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 * enhancement: clean.sh now also cleans doc/internals.
6 * optimization: calls to static functions on x86-64 use less instructions.
7 * optimization: compute encode-universal-time at compile time when possible.
8 * optimization: when referencing internal functions as #'x, don't go through
9 an indirect fdefn structure.
10 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
11 * optimization: (mod fixnum) type-checks are performed using one unsigned
12 comparison, instead of two.
13 * optimization: enable more modular arithmetic transforms in the presence of
15 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
16 when the result is known to be negative.
17 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
18 * optimization: comparisons between rationals and constant floats or between
19 integers and constant ratios are now converted to rationals/integers at
21 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
22 * bug fix: problems with NCONC type derivation (reported by Jerry James).
23 * bug fix: EXPT type derivation no longer constructs bogus floating-point
24 types. (reported by Vsevolod Dyomkin)
25 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
26 addrinfo. (lp#1187041, patch by Jerry James)
27 * bug fix: uninitialized type-error conditions can now be printed.
29 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
30 listening, allowing several tests to run in parallel.
31 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
32 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
34 * bug fix: Specialised SIMD-PACK types can be negated.
35 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
36 reported by Eric Marsden)
37 * bug fix: FP return values from foreign calls are always rounded to single
38 or double float precision on x87.
39 * bug fix: Known-safe vector access on x86oids should not fail spuriously
40 when the index is of the form (+ x constant-positive-integer).
41 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
43 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
44 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
45 ROOM, plus a few SB-INTROSPECT functions) has been completely
46 rewritten; it may now exhibit different bugs than before.
47 * new feature: minimal runtime/compiler intrastructure support for SSE
48 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
49 feature :sb-simd-pack. This should enable intrinsics extensions as
50 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
51 for maintaining a branch for so long.
52 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
53 the working directory of the spawned process.
54 (lp#791800) (patch by Matthias Benkard)
55 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
56 stack-allocated on PPC.
57 * enhancement: "fixed objects" can now be stack-allocated on PPC.
58 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
59 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
60 also returns VOPs which do not translate any functions, and finds
61 defoptimizer types ir2convert and stack-allocate-result.
62 * enhancement: better type derivation for APPEND, NCONC, LIST.
64 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
65 heap in a manner similar to the GC rather than its previous ad-hoc
66 scheme, and is therefore no less and possibly more accurate.
67 * fixes and enhancements related to Unicode:
68 ** the character database information has been updated to Unicode 6.2;
69 ** support for canonical and compatibility decomposition of characters has
70 been added, along with support for primary composition;
71 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
72 NFKD) has been included;
73 ** querying the character database for code points not defined by Unicode
74 gives less wrong answers (lp#1178038, reported by Ken Harris)
75 * enhancement: print intermediate evaluation results for some ASSERTed
76 expressions. (lp#789497) (patch by Alexandra Barchunova)
77 * enhancement: x86-64 disassemblies are annotated with unboxed constant
78 values when there are references to (RIP-relative) unboxed constants.
79 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
80 of quadratically with the size of the input in the worst case.
82 * bug fix: handle errors when initializing *default-pathname-defaults*,
83 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
84 decoding errors, or directories being deleted.
85 * bug fix: Loading a core with a discontiguous dynamic space now correctly
86 computes the amount of dynamic space used.
87 * bug fix: disassembler missing ",8" on SHLD
88 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
89 that provide an "invalid" stack frame link for the signal handler
90 itself now use the saved-fp-and-pc mechanism to pick up from the stack
91 frame in the interrupt (signal) context. This is known to affect
92 threaded FreeBSD/x86-64.
93 * bug fix: some LOOP statements couldn't be compiled.
95 * bug fix: sb-sequence:dosequence works on literal vectors.
96 * bug fix: errors in generic arithmetic show the assembly routine's
97 caller on x86 and x86-64. (lp#800343)
98 * bug fix: Compile-time type errors should never result in COMPILE-FILE
100 * bug fix: Known bad local calls do not cause strange failures when
101 emitting or dumping code. (lp#504121)
102 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
103 codegen errors: type checks are inserted as necessary. (lp#1177703)
104 * bug fix: Unsigned modular arithmetic is correctly converted into signed
105 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
106 * bug fix: a combination of inlined local function with &optional and
107 recursion no longer causes undescriptive compiler errors. (lp#1180992)
108 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
109 when testing for non-zero-ness.
110 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
112 * bug fix: Type mismatch for the value of conditional expressions are
113 correctly reported when detected at compile-time, instead of complaining
114 about a constant NIL (similar for non-EQ-comparable catch tags).
115 * bug fix: Referring to INLINE global functions as values should not result
116 in a compilation failure. (lp#1035721)
117 * optimization: faster ISQRT on fixnums and small bignums
118 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
119 * optimization: On x86-64, the number of multi-byte NOP instructions used
120 for code alignment is now always minimal.
121 * optimization: On 64-bit targets, the compiler generates much faster
122 code for type checks for types known at compile time that are smaller
123 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
124 their COMPLEX variants.
125 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
126 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
127 * optimization: ROOM no longer conses so egregiously on non-x86oid
129 * optimization: associative bitwise operations reassociate patterns like
130 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
132 * optimization: quasiquote expressions now perform more constant folding,
133 instead of consing equal lists at runtime. (lp#1026439)
134 * optimization: local call analysis of inlined higher-order function
135 should converge more quickly, resulting in better code for complex
137 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
138 integer constants are handled more cleverly, especially when they
139 can be represented as sign-extended (signed-byte 32). (Based on a
140 patch by Douglas Katzman)
141 * optimization: IF/IF conversion should reliably result in sane code
142 when (some of) the results of the inner IF are always false or
144 * optimization: On x86oids, variable right shifts of machine words are
145 compiled into straight SAR/SHR, instead of going through the generic
148 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
149 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
151 * bug fix: :allocation slot option works for condition slots
153 * bug fix: redefining conditions does not lead to multiple evaluations of
154 hairy slot initfunctions anymore (lp#1164969)
155 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
157 * bug fix: function constants now work as initforms and default initarg
158 values of conditions (lp#539517)
159 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
160 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
161 * bug fix: no more bogus ## references when pretty printing backquoted
162 forms with non-trivial structure sharing. (lp#1161218)
163 * bug fix: Don't signal an error on (setf (documentation nil 'function)
164 "doc"). Signal a style-warning instead when trying to set documentation
165 of NIL for all other documentation types. (Reported by Zach
166 Beane; regression since 2e52fa05.)
167 * bug fix: modular arithmetic involving large constants and conditionals
168 should no longer result in spurious dead code elimination. (Reported by
170 * bug fix: our mach exception handler can seemingly called very early in
171 the program execution process on OS X 10.8.0. Try and handle that case
172 robustly, without potentially leaking mach ports too much.
173 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
175 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
176 * enhancement: the continuable error when defknown-ing over extant
177 fndb entries can be ignored by passing :overwrite-fndb-silently t
178 as a keyword argument to sb-c:defknown (after attributes). Useful
179 to allow defknown to be re-loaded. Use with :allow-other-keys t
180 for backward compatibility.
181 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
183 * bug fix: Prevent a make-array transform from modifying source forms
184 causing problems for inlined code. Thanks to Bart Botta.
185 (regression since 1.0.42.11-bis)
186 * bug fix: clear-output calls the correct gray stream routine,
187 sb-gray:stream-clear-output. (lp#1153257)
188 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
190 * bug fix: Better error messages for package operations (lp#1154776)
191 * bug fix: delete-package on a nonexistent package should signal a cerror.
192 (regression since 1.0.37.44).
193 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
194 (lp#1154946, lp#1072112)
195 * bug fix: compiling make-array no longer signals an error when the
196 element-type is an uknown type, a warning is issued instead.
197 Thanks to James Kalenius (lp#1156095)
198 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
199 produces wrong results for some inputs. (Thanks to Jan Moringen.)
202 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
203 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
205 * new feature: package local nicknames. See manual for details.
206 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
207 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
208 * enhancement: easier to use restarts for resolving name-conflicts
209 resulting from IMPORT, EXPORT, or USE-PACKAGE.
210 * enhancement: variant DEFPACKAGE forms now signal a full error with
211 restarts provided for resolving the situation. (lp#891351)
212 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
213 DEFPACKAGE forms can now signal a full error with restarts provided for
214 resolving the situation. See manual for details. (lp#891351)
215 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
216 (Thanks to Anton Kovalenko.) (lp#1102748)
217 * enhancement: backtrace improvements
218 ** secondary CLOS dispatch functions have better debug names (lp#503081)
219 ** easier to read method names in backtraces. See
220 SB-DEBUG:*METHOD-FRAME-STYLE*.
221 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
222 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
223 SB-DEBUG:BACKTRACE-AS-LIST.
224 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
225 information is available in less intrusive form as frame annotations.
226 * enhancement: SB-POSIX now provides MAP-ANON.
227 * enhancement: test-suite results are colorized, failures in red, unexpected
228 success in green. Works on Windows and on terminals with ANSI escape code
229 support. Can be disabled with --no-color.
230 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
231 (thanks to James M. Lawrence)
232 * bug fix: no more unused variable style warnings from RESTART-CASE
233 macroexpansion (lp#1113859)
234 * bug fix: no more unused variable style warnings when loading
235 sb-bsd-sockets.asd (lp#1114681)
236 * bug fix: deleting a package removes it from implementation-package
237 lists of other packages.
238 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
239 This does not fix the occasional "interrupt already pending" issue, though.
240 * bug fix: (setf (documentation 'x 'function)) and
241 (setf (documentation #'x t)) set documentation in different places.
242 (regression since 1.0.43.63)
243 * bug fix: build on newer glibc. (lp#1095036)
245 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
246 * optimization: LOOP expressions using "of-type character" have slightly
247 more efficient expansions.
248 * bug fix: very long (or infinite) constant lists in DOLIST do not result
249 in very long compile times or heap exhaustion anymore. (lp#1095488)
250 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
251 * bug fix: adjust-array ignored :initial-element for simple-vectors.
253 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
254 longer cause infinite loops (on circular data) or violate eqlity
255 constraints. (lp#1099708)
256 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
258 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
259 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
261 * enhancement: support for C-c to interrupt the foreground thread
262 on Windows. (Thanks to Anton Kovalenko.)
263 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
264 * enhancement: Safepoint builds on POSIX platforms can now optionally be
265 built without pseudo-atomic sequences and their run-time overhead.
266 * enhancement: Threads created outside of Lisp can enter Lisp through
267 alien callbacks and appear as Lisp threads for the duration of that
268 function invocation. On safepoint builds only.
269 * enhancement: Miscellaneous improvements to namestrings and underlying
270 calls to OS functions for file system access on Windows. (Thanks to
272 * enhancement: The MSI installer support for Windows now uses Windows
273 Installer XML at least version 3.5 and includes various usability
274 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
275 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
276 on Windows. (Thanks to Anton Kovalenko.)
277 * enhancement: The Windows backend now supports the x86-64 platform.
278 (Thanks to Anton Kovalenko.)
279 * bug fix: fasls are now once again directly executable (on platforms
280 supporting shebang lines, with a suitably-installed sbcl).
281 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
282 * bug fix: Fix CAS access to slots of direct instances of structure classes
283 in the presence of subclasses sharing the same conc-name.
284 * bug fix: Logical pathname namestrings on Windows have been changed to
285 be lower-case, to minimize differences between POSIX and Windows.
287 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
288 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
289 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
290 (NT 5.0) is no longer being maintained.
291 * notice: Starting with this version, SBCL on Windows no longer supports
292 building with disabled thread support.
293 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
294 * enhancement: New feature sb-dynamic-core allows the runtime to be
295 rebuilt or relocated without requiring changes to the core file on
296 all linkage table platforms. Required on Windows. (Thanks to Anton
298 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
299 * enhancement: I/O on Windows unnamed pipes is interruptible
300 asynchronously using interrupt-thread, timers when running on Windows NT
301 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
303 * enhancement: Support for the experimental safepoint-based stop-the-world
304 protocol on the PowerPC platform.
305 * bug fix: Non-blocking reads from the Windows console were not necessarily
306 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
307 * bug fix: stability of threads on Windows has been improved upon through
308 an updated stop-the-world protocol (thanks to Anton Kovalenko).
310 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
311 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
312 (COMPILE and COMPILE-FILE still do.)
313 * optimization: the SPARC backend now supports the precise generational
314 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
315 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
316 * enhancement: add experimental support for the SB-THREAD feature and the
317 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
318 Threads are enabled by default, and this version of SBCL is considered
319 to be the last and final release to officially support building with
321 * optimization: The compiler no longer rotates loops in some cases where
322 this transformation actually lead to worse code being generated.
323 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
324 symbol-macros by lexical bindings.
325 * bug fix: stack allocation was prevented by high DEBUG declaration in
327 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
328 (thanks to SANO Masatoshi)
329 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
330 :JUNK-ALLOWED was true.
331 * bug fix: type derivation inferred overly conservative types for
332 unions of array types. (lp#1050768)
334 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
335 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
336 source annotation of DISASSEMBLE output. Defaults to T.
337 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
338 WAIT-P argument added to WITH-RECURSIVE-LOCK.
339 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
341 * enhancement: Optional features (not enabled by default) allow the
342 use of signals for inter-thread synchronization to be reduced on certain
343 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
344 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
345 to test these experimental features. Known remaining bugs include minor
346 thread safety issues, less timely freeing of memory by GC, and certain
347 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
348 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
349 comparisons, particularly on almost-sorted inputs.
350 * bug fix: Reading floats with large exponents no longer takes too much time
351 before reporting that the exponent is too large.
352 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
353 correctly when the received datagram is larger than the provided buffer.
354 (lp#1023438, thanks to Robert Uhl)
355 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
356 a SYMBOL-VALUE form with a constant symbol argument.
357 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
358 into a DEFCAS defined place was used as the place.
359 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
360 for from bit-vectors.
361 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
362 lead to internal errors or crashes (lp#1058799).
363 * documentation: a section on random number generation has been added to the
366 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
367 * enhancement: implicit generic function warnings now specify the package
368 in which the new generic function is being created.
369 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
370 updates of CAS-able places (similar to Clojure's swap!).
371 * enhancement: run-program no longer decodes and re-encodes environment when
372 :environment argument is not provided. (lp#985904)
373 * enhancement: errors during compiler-macro expansion no longer cause
374 runtime errors, only a compile-time warning, otherwise behaving as if
375 the compiler macro had declined to expand.
376 * optimization: On x86-64, code alignment of block headers is done with
377 multi-byte NOPs now instead of repetitions of the single-byte NOP.
378 * optimization: MAP-INTO is substantially faster when the target sequence is
379 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
380 thanks to James M. Lawrence)
381 * optimization: the compiler no longer heap-conses to check exits in cases
382 where the exit function is dynamic extent, or when it can prove the exit
383 function cannot escape. (lp#1002534)
384 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
385 element type, and vectors that aren't SIMPLE-ARRAYs.
386 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
387 speed (around 1/3 the time in some cases), and a little better in terms of
388 comparison calls. (Thanks to Takeru Ohta)
389 * bug fix: On SPARC, a limitation on the number of code constants emittable
390 by the compiler has been lifted, allowing certain long functions to
391 compiled and assembled which had previously been unsupported; fixes
392 cl-bench on this ISA (lp#1008996).
393 * bug fix: potential for infinite recursion during compilation of CLOS slot
394 typechecks when dependency graph had loops. (lp#1001799)
395 * bug fix: error forms reported with some program-errors were not escaped
397 * bug fix: functions from EVAL are now on more equal footing with functions
398 from COMPILE. (lp#1000783, lp#851170, lp#922408)
399 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
400 objects as its :METHOD-COMBINATION argument, not just lists designating
401 method combinations. (lp#936513)
402 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
404 * bug fix: restore build on solaris/sparc. (lp#1008506)
405 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
406 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
407 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
408 as keyword arguments no longer accidentally match unevaluated symbols
410 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
411 parameter was zero, now it signals an error. (lp#905817, fixed since
413 * bug fix: run-program with :pty t no longer makes the pty as the process's
415 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
418 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
419 * RANDOM enhancements and bug fixes:
420 ** bug fix: the range and distribution of random integers could be
421 catastrophically wrong when the compiler derived the type of its
422 argument as a disjoint set of small integers.
423 ** bug fix: the distribution of random integers is now completely
424 uniform even when the specified limit is not a power of two.
425 (Previously some values could be about 0.1 % more probable than
426 others in the worst case.) (lp#309467)
427 ** RANDOM on large integer arguments is generally faster and conses
428 less than before; this is visible for fixnums above a length of
429 about 24 bits, but extremely so for bignums: the old implementation
430 used time and space quadratical in the size of the argument there,
431 the new one is linear.
432 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
433 main entry point, SB-EXT:QUIT is deprecated.
434 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
435 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
436 * enhancement: FASL loading no longer grabs the world-lock.
437 * enhancement: GENCGC reclaims space more aggressively when objects being
438 allocated are a large fraction of the total available heap space.
440 * enhancement: backtraces show the correct number of arguments for frames
441 called with too many arguments.
442 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
444 * enhancement: ASDF has been updated 2.21.
445 * optimization: fewer uses of full calls to signed modular functions.
447 * optimization: typechecking alien values is typically 5 x faster.
448 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
450 * bug fix: file compilation performance issues when dumping subtypes
451 of CHARACTER (lp#994487)
452 * bug fix: fixed disassembly of some SSE instructions on x86-64.
453 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
454 OPEN. (lp#969352, thanks to Kambiz Darabi)
455 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
457 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
458 classoid even if X was not the proper name of the class. (lp#941102)
459 * bug fix: declaration leakage between lexical environments due to careless
460 use of NCONC in MAKE-LEXENV. (lp#924276)
461 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
462 *default-pathname-defaults* contains NAME or TYPE components.
463 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
464 from CL package, e.g. (loop . 10).
465 * bug fix: run-program with existent or non-existent files for :output or
466 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
467 returns NIL instead of signalling an obscure error.
468 * bug fix: fix miscompilation of some logand forms with large constant
469 arguments. (lp#974406)
470 * bug fix: account for funcallable-instance objects properly in ROOM.
471 * bug fix: incorrect octets reported for c-string decoding errors.
473 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
475 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
476 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
477 allowing faster release of memory back to the OS. (lp#991293)
478 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
479 existing deadline for the dynamic scope of its body.
480 * bug fix: compiler-internal interval arithmetic needed to be more
481 conservative about open intervals when operated on by monotonic but not
482 strictly-monotonic functions. (lp#975528)
483 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
484 it's also slightly faster. (lp#998926)
485 * bug fix: better error messages for malformed declarations.
487 * bug fix: define-condition didn't return the name of the defined condition.
489 ** improved docstrings: REPLACE (lp#965592)
491 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
492 * bug fix: fix copy-structure. When copying from stack to heap, garbage
493 could end up in the heap making GC unhappy.
494 (Thanks to James Knight, lp#911027)
496 ** SBCL can now be built using Clang.
497 ** ASDF has been updated 2.20.
498 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
499 * bug fix: don't complain about a too-hairy lexical environment for inlining
500 when the function has never been requested for inlining. (lp#963530)
502 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
503 * enhancements to building SBCL using make.sh:
504 ** --fancy can be specified to enable all supported feature enhancements.
505 ** --with-<feature> and --without-<feature> can be used to specify
506 which features to build with.
507 ** --arch option can be used to specify the architecture to build for.
508 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
509 full-blows cross-compilation.)
510 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
511 which allows specifying name of the default interning package for the
513 * enhancement: when *READ-EVAL* is true, arrays with element type other than
514 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
515 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
516 null alien when malloc() fails. (lp#891268)
517 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
518 conditions can be conveniently accessed through function with the same
519 name, analogously to CONTINUE.
520 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
521 from the printer by type, causing an error marker to be printed instead.
522 (Thanks to Attila Lendvai)
523 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
524 generally behave better when errors occur during printing.
525 * enhancement: the test runner now takes a --report-skipped-tests argument
526 to report the individual tests skipped as well as the number of skipped
528 * enhancement: undefined functions now appear in backtraces as ("undefined
529 function") instead of ("bogus stack frame") on x86oids.
530 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
531 deadlock errors are reported in an easier-to-decipher manner.
532 * enhancement: DESCRIBE on type designators reports the expansion in more
534 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
535 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
536 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
537 * enhancement: better disassembly of segment-prefixes on x86 and other
538 instruction prefixes (e.g. LOCK) on x86 and x86-64.
539 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
540 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
541 * optimization: SUBSEQ on vectors of unknown element type is substantially
543 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
544 be stack-allocated. (lp#902351)
545 * optimization: the compiler is smarter about representation selection for
546 floating point constants used in full calls.
547 * optimization: the compiler no longer refuses to coerce large fixnums to
548 single floats inline, except on x86 where this limitation is still
550 * optimization: truncation operations on integers with constant divisor
551 arguments 1 and -1 are optimized away.
552 * bug fix: deadlock detection could report the same deadlock twice, for
553 two different threads. Now a single deadlock is reported exactly once.
554 * bug fix: interval-arithmetic division during type derivation did not
555 account for signed zeros.
556 * bug fix: compiler error when typechecking a call to a function with
557 non-constant keyword arguments.
558 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
559 * bug fix: condition slot accessors no longer cause undefined function
560 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
561 form that defines them. (lp#896379)
562 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
564 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
565 bogusly report NIL, T.
566 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
567 required arguments ignored and performed assignments to others.
569 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
570 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
571 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
572 * bug fix: redefining a function whose previous definition contained an
573 unknown type no longer causes a style-warning. (lp#806243)
574 * bug fix: undefined functions now appear in backtraces as ("undefined
575 function") instead of ("bogus stack frame") on non-x86oids.
576 * bug fix: backtraces are no longer cut off at ("undefined function") when
577 called under certain circumstances (involving a caller-allocated stack
579 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
580 systems. (regression since 1.0.53)
581 * bug fix: GC deadlocks from dladdr() on certain platforms.
582 * bug fix: broken standard streams no longer automatically cause recursive
583 errors on debugger entry.
584 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
585 (regression since 1.0.53)
586 * bug fix: attempts to stack allocate a required argument to a function with
587 an external entry point caused compiler-errors.
588 * bug fix: compiler notes for failed stack allocation for a function argument
589 no longer claim to be unable to stack allocate the function.
590 * bug fix: COERCE now signals a type-error on several coercions to
591 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
592 * bug fix: missing failure-to-stack-allocate compiler notes for some
593 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
594 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
596 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
598 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
599 * minor incompatible changes:
600 ** RENAME-FILE on a symbolic links used to rename the linked-to file
602 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
603 directory, but now signal an error instead. Use TRUENAME to resolve the
604 pathname if you wish to delete the linked directory, and DELETE-FILE if
605 you wish to delete the
606 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
607 symbols associated with it will trigger a compile-time warning.
608 * thread-related enhancements:
609 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
610 Many thanks to generous donors!)
611 ** Threading is now more reliable on non-Linux platforms. We still don't
612 consider threads on non-Linux platforms good enough to enable them by
613 default, but they're in a clearly better shape now.
614 ** Deadlines supported now on all platforms.
615 ** All blocking functions in the threading API now have a :TIMEOUT
617 ** Semaphore notification objects have been added to SB-THREAD.
618 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
619 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
620 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
621 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
622 using an API anologous to defining new SETFable places.
623 * GC-related enhancements and bug fixes:
624 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
625 and Gb suffixes. Default is megabytes as before.
626 ** on GENCGC targets, the default dynamic space size is now 512Mb for
627 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
628 exception, defaulting to mere 444Mb to fit under default ulimits.) The
629 new defaults are in place to prevent hitting swap on low-end systems.
630 Use build-time option --dynamic-space-size to build an SBCL with
631 another default, or the runtime option to adjust the size at startup: a
632 good size is at most equal to the amount of physical memory the system
634 ** on GENCGC targets, nursery and generation sizes now default to 5% of
636 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
637 refuses to create SIMPLE-FUN objects.
638 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
640 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
641 validation of pointer objects as GENCGC does, instead of a
642 comparatively weak bounds-check against the heap spaces.
643 * SB-BSD-SOCKETS bug fixes:
644 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
645 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
646 systems with getaddrinfo().
647 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
648 safe outside systems with getaddrinfo().
649 * enhancement: ASDF has been updated 2.019.
650 * enhancement: special-case TCO prevention for functions which never return
651 extended to untrusted types, keeping one more frame's worth of debug
652 information around in many cases.
653 * enhancement: debug-names of anonymous and local function are more
654 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
655 * enhancement: on win32, ABS of complex floats guards better against
656 overflows. (lp#888410)
657 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
658 process exiting with code 1. (lp#676987)
659 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
660 the system where on the filesystem the SBCL sources themselves are
661 located. (Thanks to Zach Beane)
662 * enhancement: the compiler is now able to derive tighter bounds for
663 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
664 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
665 correctly, even on wide-fixnum builds. (lp#887220)
666 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
667 resolved to directories.
668 * bug fix: type mismatch when assigning to lexical variables no longer
669 result in fasl-dumping internal type objects. (lp#890750)
670 * bug fix: type mismatch on (SETF AREF) and function return values no
671 longer result in fasl-dumping internal type objects.
672 * bug fix: With several combinations of argument types, for example (EXPT
673 <integer> <(complex double)>), EXPT now uses double-precision throughout
674 instead of partially calculating only to single-precision. (lp#741564;
675 thanks to Lutz Euler)
676 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
677 objects when interrupted by GC on PPC.
679 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
680 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
681 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
682 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
683 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
684 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
685 targets is now 63 bits (up from 61).
686 * enhancement: DESCRIBE now reports a lambda-list and source location
687 for complext setf-expanders.
688 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
689 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
690 of multiple-valued places to be set to NIL, instead of signalling an
691 error (per a careful reading of CLHS 5.1.2.3).
692 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
693 * bug fix: repair crash in x86oid darwin signal handling emulation
694 when built with certain compilers.
695 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
696 rotation arguments on x86-64. (lp#882151)
697 * bug fix: low-level control flow optimisations could result in bogus
698 code in functions with tail and non-tail calls to local functions on
700 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
701 to emit literal characters > (code-char 4095), for comparisons with
703 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
704 on 64 bit platforms. (lp#881445)
705 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
706 delete the wrong file when using relative pathnames. (lp#882877)
707 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
708 sequences and :KEY NIL.
710 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
711 * enhancement: ASDF has been updated to version 2.017.
712 * enhancement: the --core command line option now accepts binaries with
714 * enhancement: when built with :sb-core-compression, core files (regular
715 or executable) can be compressed with zlib. Use the :COMPRESSION
716 argument to SAVE-LISP-AND-DIE to specify a compression level.
717 * enhancement: --[no-]merge-core-pages determines whether the runtime
718 hints the operating system that identical core pages between SBCL
719 processes should share the same physical memory. Default is to only
720 enable this for compressed cores.
721 * optimization: SLEEP no longer conses.
722 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
723 or bit-vectors when using the standard pretty-print dispatch table.
724 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
726 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
727 AREF, CHAR, etc. (lp#826971)
728 * bug fix: compiler-errors causes by integer arguments with composed of
729 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
730 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
731 expressions. (lp#770184)
732 * bug fix: complex single float literals are correctly aligned when used
733 as arguments of arithmetic operators.
734 * bug fix: on 32-bit platforms, rounding of double floats larger than a
735 fixnum is correct. (reported by Peter Keller)
736 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
737 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
739 * bug fix: redefining classes such that slots with custom allocation are
740 added or removed works again.
742 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
743 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
744 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
745 MAKE-SOCKET-STREAM if using SERVE-EVENT.
746 * enhancement: added support for socket keepalive timeout intervals
747 and probe counts on Linux.
748 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
749 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
750 * enhancement: added new toplevel options --quit and --non-interactive
752 * enhancement: the Windows port of SBCL now builds and runs on Wine
753 (thanks to Anton Kovalenko).
754 * enhancement: more, and more correct, SSE instruction definitions on
755 x86-64 (thanks to Alexander Gavrilov).
756 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
757 to help the processor execute spin loops, when applicable. Currently
758 implemented for x86 and x86-64.
759 * optimization: unsigned integer divisions by a constant are implemented
760 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
761 * optimization: improved type-derivation for LOAD-TIME-VALUE.
762 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
763 instructions. (lp#814688)
764 * bug fix: COERCE to unfinalized extended sequence classes now works.
765 (reported by Jan Moringen; lp#815155)
766 * bug fix: a compiler error during typecheck generation, reported by Eric
768 * bug fix: obsolete instance protocol fires when shared slots are added
770 * bug fix: fixed-format floating point printing with scaling factors.
772 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
773 backtraces. (lp#818460)
774 * bug fix: better backtraces for interrupted syscall frames on x86.
776 * bug fix: SSE comparison instructions can be disassembled even when one
777 operand is in memory. (lp#814702)
778 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
779 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
780 type information associated with the VALUES form.
781 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
783 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
784 first write (lp#561642).
785 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
786 * bug fix: bound propagation involving conversion of large bignums to
787 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
789 * bug fix: &REST to &MORE conversion still works in unsafe call to known
790 functions; reported by Lutz Euler (lp#826459).
791 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
794 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
795 * enhancement: errors from FD handlers now provide a restart to remove
796 the offending handler.
797 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
799 * enhancement: location of user or system initialization file can now easily
800 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
801 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
802 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
803 the thunk, as a keyword argument, :arguments.
804 * enhancement: constraint propagation is simplified (and sped up) when
805 COMPILATION-SPEED > SPEED.
806 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
807 * enhancement: debugger understands &MORE arguments better.
808 * optimization: extracting bits of a single-float on x86-64 has been
809 optimized. (lp#555201)
810 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
811 when (> SPEED SPACE).
812 * optimization: local call trampolines (x86 and x86-64) are emitted
814 * optimization: implicit value cells for dynamic-extent closed-over bindings
815 on x86 and x86-64 can hold unboxed values as well.
816 * meta-optimization: improved compilation speed, especially for large
817 functions. (lp#792363 and lp#394206)
818 * bug fix: bound derivation for floating point operations is now more
819 careful about rounding possibly closing open bounds. (lp#793771)
820 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
821 backwards incompatible change in 1.0.48.27)
822 * bug fix: occasional debugger errors in when a type-error occured in a
823 function with dynamic-extent &rest list.
824 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
825 boa-construtors can be used to initialized structure slots.
