debugger than in the ordinary execution of your program.)
4607 * The runtime build system has been tweaked to support building
4608 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4609 assembler and linker. (thanks to Nikodemus Siivola)
4610 * Unbound, undefined, undeclared variables now trigger full
4611 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4612 more often programmer error than deliberate exploitation of undefined
4614 * optimization: the hash algorithm for strings has changed to one
4615 that is less vulnerable to spurious collisions. (thanks to Juho
4617 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4618 needless bounds checking. (thanks to Juho Snellman)
4619 * optimization: implemented multiplication as a modular
4620 (UNSIGNED-BYTE 32) operation on the PPC backend.
4621 * fixed some bugs revealed by Paul Dietz' test suite:
4622 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4624 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4625 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4626 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4628 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4630 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4632 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4633 their output stream on EOF from read.
4634 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4635 have been read to end-of-file.
4636 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4638 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4639 description of determination of which consecutive characters
4641 ** Printing the "Space" character with escaping on now yields "#\\ ",
4642 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4643 ** Reading floating-point numbers with *READ-BASE* set to a number
4644 less than 10 works correctly.
4645 ** Reading floating-point numbers with *READ-BASE* set to a number
4646 more than 10 works correctly.
4647 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4648 the readtable currently in effect.
4650 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4651 * minor incompatible change: parsing of namestrings on a physical
4652 (Unix) host has changed; numbers after the final #\. in a
4653 namestring are no longer interpreted as a version field. This is
4654 intented to be largely invisible to the user, except that the
4655 meaning of the namestring "*.*.*" has changed: it now refers to a
4656 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4657 should usually be replaced by
4658 (make-pathname :name :wild :type :wild :version :wild)
4659 with the added benefit that this is more likely to be portable.
4660 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4661 option to OPEN now signals an error if the file being opened
4662 exists; this may have an impact on existing code.
4663 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4664 signals received, on the PowerPC platforms (both Linux and
4665 Darwin). (thanks to Pierre Mai for pointing out the location of
4667 * several fixes on OS X: The system now builds and runs cleanly on
4668 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4669 (thanks to Brian Mastenbrook)
4670 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4671 second-resolution: integer multiples of 1/3600 between -24 and 24.
4672 (thanks to Vincent Arkesteijn)
4673 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4674 type when called with 1 argument; PEEK-CHAR checked type of
4675 PEEK-TYPE only after having read first character from a
4676 stream. (reported by Peter Graves)
4677 * bug fix: the garbage collector now has much better locality
4678 behaviour, and in particular no longer treats all memory as being
4679 exhausted when many small objects point to each other in a deeply
4681 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4682 recognized as being TYPEP their class.
4683 * bug fix: the PUSHNEW documentation string has been corrected.
4684 (thanks to Vincent Arkesteijn)
4685 * bug fix: defaulting of the value for the last of an atypically
4686 large number of multiple values being bound was not being
4687 performed correctly on the Alpha or PPC platforms
4688 * optimization: implemented multiplication as a modular
4689 (UNSIGNED-BYTE 32) operation on the x86 backend.
4690 * optimization: SEARCH on simple-base-strings can now be open-coded.
4691 (see also contrib/compiler-extras.lisp for inspiration for
4692 teaching the compiler about the Boyer-Moore algorithm).
4693 * value, returned by MAX (and MIN) called with several EQUALP, but
4694 not EQL, arguments now does not depend on compiler settings.
4695 * fixed some bugs revealed by Paul Dietz' test suite:
4696 ** in stack analysis liveness information is propagated from
4697 non-local entry points.
4698 ** pathwise CAST removing failed when the CAST node did not start
4700 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4701 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4703 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4704 host is already defined.
4705 ** RENAME-FILE works on streams instead of signalling an internal
4707 ** PEEK-CHAR uses the current readtable when determining whether
4708 or not a character is whitespace.
4709 ** MERGE-PATHNAMES handles the case when the pathname does not
4710 specify a name while the default-pathname specifies a version.
4711 ** Pathnames now stand a better chance of respecting print/read
4713 ** Attempting to use standardized file system operators with a
4714 pathname with invalid :DIRECTORY components signals a
4716 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4718 ** DIRECTORY on logical pathnames is more correct.
4719 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4720 signal a TYPE-ERROR if their argument is not a stream.
4721 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4722 designator argument does not designate a stream.
4723 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4724 examining the synonym.
4725 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4727 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4728 element-type larger than ([UN]SIGNED-BYTE 32).
4730 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4731 * When built with the :SB-FUTEX feature, threaded builds now take
4732 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4733 for faster/more reliable mutex and condition variable support.
4734 * Incompatible change (but one you probably shouldn't have been using
4735 anyway): the interface and code for arbitrating between multiple
4736 threads in the same user session has been redesigned.
4737 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4738 error when called without an explicit environment argument.
4739 (thanks to Nikodemus Siivola)
4740 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4741 confused about their position. (thanks to Adam Warner and Gerd
4743 * bug fix: Pretty printing backquoted forms with unquotations in the
4744 argument list position of various code constructs such as LAMBDA
4745 now works correctly. (reported by Paul Dietz)
4746 * bug fix: Pretty printing unquotations no longer loses all
4747 stream position information.
4748 * optimization: performance of string output streams is now less
4749 poor for multiple small sequence writes.
4750 * optimization: performance of CSUBTYPEP in the presence of complex
4751 expressions involving CONS and NOT many times has been improved.
4752 (reported by Paul Dietz)
4753 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4755 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4756 streams for the REPL, for the debugger, and so on. (thanks to
4758 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4759 * fixed some bugs revealed by Paul Dietz' test suite:
4760 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4761 is ignored if it is too small, rather than propagating through
4762 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4763 ** extremely complex negations of CONS types were not being
4764 sufficiently canonicalized, leading to inconsistencies in
4766 ** VALUES tranformer lost derived type.
4768 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4769 * fixed a bootstrapping bug: the build process no longer assumes
4770 that the various BOOLE-related constants have the same value in
4771 host and target lisps. (noted by Paul Dietz' test suite on an
4772 SBCL binary built from CLISP)
4773 * The system can now be dynamically linked on the MIPS platform,
4774 which enables dynamic loading of foreign code from Lisp. (thanks
4775 to Ralf Baechle for discussions on the MIPS ABI)
4776 * The system now records debugging information for its own source
4777 files in a filesystem-position-independent manner, relative to
4778 the "SYS" logical host.
4779 * fixed a compiler bug: MV-LET convertion did not check references
4780 to the "max args" entry point. (reported by Brian Downing)
4781 * tweaked disassembly notes to be less confident about proclaiming
4782 some instruction as an LRA. (thanks to Brian Downing)
4783 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4784 now each have their own history, command character, and other
4785 characteristics. (thanks to David Lichteblau)
4786 * fixed some bugs revealed by Paul Dietz' test suite:
4787 ** compiler failure in compiling LOGAND expressions including a
4789 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4790 shift greater than 32.
4791 ** FLUSH-DEST did not mark blocks for type check regeneration.
4792 ** HANDLER-CASE failed to accept declarations in handler clauses
4793 in some circumstances.
4795 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4796 * New code in contrib/sb-introspect (still probably not entirely
4797 stable yet) provides some support for smart Lisp development
4798 environments like SLIME.
4799 * The conditions signalled for errors occurring when loading .fasl
4800 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4801 in a way which should help ASDF recover gracefully.
4802 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4803 stuff has been cleaned up. If you code contrib/ stuff, this might
4804 affect you, and you can look at contrib/README, contrib/STANDARDS,
4805 and/or the 0.8.4.27 diff to check.
4806 * In full calls the compiler now does not generate checks for declared
4807 argument types for all arguments.
4808 * various threading fixes
4809 ** and some experimental patches which didn't make it into
4810 the main tree for this release, but which are shipped in
4811 contrib/experimental-thread.patch as a possible fix for some
4812 failures (deadlock, spinning...) in GC-intensive multithreaded
4814 * fixed PPC build problem (source code incompatibility of different
4815 library versions): added offsetof() hackery which attempts to divine
4816 where glibc maintainers put uc_mcontext today
4817 * fixed bug 282: compiler does not trust type assertions while passing
4818 arguments to a full call.
4819 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4820 &OPTIONAL VALUES type parameter.
4821 * fix bug 214: algorithm for noting rejected templates is now more
4822 similar to that of template seletion. (also reported by rydis on
4824 * fixed bug 141b: printing backquoted information readably and prettily
4825 inserts a space where necessary.
4826 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4827 (CHARACTER 10) are now reported as errors, rather than propagated
4828 as unknown types. (reported by piso on #lisp)
4829 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4830 with values NIL and :ERROR. (thanks to Milan Zamazal)
4831 * fixed bug 191c: CLOS now does proper keyword argument checking as
4832 described in CLHS 7.6.5 and 7.6.5.1.
4833 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4834 longer raise an error; further, using a list as a for-as-arithmetic
4835 counter now raises a meaningful error.
4836 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4837 now understood by sequence creation functions such as MAKE-SEQUENCE
4839 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4840 a STRING-INPUT-STREAM.
4841 * compiler enhancement: SIGNUM is now better able to derive the type
4843 * type declarations inside WITH-SLOTS are checked. (reported by
4845 * fixed some bugs revealed by Paul Dietz' test suite:
4846 ** incorrect optimization of TRUNCATE for a positive first
4847 argument and negative second.
4848 ** compiler failure in let-convertion during flushing dead code.
4849 ** compiler failure while deriving type of TRUNCATE on an
4850 interval, containing 0.
4851 ** ASH of a negative bignum by a negative bignum count now returns
4853 ** intersection of CONS types now canonicalizes properly, fixing
4854 inconsistencies in SUBTYPEP.
4856 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4857 * incompatible change: The --disable-debugger command line
4858 option now clobbers the debugger at a more fundamental
4859 level, by redefining #'INVOKE-DEBUGGER instead of by
4860 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4861 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4862 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4863 enter the debugger REPL and then suffer recursive errors
4864 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4865 while under the new system, BREAK in --disable-debugger mode
4866 terminates the system just as an unhandled error would.
4867 * fixed compiler performance when processing loops with a step >1;
4868 * bug fix: DOCUMENTATION now retrieves generic function
4869 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4870 support has been systematized, and now supports the methods
4871 specified by ANSI, along with a default method and a method for
4872 slot documentation. (reported by Nathan Froyd)
4873 * bug fix: effective methods associated with a generic function are
4874 no longer cached over a change of that generic function's method
4875 combination. (reported by Andreas Fuchs)
4876 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4877 names a non-existent directory. (thanks to Andreas Fuchs)
4878 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4879 the PPC platform, lead to stack corruption; this has been fixed.
4880 (reported by Rainer Joswig)
4881 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4882 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4883 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4884 arithmetic in general, is now much more reliable on the PPC
4886 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4887 platform now returns the right answer.
4888 * optimization: restored some effective method precomputation in
4889 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4890 precomputation is now tunable.
4891 * optimization: compiler-internal data structure use has been
4892 reviewed, and changes have been made that should improve the
4893 performance of the compiler by about 20%.
4894 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4895 simple-base-strings and simple-bit-vectors is improved.
4896 * optimization: the optimization of 32-bit logical and arithmetic
4897 functions introduced in version 0.8.3 on the x86 has been
4898 implemented on the mips, ppc and sparc platforms; an
4899 implementation of the same facility, but for 64-bit arithmetic,
4900 has been added for the alpha.
4901 * microoptimization: the compiler is better able to make use of the
4902 x86 LEA instruction for multiplication by constants.
4903 * bug fix: in some situations compiler did not report usage of
4904 generic arithmetic in (SPEED 3) policy.
4905 * bug 145b fix: compiler used wrong type specifier while converting
4906 MEMBER-types to numeric.
4907 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4909 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4910 index argument now works properly on the Alpha platform.