826 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
827 (lp#795705, regression)
828 * bug fix: DIRECTORY works better on logical pathnames.
829 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
830 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
831 * bug fix: the compiler no longer constant-folds NaNs in
832 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
833 * bug fix: FORMAT now handles floating point rounding correct, eg.
834 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
836 * bug fix: style warning during lambda-list introspection of generic
837 functions with both optional and key argments.
838 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
840 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
843 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
844 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
845 interrupts for its body.
846 * enhancement: source locations are now available for files loaded as
847 source, compile-time-too evaluation, and initialization files.
848 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
849 virtual source-file information, eg. overriding input-file of COMPILE-FILE
850 when a temporary file is used for compilation.
851 * enhancement: ASDF has been updated to version 2.015.3.
852 * enhancement: backtraces involving frames from the default evaluator are
854 * enhancement: RUN-PROGRAM works with user-defined binary input and output
856 * enhancement: more informative compile-time warnings and runtime errors for
857 type-errors detected at compile-time.
858 * enhancement: deadlock detection for mutexes and spinlocks.
859 * enhancement: dynamic-extent for &rest lists stack allocate only their
860 spines, not their argumets. While portable code should not rely on this,
861 particularly in combination with inlining, it should make dynamic-extent
862 easier to use safely.
863 * enhancement: SB-POSIX improvements:
864 ** WNOHANG and WUNTRACED are exported.
865 ** SYSCALL-ERROR now also provides the name of the failing system call.
866 * enhancement: --script improvements:
867 ** errors on standard input, output, and error streams are handled and
868 cause scripts to exit silently, making them easier to use in shell
870 ** backtraces from scripts now go to standard error instead of the
871 terminal even if one is available.
872 ** --script can be an argument, causing the script to be loaded from
874 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
875 strings to foreign memory.
876 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
877 a file, making it easier to understand heap dynamics.
878 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
879 allows the compiler to automatically elide rest-list allocation so long as
880 the call sites are in functions that the compiler knows cannot escape.
882 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
883 especially in safe code when none of the required arguments have changed
885 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
886 uninterruptible, as well as blocking reads from socket streams created
887 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
888 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
889 from the to-char if the from-char is not a dispatch-macro character.
890 * bug fix: references to undefined variables in function calls that are
891 optimized away now signal a runtime error. (lp#722734)
892 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
893 types from a function defined in the same file. (regression from
895 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
897 * bug fix: spurious errors during QUIT when standard streams were closed.
899 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
900 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
901 years, is now no longer supported.
902 * enhancement: read() and write() have been added to SB-POSIX.
903 * enhancement: types of DEFSTRUCT constructors are proclaimed more
904 accurately, allowing better typechecking of call-sites.
905 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
906 are no longer caught. (reverted to pre 1.0.34 behaviour)
907 * optimization: slightly faster ISQRT. (lp#713343)
908 * bug fix: better support for Solaris /bin/sh in sh-based tests.
909 * bug fix: TRACE behaves better when attempting to trace undefined
910 functions. (lp#740717)
911 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
912 to (FUNCALL #'(LAMBDA ...) ...).
913 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
914 a compile-time error. (lp#720382)
915 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
917 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
918 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
919 optimization. (regression from 1.0.45.18/1.0.46.15)
920 * bug fix: package locks did not protects against compile-time side-effects
921 of DEFUN. (lp#675584)
922 * bug fix: --dynamic-space-size argument is validated more carefully.
924 * bug fix: memory fault from printing a malformed simple-condition.
926 * bug fix: redefining classes so that slot-definition classes change now
927 engages the obsolete instance protocol. (lp#766271)
928 * bug fix: constant improper lists could break source coverage recording.
930 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
933 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
934 * bug fix: fix mach port rights leaks in mach exception handling code on
935 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
937 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
938 * enhancement: redefinition warnings for macros from different files. (lp#434657)
939 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
940 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
941 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
942 processed using EVAL -- now the appropriate toplevel form is reported instead.
943 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
944 declarations. (lp#726331)
945 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
946 that NIL/NULL is excluded from the type.
947 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
949 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
951 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
952 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
953 stack-allocated values out of their dynamic-extent. (lp#310175)
954 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
955 x86-64 builds caused a type-error.
956 * bug fix: calling COMPILE with something else than a lambda-expression as the
957 second argument reports a more sensible error. (lp#718905)
958 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
959 are detected. (lp#520607)
960 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
962 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
963 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
964 methods. (regression from 1.0.45.18)
965 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
966 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
967 * bug fix: several foreign functions accepting string also accepted NIL and
968 consequently caused a memory fault at 0 now signal a type-error instead.
970 * bug fix: under rare circumstances, constraint propagation could rewrite a
971 variable reference to refer to a variable not in scope, causing an error
972 during physical environment analysis when attempting to close over the
973 variable. (lp#551227)
974 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
976 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
977 * enhancement: largefile support on Solaris.
978 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
979 arguments (lp#710017)
980 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
981 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
983 * optimization: ERROR and CERROR are approximately 5 times faster.
984 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
985 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
986 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
987 up instance creation in those cases.
988 * optimization: arithmetic operations with multiple constant arguments in now
989 have them reduced at compile-time. (lp#676414)
990 * optimization: determining current character position on string-streams for
991 pretty-printing was overly slow.
992 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
993 lifetime analysis to overwrite closed-over variables (lp#681092).
994 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
995 were not handled correctly (lp#713063).
996 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
998 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
999 mistake. (lp#667297).
1000 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1001 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1002 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1003 unintern the wrong symbol with the same name. (lp#693796)
1004 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1005 making it possible to restore the initial table if it has been messed up.
1008 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1009 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1010 Refer to documentation for details.
1011 * enhancement: ASDF has been updated to version 2.010.
1012 * optimization: mutated closed-over variables that are only accessed by
1013 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1014 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1015 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1016 * optimization: UNWIND-PROTECT cleanup functions are now declared
1018 * bug fix: backtracing function with &REST arguments now shows the full
1019 argument list. (lp#310173)
1020 * bug fix: return types for functions with complex lambda-lists are now
1021 derived properly (lp#384892)
1022 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1023 long string arguments slowed the compiler down to a crawl.
1024 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1025 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1026 in the DEFMETHOD body.
1027 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1028 messages, being instead replaced with the corresponding function name.
1029 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1030 operators. (lp#309448)
1032 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1033 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1034 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1035 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1037 * enhancement: default dynamic-space size can be configured at build-time
1038 without touching source, using the --dynamic-space-size argument to make.sh.
1039 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1040 qualities, and mentions ALWAYS-BOUND declarations.
1041 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1043 * enhancement: ASDF has been updated to 2.009.
1044 * enhancement: the system detects known type-erros in calls better,
1045 signalling a full warning about violated proclaimed FTYPEs and violations
1046 of derived FTYPEs within the same file, including self-calls.
1047 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1048 * optimization: constant-folding exploits numeric and character types, in
1049 addition member types.
1050 * optimization: numeric, character and member types that are inhabited by
1051 exactly one value are tested with EQL.
1052 * optimization: more conditional branches are eliminated during IR1.
1053 Branches are simplified before performing if/if-conversion, and simple
1054 equivalent branches (that only read the same constant or variable) are
1056 * improvements to the Windows port:
1057 ** change: canonical unparsing form for pathname namestrings now uses / as
1058 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1059 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1060 on Windows. (thanks to Kalyanov Dmitry)
1061 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1063 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1064 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1065 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1066 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1068 * bug fix: interrupts arriving during CL:OPEN caused an error.
1069 * bug fix: overeager character buffering could cause input to block
1070 spuriously when reading from a pipe (lp#643686)
1071 * bug fix: more efficient timer expiry should avoid starvation on systems
1072 where number of SIGALRMs per second is restricted. (lp#375515)
1073 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1074 * bug fix: compile-times no longer scale linearly with the size of
1075 quoted lists in source-code. (lp#654289)
1076 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1077 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1078 so badly. (lp#654485)
1079 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1080 an error for eg. STRUCTURE. (lp#458015)
1081 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1082 (lp#613871, thanks to Roman Marynchak)
1083 * bug fix: more reliable &REST list type derivation. (lp#655203)
1084 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1085 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1086 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1087 also declared NOTINLINE. (lp#655581)
1088 * bug fix: the compiler could attempt to emit constant left shifts of
1089 greater value than n-word-bits. (lp#309063)
1090 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1091 type information for the function being set. (lp#659220)
1092 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1093 containing self-calls were recompiled with a new signature, and failed
1094 to warn when a self-call using the old signature was left in. (lp#655126)
1095 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1096 :DEFAULT when the default external had character size other than 8 bits.
1098 * bug fix: derived types of functions in the same file were implicitly
1099 trusted, leading to potential heap corruption when those function were
1100 defined incompatibly. (lp#657499)
1101 * bug fix: existing ASDF source registries are ignored when building
1102 contribs (lp#659105)
1103 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1104 (lp#655824, thanks to Roman Marynchak)
1105 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1106 package-lock violation was detected. (lp#660752)
1107 * bug fix: the system can store different docstrings for a single function
1108 under different names. (lp#661631, regression from 1.0.29.24)
1109 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1110 properly. (lp#384801)
1111 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1112 of specified length could confuse the type derivation in unsafe code.
1114 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1115 fork with multiple Lisp threads running is made on every platform,
1116 not just Darwin. (lp#451111)
1117 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1118 around when core was saved, which could cause undefined behaviour when the
1120 * bug fix: Allow UNTRACE of functions that are no longer defined
1121 (lp#667657, thanks to Attila Lendvai)
1122 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1123 compile-time warning (lp#664373, thanks to Stas Boukarev)
1125 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1126 * incompatible change: FD-STREAMS no longer participate in the serve-event
1127 event-loop by default. (lp#316072)
1128 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1129 affects streams from CL:OPEN.
1130 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1131 default, but this is liable to change: applications needing serve-event
1132 for socket streams should explicitly request it using :SERVE-EVENTS T
1134 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1136 * enhancement: CLOS effective method functions and defclass slot typechecking
1137 function now have debug names for use in backtraces and profiles.
1138 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1140 * enhancement: symbols are printed using fully qualified names in several
1141 error and warning messages which are often associated with package
1142 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1143 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1144 thanks to Andrew Golding)
1145 * bug fix: reading /proc files on Linux works. (lp#425199)
1146 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1148 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1149 breaking code that tried to write the value of a printer control variable.
1150 (lp#581564, thanks to Stas Boukarev)
1151 * bug fix: WRITE compiler macro did not handle output stream designators
1152 correctly. (lp#598374, thanks to Stas Boukarev)
1153 * bug fix: better availability of names of foreign functions in backtraces
1154 on Linux. (lp#626962, thanks to Stas Boukarev)
1155 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1156 lp#627581, thanks to Josh Elsasser and Jim Wise)
1157 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1158 thanks to Josh Elsasser)
1159 * bug fix: using aliases for builtin classes as defmethod specializers
1160 without adding DEFTYPEs for them works. (lp#618387)
1161 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1163 * bug fix: legally dynamic-extent lists and vectors used as
1164 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1165 * bug fix: inline-expansion creating references to dead lambda-variables
1166 (lp#454681, thanks to Alexey Dejneka)
1167 * bug fix: better error message for bogus numerical arguments to RANDOM.
1168 (lp#598986, thanks to Stas Boukarev)
1169 * bug fix: the compiler occasionally inlined references from incompatible
1170 environments occurs. (lp#308951)
1171 * bug fix: the compiler threw an error when trying to compile a local
1172 function (labels or flet) known to take a specialized complex argument.
1173 (not in launchpad, reported by sykopomp in #lispgames)
1174 * bug fix: package-locks failed to protect against compile-time effects of
1175 DEFUN when the symbol previously had a macro definition. (lp#576637)
1176 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1177 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1178 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1179 * bug fix: evaluation in debugger REPL works using the global context when
1180 in frames that do not have sufficient debug information.
1181 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1183 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1185 * bug fix: interrupt taking longer than the requested period caused SLEEP
1186 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1188 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1190 ** Cross-compilation host is now specified to make.sh using
1191 command-line argument --xc-host=<command> instead of a positional
1192 argument. (thanks to Daniel Herring)
1193 ** Install location can be specified to make.sh using command-line
1194 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1195 * optimization: The default implementation of
1196 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1197 * enhancement: Explicit memory barrier operations are now available for use
1198 by multithreaded code. See documentation for details.
1199 * enhancement: Experimental support for threading on Linux/PPC.
1200 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1201 * bug fix: EXPT signals an error if first argument is a zero and second
1202 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1203 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1204 (lp#576594, thanks to Roman Marynchak)
1205 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1206 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1208 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1209 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1210 cached, leading to many fewer expensive calls to
1211 COMPUTE-APPLICABLE-METHODS.
1212 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1213 CLASS argument, search for and call an appropriate optimized ctor function
1215 * bug fix: WRITE always returns the correct value.
1217 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1218 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1219 * bug fix: Name conflicts between symbols passed as arguments to a single
1220 call to IMPORT no longer add multiple symbols with the same name to the
1221 package (detectable via DO-SYMBOLS).
1222 * bug fix: support building without the dlshim on darwin x86 and x86-64
1224 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1226 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1227 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1229 * bug fix: linkage-table entries on PPC now no longer overflow their
1230 space allocation (potentially causing crashes if they are written out
1232 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1233 platforms, preventing the GC from seeing stale pointers on the control
1234 stack in subsequent GCs (which would, and does, break invariants).
1235 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1236 * bug fix: Literal characters with code points greater than about 32767
1237 now work on PPC UNICODE builds.
1238 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1239 high order bits are explicitly cleared out. In some contrived situations,
1240 this could lead to wrong results in mixed real/complex float arithmetic.
1241 * bug fix: Fix function/macro redefinition warnings when building with
1242 clisp. (lp#576787, thanks to Josh Elsasser)
1243 * new platform: experimental support for ppc/openbsd (thanks to Josh
1245 * bug fix: Floating-point traps now work on ppc/linux.
1247 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1248 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1249 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1250 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1251 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1252 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1253 SB-THREAD:GRAB-MUTEX.
1254 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1255 contain additional data structures and tools for concurrent programming;
1256 at the moment it contains a lock-free queue, and a lock-free mailbox
1258 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1259 GET-MUTEX but takes &key rather than &optional parameters. Also added
1260 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1262 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1263 SB-THREAD:WAIT-ON-SEMAPHORE.
1264 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1266 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1267 conditions to defer the deadline for forever.
1268 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1270 * enhancement: errors from NO-APPLICABLE-METHOD and
1271 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1272 generic function call.
1273 * enhancement: SB-BSD-SOCKET improvements
1274 ** sockets and socket streams now have a more informative printed
1275 representation based on the corresponding SOCKET-NAME and
1277 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1279 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1280 CL:CLOSE when appropriate, and no longer disassociates the stream
1281 from the socket if close failed. (lp#543951)
1282 * improvements to the instrumenting profiler
1283 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1284 ** optimization: counters no longer use locks for the overflow mode.
1285 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1286 incurred an off-by-one miscount.
1287 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1288 * enhancement: improved DEFMETHOD pretty-printing.
1289 * enhancement: perform range reduction when arguments are too large for
1290 x87's transcendentals (instead of returning 0). (lp#327192)
1291 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1292 some of CL-PPCRE's macros. (lp#570079)
1293 * enhancement: our machine code is slightly less hostile to valgrind on
1295 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1296 to Robert Swindells and Aleksej Saushev)
1297 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1298 * bug fix: a rare case of startup-time page table corruption.
1299 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1300 to timeouts could be left in an inconsistent state.
1301 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1302 * bug fix: misoptimization of multiplication by one in
1303 (SB-C::FLOAT-ACCURACY 0) policies.
1304 * bug fix: miscounts in SB-PROFILE.
1305 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1306 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1307 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1308 up itself" (March 2010) for further details.
1309 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1310 against length of the list if the element is found before the specified
1311 END is reached. (thanks to Alec Berryman, lp#554385)
1312 * bug fix: errors signalled during package graph modification no longer
1313 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1314 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1315 :SB-DOC feature. (lp#552564)
1316 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1317 * bug fix: more robust runtime executable path detection. (lp#375549)
1318 * bug fix: GCD always returns positive values. (lp#413680)
1319 * bug fix: Converting division to multiplication by reciprocal handles
1321 * bug fix: We were too eager in eliding range reduction tests on x87.
1322 The maximal magnitude is 2^63, not 2^64.
1323 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1325 * bug fix: Maybe restore buildability on Alpha.
1326 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1328 * bug fix: RANDOM-STATE can be printed readably again.
1329 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1330 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1331 types) could result in type mismatches during compilation.
1333 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1334 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1335 stack frame thrown from.
1336 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1337 compiler optimization qualities inside dynamic extent of its body.
1338 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1339 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1341 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1342 constraint propgation, allowing better compilation eg. when used to
1343 access structures with WITH-SLOTS. (lp#520366)
1344 * optimization: the compiler is now more aware of the type of the underlying
1345 storage vector for multidimensional simple arrays resulting in better code
1346 for accessing such arrays.
1347 * optimization: passing NIL as the environment argument to TYPEP no longer
1348 inhibits optimizing it. (lp#309788)
1349 * optimization: more efficient register usage when handling single-float
1350 arguments on x86-64. (thanks to Lutz Euler)
1351 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1352 pre-allocated temporary vectors. (lp#496249)
1353 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1354 in :INITIAL-CONTENTS. (lp#523612)
1355 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1356 functions. (lp#524707)
1357 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1358 WITH-SLOTS usages during compilation.
1359 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1360 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1361 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1362 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1363 instruction (tested on x86oid linux with ud2-breakpoints).
1364 * bug fix: slam.sh now works on win32.
1365 * bug fix: better differences of numeric types. (lp#309124)
1366 * bug fix: arrays declared intersection and union types can have their
1367 upgraded element type derived. (lp#316078)
1368 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1369 threads started during profiling. (lp#472499)
1370 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1372 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1373 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1374 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1375 values instead of signaling an error. (lp#309093)
1376 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1378 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1379 declarations (lp#497321)
1380 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1381 and failed to detect circular lists (lp#452008)
1382 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1384 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1385 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1386 due to it, so that handlers can run.
1387 * bug fix: reparsing undefined types if they have become defined since
1388 parsing. (lp#309128)
1389 * bug fix: missing &REST type in a proclamation for a function with both
1390 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1391 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1392 expanded calls (lp#542174)
1393 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1394 than just at toplevel form.
1396 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1397 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1398 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1399 but work on type specifiers.
1400 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1401 to name a type specifier.
1402 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1403 specifier is valid where "valid" basically means "would be accepted as
1404 second argument of TYPEP".
1405 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1406 returns the function's declared, or derived FTYPE.
1407 * new feature: SB-POSIX now supports accessing the d_ino member of
1408 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1409 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1410 provide for seeding a RANDOM-STATE object with user-provided data or
1411 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1412 attempt to initialize the returned state from the operating system's
1413 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1414 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1415 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1416 * bug fix: Fix grammar and style issues for the docstrings of
1417 printer-related variables and functions. (Thanks to mon_key; launchpad
1419 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1421 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1422 in a row even though a handler defered the deadline long into the
1424 * bug fix: A deadline handler was run without interrupts enabled for a
1425 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1426 in infinitely spinning, non-killable threads.
1427 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1428 before reaching the erring stack frame.
1429 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1430 real power. (launchpad bug lp#525949)
1431 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1432 GENCGC platforms. (launchpad bug lp#529014)
1433 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1434 (launchpad bug lp#525916)
1435 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1436 (Thanks to Robert Goldman)
1438 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1439 * optimization: ROUND with a single single-float or double-float argument
1440 is properly inlined when possible.
1441 * optimization: Slightly better code is generated for integer<->float
1442 conversions and for single-float<->double-float conversions on x86-64.
1443 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1444 code for 32-bit and 64-bit rotations on x86-64.
1445 * bug fix: The install script changes the ownership of directories as well
1446 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1447 launchpad bug lp#508485)
1448 * bug fix: TRUNCATE with a single single-float or double-float argument is
1449 properly inlined when possible. (launchpad bug lp#489388)
1450 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1451 no longer causes a compiler error on x86 and ppc.
1452 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1453 always relative to *READTABLE* rather than the passed argument.
1455 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1456 * minor incompatible change: threading support is now enabled by default
1458 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1460 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1461 are now caught and reported just like errors during macroexpansion.
1462 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1463 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1464 * enhancement: ASDF systems can now depends on SB-QUEUE.
1465 * fixes and improvements related to Unicode and external formats:
1466 ** bug fix: error handling and restart usage in the ucs-2 external format
1468 ** there is now an implementation of the ucs-4 external format.
1469 ** the utf-16 and utf-32 external formats are supported.
1470 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1471 in the environment. setenv() and unsetenv() are also provided. (reported by
1472 Fare Rideau; launchpad bug lp#460455)
1473 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1474 loading. This ensures sensible errors for .FASL files from other
1475 implementations on case-insensitive filesystems. (reported by Willem
1476 Broekema; launchpad bug lp#489417)
1477 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1478 Willem Broekema; launchpad bug lp#489698).
1479 * bug fix: some minor code rearrangements to reenable warning-free building
1480 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1481 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1483 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1486 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1487 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1488 * improvement: support O_LARGEFILE access to files larger than 2GB on
1489 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1490 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1491 definitions for methods specializing on the passed class itself.
1492 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1493 definitions for methods specializing on the passed class itself, or on
1495 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1496 about itself during the build (e.g. for M-? in Slime), if this flag is
1497 enabled in customize-target-features.lisp. This will increase the core
1498 size by about 5-6mb, though, so it's mostly interesting to SBCL
1500 * new feature: various GENCGC tuning parameters have been experimentally
1501 documented and exported from SB-EXT. See documentation for details.
1502 * fixes and improvements related to Unicode and external formats:
1503 ** the Unicode character database has been upgraded to the
1504 Unicode 5.2 standard, giving names and properties to a number of new
1505 characters, and providing a few extra characters with case
1507 ** improvement: restarts for providing replacement input/output on coding
1508 errors for fd-stream external formats.
1509 ** improvement: where :<encoding> is a keyword corresponding to an
1510 external format the system supports, it is now possible to specify
1511 (:<encoding> :replacement <character>) as an external format which will
1512 automatically substitute <character> on encoding or decoding errors for
1513 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1515 ** improvement: the file streams underlying the standard streams (such as
1516 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1517 which uses the replacement mechanism to handle encoding errors,
1518 preventing various infinite error chains and unrecoverable I/O
1520 ** minor incompatible change: the utf-8 external format now correctly
1521 refuses to encode Lisp characters in the surrogate range (char-codes
1522 between #xd800 and #xdfff).
1523 ** fix a typo preventing conversion of strings into octet vectors
1524 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1526 ** fix a bug in the octet multibyte handling of decoding errors and the
1527 USE-VALUE restart. (launchpad bug lp#314939)
1528 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1529 restart on fd-stream decoding errors.
1530 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1531 error is near the end of file.
1532 ** fix a double-error case in unibyte octet conversions, when the first
1533 use of USE-VALUE is ignored.
1534 ** fix bugs in handling of undefined code points in unibyte encodings.
1535 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1536 streams after an UNREAD-CHAR.
1537 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1538 object is allocated in a boxed region of dynamic space.
1539 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1540 fork with multiple Lisp threads running is made, instead of going
1541 ahead with unpredictable consequences. (reported by Leslie Polzer)
1542 * bug fix: uses of slot accessors on specialized method parameters within
1543 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1544 error while finalizing the class. This fix may cause classes with slot
1545 accessors to be finalized later than previously. (reported by Lars Rune
1546 Nøstdal; launchpad bug lp#473699)
1547 * bug fix: restore buildability on the MIPS platform. (regression from
1548 1.0.30.38, reported by Samium Gromoff)
1549 * bug fix: inspecting closures is less likely to fail with a type error.
1550 * bug fix: no timer starvation when setting the system clock back.
1551 (launchpad bug lp#460283)
1552 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1553 standard pprint dispatch table as specified by CLHS.
1554 * bug fix: give CLISP a hint about a type declaration to enable it to build
1555 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1557 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1558 (reported by Attila Lendvai; launchpad bug lp#310132)
1559 * bug fix: distinguish in type specifiers between arrays that might be
1560 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1561 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1562 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1563 * bug fix: setting the value of a symbol-macro within a method in the
1564 presence of type declarations works properly again. (reported by Iban
1565 Hatchondo; launchpad bug lp#485019)
1567 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1568 * optimization: faster FIND and POSITION on strings of unknown element type
1569 in high SPEED policies. (thanks to Karol Swietlicki)
1570 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1572 * improvement: better error signalling for bogus parameter specializer names
1573 in DEFMETHOD forms (reported by Pluijzer)
1574 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1576 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1578 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1579 removes previous default initargs (reported by Lars Rune Nøstdal and
1581 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1582 lambda-lists. (reported by Peter Seibel)
1583 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1584 correctly when starting from an executable core without saved runtime
1585 options (reported by Faré Rideau, thanks to Zach Beane)
1586 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1587 an optimization note instead. (reported by Martin Cracauer)
1588 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1589 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1590 new process group if it doesn't need to share stdin with the sbcl
1591 process. (thanks to Leslie Polzer)
1592 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1593 (reported by Stanislaw Halik)
1595 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1596 * improvement: stack allocation is should now be possible in all nested
1597 inlining cases: failure to stack allocate when equivalent code is manually
1598 open coded is now considered a bug.
1599 * improvements related to Unicode:
1600 ** the Unicode character database has been upgraded to the
1601 Unicode 5.1 standard, giving names and properties to a number of new
1602 characters, and providing a few extra characters with case
1604 ** the system now recognizes and produces names for Unicode Hangul
1605 syllable characters.
1606 ** the EBCDIC-US external-format is now supported for octet operations
1607 (as well as for stream operations).
1608 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1609 be used to output toplevel compile-time effects into a separate .CFASL
1611 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1612 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1614 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1616 * optimization: division of floating point numbers by constants uses
1617 multiplication by reciprocal when an exact reciprocal exists.
1618 * optimization: multiplication of single- and double-floats floats by
1619 constant two has been optimized.
1620 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1621 sufficient type information is available. (thanks to Leslie Polzer)
1622 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1623 known structure objects are as efficient as defstruct generated accessors.
1624 * optimization: unused vector creation can now be optimized away.
1625 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1626 * improvement: a STYLE-WARNING is signalled when a generic function
1627 clobbers an earlier FTYPE proclamation.
1628 * improvement: the compiler is able to track the effective type of
1629 generic function across method addition and removal even in the
1630 absence of an explicit DEFGENERIC.
1631 * improvement: DESCRIBE now reports on symbols naming undefined
1632 but assumed or declared function as well.
1633 * improvement: recompilation of systems using SB-GROVEL now works
1634 (thanks to Leslie Polzer)
1635 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1636 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1638 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1639 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1640 well as user defined declaration names.
1641 ** VARIABLE-INFORMATION is now aware of alien variables.
1642 * improvement: improved address space layout on OpenBSD (thanks to Josh
1644 * improvement: pretty-printing of various Lisp forms has been improved
1645 (thanks to Tobias Rittweiler)
1646 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1647 unused were deleted in safe code. (reported by John Fremlin)
1648 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1650 * bug fix: some out-of-line array predicates were missing (reported by
1652 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1654 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1655 (thanks to Larry D'Anna)
1656 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1657 as well. (reported by Josh Elsasser)
1658 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1659 leading to possible attempts to delete the same file twice. See docstring
1660 on DELETE-FILE for details. (reported by John Fremlin)
1661 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1662 designator argument, rather than its truename. (reported by Luis
1664 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1665 information about some array types. (thanks to Luis Oliveira)
1666 * bug fix: moderately complex combinations of inline expansions could
1667 be miscompiled if the result was declared to be dynamic extent.
1668 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1669 form (+ <variable> <integer>) were miscompiled under certain
1671 * bug fix: in some cases no compiler note about failure to stack allocate
1672 was emitted, even if the objects were in fact heap allocated.
1673 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1674 allocation could cause objects users might reasonably expect to
1675 be heap allocated to be stack allocated.
1676 * bug fix: DESCRIBE signalled an error for generic functions under
1677 certain circumstances. (thanks to Leslie Polzer)
1678 * bug fix: Fixed spelling of an error message.
1680 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1681 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1682 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1683 of SB-THREAD:THREAD-ERROR-THREAD.
1684 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1685 * new feature: docstrings for local and anonymous functions are no longer
1686 discarded. (thanks to Leslie Polzer)
1687 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1688 values in other threads.
1689 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1690 about object allocation.
1691 * optimization: division of a real float by a complex float is implemented
1692 with a specialised code sequence.
1693 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1694 keywords is an order of magnitude faster.
1695 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1696 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1697 methods, and similarly for non-standard metaclass classes as long as there
1698 are no methods additional on MAKE-INSTANCE.
1699 * optimization: more efficient type-checks for FIXNUMs when the value
1700 is known to be a signed word on x86 and x86-64.
1701 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1702 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1704 * optimization: compiler is smarter about delegating argument type checks to
1706 * optimization: several character functions are now compiled somewhat more
1707 efficiently. (reported by Lynn Quam)
1708 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1709 * improvement: less unsafe constant folding in floating point arithmetic,
1710 especially for mixed complex/real -float operations.
1711 * optimization: constant double and single floats are stored in native
1712 unboxed format on x86[-64].
1713 * optimization: smarter code for arithmetic operations with constant floats,
1714 complex floats, or integers on x86[-64].
1715 * optimization: smarter code for conjugate/multiplication of float complexes
1716 and abs/negate of floats on x86-64.
1717 * optimization: more efficient complex float and real float operations on
1719 * improvement: complex float division is slightly more stable.
1720 * improvement: DESCRIBE output has been reworked to be easier to read and
1721 contains more pertinent information.
1722 * improvement: failure to provide requested stack allocation compiler notes
1723 provided in all cases (requested stack allocation not happening without a
1724 note being issued is now considered a bug.)