4911 * bug fix: floating point exception treatment on the Alpha platform
4913 * bug fix: FILE-POSITION works much better on string input and
4914 output streams. (thanks to Nikodemus Siivola)
4915 * bug fix: many threading/garbage collection symptoms sorted.
4916 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4917 might be pseudo-atomic.
4918 * internal change: Stopping for GC is now done with signals not
4919 ptrace. GC is now done in whichever thread wanted it, instead of
4921 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4923 * bug fix: result form in DO is not contained in the implicit
4925 * incompatible change: ICR structure is changed; the value part of
4926 CONTINUATION is now called LVAR; corresponding functions are
4927 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4928 * added type deriver for ISQRT (thanks to Robert E. Brown).
4929 * bug fix: better support for loading from the command line when an
4930 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4932 * fixed some bugs revealed by Paul Dietz' test suite:
4933 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4934 ** ROUND and FROUND now give the right answer when given very
4935 small float arguments.
4936 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4938 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4939 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4940 ** LCM should return a non-negative integer.
4941 ** PARSE-INTEGER returned the index of a terminator instead of the
4942 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4943 ** PARSE-INTEGER returned an incorrect index being applied to a
4945 ** LCM with two arguments of 0 returns 0 rather than signalling
4947 ** unsigned addition of a 32-bit constant with the high bit set no
4948 longer causes an internal compiler error on the x86.
4949 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4950 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4951 with negative last argument.
4952 ** byte specifiers with zero size and position no longer cause
4953 an error during type derivation.
4954 ** bignum multiplication on the Alpha platform now returns the
4956 * porting: The system now builds on SuSE AMD64, although it still
4957 generates a 32-bit binary.
4958 * .fasl file incompatibility: The fasl file version number has
4959 been incremented (because of the changes to internal compiler
4960 data structures referred to above).
4962 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4963 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4964 more accurately, on the Darwin kernel running on PowerPC hardware.
4965 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4966 * Compiler code deletion notes now signal a condition of type
4967 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4968 an associated MUFFLE-WARNING restart.
4969 * The compiler now performs limited argument count validation of
4970 constant format strings in FORMAT, and where appropriate in ERROR,
4971 CERROR and WARN. (thanks to Gerd Moellmann)
4972 * New ASDF-INSTALL contrib can be used for automatic download and
4973 installation of third-party Lisp code from CCLAN or other sites
4975 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4976 which forces another thread to execute a function supplied by the
4978 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4979 now accept and act upon their :ELEMENT-TYPE keyword argument.
4980 (reported by Martin Atzmueller, Edi Weitz)
4981 * bug fix: FILE-POSITION now accepts position designators up to
4982 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4983 is the greater. (thanks to Patrik Nordebo)
4984 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4985 Kalle Olavi Niemitalo)
4986 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4987 printable. (reported by Eric Marsden)
4988 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4989 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4990 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4991 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4992 (thanks to Stig Sandoe)
4993 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4994 UNREAD-CHAR now correctly includes the unread character in the
4995 target sequence. (thanks to Gerd Moellmann)
4996 * bug fix in threaded builds: the system can now be suspended and
4997 resumed by shell job control with minimal disruption.
4998 * bug fixes in times and timezones >2038AD
4999 * better handling of "where is GNU make?" problem in build scripts
5000 (thanks to Nikodemus Siivola)
5001 * new optimization: inside a named function any reference to a
5002 function with the same name is considered to be a self-reference;
5003 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5004 optimization quality.
5005 * new optimization on x86: logical functions and + now have
5006 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5007 used when the result is truncated to 32 bits.
5008 * VALUES declaration is partially enabled.
5009 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5010 * fixed some bugs revealed by Paul Dietz' test suite:
5011 ** The system now obeys the constraint imposed by
5012 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5013 types form a lattice under type intersection.
5014 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5015 ** ASSOC now ignores NIL elements in an alist.
5016 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5017 and (1+ MOST-POSITIVE-FIXNUM) answers.
5018 ** The addition of a method with invalid qualifiers to a generic
5019 function does not cause an error to be signalled immediately;
5020 a warning is signalled, and the error is generated only on
5021 calling the generic function.
5022 * changed .fasl file version number, in part to add type codes for
5023 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5024 obscure ANSI requirements
5026 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5027 * fixed bug 148: failure to inline-expand a local function left
5028 garbage, confusing the compiler.
5029 * fixed bugs 3cd: structure slot readers perform type check if the
5030 slot can have an invalid value (i.e. it is either not initialized
5031 or can be written with a less specific slot writer).
5032 * bug fix: the compiler now traps array references to elements off
5033 the end of an array; previously, the bounds checking in some
5034 circumstances could go off-by-one.
5035 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5037 * type declarations for array element types now obey the description
5038 on the CLHS page "Declaration TYPE", as per discussions on
5039 sbcl-help around 2003-05-08. This means that a declaration
5040 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5041 declaration, all references to BAR will be asserted or assumed
5042 (with THE, so dependent on compiler policy) to involve objects of
5043 type FOO. Note that no such declaration is implied in
5044 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5045 * declared types of functions from the "Conditions"
5046 chapter. (reported by Paul Dietz)
5047 * bug fix: CERROR accepts a function as its first argument.
5048 * bug fix: NTH an NTHCDR accept a bignum as index
5049 arguments. (reported by Adam Warner)
5050 * optimization: character compare routines now optimize comparing
5051 against a constant character. (reported by Gilbert Baumann)
5052 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5053 argument now works properly on the MIPS platform.
5054 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5055 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5056 declared to have a functional type, does not cause an error
5058 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5059 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5060 * fixed bug: if last continuation of a deleted block has a
5061 destination, this destination should be deleted too. (reported by
5063 * fixed a bug in the bootstrap process: the host compiler's values
5064 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5065 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5066 test case from Patrik Nordebo)
5067 * improved the ability of the disassembler on the PPC platform to
5068 provide helpful disassembly notes.
5069 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5070 the class in more cases than previously.
5071 * bug fix: FILE-POSITION now understands :START and :END for
5072 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5073 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5074 8) data. (thanks to David Lichteblau)
5075 * bug fix: it is possible to add a method to a generic function
5076 without lambda list.
5077 * bug fix: reader failed to signal END-OF-FILE inside an
5078 object representation. (reported by Nikodemus Siivola)
5079 * fixed some bugs revealed by Paul Dietz' test suite:
5080 ** LAST and [N]BUTLAST should accept a bignum.
5081 ** condition slot accessors are methods.
5082 ** (VECTOR NIL) is a subtype of STRING.
5084 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5085 * minor incompatible change: some nonsensical specialized lambda
5086 lists (used in DEFMETHOD) which were previously ignored now signal
5088 * minor incompatible change: the system is now aware of the types of
5089 variables in the COMMON-LISP package, and will signal errors for
5090 most violations of these type constraints (where previously they
5091 were silently accepted).
5092 * minor incompatible change: COMPILE-FILE now uses the freedom
5093 afforded (ANSI 3.2.2.3) to use derived function types for
5094 functions defined in the same file. This also permits the system
5095 to warn on static type mismatches and function
5096 redefinition. (Currently it does not work with high DEBUG level.)
5097 * minor incompatible change: VALUES declaration is disabled.
5098 * When issuing notes, the compiler now signals a condition of type
5099 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5100 restart for use in user handlers. It is expected that the
5101 COMPILER-NOTE condition will eventually become a condition
5102 supertype to a hierarchy of note types, which will then be
5103 handleable in a similar fashion. However, at the moment, no such
5104 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5105 but it's an implementation detail, not a classification for the
5107 * Changes in type checking closed the following bugs:
5108 ** type checking of unused values (192b, 194d, 203);
5109 ** template selection based on unsafe type assertions (192c, 236);
5110 ** type checking in branches (194bc).
5111 * A short form of VALUES type specifier has ANSI meaning (it has
5112 increased the number of situations when SBCL cannot perform type
5114 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5115 keywords or constants is permissible.
5116 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5117 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5118 classes. (thanks to Antonio Martinez)
5119 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5120 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5121 argument to a pretty-print stream. Instead, it leaves any such
5122 operations to DESCRIBE-OBJECT methods.
5123 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5125 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5126 lambda lists. (thanks to David Lichteblau)
5127 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5128 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5129 (thanks to Gerd Moellmann)
5130 * fixed bug 246: increased compilation speed of long
5131 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5133 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5135 * DEFCONSTANT now throws a condition of type
5136 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5137 constant to a non-EQL value; CONTINUE and ABORT restarts
5138 respectively change and preserve the value.
5139 * fixed bug 63: The code walker, part of the implementation of CLOS,
5140 is now better at handling symbol macros.
5141 * bug fix: There is no longer an internal implementation type named
5142 CL:LENGTH. (reported by Raymond Toy)
5143 * bug fix: In macro-like defining macros/special operators the
5144 implicit block does not enclose the lambda list.
5145 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5146 enclosed in parentheses) are not suitable as type specifiers, and
5147 their use properly signals an error now.
5148 * bug fix: An argument count mismatch for a type specifier in code
5149 being compiled no longer causes an unhandled error at compile
5150 time, but signals a compile-time warning.
5151 * fixed simple vector readable printing
5152 * bug fix: DESCRIBE takes more care over whether the class
5153 precedence list slot of a class is bound before accessing it.
5154 (reported by Markus Krummenacker)
5155 * bug fix: FORMATTER can successfully compile pretty-printer format
5156 strings which use variants of the ~* directive inside.
5157 * bug fix: SEARCH now applies its TEST predicate to the elements of
5158 the arguments in the correct order. (thanks to Wolfhard Buss)
5159 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5160 in type inference. (thanks to Robert E. Brown)
5161 * bug fix: Reading in symbols with an explicit package name of ""
5162 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5163 * fixed some bugs revealed by Paul Dietz' test suite:
5164 ** NIL is now allowed as a structure slot name.
5165 ** Arbitrary numbers, not just REALs, are allowed in certain
5166 circumstances in LOOP for-as-arithmetic clauses.
5167 ** Multiple class redefinitions before slot access no longer
5168 causes a type error.
5169 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5170 association between the name and a class.
5171 ** Generic functions with non-standard method-combination and over
5172 five methods all of which return constants no longer return NIL
5173 after the first few invocations. (thanks to Gerd Moellmann)
5174 ** CALL-NEXT-METHOD with no arguments now passes the original
5175 values of the arguments, even in the presence of assignment.
5176 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5178 ** DISASSEMBLE works with closures and funcallable instances.
5179 ** ADD-METHOD now returns the generic function, not the new method.
5180 ** FIND-METHOD signals an error if the lengths of the specializers
5181 is incompatible with the generic function, even if the ERRORP
5183 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5184 which its argument is a member.
5185 ** DEFCLASS only redefines the class named by its class-name
5186 argument if that name is the proper name of the class;
5187 otherwise, it creates a new class.
5188 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5189 of the UNBOUND-SLOT condition to the name of the slot.
5190 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5191 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5192 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5193 SLOT-MAKUNBOUND in the specified fashion.
5195 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5196 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5197 cross-compilation host. As a consequence, we can now bootstrap our
5198 way up to SBCL starting with a bare gcc toolchain and human-readable
5199 source code (first the source to CLISP, then the source to SBCL).
5200 * A contributed module containing a partial implementation of the
5201 simple-streams interface has been included. (thanks to Rudi
5203 * A contributed module implementing the RFC1321 Message Digest
5204 Algorithm, known as MD5, has been included.
5205 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5206 no longer has any effect, as the code controlled by this feature
5207 has been deleted. (As far as we know, no-one has ever built using
5208 this feature, and its semantics were confused in any case).
5209 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5210 work on conditions (as required by the ANSI specification),
5211 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5212 expected behaviour on conditions. Users should note, however,
5213 that such behaviour is not required by the ANSI specification,
5214 and so use of this behaviour may render their code unportable.