1725 * bug fix: SB-POSIX exports the documented types and functions
1726 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1727 types. (reported by "abhi")
1728 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1729 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1730 (thanks to Paul Khuong)
1731 * bug fix: looping around HANDLER-CASE could silently consume stack space
1732 on each iteration. (reported by "foobar")
1733 * bug fix: better error signalling when calls to functions seeking elements
1734 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1735 (reported by Tobias Rittweiler)
1736 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1737 directory components now works as it used to. (various prolems reported by
1738 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1739 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1740 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1741 * bug fix: bogus undefined variable warnings from fopcompiled references to
1742 global variables. (thanks to Lars Rune Nøstdal)
1743 * bug fix: foreign function names should now appear in backtraces on
1744 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1745 * bug fix: SETF compiler macro documentation strings are not discarded
1747 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1748 (thanks to Alex Plotnick)
1749 * bug fix: SLEEP accepts large integer arguments, truncating them to
1750 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1751 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1752 * bug fix: compiler notes for expensive slot type checks could be emitted
1753 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1755 changes in sbcl-1.0.29 relative to 1.0.28:
1756 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1757 https://bugs.launchpad.net/sbcl
1758 Bugs can be reported directly there, or by sending email to
1759 sbcl-bugs@lists.sourceforge.net
1760 (no subscription required.)
1761 * minor incompatible change: under weak type checking policy integer
1762 types are weakened less aggressively.
1763 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1764 allowed to return, which causes SBCL to quit with exit status 0. Previously
1765 if the function returned with a small integer return value, that value
1766 was accidentally reused as the exit status.
1767 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1768 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1769 :HASH-FUNCTION argument. Refer to user manual for details.
1770 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1772 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1773 microseconds since the Unix epoch on all platforms.
1774 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1775 allows the compiler to safely elide boundedness checks for special
1777 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1778 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1779 efficiency measure for threaded platforms, but also valueable in
1781 * new feature: UNC pathnames are now understood by the system on Windows.
1782 * optimization: the compiler uses a specialized version of FILL when the
1783 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1785 * optimization: accesses to potentially non-simple arrays where element type
1786 is known are 50% faster.
1787 * optimization: compiler now generates faster array typechecking code.
1788 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1790 * optimization: multidimensional array accesses in the absence of type
1791 information regarding array rank are approximately 10% faster due to
1792 open coding of ARRAY-RANK.
1793 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1794 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1796 * optimization: result of call to VECTOR can now be stack allocated.
1797 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1798 as long as the resulting array is one-dimensional and has a known
1799 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1800 length of the list matches the known length of the vector does not
1801 allocate the list as an intermediate step. Ditto for VECTOR and simple
1803 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1804 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1805 known element type, and is known to be simple and one dimensional.
1806 * improvement: SBCL now emits a compiler note where stack allocation was
1807 requested but could not be provided (not in all cases, unfortunately)
1808 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1809 * improvement: pretty-printing loop has been implemented properly. (thanks
1810 to Tobias Rittweiler)
1811 * documentation: CLOS slot typechecing policy has been documented.
1812 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1813 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1814 pointer, leading to memory faults. (thanks to Bart Botta)
1815 * bug fix: better floating point exception handling on x86/OpenBSD.
1816 (thanks to Josh Elsasser)
1817 * bug fix: exit status from QUIT when called under --script was lost
1818 (reported by Hubert Kauker)
1819 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1820 same implementation of FILL to initialize the array, even if a more
1821 efficient one was available (reported by Stas Boukarev, thanks to
1823 * bug fix: potential miscompilation of array stack allocation on x86 and
1824 x86-64. (reported by Time Tossavainen)
1825 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1826 result in their subforms being treated as top level forms. (reported by
1828 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1829 than a machine register could leave garbage in the high bits of the
1830 result register (bug 316325).
1831 * bug fix: disable address space randomization Linux/x86-64 as well,
1832 not just x86-64. (reported by Ken Olum)
1833 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1834 generate incorrect code.
1835 * bug fix: #201; type inference for CONS and ARRAY types could derive
1836 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1837 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1838 could not be assigned to or bound with PROGV. (reported by Lorenz
1840 * bug fix: the value of CL:- in the inspector was the previous expression
1841 evaluated rather than the expression being evaluated.
1842 * bug fix: constants can no longer be locally declared special.
1843 * bug fix: signals delivered to threads started from foreign land (read:
1844 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1845 thread by blocking all signals and resignalling.
1846 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1847 from :INITFORM, if any.
1849 changes in sbcl-1.0.28 relative to 1.0.27:
1850 * a number of bugs in cross-compilation have been fixed, with the ultimate
1851 result that building under (at least) clisp should be much more reliable.
1852 * minor incompatible changes: echo-streams now propagate unread-char to the
1853 underlying input stream, and no longer permit unreading more than one
1855 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1856 frames, allowing for instance more reliable backtraces.
1857 * improvement: the debugger REPL can now reference lexical variables
1858 by name directly for code compiled with (DEBUG 3).
1859 * improvement: errors from malformed declarations now have better source
1860 paths associated with them. (thanks to Tobias Rittweiler)
1861 * optimization: faster local calls on x86/x86-64
1862 * bug fix: some error messages for out-of-bound array indexes confused the
1863 index and the bound. (thanks to Stas Boukarev)
1864 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1866 * bug fix: running regressions tests in shells without OSTYPE set now works.
1867 (reported by Harald Hanche-Olsen)
1868 * bug fix: more robust static space exhaustion signalling from
1869 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1870 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1871 docstring away instead of storing it under names such as (LAMBDA (X)).
1872 (reported by Leslie Polzer)
1873 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1874 (thanks to Ole Arndt for the patch)
1875 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1876 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1877 potentially-invalid effective methods in its cache.
1878 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1879 instances as well (thanks to Paul Khuong)
1880 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1881 SB-POSIX:WAITPID and their C equivalents.
1882 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1884 changes in sbcl-1.0.27 relative to 1.0.26:
1885 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1886 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1887 * improvement: the system either recovers from stack exhaustion or dies
1888 properly as opposed to leaving the user uncertain of whether the handler
1889 trampled on some random memory next to the stack or having to rely on
1890 --lose-on-corruption (which is still a good idea to use in production
1891 because stack exhaustion can happen in signal handlers which will likely
1893 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1894 1.0.25.37, reported by Harald Hanche-Olsen)
1895 * bug fix: work around signal delivery bug in darwin (regression from
1896 1.0.25.44, reported by Sidney Markowitz)
1897 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1899 changes in sbcl-1.0.26 relative to 1.0.25:
1900 * incompatible change: an interruption (be it a function passed to
1901 INTERRUPT-THREAD or a timer function) runs in an environment where
1902 interrupts can be enabled. The interruption can use
1903 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1904 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1905 potentially running out of stack. Keep in mind that in the absence
1906 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1907 acquiring a lock can enable interrupts.
1908 * incompatible change: GC-OFF and GC-ON are removed, as they were
1909 always unsafe. Use WITHOUT-GCING instead.
1910 * new feature: runtime option --disable-ldb
1911 * new feature: runtime option --lose-on-corruption to die at the
1912 slightest hint of possibly non-recoverable errors: running out of
1913 memory, stack, alien stack, binding stack, encountering a memory
1914 fault, etc. In the absence of --lose-on-corruption a warning is
1916 * enhancement: detect binding stack exhaustion
1917 * enhancement: detect alien stack exhaustion on x86/x86-64
1918 * improvement: generally more stable and reliable interrupt handling
1919 * improvement: there is a per thread interruption queue,
1920 interruptions are executed in order of arrival
1921 * improvement: a repeating timer reschedules itself when the it has
1922 finished, but expiration times are spaced equally. If an
1923 expiration time is in the past it will trigger after a short grace
1924 period that may give a chance to other things to run.
1925 * optimization: slightly faster gc on multithreaded builds
1926 * optimization: faster WITHOUT-GCING
1927 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1928 important locks so that the debugger/handler doesn't produce
1929 recursive errors or deadlock.
1930 * bug fix: real-time signals are not used anymore, so no more
1931 hanging when the system wide real-time signal queue gets full.
1932 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1934 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1935 * bug fix: fix random memory faults related to interrupts on alpha
1936 * bug fix: fix random memory faults related to interrupts on sparc
1937 * bug fix: fix deadlocks related to starting threads
1938 * bug fix: fix deadlines on locks on futex platforms
1939 * bug fix: restore errno in signal handlers
1940 * bug fix: fix deadlocks related to hash tables
1941 * bug fix: fix deadlocks in pcl
1943 changes in sbcl-1.0.25 relative to 1.0.24:
1944 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1945 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1946 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1947 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1948 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1949 better name and does not return values so stale on multiprocessor systems.
1950 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1952 * improvement: unithread builds keep track of MUTEX-VALUE.
1953 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1954 stream anymore making it thread safe to have a concurrent reader and
1955 a writer, for instance, in a pipe.
1956 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1957 arguments, making compiler-macros for SETF-functions able to inspect
1958 their constant arguments.
1959 * improvement: COMPILE-FILE reports times with millisecond accuracy
1960 (thanks to Luis Oliveira)
1961 * optimization: CHAR-CODE type derivation has been improved, making
1962 TYPEP elimination on subtypes of CHARACTER work better. (reported
1963 by Tobias Rittweiler, patch by Paul Khuong)
1964 * bug fix: setting alien structure fields of type struct by value now
1965 computes the right offset for the memory copy.
1966 * bug fix: compilation problem involving inlined calls to aliens with
1967 result type VOID. (reported by Ken Olum)
1968 * bug fix: #235a; sequential inline expasion in different policies no
1969 longer reuses the functional from the previous expansion site.
1970 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1971 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1972 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1973 cause an implied type redefinition. Regression from 1.0.21.29.
1974 * bug fix: sign-extension of small signed return values now works with C
1975 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1976 * improvements to the Windows port:
1977 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1978 Westfold, thanks to Rudi Schlatte)
1980 changes in sbcl-1.0.24 relative to 1.0.23:
1981 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1982 vector of a multidimensional SIMPLE-ARRAY.
1983 * new feature: the system now signals a continuable error if standard
1984 readtable modification is attempted. (thanks to Tobias Rittweiler)
1985 * new feature: DIRECTORY has been extended with a non-standard keyword
1986 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1987 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1988 has been robustified and documented better. (thanks to Robert Goldman)
1989 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1990 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1991 * tradeoff: constant FORMAT control strings are now compiled unless
1992 SPACE > SPEED (previously only when SPEED > SPACE.)
1993 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1995 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1997 * bug fix: lexical type declarations are now correctly reported by
1998 SB-CLTL2. (reported by Larry D'Anna)
1999 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2000 using UTF-8 as external format. (thanks to Luis Oliveira)
2001 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2002 are signalled correctly. (thanks to Stas Boukarev)
2003 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2004 designator. (thanks to Tobias Rittweiler)
2005 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2006 designator, and returns T instead of the function. (thanks to
2008 * bug fix: direct superclasses of STANDARD-CLASS and
2009 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2010 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2011 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2012 when no class with the named slot yet exists no longer causes a
2013 compile-time style-warning.
2014 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2015 in safe code. (reported by Didier Verna)
2016 * bug fix: #430; nested structure constructors can stack allocate.
2017 * bug fix: on some 64-bit platforms dynamic space size was truncated
2018 to #xffff0000 bytes. (reported by Benjamin Lambert)
2019 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2020 REPL unusable. (reported by Daniel Herring)
2021 * bug fix: return values of READ-SEQUENCE did not take :START into
2022 account on file streams, regressions since 1.0.12.22. (reported by
2023 Thomas Russ, patch by Paul Khuong)
2024 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2025 method specializer used to confuse permuation vector optimization.
2026 * bug fix: system inserted bogus implicit type declarations for local
2027 special variables in DEFMETHOD bodies.
2028 * bug fix: #354; duplicated frames in backtraces due to
2029 non-tail-call-optimized XEPs to functions with return type NIL
2031 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2032 initializes structure object slots according to DEFSTRUCT initforms,
2033 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2034 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2035 (reported by Bruno Haible and Stephen Wilson)
2036 * bug fix: #395; fill-pointer output streams used now support
2037 element-type BASE-CHAR as well.
2038 * bug fix: compiler error when attempting to derive return value of
2039 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2041 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2043 * bug fix: Mac OS X binaries should now be portable between Leopard
2046 changes in sbcl-1.0.23 relative to 1.0.22:
2047 * enhancement: when disassembling method functions, disassembly
2048 for the associated fast function is also produced.
2049 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2051 * optimization: printing with *PRINT-PRETTY* true is now more
2052 efficient as long as the object being printed doesn't require
2053 special handling by the pretty printer.
2054 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2055 now interact correctly with type declarations.
2056 * partial bug fix: PCL detects infinite recursion during wrapper
2057 validation. (thanks to Attila Lendvai)
2058 * bug fix: #426; nested function calls are inlined properly.
2059 Previously if FOO was an inline function, in calls of the form
2060 (FOO (FOO ...)) the outer call was not inlined.
2061 * bug fix: long long arguments passed in registers to alien
2062 functions on PowerPC Linux and NetBSD are now handled correctly
2063 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2065 changes in sbcl-1.0.22 relative to 1.0.21:
2066 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2067 for the shared object in the current directory, but passes the native
2068 namestring of the designated pathname to the operation system's shared
2069 object loading function as-it.
2070 * minor incompatible change: --disable-debugger toplevel option now takes
2071 effect before processing of initialization files and --eval or --load
2073 * new feature: new commandline argument: --script, which supports
2074 shebang lines. See documentation for details. (based on work by
2076 * new feature: SAVE-LISP-AND-DIE can save current values of
2077 --dynamic-space-size and --control-stack-size in the executable core,
2078 causing it to skip normal runtime option processing. See documentation
2079 for details. (thanks to Zach Beane)
2080 * enhancement: inoccous calls to EVAL or generic functions dispatching
2081 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2082 * enhancement: the system no longer resignals errors from --load and
2083 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2084 associated with the original error to be lost. (thanks to Ariel
2086 * enhancement: :DONT-SAVE keyword argument has been added to
2087 LOAD-SHARED-OBJECT for controlling interaction with
2088 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2089 the effects of an earlier LOAD-SHARED-OBJECT call.
2090 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2091 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2092 provided. (reported by Cedric St-Jean)
2093 * bug fix: circularity handling in the reader did not treat raw
2094 structure slots correctly. (reported by Cedric St-Jean)
2095 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2096 file descriptors when there were none.
2097 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2098 was broken. (reporteed by Willem Broekema)
2099 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2100 pathnames without a directory.
2101 * bug fix: COMPILE-FILE did not warn about undefined variable
2102 references at toplevel, and LOAD of the resulting fasl did
2103 not signal an error.
2104 * bug fix: functions with non-required arguments used to end up with
2105 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2106 * bug fix: redefining a function with non-required arguments didn't
2107 update the system's knowledge about its call signature properly.
2108 * bug fix: fixed #431; incompatible alien record type redefinitions
2109 are detected and handled. (reported by Neil Haven)
2110 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2111 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2113 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2114 after alien stack frames.
2115 * bug fix: strings passed to mk{s,d}temp lacked null termination
2117 changes in sbcl-1.0.21 relative to 1.0.20:
2118 * new feature: the compiler is able to track the effective type of a
2119 generic function across method addition and removal.
2120 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2121 appropriately typed structure slots without locking.
2122 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2123 information like those gathered by TIME using a programming-friendly
2125 * new feature: TIME reports time taken even if the form performs a
2126 non-local transfer of control.
2127 * enhancement: reduced conservativism on GENCGC platforms: on
2128 average 45% less pages pinned (measured from SBCL self build).
2129 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2130 mutate constant symbols or violate declaimed type of the symbol.
2131 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2132 sleeping on the semaphore in heavily contested semaphores.
2133 * bug fix: semaphores and condition variables were not interrupt
2135 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2136 owned by other threads anymore.
2137 * bug fix: FIND on lists called KEY outside the specified
2138 subsequence. (reported by budden)
2139 * bug fix: LOG doesn't use single-float intermediate results when
2140 given mixed integer and double-float arguments, leading to better
2141 precision. (reported by Bob Felts)
2142 * bug fix: LOG with base zero returned values of inconsistent type.
2144 changes in sbcl-1.0.20 relative to 1.0.19:
2145 * minor incompatible change: OPTIMIZE qualities
2146 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2147 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2148 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2149 * documentation: some slot access efficiency guidelines have been
2150 added to the user manual.
2151 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2152 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2153 as ASSOC and MEMEBER.
2154 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2155 to more efficient EQ-comparison versions more often.
2156 * optimization: enhanced derivation of DOLIST iteration variable type
2158 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2160 * optimization: runtime lookup of function definitions can be
2161 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2162 * optimization: compiler is able to derive the return type of
2163 (AREF (THE STRING X) Y) as being CHARACTER.
2164 * optimization: CLRHASH on empty hash-tables no longer does pointless
2165 work. (thanks to Alec Berryman)
2166 * optimization: REPLACE deftransforms don't punt when :START1 or
2168 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2169 no longer emits a code deletion note. (reported by Andrew
2171 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2172 functions with an odd number of &OPTIONAL arguments, a &REST
2173 argument, and one or more &KEY arguments at the call site.
2174 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2175 arguments appeared at call sites as well.
2176 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2177 READ-LINE &co can no longer read from them afterwards. (reported
2179 * bug fix: fixed #427: unused local aliens no longer cause compiler
2180 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2182 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2183 alien-stack leakage. (reported by Andy Hefner)
2184 * bug fix: PROGV signals an error when an attempt to violate declared
2185 type of a variable or bind a constant is made.
2186 * bug fix: SET signals an error when an attempt to violate declared
2187 type of a variable is made.
2188 * bug fix: restart computation during the execution of a restart
2189 test function no longer causes infinite recursion. (reported by
2191 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2192 signals an error. (thanks to Pierre Mai)
2193 * bug fix: EXPORT left symbol unexported in conflict situations.
2194 (thanks to Michael Weber)
2195 * bug fix: correctly handle name conflicts involving CL:NIL.
2196 (thanks to Michael Weber)
2197 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2198 conflicts arising from USEing package with conflicting symbols
2199 correctly. (thanks to Michael Weber)
2201 changes in sbcl-1.0.19 relative to 1.0.18:
2202 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2203 warnings that go otherwise unhandled will be muffled if they are
2204 of the type that's the value of this variable.
2205 * optimization: stack allocation is slightly more efficient on x86
2207 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2208 where a raw slot always is initialized using the initform whose
2209 type is not know sufficiently well a compile-time are now compiled
2210 correctly. (reported by John Morrison)
2211 * bug fix: compiler no longer makes erronous assumptions in the
2212 presence of non-foldable SATISFIES types.
2213 * bug fix: stack analysis missed cleanups of dynamic-extent
2214 arguments in non-let-converted calls to local functions.
2215 * improvements to the Windows port:
2216 ** adjusted address spaces for building on both Win32 and
2217 Win64. (thanks for John Connors)
2218 * fixed some bugs revealed by Paul Dietz' test suite:
2219 ** interval arithmetic during type derivation used inexact integer
2220 to single-float coercions.
2221 ** arithmetic operations involving large integers and single
2222 floats give the same results in compiled and interpreted code.
2223 ** deriving the result type of COERCE no longer signals an error
2224 if the derived type of the second argument is a MEMBER type
2225 containing invalid type specifiers.
2226 ** ADJOIN with constant NIL as second argument works correctly.
2227 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2229 changes in sbcl-1.0.18 relative to 1.0.17:
2230 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2231 profiles only the current thread.
2232 * minor incompatible change: changes to SYMBOL-VALUE of constants
2233 defined with DEFCONSTANT now signal an error.
2234 * enhancement: SB-SPROF now has support for wallclock profiling,
2235 and is also able to profile specific threads. REPORT output
2236 has also additional sorting options.
2237 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2239 * optimization: structure allocation has been improved
2240 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2241 ** out of line constructors are ~10% faster.
2242 ** inline constructors are ~15% faster.
2243 ** inline constructors are capable of dynamic extent allocation
2244 (generally on x86 and x86-64, in some cases on other platforms
2246 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2248 * optimization: file compiler is now able to coalesce non-circular
2249 lists, non-base strings, and bit-vectors. Additionally, constants
2250 are never referenced through SYMBOL-VALUE at runtime.
2251 * optimization: code defining methods on PRINT-OBJECT (and other
2252 generic functions in the COMMON-LISP package) now loads faster.
2253 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2255 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2256 fasl is now deleted. (reported by Attila Lendvai)
2257 * bug fix: READ-LINE always returned NIL for the last line in files.
2258 (reported by Yoshinori Tahara)
2259 * bug fix: more accurate disassembly annotations of foreign function
2260 calls. (thanks to Andy Hefner)
2261 * bug fix: trimming non-simple strings and non-string string
2262 designators when the there is nothing to trim works properly.
2263 (thanks to James Knight)
2264 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2265 (thanks to Travis Cross)
2266 * fixed some bugs revealed by Paul Dietz' test suite:
2267 ** NIL is a valid function name (regression at 1.0.13.38)
2268 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2269 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2270 fill pointers properly (regression at 1.0.12.23)
2271 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2272 displacement indices properly (regression at 1.0.12.23)
2274 changes in sbcl-1.0.17 relative to 1.0.16:
2275 * temporary regression: user code can no longer allocate closure
2276 variable storage on stack, due to bug 419 without explicitly
2277 requesting it. Please consult sbcl-devel for advice if you need to
2278 use this feature in the meanwhile.
2279 * new feature: runtime argument --control-stack-size can be used to
2280 adjust thread default control stack size.
2281 * enhancement: improved TIME output
2282 ** all times are reported using the measured accuracy (milliseconds
2283 for real and GC times, microseconds for everything else.)
2284 ** processor cycle counts on x86 and x86-64.
2285 ** interpreted forms are counted for both evaluator modes.
2286 ** number of lambdas converted by the compiler is reported.
2287 ** CPU percentage report (computed from real and total run time.)
2288 ** more comprehensive run time reporting, using a condenced format
2289 ** interperted form, lambda, and page fault counts are omitted
2291 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2293 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2294 * optimization: two argument forms of LAST are upto ~10% faster
2295 in normal SPEED policies.
2296 * optimization: NCONC no longer needs to heap cons its &REST list
2297 in normal SPEED policies.
2298 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2299 to Sidney Markowitz)
2300 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2301 regression since 1.0.9.1. (thanks to Eric Marsden)
2302 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2303 since 1.0.15.36. (thanks to Paul Khuong)
2304 * bug fix: LAST when always returned the whole list when given a bignum
2305 as the second argument.
2306 * bug fix: dynamic extent allocation of nested lists and vectors
2307 could leak to otherwise accessible parts.
2308 * bug fix: invalid optimization of heap-allocated alien variable
2310 * bug fix: fasl header checking is less vulnerable to different
2311 platform word lengths.
2312 * bug fix: more correct assembler syntax for GNU binutils
2313 2.18.50.0.4 support. (thanks to Marijn Schouten)
2314 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2316 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2317 declarations) successfully. (reported by Attila Lendvai)
2319 changes in sbcl-1.0.16 relative to 1.0.15:
2320 * minor incompatible change: revert the changes to sb-posix's error
2321 signaling added in 1.0.14.
2322 * minor incompatible change: change PROBE-FILE back to returning
2323 NIL whenever we can't get a truename, as was the case before 1.0.14.
2324 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2325 inherits from ERROR instead of just CONDITION.
2326 * new feature: SB-INTROSPECT can provide source locations for instances
2327 as well. (thanks to Tobias Rittweiler)
2328 * optimization: binding special variables now generates smaller code
2329 on threaded platforms.
2330 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2331 and cases where no :TEST is given but the compiler can infer that
2332 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2333 * optimization: better LOGNOT on fixnums.
2334 * optimization: modular arithmetic for a particular requested width
2335 is implemented using a tagged representation unless a better
2336 representation is available.
2337 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2338 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2339 for wellformedness and returns a specialized vector. (reported by
2340 Francois-Rene Rideau)
2341 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2342 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2343 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2344 unscheduling timer at the same time as another timer fires.
2345 * bug fix: don't reschedule timers for dead threads.
2346 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2347 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2348 bogus errors if select() was interrupted.
2349 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2351 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2352 * enhancement: cleaner backtraces for interactive interrupts, as
2353 well as other cases where the interesting frames used to be
2354 obscured by interrupt handling frames.
2355 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2356 now supported, and tracing a whole package using (TRACE "FOO") now
2357 traces SETF-functions as well.
2358 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2359 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2360 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2361 * unreadably printed representation of hash-tables now includes
2363 * bug fix: partially fixed #188: type propagation from assignments
2364 is now more efficient.
2365 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2366 'DOUBLE-FLOAT) are not flushable.
2367 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2368 full address of the object, and none of the tag bits.
2369 * bug fix: readably printing hash-tables now respects other printer
2370 control variables. (reported by Cedric St-Jean)
2371 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2372 keyword with MAKE-HASH-TABLE.
2373 * bug fix: export SB-POSIX:MKSTEMP.
2374 * bug fix: SORT was not interrupt safe.
2375 * bug fix: XREF accounts for the last node of each basic-block as
2377 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2378 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2379 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2380 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2381 create obsolete instances in the case of redefinition or
2382 obsoletion of a superclass. (thanks to Andy Hefner)
2383 * bug fix: Support for the Alpha architecture has been revived; it had
2384 suffered somewhat from lack of maintenance since sbcl-1.0.
2385 * improvements to the Windows port:
2386 ** The system detects the codepage to use at startup, instead of
2387 using the value from the saved core. (thanks to Kei Suzuki)
2389 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2390 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2391 (see documentation for details.)
2392 * revived support for OpenBSD (contributed by Josh Elsasser)
2393 * partially fixed bug #108: ROOM no longer suffers from occasional
2394 (AVER (SAP= CURRENT END)) failures.
2395 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2396 bodies no longer cause a WARNING to be signalled. (reported by
2398 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2399 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2400 the bug in TRUNCATE.) (reported by Michael Weber)
2401 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2402 no samples. (reported by Andy Hefner)
2403 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2404 no longer appear as (NIL ...) frames in backtraces.
2405 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2406 is now actually exported from SB-EXT as documented. (reported by
2408 * bug fix: sb-aclrepl now correctly understands how to inspect
2409 single-floats on 64-bit platforms where single-floats are not boxed.
2410 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2411 yet been finalized. (reported by Levente Meszaros)
2412 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2413 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2414 SBCL-specific optimize qualities.
2416 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2417 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2418 an executable in the search path, and does so in the child
2419 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2420 been removed; it can be found in the CVS history, for somebody who
2421 needs that search behavior (see the manual).
2422 * minor incompatible change: compiler policy re. weakening type
2423 checks has changed: now type checks are weakened only if SAFETY < 2
2425 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2426 unparsing of directory pathnames as files. Analogously,
2427 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2428 filename to parse into a directory pathname.
2429 * enhancement: implicit generic function creation now signals a
2430 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2431 users can bind handlers for and muffle around calls to LOAD.
2432 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2433 to be used (using the default stream external format), and allows
2434 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2435 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2436 strings and vectors whose element-type or simplicity is not fully
2437 known at compile-time.
2438 * optimization: STRING-TRIM and related functions no longer allocate
2439 a new string when no trimming needs to be performed. These functions
2440 are also faster than before when the input string has been declared
2442 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2443 * optimization: READ-LINE is significantly faster for files containing
2445 * optimization: non-open coded uses of character comparison operators
2446 (e.g. char=) no longer cons when called with more than one parameter
2447 on platforms supporting dynamic-extent allocation.
2448 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2449 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2450 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2452 * bug fix: some sequence functions elided bounds checking when
2454 * bug fix: too liberal weakening of union-type checks when SPEED >
2456 * bug fix: more bogus fixnum declarations in ROOM implementation
2459 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2460 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2461 :SYNCHRONIZED argument, which makes the hash-table safe for
2462 concurrent accesses (but not iteration.) See also:
2463 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2464 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2465 * optimization: CONCATENATE on strings is an order of magnitude faster
2466 in code compiled with (> SPEED SPACE).
2467 * optimization: SUBSEQ is ~50% faster on lists.
2468 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2469 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2470 END is smaller then START.
2471 * bug fix: SB-PROFILE will no longer report extra consing for nested
2472 calls to profiled functions.
2473 * bug fix: ROOM implementation had bogus fixnum declarations which
2474 could cause type-errors when calling ROOM on large images.
2475 * bug fix: if file compilation is aborted, the partial fasl is now
2476 deleted, and COMPILE-FILE returns NIL as the primary value.
2477 * bug fix: number of thread safety issues relating to SBCL's internal
2478 hash-table usage have been fixed.
2479 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2480 be returned from its body when the values were being returned
2481 using unknown-values return convection and the W-P-O was wrapped
2482 inside an UNWIND-PROTECT.
2483 * bug fix: sb-posix should now compile again under Windows, enabling
2484 slime to work again.
2486 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2487 * incompatible change: hash-table accessor functions are no longer
2488 automatically protected by locks. Concurrent accesses on the same hash-table
2489 from multiple threads can give inconsistent results or even corrupt the
2490 hash-table completely. Multi-threaded applications should do their own
2491 locking at the correct granularity. In the current implementation it is
2492 still safe to have multiple readers access the same table, but it's not
2493 guaranteed that this property will be maintained in future releases.
2494 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2495 and will signal an error at runtime.
2496 * enhancement: SB-THREAD package now exports a semaphore interface.
2497 * enhancement: CONS can now stack-allocate on x86 and
2498 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2500 * enhancement: nested lists can now be stack allocated on
2501 platforms providing stack allocation support.
2502 * enhancement: dynamic-extent support has been extended to support
2503 cases where there are multiple possible sources for the stack
2505 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2506 if the mutex is uncontested on Linux.
2507 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2508 as specified by the CLHS. (thanks to Tobias Rittweiler)
2509 * bug fix: NaN comparison now works on x86-64.
2510 * bug fix: CLOSE :ABORT T on a stream with pending output now
2512 * bug fix: instances of non-standard metaclasses using standard
2513 instance structure protocol sometimes missed the slot type checks
2515 * bug fix: known functions can be inlined in high-debug code.
2517 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2518 * minor incompatible change: the MSI installer on Windows no longer
2519 associates .lisp and .fasl files with the installed SBCL.
2520 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2521 on Windows. (thanks to Luis Oliviera)
2522 * new feature: SB-CLTL2 contrib module now implements
2523 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2524 * optimization: scavenging weak pointers is now more efficient,
2525 requiring O(1) instead of O(N) per weak pointer to identify
2526 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2527 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2528 method bodies using constant slot-names when the first argument is
2529 a specializer parameter for the method.
2530 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2531 names, when the class of the instance is a direct instance
2532 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2533 as slow as the constant slot-name case.)