5215 * fixed some bugs revealed by Paul Dietz' test suite:
5216 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5218 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5219 ** SXHASH on condition objects no longer returns NIL.
5220 ** :ALLOCATION :CLASS slots are better treated; their values are
5221 updated on class redefinition, and initforms inherited from
5222 superclasses are applied.
5223 ** REMOVE-METHOD returns its generic function argument even when
5224 no method was removed.
5225 ** SHARED-INITIALIZE now initializes the values of the requested
5226 slots, including those with :ALLOCATION :CLASS.
5227 ** ALLOCATE-INSTANCE now works on structure classes defined via
5228 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5230 ** SLOT-EXISTS-P now works on conditions, as well as structures
5232 ** MAKE-LOAD-FORM now has the required methods on
5233 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5234 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5235 keyword, and now implements the SLOT-NAMES argument.
5236 ** methods with &OPTIONAL arguments no longer allow too many
5237 arguments to be passed in the call without error.
5238 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5239 option is consistent with the required arguments of the generic
5240 function lambda list.
5241 * bug fix: REQUIRE accepts a string designator. (Thanks to
5243 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5244 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5245 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5246 * bug fix: The compiler now checks for duplicated variables in macro
5248 * bug fix: SETQ on globals returns the correct value.
5249 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5250 not a COMPILER-ERROR (followed by some other strange error on
5251 choosing the CONTINUE restart).
5252 * bug fix: make.sh and friends are now more consistent in the way that
5253 they look for GNU "make".
5255 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5256 * experimental native threads support (on x86 Linux >=2.4 only).
5257 This is not compiled in by default: you need to add :SB-THREAD to
5258 the target features. See the "Beyond ANSI" chapter of the manual
5260 * fix for longstanding nonANSIism: The old distinction between
5261 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5262 The return value from CL:FIND-CLASS is now a CLOS class, and
5263 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5264 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5265 * An interface to the MetaObject Protocol, as described in Kiczales,
5266 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5267 MIT Press, 1991, is available from the SB-MOP package.
5268 * incompatible change: the SB-PCL package should now be considered
5269 a private implementation detail, and no longer a semi-private MOP
5271 * minor incompatible change: due to rearrangement for threads, the
5272 control stack and binding stack are now allocated at arbitrary
5273 addresses instead of being hardcoded per-port. Users affected by
5274 this probably have to be doing advanced things with shared
5275 libraries, and will know who they are.
5276 * minor incompatible change: Previously, all --eval forms used were
5277 processed with READ before any of them were processed with EVAL.
5278 Now each --eval form is processed with both READ and EVAL before
5279 the next --eval form is processed. (Thus package operations like
5280 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5281 work as the user might reasonably expect.)
5282 * minor incompatible change: *STANDARD-INPUT* is now only an
5283 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5285 * minor incompatible change: Y-OR-N-P is now character-oriented,
5286 not line oriented. Also, YES-OR-NO-P now works without errors.
5287 (thanks to Antonio Martinez)
5288 * sb-aclrepl module improvements: an integrated inspector, added
5289 repl features, and a bug fix to :trace command.
5290 * Known functions, which cannot be open coded by the backend, are
5291 considered to be able to check types of their arguments. (fixing
5292 a bug report by Nathan J. Froyd)
5293 * fixed a bug in computing method discriminating functions: It is
5294 now possible to define methods specialized on classes which have
5295 forward-referenced superclasses. (thanks to Gerd Moellmann)
5296 * fixed evaluation order in optional entries (reported by Gilbert
5298 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5299 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5300 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5301 required-by-AMOP NAME argument, as well as CLASS and
5302 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5303 * fixed bug 20: DEFMETHOD can define methods using names that are
5304 not the proper names of classes to designate class specializers.
5305 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5306 Unix file descriptors, instead of blowing up. (thanks to Antonio
5308 * Garbage collection refactoring: user-visible change is that a
5309 call to the GC function during WITHOUT-GCING will not do garbage
5310 collection until the end of the WITHOUT-GCING. If you were doing
5311 this you were probably losing anyway.
5312 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5313 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5314 TYPEP the latter but not the former.
5315 * The compiler issues a full WARNING for calls to undefined functions
5316 with names from the CL package.
5317 * MAP-INTO for a vector destination is open coded. (reported by
5318 Brian Downing on c.l.l)
5319 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5320 documentation string.
5321 * fixed some bugs revealed by Paul Dietz' test suite:
5322 ** COPY-ALIST now signals an error if its argument is a dotted
5324 ** Condition slots are now accessed more correctly in the presence
5325 of multiple initargs for a given slot.
5326 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5327 exclude restarts of the same name associated with a different
5329 ** DEFCLASS of forward-referenced classes with another
5330 forward-referenced class in the superclasses list no longer
5332 ** Condition slots are now initialized once each, not multiple
5333 times. (thanks to Gerd Moellmann)
5334 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5336 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5337 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5338 arguments contain duplicated elements.
5339 ** RESTART-CASE understands local macros.
5340 ** RESTART-CASE associates exactly its own restarts with a condition.
5341 ** ENDP in safe mode checks its argument to be of type LIST.
5342 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5343 in question is unbound.
5344 ** Optimized MAKE-INSTANCE functions no longer cause internal
5345 assertion failures in the presence of duplicate initargs.
5346 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5347 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5348 propagated even in the ctor optimized implementation of
5350 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5352 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5353 * a better implementation of SXHASH on (simple) bit vectors,
5354 measured both in execution speed and in distribution of results
5355 over the positive fixnums, has been installed. Likewise, a better
5356 implementation of EQUAL for simple bit vectors is now available.
5357 * fixed CEILING optimization for a divisor of form 2^k.
5358 * fixed bug 240 (emitting extra style warnings "using the lexical
5359 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5360 by Antonio Martinez)
5361 * fixed SXHASH, giving different results for NIL depending on type
5362 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5363 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5364 variable. (found by Rolf Wester)
5365 * SBCL does not ignore type declarations for special
5366 variables. (reported by rif on c.l.l 2003-03-05)
5367 * some bug fixes in contrib/sb-aclrepl/
5368 * fixed some bugs revealed by Paul Dietz' test suite:
5369 ** a bug in the CONS type specifier, whereby the CAR and CDR
5370 types got intertwined, has been fixed;
5371 ** the type system is now able to reason about the interaction
5372 between INTEGER and RATIO types more completely;
5373 ** APPEND, [N]REVERSE and NRECONC check that those their
5374 arguments, which must be proper lists, are really so;
5375 ** An array specialized to be unable to hold elements has been
5376 implemented, as required -- yes, really -- by ANSI;
5377 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5378 on malformed property lists;
5380 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5381 * incompatible packaging change: in line with Unix convention,
5382 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5383 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5384 * REQUIRE and PROVIDE are now optionally capable of doing something
5385 useful. See the documentation string for REQUIRE.
5386 * infrastructure for a managed SBCL contrib system: contributed
5387 modules in this release include:
5388 ** the ASDF system definition facility;
5389 ** an interface to the BSD Sockets API;
5390 ** an ACL-like convenience interface to the repl;
5391 (thanks to Kevin Rosenberg)
5392 ** an implementation of ROTATE-BYTE, with efficient implementation
5394 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5395 gives a closer approximation to the right answer than previously.
5396 (thanks to Raymond Toy)
5397 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5398 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5399 optional environment arguments, as required by ANSI.
5400 * fixed bugs in other functions taking environment objects, allowing
5401 calls with an explicit NIL environment argument to be compiled
5403 * fixed bug 228: primary return values from
5404 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5405 COMPILE or FUNCTION.
5406 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5407 :TYPE will no longer signal errors on innocuous objects.
5408 * fixed bug 231b: SETQ is better at respecting type declarations in
5409 the lexical environment.
5410 * fixed a bug in DEFCLASS: classes named by symbols with no or
5411 unprintable packages can now be defined.
5412 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5413 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5414 * fixed compiler failure related to checking types of functions.
5415 (reported by Robert E. Brown)
5416 * the compiler is now much more consistent in its error-checking
5417 treatment of bounding index arguments to sequence functions: in
5418 (SAFETY 3) code, errors will be signalled in almost all cases if
5419 invalid sequence bounding indices are passed to functions defined
5420 by ANSI to operate on sequences.
5421 * fixed a bug in the build procedure: documentation of SBCL-specific
5422 packages is now preserved and available in the final Lisp image.
5423 * lifted FDEFINITION lookup out of loops in the implementation of
5424 many list operations. (thanks to Robert E. Brown)
5425 * fixed a bug in the reader: the #n# reader macro now works for
5426 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5427 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5428 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5429 E. Brown and Tony Martinez respectively)
5430 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5431 SLOT-BOUNDP: in particular, it is now able to optimize them much
5432 better, and is now not vulnerable to having packages renamed.
5433 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5434 always called when a slot is not present in an instance. (thanks
5436 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5437 longer signal an error on unreading a character following EOF on
5438 the previous constituent stream. (thanks to Tony Martinez)
5439 * fixed some bugs revealed by Paul Dietz' test suite:
5440 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5441 not just nonnegative fixnums;
5442 ** the logical bit-array operators such as BIT-AND now accept an
5443 explicit NIL for their "opt-arg" argument (to indicate a
5444 freshly-consed result bit-array);
5445 ** ELT now signals an error on an invalid sequence index in safe
5447 ** the type system is now cleverer about negations of numeric
5448 types, and consequently understands the BIGNUM and RATIO types
5450 ** the type system is now cleverer about the interaction between
5451 INTEGER and RATIO types: while bugs still remain, many more
5452 cases are accurately computed;
5453 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5454 if it is in the last clause;
5455 ** CONSTANTLY now correctly returns a side-effect-free function in
5457 ** DECLARE is no longer treated as a special-operator; in
5458 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5459 * incremented fasl file version number due to the change in the
5460 DEFSTRUCT-SLOT-DESCRIPTION structure.
5462 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5463 * minor incompatible change: code processed by the "interpreter" or
5464 EVAL now has a compilation optimization policy of (DEBUG 2)
5465 (changed from (DEBUG 1)) to improve debuggability of interactive
5466 development, and to allow the use of the debug RETURN command in
5468 * an experimental implementation of the RETURN command for the
5469 debugger has been included. (thanks to Frederik Kuivinen)
5470 * fixed bug 62: constraints were not propagated into a loop.
5471 * fixed bug in embedded calls of SORT (reported and investigated by
5473 * fixed some bugs revealed by Paul Dietz' test suite:
5474 ** printing and reading of arrays with some dimensions having
5475 length 0 (thanks to Gerd Moellmann);
5476 ** BOA constructor with &AUX argument without a default value does
5477 not cause a type error;
5478 ** CONSTANTP now returns true for all self-evaluating objects.
5480 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5481 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5482 accessors that are related by inheritance, as specified in the
5483 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5484 Valtteri Vuorikoski)
5485 * The compiler is now able to inline functions that were defined in
5486 a complex lexical environment (e.g. inside a MACROLET).
5487 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5489 * Support for the upcoming FreeBSD-5.0 release has been included.
5490 (thanks to Dag-Erling Smorgrav)
5491 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5492 effect when it is not in a toplevel context.
5493 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5494 stand a better chance of being correct. (thanks to Gerd
5496 * fixed bug in COERCE, which now signals an error on coercing a
5497 rational to a bounded real type which excludes the expected
5499 * The compiler is now able to derive types more accurately from the
5500 COERCE and COMPILE functions.
5501 * fixed bug 223: functional binding is considered to be constant
5502 only for symbols in the CL package.
5503 * fixed bug 231: SETQ did not check the type of a variable being set
5504 (reported by Robert E. Brown)
5505 * A new optimization for MAKE-INSTANCE has been included, fixing
5506 various bugs (including relating to :ALLOCATION :CLASS slots and
5507 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5509 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5510 ** As required by ANSI, LOOP now disallows anonymous collection
5511 clauses such as COLLECT I in conjunction with aggregate boolean
5512 clauses such as THEREIS (= I 1);
5513 ** LOOP now signals an error when any variable is reused in the
5514 same loop (including the potentially useful construct analogous
5515 to WITH A = 1 WITH A = (1+ A);
5516 ** IT is only a special loop symbol within the first clause of a
5517 conditional loop clause;
5518 ** LOOP with a typed iteration variable over a hashtable now
5519 signals a type error iff it should.
5520 * fixed some other bugs revealed by Paul Dietz' test suite:
5521 ** FILE-STREAM now names the class previously known as FD-STREAM;
5522 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5523 argument) no longer signals an error;
5524 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5525 of the slot symbol, rather than using the current package
5526 ((:CONC-NAME "") continues to intern the slot's name in the
5528 * incremented fasl file version number, because of the incompatible
5529 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5530 of the new implementation of DEFINE-COMPILER-MACRO.
5532 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5533 * Support for building SBCL for MIPS platforms running in
5534 little-endian mode has now been checked in, and basic
5535 functionality on said platforms verified.
5536 * minor incompatible change: PCL now records the pathname of a file
5537 in which methods and the like are defined, rather than its
5539 * minor incompatible change: TRUENAME now considers the truename of
5540 a file naming a directory to be the pathname with :DIRECTORY
5541 component indicating that directory.
5542 * minor incompatible change: a NAMED clause in the extended form of
5543 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5544 reason for the previous behaviour is unclear.
5545 * more systematization and improvement of CLOS and MOP conformance
5546 in PCL (thanks to Gerd Moellman and Pierre Mai):
5547 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5549 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5550 primary methods with no specializers;
5551 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5553 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5554 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5555 FORWARD-REFERENCED-CLASSes; error reporting on
5556 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5558 ** SXHASH on CLOS instances now uses a slot internal to the
5559 instance to return different numbers on distinct instances,
5560 while preserving the same return value through invocations of
5562 ** DEFMETHOD signals errors when methods with longer incongruent
5563 lambda lists are added to generic functions;
5564 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5565 CLASS, as specified in AMOP;
5566 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5567 on the order returned by the primary method for classes of
5568 class STANDARD-CLASS;
5569 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5570 * fixed some bugs shown by Paul Dietz' test suite:
5571 ** DOLIST puts its body in TAGBODY;
5572 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5574 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5575 value producing form;
5576 ** if more variables are given to PROGV than values, extra
5577 variables are bound and made to have no value;
5578 ** NSUBSTITUTE on list arguments gets the right answer with
5580 ** ELT signals an error of type TYPE-ERROR when the index argument
5581 is not a valid sequence index;
5582 ** LOOP signals (at macroexpansion time) an error of type
5583 PROGRAM-ERROR when duplicate variable names are found;
5584 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5585 ** FUNCALL of special-operators now cause an error of type
5587 ** PSETQ now works as required in the presence of side-effecting
5588 symbol-macro places;
5589 ** NCONC accepts any object as its last argument;
5590 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5592 ** loop-for-as-package does not require a package to be explicitely
5594 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5596 * fixed bug 166: compiler preserves "there is a way to go"
5597 invariant when deleting code.
5598 * fixed bug 172: macro lambda lists with required arguments after
5599 &REST arguments now cause an error to be signalled. (thanks to
5601 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5602 bug. (thanks to Matthew Danish)
5603 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5605 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5606 arguments are lexically rebound. (thanks to Gerd Moellmann and
5608 * fixed bug 194: error messages are now more informative when there
5609 is no primary method applicable in a call to a generic
5610 function. (thanks to Gerd Moellmann)
5611 * fixed bug in command line argument checking (thanks to Julian
5613 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5614 (thanks to Matthew Danish)
5615 * incremented fasl file version number, because of the
5616 SXHASH-related changes in the layout of CLOS data structures
5618 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5619 * minor incompatible change: The runtime (the Unix executable named
5620 "sbcl") is now much pickier about the .core files it will load.
5621 Essentially it now requires .core files to descend from the same
5622 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5623 as the runtime does. (The intent is to prevent the crashes which
5624 can occur, and which can even be reported as mysterious failures,
5625 when people patch the sources or change the build parameters
5626 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5627 sbcl and .core files.)
5628 * fixed bug: VALUES-LIST is no longer optimized away.
5629 * fixed bug 142: The FFI conversion of C string values to Lisp
5630 string values no longer conses excessively. (thanks to Nathan
5631 Froyd porting Raymond Toy's fix to CMU CL)
5632 * began to systematize and improve MOP conformance in PCL (thanks to
5633 Nathan Froyd, Gerd Moellman and Pierre Mai):
5634 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5636 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5637 ** FINALIZE-INHERITANCE is now called on class finalization;
5638 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5639 argument precedence order.
5640 * fixed bug 202: The compiler no longer fails on functions whose
5641 derived types contradict their declared type.
5642 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5643 so it can be non-toplevel.
5644 * The fasl file version number has changed (because of the new
5645 implementation of DEFMACRO).
5646 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5647 safe code, that any length requirement by their type-specifier
5648 argument is valid. The exceptions to this are described in bug
5650 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5651 functions now check the types of their inputs as required by ANSI.
5652 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5653 introduced symbol is DECLAREd to be SPECIAL.
5654 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5655 * fixed bug: :COUNT argument to sequence functions may be negative
5656 * fixed bug: body of DO-SYMBOLS may contain declarations
5657 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5658 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5659 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5660 symbol macro only once
5661 * fixed printing of call frame when argument list is unavailable
5662 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5663 * compiler no longer signals WARNING on unknown keyword
5666 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5667 * A beta-quality port to the mips architecture running Linux,
5668 based on the old CMUCL backend, has been made. It has been tested
5669 on a big-endian kernel, and works sufficiently well to be able to
5670 rebuild itself; it has not been tested in little-endian mode.
5671 * fixed an inconsistency between gencgc.c and purify.c which made
5672 dumping/loading .core files unreliable
5673 * fixed bug 120a: The compiler now deals correctly with IFs where
5674 the consequent is the same as the alternative, instead of
5675 misderiving the return type. (thanks to Alexey Dejneka)
5676 * fixed bug 113: Logical pathnames are now dumpable (the logical
5677 host is resolved at load-time, throwing an error if it is not
5679 * fixed bug 174: FORMAT's error message is slightly clearer when a
5680 non-printing character is used in a format directive.
5681 * fixed several bugs in compiler checking of type declarations, i.e.
5682 violations of the Python "declarations are assertions" principle
5683 (thanks to Alexey Dejneka)
5684 * fixed several bugs in PCL's error checking (thanks to Gerd
5686 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5688 * fixed bug in compilation of functions as first class values
5689 (thanks to Antonio Martinez-Shotton)
5690 * The compiler's handling TYPE-ERRORs which it can prove will
5691 inevitably happen at runtime has been cleaned up and corrected
5692 in several ways. (thanks to Alexey Dejneka)
5693 * improved argument type checking for various basic arithmetic
5694 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5695 lavished on them in the past that they can be compiled in many
5696 ways in different special cases
5697 * fixed bug 181: compiler checks validity of user supplied type
5699 * cleaned up code flushing in optimization: Function calls which
5700 should signal errors for safety purposes (e.g. which ANSI says
5701 should signal errors when their arguments are of incorrect type)
5702 are no longer optimized away.
5703 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5704 * incremented fasl file version number, because changes in the
5705 implementation of sequence functions like COERCE caused
5706 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5707 in old inline expansions) to become undefined. (Actually these
5708 changes were later undone, so we might very well be binary
5709 compatible with 0.7.7 after all, but leaving the version number
5710 incremented seemed like the simplest and most conservative
5713 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5714 * An alpha-quality port to the parisc architecture running Linux,
5715 based on the old CMUCL backend, has been made. This, even more so
5716 than the other backends, should be considered still a work in
5717 progress; known problems include that the Linux kernel in 64-bit
5718 mode does not propagate the correct sigcontext structure to
5719 userspace, and consequently SBCL on a parisc64 kernel will not
5721 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5722 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5723 suppressed.) Also now that the compiler is looking at declarations
5724 in the environment, it checks optimization declarations as well,
5725 and suppresses inlining when (> DEBUG SPEED).
5726 * More fixes have been made to treatment of floating point exception
5727 treatment and other Unix signals. In particular, floating point
5728 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5729 * The detection and handling of control stack exhaustion (infinite
5730 or very deeply nested recursion) has changed. Stack exhaustion
5731 detection is now done by write-protecting pages at the OS level
5732 and applies at all optimization settings; when found, a
5733 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5734 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5735 be caught using IGNORE-ERRORS.
5736 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5737 correctly when transforming recursive LABELS functions to LETs.
5738 (thanks to Alexey Dejneka)
5739 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5740 that are names of constants or global variables.
5741 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5742 alien routines with docstrings.
5743 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5744 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5746 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5747 (thanks to Eric Marsden)
5748 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5749 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5750 * Bug fix: The SPARC backend can now compile functions involving
5751 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5752 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5753 to a functions expecting a PATHNAME-DESIGNATOR.
5754 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5755 lambda lists. (thanks to Alexey Dejneka)
5756 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5757 functions so that EXPORTing the name of the class doesn't cause
5758 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5759 to Antonio Martinez for reporting this)
5760 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5761 constant-folded without failing an assertion. (thanks to Einar
5762 Floystad Dorum for reporting this)
5763 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5764 types are now dealt with more correctly by the compiler.
5765 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5766 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5767 behaviour analogous to RENAME-FILE. This puts its behaviour more
5768 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5770 * The fasl file version number has changed again. (because of the
5771 bug fix involving the names of PCL MAKE-INSTANCE functions)
5773 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5774 * bug fix: Floating point exceptions are treated much more
5775 consistently on the x86/Linux and PPC/Linux platforms.
5776 * Array initialization with :INITIAL-ELEMENT is now much faster for
5777 cases when the compiler cannot open code the array creation, but
5778 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5779 array accesses have also seen a speed increase.
5780 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5781 specified. (This was at the root of some bad interactions between
5782 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5784 * bug fix: Internal error arguments for undefined functions are now
5785 computed correctly on the PPC/Linux platform.
5786 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5787 Raymond Toy's patch for CMU CL)
5788 * Support for the Solaris 9 operating environment has been included
5789 (thanks to Daniel Merritt)
5790 * A very ugly but hopefully complete draft of the missing FFI chapter
5791 of the manual has been created by reformatting the corresponding
5792 CMU CL manual chapter into (currently very ugly and incoherent)
5793 DocBook and bringing it up to date for SBCL behavior. Thus, the
5794 manual is now essentially complete, at least by my extreme
5795 once-and-only-once standards, whereby it's acceptable to refer to
5796 the doc strings of SB-EXT functions as the primary documentation.
5797 * The fasl file version number has changed again, due to cleanup of
5798 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5799 is no longer a static symbol.)
5801 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5802 * SBCL now builds with OpenMCL (version 0.12) as the
5803 cross-compilation host; also, more progress has been made toward
5804 bootstrapping under CLISP.
5805 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5807 * bug 158 fixed: The compiler can now deal with integer loop
5808 increments different from 1; fixing this turned out also to fix
5810 * bug 169 fixed: no more bogus warnings about using lexical bindings
5811 despite the presence of perfectly good SPECIAL declarations (thanks
5812 to David Lichteblau)
5813 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5814 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5815 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5817 * bug 180 fixed: Method combination specifications no longer ignore
5818 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5819 * bug fix: Structure type predicate functions now check their argument
5820 count as they should.