2534 * optimization: member type construction is now O(N) instead
2536 * optimization: UNION and NUNION are now O(N+M) for large
2537 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2539 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2540 now more readable in environments like Slime which display it.
2541 (thanks to Tobias C. Rittweiler)
2542 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2543 was able to infer the correct argument type for the object on which
2544 the CAS operation was being performed.
2545 * bug fix: copy propagation interfered with parallel assignment
2546 semantics in local calls. (reported by Paul Khuong)
2547 * bug fix: the signed modular fixnum shift compiled to wrong code on
2548 x86 and x86-64. (spotted by a slight modification to some of
2551 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2552 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2553 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2554 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2556 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2557 and generic function now print the object identity for anonymous
2558 instances. (thanks to Attila Lendvai)
2559 * enhancement: as an extension to MOP, SBCL now supports SETF of
2560 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2561 (thanks to Attila Lendvai)
2562 * enhancement: sb-cover has an alternate annotation mode which puts
2563 the form annotations at the car of the form, instead of annotating
2564 it completely. The benefit of this mode is that it shows better
2565 which forms were instrumented by the compiler.
2566 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2567 by printer control variables. (reported by Dan Corkill)
2568 * bug fix: system leaked memory when delayed output was performed by
2569 the OS in smaller chunks then expected. (thanks to David Smith)
2570 * bug fix: system leaked memory when file streams were not closed
2572 * bug fix: large objects written to slow streams that were modified
2573 after the write could end up with the modified state written to
2574 the underlying file descriptor.
2575 * bug fix: multiple threads operating in parallel on the same stream
2576 could cause buffer-overflows.
2577 * bug fix: source location information is stored correctly
2578 (broken since 1.0.6). This bug would generally show up as the
2579 Slime debugger highlighting the wrong form when the sldb-show-source
2581 * bug fix: Branch forms are again annotated as branches in the sb-cover
2583 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2584 on x86-64. (reported by Gregory Vanuxem)
2585 * bug fix: EQUALP could return wrong results for structures with raw
2586 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2587 word). (reported by Vjacheslav Fyodorov)
2588 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2591 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2592 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2593 atomic compare-and-swap operations on threaded platforms.
2594 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2595 allows assigning a global minimum value to optimization qualities
2596 (overriding proclamations and declarations).
2597 * enhancement: closed over variables can be stack-allocated on x86
2599 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2601 * optimization: slot definition lookup is now O(1). This speeds up
2602 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2603 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2604 * optimization: ASSOC and MEMBER can now be open-coded for all
2605 combinations of keyword arguments when second argument is constant
2606 and SPEED >= SPACE. In other cases a specialized version is
2608 * bug fix: using obsoleted structure instances with TYPEP and
2609 generic functions now signals a sensible error.
2610 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2611 (reported by Kristoffer Kvello)
2612 * bug fix: backtrace construction is now more careful when making
2613 lisp-objects from pointers on the stack, to avoid creating bogus
2614 objects that can be seen by the GC.
2615 * bug fix: defaulting of values in contexts expecting more than 7
2616 variables now works on x86-64. (reported by Christopher Laux)
2617 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2619 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2620 as the property-list of a symbol.
2621 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2622 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2623 situations requested, are once again file-compileable. (reported
2626 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2627 * MOP improvement: support for user-defined subclasses of
2628 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2629 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2630 the expansion of DEFMETHOD, is responsible for generating a form
2631 which creates a list of specializers when evaluated. Additional
2632 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2633 debugging and introspective support.
2634 * minor incompatible change: the (unsupported) spinlock interface
2635 has changed: free spinlock now has the value NIL, and a held spinlock
2636 has the owning thread as its value.
2637 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2638 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2640 * enhancement: name of a socket-stream is now "a socket" instead of
2641 "a constant string".
2642 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2643 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2644 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2645 for generic functions. (Thanks to Tobias C. Rittweiler)
2646 * optimization: bignum printing speed has been improved by 20-40%
2647 (depending on the bignum size.)
2648 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2650 * bug fix: the cache used by the CLOS to store precomputed effective
2651 methods, slot offsets, and constant return values is now thread and
2653 * bug fix: generic function dispatch function updating is now thread
2654 and interrupt safe (in the sense that the known issues have been
2656 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2657 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2658 * bug fix: asdf systems with dependencies to the SB-POSIX or
2659 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2660 * bug fix: interrupt safety of applicable method computation has been
2663 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2664 * new contrib: sb-cover, an experimental code coverage tool, is included
2665 as a contrib module.
2666 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2667 significantly faster.
2668 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2669 produce more efficient code on x86-64 if the compiler can determine
2670 that (+ INDEX <constant>) does not require a bounds check and FOO
2671 has an element type at least 8 bits wide.
2672 * enhancement: a new, experimental synchronous timeout facility is
2673 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2674 * enhancement: when a symbol name conflict error arises, the
2675 conflicting symbols are always printed with a package prefix.
2676 (thanks to Kevin Reid)
2677 * enhancement: stepping is now once again supported on the SPARC and
2678 MIPS platforms. (It is also now more likely to work on CheneyGC
2680 * enhancement: sb-sprof can now also track and report accurate call
2682 * bug fixes: the treatment of non-standard subclasses of
2683 SB-MOP:SPECIALIZER is more correct.
2684 * incompatible change: PURIFY no longer copies the data from the
2685 dynamic space into the static and read-only spaces on platforms
2686 that use the generational garbage collector
2687 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2689 * bug fix: GC race condition occasionally resulting in crashes with
2690 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2692 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2694 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2695 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2696 * bug fix: an asynchronous interrupt could previously leave the
2697 system running with GC inhibited.
2698 * bug fix: a DECLARE form evaluated at top-level now causes an error
2699 rather than silently (or verbosely) returning NIL.
2700 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2701 result in a error being signalled due to source form lookup errors.
2702 (reported by Peter Graves)
2704 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2705 * incompatible change: removed writer methods for host-ent-name,
2706 host-ent-addresses -- changing the values did not update the DNS
2708 * minor incompatible change: changed experimental JOIN-THREAD interface
2709 * documentation: the manual now lists reader and writer methods
2710 in class slot documentation sections. (thanks to Richard M Kreuter)
2711 * documentation: unwinding from asyncronous events has been
2712 documented as unsafe.
2713 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2714 in multithreaded application code.
2715 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2716 platforms. (thanks to James Anderson for the optimization hint)
2717 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2719 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2720 variants no longer cons.
2721 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2722 their NOT- variants no longer cons.
2723 * optimization: EQUAL hash tables no longer use SXHASH for objects
2724 of all data types, but instead use an EQL hash for types for which
2725 EQUAL is the same as EQL.
2726 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2727 are significantly faster.
2728 * optimization: new STRING-OUTPUT-STREAM implementation is much
2729 faster for large outputs and conses 30% less on average.
2730 * enhancement: XREF information is now collected for references made
2731 to global variables using SYMBOL-VALUE and a constant argument.
2732 * enhancement: SIGINT now causes a specific condition
2733 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2734 * bug fix: FILE-POSITION used to signal an error in some cases where
2735 ANSI requires it to return NIL.
2736 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2737 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2738 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2740 * bug fix: bad type declaration in the CLOS implementation has
2741 been fixed. (reported by James Anderson)
2742 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2743 (thanks to Lutz Euler)
2744 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2745 required by the CLHS. (reported by Samium Gromoff)
2746 * bug fix: dead unbound variable references now signal an error.
2747 (reported by Marco Monteiro)
2748 * bug fix: / with an unused value was being deleted in safe code.
2749 (thanks to Marco Monteiro and Kevin Reid)
2750 * bug fix: number of characters that can be written onto a single
2751 line in a file is unlimited.
2752 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2753 been fixed by inhibiting interrupts for when GC is disabled.
2754 * bug fix: some interrupt safety issues with GETHASH, (SETF
2755 GETHASH), CLRHASH and REMHASH have been fixed.
2756 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2757 specifier no longer causes infinite recursion.
2758 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2759 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2760 * bug fix: an &environment argument with the correct variable information
2761 is passed to macros that are expanded during byte compilation.
2762 (reported by Samium Gromoff)
2763 * bug fix: a logic error was causing the hash function for bignums to
2764 have excessive amounts of collisions. (reported by Faré Rideau)
2765 * bug fix: modifying the contents of an array could change the return
2766 value of SXHASH on that array, which is only allowed for strings
2767 and bit vectors. (bug introduced in 0.9.16)
2768 * improvement: the x86-64/darwin port now passes all tests (except
2769 for the debugger tests) but should still be considered
2770 experimental until this is fixed.
2771 * improvement: a style-warning is signaled for CASE (etc) clauses with
2772 duplicate keys. (thanks to Kevin Reid)
2773 * improvement: macos/x86 and macos/x86-64 now use mach exception
2774 handlers for dealing with illegal instructions (for trapping and
2775 error handling) and memory protection violations (for GC).
2777 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2778 * new platform: experimental support for x86-64/darwin (MacOS).
2779 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2780 and getnameinfo sockets functions are used instead of gethostbyaddr
2781 and gethostbyname, on platforms where the newer functions are available.
2782 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2784 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2785 don't print the startup banner, but behave as if --noinform was passed
2786 as a command line argument. (thanks to Kevin Reid)
2787 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2788 * optimization: code using alien values with undeclared types is much faster.
2789 * optimization: the compiler is now able to open code SEARCH in more cases.
2790 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2791 * bug fix: using standardized COMMON-LISP special variables as loop
2792 variables no longer signals bogus package lock violations. (reported
2794 * bug fix: declaring local loop variables to be of a range-limited type
2795 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2796 (reported by Andras Simon)
2797 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2798 bugs remain on x86-64.)
2799 * bug fix: the #= and ## reader macros now interact reasonably with
2800 funcallable instances.
2801 * bug fix: type-checks for function arguments were compiled using the
2802 compiler policy settings of the wrong lexical environment (in 1.0.2
2804 * bug fix: SHADOW accepts characters as string designators, as required
2805 by the spec (thanks to Eric Marsden)
2806 * bug fix: fixed GC safety issues when foreign functions are called with
2807 non-base strings as arguments
2808 * bug fix: more consistent error output for fatal-compiler-warnings, like
2810 * bug fix: functions with proper names were showing up as NIL in
2811 backtraces (reported by Edi Weitz, regression in 1.0.2)
2813 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2814 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2815 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2816 produce more efficient code on the x86 if the compiler can determine
2817 that (+ INDEX <constant>) does not require a bounds check and FOO
2818 has an element type at least 8 bits wide.
2819 * bug fix: references to undefined variables are handled the same way
2820 in toplevel forms as in the normal compiler
2821 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2823 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2824 (thanks to Jon Buller)
2825 * improvement: faster compilation times for complex functions
2826 * improvement: added readlink support to SB-POSIX (thanks to Richard
2829 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2830 * improvement: experimental support for mach exception handling on
2831 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2833 * improvement: support for GBK external format.
2834 (thanks to Chun Tian (binghe))
2835 * improvement: the debugger now displays variables that have been closed
2836 over, in code compiled with (DEBUG 2) or higher
2837 * improvement: support for executable cores on NetBSD (thanks to
2839 * new feature: added a RESTART-FRAME debugger command
2840 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2841 be used to provide an implementation for FILE-POSITION on Gray streams
2842 (thanks to Eric Marsden)
2843 * new feature: add syslog, openlog and closelog support to SB-POSIX
2844 (thanks to Richard Kreuter)
2845 * optimization: the function call overhead in code compiled with
2846 a high DEBUG optimization setting is significantly
2847 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2848 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2849 (thanks to Tony Martinez)
2850 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2851 evaluated once (reported by Kevin Reid)
2852 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2853 works again (thanks to Kilian Sprotte)
2854 * bug fix: an error is signaled for tagbodies with duplicate tags
2855 (thanks to Stephen Wilson)
2856 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2857 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2858 stack frames from alien callbacks.
2859 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2860 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2861 65k pages (thanks to David Woodhouse)
2862 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2864 changes in sbcl-1.0.1 relative to sbcl-1.0:
2865 * new platform: FreeBSD/x86-64, including support for threading.
2866 * new feature: the compiler stores cross-referencing information
2867 about function calls (who-calls), macroexpansion (who-macroexpands)
2868 and special variables (who-binds, who-sets, who-references) for code
2869 compiled with (< SPACE 3). This information is available through the
2870 sb-introspect contrib.
2871 * new feature: users may subclass SEQUENCE, and have instances of
2872 these classes interoperate with standard Common Lisp functions if
2873 a number of methods are defined. (This feature is experimental
2874 and the interface subject to change based on feedback from SBCL
2875 users and the general community)
2876 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2877 x86/x86-64, rather than the previous fixed depth of 8
2878 * improvement: another pthread back-end of mutex "pthread-futex".
2879 * bug fix: non-ascii command-line arguments are processed correctly
2880 (thanks to Yaroslav Kavenchuk)
2881 * bug fix: non-required arguments were not passed correctly when a method
2882 defined using DEFMETHOD was called from a mop-generated method using
2883 CALL-NEXT-METHOD (reported by Pascal Costanza)
2884 * bug fix: recursion is now permitted in accessors through
2885 SLOT-UNBOUND. (reported by Pascal Costanza)
2886 * bug fix: an error was signaled at startup if the HOME environment
2887 variable was defined, but had an empty value (reported by Peter Van Eynde)
2888 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2889 signal a PROGRAM-ERROR, not a BUG.
2890 * bug fix: SB-POSIX:READDIR works when built with large file support.
2891 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2893 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2894 for better automatic indentation support. (thanks to Matt Pillsbury)
2895 * optimization: loading generic functions no longer takes O(n^2) time,
2896 proportional to the amount of methods in the generic function
2897 (reported by Todd Sabin and Jeremy Brown)
2898 * optimization: the FIND and POSITION family of sequence functions
2899 are significantly faster on arrays whose element types have been
2901 * improvements to the Windows port:
2902 ** Intermittent heap corruption problems have been fixed. (thanks
2903 to Alastair Bridgewater)
2904 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2906 ** Lisp is able to unwind foreign exception frames from alien
2907 callbacks. (thanks to Alastair Bridgewater)
2909 changes in sbcl-1.0 relative to sbcl-0.9.18:
2910 * improvement: experimental support for threading on FreeBSD/x86.
2911 (thanks to NIIMI Satoshi)
2912 * improvement: runtime option --dynamic-space-size can be used
2913 to set the size of the dynamic space reserved on startup.
2914 * improvement: floating point modes in effect are now saved in
2915 core, and restored on startup.
2916 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2917 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2918 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2919 threads are not running after *SAVE-HOOKS* have run.
2920 * improvement: writes to CLOS instance slots are type-checked in code
2921 compiled with (SAFETY 3)
2922 * improvement: floating-point exception handling on FreeBSD (thanks to
2924 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2925 (thanks to Zach Beane)
2926 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2928 * improvement: added support for the Shift-JIS external format.
2929 (contributed by NIIMI Satoshi)
2930 * improvement: callbacks are supported on Linux/PPC. (thanks to
2932 * bug fix: compiler bug triggered by a (non-standard) VALUES
2933 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2934 * bug fix: file compiler no longer confuses validated and already
2935 dumped structurres. (reported by Kaersten Poeck)
2936 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2937 fill-pointer signals a type-error as required. (thanks to
2939 * bug fix: disassemly of funcallable instances works.
2940 * bug fix: single stepping on PPC.
2941 * bug fix: fix thread-safety problems in the type system (generally
2942 manifesting as nonsensical errors like "STRING is a bad type specifier
2943 for sequences" or "The value 1 is not of type FIXNUM")
2944 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2945 (reported by Josip Gracin)
2946 * bug fix: an error is signaled for attempts to displace arrays with
2947 incompatible element types (thanks to Mario Mommer)
2948 * bug fix: more correct handling of wide characters in debug info
2949 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2950 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2951 and don't cause extra consing
2952 * optimization: MAP and MAP-INTO are significantly faster on vectors
2953 whose elements types have been declared.
2954 * Improvements to SB-SPROF:
2955 ** Support for allocation profiling
2956 ** Reduced profiling overhead, especially for long profiling runs
2957 * Improvements to the Windows port:
2958 ** floating point exceptions are now reported correctly.
2959 ** stack exhaustion detection works partially.
2960 ** more accurate GET-INTERNAL-REAL-TIME.
2961 ** better RUN-PROGRAM behaviour in case of errors in the child
2963 ** PROBE-FILE now simplifies pathnames correctly.
2964 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2965 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2966 1st 1970 (although time timezone data will be unreliable).
2967 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2969 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2970 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2971 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2973 * bug fix: two potential GC deadlocks affecting threaded builds.
2974 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2975 returns T (reported by Anton Kazennikov)
2976 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2977 with non-variable places
2978 * bug fix: remove a race condition in the setting of
2979 funcallable-instance functions, this should make threaded CLOS
2980 code more stable against memory faults.
2981 * bug fix: corruption of specials when unbinding is interrupted by an
2982 asynchronous unwind (reported by Hannu Koivisto)
2983 * improvement: the debugger will now also display local variables that
2984 are only used once, for code compiled with a DEBUG optimization quality
2987 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2988 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2989 * incompatible change: External-format support for FFI calls. The
2990 SB-ALIEN:C-STRING no longer implies an ASCII
2991 external-format. Instead the string is subject to external-format
2992 conversion. Additionally return values of type SB-ALIEN:C-STRING
2993 are by default of type (SIMPLE-ARRAY CHARACTER), not
2994 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2995 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2996 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2997 * incompatible change: SB-EXT package no longer contains the
2998 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2999 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3001 * incompatible change: the single-stepper is no longer available
3002 on Alpha, Mips and Sparc platforms.
3003 * minor incompatible change: the direct superclasses of
3004 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3005 not (STANDARD-OBJECT FUNCTION). This makes the
3006 class-precedence-lists of GENERIC-FUNCTION and
3007 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3009 * minor incompatible change: the default stream external format on
3010 non-unicode SBCL is no longer detected from the locale, but is always
3012 * new feature: Add a version of evaluator that uses an interpreter instead
3013 of the compiler. EVAL still uses the compiler by default, to switch it
3014 to use the interpreter, set the value of the variable
3015 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3016 * minor incompatible change: the single-stepper REPL has been merged
3017 with the normal debugger (see the "Stepping" heading of the debugger help
3018 for more details). The debugger command STEP will no longer switch
3019 to the single-stepper REPL.
3020 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3021 for a type now works.
3022 * bug fix: loading of default sysinit file works. (thanks to Leonid
3024 * bug fix: better detection of circularities in the file-compiler.
3025 (reported by Marco Monteiro)
3026 * bug fix: the CL pathname functions now work with files that have
3027 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3028 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3029 systems with Unix98 pty semantics.
3030 * bug fix: ASDF-INSTALL will now work with bsd tar.
3031 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3033 * bug fix: timers expiring in dead threads no longer cause a
3034 type-error (reported by Paul "Nonny Mouse").
3035 * bug fix: thanks to more lightweight single-stepper instrumentation,
3036 code compiled with (DEBUG 3) will compile and execute significantly faster,
3037 and will have more accurate type-inferencing than before
3038 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3039 whose bindings are modified
3040 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3041 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3042 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3043 CL:SOFTWARE-VERSION with proper version
3045 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3046 * feature: implemented the READER-METHOD-CLASS and
3047 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3048 as specified by AMOP.
3049 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3051 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3052 (thanks to Lutz Euler)
3053 * optimization: hashing of general arrays and vectors has been
3054 improved. (reported by Any Fingerhut)
3055 * enhancement: SB-INTROSPECT is now able to find definitions of
3056 profiled functions. (thanks to Troels Henriksen)
3057 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3058 as well, allowing compiler-macros for SETF-functions to expand.
3059 * enhancement: step-instrumentation no longer wraps known
3060 single-value functions with multiple-value context, allowing
3061 better type inference.
3062 * fixed bug #337: use of MAKE-METHOD in method combination now works
3063 even in the presence of user-defined method classes. (reported by
3064 Bruno Haible and Pascal Costanza)
3065 * fixed bug #339(c): if there are applicable methods not part of any
3066 long-form method-combination group, call INVALID-METHOD-ERROR.
3067 (reported by Bruno Haible)
3068 * fixed bug #361: the :FUNCTION initarg in the protocol for
3069 initialization of methods can now be used to override
3070 internally-produced optimized functions. (reported by Bruno
3072 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3073 system-provided lambda expression no longer cause warnings about
3074 unbound #:|pv-table| symbols.
3075 * bug fix: improved the handling of type declarations and the
3076 detection of violations for keyword arguments with non-constant
3078 * bug fix: potentially erronous calls to PATHNAME and
3079 MERGE-PATHNAMES were being flushed in some cases.
3080 (reported by Richard Kreuter)
3081 * bug fix: compiled calls to TYPEP were mishandling obsolete
3082 instances. (reported by James Bielman and Attila Lendvai)
3083 * bug fix: format strings with ~> without matching ~< no longer
3084 trigger an AVER, but signal an understandable error instead.
3085 (reported by Antonio Martinez)
3086 * bug fix: specifying an output-file without a pathname-type for
3087 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3088 of input-file instead of "fasl". (reported by Robert Dodier)
3089 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3090 (reported by James Y Knight).
3091 * bug fix: compiler-macros-function did not consider the environment
3092 argument for shadowing by local functions.
3093 * bug fix: compiler-macros expansion was inhibited by local INLINE
3095 * bug fix: inline expansions of known functions were subject to
3096 step-instrumentation in high debug policies, leading to problems
3097 with type-inference.
3098 * bug fix: compiler failed to differentiate between different CONS
3099 types in some cases.
3100 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3101 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3102 * bug fix: #368: incorrect use of expressed vs. upgraded array
3104 * bug fix: #306a: more precise unions of array types.
3105 * thread-safety improvements:
3106 ** CONDITION-WAIT could return early on Linux, if the thread was
3107 interrupted and subsequently continued with SIGCONT.
3108 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3110 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3111 * added support for the ucs-2 external format. (contributed by Ivan
3113 * minor incompatible change: pretty printing of objects of type
3114 (cons symbol) is, in the default pprint-dispatch-table, now
3115 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3117 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3118 called later in a class's lifetime, possibly as late as when the
3119 first instance of the class is created. Previously,
3120 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3121 class became finalizeable.
3122 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3123 for multibyte external-format streams. (thanks to "vbzoli")
3124 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3125 with :ALLOCATION :CLASS inherited from superclasses of the
3127 * fixed bug: anonymous classes can now be created using the :NAME
3128 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3129 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3130 * fixed bug: core-files saved with :EXECUTABLE T can again be
3131 executed when SBCL_HOME isn't set. (reported by James Knight)
3132 * fixed bug: toplevel LOCALLY forms with declarations could
3133 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3134 * fixed bug: printing from several different threads using different
3135 values of *print-case* could cause invalid output, due to
3136 some internal special variables of the printer not being bound
3137 thread-locally (reported by Max Mikhanosha)
3138 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3139 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3140 (reported by Pascal Costanza)
3141 * fixed bug: FINALIZE-INHERITANCE is called from
3142 REINITIALIZE-INSTANCE on classes when the class has previously
3143 been finalized, as required by AMOP.
3144 * minor code generation optimizations:
3145 ** better register allocation in CLOS dispatching functions
3146 ** overflow detection when coercing signed bytes to fixnums on x86-64
3147 ** is now implemented with one IMUL instruction instead of three shifts
3148 ** more efficient bit-vector access on x86 and x86-64
3149 ** more efficient access to raw structure slots on x86 and x86-64
3150 * fixed some bugs revealed by Paul Dietz' test suite:
3151 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3152 return its argument.
3154 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3155 * feature: thread support on Solaris/x86, and experimental thread support
3157 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3159 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3160 default method for SLOT-UNBOUND.
3161 * minor incompatible change: prevent the user from specializing the
3162 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3163 somewhat counter to the intent of the protocol, I (CSR) think, and
3164 additionally it just doesn't work in SBCL as currently
3165 implemented, thanks to optimizations (that are always valid for
3166 the other three SLOT-VALUEish functions, but not for the setter).
3167 * minor incompatible change: the :SB-LDB feature is now enabled by
3168 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3169 the low-level debugger.
3170 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3171 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3172 down to an SB-SYS:FD-STREAM, allowing direct communication in
3173 more cases. Temporary files and pipes are still used as a fallback
3175 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3176 on the non-reentrant C functions localtime(3) and gmtime(3).
3177 * bug fix: global optimization policy was not visible in LOCALLY and
3179 * bug fix: class objects can be used as specializers in methods.
3180 (reported by Pascal Costanza)
3181 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3182 with a type error. (reported by blitz_ on #lisp)
3183 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3184 failed with a type error. (reported by Pascal Bourguignon)
3185 * bug fix: merging pathnames against defaults with :DIRECTORY
3186 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3187 (reported by James Y Knight)
3188 * bug fix: saving large (>2GB) cores on x86-64 now works
3189 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3190 constant index and a (simple-array (signed-byte 32)) array
3191 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3192 error (patch by Robert J. Macomber)
3193 * feature: TIME now displays the amount of run-time spent in GC
3194 * bug fix: The debugger now does a better job of respecting
3195 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3196 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3197 workaround for bug 403.)
3198 * bug fix: floating point exception handling now works on FreeBSD
3199 (thanks to NIIMI Satoshi)
3200 * fixed some bugs revealed by Paul Dietz' test suite:
3201 ** MISC.641: LET-conversion were not supposed to work in late
3203 * improvements to the Win32/x86 port:
3204 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3205 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3207 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3208 * new feature: source path information is generated for macro-expansion
3209 errors for use in IDE's like Slime (thanks to Helmut Eller)
3210 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3211 * bug fix: compiler does not loop forever on an invalid type in
3213 * improvement: compilation of most CLOS applications is significantly
3215 * optimization: added a limited bytecode compiler for simple toplevel
3216 forms, speeding up compilation and FASL loading
3217 * bug fix: the statistical profiler now properly distinguishes anonymous
3220 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3221 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3222 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3223 into subclasses of the finalized class. Now user calls to
3224 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3225 system return before any subclasses are finalized.
3226 * minor incompatible change: The reader no longer ignores errors
3227 regarding non-existent packages in #+ and #- feature tests.
3228 * new feature: command line options --no-sysinit, --no-userinit to
3229 inhibit loading the corresponding init files
3230 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3231 for sending data through UDP sockets (thanks to François-René Rideau)
3232 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3233 error is signalled instead (thanks to François-René Rideau)
3234 * minor incompatible change: Error signalling behaviour of lexical
3235 operations violating package locks has changed slightly. Refer to
3236 documentation on package locks for details.
3237 * enhancement: EVAL can process IF-expressions without resorting to the
3239 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3240 constant-folded properly due to missing out-of-line functions.
3241 (reported by Mika Pihlajamäki)
3242 * bug fix: LISTEN sometimes returned T even in cases where no data was
3243 immediately available from the stream
3244 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3245 were reversed. (reported by Levente Mészáros)
3246 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3247 when given a vector displaced to an adjustable array. (reported
3249 * bug fix: derivation of float boundaries from numbers outside the
3250 appropriate float range (reported by John Wiseman)
3251 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3253 * bug fix: precomputing cache entries for generic functions with
3254 some subclasses of specializers as yet invalid does not attempt to
3255 fill a cache line with a negative offset. (reported by Levente
3257 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3258 allow condition class objects as arguments to DOCUMENTATION and
3259 (SETF DOCUMENTATION); only find and set documentation for
3260 structure names for the STRUCTURE doc-type. (suggested by Gary
3262 * improvements to the Win32/x86 port:
3263 ** (user-homedir-pathname) and default initialization file
3264 locations now know about the user's "Documents and Settings"
3265 directory (thanks to Yaroslav Kavenchuk)
3266 ** run-program is implemented (thanks to Mike Thomas)
3267 ** sockets support (thanks to Timothy Ritchey)
3268 ** better backtrace support (thanks to Alastair Bridgewater)
3269 ** sb-grovel supported
3270 ** asdf-install and sb-posix work somewhat
3271 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3272 * improvements to the Solaris/x86 port:
3273 ** works on Solaris 11/Solaris Express
3274 ** floating-point exception handling support
3275 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3276 * fixed some bugs revealed by Paul Dietz' test suite:
3277 ** REMOVE-METHOD returns its generic function argument even when
3278 the method is not one of the generic functions' methods.
3279 ** objects declared as MEMBER types can be admissible arguments to
3280 structure accessors.
3281 ** printing characters should simply be printed by the FORMAT ~:C
3283 ** compiler failure when compiling functions with hairy constant
3284 defaults for optional parameters.
3285 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3286 function, which is already optimized.
3288 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3289 * new platform: experimental support for SBCL x86/Darwin, including
3290 MacOS X 10.4.5 on Intel.
3291 * new feature: Unicode character names are now known to the system
3292 (through CHAR-NAME and NAME-CHAR).
3293 * new feature: the filesystem location of SBCL's core file is
3294 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3295 * minor incompatible change: the contrib modules SB-POSIX and
3296 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3297 this change is to make it easier to distribute
3298 location-independent binaries.
3299 * bug fix: as implied by AMOP, standardized classes no longer have
3300 slots named by external symbols of public packages. (reported by
3302 * optimization: calling functions via constant symbols -- as in
3303 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3304 via the function object as in (FUNCALL #'FOO).
3305 * optimization: on x86 and x86-64, the calling convention for the
3306 case of dealing with an unknown number of values has been altered
3307 to be friendlier to the prediction heuristics implemented,
3308 particularly with reference to CALL and RET pairing. (thanks to
3309 Alastair Bridgewater)
3310 * optimization: on x86, the code for access to thread-local symbol
3311 values and binding/unbinding of thread-local symbols is smaller.
3312 (thanks to Alastair Bridgewater)
3313 * enhancement: CONSTANTP is now able to determine constantness of
3314 more complex forms, including calls to constant-foldable standardized
3315 functions and some special forms beyond QUOTE.
3316 * fixed bug: occasional GC crashes on Solaris/x86
3317 * optimization: x86-64 supports stack allocation of results of simple
3318 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3319 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3320 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3321 (thanks to James Knight)
3322 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3323 by the standard (thanks to Stephen Compall)
3325 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3326 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3327 be used for bundling the runtime and the core file into one
3328 executable binary. This feature is not currently supported on all SBCL
3329 platforms. (thanks to James Bielman and NIIMI Satoshi)
3330 * new feature: a generational or ephemeral garbage collector is now
3331 the default on the PowerPC platform (both Linux and Darwin). The
3332 old Cheney (stop and copy) collector is a build-time option.