5821 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5822 correctly. (thanks to Pierre Mai)
5823 * minor incompatible change: The --noprogrammer option is deprecated
5824 in favor of the new --disable-debugger option, which is very similar.
5825 (The major difference is that it takes effect at a slightly different
5826 time at startup, causing handling of errors in --sysinit and
5827 --userinit files will be affected differently.) The
5828 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5829 been added to allow this functionality to be controlled from ordinary
5830 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5831 maintainers, who might want to run non-interactive scripts to
5832 build SBCL cores which will later be used interactively.)
5833 * minor incompatible change: The LOAD function no longer, when given
5834 a wild pathname to load, loads all files matching that pathname.
5835 Instead, an error of type FILE-ERROR is signalled.
5837 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5838 * bug 147 fixed: The compiler preserves its block link/count
5839 invariants more correctly now so that it doesn't crash. (thanks
5841 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5843 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5844 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5845 no-value-for-this-character as NIL (as specified by ANSI).
5846 * HOST-NAMESTRING on physical pathnames now returns a string that is
5847 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5848 (thanks to Christophe Rhodes)
5849 * The Alpha port handles icache flushing more correctly. (thanks to
5851 * More progress has been made toward bootstrapping under CLISP. (thanks
5852 to Christophe Rhodes)
5853 * The fasl file format has changed again, because dynamic loading
5854 on OpenBSD (which has non-ELF object files) motivated some cleanups
5855 in the way that foreign symbols are transformed and passed around.
5856 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5857 is no longer treated as whitespace by the reader, but instead as
5858 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5859 |A
\7fB|, instead of A as it used to.
5861 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5862 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5863 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5864 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5865 this as of 0.7.1.45, but was left out of the previous news section
5866 (thanks to Dan Barlow)
5867 * SBCL now runs on the Solaris operating system on SPARC architectures
5868 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5869 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5870 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5871 * SPARC backend cleanups, allowing builds of cores optimized for V8
5872 and V9 SPARCS, and also emission of code targeted to a particular
5873 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5875 * SBCL is closer to bootstrapping under CLISP, thanks to various
5876 fixes by Christophe Rhodes.
5877 * The fasl file format has changed again, to allow the compiler's
5878 INFO database to support symbol macros.
5879 * The user manual (in doc/) is formatted into HTML more nicely.
5880 (thanks to coreythomas)
5881 * The system is smarter about SUBTYPEP relationships, especially
5882 those involving NOT types (including types such as ATOM which are
5883 represented internally using NOT types). Thus SUBTYPEP is less
5884 likely to return (VALUES NIL NIL) in general, and in particular
5885 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5887 * The fasl file format has changed again, because the internal
5888 representation of types now includes a new slot to support the new
5889 SUBTYPEP-of-NOT-types logic.
5890 * (not a change in the main branch of SBCL, but a related prototype
5891 which can hopefully be merged into the main branch of SBCL in the
5892 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5893 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5894 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5895 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5896 dispatch macro character combinations. (thanks to Alexey Dejneka)
5897 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5898 that superficially look like logical namestrings correctly.
5899 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5901 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5902 default supplied-p) for &optional and &key arguments. (thanks to
5905 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5906 * incompatible change: The compiler is now less aggressive about
5907 tail call optimization, doing it only when (> SPACE DEBUG) or
5908 (> SPEED DEBUG). (This is an incompatible change because there are
5909 programs which relied on the old CMU-CL-style behavior to optimize
5910 away their unbounded recursion which will now die of stack overflow.)
5911 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5912 for non-GENCGC systems has been increased to 20M (since that
5913 seems much closer to the likely performance optimum for modern
5914 systems than the old 4M value was)
5915 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5916 and *DEBUG-PRINT-LEVEL*
5917 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5918 of CMU CL's support for SPARC, and various endianness and other
5919 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5920 * new syntactic sugar for the Unix command line: --load foo.bar is now
5921 an alternate notation for --eval '(load "foo.bar")'.
5923 ** The system now detects stack overflow and handles it gracefully,
5924 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5925 optimization settings. (This is a good thing in general, and
5926 its introduction in this version should be particularly timely
5927 for anyone whose code fails because of suppression of tail
5929 ** The system now hunts for the C variable "environ" in a more
5930 devious way, to avoid segfaults when the C library version differs
5931 between compile time and run time. (thanks to Christophe Rhodes)
5932 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5933 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5934 ** The compiler no longer issues bogus style warnings for undefined
5935 classes in the same source file as the DEFCLASSes which defined
5936 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5938 ** fixes in CONDITION class precedence list for undefined function
5939 errors (thanks to Alexei Dejneka)
5940 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5941 correctly. (thanks to Dan Barlow)
5942 ** portability fixes aiming at bootstrapping under CLISP (thanks
5943 to Dave McDonald and Christophe Rhodes)
5944 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5945 ** fixes in type translation and and type inference (thanks to
5947 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5948 ** various fixes in the new ports (thanks to Dan Barlow)
5949 * several changes related to debugging:
5950 ** suppression of tail recursion, as noted above
5951 ** stack overflow detection, as noted above
5952 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5953 is now the default. (For some time encapsulation has been more
5954 reliable than the breakpoint-based :ENCAPSULATE NIL
5955 implementation, at least on X86 systems; and I just noticed that
5956 encapsulation also seems closer to the spirit of the ANSI
5959 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5961 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5962 up properly again. (There was a packaging bug in 0.7.0 which
5963 left their definitions in SB-SYS::LOAD-FOREIGN and
5964 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5965 vital for most things which interface to C-level interfaces,
5966 like extensions working with sockets or databases or
5967 Perl-compatible regexes or whatever, and the need to fix
5968 this bug is the main reason that 0.7.1 was released so
5970 ** DEFGENERIC is now choosier about the methods it redefines, so that
5971 reLOADing a previously-LOADed file containing DEFGENERICs does
5972 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5973 cycle now works as it should. (thanks to Alexey Dejneka)
5974 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5975 fixed by Christophe Rhodes. (He actually submitted this patch
5976 months ago, and I delayed until after 0.7.0.)
5977 ** Bug 111 (internal compiler confusion about runtime checks on
5978 FUNCTION types) was fixed by Alexey Dejneka.
5979 * Some internal cleanups (getting rid of variables which aren't
5980 needed now that the byte interpreter is gone) caused the fasl
5981 file format number to change again.
5983 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5984 * major incompatible change: The default fasl file extension, i.e. the
5985 default extension for files produced by COMPILE-FILE, has changed
5986 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5988 ** There are many changes in the implementation of the compiler.
5989 SBCL is now essentially a compiler-only implementation of ANSI
5990 Common Lisp. EVAL still "interprets" a few special cases, but
5991 almost all the interesting cases are handled by creating
5992 a LAMBDA expression, calling COMPILE on it, then calling
5993 FUNCALL on the result.
5994 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5995 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5996 Since the code is newer, there might still be some new bugs
5997 (though not as many as before Martin Atzmueller's fixes:-). But
5998 the new code is substantially simpler and clearer, and hopefully
5999 any remaining bugs will be simpler, less fundamental, and more
6000 fixable then the bugs in the old code.
6001 ** The revised compiler is still a little unsteady on its feet.
6003 *** The debugging information it produces (particularly the names
6004 of FUNCTION objects) is sometimes much less useful than what
6005 the old compiler produced.
6006 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6007 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6008 within a MACROLET) has been temporarily weakened.
6009 ** There are new compiler optimizations for various functions:
6010 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6011 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6012 *** the math functions TRUNCATE, FLOOR, and CEILING
6013 *** the function-of-all-trades COERCE
6014 Mostly these should be transparent, but there's one
6015 potentially-annoying problem (bug 117): when the compiler
6016 inline-expands a function and does type analysis on the result,
6017 it can create control paths which have type mismatches, and
6018 when it can't prove that those control paths aren't taken,
6019 it will issue WARNINGs about the type mismatches. This is
6020 a particular problem in practice for the new sequence functions.
6021 It's not clear how this should be fixed, and for now, a
6022 workaround is given in the entry for 117 in the BUGS file.
6023 ** (Because of the interaction between the two previous items --
6024 occasional inlining problems and new inline expansions -- some
6025 of the new sequence function optimizations won't really kick in
6026 completely until debugging information, and then inlining, are
6027 straightened out in some future version.)
6028 * minor incompatible changes:
6029 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6030 DIRECTORY no longer implicitly promotes NIL slots of its
6031 pathname argument to :WILD. In particular, when you ask for the
6032 contents of a directory (which you used to be able to do without
6033 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6034 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6035 ** changes in behavior that ANSI explicitly defines to be
6036 implementation dependent:
6037 *** The new compiler-only implementation still conforms with ANSI,
6038 but acts a little different than before. Besides the obvious
6039 changes in performance tradeoffs (that the cost per form passed
6040 to EVAL has gone up, and the cost per form executed by EVAL
6041 has gone down), the behavior of the system changes a little
6042 because there are no longer any interpreted function objects.
6043 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6044 e.g. doing COMPILE on the output of interactive DEFUN is
6046 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6048 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6049 has changed from (:CL) to NIL.
6050 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6051 e.g. #\Newline and #\Tab, don't have names specified in the
6052 ANSI Common Lisp standard, is now based on their ASCII symbolic
6053 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6054 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6055 are no longer used for output.
6056 ** changes in internal implementation constants:
6057 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6058 4 million. (If your application spends a lot of time GCing and
6059 you have a lot of RAM, you might want to experiment with
6060 increasing it even more.)
6061 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6062 However, almost all old code should still continue to work without
6063 immediate update, as SB-C-CALL is now a (deprecated) nickname
6065 ** Old operator names in the style DEF-FOO are now deprecated in
6066 favor of new corresponding names DEFINE-FOO, for consistency with
6067 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6068 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6069 internal symbols, but a few supported extensions like
6070 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6071 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6072 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6073 etc. as you get deeper into recursive calls to the debugger
6074 command loop, instead of the old "5]", "5]]", "5]]]"
6075 sequence. (I was motivated to do this when squabbles between
6076 ILISP and SBCL left me very deeply nested in the debugger. In the
6077 short term, this change will probably provoke more ILISP/SBCL
6078 squabbles, but hopefully it will be an improvement in the long run.)
6079 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6080 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6081 function, since declaiming return types involving aliens is
6082 (1) annoyingly messy to do by hand and (2) vital to efficient
6083 compilation of code which calls such functions.
6084 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6085 longer reexported by the SB-EXT package. They're solely useful
6086 for alien code, so it seems more logical that you should get
6087 them from the SB-ALIEN package, not in SB-EXT.
6088 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6089 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6090 features. Instead, the code that they used to control is always
6091 built into the system.
6092 * many other bug fixes
6093 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6094 advantage of the new EVAL-WHEN stuff and to clean them up in
6095 general, and they are now more ANSI-compliant in a number of
6096 ways. Martin Atzmueller is responsible for a lot of this.
6097 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6099 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6100 *** correct ERROR type for various file operations
6101 *** some fixes for Lisp streams
6102 *** DEFMETHOD syntax checking
6103 *** changing old weird representation of debug information as
6104 strings (which, among their other deficiencies, don't transform
6105 correctly when you rename packages, and don't change their
6106 print representation when you change things like *PACKAGE*
6107 and *PRINT-LENGTH*) to symbols and lists of symbols
6108 He also made several improvements and fixed several bugs in DESCRIBE.
6109 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6111 *** misbehavior of WRITE-STRING/WRITE-LINE
6112 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6113 and several other LOOP problems as well
6114 *** DIRECTORY when similar filenames are present
6115 *** DEFGENERIC with :METHOD options
6116 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6117 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6118 *** argument ordering in FIND with :TEST option
6119 *** mishandled package designator argument in APROPOS-LIST
6120 *** various problems in the backquote readmacro
6121 *** a bug in APROPOS
6122 *** probably some others that I'm not describing very well here,
6123 since the CVS log documents them by reference to sbcl-devel
6124 messages, and the SourceForge archives aren't working well.:-(
6125 ** Dan Barlow improved the Alpha port (and is making progress on the
6126 PPC port, for those of you who think different).
6127 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6128 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6129 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6130 continues to work on the SPARC port (for those of you in a position
6131 to look down upon our little PC-compatible boxes from a great height).