3333 (thanks to Cyrus Harmon, after Raymond Toy)
3334 * minor incompatible change: the method by which SBCL finds its
3335 contributed modules has changed; it no longer relies on symbolic
3336 links from an $SBCL_HOME/systems directory, but searches directly
3337 in the subdirectories of $SBCL_HOME.
3338 * enhancement: the dynamic heap size on the Linux/PPC platform is
3339 markedly larger, even using the older Cheney garbage collector.
3340 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3341 certain complicated string types. (reported by Gary King)
3342 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3343 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3344 * fixed bug: DOCUMENTATION on structures no longer signals an
3345 error if no structure type of the right name exists. (reported by
3347 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3348 applicable non-standard primary or :AROUND method on
3349 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3350 no longer cause unbound variable errors. (reported by Kevin Reid)
3351 * fixed bug: metacircle resolution in cases where methods have slots
3352 added before the slots from STANDARD-METHOD. (reported by Jean
3354 * fixed bug: the Power PC assembly code for calling into lisp
3355 sometimes computed its return address wrongly (depending on the
3356 15th bit of the address, fixed at link time). This used to
3357 manifest itself in a segmentation violation while building PCL.
3358 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3359 many others over the years)
3360 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3361 the stack pointer (treated as a signed integer) is negative.
3362 (thanks to Peter van Eynde)
3364 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3365 * new platform: experimental support for the Windows operating
3366 system has been added. (thanks to Alastair Bridgewater)
3367 * fixed several bugs in and robustified the PPC FFI (including
3368 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3369 * bug fix: allow non-simple string symbol names (reported by Paul
3371 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3373 * bug fix: saving a core corrupted callbacks on x86/x86-64
3374 * bug fix: closed a loophole in metacircularity detection and
3375 grounding in the PCL implementation of CLOS.
3376 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3377 (reported by tomppa on #lisp)
3378 * bug fix: clear the direction flag on Lisp -> C transitions, as
3379 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3380 (reported by Andrej Grozin and Hendrik Maryns)
3381 * optimization: major improvements to GC efficiency on GENCGC platforms
3382 * optimization: faster implementation of EQUAL
3383 * optimization: emit more efficient opcodes for some common
3384 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3385 * optimization: several other minor code-generation improvements on x86-64
3386 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3388 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3389 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3390 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3391 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3392 by ANSI as a generic function, and for consistency (SETF
3393 GENERIC-FUNCTION-NAME) is treated likewise.
3394 * fixed bug #233.b: make constraint propagation notice when a variable
3395 value is changed after it is referenced but before it is used
3396 * fixed bug #296: no more arbitrary behaviour from filenames with
3397 odd characters as --load arguments. (reported by Adam Warner)
3398 * fixed bug #390: :CHARACTER-SET pathname components now work as
3399 expected. (reported by Tim Daly Jr)
3400 * fixed bug #391: complicated :TYPE intersections in slot
3401 definitions no longer cause an error in PCL internals.
3402 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3403 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3404 returning the number of octets which would be written to the
3405 file-stream. (thanks to Robert J. Macomber)
3406 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3407 arguments to the internal stream functions. (thanks to David
3409 * bug fix: stack exhaustion is now handled on the x86/SunOS
3410 platform. (thanks to Daisuke Homma)
3411 * bug fix: more accurate ROOM results on GENCGC platforms
3412 * optimization: improved type inference for arithmetic-for
3413 index variables in LOOP
3414 * optimization: faster floating-point SQRT on x86-64
3415 * fixed some bugs revealed by Paul Dietz' test suite:
3416 ** DOCUMENTATION returns NIL instead of "" for method combinations
3417 that don't have a docstring
3419 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3420 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3421 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3422 therefore are not customizeable by user code (as seems to be at
3423 least permitted and maybe required by AMOP). As a consolation,
3424 however, the SBCL implementation of these functions now calls
3425 REINITIALIZE-INSTANCE as specified by AMOP.
3426 * bug fix: slot-definition documentation is propagated as per ANSI
3427 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3428 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3429 argument, as do eslotd initialization methods. (from Pascal
3430 Costanza's "Closer" project)
3431 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3432 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3434 * bug fix: it is now possible to have more than one subclass of
3435 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3436 (reported by Bruno Haible, Pascal Costanza and others)
3437 * bug fix: the dependent update protocol now works for generic
3438 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3439 and Pascal Costanza)
3440 * bug fix: condition-class instances corresponding to
3441 DEFINE-CONDITION forms are now created eagerly. (reported by
3442 Kalle Olavi Niemitalo on comp.lang.lisp)
3443 * bug fix: floating point printing is more accurate in some
3444 circumstances. (thanks to Simon Alexander)
3445 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3446 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3447 * bug fix: callbacks on OS X now preserve stack-alignment.
3448 (thanks to Cyrus Harmon)
3449 * enhancement: the x86-64 disassembler is much better at
3450 disassembling SSE instructions. (thanks to Lutz Euler)
3451 * enhancement: CHECK-TYPE on a variable now allows type-inference
3452 (thanks to Vincent Arkesteijn)
3453 * optimization: improved performance of EUC-JP external format.
3454 (thanks to NIIMI Satoshi)
3455 * optimization: performance improvements to IO on file streams of
3456 :ELEMENT-TYPE CHARACTER
3457 * optimization: much faster memory allocation on x86-64
3458 * optimization: faster garbage collections (latency and throughput)
3460 * optimization: faster bignum subtraction and division on x86 and x86-64
3461 (thanks to Lutz Euler)
3462 * optimization: more accurate type-inference for loops that use a
3463 floating point index variable or a negative step.
3465 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3466 * bug fix: add a workaround to SBCL looping infinitely at startup on
3467 Linux kernels with apparently buggy implementations of personality().
3468 (thanks to Svein Ove Aas)
3469 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3470 (thanks to David Lichteblau)
3471 * bug fix: local bindings shadow global symbol macros for
3472 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3473 * optimization: non-open coded uses of numeric comparison operators
3474 (e.g. >) no longer cons when called with more than one parameter
3475 on platforms supporting dynamic-extent allocation.
3476 * enhancement: saving cores with foreign code loaded is now supported
3477 on MIPS/Linux in addition to the previously supported platforms.
3478 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3479 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3480 * bug fix: division by zero in sb-sprof when no samples were collected
3481 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3482 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3483 (thanks to Alexander Kjeldaas)
3484 * new feature: ignoring the return values of destructive functions
3485 like NREVERSE signals a compile-time style-warning.
3486 (thanks to Kevin Reid)
3487 * new feature: the alignment of alien structure fields can be
3488 explicitly specified. (thanks to Cyrus Harmon)
3489 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3490 and dump core on SIGQUIT
3492 ** incompatible change: threads do not inherit values of specials
3493 from their parents (see manual)
3494 ** bug fix: threads stacks belonging to dead threads are freed by the
3495 next exiting thread, no need to gc to collect thread stacks anymore
3496 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3497 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3498 ** bug fix: dynamic variable and thread start related gc lossage
3499 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3501 * fixed some bugs revealed by Paul Dietz' test suite:
3502 ** SUBTYPEP is slightly more accurate on heinously complicated
3503 CONS types where some of the members have uncertain (in the
3504 NIL, NIL sense) type relationships to each other.
3506 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3507 no longer purified unless :PURIFY T is explicitly specified.
3508 ** Non-purified cores are significantly smaller than before
3510 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3511 * new feature: timers based on Zach Beane's excellent timer package
3512 * added support for the following external formats: koi8-u,
3513 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3514 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3515 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3516 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3517 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3518 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3519 * incompatible change: a threaded SBCL will no longer revert to
3520 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3521 * bug fix: interrupts are disabled until startup is complete; no
3522 more sigsegvs when receiving a signal to soon
3523 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3525 * bug fix: add a workaround for the memory randomization features in
3526 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3527 workaround will only be in effect on systems with the proc filesystem
3529 * bug fix: printing objects of type HASH-TABLE signals a
3530 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3532 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3533 have been running for over 50 days. (reported by Gilbert Baumann)
3534 * bug fix: the logic for getting names of functions gets less
3535 confused when confronded with alternate-metaclass
3536 funcallable-instances. (reported by Cyrus Harmon)
3537 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3538 consistent, even on internal alternate-metaclass objects.
3539 * bug fix: flush closure information collected by physical
3540 environment analysis prepass before the main pass. (bug reported
3542 * bug fix: compiler pack phase does not modify a hashtable, which is
3543 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3544 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3545 may be expanded. (reported by Alexander <malishev> on c.l.l)
3546 * bug fix: no more style-warnings when compiling code using LAST
3547 under high-SPEED low-SPACE settings. (reported by David Wallin
3549 * fixed some incompatibilities between SBCL's MOP and the MOP
3551 ** the METAOBJECT class is now implemented;
3552 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3553 STANDARD-OBJECT, as required;
3554 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3555 now compatible (as required by VALIDATE-SUPERCLASS); there
3556 remains a consistency requirement over the presence or absence
3557 of the FUNCTION class in the superclass list of finalized
3558 classes; see the manual for more details;
3559 ** the :AROUND method for COMPUTE-SLOTS on
3560 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3561 requested slot ordering.
3563 ** bug fix: parent thread now can be gc'ed even with a live
3565 ** bug fix: binding a special with PROGV to no value is not
3566 the same as that symbol not having been bound (thanks to
3568 ** bug fix: binding specials is thread safe (thanks to
3570 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3571 and SB-SPROF do not die with 'no handler for signal XX in
3572 interrupt_handle_now(..)' anymore
3573 ** bug fix: WITH-TIMEOUT works with multiple running threads
3574 * fixed some bugs revealed by Paul Dietz' test suite:
3575 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3576 the :method-class keyword argument.
3578 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3579 * new port: the Solaris operating system on x86 processors is now
3580 mostly supported, though some rough edges in the environment
3581 remain. (thanks to Daisuke Homma)
3582 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3583 space for its heap. (thanks to Thiemo Seufer)
3584 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3585 closures. (thanks to Thiemo Seufer)
3586 * minor incompatible change: eof selects abort in the debugger.
3587 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3588 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3590 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3591 deprecated, and will go away in a future revision of SBCL.
3592 * minor incompatible change: GC-ON and GC-OFF are no longer
3593 implemented with a counter, it does not matter how many times gc
3594 is switched on or off
3595 * bug fix: discriminating functions for generic function classes
3596 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3597 make invalid assumptions about method precedence order. (reported
3599 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3600 platforms. (thanks to Thiemo Seufer)
3601 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3602 * bug fix: correct pathname printing with printer escaping is on.
3603 (thanks to Kevin Reid)
3604 * bug fix: complex VOP definitions in "user-space" no longer trigger
3605 package locks. (reported by Zach Beane)
3606 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3607 for funcallable-instance functions, and is no different from
3609 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3610 characters in the current readtable. (reported by Nicholas Neuss)
3611 * bug fix: SUBTYPEP on various CONS types returns more a more
3612 accurate acknowledgment of its certainty.
3613 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3614 lists in some cases. This partially fixes bug 384.
3615 * flush all standard streams before prompting in the REPL and the
3617 * bug fix: signal handling and triggering gc do not conflict
3618 directly anymore, in particular a high frequency sb-sprof does
3619 not prevent gc from running
3620 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3621 approximation for timezone and DST information between the
3622 universal time epoch and the smallest negative 32-bit time_t.
3623 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3624 year 1899 so long as the encoded time is non-negative.
3625 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3626 the correct answer for non-constant rotate amounts when performing
3627 an inline 32-bit rotation.
3629 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3630 there is only one thread in the session
3631 ** bug fix: memory leak for streams created in one thread and
3632 written to in another
3633 ** bug fix: lockup when compiled with gcc4
3634 ** bug fix: race that allows the gc to be triggered when gc is
3636 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3637 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3639 ** bug fix: finished threads are gc'ed properly
3640 * fixed some bugs revealed by Paul Dietz' test suite:
3641 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3642 has arguments with a different set of applicable methods from
3643 the orignal arguments.
3644 ** The type error thrown by MAP now has a correct expected-type
3646 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3647 name a compiled function.
3648 ** Three MISC tests where a large bignum was improperly coerced to
3649 a float that couldn't represent that bignum during type
3650 derivation were fixed.
3651 ** SUBTYPEP can now handle types involving the negation of a
3652 list-form FUNCTION type.
3653 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3654 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3655 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3657 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3658 * New feature: Experimental support for bivalent streams: streams
3659 opened with :element-type :default now allow character and binary
3660 (unsigned-byte 8) I/O
3661 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3662 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3664 * bug fix: no more highly sporadic "couldn't check whether ~S is
3665 readable" when reading a stream and an interrupt hits in the middle
3666 of a select system call
3667 * compiler better recognizes complex arrays (reported by Eduardo
3669 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3670 for variables on SBCL built with linkage-tables. (reported by Luis
3672 * various error reporting improvements.
3673 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3674 (Thanks to Thiemo Seufer)
3675 * bug fix: nested reader invokations work correctly
3676 * bug fix: it is possible to have simultaneous references to foreign
3677 code and foreign data with the same name.
3679 ** added x86-64 support
3680 ** incompatible change: the threading api now works with thread
3681 objects instead of thread ids
3682 ** bug fix: threads are protected from signals and interruption when
3683 starting up or going down
3684 ** bug fix: a race where an exiting thread could lose its stack to gc
3685 ** bug fix: don't halt on infinite error in threads if possible
3686 ** fixed numerous gc deadlocks introduced in the pthread merge
3687 ** bug fix: fixed thread safety issues in read and print
3688 ** bug fix: debugger doesn't hang on session lock if interrupted at
3689 an inappropriate moment
3690 ** bug fix: run-program is now thread safe(r)
3691 ** bug fix: inner with-recursive-lock no longer releases the mutex
3692 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3693 * fixed some bugs revealed by Paul Dietz' test suite:
3694 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3695 EXPECTED-TYPE slots filled.
3696 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3698 ** MAKE-CONDITION accepts classes as type-designators.
3699 ** COMPILE may never return NIL.
3700 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3701 range before calling Unix time functions
3703 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3704 * numerous signal handling fixes to increase stability
3705 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3706 * minor incompatible change: we now correctly canonize default
3707 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3708 as per the MOP, rather than the historical (INITARG INITFUNCTION
3709 INITFORM). (reported by Bruno Haible)
3710 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3711 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3712 for more information.
3713 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3714 pathname is a directory pathname.
3715 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3716 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3718 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3719 :METACLASS argument in addition to a class name. (reported by
3720 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3721 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3722 (reported by Bruno Haible; patch from Gerd Moellmann)
3723 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3725 * bug fix: more cleanups to the floating point exception handling on
3726 x86-64 (thanks to James Knight)
3727 * bug fix: the compiler does not try to constant fold calls of
3728 COERCE and BIT-* functions when they return freshly constructed
3729 objects. (reported by Nikodemus Siivola and Paul Dietz)
3730 * optimization: improved the MIPS versions of generic (in the
3731 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3732 * optimization: direct conversion of (unsigned-byte 32) to floats on
3733 the PowerPC platform.
3734 * optimization: structure instances with raw slots now use less
3735 memory, and probably show better memory locality. (thanks to
3737 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3738 are treated as requests for stack allocation on the x86-64,
3739 Alpha-32, PPC and SPARC platforms.
3740 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3741 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3742 (thanks to Tony Martinez)
3744 ** gcing a dead thread can no longer lead to lockups
3745 ** threads block signals until they are set up properly
3746 ** errno is no longer shared by threads
3747 ** interrupt-thread restores the eflags register on x86
3748 ** fixed some lockups due to gc/thread interaction
3749 * fixed some bugs revealed by Paul Dietz' test suite:
3750 ** invalid dotted lists no longer raise a read error when
3751 *READ-SUPPRESS* is T
3752 ** signal an error if a symbol that names a declaration is used
3753 as the name of a type, or vice versa
3754 ** allow using the (declare (typespec var*)) abbreviation for
3755 (declare (type typespec var*)) with all type specifiers
3756 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3757 ** always return NIL from PPRINT-POP when OBJECT is NIL
3758 ** don't signal errors when pretty-printing malformed LABELS,
3759 FLET or MACROLET forms
3760 ** declarations in a DOLIST body are also in scope for the
3762 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3764 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3767 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3768 * fixed cross-compiler leakages that prevented building a 32-bit
3769 target with a 64-bit host compiler.
3770 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3771 opened with :IF-EXISTS :OVERWRITE.
3772 * fixed bug 281: error for an invalid qualifier in a short-form method
3773 combination method is not signalled until the faulty method is called.
3774 * bug fix: iteration variable type inferrer failed to deal with open
3775 intervals. (reported by Alan Shields)
3776 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3777 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3778 or more runtime options were provided to the sbcl binary.
3779 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3780 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3781 * optimization: there's now a fast-path for fixnum arguments in the
3782 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3783 * optimization: the code generated on x86-64 is more compact thanks
3784 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3785 * bug fix: floating-point exception handling now partly works on
3786 x86-64. (Thanks to James Knight)
3787 * improvement to the MIPS backend from Thiemo Seufer: C-style
3788 64-bit long long arguments and return values to alien functions
3790 * fixed some bugs revealed by Paul Dietz' test suite:
3791 ** the type-error signalled from WARN has a filled-in DATUM slot.
3792 ** the type-error required when a stream is not associated with
3793 a file has the stream as its datum.
3794 ** type-errors on single-floats on x86-64 no longer have
3795 :INVALID-OBJECT as the datum
3796 ** the type-errors signalled for invalid function names now have
3797 a correct expected type
3798 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3799 for structures defined with a :TYPE. Documentation strings for
3800 typed structures are no longer immediately discarded
3801 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3802 broadcast streams and synonym streams. FILE-LENGTH now also works
3803 on broadcast streams.
3805 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3806 * incompatible change: the --noprogrammer option, deprecated since
3807 version 0.7.5, has been removed. Please use the equivalent
3808 --disable-debugger option instead.
3809 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3811 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3812 inoperational for a while now) has been completely removed.
3813 * null lexical environments are now printed as #<NULL-LEXENV>,
3814 significantly reducing the amount of clutter in typical backtraces.
3815 * documentation on weak pointers, finalization, and after GC hooks
3816 has been added to the manual.
3817 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3818 as other specialized array types, is much faster. SUBSEQ and
3819 COPY-SEQ on such arrays have also been sped up.
3820 * optimization: EQL is now more efficient when at least other argument
3821 is known to be of type (OR FIXNUM (NOT NUMBER)).
3822 * fixed bug: the runtime is now less vulnerable to changes in the
3823 size of the SBCL object on OS X, and virtual memory is reserved for
3824 all spaces that need to be at a fixed address.
3825 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3826 * fixed bug: finalizers and after GC hooks that cause consing are now
3828 * fixed bug: compiler error messages and summaries are now printed to
3829 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3830 * fixed inference of the upper bound of an iteration variable.
3831 (reported by Rajat Datta).
3832 * fixed bug 211e: calling local functions with duplicated constant
3833 keyword argument no longer causes a bogus style warning about an
3835 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3836 ftype declaration to be disregarded. (reported by Dave Roberts)
3837 * fixed bug 373: caused by erronous compilation of references to alien
3838 variables in the runtime on ppc/darwin.
3839 * fixed bug 376: CONJUGATE type deriver.
3840 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3841 (reported by Baughn on #lisp)
3842 * a cross-compiler bug on non-x86 platforms has been identified and
3843 fixed. (thanks to Bruno Haible)
3844 * improvements to the MIPS runtime code for increased stability.
3845 (thanks to Thiemo Seufer)
3846 * increased the maximimum compact environment size to allow
3847 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3848 * partial workaround for bug 135: don't name the function we're
3849 calling for hairy cases of EVAL, so as not to accumulate one environment
3850 entry per call to EVAL. (reported by Kevin Reid)
3851 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3852 * optimization: type testing for non-vector arrays should be faster.
3853 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3855 * bug fix: setting 31st element of a bit vector to zero did not work
3857 * bug fix: redefining a class definition which failed due to a
3858 previous accessor / function clash now works (but see BUGS entry
3859 #380 for more problems in this area). (thanks to Zach Beane)
3860 * the long form of DEFINE-METHOD-COMBINATION disables method group
3861 checking when given a single method group with pattern *. (thanks
3863 * on x86 compiler supports stack allocation of results of simple
3864 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3865 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3866 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3867 * fixed some bugs related to Unicode integration:
3868 ** the restarts for recovering from input and output encoding
3869 errors only appear when there is in fact such an error to
3871 * fixed some bugs revealed by Paul Dietz' test suite:
3872 ** MISC.549 and similar: late transformation of unsafe type
3873 assertions into derived types caused unexpected code
3875 ** SCALE-FLOAT type deriver is less wrong.
3876 ** type derivers for EXP, LOG and similar functions compute result
3877 types for complex arguments better.
3878 ** (MISC.563) CONJUGATE type deriver works for very restricted
3880 ** out-of-line type testers for character strings are available.
3881 ** EQUAL compiler transform understands specialness of objects
3883 ** accessing double-floats stored on the stack now works on x86-64.
3884 ** debugger internals could sometimes create invalid lispobjs,
3885 resulting in GC crashes.
3886 ** MISC.548: type check weakening can convert required type into
3888 ** initialization forms for bindings are not in scope of free special
3891 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3892 * incompatible change: thread support for non-NPTL systems has
3893 been removed - locking is buggy and unreliable. A threaded
3894 SBCL build will now warn at startup and refuse to create
3895 new threads, unless futex support is detected in the kernel
3896 * incompatible change: the top level REPL now has only an ABORT
3897 restart associated with it, not TOPLEVEL and ABORT as it used to.
3898 TOP and TOPLEVEL are now available as debugger commands for
3899 returning to the top level.
3900 * incompatible change: forms evaluated in the REPL now use the
3901 global optimization policy.
3902 * incompatible change: user- and system-initialization files are
3903 no longer processed with LOAD, but by READ and EVAL; hence the
3904 global optimization policy, startup package, readtable, etc,
3906 * The .fasl file format number has been incremented because of
3907 various incompatible changes.
3908 * internal entry point details and argument counts no longer appear
3909 in backtraces unless explicitly requested by setting
3910 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3911 * built-in and standard functions no longer have names like "top
3912 level local call to FOO".
3913 * fixed bug 32: functions defined in non-null lexical environments
3914 now have more legible printed representation
3915 * fixed bug 33: functions defined in non-null lexical environemnts
3916 are now more amenable to inspection by INSPECT.
3917 * workaround for bug 354: XEPs no longer appear in backtraces unless
3918 explicitly requested.
3919 * fixed bug: receiving the signal which results from attempting to
3920 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3921 SIGBUS on other *BSDs) on architectures where the C stack is also
3922 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3923 to debugger confusion or wild instability. (reported by Cheuksan
3925 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3926 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3927 (reported by Lutz Euler)
3928 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3929 compiled code. (reported by Paul Dietz)
3930 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3931 specialized parameter to a method to something that is not TYPEP
3932 the specializer is now possible.
3933 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3934 face of package deletion.
3935 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3936 pathname. (reported by David Tolpin on c.l.l)
3937 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3938 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3939 STRING-STREAM and FILE-STREAM, respectively.
3940 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3941 than previously; in addition, its test suite is now run on build.
3942 (thanks to Luke Gorrie)
3943 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3944 * optimization: added a immediate representation for single-floats
3946 * fixed some bugs revealed by Paul Dietz' test suite:
3947 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3948 ** attempting to create a package with a colliding nickname causes
3949 correctable errors to be signalled.
3950 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3951 ** several x86-64 backend bugs related to sign-extension of immediate
3954 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3955 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3956 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3958 * fixed loading of multiply forward-referenced layouts.
3959 (thanks to Cheuksan Wang)
3960 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3961 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3962 (see COMPILE-FILE documentation for details of :PRINT option)
3963 * fixed bugs 19 and 317: fixed-format floating point printing is
3964 more accurate. This also fixes a bug reported by Adam Warner
3965 related to the ~@F format directive.
3966 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3968 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3969 dispatch table if the from-char is a dispatch macro character.
3970 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3971 by the wordsize no longer ignore the last word. (reported by Lutz
3973 * fixed bug in type checking of dynamic-extent variables. (reported
3975 * optimization: sequence traversal functions use their freedom to
3976 coerce function designators to functions.
3977 * optimization: code with many calls to CLOS methods specialized on
3978 CLOS classes has had redundant type checks removed.
3979 * optimization: added declarations to speed up operations that access
3980 the internal character database (for example STRING-UPCASE)
3981 * optimization: comparison operations between floats and sufficiently small
3982 fixnums no longer create extra rationals
3983 * fixed some bugs related to Unicode integration:
3984 ** portions of multibyte characters at the end of buffers for
3985 character-based file input are correctly transferred to the
3986 start of the buffer at the next read.
3987 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3988 passing it through to OPEN.
3989 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3990 argument given to internal calls to OPEN.
3991 ** the built-in comment readers (introduced by character sequences
3992 ";" and "#|") are more forgiving to encoding errors; they will
3993 STYLE-WARN and then attempt to resync the stream at a character
3994 boundary. (thanks to Teemu Kalvas)
3995 * fixed some bugs in the x86-64 port:
3996 ** Negative short int return values from c-calls are sign-extended
3998 ** The stack is aligned to 16-bytes for c-calls, as required by
3999 the ABI. (thanks to Cheuksan Wang)
4000 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4001 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4002 for enums. (thanks to Vincent Arkesteijn)
4003 ** Multiple small optimizations and bugfixes for floating point
4005 * fixed some bugs revealed by Paul Dietz' test suite:
4006 ** Space, Tab, Linefeed, Return and Page have the invalid
4007 secondary constituent character trait.
4008 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4010 ** WITH-INPUT-FROM-STRING should only update the index place on
4012 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4013 works more reliably.
4014 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4015 with one-dimensional arrays with fill pointers.
4016 ** TYPE-OF failed on a complex with an integer realpart and a
4018 ** compiler failure during type inference for the code of form
4019 (IF (EQL X (THE ...)) ...) (MISC.535).
4021 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4022 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4023 platform. The port supports 61-bit fixnums, large memory spaces
4024 and reloading shared object files.
4025 * enhancement: saving cores with foreign code loaded is now
4026 supported on ppc/Darwin in addition to the previously supported
4028 * enhancement: the statistical profiler now walks deeper into the
4029 call stack for more meaningful call-graphs and accrued time
4030 reports (x86/x86-64 only). It also now reports time spent in
4032 * enhancement: it is now possible to trace most individual methods
4033 of a generic function in addition to tracing the generic function
4035 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4037 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4038 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4039 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4040 produces an error. (thanks to Vincent Arkesteijn)
4041 * bug fix: NAMESTRING on pathnames with :WILD components in their
4042 directories works correctly. (thanks to Artem V. Andreev)
4043 * fixed bug 125: compiler preserves identity of closures. (reported
4045 * bug fixed: functions with &REST arguments sometimes failed with
4046 "Undefined function" when compiled with (DEBUG 3). (reported by
4048 * bug fix: overflow during compiling of setting element of a bit
4049 vector with constant index and value. (reported by Timmy Douglas)
4050 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4051 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4052 * on x86 compiler partially supports stack allocation of dynamic-extent
4054 * GO and RETURN-FROM do not check the extent of their exit points
4055 when compiled with SAFETY 0.
4056 * fixed some bugs related to Unicode integration:
4057 ** encoding and decoding errors are now much more robustly
4058 handled; it should now be possible to recover even from invalid
4059 input or output to the terminal. (thanks to Teemu Kalvas)
4060 ** provided a first cut at implementing STRING-TO-OCTETS and
4061 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4062 ** altered the SB-MD5 contributed module slightly, changing the
4063 interface just enough for it to be supportable for builds where
4064 lisp characters are not eight bits.
4065 * fixed some bugs revealed by Paul Dietz' test suite:
4066 ** the FORMATTER-generated functions for ~V[ conditionals require
4067 the correct number of arguments.
4068 ** READ-FROM-STRING returns the mandated second value when applied
4069 to displaced strings.
4070 ** the #\Rubout and #\Backspace characters are treated as invalid
4071 constituent characters by the tokenizer.
4073 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4074 * new feature: reloading changed shared object files with
4075 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4076 * new feature: references to foreign variables and functions
4077 can now be compiled and loaded before the corresponding shared
4078 object file is loaded, as long as the foreign definitions are
4079 available at runtime.
4080 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4081 supported. (thanks to Dan Debertin)
4082 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4083 just keywords. (thanks to Vincent Arkesteijn)
4084 * fixed bug #331: structure-class instances corresponding to
4085 DEFSTRUCT forms are now created eagerly.
4086 * fixed bug #345: backtraces from calls to undefined functions work
4087 on x86 as well. Related bug #61 is now also partially fixed on x86
4088 (backtraces from throws to unknown catch tags.)
4089 * bug fix: lambda-list parsing is now stricter vrt. order and number
4090 of lambda-list keywords.
4091 * bug fix: as specified by AMOP, an error is signalled if a
4092 class-option appears multiple times in a DEFCLASS form. (reported
4094 * bug fix: RANDOM can be compiled when the compiler derives the type
4095 of its numeric argument as a disjoint set of small integers.
4096 (reported by Paul Dietz)
4097 * bug fix: starting a core saved with shared objects loaded when
4098 those objects are not available no longer causes threaded SBCL to
4099 hang. (reported by Sean Ross)
4100 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4102 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4103 argument, which must always be NIL. (reported by Kalle Niemitalo)
4104 * bug fix: printing 1.0d+23 no longer results in an error.
4105 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4106 * bug fix: structure slot setters preserve evaluation order. (thanks
4108 * fixed some bugs related to Unicode integration:
4109 ** RUN-PROGRAM can allow its child to take input from a Lisp
4110 stream. (reported by Stefan Scholl)
4111 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4112 locales. (reported by Ken Causey)
4113 * fixed some bugs revealed by Paul Dietz' test suite:
4114 ** INCF, DECF and REMF evaluate their place form as specified in
4116 ** FORMATTER expands ~{ ~} iteration directives with V or #
4117 parameters correctly.
4118 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4119 consequent uses no arguments correctly.
4120 ** the system has a partial understanding of the (COMPLEX RATIO)
4122 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4125 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4126 * new feature: a build-time option (controlled by the :SB-UNICODE
4127 keyword feature, enabled by default) for building the system with
4128 support for the entire 21-bit character space defined by the
4130 * new feature: the system now has rudimentary external-format
4131 support; the primary user-visible change at this time is that
4132 characters with the high bit set (such as lower-case-e-acute) will
4133 print correctly to a terminal in a UTF-8 environment.
4134 * minor incompatible change: BASE-CHAR no longer names a class;
4135 however, CHARACTER continues to do so, as required by ANSI.
4136 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4137 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4138 has been moved to the SB-EXT package (temporarily re-exported from
4140 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4141 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4143 * fixed bug #351: better error-handlind and reporting for malformed
4145 * fixed bug #350: bignum-printing is now more memory-efficient,
4146 allowing printing of very large bignums, eg. (expt 2 10000000).
4147 (reported by Bruno Haible)
4148 * fixed bug #302: better primitive-type selection for intersection
4150 * fixed bug #308: non-graphic characters now all have names, as
4151 required. (reported by Bruno Haible)
4152 * bug fix: redefining a class with different superclasses now correctly
4153 removes it from the direct-subclasses of its previous superclasses.
4154 (reported by David Morse)
4155 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4156 new value now works. (reported by Bruno Haible)
4157 * bug fix: correct canonicalization of multiple non-standard slot
4158 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4159 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4160 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4161 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4162 now exists, an signals an error.
4163 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4164 during macroexpansion for non-iteration variables as well. (reported
4165 by Bruno Haible for CMUCL)
4166 * bug fix: Cyclic structures and unprintable objects in compiler
4167 messages no longer cause errors. (reported by Bruno Haible)
4168 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4169 and READ-FROM-STRING all now return a primary value of NIL if
4170 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4171 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4172 (reported by Bruno Haible for CMUCL)
4173 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4174 do not designate a condition. (reported by Bruno Haible for
4176 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4177 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4178 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4179 permitting resolution in favour of any of the conflicting symbols.
4180 (reported by Bruno Haible for CMUCL)
4181 * bug fix: EQUAL compiler optimizations is less aggressive on
4182 strings which can potentially compare true despite having distinct
4183 specialized array element types.
4184 * bug fix: unit enumerations can be defined without dividing by
4185 zero. (thanks to Vincent Arkesteijn)
4186 * FORMAT compile-time argument count checking has been enhanced.
4187 (report from Bruno Haible for CMUCL)
4188 * a partial workaround for the bug 262: the compiler does not try to
4189 inline-expand a local function doing RETURN-FROM from a deleted
4190 BLOCK. (thanks to Peter Denno for the bug report and to David
4191 Wragg for the simple test case)
4192 * fixed some bugs revealed by Paul Dietz' test suite:
4193 ** RENAME-PACKAGE allows all package designators as new package
4195 ** constraint propagation and lambda variable substitution are
4196 more cautious in dealing with partially deleted code.
4197 ** compiler sometimes lost reoptimization passes.
4198 ** CERROR, given a condition as condition designator, passes its
4199 remaining arguments to the continue format control without
4201 ** Case-altering FORMAT directives work correctly on non-ASCII
4203 ** The REAL type specifier handles bounds outside the floating
4204 point ranges without signalling FLOATING-POINT-OVERFLOW.
4205 ** Functions with IR1-transformations can create intercomponent
4206 references to global functions.
4207 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4209 ** FORMAT ~R treats a nil value for its first parameter correctly.
4211 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4212 * enhancement: saving cores with foreign code loaded is now
4213 supported on x86/NetBSD and sparc/Linux in addition to the previously
4214 supported platforms.
4215 * bug fix: on some platforms repeated installations caused multiple
4216 copies of HTML documentation to be installed -- should not happen
4217 any more. (reported by Stefan Scholl)
4218 * bug fix: parsing self-recursive alien record types multiple times
4219 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4220 original patch by Helmut Eller for CMUCL)
4221 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4222 (thanks to Richard Kreuter)
4223 * bug fix: defining classes whose accessors are methods on existing
4224 generic functions in other (locked) packages no longer signals
4225 bogus package lock violations. (reported by François-René Rideau)
4226 * bug fix: special variables as DEFMETHOD parameters no longer have
4227 associated bogus type declarations. (reported by David Wragg and
4229 * bug fix: read-write consistency on streams of element-type
4230 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4231 * bug fix: redefiniton of the only method of a generic function with
4232 no DEFGENERIC no longer emits a full WARNING. In addition,
4233 redefinition of generic functions with no DEFGENERIC to an
4234 incompatible lambda list now signals an error. (thanks to Zach
4236 * bug fix: DEFGENERIC now works even when there's a function of the
4237 same name in an enclosing lexical environment. (thanks to Zach
4239 * fixed compiler failure, caused by instrumenting code during
4240 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4241 * optimization: added loop analysis and improved register allocation
4242 * fixed some bugs revealed by Paul Dietz' test suite:
4243 ** POSITION on displaced vectors with non-zero displacement
4244 returns the right answer.
4245 ** (SIMPLE-STRING) is a valid type specifier for sequence
4247 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4249 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4250 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4252 ** The justification version of the FORMAT ~< directive treats
4253 non-zero minpad parameter correctly.
4255 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4256 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4257 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4258 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4259 the supported interface.
4260 * new feature: Single-stepping of code compiled with DEBUG 2 or
4261 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4262 * new feature: saving cores with foreign code loaded is now
4263 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4264 Timothy Moore's work for CMUCL)
4265 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4266 parameters to * instead of NIL if no initform is supplied.
4267 (reported by Johan Bockgaard)
4268 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4269 correctly when FUNCALL appears as the car of the form. Note:
4270 despite this FUNCALL forms are not currently subject to
4271 compiler-macro expansion. (port of Raymond Toy's fix for the
4272 same from CMUCL, reported by Johan Bockgaard)
4273 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4274 (thanks for Teemu Kalvas)
4275 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4276 case instead of terminating the iteration (thanks for Julian
4277 Squires, Sean Champ and Raymond Toy)
4278 * bug fix: incorrect expansion of defgeneric that caused a style
4279 warning. (thanks for Zach Beane)
4280 * bug fix: slot accessor effective method computation works properly
4281 for classes with multiple non-standard applicable methods on
4282 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4283 * on x86 compiler supports stack allocation of results of LIST and
4284 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4285 CMUCL implementation by Gerd Moellmann)
4286 * fixed some bugs revealed by Paul Dietz' test suite:
4287 ** FORMAT strings with both the ~<~:;~> form of the justification
4288 directive and pretty-printing directives cause an error.
4290 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4291 * incompatible change: the internal functions
4292 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4293 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4294 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4295 instead of the old functions.
4296 * new feature: on platforms where "dladdr" is available foreign
4297 function names now appear in backtraces. (based on Helmut Eller's
4299 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4300 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4302 * documentation: ASDF manual is now distributed with SBCL.
4303 * bug fix: SBCL can now load its contributed modules with REQUIRE
4304 even if the system-provided entries have been removed from
4305 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4307 * bug fix: backtraces involving undefined functions or assembly
4308 routines are more informative. (thanks to Brian Downing)
4309 * bug fix: mutually referent alien structures now work correctly.
4310 (reported by Rick Taube)
4311 * bug fix: structures defined by WITH-ALIEN can be referred to
4312 within other definitions in the same WITH-ALIEN.
4313 * bug fix: division operators (MOD, TRUNCATE and the like) with
4314 constant zero divisors and integer dividends no longer generate
4316 * bug fix: provide default methods for INPUT-STREAM-P and
4317 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4318 * bug fix: improve the detection and resolution of MOP metacycles
4319 (where effective method computation depends on the generic function
4320 having its effective method computed). (reported by Bruno Haible)
4321 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4322 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4323 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4324 * bug fix: pathnames with relative directory components can be
4325 represented relative to default pathnames.
4326 * optimization: in taking the GCD of bignums, reduce the two bignums
4327 to approximately the same size (using Euclid's algorithm) before
4328 applying the more sophisticated binary GCD. (thanks to Juho
4330 * optimization: COUNT on bitvectors now operates word-at-a-time.
4331 * optimization: ASH with a positive, but not necessarily constant,
4332 (leftwards) shift, when in a modular context, is compiled to a
4334 * fixed some bugs revealed by Paul Dietz' test suite:
4335 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4336 if the corresponding argument is NIL.
4337 ** FORMAT directives accepting a minpad parameter treat negative
4339 ** literal commas as character parameters to FORMAT directives are
4341 ** literal spaces directly after ~<Newline> directives within a
4342 format-logical-block (~:< ~@:>) do not induce :FILL-style
4343 conditional newlines.
4344 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4345 as specified: it no longer includes conditional newlines).
4346 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4348 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4349 :PER-LINE-PREFIX argument does not evaluate to a string.
4351 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4352 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4353 the manual for details; for now, package locks can be disabled by
4354 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4355 if no major problems are found then it is likely that they will be
4356 compiled in unconditionally.
4357 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4358 unsupported operators on all platforms. To load a shared library
4359 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4360 object file, link it into a shared library outside of SBCL and
4361 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4363 * bug workaround: ROOM T and the GC were not working together
4364 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4365 reporting facility aren't preserved. That reporting has been
4366 disabled, so now until and unless someone figures out how to make it
4367 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4368 * minor incompatible change: as threatened around sbcl-0.8.0, the
4369 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4370 The symbols are also exported from SB-PCL for backwards
4371 compatibility, but more so than before SB-PCL should be treated as
4372 an implementation-internal package.
4373 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4375 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4376 It is known as of this release not to work on the Alpha, however.
4377 * fixed bug #167: errors signalled due to illegal syntax in method
4378 bodies are now more legible.
4379 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4380 designators and can hence be used with TYPEP.
4381 * fixed bug #333: CHECK-TYPE now ensures that the type error
4382 signalled, if any, has the right object to be accessed by
4383 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4384 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4385 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4387 * fixed bug #334: programmatic addition of slots using specialized
4388 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4389 and :ALLOCATION :CLASS slots.
4390 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4391 float exponents. (rereported by Peter Seibel)
4392 * fixed a bug: #\Space (and other whitespace characters) are no
4393 longer considered to be macro characters in standard syntax by
4394 GET-MACRO-CHARACTER.
4395 * fixed bug: initialization of condition class metaobjects no longer
4396 causes an instance of the condition to be created. (reported by
4398 * fixed bug: it is now possible to have slots such that
4399 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4400 description is neither :INSTANCE nor :CLASS.
4401 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4402 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4403 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4404 non-standard SLOT-DEFINITION-ALLOCATION values.
4405 * fixed bugs: various race conditions handling exiting threads.
4406 CL-PPCRE's thread torture test now passes.
4407 * fixed arguably-a-bug: GC time proportional to number of threads in
4408 system even when most of them are idle
4409 * optimization: improved performance of BIT and SBIT on bit-vectors.
4410 * .fasl file incompatibility: The fasl file version number has
4411 been incremented because of changes associated with package locks.
4413 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4414 * minor incompatible change: the system no longer provides
4415 optimization hints (conditions which are TYPEP
4416 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4417 mode; these hints are still emitted when higher SPEED optimization
4419 * new contrib module: a sampling profiler (profiling by statistical
4420 sampling, rather than by instrumenting functions) is available as
4421 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4422 * the behaviour of the standard function ED is now customizeable by
4423 third parties through a hook variable: see ED's documentation
4424 string for information on the protocol.
4425 * the compiler no longer emits efficiency notes for (FUNCALL X)
4426 when the type of X is uncertain under default optimization
4428 * fixed bug 276: mutating a binding of a specialized parameter to a
4429 method to something that is not TYPEP the specializer is now
4431 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4432 exhibit the required behaviour on the x86 platform. (thanks to
4433 Peter van Eynde, Eric Marsden and Bruno Haible)
4434 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4435 even for difficult arguments. (reported by Peter Graves)
4436 * fixed bug 141a: the backquote printer now descends quoted
4438 * fixed another bug in backquote printing: no more destructive
4439 modification of the form's list structure. (reported by Brian
4441 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4442 move between its address being taken and the call to
4443 interrupt_thread, fixing a crashing race condition.
4444 * the SB-POSIX contrib implementation has been adjusted so that it
4445 no longer exhibits ridiculously poor performance when constructing
4446 instances corresponding to C structs.
4448 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4449 * minor incompatible change: the sb-grovel contrib now treats C
4450 structures as alien (in the sense of SB-ALIEN) objects rather than
4451 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4452 has implications for memory management of client code
4453 (sb-grovel-returned objects must now be manually managed) and for
4454 type safety (alien objects now have full types).
4455 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4456 used to control emission of compiler diagnostics, rather than the
4457 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4458 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4459 quality should be considered deprecated.
4460 * install.sh now installs the user manual as well
4461 * (not quite a new documentable feature, but worth considering in
4462 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4463 beginnings of a semantically meaningful condition hierarchy is
4464 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4466 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4467 designator as the defaults argument.
4468 * fixed bug: Displaced arrays whose displaced-to array has become
4469 too small now cause ARRAY-DIMENSION to signal an error, providing
4470 for safer bounds-checking. (reported by Bruno Haible)
4471 * fixed bug: DEFCLASS slot definitions with identical :READER and
4472 :WRITER names now signal a reasonable error. (reported by Thomas
4474 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4476 * fixed bug: Invalid slot specification errors now print correctly.
4477 (thanks to Zach Beane)
4478 * fixed bug 320: Shared to local slot value transfers in class
4479 redefinitions now happen corrently from superclasses as
4480 well. (reported by Bruno Haible)
4481 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4483 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4484 improper lists correctly. (reported by Bruno Haible)
4485 * fixed bug 313: source-transform for <fun-name> was erroneously
4486 applied to a call of a value of a variable with name <fun-name>.
4487 (reported by Antonio Menezes Leitao)
4488 * fixed bug 307: The obsolete instance protocol ensures that
4489 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4490 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4491 remove dead unknown-values globs from the middle of the stack.
4492 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4493 easier to resume long computations after using *BREAK-ON-SIGNALS*
4494 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4495 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4496 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4497 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4498 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4499 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4501 * fixed a (fairly theoretical) bug in string printing: if
4502 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4503 does not have array-element-type equal to the most general string
4505 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4506 function name. (thanks to Nikodemus Siivola)
4507 * fixed bug: compile-time format string checker failed on
4508 non-closed ~{. (reported by Thomas F Burdick)
4509 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4510 don't warn on legal loop code involving more than one aggregate
4511 boolean. (thanks to Nikodemus Siivola)
4512 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4513 in keyword position to MAKE-PACKAGE was not being reported as
4515 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4516 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4518 * fixed bugs 280 and 312: the checking for multiple definitions in a
4519 file is less likely to become confused by uses of inline
4521 * fixed bug: the #S reader macro performs the keyword coercion
4522 specified for slot names. (reported by Kalle Niemitalo)
4523 * fixed bug: lambda lists may contain symbols whose names start with
4524 & but are not lambda-list-keywords; their occurrence triggers a
4526 * fixed bug 321: define-method-combination argument lambda lists do
4527 not cause invalid code to be generated when &optional or &aux
4528 variables have default values. (reported by Bruno Haible)
4529 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4530 have CLOS classes; this appears also to have fixed reported
4531 instability in stack exhaustion detection.
4532 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4533 MUFFLE-WARNING when no associated restart is present is now
4535 * optimization: rearranged the expansion of various defining macros
4536 so that each expands into only one top-level form in a
4537 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4539 * optimization: used a previously little-used slot in symbols to
4540 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4542 * fixed some bugs revealed by Paul Dietz' test suite:
4543 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4545 ** Fixed an optimization bug related to inheritance of initforms
4546 from local to shared slots.
4547 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4548 ** CAST optimizer forgot to flush argument derived type.
4549 ** print/read consistency on floats is now orders of magnitude
4550 more likely. (thanks also to Bruno Haible for a similar report
4552 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4553 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4554 for objects of type REAL. Make it so.
4555 ** SXHASH is specified (infelicitously) to respect similarity,
4556 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4557 it so. (thanks to Markus Ziegler)
4558 ** on the Alpha, the compiler succeeds in compiling functions
4559 returning a known number of arguments greater than 63.
4560 ** fixed handling of invalid NIL arguments in keyword position
4562 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4564 ** provided a readably-printable representation for RANDOM-STATE
4566 ** ensured that pathnames, where they have a namestring, always
4567 print using #P"..." syntax.
4569 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4570 * Support for the forthcoming 2.0 version of the NetBSD kernel
4571 running on x86 hardware has been added. (thanks to Perry
4572 E. Metzger most immediately, and others for their past work)
4573 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4574 current release version; SBCL's OpenBSD support had been broken
4575 since about the time of OpenBSD's switch to ELF binary format.)
4576 * [placeholder for DX summary]
4577 ** user code with &REST lists declared dynamic-extent, under high
4578 speed or space and low safety and debug optimization policy.
4579 * The manual has been converted to Texinfo format and the debugger
4580 chapter from the cmucl manual has been added.
4581 * A facility has been added to extract documentation strings from
4582 sbcl and store them as Texinfo-formatted snippets for inclusion in
4583 the manual (via Texinfo's @include directive)
4584 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4585 the test case to Dave Roberts)
4586 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4587 pointers. (reported by Sean Ross)
4588 * bug fix: PROFILE output is printed nicely even for large numerical
4589 values. (thanks to Zach Beane)
4590 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4591 greater than 32 handle EOF correctly.
4592 * bug fix: on X86 an immediate argument of the IMUL instruction is
4593 correctly printed in disassembly. (thanks to Lutz Euler)
4594 * bug fix: class slots in redefined classes preserve their old
4595 values. (thanks to Bruno Haible and Nikodemus Siivola)
4596 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4597 succeeds. (reported by Marco Baringer)
4598 * fixed some bugs revealed by Paul Dietz' test suite:
4599 ** READ-SEQUENCE now works on ECHO-STREAMs.
4600 ** RATIONALIZE works more according to its specification. (thanks
4603 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4604 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4605 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4606 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4607 should matter to you only if you rebind the printer control
4608 variables and then find you want different bindings in the
4609 debugger than in the ordinary execution of your program.)
4610 * The runtime build system has been tweaked to support building
4611 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4612 assembler and linker. (thanks to Nikodemus Siivola)
4613 * Unbound, undefined, undeclared variables now trigger full
4614 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4615 more often programmer error than deliberate exploitation of undefined
4617 * optimization: the hash algorithm for strings has changed to one
4618 that is less vulnerable to spurious collisions. (thanks to Juho
4620 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4621 needless bounds checking. (thanks to Juho Snellman)
4622 * optimization: implemented multiplication as a modular
4623 (UNSIGNED-BYTE 32) operation on the PPC backend.
4624 * fixed some bugs revealed by Paul Dietz' test suite:
4625 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4627 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4628 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4629 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4631 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4633 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4635 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4636 their output stream on EOF from read.
4637 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4638 have been read to end-of-file.
4639 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4641 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4642 description of determination of which consecutive characters
4644 ** Printing the "Space" character with escaping on now yields "#\\ ",
4645 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4646 ** Reading floating-point numbers with *READ-BASE* set to a number
4647 less than 10 works correctly.
4648 ** Reading floating-point numbers with *READ-BASE* set to a number
4649 more than 10 works correctly.
4650 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4651 the readtable currently in effect.
4653 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4654 * minor incompatible change: parsing of namestrings on a physical
4655 (Unix) host has changed; numbers after the final #\. in a
4656 namestring are no longer interpreted as a version field. This is
4657 intented to be largely invisible to the user, except that the
4658 meaning of the namestring "*.*.*" has changed: it now refers to a
4659 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4660 should usually be replaced by
4661 (make-pathname :name :wild :type :wild :version :wild)
4662 with the added benefit that this is more likely to be portable.
4663 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4664 option to OPEN now signals an error if the file being opened
4665 exists; this may have an impact on existing code.
4666 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4667 signals received, on the PowerPC platforms (both Linux and
4668 Darwin). (thanks to Pierre Mai for pointing out the location of
4670 * several fixes on OS X: The system now builds and runs cleanly on
4671 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4672 (thanks to Brian Mastenbrook)
4673 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4674 second-resolution: integer multiples of 1/3600 between -24 and 24.
4675 (thanks to Vincent Arkesteijn)
4676 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4677 type when called with 1 argument; PEEK-CHAR checked type of
4678 PEEK-TYPE only after having read first character from a
4679 stream. (reported by Peter Graves)
4680 * bug fix: the garbage collector now has much better locality
4681 behaviour, and in particular no longer treats all memory as being
4682 exhausted when many small objects point to each other in a deeply
4684 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4685 recognized as being TYPEP their class.
4686 * bug fix: the PUSHNEW documentation string has been corrected.
4687 (thanks to Vincent Arkesteijn)
4688 * bug fix: defaulting of the value for the last of an atypically
4689 large number of multiple values being bound was not being
4690 performed correctly on the Alpha or PPC platforms
4691 * optimization: implemented multiplication as a modular
4692 (UNSIGNED-BYTE 32) operation on the x86 backend.
4693 * optimization: SEARCH on simple-base-strings can now be open-coded.
4694 (see also contrib/compiler-extras.lisp for inspiration for
4695 teaching the compiler about the Boyer-Moore algorithm).
4696 * value, returned by MAX (and MIN) called with several EQUALP, but
4697 not EQL, arguments now does not depend on compiler settings.
4698 * fixed some bugs revealed by Paul Dietz' test suite:
4699 ** in stack analysis liveness information is propagated from
4700 non-local entry points.
4701 ** pathwise CAST removing failed when the CAST node did not start
4703 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4704 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4706 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4707 host is already defined.
4708 ** RENAME-FILE works on streams instead of signalling an internal
4710 ** PEEK-CHAR uses the current readtable when determining whether
4711 or not a character is whitespace.
4712 ** MERGE-PATHNAMES handles the case when the pathname does not
4713 specify a name while the default-pathname specifies a version.
4714 ** Pathnames now stand a better chance of respecting print/read
4716 ** Attempting to use standardized file system operators with a
4717 pathname with invalid :DIRECTORY components signals a
4719 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4721 ** DIRECTORY on logical pathnames is more correct.
4722 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4723 signal a TYPE-ERROR if their argument is not a stream.
4724 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4725 designator argument does not designate a stream.
4726 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4727 examining the synonym.
4728 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4730 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4731 element-type larger than ([UN]SIGNED-BYTE 32).
4733 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4734 * When built with the :SB-FUTEX feature, threaded builds now take
4735 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4736 for faster/more reliable mutex and condition variable support.
4737 * Incompatible change (but one you probably shouldn't have been using
4738 anyway): the interface and code for arbitrating between multiple
4739 threads in the same user session has been redesigned.
4740 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4741 error when called without an explicit environment argument.
4742 (thanks to Nikodemus Siivola)
4743 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4744 confused about their position. (thanks to Adam Warner and Gerd
4746 * bug fix: Pretty printing backquoted forms with unquotations in the
4747 argument list position of various code constructs such as LAMBDA
4748 now works correctly. (reported by Paul Dietz)
4749 * bug fix: Pretty printing unquotations no longer loses all
4750 stream position information.
4751 * optimization: performance of string output streams is now less
4752 poor for multiple small sequence writes.
4753 * optimization: performance of CSUBTYPEP in the presence of complex
4754 expressions involving CONS and NOT many times has been improved.
4755 (reported by Paul Dietz)
4756 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4758 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4759 streams for the REPL, for the debugger, and so on. (thanks to
4761 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4762 * fixed some bugs revealed by Paul Dietz' test suite:
4763 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4764 is ignored if it is too small, rather than propagating through
4765 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4766 ** extremely complex negations of CONS types were not being
4767 sufficiently canonicalized, leading to inconsistencies in
4769 ** VALUES tranformer lost derived type.
4771 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4772 * fixed a bootstrapping bug: the build process no longer assumes
4773 that the various BOOLE-related constants have the same value in
4774 host and target lisps. (noted by Paul Dietz' test suite on an
4775 SBCL binary built from CLISP)
4776 * The system can now be dynamically linked on the MIPS platform,
4777 which enables dynamic loading of foreign code from Lisp. (thanks
4778 to Ralf Baechle for discussions on the MIPS ABI)
4779 * The system now records debugging information for its own source
4780 files in a filesystem-position-independent manner, relative to
4781 the "SYS" logical host.
4782 * fixed a compiler bug: MV-LET convertion did not check references
4783 to the "max args" entry point. (reported by Brian Downing)
4784 * tweaked disassembly notes to be less confident about proclaiming
4785 some instruction as an LRA. (thanks to Brian Downing)
4786 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4787 now each have their own history, command character, and other
4788 characteristics. (thanks to David Lichteblau)
4789 * fixed some bugs revealed by Paul Dietz' test suite:
4790 ** compiler failure in compiling LOGAND expressions including a
4792 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4793 shift greater than 32.
4794 ** FLUSH-DEST did not mark blocks for type check regeneration.
4795 ** HANDLER-CASE failed to accept declarations in handler clauses
4796 in some circumstances.
4798 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4799 * New code in contrib/sb-introspect (still probably not entirely
4800 stable yet) provides some support for smart Lisp development
4801 environments like SLIME.
4802 * The conditions signalled for errors occurring when loading .fasl
4803 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4804 in a way which should help ASDF recover gracefully.
4805 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4806 stuff has been cleaned up. If you code contrib/ stuff, this might
4807 affect you, and you can look at contrib/README, contrib/STANDARDS,
4808 and/or the 0.8.4.27 diff to check.
4809 * In full calls the compiler now does not generate checks for declared
4810 argument types for all arguments.
4811 * various threading fixes
4812 ** and some experimental patches which didn't make it into
4813 the main tree for this release, but which are shipped in
4814 contrib/experimental-thread.patch as a possible fix for some
4815 failures (deadlock, spinning...) in GC-intensive multithreaded
4817 * fixed PPC build problem (source code incompatibility of different
4818 library versions): added offsetof() hackery which attempts to divine
4819 where glibc maintainers put uc_mcontext today
4820 * fixed bug 282: compiler does not trust type assertions while passing
4821 arguments to a full call.
4822 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4823 &OPTIONAL VALUES type parameter.
4824 * fix bug 214: algorithm for noting rejected templates is now more
4825 similar to that of template seletion. (also reported by rydis on
4827 * fixed bug 141b: printing backquoted information readably and prettily
4828 inserts a space where necessary.
4829 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4830 (CHARACTER 10) are now reported as errors, rather than propagated
4831 as unknown types. (reported by piso on #lisp)
4832 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4833 with values NIL and :ERROR. (thanks to Milan Zamazal)
4834 * fixed bug 191c: CLOS now does proper keyword argument checking as
4835 described in CLHS 7.6.5 and 7.6.5.1.
4836 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4837 longer raise an error; further, using a list as a for-as-arithmetic
4838 counter now raises a meaningful error.
4839 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4840 now understood by sequence creation functions such as MAKE-SEQUENCE
4842 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4843 a STRING-INPUT-STREAM.
4844 * compiler enhancement: SIGNUM is now better able to derive the type
4846 * type declarations inside WITH-SLOTS are checked. (reported by
4848 * fixed some bugs revealed by Paul Dietz' test suite:
4849 ** incorrect optimization of TRUNCATE for a positive first
4850 argument and negative second.
4851 ** compiler failure in let-convertion during flushing dead code.
4852 ** compiler failure while deriving type of TRUNCATE on an
4853 interval, containing 0.
4854 ** ASH of a negative bignum by a negative bignum count now returns
4856 ** intersection of CONS types now canonicalizes properly, fixing
4857 inconsistencies in SUBTYPEP.
4859 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4860 * incompatible change: The --disable-debugger command line
4861 option now clobbers the debugger at a more fundamental
4862 level, by redefining #'INVOKE-DEBUGGER instead of by
4863 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4864 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4865 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4866 enter the debugger REPL and then suffer recursive errors
4867 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4868 while under the new system, BREAK in --disable-debugger mode
4869 terminates the system just as an unhandled error would.
4870 * fixed compiler performance when processing loops with a step >1;
4871 * bug fix: DOCUMENTATION now retrieves generic function
4872 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4873 support has been systematized, and now supports the methods
4874 specified by ANSI, along with a default method and a method for
4875 slot documentation. (reported by Nathan Froyd)
4876 * bug fix: effective methods associated with a generic function are
4877 no longer cached over a change of that generic function's method
4878 combination. (reported by Andreas Fuchs)
4879 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4880 names a non-existent directory. (thanks to Andreas Fuchs)
4881 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4882 the PPC platform, lead to stack corruption; this has been fixed.
4883 (reported by Rainer Joswig)
4884 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4885 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4886 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4887 arithmetic in general, is now much more reliable on the PPC
4889 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4890 platform now returns the right answer.
4891 * optimization: restored some effective method precomputation in
4892 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4893 precomputation is now tunable.
4894 * optimization: compiler-internal data structure use has been
4895 reviewed, and changes have been made that should improve the
4896 performance of the compiler by about 20%.
4897 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4898 simple-base-strings and simple-bit-vectors is improved.
4899 * optimization: the optimization of 32-bit logical and arithmetic
4900 functions introduced in version 0.8.3 on the x86 has been
4901 implemented on the mips, ppc and sparc platforms; an
4902 implementation of the same facility, but for 64-bit arithmetic,
4903 has been added for the alpha.
4904 * microoptimization: the compiler is better able to make use of the
4905 x86 LEA instruction for multiplication by constants.
4906 * bug fix: in some situations compiler did not report usage of
4907 generic arithmetic in (SPEED 3) policy.
4908 * bug 145b fix: compiler used wrong type specifier while converting
4909 MEMBER-types to numeric.
4910 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4912 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4913 index argument now works properly on the Alpha platform.
4914 * bug fix: floating point exception treatment on the Alpha platform
4916 * bug fix: FILE-POSITION works much better on string input and
4917 output streams. (thanks to Nikodemus Siivola)
4918 * bug fix: many threading/garbage collection symptoms sorted.
4919 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4920 might be pseudo-atomic.
4921 * internal change: Stopping for GC is now done with signals not
4922 ptrace. GC is now done in whichever thread wanted it, instead of
4924 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4926 * bug fix: result form in DO is not contained in the implicit
4928 * incompatible change: ICR structure is changed; the value part of
4929 CONTINUATION is now called LVAR; corresponding functions are
4930 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4931 * added type deriver for ISQRT (thanks to Robert E. Brown).
4932 * bug fix: better support for loading from the command line when an
4933 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4935 * fixed some bugs revealed by Paul Dietz' test suite:
4936 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4937 ** ROUND and FROUND now give the right answer when given very
4938 small float arguments.