6132 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6133 and uses that copy, rather than the current dynamic value, when
6134 it's trying to decide whether to truncate output. Thus e.g.
6135 (let ((*print-lines* 50))
6136 (pprint-logical-block (stream nil)
6138 (let ((*print-lines* 8))
6139 (print (aref possiblybigthings i) stream)))))
6140 should now truncate the logical block only at 50 lines, instead of
6141 often truncating it at 8 lines, as it did before.
6142 * The doc/cmucl/ directory, containing old CMU CL documentation
6143 from the time of the fork, is no longer part of the base system.
6144 SourceForge has shut down its anonymous FTP service, and with it
6145 my original plan for distributing the old CMU CL documentation
6146 there. For now, if you need these files you can download an old
6147 SBCL source release and extract them from it.
6148 * The fasl file version number changed again, for dozens of reasons,
6149 some of which are apparent above.
6151 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6152 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6153 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6154 patch, so that DISASSEMBLE output is much nicer.
6155 * The code in the SB-PROFILE package now seems reasonably stable.
6156 I still haven't decided what the final interface should look like
6157 (I'd like PROFILE to interact cleanly with TRACE, since both
6158 facilities use function encapsulation) but if you have a need
6159 for profiling now, you can probably use it successfully with
6160 the current CMU-CL-style interface.
6161 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6162 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6163 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6164 link now returns the dangling link itself, and for similar
6165 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6166 link itself. (In these cases the old code signalled an error and
6167 looped endlessly, respectively.) Thus, DIRECTORY now works even
6168 in the presence of dangling and cyclic symbolic links.
6169 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6170 is now a supported extension again, since the consensus on
6171 sbcl-devel was that it can be useful for ordinary development
6172 work, not just for debugging SBCL itself.
6173 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6174 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6175 that currently-defined functions might be redefined later with
6176 different return types.
6177 * Hash tables can be printed readably, as inspired by CMU CL code
6178 of Eric Marsden and SBCL code of Martin Atzmueller.
6179 * better error handling in CLOS method combination, thanks to
6180 Martin Atzmueller porting Pierre Mai's CMU CL patches
6181 * more overflow fixes for >16Mbyte I/O buffers
6182 * A bug in READ has been fixed, so that now a single Ctrl-D
6183 character suffices to cause end-of-file on character streams.
6184 In particular, now you only need one Ctrl-D at the command
6185 line (not two) to exit SBCL.
6186 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6188 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6189 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6190 does the right thing.
6191 * The implementation of some type tests, especially for CONDITION
6192 types, is now tidier and maybe faster, due to CMU CL code
6193 originally by Douglas Crosher, ported by Martin Atzmueller.
6194 * Some math functions have been fixed, and there are new
6195 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6196 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6197 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6198 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6199 likely to be built into sbcl-0.7.0.)
6200 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6201 CL, ported to SBCL by Martin Atzmueller)
6202 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6203 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6204 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6205 * There's a new slam.sh hack to shorten the edit/compile/debug
6206 cycle for low-level changes to SBCL itself, and a new
6207 :SB-AFTER-XC-CORE target feature to control the generation of
6208 the after-xc.core file needed by slam.sh.
6209 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6210 COMPILE-FILE is no longer supported, so that now every function
6211 gets an entry point, so that block compilation looks a little
6212 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6213 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6214 returns the number of bytes consed since the system started,
6215 rather than the number consed since the first time the function
6216 was called. (The new definition parallels ANSI functions like
6217 CL:GET-INTERNAL-RUN-TIME.)
6218 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6219 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6220 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6221 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6222 * Fasl file version numbers are now independent of the target CPU,
6223 since historically most system changes which required version
6224 number changes have affected all CPUs equally. Similarly,
6225 the byte fasl file version is now equal to the ordinary
6228 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6229 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6230 is no longer recognized. I apologize for this, because it was
6231 listed in SB-EXT as a supported extension, but I found that
6232 its existing behavior was poorly specified, as well as incorrectly
6233 specified, and it looked like too much of a mess to straighten it
6234 out. I have enough on my hands trying to get ANSI stuff to work..
6235 * many patches ported from CMU CL by Martin Atzmueller, with
6236 half a dozen bug fixes in pretty-printing and the debugger, and
6237 half a dozen others elsewhere
6238 * fixed bug 13: Floating point infinities are now supported again.
6239 They might still be a little bit flaky, but thanks to bug reports
6240 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6241 as flaky as they were.
6242 * The --noprogrammer command line option is now supported. (Its
6243 behavior is slightly different in detail from what the old man
6244 page claimed it would do, but it's still appropriate under the
6245 same circumstances that the man page talks about.)
6246 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6247 are now supported, and enabled by default. Thus, the compiler can
6248 handle many floating point and complex operations much less
6249 inefficiently. (Thus e.g. you can implement a complex FFT
6251 * The compiler now detects type mismatches between DECLAIM FTYPE
6252 and DEFUN better, and implements CHECK-TYPE more correctly, and
6253 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6254 thanks to patches from Martin Atzmueller.
6255 * various fixes to make the cross-compiler more portable to
6256 ANSI-conforming-but-different cross-compilation hosts (notably
6257 Lispworks for Windows, following bug reports from Arthur Lemmens)
6258 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6259 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6260 fixed thanks to Pierre Mai's CMU CL patches.
6261 * fixes to keep the system from overflowing internal counters when
6262 it tries to use i/o buffers larger than 16M bytes
6263 * fixed bug 45a: Various internal functions required to support
6264 complex special functions have been merged from CMU CL sources.
6265 (When I was first setting up SBCL, I misunderstood a compile-time
6266 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6267 * improved support for type intersection and union, fixing bug 12
6268 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6269 more obscure bugs as well
6270 * some steps toward byte-compiling non-performance-critical
6271 parts of the system, courtesy of patches from Martin Atzmueller
6272 * Christophe Rhodes has made some debian packages of sbcl at
6273 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6274 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6275 stable, but are nonetheless usable. When he's ready, I'd be happy
6276 to add them to the SourceForge "File Releases" section. (And if
6277 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6278 * new fasl file format version number (because of changes in
6279 internal representation of (OR ..) types to accommodate the new
6280 support for (AND ..) types, among other things)
6282 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6283 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6285 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6287 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6288 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6289 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6290 * DESCRIBE now works on structure objects again.
6291 * Most function call argument type mismatches are now handled as
6292 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6293 know whether the function will be redefined before the call is
6294 executed. (The compiler could flag local calls with full WARNINGs,
6295 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6296 it doesn't keep track of enough information to know whether calls
6297 are local in this sense.)
6298 * Compiler output is now more verbose, with messages truncated
6299 later than before. (There should be some supported way for users
6300 to override the default verbosity, but I haven't decided how to
6301 provide it yet, so this behavior is still controlled by the internal
6302 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6303 src/compiler/ir1util.lisp.)
6304 * Fasl file format version numbers have increased again, because
6305 support for the Gray streams extension changes the layout of the
6306 system's STREAM objects.
6307 * The Gray subclassable streams extension now works, thanks to a
6308 patch from Martin Atzmueller.
6309 * The full LOAD-FOREIGN extension (not just the primitive
6310 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6311 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6312 but like most other programs, it defaults to copying the Unix
6313 environment from the original process instead of starting the
6314 new process in an empty environment.
6315 * Extensions which manipulate the Unix environment now support
6316 an :ENVIRONMENT keyword option which doesn't smash case or
6317 do other bad things. The CMU-CL-style :ENV option is retained
6318 for porting convenience.
6319 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6320 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6322 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6324 * A patch from Martin Atzmueller seems to have solved the SIGINT
6325 problem, and as far as we know, signal-handling now works cleanly.
6326 (If you find any new bugs, please report them!)
6327 * The system no longer defaults Lisp source file names to types
6328 ".l", ".cl", or ".lsp", but only to ".lisp".
6329 * The compiler no longer uses special default file extensions for
6330 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6331 seems to expect a single default extension for all compiled code,
6332 and there's no compelling reason to try to stretch the standard
6333 to allow two different extensions.) Instead, byte-compiled files
6334 default to the same extension as native-compiled files.
6335 * Fasl file format version numbers have increased again, because
6336 a rearrangement of internal implementation packages made some
6337 dumped symbols in old fasl files unreadable in new cores.
6338 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6339 many fewer weird special cases.
6340 * Bug #17 (differing COMPILE-FILE behavior between logical and
6341 physical pathnames) has been fixed, and some related misbehavior too,
6342 thanks to a patch from Martin Atzmueller.
6343 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6344 by Tim Moore, ported to SBCL by Martin Atzmueller.
6345 * Martin Atzmueller fixed several filesystem-related problems,
6346 including bug #36, in part by porting CMU CL patches, which were
6347 written in part by Paul Werkowski.
6348 * More compiler warnings in src/runtime/ are gone, thanks to
6349 more patches from Martin Atzmueller.
6350 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6353 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6355 * DESCRIBE now works on CONDITION objects.
6356 * The debugger now handles errors which arise when trying to print
6357 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6359 * The build system now uses an additional file, customize-target-features.lisp,
6360 to allow local modifications to the target *FEATURES* list. (The point of
6361 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6362 debugging features enabled, without having to worry about propagating it
6363 into everyone's system when I do a "cvs update".) When no
6364 customize-target-features.lisp file exists, the target *FEATURES* list
6365 should be constructed the same way as before.
6366 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6367 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6368 warn about behavior which is undefined under the ANSI spec. Note: This
6369 is specified by ANSI, but it's not very popular with programmers.
6370 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6371 macro in the SBCL sources for an example of a workaround which you
6372 might use to make portable ANSI-standard code which does what you want.
6373 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6374 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6375 when it's used as a non-toplevel form. (This is required in order
6376 to implement the DEFCONSTANT-EQX macro.)
6377 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6378 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6379 funny things, due to bugs in the implementation of EVAL-WHEN
6380 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6381 non-toplevel DEFCONSTANTs are uncommon.)
6382 * The core file version number and fasl file version number have been
6383 incremented, because the old noncompliant DEFCONSTANT behavior involved
6384 calling functions which no longer exist, and because I also took the
6385 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6386 * fixed bug 1 (error handling before read-eval-print loop starts), and
6387 redid debugger restarts and related debugger commands somewhat while
6389 ** The QUIT debugger command is gone, since it did something
6390 rather different than the SB-EXT:QUIT command, and since it never
6391 worked properly outside the main toplevel read/eval/print loop.
6392 Invoking the new TOPLEVEL restart provides the same functionality.
6393 ** The GO debugger command is also gone, since you can just invoke
6394 the CONTINUE restart directly instead.
6395 ** The TOP debugger command is also gone, since it's redundant with the
6396 FRAME 0 command, and since it interfered with abbreviations for the
6398 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6400 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6401 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6402 some porting work by Martin Atzmueller)
6403 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6404 with a boatload of patches which he ported to SBCL. Now that those
6406 ** The system tries to make sure that its low-priority messages
6407 are prefixed by semicolons, to help people who like to use
6408 syntax highlighting in their ILISP buffer. (This patch
6409 was originally due to Raymond Toy.)
6410 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6411 patches originally written by Raymond Toy.
6412 ** The compiler understands coercion between single-value and
6413 multiple-VALUES type expressions better, getting rid of some very
6414 weird behavior, thanks to patches originally by Robert MacLachlan
6415 and Douglas Crosher.
6416 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6417 lambda lists, thanks to a patch originally by Pierre Mai.
6418 ** The system no longer bogusly warns about "abbreviated type
6420 ** The compiler gets less confused by inlining and RETURN-FROM,
6421 thanks to some patches originally by Tim Moore.
6422 ** The system no longer hangs when dumping circular lists to fasl
6423 files, thanks to a patch originally from Douglas Crosher.
6424 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6425 undefined function error.
6426 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6427 in structure slot initforms) for now, documented workaround instead:-|
6428 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6429 * fixed bug 5: added stubs for various Gray stream functions called
6430 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6431 installed, at least appropriate type errors are generated
6432 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6433 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6434 consistently in DEFMETHOD forms.
6435 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6436 it doesn't seem to affect SBCL after all
6437 * The C runtime system now builds with better optimization and many
6438 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6440 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6442 * The system is now under CVS at SourceForge (instead of the
6443 CVS repository on my home machine).
6444 * The new signal handling code has been tweaked to treat register
6445 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6446 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6447 downstream, e.g. in debug-int.lisp, has implicit dependencies
6448 on the unsignedness of integer representation of machine words,
6449 and that caused the system to bomb out with infinite regress
6450 when trying to recover from type errors involving signed values,
6451 e.g. (BUTLAST '(1 2 3) -1).)
6452 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6453 (This was one of the bugs Peter Van Eynde reported back in July.)
6454 * The system now uses code inspired by Colin Walters' O(N)
6455 implementation of MAP (from the cmucl-imp@cons.org mailing
6456 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6457 inline the MAP operation, and there is more than one
6458 sequence argument to the MAP call (so that it can't just
6459 do ETYPECASE once and for all based on the type of the
6460 single sequence argument). (The old non-inline implementation
6461 of the general M-argument sequence-of-length-N case required
6462 O(M*N*N) time when any of the sequence arguments were LISTs.)
6463 * The QUIT :UNIX-CODE keyword argument has been renamed to
6464 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6465 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6467 * Raymond Wiker's patches to port dynamic loading from Linux to
6468 FreeBSD have been added.
6469 * The BUGS file is now more nearly up to date, thanks in large part
6470 to Martin Atzmueller's review of it.
6471 * The debugger now flushes standard output streams before it begins
6472 its output ("debugger invoked" and so forth).
6473 * The core version number and fasl file version number have both
6474 been incremented, because of incompatible changes in the layout
6476 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6477 used to not be called for a saved Lisp image.)
6478 * Martin Atzmueller's version of a patch to fix a compiler crash,
6479 as posted on sbcl-devel 13 September 2000, has been installed.
6480 * Instead of installing Martin Atzmueller's patch for the
6481 compiler transform for SUBSEQ, I deleted the compiler transform,
6482 and transforms for some similar consing operations.
6483 * A bug in signal handling which kept TRACE from working on OpenBSD
6485 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6486 away by constant folding
6487 * The system now defines its address space constants in one place
6488 (in the Lisp sources), and propagates them automatically elsewhere
6489 (through GENESIS and the sbcl.h file). Therefore, patching the
6490 address map is less unnecessarily tedious and error-prone. The
6491 Lisp names of address space constants have also been systematized.
6492 * CVS tags like dollar-Header-dollar have been removed from
6493 the sources, because they have never saved me trouble and
6494 they've been source of trouble working with patches and other
6495 diff-related operations.
6496 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6497 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6499 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6501 * The system has been ported to OpenBSD.
6502 * The system now compiles with a simple "sh make.sh" on the systems
6503 that it's supported on. I.e., now you no longer need to tweak
6504 text in the target-features.lisp-expr and symlinks in src/runtime/
6505 by hand, the make.sh takes care of it for you.
6506 * The system is no longer so grossly inefficient when compiling code
6507 involving vectors implemented as general (not simple) vectors (VECTOR T),
6508 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6509 which dares to use the various sequence functions on non-simple
6510 vectors, takes less of a performance hit.
6511 * There is now a primitive type predicate VECTOR-T-P
6512 to test for the (VECTOR T) type, so that e.g.
6513 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6514 can now be compiled with some semblance of efficiency. (The old code
6515 turned the type declaration into a full call to %TYPEP at runtime!)
6516 * AREF on (VECTOR T) is still not fast, since it's still compiled
6517 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6518 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6519 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6520 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6521 without making full calls to SUBTYPEP at runtime.
6522 (Some analogous efficiency issues for non-simple vectors specialized to
6523 element types other than T, or for non-simple multidimensional arrays,
6524 have not been addressed. They could almost certainly be handled the
6525 same way if anyone is motivated to do so.)
6526 * The changes in array handling break binary compatibility, so
6527 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6528 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6529 instead of (VALUES T T).
6530 * By following the instructions that Dan Barlow posted to sbcl-devel
6531 on 2 July 2000, I was able to enable primitive dynamic object
6532 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6533 functionality is not implemented (since it calls ld to resolve
6534 library references automatically, requiring RUN-PROGRAM for its
6535 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6536 try to resolve library references) is now supported.
6537 * The system now flushes the standard output streams when it terminates,
6538 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6539 them at several other probably-convenient times, e.g. in each pass of
6540 the toplevel read-eval-print loop, and after evaluating a form given
6541 as an "--eval" command-line option. (These changes were motivated by a
6542 discussion of stream flushing issues on cmucl-imp in August 2000.)
6543 * The source transform for TYPEP of array types no longer assumes
6544 that an array whose element type is a not-yet-defined type
6545 is implemented as an array of T, but instead punts, so that the
6546 type will be interpreted at runtime.
6547 * There is now some support for cross-compiling in make.sh: each of
6548 the phases of make.sh has its own script. (This should be transparent
6549 to people doing ordinary, non-cross-compile builds.)
6550 * Since my laptop doesn't have hundreds of megabytes of memory like
6551 my desktop machine, I became more motivated to do some items on
6552 my to-do list in order to reduce the size of the system a little:
6553 ** Arrange for various needed-only-at-cold-init things to be
6554 uninterned after cold init. To support this, those things have
6555 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6556 symbols with such names are now uninterned after cold init).
6557 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6558 fasl files for cold load.
6559 ** Remove the old compiler structure pooling code (which used to
6560 be conditional on the target feature :SB-ALLOC) completely.
6561 ** Redo the representation of some data in cold init to be more compact.
6562 (I also looked into supporting byte compiled code at bootstrap time,
6563 which would probably reduce the size of the system a lot, but that
6564 looked too complicated, so I punted for now.)
6565 * The maximum signal nesting depth in the src/runtime/ support code has
6566 been reduced from 4096 to 256. (I don't know any reason for the very
6567 large old value. If the new smaller value turns out to break something,
6568 I'll probably just bump it back up.)
6569 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6571 * Many, many bugs reported by Peter Van Eynde have been added to
6572 the BUGS list; some have even been fixed.
6573 * While enabling dynamic object file loading, I tried to make the
6574 code easier to understand, renaming various functions and variables
6575 with less ambiguous names, and changing some function calling
6576 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6577 * While trying to figure out how to do the OpenBSD port, I tried to
6578 clean up some of the code in src/runtime/. In particular, I dropped
6579 support for non-POSIX signal handling, added various comments,
6580 tweaked the code to reduce the number of compilation warnings, and
6581 renamed some files to increase consistency.
6582 * To support the new automatic configuration functionality in make.sh,
6583 the source file target-features.lisp-expr has been replaced with the
6584 source file base-target-features.lisp-expr and the machine-generated
6585 file local-target-features.lisp-expr.
6586 * fixed a stupid quoting error in make.sh so that using CMU CL
6587 "lisp -batch" as cross-compilation host works again
6589 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6591 * DESCRIBE no longer tries to call itself recursively to describe
6592 bound/fbound values, so that it no longer fails on symbols which are
6593 bound to themselves (like keywords, T, and NIL).
6594 * DESCRIBE now works on generic functions.
6595 * The printer now prints less-screwed-up representations of closures
6596 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6597 * A private symbol is used instead of the :EMPTY keyword previously
6598 used to mark empty slots in hash tables. Thus
6599 (DEFVAR *HT* (MAKE-HASH-TABLE))
6600 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6601 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6602 now does what ANSI says that it should. (You can still get
6603 similar noncompliant behavior if bang on the hash table
6604 implementation with all the symbols you get back from
6605 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6606 This breaks binary compatibility, since tests for equality to
6607 :EMPTY are wired into things like the macroexpansion of
6608 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6610 * There's now a minimal placeholder implementation for CL:STEP,
6611 as required by ANSI.
6612 * An obscure bug in the interaction of the normal compiler, the byte
6613 compiler, inlining, and structure predicates has been patched
6614 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6615 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6617 * Missing ordinary arguments in a macro call are now detected even
6618 when the macro lambda list contains &KEY or &REST.
6619 * The debugger no longer complains about encountering the top of the
6620 stack when you type "FRAME 0" to explicitly instruct it to go to
6621 the top of the stack. And it now prints the frame you request even
6622 if it's the current frame (instead of saying "You are here.").
6623 * As specified by ANSI, the system now always prints keywords
6624 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6626 * The default initial SIZE of HASH-TABLEs is now smaller.
6627 * Type information from CLOS class dispatch is now propagated
6628 into DEFMETHOD bodies, so that e.g.
6629 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6631 is now basically equivalent to
6632 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6633 (DECLARE (TYPE SINGLE-FLOAT X))
6635 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6636 operation, without having to do run-time type dispatch.
6637 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6638 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6639 * Since I don't seem to be making big file reorganizations very often
6640 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6641 is overflowing my ability to conveniently back them up), I've finally
6642 checked the system into CVS. (The CVS repository is on my home system,
6643 not at SourceForge -- putting it on SourceForge might come later.)
6644 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6645 high-level GC-NOTIFY-FOO functions send their output. (There's
6646 still very little control of where low-level verbose GC functions
6647 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6648 less than it used to -- the GC-NOTIFY-FOO functions are now under
6649 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6650 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6651 in only one place in the source code, and propagates it automatically
6652 everywhere that it's needed. Thus e.g. when I bump the version from
6653 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6654 * The C source files now include boilerplate legalese and documentation
6655 at the head of each file (just as the Lisp source files already did).
6656 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6657 to his page will be replaced with a link to his new CLiki service.
6659 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6661 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6662 * The build process now looks for GNU make under the default name "gmake",
6663 instead of "make" as it used to. If GNU make is not available as "gmake"
6664 on your system, you can change this default behavior by setting the
6665 GNUMAKE environment variable.
6666 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6667 can build without error under CMU CL.
6669 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6671 * There is now a partial SBCL user manual (with some new text and some
6672 text cribbed from the CMU CL manual).
6673 * The beginnings of a profiler have been added (starting with the
6674 CMU CL profiler and simplifying and cleaning up). Eventually the
6675 main interface should be through the TRACE macro, but for now,
6676 it's still accessed through vaguely CMU-CL-style functions and macros
6677 exported from the package SB-PROFILE.
6678 * Some problems left over from porting CMU CL to the new
6679 cross-compilation bootstrap process have been cleaned up:
6680 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6681 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6682 part when getting rid of the compiler *BACKEND* stuff.)
6683 ** The value of *NULL-TYPE* was screwed up, because it was
6684 being initialized before the type system knew the final
6685 definition of the 'NULL type. This screwed up several key
6686 optimizations in the compiler, causing inefficiency in all sorts
6687 of places. (I found it because I wanted to understand why
6688 GET-INTERNAL-RUN-TIME was consing.)
6689 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6690 PROCLAIM FTYPE information. Unfortunately this broke binary
6691 compatibility again, since now the forms output by DEFGENERIC
6692 to refer to functions which didn't exist in 0.6.3.