4939 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4941 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4942 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4943 ** LCM should return a non-negative integer.
4944 ** PARSE-INTEGER returned the index of a terminator instead of the
4945 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4946 ** PARSE-INTEGER returned an incorrect index being applied to a
4948 ** LCM with two arguments of 0 returns 0 rather than signalling
4950 ** unsigned addition of a 32-bit constant with the high bit set no
4951 longer causes an internal compiler error on the x86.
4952 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4953 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4954 with negative last argument.
4955 ** byte specifiers with zero size and position no longer cause
4956 an error during type derivation.
4957 ** bignum multiplication on the Alpha platform now returns the
4959 * porting: The system now builds on SuSE AMD64, although it still
4960 generates a 32-bit binary.
4961 * .fasl file incompatibility: The fasl file version number has
4962 been incremented (because of the changes to internal compiler
4963 data structures referred to above).
4965 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4966 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4967 more accurately, on the Darwin kernel running on PowerPC hardware.
4968 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4969 * Compiler code deletion notes now signal a condition of type
4970 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4971 an associated MUFFLE-WARNING restart.
4972 * The compiler now performs limited argument count validation of
4973 constant format strings in FORMAT, and where appropriate in ERROR,
4974 CERROR and WARN. (thanks to Gerd Moellmann)
4975 * New ASDF-INSTALL contrib can be used for automatic download and
4976 installation of third-party Lisp code from CCLAN or other sites
4978 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4979 which forces another thread to execute a function supplied by the
4981 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4982 now accept and act upon their :ELEMENT-TYPE keyword argument.
4983 (reported by Martin Atzmueller, Edi Weitz)
4984 * bug fix: FILE-POSITION now accepts position designators up to
4985 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4986 is the greater. (thanks to Patrik Nordebo)
4987 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4988 Kalle Olavi Niemitalo)
4989 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4990 printable. (reported by Eric Marsden)
4991 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4992 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4993 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4994 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4995 (thanks to Stig Sandoe)
4996 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4997 UNREAD-CHAR now correctly includes the unread character in the
4998 target sequence. (thanks to Gerd Moellmann)
4999 * bug fix in threaded builds: the system can now be suspended and
5000 resumed by shell job control with minimal disruption.
5001 * bug fixes in times and timezones >2038AD
5002 * better handling of "where is GNU make?" problem in build scripts
5003 (thanks to Nikodemus Siivola)
5004 * new optimization: inside a named function any reference to a
5005 function with the same name is considered to be a self-reference;
5006 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5007 optimization quality.
5008 * new optimization on x86: logical functions and + now have
5009 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5010 used when the result is truncated to 32 bits.
5011 * VALUES declaration is partially enabled.
5012 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5013 * fixed some bugs revealed by Paul Dietz' test suite:
5014 ** The system now obeys the constraint imposed by
5015 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5016 types form a lattice under type intersection.
5017 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5018 ** ASSOC now ignores NIL elements in an alist.
5019 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5020 and (1+ MOST-POSITIVE-FIXNUM) answers.
5021 ** The addition of a method with invalid qualifiers to a generic
5022 function does not cause an error to be signalled immediately;
5023 a warning is signalled, and the error is generated only on
5024 calling the generic function.
5025 * changed .fasl file version number, in part to add type codes for
5026 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5027 obscure ANSI requirements
5029 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5030 * fixed bug 148: failure to inline-expand a local function left
5031 garbage, confusing the compiler.
5032 * fixed bugs 3cd: structure slot readers perform type check if the
5033 slot can have an invalid value (i.e. it is either not initialized
5034 or can be written with a less specific slot writer).
5035 * bug fix: the compiler now traps array references to elements off
5036 the end of an array; previously, the bounds checking in some
5037 circumstances could go off-by-one.
5038 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5040 * type declarations for array element types now obey the description
5041 on the CLHS page "Declaration TYPE", as per discussions on
5042 sbcl-help around 2003-05-08. This means that a declaration
5043 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5044 declaration, all references to BAR will be asserted or assumed
5045 (with THE, so dependent on compiler policy) to involve objects of
5046 type FOO. Note that no such declaration is implied in
5047 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5048 * declared types of functions from the "Conditions"
5049 chapter. (reported by Paul Dietz)
5050 * bug fix: CERROR accepts a function as its first argument.
5051 * bug fix: NTH an NTHCDR accept a bignum as index
5052 arguments. (reported by Adam Warner)
5053 * optimization: character compare routines now optimize comparing
5054 against a constant character. (reported by Gilbert Baumann)
5055 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5056 argument now works properly on the MIPS platform.
5057 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5058 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5059 declared to have a functional type, does not cause an error
5061 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5062 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5063 * fixed bug: if last continuation of a deleted block has a
5064 destination, this destination should be deleted too. (reported by
5066 * fixed a bug in the bootstrap process: the host compiler's values
5067 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5068 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5069 test case from Patrik Nordebo)
5070 * improved the ability of the disassembler on the PPC platform to
5071 provide helpful disassembly notes.
5072 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5073 the class in more cases than previously.
5074 * bug fix: FILE-POSITION now understands :START and :END for
5075 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5076 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5077 8) data. (thanks to David Lichteblau)
5078 * bug fix: it is possible to add a method to a generic function
5079 without lambda list.
5080 * bug fix: reader failed to signal END-OF-FILE inside an
5081 object representation. (reported by Nikodemus Siivola)
5082 * fixed some bugs revealed by Paul Dietz' test suite:
5083 ** LAST and [N]BUTLAST should accept a bignum.
5084 ** condition slot accessors are methods.
5085 ** (VECTOR NIL) is a subtype of STRING.
5087 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5088 * minor incompatible change: some nonsensical specialized lambda
5089 lists (used in DEFMETHOD) which were previously ignored now signal
5091 * minor incompatible change: the system is now aware of the types of
5092 variables in the COMMON-LISP package, and will signal errors for
5093 most violations of these type constraints (where previously they
5094 were silently accepted).
5095 * minor incompatible change: COMPILE-FILE now uses the freedom
5096 afforded (ANSI 3.2.2.3) to use derived function types for
5097 functions defined in the same file. This also permits the system
5098 to warn on static type mismatches and function
5099 redefinition. (Currently it does not work with high DEBUG level.)
5100 * minor incompatible change: VALUES declaration is disabled.
5101 * When issuing notes, the compiler now signals a condition of type
5102 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5103 restart for use in user handlers. It is expected that the
5104 COMPILER-NOTE condition will eventually become a condition
5105 supertype to a hierarchy of note types, which will then be
5106 handleable in a similar fashion. However, at the moment, no such
5107 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5108 but it's an implementation detail, not a classification for the
5110 * Changes in type checking closed the following bugs:
5111 ** type checking of unused values (192b, 194d, 203);
5112 ** template selection based on unsafe type assertions (192c, 236);
5113 ** type checking in branches (194bc).
5114 * A short form of VALUES type specifier has ANSI meaning (it has
5115 increased the number of situations when SBCL cannot perform type
5117 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5118 keywords or constants is permissible.
5119 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5120 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5121 classes. (thanks to Antonio Martinez)
5122 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5123 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5124 argument to a pretty-print stream. Instead, it leaves any such
5125 operations to DESCRIBE-OBJECT methods.
5126 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5128 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5129 lambda lists. (thanks to David Lichteblau)
5130 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5131 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5132 (thanks to Gerd Moellmann)
5133 * fixed bug 246: increased compilation speed of long
5134 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5136 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5138 * DEFCONSTANT now throws a condition of type
5139 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5140 constant to a non-EQL value; CONTINUE and ABORT restarts
5141 respectively change and preserve the value.
5142 * fixed bug 63: The code walker, part of the implementation of CLOS,
5143 is now better at handling symbol macros.
5144 * bug fix: There is no longer an internal implementation type named
5145 CL:LENGTH. (reported by Raymond Toy)
5146 * bug fix: In macro-like defining macros/special operators the
5147 implicit block does not enclose the lambda list.
5148 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5149 enclosed in parentheses) are not suitable as type specifiers, and
5150 their use properly signals an error now.
5151 * bug fix: An argument count mismatch for a type specifier in code
5152 being compiled no longer causes an unhandled error at compile
5153 time, but signals a compile-time warning.
5154 * fixed simple vector readable printing
5155 * bug fix: DESCRIBE takes more care over whether the class
5156 precedence list slot of a class is bound before accessing it.
5157 (reported by Markus Krummenacker)
5158 * bug fix: FORMATTER can successfully compile pretty-printer format
5159 strings which use variants of the ~* directive inside.
5160 * bug fix: SEARCH now applies its TEST predicate to the elements of
5161 the arguments in the correct order. (thanks to Wolfhard Buss)
5162 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5163 in type inference. (thanks to Robert E. Brown)
5164 * bug fix: Reading in symbols with an explicit package name of ""
5165 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5166 * fixed some bugs revealed by Paul Dietz' test suite:
5167 ** NIL is now allowed as a structure slot name.
5168 ** Arbitrary numbers, not just REALs, are allowed in certain
5169 circumstances in LOOP for-as-arithmetic clauses.
5170 ** Multiple class redefinitions before slot access no longer
5171 causes a type error.
5172 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5173 association between the name and a class.
5174 ** Generic functions with non-standard method-combination and over
5175 five methods all of which return constants no longer return NIL
5176 after the first few invocations. (thanks to Gerd Moellmann)
5177 ** CALL-NEXT-METHOD with no arguments now passes the original
5178 values of the arguments, even in the presence of assignment.
5179 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5181 ** DISASSEMBLE works with closures and funcallable instances.
5182 ** ADD-METHOD now returns the generic function, not the new method.
5183 ** FIND-METHOD signals an error if the lengths of the specializers
5184 is incompatible with the generic function, even if the ERRORP
5186 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5187 which its argument is a member.
5188 ** DEFCLASS only redefines the class named by its class-name
5189 argument if that name is the proper name of the class;
5190 otherwise, it creates a new class.
5191 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5192 of the UNBOUND-SLOT condition to the name of the slot.
5193 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5194 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5195 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5196 SLOT-MAKUNBOUND in the specified fashion.
5198 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5199 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5200 cross-compilation host. As a consequence, we can now bootstrap our
5201 way up to SBCL starting with a bare gcc toolchain and human-readable
5202 source code (first the source to CLISP, then the source to SBCL).
5203 * A contributed module containing a partial implementation of the
5204 simple-streams interface has been included. (thanks to Rudi
5206 * A contributed module implementing the RFC1321 Message Digest
5207 Algorithm, known as MD5, has been included.
5208 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5209 no longer has any effect, as the code controlled by this feature
5210 has been deleted. (As far as we know, no-one has ever built using
5211 this feature, and its semantics were confused in any case).
5212 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5213 work on conditions (as required by the ANSI specification),
5214 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5215 expected behaviour on conditions. Users should note, however,
5216 that such behaviour is not required by the ANSI specification,
5217 and so use of this behaviour may render their code unportable.
5218 * fixed some bugs revealed by Paul Dietz' test suite:
5219 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5221 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5222 ** SXHASH on condition objects no longer returns NIL.
5223 ** :ALLOCATION :CLASS slots are better treated; their values are
5224 updated on class redefinition, and initforms inherited from
5225 superclasses are applied.
5226 ** REMOVE-METHOD returns its generic function argument even when
5227 no method was removed.
5228 ** SHARED-INITIALIZE now initializes the values of the requested
5229 slots, including those with :ALLOCATION :CLASS.
5230 ** ALLOCATE-INSTANCE now works on structure classes defined via
5231 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5233 ** SLOT-EXISTS-P now works on conditions, as well as structures
5235 ** MAKE-LOAD-FORM now has the required methods on
5236 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5237 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5238 keyword, and now implements the SLOT-NAMES argument.
5239 ** methods with &OPTIONAL arguments no longer allow too many
5240 arguments to be passed in the call without error.
5241 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5242 option is consistent with the required arguments of the generic
5243 function lambda list.
5244 * bug fix: REQUIRE accepts a string designator. (Thanks to
5246 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5247 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5248 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5249 * bug fix: The compiler now checks for duplicated variables in macro
5251 * bug fix: SETQ on globals returns the correct value.
5252 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5253 not a COMPILER-ERROR (followed by some other strange error on
5254 choosing the CONTINUE restart).
5255 * bug fix: make.sh and friends are now more consistent in the way that
5256 they look for GNU "make".
5258 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5259 * experimental native threads support (on x86 Linux >=2.4 only).
5260 This is not compiled in by default: you need to add :SB-THREAD to
5261 the target features. See the "Beyond ANSI" chapter of the manual
5263 * fix for longstanding nonANSIism: The old distinction between
5264 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5265 The return value from CL:FIND-CLASS is now a CLOS class, and
5266 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5267 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5268 * An interface to the MetaObject Protocol, as described in Kiczales,
5269 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5270 MIT Press, 1991, is available from the SB-MOP package.
5271 * incompatible change: the SB-PCL package should now be considered
5272 a private implementation detail, and no longer a semi-private MOP
5274 * minor incompatible change: due to rearrangement for threads, the
5275 control stack and binding stack are now allocated at arbitrary
5276 addresses instead of being hardcoded per-port. Users affected by
5277 this probably have to be doing advanced things with shared
5278 libraries, and will know who they are.
5279 * minor incompatible change: Previously, all --eval forms used were
5280 processed with READ before any of them were processed with EVAL.
5281 Now each --eval form is processed with both READ and EVAL before
5282 the next --eval form is processed. (Thus package operations like
5283 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5284 work as the user might reasonably expect.)
5285 * minor incompatible change: *STANDARD-INPUT* is now only an
5286 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5288 * minor incompatible change: Y-OR-N-P is now character-oriented,
5289 not line oriented. Also, YES-OR-NO-P now works without errors.
5290 (thanks to Antonio Martinez)
5291 * sb-aclrepl module improvements: an integrated inspector, added
5292 repl features, and a bug fix to :trace command.
5293 * Known functions, which cannot be open coded by the backend, are
5294 considered to be able to check types of their arguments. (fixing
5295 a bug report by Nathan J. Froyd)
5296 * fixed a bug in computing method discriminating functions: It is
5297 now possible to define methods specialized on classes which have
5298 forward-referenced superclasses. (thanks to Gerd Moellmann)
5299 * fixed evaluation order in optional entries (reported by Gilbert
5301 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5302 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5303 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5304 required-by-AMOP NAME argument, as well as CLASS and
5305 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5306 * fixed bug 20: DEFMETHOD can define methods using names that are
5307 not the proper names of classes to designate class specializers.
5308 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5309 Unix file descriptors, instead of blowing up. (thanks to Antonio
5311 * Garbage collection refactoring: user-visible change is that a
5312 call to the GC function during WITHOUT-GCING will not do garbage
5313 collection until the end of the WITHOUT-GCING. If you were doing
5314 this you were probably losing anyway.
5315 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5316 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5317 TYPEP the latter but not the former.
5318 * The compiler issues a full WARNING for calls to undefined functions
5319 with names from the CL package.
5320 * MAP-INTO for a vector destination is open coded. (reported by
5321 Brian Downing on c.l.l)
5322 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5323 documentation string.
5324 * fixed some bugs revealed by Paul Dietz' test suite:
5325 ** COPY-ALIST now signals an error if its argument is a dotted
5327 ** Condition slots are now accessed more correctly in the presence
5328 of multiple initargs for a given slot.
5329 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5330 exclude restarts of the same name associated with a different
5332 ** DEFCLASS of forward-referenced classes with another
5333 forward-referenced class in the superclasses list no longer
5335 ** Condition slots are now initialized once each, not multiple
5336 times. (thanks to Gerd Moellmann)
5337 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5339 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5340 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5341 arguments contain duplicated elements.
5342 ** RESTART-CASE understands local macros.
5343 ** RESTART-CASE associates exactly its own restarts with a condition.
5344 ** ENDP in safe mode checks its argument to be of type LIST.
5345 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5346 in question is unbound.
5347 ** Optimized MAKE-INSTANCE functions no longer cause internal
5348 assertion failures in the presence of duplicate initargs.
5349 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5350 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5351 propagated even in the ctor optimized implementation of
5353 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5355 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5356 * a better implementation of SXHASH on (simple) bit vectors,
5357 measured both in execution speed and in distribution of results
5358 over the positive fixnums, has been installed. Likewise, a better
5359 implementation of EQUAL for simple bit vectors is now available.
5360 * fixed CEILING optimization for a divisor of form 2^k.
5361 * fixed bug 240 (emitting extra style warnings "using the lexical
5362 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5363 by Antonio Martinez)
5364 * fixed SXHASH, giving different results for NIL depending on type
5365 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5366 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5367 variable. (found by Rolf Wester)
5368 * SBCL does not ignore type declarations for special
5369 variables. (reported by rif on c.l.l 2003-03-05)
5370 * some bug fixes in contrib/sb-aclrepl/
5371 * fixed some bugs revealed by Paul Dietz' test suite:
5372 ** a bug in the CONS type specifier, whereby the CAR and CDR
5373 types got intertwined, has been fixed;
5374 ** the type system is now able to reason about the interaction
5375 between INTEGER and RATIO types more completely;
5376 ** APPEND, [N]REVERSE and NRECONC check that those their
5377 arguments, which must be proper lists, are really so;
5378 ** An array specialized to be unable to hold elements has been
5379 implemented, as required -- yes, really -- by ANSI;
5380 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5381 on malformed property lists;
5383 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5384 * incompatible packaging change: in line with Unix convention,
5385 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5386 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5387 * REQUIRE and PROVIDE are now optionally capable of doing something
5388 useful. See the documentation string for REQUIRE.
5389 * infrastructure for a managed SBCL contrib system: contributed
5390 modules in this release include:
5391 ** the ASDF system definition facility;
5392 ** an interface to the BSD Sockets API;
5393 ** an ACL-like convenience interface to the repl;
5394 (thanks to Kevin Rosenberg)
5395 ** an implementation of ROTATE-BYTE, with efficient implementation
5397 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5398 gives a closer approximation to the right answer than previously.
5399 (thanks to Raymond Toy)
5400 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5401 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5402 optional environment arguments, as required by ANSI.
5403 * fixed bugs in other functions taking environment objects, allowing
5404 calls with an explicit NIL environment argument to be compiled
5406 * fixed bug 228: primary return values from
5407 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5408 COMPILE or FUNCTION.
5409 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5410 :TYPE will no longer signal errors on innocuous objects.
5411 * fixed bug 231b: SETQ is better at respecting type declarations in
5412 the lexical environment.
5413 * fixed a bug in DEFCLASS: classes named by symbols with no or
5414 unprintable packages can now be defined.
5415 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5416 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5417 * fixed compiler failure related to checking types of functions.
5418 (reported by Robert E. Brown)
5419 * the compiler is now much more consistent in its error-checking
5420 treatment of bounding index arguments to sequence functions: in
5421 (SAFETY 3) code, errors will be signalled in almost all cases if
5422 invalid sequence bounding indices are passed to functions defined
5423 by ANSI to operate on sequences.
5424 * fixed a bug in the build procedure: documentation of SBCL-specific
5425 packages is now preserved and available in the final Lisp image.
5426 * lifted FDEFINITION lookup out of loops in the implementation of
5427 many list operations. (thanks to Robert E. Brown)
5428 * fixed a bug in the reader: the #n# reader macro now works for
5429 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5430 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5431 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5432 E. Brown and Tony Martinez respectively)
5433 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5434 SLOT-BOUNDP: in particular, it is now able to optimize them much
5435 better, and is now not vulnerable to having packages renamed.
5436 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5437 always called when a slot is not present in an instance. (thanks
5439 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5440 longer signal an error on unreading a character following EOF on
5441 the previous constituent stream. (thanks to Tony Martinez)
5442 * fixed some bugs revealed by Paul Dietz' test suite:
5443 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5444 not just nonnegative fixnums;
5445 ** the logical bit-array operators such as BIT-AND now accept an
5446 explicit NIL for their "opt-arg" argument (to indicate a
5447 freshly-consed result bit-array);
5448 ** ELT now signals an error on an invalid sequence index in safe
5450 ** the type system is now cleverer about negations of numeric
5451 types, and consequently understands the BIGNUM and RATIO types
5453 ** the type system is now cleverer about the interaction between
5454 INTEGER and RATIO types: while bugs still remain, many more
5455 cases are accurately computed;
5456 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5457 if it is in the last clause;
5458 ** CONSTANTLY now correctly returns a side-effect-free function in
5460 ** DECLARE is no longer treated as a special-operator; in
5461 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5462 * incremented fasl file version number due to the change in the
5463 DEFSTRUCT-SLOT-DESCRIPTION structure.
5465 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5466 * minor incompatible change: code processed by the "interpreter" or
5467 EVAL now has a compilation optimization policy of (DEBUG 2)
5468 (changed from (DEBUG 1)) to improve debuggability of interactive
5469 development, and to allow the use of the debug RETURN command in
5471 * an experimental implementation of the RETURN command for the
5472 debugger has been included. (thanks to Frederik Kuivinen)
5473 * fixed bug 62: constraints were not propagated into a loop.
5474 * fixed bug in embedded calls of SORT (reported and investigated by
5476 * fixed some bugs revealed by Paul Dietz' test suite:
5477 ** printing and reading of arrays with some dimensions having
5478 length 0 (thanks to Gerd Moellmann);
5479 ** BOA constructor with &AUX argument without a default value does
5480 not cause a type error;
5481 ** CONSTANTP now returns true for all self-evaluating objects.
5483 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5484 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5485 accessors that are related by inheritance, as specified in the
5486 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5487 Valtteri Vuorikoski)
5488 * The compiler is now able to inline functions that were defined in
5489 a complex lexical environment (e.g. inside a MACROLET).
5490 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5492 * Support for the upcoming FreeBSD-5.0 release has been included.
5493 (thanks to Dag-Erling Smorgrav)
5494 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5495 effect when it is not in a toplevel context.
5496 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5497 stand a better chance of being correct. (thanks to Gerd
5499 * fixed bug in COERCE, which now signals an error on coercing a
5500 rational to a bounded real type which excludes the expected
5502 * The compiler is now able to derive types more accurately from the
5503 COERCE and COMPILE functions.
5504 * fixed bug 223: functional binding is considered to be constant
5505 only for symbols in the CL package.
5506 * fixed bug 231: SETQ did not check the type of a variable being set
5507 (reported by Robert E. Brown)
5508 * A new optimization for MAKE-INSTANCE has been included, fixing
5509 various bugs (including relating to :ALLOCATION :CLASS slots and
5510 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5512 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5513 ** As required by ANSI, LOOP now disallows anonymous collection
5514 clauses such as COLLECT I in conjunction with aggregate boolean
5515 clauses such as THEREIS (= I 1);
5516 ** LOOP now signals an error when any variable is reused in the
5517 same loop (including the potentially useful construct analogous
5518 to WITH A = 1 WITH A = (1+ A);
5519 ** IT is only a special loop symbol within the first clause of a
5520 conditional loop clause;
5521 ** LOOP with a typed iteration variable over a hashtable now
5522 signals a type error iff it should.
5523 * fixed some other bugs revealed by Paul Dietz' test suite:
5524 ** FILE-STREAM now names the class previously known as FD-STREAM;
5525 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5526 argument) no longer signals an error;
5527 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5528 of the slot symbol, rather than using the current package
5529 ((:CONC-NAME "") continues to intern the slot's name in the
5531 * incremented fasl file version number, because of the incompatible
5532 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5533 of the new implementation of DEFINE-COMPILER-MACRO.
5535 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5536 * Support for building SBCL for MIPS platforms running in
5537 little-endian mode has now been checked in, and basic
5538 functionality on said platforms verified.
5539 * minor incompatible change: PCL now records the pathname of a file
5540 in which methods and the like are defined, rather than its
5542 * minor incompatible change: TRUENAME now considers the truename of
5543 a file naming a directory to be the pathname with :DIRECTORY
5544 component indicating that directory.
5545 * minor incompatible change: a NAMED clause in the extended form of
5546 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5547 reason for the previous behaviour is unclear.
5548 * more systematization and improvement of CLOS and MOP conformance
5549 in PCL (thanks to Gerd Moellman and Pierre Mai):
5550 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5552 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5553 primary methods with no specializers;
5554 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5556 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5557 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5558 FORWARD-REFERENCED-CLASSes; error reporting on
5559 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5561 ** SXHASH on CLOS instances now uses a slot internal to the
5562 instance to return different numbers on distinct instances,
5563 while preserving the same return value through invocations of
5565 ** DEFMETHOD signals errors when methods with longer incongruent
5566 lambda lists are added to generic functions;
5567 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5568 CLASS, as specified in AMOP;
5569 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5570 on the order returned by the primary method for classes of
5571 class STANDARD-CLASS;
5572 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5573 * fixed some bugs shown by Paul Dietz' test suite:
5574 ** DOLIST puts its body in TAGBODY;
5575 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5577 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5578 value producing form;
5579 ** if more variables are given to PROGV than values, extra
5580 variables are bound and made to have no value;
5581 ** NSUBSTITUTE on list arguments gets the right answer with
5583 ** ELT signals an error of type TYPE-ERROR when the index argument
5584 is not a valid sequence index;
5585 ** LOOP signals (at macroexpansion time) an error of type
5586 PROGRAM-ERROR when duplicate variable names are found;
5587 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5588 ** FUNCALL of special-operators now cause an error of type
5590 ** PSETQ now works as required in the presence of side-effecting
5591 symbol-macro places;
5592 ** NCONC accepts any object as its last argument;
5593 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5595 ** loop-for-as-package does not require a package to be explicitely
5597 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5599 * fixed bug 166: compiler preserves "there is a way to go"
5600 invariant when deleting code.
5601 * fixed bug 172: macro lambda lists with required arguments after
5602 &REST arguments now cause an error to be signalled. (thanks to
5604 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5605 bug. (thanks to Matthew Danish)
5606 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5608 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5609 arguments are lexically rebound. (thanks to Gerd Moellmann and
5611 * fixed bug 194: error messages are now more informative when there
5612 is no primary method applicable in a call to a generic
5613 function. (thanks to Gerd Moellmann)
5614 * fixed bug in command line argument checking (thanks to Julian
5616 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5617 (thanks to Matthew Danish)
5618 * incremented fasl file version number, because of the
5619 SXHASH-related changes in the layout of CLOS data structures
5621 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5622 * minor incompatible change: The runtime (the Unix executable named
5623 "sbcl") is now much pickier about the .core files it will load.
5624 Essentially it now requires .core files to descend from the same
5625 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5626 as the runtime does. (The intent is to prevent the crashes which
5627 can occur, and which can even be reported as mysterious failures,
5628 when people patch the sources or change the build parameters
5629 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5630 sbcl and .core files.)
5631 * fixed bug: VALUES-LIST is no longer optimized away.
5632 * fixed bug 142: The FFI conversion of C string values to Lisp
5633 string values no longer conses excessively. (thanks to Nathan
5634 Froyd porting Raymond Toy's fix to CMU CL)
5635 * began to systematize and improve MOP conformance in PCL (thanks to
5636 Nathan Froyd, Gerd Moellman and Pierre Mai):
5637 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5639 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5640 ** FINALIZE-INHERITANCE is now called on class finalization;
5641 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5642 argument precedence order.
5643 * fixed bug 202: The compiler no longer fails on functions whose
5644 derived types contradict their declared type.
5645 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5646 so it can be non-toplevel.
5647 * The fasl file version number has changed (because of the new
5648 implementation of DEFMACRO).
5649 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5650 safe code, that any length requirement by their type-specifier
5651 argument is valid. The exceptions to this are described in bug
5653 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5654 functions now check the types of their inputs as required by ANSI.
5655 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5656 introduced symbol is DECLAREd to be SPECIAL.
5657 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5658 * fixed bug: :COUNT argument to sequence functions may be negative
5659 * fixed bug: body of DO-SYMBOLS may contain declarations
5660 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5661 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5662 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5663 symbol macro only once
5664 * fixed printing of call frame when argument list is unavailable
5665 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5666 * compiler no longer signals WARNING on unknown keyword
5669 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5670 * A beta-quality port to the mips architecture running Linux,
5671 based on the old CMUCL backend, has been made. It has been tested
5672 on a big-endian kernel, and works sufficiently well to be able to
5673 rebuild itself; it has not been tested in little-endian mode.
5674 * fixed an inconsistency between gencgc.c and purify.c which made
5675 dumping/loading .core files unreliable
5676 * fixed bug 120a: The compiler now deals correctly with IFs where
5677 the consequent is the same as the alternative, instead of
5678 misderiving the return type. (thanks to Alexey Dejneka)
5679 * fixed bug 113: Logical pathnames are now dumpable (the logical
5680 host is resolved at load-time, throwing an error if it is not
5682 * fixed bug 174: FORMAT's error message is slightly clearer when a
5683 non-printing character is used in a format directive.
5684 * fixed several bugs in compiler checking of type declarations, i.e.
5685 violations of the Python "declarations are assertions" principle
5686 (thanks to Alexey Dejneka)
5687 * fixed several bugs in PCL's error checking (thanks to Gerd
5689 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5691 * fixed bug in compilation of functions as first class values
5692 (thanks to Antonio Martinez-Shotton)
5693 * The compiler's handling TYPE-ERRORs which it can prove will
5694 inevitably happen at runtime has been cleaned up and corrected
5695 in several ways. (thanks to Alexey Dejneka)
5696 * improved argument type checking for various basic arithmetic
5697 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5698 lavished on them in the past that they can be compiled in many
5699 ways in different special cases
5700 * fixed bug 181: compiler checks validity of user supplied type
5702 * cleaned up code flushing in optimization: Function calls which
5703 should signal errors for safety purposes (e.g. which ANSI says
5704 should signal errors when their arguments are of incorrect type)
5705 are no longer optimized away.
5706 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5707 * incremented fasl file version number, because changes in the
5708 implementation of sequence functions like COERCE caused
5709 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5710 in old inline expansions) to become undefined. (Actually these
5711 changes were later undone, so we might very well be binary
5712 compatible with 0.7.7 after all, but leaving the version number
5713 incremented seemed like the simplest and most conservative
5716 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5717 * An alpha-quality port to the parisc architecture running Linux,
5718 based on the old CMUCL backend, has been made. This, even more so
5719 than the other backends, should be considered still a work in
5720 progress; known problems include that the Linux kernel in 64-bit
5721 mode does not propagate the correct sigcontext structure to
5722 userspace, and consequently SBCL on a parisc64 kernel will not
5724 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5725 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5726 suppressed.) Also now that the compiler is looking at declarations
5727 in the environment, it checks optimization declarations as well,
5728 and suppresses inlining when (> DEBUG SPEED).