6693 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6694 can use the new (as of 0.6.3) transform for SOME into MAP into
6696 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6697 values to (INTEGER 0 1000000), so that the time code will no longer
6698 occasionally get blown up by Linux returning 1000000 microseconds
6699 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6700 its output conform to the ANSI spec. (Alas, this makes its output
6701 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6702 * A full call to MAP NIL with a single sequence argument no longer conses.
6703 * fixes to problems pointed out by Martin Atzmueller:
6704 * The manual page no longer talks about multiprocessing as though
6705 it were currently supported.
6706 * The ILISP support patches have been removed from the distribution,
6707 because as of version 5.10.1, ILISP now supports SBCL without us
6708 having to maintain patches.
6709 * added a modified version of Raymond Toy's recent CMU CL patch for
6710 EQUALP comparison of HASH-TABLE
6712 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6714 * The system still can't cross-compile itself with
6715 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6716 entails), but at least it can compile more of itself that way
6717 than it used to be able to, and various buglets which were uncovered
6718 by trying to cross-compile itself that way have now been fixed.
6719 * This release breaks binary compatibility again. This time
6720 at least I've incremented the FASL file format version to 2, so that the
6721 problem can be detected reliably instead of just causing weird errors.
6722 * various new style warnings:
6723 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6724 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6725 ** using the lexical binding of a variable named in the *FOO* style
6726 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6727 as specified by ANSI.
6728 * *RANDOM-STATE* is no longer automatically initialized from
6729 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6730 default behavior of the system is to repeat its behavior every time
6731 it's run. If you'd like to change this behavior, you can always
6732 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6733 old convention there was no comparably easy way to get the system to
6734 repeat its behavior every time it was run.
6735 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6736 FTYPE declarations has been removed, in favor of their ANSI
6737 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6738 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6739 the types of their sequence arguments can be determined at compile time.
6740 This is done through a new open code expansion for MAP which eliminates
6741 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6742 argument types can be determined at compile time.
6743 * The optimizer now transforms COERCE into an identity operation when it
6744 can prove that the coerced object is already of the correct type. (This
6745 can be a win for machine generated code, including the output of other
6746 optimization transforms, such as the MAP transform above.)
6747 * Credit information has been moved from source file headers into CREDITS.
6748 * Source file headers have been made more standard.
6749 * The CASE macro now compiles without complaining even when it has
6752 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6754 * (Note that the way that the PCL macroexpansions were rewritten
6755 to accommodate the change in DEFGENERIC below breaks binary
6756 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6757 not run under sbcl-0.6.2. Once we get out of alpha releases,
6758 i.e. hit release 1.0.0, we'll probably try to maintain binary
6759 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6760 and sbcl-1.4.4. Until then, however, it might be fairly common
6761 for maintenance releases to break binary compatibility.)
6762 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6764 * The reporting of unhandled signals has been changed to print some
6765 explanatory text as well as the report form. (Previously only
6766 the report form was printed.)
6767 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6768 it defines, so that the compiler no longer issues undefined function
6769 warnings for compiled-but-not-yet-loaded generic functions.
6770 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6771 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6772 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6773 section of the ANSI spec are supported.
6774 * The "" nickname for the "KEYWORD" package has been removed.
6775 The reader still handles symbol tokens which begin with a package marker
6776 as keywords, but it doesn't expose its mechanism for doing so in the
6777 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6778 * The system now issues STYLE-WARNINGs for contradictory TYPE
6779 proclamations. (Warnings for contradictory FTYPE proclamations would
6780 be nice too, but those can't be done usefully unless the type system
6781 is made smarter about FUNCTION types.)
6782 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6783 systematized, so that "*target-*.lisp is supposed to exist only on the
6784 target and imply that there's a related file which exists on the
6785 host, and *host-*.lisp is supposed to exist only on the host and imply
6786 that there's a related file which exists on the target. This involves a
6787 lot of renaming. Hopefully the acute confusion caused by the renaming
6788 will be justified by the reduction in chronic confusion..
6789 ** runtime-type.lisp -> early-target-type.lisp
6790 ** target-type.lisp -> late-target-type.lisp
6791 ** early-host-format.lisp -> early-format.lisp
6792 ** late-host-format.lisp -> late-format.lisp
6793 ** host-error.lisp -> misc-error.lisp
6794 ** early-error.lisp -> early-target-error.lisp
6795 ** late-error.lisp -> late-target-error.lisp
6796 ** host-defboot.lisp -> early-defboot.lisp
6797 ** code/misc.lisp -> code/target-misc.lisp
6798 ** code/host-misc.lisp -> code/misc.lisp
6799 ** code/numbers.lisp -> code/target-numbers.lisp
6800 ** code/early-numbers.lisp -> numbers.lisp
6801 ** early-host-type.lisp -> early-type.lisp
6802 ** late-host-type.lisp -> late-type.lisp
6803 ** host-typep.lisp -> typep.lisp
6804 ** load.lisp -> target-load.lisp
6805 ** host-load.lisp -> load.lisp
6806 ** host-disassem.lisp -> disassem.lisp
6807 ** host-insts.lisp -> insts.lisp
6808 ** byte-comp.lisp -> target-byte-comp.lisp
6809 ** host-byte-comp.lisp -> byte-comp.lisp
6810 ** host-signal.lisp -> signal.lisp
6811 ** host-defstruct.lisp -> defstruct.lisp
6812 ** late-target-type.lisp -> deftypes-for-target.lisp
6813 Furthermore, several other previously target-only files foo.lisp (e.g.
6814 hash-table.lisp and random.lisp) have been split into a target-and-host
6815 foo.lisp file and a target-only target-foo.lisp file, with their key type
6816 definitions in the target-and-host part, so that the cross-compiler will
6817 know more about target types.
6818 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6819 gone away. In their place are various *BACKEND-FOO* variables
6820 corresponding to the slots of the old structure.
6821 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6822 into the target SBCL has been fixed.
6823 * The chill.lisp system for loading cold code into a running SBCL
6825 * Support for the CMU CL "scavenger hook" extension has been removed.
6826 (It was undocumented and unused in the CMU CL sources that SBCL was
6827 derived from, and stale in sbcl-0.6.1.)
6828 * Various errors in the cross-compiler type system were detected
6829 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6830 (enabling various consistency checks). Many of them were fixed,
6831 but some hard problems remain, so the compiler is back to
6832 running without *TYPE-SYSTEM-INITIALIZED* for now.
6833 * As part of the cross-compiler type system cleanup, I implemented
6834 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6835 * I have started adding UNCROSS calls throughout the type system
6836 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6837 on cross-compiler input files will be able to go away, and various
6839 * CONSTANTP now returns true for quoted forms (as explicitly required
6842 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6844 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6845 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6846 (MAKE-LIST -1). In the longer term, it ought to become true
6847 that declarations are assertions even at SAFETY 1. For now, it's not
6848 quite true even at SAFETY 3, but it's at least more nearly true..
6849 (Note that this change seems to increases the size of the system by
6850 O(5%) and to decrease the speed of the compiler by 20% or more.)
6851 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6852 for the problem of printing dozens of lines of distracting information
6853 about low-level system machinery as part of the top stack frame
6854 on entry to the debugger when an undefined function was called.
6855 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6856 is not reset to COMMON-LISP-USER.
6857 * Compilation of stuff related to dyncount.lisp has been made conditional
6858 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6859 smaller. The various dyncount-related symbols have been moved into
6860 a new "SB-DYNCOUNT" package.
6861 * tty-inspect.lisp has been renamed to inspect.lisp.
6862 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6863 feature has gone away. (When we eventually port to other flavors of
6864 libc and/or Unix, we'll try to make the differences between flavors
6865 invisible at the user level.)
6866 * Various other *FEATURES* tags, and/or their associated conditionals,
6867 have been removed if obsolescent, or given better documentation, or
6868 sometimes given more-mnemonic names.
6870 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6872 * tidied up "make.sh" script
6873 * tidied up system directory structure
6874 * better "clean.sh" behavior
6875 * added doc/FOR-CMUCL-DEVELOPERS
6876 * many many small tweaks to output format, e.g. removing possibly-confusing
6877 trailing #\. character in DESCRIBE-INSTANCE
6878 * (EQUALP #\A 'A) no longer signals an error.
6879 * new hashing code, including EQUALP hashing
6880 * tidied up Lisp initialization and toplevel
6881 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6882 * command line argument processing
6883 * added POSIX-GETENV function to deal with Unix-ish environment variables
6884 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6885 terminating SBCL on EOF
6886 * non-verbose GC by default
6887 * There is no more "sbcl" shell script; the sbcl file is now the C
6888 runtime executable (just like CMU CL).
6889 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6891 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6892 symbol and package information as Lisp native symbol and package objects
6893 instead of strings naming symbols and strings naming packages. This way,
6894 whenever packages are renamed (as in warm init), debug information is
6895 transformed along with everything else.
6896 * tweaked the optimization policy declarations which control the building
6897 of SBCL itself. Now, among other things, the system no longer saves
6898 source location debugging information. (This helps two problems at once
6899 by reducing SBCL size and by keeping SBCL from trying to look for its
6900 sources -- which may not exist -- when reporting errors.)
6901 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6902 debugging and testing purposes
6903 * cleaned up printing, making the printer call PRINT-OBJECT for
6904 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6905 methods, giving nearly-ANSI behavior
6906 * converted almost all special variables to use *FOO* naming convention
6907 * deleted PARSE-TIME functionality, since it can be done portably
6908 * moved some files out of cold init into warm init
6909 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6911 * regularized formatting of source files
6912 * added an install.sh script
6913 * fixed ridiculous memory usage of cross-compiler by making
6914 compiler/alloc.lisp not try to do pooling unless it can hook
6915 itself into the GC of the cross-compilation host. Now the system
6916 builds nicely on my old laptop.
6917 * added :SB-ALLOC in target-features.lisp-expr
6918 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6919 was not implemented)
6920 * re-did condition handling and note reporting in the compiler. Notes
6921 are no longer handled by signalling conditions. Style warnings
6922 and warnings are handled more correctly and reported in such a way
6923 that it's easy to find one or the other in your output (so that you
6924 can e.g. figure out which of many problems caused COMPILE-FILE to
6926 * changed the severity of several compiler warnings from full WARNING
6927 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6928 compiler note reporting so that it doesn't use the condition system
6929 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6930 COMPILE-FILE command)
6931 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6932 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6933 no longer supported, since their implementation was deeply intertwingled
6934 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6935 * removed bogus "support" for compiler macros named (SETF FOO), and
6936 removed the compiler macro for SETF INFO (but only after making a fool
6937 of myself on the cmucl-imp mailing list by posting a bogus patch for
6938 DEFINE-COMPILER-MACRO..)
6939 * Compiled files containing forms which have side effects on the Lisp
6940 reader (such as DEFPACKAGE forms) are now handled more correctly.
6941 (Compiler queuing of top level lambdas has been suppressed by setting
6942 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6943 * deleted various currently-unused source files, e.g. gengc.lisp. They
6944 may be added back at some point e.g. when porting to other architectures,
6945 but until they are it's distracting to distribute them and to try to
6947 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6948 there were so many of them they're just distractions, and UNCROSS is
6949 known to be able to handle the current sources
6950 * moved PROFILE functionality into TRACE, so that it will be clear
6951 how the wrapping and unwrapping of functions when you profile them
6952 interacts with the wrapping and unwrapping of functions when you
6953 trace them. (Actually, the functionality isn't there yet, but at least
6954 the interface specification is there. Hopefully, the functionality will
6955 arrive with some future maintenance release.)
6956 * removed host-oops.lisp
6957 * changed signature of QUIT function to allow UNIX-CODE argument
6958 * fixed READ-SEQUENCE bug
6959 * tweaked verbose GC output so that it looks more like the progress
6960 output that ANSI specifies for functions like LOAD
6961 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6962 * added <http://sbcl.sourceforge.com> to the banner information printed by