5729 * More fixes have been made to treatment of floating point exception
5730 treatment and other Unix signals. In particular, floating point
5731 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5732 * The detection and handling of control stack exhaustion (infinite
5733 or very deeply nested recursion) has changed. Stack exhaustion
5734 detection is now done by write-protecting pages at the OS level
5735 and applies at all optimization settings; when found, a
5736 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5737 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5738 be caught using IGNORE-ERRORS.
5739 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5740 correctly when transforming recursive LABELS functions to LETs.
5741 (thanks to Alexey Dejneka)
5742 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5743 that are names of constants or global variables.
5744 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5745 alien routines with docstrings.
5746 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5747 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5749 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5750 (thanks to Eric Marsden)
5751 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5752 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5753 * Bug fix: The SPARC backend can now compile functions involving
5754 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5755 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5756 to a functions expecting a PATHNAME-DESIGNATOR.
5757 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5758 lambda lists. (thanks to Alexey Dejneka)
5759 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5760 functions so that EXPORTing the name of the class doesn't cause
5761 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5762 to Antonio Martinez for reporting this)
5763 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5764 constant-folded without failing an assertion. (thanks to Einar
5765 Floystad Dorum for reporting this)
5766 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5767 types are now dealt with more correctly by the compiler.
5768 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5769 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5770 behaviour analogous to RENAME-FILE. This puts its behaviour more
5771 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5773 * The fasl file version number has changed again. (because of the
5774 bug fix involving the names of PCL MAKE-INSTANCE functions)
5776 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5777 * bug fix: Floating point exceptions are treated much more
5778 consistently on the x86/Linux and PPC/Linux platforms.
5779 * Array initialization with :INITIAL-ELEMENT is now much faster for
5780 cases when the compiler cannot open code the array creation, but
5781 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5782 array accesses have also seen a speed increase.
5783 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5784 specified. (This was at the root of some bad interactions between
5785 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5787 * bug fix: Internal error arguments for undefined functions are now
5788 computed correctly on the PPC/Linux platform.
5789 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5790 Raymond Toy's patch for CMU CL)
5791 * Support for the Solaris 9 operating environment has been included
5792 (thanks to Daniel Merritt)
5793 * A very ugly but hopefully complete draft of the missing FFI chapter
5794 of the manual has been created by reformatting the corresponding
5795 CMU CL manual chapter into (currently very ugly and incoherent)
5796 DocBook and bringing it up to date for SBCL behavior. Thus, the
5797 manual is now essentially complete, at least by my extreme
5798 once-and-only-once standards, whereby it's acceptable to refer to
5799 the doc strings of SB-EXT functions as the primary documentation.
5800 * The fasl file version number has changed again, due to cleanup of
5801 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5802 is no longer a static symbol.)
5804 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5805 * SBCL now builds with OpenMCL (version 0.12) as the
5806 cross-compilation host; also, more progress has been made toward
5807 bootstrapping under CLISP.
5808 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5810 * bug 158 fixed: The compiler can now deal with integer loop
5811 increments different from 1; fixing this turned out also to fix
5813 * bug 169 fixed: no more bogus warnings about using lexical bindings
5814 despite the presence of perfectly good SPECIAL declarations (thanks
5815 to David Lichteblau)
5816 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5817 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5818 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5820 * bug 180 fixed: Method combination specifications no longer ignore
5821 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5822 * bug fix: Structure type predicate functions now check their argument
5823 count as they should.
5824 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5825 correctly. (thanks to Pierre Mai)
5826 * minor incompatible change: The --noprogrammer option is deprecated
5827 in favor of the new --disable-debugger option, which is very similar.
5828 (The major difference is that it takes effect at a slightly different
5829 time at startup, causing handling of errors in --sysinit and
5830 --userinit files will be affected differently.) The
5831 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5832 been added to allow this functionality to be controlled from ordinary
5833 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5834 maintainers, who might want to run non-interactive scripts to
5835 build SBCL cores which will later be used interactively.)
5836 * minor incompatible change: The LOAD function no longer, when given
5837 a wild pathname to load, loads all files matching that pathname.
5838 Instead, an error of type FILE-ERROR is signalled.
5840 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5841 * bug 147 fixed: The compiler preserves its block link/count
5842 invariants more correctly now so that it doesn't crash. (thanks
5844 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5846 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5847 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5848 no-value-for-this-character as NIL (as specified by ANSI).
5849 * HOST-NAMESTRING on physical pathnames now returns a string that is
5850 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5851 (thanks to Christophe Rhodes)
5852 * The Alpha port handles icache flushing more correctly. (thanks to
5854 * More progress has been made toward bootstrapping under CLISP. (thanks
5855 to Christophe Rhodes)
5856 * The fasl file format has changed again, because dynamic loading
5857 on OpenBSD (which has non-ELF object files) motivated some cleanups
5858 in the way that foreign symbols are transformed and passed around.
5859 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5860 is no longer treated as whitespace by the reader, but instead as
5861 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5862 |A
\7fB|, instead of A as it used to.
5864 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5865 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5866 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5867 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5868 this as of 0.7.1.45, but was left out of the previous news section
5869 (thanks to Dan Barlow)
5870 * SBCL now runs on the Solaris operating system on SPARC architectures
5871 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5872 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5873 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5874 * SPARC backend cleanups, allowing builds of cores optimized for V8
5875 and V9 SPARCS, and also emission of code targeted to a particular
5876 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5878 * SBCL is closer to bootstrapping under CLISP, thanks to various
5879 fixes by Christophe Rhodes.
5880 * The fasl file format has changed again, to allow the compiler's
5881 INFO database to support symbol macros.
5882 * The user manual (in doc/) is formatted into HTML more nicely.
5883 (thanks to coreythomas)
5884 * The system is smarter about SUBTYPEP relationships, especially
5885 those involving NOT types (including types such as ATOM which are
5886 represented internally using NOT types). Thus SUBTYPEP is less
5887 likely to return (VALUES NIL NIL) in general, and in particular
5888 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5890 * The fasl file format has changed again, because the internal
5891 representation of types now includes a new slot to support the new
5892 SUBTYPEP-of-NOT-types logic.
5893 * (not a change in the main branch of SBCL, but a related prototype
5894 which can hopefully be merged into the main branch of SBCL in the
5895 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5896 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5897 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5898 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5899 dispatch macro character combinations. (thanks to Alexey Dejneka)
5900 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5901 that superficially look like logical namestrings correctly.
5902 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5904 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5905 default supplied-p) for &optional and &key arguments. (thanks to
5908 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5909 * incompatible change: The compiler is now less aggressive about
5910 tail call optimization, doing it only when (> SPACE DEBUG) or
5911 (> SPEED DEBUG). (This is an incompatible change because there are
5912 programs which relied on the old CMU-CL-style behavior to optimize
5913 away their unbounded recursion which will now die of stack overflow.)
5914 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5915 for non-GENCGC systems has been increased to 20M (since that
5916 seems much closer to the likely performance optimum for modern
5917 systems than the old 4M value was)
5918 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5919 and *DEBUG-PRINT-LEVEL*
5920 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5921 of CMU CL's support for SPARC, and various endianness and other
5922 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5923 * new syntactic sugar for the Unix command line: --load foo.bar is now
5924 an alternate notation for --eval '(load "foo.bar")'.
5926 ** The system now detects stack overflow and handles it gracefully,
5927 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5928 optimization settings. (This is a good thing in general, and
5929 its introduction in this version should be particularly timely
5930 for anyone whose code fails because of suppression of tail
5932 ** The system now hunts for the C variable "environ" in a more
5933 devious way, to avoid segfaults when the C library version differs
5934 between compile time and run time. (thanks to Christophe Rhodes)
5935 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5936 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5937 ** The compiler no longer issues bogus style warnings for undefined
5938 classes in the same source file as the DEFCLASSes which defined
5939 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5941 ** fixes in CONDITION class precedence list for undefined function
5942 errors (thanks to Alexei Dejneka)
5943 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5944 correctly. (thanks to Dan Barlow)
5945 ** portability fixes aiming at bootstrapping under CLISP (thanks
5946 to Dave McDonald and Christophe Rhodes)
5947 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5948 ** fixes in type translation and and type inference (thanks to
5950 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5951 ** various fixes in the new ports (thanks to Dan Barlow)
5952 * several changes related to debugging:
5953 ** suppression of tail recursion, as noted above
5954 ** stack overflow detection, as noted above
5955 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5956 is now the default. (For some time encapsulation has been more
5957 reliable than the breakpoint-based :ENCAPSULATE NIL
5958 implementation, at least on X86 systems; and I just noticed that
5959 encapsulation also seems closer to the spirit of the ANSI
5962 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5964 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5965 up properly again. (There was a packaging bug in 0.7.0 which
5966 left their definitions in SB-SYS::LOAD-FOREIGN and
5967 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5968 vital for most things which interface to C-level interfaces,
5969 like extensions working with sockets or databases or
5970 Perl-compatible regexes or whatever, and the need to fix
5971 this bug is the main reason that 0.7.1 was released so
5973 ** DEFGENERIC is now choosier about the methods it redefines, so that
5974 reLOADing a previously-LOADed file containing DEFGENERICs does
5975 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5976 cycle now works as it should. (thanks to Alexey Dejneka)
5977 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5978 fixed by Christophe Rhodes. (He actually submitted this patch
5979 months ago, and I delayed until after 0.7.0.)
5980 ** Bug 111 (internal compiler confusion about runtime checks on
5981 FUNCTION types) was fixed by Alexey Dejneka.
5982 * Some internal cleanups (getting rid of variables which aren't
5983 needed now that the byte interpreter is gone) caused the fasl
5984 file format number to change again.
5986 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5987 * major incompatible change: The default fasl file extension, i.e. the
5988 default extension for files produced by COMPILE-FILE, has changed
5989 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5991 ** There are many changes in the implementation of the compiler.
5992 SBCL is now essentially a compiler-only implementation of ANSI
5993 Common Lisp. EVAL still "interprets" a few special cases, but
5994 almost all the interesting cases are handled by creating
5995 a LAMBDA expression, calling COMPILE on it, then calling
5996 FUNCALL on the result.
5997 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5998 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5999 Since the code is newer, there might still be some new bugs
6000 (though not as many as before Martin Atzmueller's fixes:-). But
6001 the new code is substantially simpler and clearer, and hopefully
6002 any remaining bugs will be simpler, less fundamental, and more
6003 fixable then the bugs in the old code.
6004 ** The revised compiler is still a little unsteady on its feet.
6006 *** The debugging information it produces (particularly the names
6007 of FUNCTION objects) is sometimes much less useful than what
6008 the old compiler produced.
6009 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6010 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6011 within a MACROLET) has been temporarily weakened.
6012 ** There are new compiler optimizations for various functions:
6013 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6014 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6015 *** the math functions TRUNCATE, FLOOR, and CEILING
6016 *** the function-of-all-trades COERCE
6017 Mostly these should be transparent, but there's one
6018 potentially-annoying problem (bug 117): when the compiler
6019 inline-expands a function and does type analysis on the result,
6020 it can create control paths which have type mismatches, and
6021 when it can't prove that those control paths aren't taken,
6022 it will issue WARNINGs about the type mismatches. This is
6023 a particular problem in practice for the new sequence functions.
6024 It's not clear how this should be fixed, and for now, a
6025 workaround is given in the entry for 117 in the BUGS file.
6026 ** (Because of the interaction between the two previous items --
6027 occasional inlining problems and new inline expansions -- some
6028 of the new sequence function optimizations won't really kick in
6029 completely until debugging information, and then inlining, are
6030 straightened out in some future version.)
6031 * minor incompatible changes:
6032 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6033 DIRECTORY no longer implicitly promotes NIL slots of its
6034 pathname argument to :WILD. In particular, when you ask for the
6035 contents of a directory (which you used to be able to do without
6036 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6037 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6038 ** changes in behavior that ANSI explicitly defines to be
6039 implementation dependent:
6040 *** The new compiler-only implementation still conforms with ANSI,
6041 but acts a little different than before. Besides the obvious
6042 changes in performance tradeoffs (that the cost per form passed
6043 to EVAL has gone up, and the cost per form executed by EVAL
6044 has gone down), the behavior of the system changes a little
6045 because there are no longer any interpreted function objects.
6046 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6047 e.g. doing COMPILE on the output of interactive DEFUN is
6049 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6051 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6052 has changed from (:CL) to NIL.
6053 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6054 e.g. #\Newline and #\Tab, don't have names specified in the
6055 ANSI Common Lisp standard, is now based on their ASCII symbolic
6056 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6057 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6058 are no longer used for output.
6059 ** changes in internal implementation constants:
6060 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6061 4 million. (If your application spends a lot of time GCing and
6062 you have a lot of RAM, you might want to experiment with
6063 increasing it even more.)
6064 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6065 However, almost all old code should still continue to work without
6066 immediate update, as SB-C-CALL is now a (deprecated) nickname
6068 ** Old operator names in the style DEF-FOO are now deprecated in
6069 favor of new corresponding names DEFINE-FOO, for consistency with
6070 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6071 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6072 internal symbols, but a few supported extensions like
6073 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6074 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6075 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6076 etc. as you get deeper into recursive calls to the debugger
6077 command loop, instead of the old "5]", "5]]", "5]]]"
6078 sequence. (I was motivated to do this when squabbles between
6079 ILISP and SBCL left me very deeply nested in the debugger. In the
6080 short term, this change will probably provoke more ILISP/SBCL
6081 squabbles, but hopefully it will be an improvement in the long run.)
6082 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6083 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6084 function, since declaiming return types involving aliens is
6085 (1) annoyingly messy to do by hand and (2) vital to efficient
6086 compilation of code which calls such functions.
6087 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6088 longer reexported by the SB-EXT package. They're solely useful
6089 for alien code, so it seems more logical that you should get
6090 them from the SB-ALIEN package, not in SB-EXT.
6091 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6092 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6093 features. Instead, the code that they used to control is always
6094 built into the system.
6095 * many other bug fixes
6096 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6097 advantage of the new EVAL-WHEN stuff and to clean them up in
6098 general, and they are now more ANSI-compliant in a number of
6099 ways. Martin Atzmueller is responsible for a lot of this.
6100 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6102 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6103 *** correct ERROR type for various file operations
6104 *** some fixes for Lisp streams
6105 *** DEFMETHOD syntax checking
6106 *** changing old weird representation of debug information as
6107 strings (which, among their other deficiencies, don't transform
6108 correctly when you rename packages, and don't change their
6109 print representation when you change things like *PACKAGE*
6110 and *PRINT-LENGTH*) to symbols and lists of symbols
6111 He also made several improvements and fixed several bugs in DESCRIBE.
6112 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6114 *** misbehavior of WRITE-STRING/WRITE-LINE
6115 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6116 and several other LOOP problems as well
6117 *** DIRECTORY when similar filenames are present
6118 *** DEFGENERIC with :METHOD options
6119 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6120 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6121 *** argument ordering in FIND with :TEST option
6122 *** mishandled package designator argument in APROPOS-LIST
6123 *** various problems in the backquote readmacro
6124 *** a bug in APROPOS
6125 *** probably some others that I'm not describing very well here,
6126 since the CVS log documents them by reference to sbcl-devel
6127 messages, and the SourceForge archives aren't working well.:-(
6128 ** Dan Barlow improved the Alpha port (and is making progress on the
6129 PPC port, for those of you who think different).
6130 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6131 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6132 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6133 continues to work on the SPARC port (for those of you in a position
6134 to look down upon our little PC-compatible boxes from a great height).
6135 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6136 and uses that copy, rather than the current dynamic value, when
6137 it's trying to decide whether to truncate output. Thus e.g.
6138 (let ((*print-lines* 50))
6139 (pprint-logical-block (stream nil)
6141 (let ((*print-lines* 8))
6142 (print (aref possiblybigthings i) stream)))))
6143 should now truncate the logical block only at 50 lines, instead of
6144 often truncating it at 8 lines, as it did before.
6145 * The doc/cmucl/ directory, containing old CMU CL documentation
6146 from the time of the fork, is no longer part of the base system.
6147 SourceForge has shut down its anonymous FTP service, and with it
6148 my original plan for distributing the old CMU CL documentation
6149 there. For now, if you need these files you can download an old
6150 SBCL source release and extract them from it.
6151 * The fasl file version number changed again, for dozens of reasons,
6152 some of which are apparent above.
6154 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6155 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6156 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6157 patch, so that DISASSEMBLE output is much nicer.
6158 * The code in the SB-PROFILE package now seems reasonably stable.
6159 I still haven't decided what the final interface should look like
6160 (I'd like PROFILE to interact cleanly with TRACE, since both
6161 facilities use function encapsulation) but if you have a need
6162 for profiling now, you can probably use it successfully with
6163 the current CMU-CL-style interface.
6164 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6165 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6166 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6167 link now returns the dangling link itself, and for similar
6168 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6169 link itself. (In these cases the old code signalled an error and
6170 looped endlessly, respectively.) Thus, DIRECTORY now works even
6171 in the presence of dangling and cyclic symbolic links.
6172 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6173 is now a supported extension again, since the consensus on
6174 sbcl-devel was that it can be useful for ordinary development
6175 work, not just for debugging SBCL itself.
6176 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6177 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6178 that currently-defined functions might be redefined later with
6179 different return types.
6180 * Hash tables can be printed readably, as inspired by CMU CL code
6181 of Eric Marsden and SBCL code of Martin Atzmueller.
6182 * better error handling in CLOS method combination, thanks to
6183 Martin Atzmueller porting Pierre Mai's CMU CL patches
6184 * more overflow fixes for >16Mbyte I/O buffers
6185 * A bug in READ has been fixed, so that now a single Ctrl-D
6186 character suffices to cause end-of-file on character streams.
6187 In particular, now you only need one Ctrl-D at the command
6188 line (not two) to exit SBCL.
6189 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6191 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6192 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6193 does the right thing.
6194 * The implementation of some type tests, especially for CONDITION
6195 types, is now tidier and maybe faster, due to CMU CL code
6196 originally by Douglas Crosher, ported by Martin Atzmueller.
6197 * Some math functions have been fixed, and there are new
6198 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6199 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6200 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6201 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6202 likely to be built into sbcl-0.7.0.)
6203 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6204 CL, ported to SBCL by Martin Atzmueller)
6205 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6206 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6207 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6208 * There's a new slam.sh hack to shorten the edit/compile/debug
6209 cycle for low-level changes to SBCL itself, and a new
6210 :SB-AFTER-XC-CORE target feature to control the generation of
6211 the after-xc.core file needed by slam.sh.
6212 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6213 COMPILE-FILE is no longer supported, so that now every function
6214 gets an entry point, so that block compilation looks a little
6215 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6216 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6217 returns the number of bytes consed since the system started,
6218 rather than the number consed since the first time the function
6219 was called. (The new definition parallels ANSI functions like
6220 CL:GET-INTERNAL-RUN-TIME.)
6221 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6222 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6223 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6224 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6225 * Fasl file version numbers are now independent of the target CPU,
6226 since historically most system changes which required version
6227 number changes have affected all CPUs equally. Similarly,
6228 the byte fasl file version is now equal to the ordinary
6231 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6232 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6233 is no longer recognized. I apologize for this, because it was
6234 listed in SB-EXT as a supported extension, but I found that
6235 its existing behavior was poorly specified, as well as incorrectly
6236 specified, and it looked like too much of a mess to straighten it
6237 out. I have enough on my hands trying to get ANSI stuff to work..
6238 * many patches ported from CMU CL by Martin Atzmueller, with
6239 half a dozen bug fixes in pretty-printing and the debugger, and
6240 half a dozen others elsewhere
6241 * fixed bug 13: Floating point infinities are now supported again.
6242 They might still be a little bit flaky, but thanks to bug reports
6243 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6244 as flaky as they were.
6245 * The --noprogrammer command line option is now supported. (Its
6246 behavior is slightly different in detail from what the old man
6247 page claimed it would do, but it's still appropriate under the
6248 same circumstances that the man page talks about.)
6249 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6250 are now supported, and enabled by default. Thus, the compiler can
6251 handle many floating point and complex operations much less
6252 inefficiently. (Thus e.g. you can implement a complex FFT
6254 * The compiler now detects type mismatches between DECLAIM FTYPE
6255 and DEFUN better, and implements CHECK-TYPE more correctly, and
6256 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6257 thanks to patches from Martin Atzmueller.
6258 * various fixes to make the cross-compiler more portable to
6259 ANSI-conforming-but-different cross-compilation hosts (notably
6260 Lispworks for Windows, following bug reports from Arthur Lemmens)
6261 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6262 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6263 fixed thanks to Pierre Mai's CMU CL patches.
6264 * fixes to keep the system from overflowing internal counters when
6265 it tries to use i/o buffers larger than 16M bytes
6266 * fixed bug 45a: Various internal functions required to support
6267 complex special functions have been merged from CMU CL sources.
6268 (When I was first setting up SBCL, I misunderstood a compile-time
6269 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6270 * improved support for type intersection and union, fixing bug 12
6271 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6272 more obscure bugs as well
6273 * some steps toward byte-compiling non-performance-critical
6274 parts of the system, courtesy of patches from Martin Atzmueller
6275 * Christophe Rhodes has made some debian packages of sbcl at
6276 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6277 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6278 stable, but are nonetheless usable. When he's ready, I'd be happy
6279 to add them to the SourceForge "File Releases" section. (And if
6280 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6281 * new fasl file format version number (because of changes in
6282 internal representation of (OR ..) types to accommodate the new
6283 support for (AND ..) types, among other things)
6285 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6286 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6288 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6290 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6291 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6292 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6293 * DESCRIBE now works on structure objects again.
6294 * Most function call argument type mismatches are now handled as
6295 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6296 know whether the function will be redefined before the call is
6297 executed. (The compiler could flag local calls with full WARNINGs,
6298 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6299 it doesn't keep track of enough information to know whether calls
6300 are local in this sense.)
6301 * Compiler output is now more verbose, with messages truncated
6302 later than before. (There should be some supported way for users
6303 to override the default verbosity, but I haven't decided how to
6304 provide it yet, so this behavior is still controlled by the internal
6305 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6306 src/compiler/ir1util.lisp.)
6307 * Fasl file format version numbers have increased again, because
6308 support for the Gray streams extension changes the layout of the
6309 system's STREAM objects.
6310 * The Gray subclassable streams extension now works, thanks to a
6311 patch from Martin Atzmueller.
6312 * The full LOAD-FOREIGN extension (not just the primitive
6313 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6314 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6315 but like most other programs, it defaults to copying the Unix
6316 environment from the original process instead of starting the
6317 new process in an empty environment.
6318 * Extensions which manipulate the Unix environment now support
6319 an :ENVIRONMENT keyword option which doesn't smash case or
6320 do other bad things. The CMU-CL-style :ENV option is retained
6321 for porting convenience.
6322 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6323 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6325 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6327 * A patch from Martin Atzmueller seems to have solved the SIGINT
6328 problem, and as far as we know, signal-handling now works cleanly.
6329 (If you find any new bugs, please report them!)
6330 * The system no longer defaults Lisp source file names to types
6331 ".l", ".cl", or ".lsp", but only to ".lisp".
6332 * The compiler no longer uses special default file extensions for
6333 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6334 seems to expect a single default extension for all compiled code,
6335 and there's no compelling reason to try to stretch the standard
6336 to allow two different extensions.) Instead, byte-compiled files
6337 default to the same extension as native-compiled files.
6338 * Fasl file format version numbers have increased again, because
6339 a rearrangement of internal implementation packages made some
6340 dumped symbols in old fasl files unreadable in new cores.
6341 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6342 many fewer weird special cases.
6343 * Bug #17 (differing COMPILE-FILE behavior between logical and
6344 physical pathnames) has been fixed, and some related misbehavior too,
6345 thanks to a patch from Martin Atzmueller.
6346 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6347 by Tim Moore, ported to SBCL by Martin Atzmueller.
6348 * Martin Atzmueller fixed several filesystem-related problems,
6349 including bug #36, in part by porting CMU CL patches, which were
6350 written in part by Paul Werkowski.
6351 * More compiler warnings in src/runtime/ are gone, thanks to
6352 more patches from Martin Atzmueller.
6353 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6356 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6358 * DESCRIBE now works on CONDITION objects.
6359 * The debugger now handles errors which arise when trying to print
6360 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6362 * The build system now uses an additional file, customize-target-features.lisp,
6363 to allow local modifications to the target *FEATURES* list. (The point of
6364 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6365 debugging features enabled, without having to worry about propagating it
6366 into everyone's system when I do a "cvs update".) When no
6367 customize-target-features.lisp file exists, the target *FEATURES* list
6368 should be constructed the same way as before.
6369 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6370 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6371 warn about behavior which is undefined under the ANSI spec. Note: This
6372 is specified by ANSI, but it's not very popular with programmers.
6373 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6374 macro in the SBCL sources for an example of a workaround which you
6375 might use to make portable ANSI-standard code which does what you want.
6376 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6377 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6378 when it's used as a non-toplevel form. (This is required in order
6379 to implement the DEFCONSTANT-EQX macro.)
6380 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6381 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6382 funny things, due to bugs in the implementation of EVAL-WHEN
6383 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6384 non-toplevel DEFCONSTANTs are uncommon.)
6385 * The core file version number and fasl file version number have been
6386 incremented, because the old noncompliant DEFCONSTANT behavior involved
6387 calling functions which no longer exist, and because I also took the
6388 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6389 * fixed bug 1 (error handling before read-eval-print loop starts), and
6390 redid debugger restarts and related debugger commands somewhat while
6392 ** The QUIT debugger command is gone, since it did something
6393 rather different than the SB-EXT:QUIT command, and since it never
6394 worked properly outside the main toplevel read/eval/print loop.
6395 Invoking the new TOPLEVEL restart provides the same functionality.
6396 ** The GO debugger command is also gone, since you can just invoke
6397 the CONTINUE restart directly instead.
6398 ** The TOP debugger command is also gone, since it's redundant with the
6399 FRAME 0 command, and since it interfered with abbreviations for the
6401 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6403 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6404 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6405 some porting work by Martin Atzmueller)
6406 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6407 with a boatload of patches which he ported to SBCL. Now that those
6409 ** The system tries to make sure that its low-priority messages
6410 are prefixed by semicolons, to help people who like to use
6411 syntax highlighting in their ILISP buffer. (This patch
6412 was originally due to Raymond Toy.)
6413 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6414 patches originally written by Raymond Toy.
6415 ** The compiler understands coercion between single-value and
6416 multiple-VALUES type expressions better, getting rid of some very
6417 weird behavior, thanks to patches originally by Robert MacLachlan
6418 and Douglas Crosher.
6419 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6420 lambda lists, thanks to a patch originally by Pierre Mai.
6421 ** The system no longer bogusly warns about "abbreviated type
6423 ** The compiler gets less confused by inlining and RETURN-FROM,
6424 thanks to some patches originally by Tim Moore.
6425 ** The system no longer hangs when dumping circular lists to fasl
6426 files, thanks to a patch originally from Douglas Crosher.
6427 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6428 undefined function error.
6429 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6430 in structure slot initforms) for now, documented workaround instead:-|
6431 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6432 * fixed bug 5: added stubs for various Gray stream functions called
6433 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6434 installed, at least appropriate type errors are generated
6435 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6436 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6437 consistently in DEFMETHOD forms.
6438 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6439 it doesn't seem to affect SBCL after all
6440 * The C runtime system now builds with better optimization and many
6441 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6443 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6445 * The system is now under CVS at SourceForge (instead of the
6446 CVS repository on my home machine).
6447 * The new signal handling code has been tweaked to treat register
6448 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6449 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6450 downstream, e.g. in debug-int.lisp, has implicit dependencies
6451 on the unsignedness of integer representation of machine words,
6452 and that caused the system to bomb out with infinite regress
6453 when trying to recover from type errors involving signed values,
6454 e.g. (BUTLAST '(1 2 3) -1).)
6455 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6456 (This was one of the bugs Peter Van Eynde reported back in July.)
6457 * The system now uses code inspired by Colin Walters' O(N)
6458 implementation of MAP (from the cmucl-imp@cons.org mailing
6459 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6460 inline the MAP operation, and there is more than one
6461 sequence argument to the MAP call (so that it can't just
6462 do ETYPECASE once and for all based on the type of the
6463 single sequence argument). (The old non-inline implementation
6464 of the general M-argument sequence-of-length-N case required
6465 O(M*N*N) time when any of the sequence arguments were LISTs.)
6466 * The QUIT :UNIX-CODE keyword argument has been renamed to
6467 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6468 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6470 * Raymond Wiker's patches to port dynamic loading from Linux to
6471 FreeBSD have been added.
6472 * The BUGS file is now more nearly up to date, thanks in large part
6473 to Martin Atzmueller's review of it.
6474 * The debugger now flushes standard output streams before it begins
6475 its output ("debugger invoked" and so forth).
6476 * The core version number and fasl file version number have both
6477 been incremented, because of incompatible changes in the layout
6479 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6480 used to not be called for a saved Lisp image.)
6481 * Martin Atzmueller's version of a patch to fix a compiler crash,
6482 as posted on sbcl-devel 13 September 2000, has been installed.
6483 * Instead of installing Martin Atzmueller's patch for the
6484 compiler transform for SUBSEQ, I deleted the compiler transform,
6485 and transforms for some similar consing operations.
6486 * A bug in signal handling which kept TRACE from working on OpenBSD
6488 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6489 away by constant folding
6490 * The system now defines its address space constants in one place
6491 (in the Lisp sources), and propagates them automatically elsewhere
6492 (through GENESIS and the sbcl.h file). Therefore, patching the
6493 address map is less unnecessarily tedious and error-prone. The
6494 Lisp names of address space constants have also been systematized.
6495 * CVS tags like dollar-Header-dollar have been removed from
6496 the sources, because they have never saved me trouble and
6497 they've been source of trouble working with patches and other
6498 diff-related operations.
6499 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6500 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6502 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6504 * The system has been ported to OpenBSD.
6505 * The system now compiles with a simple "sh make.sh" on the systems
6506 that it's supported on. I.e., now you no longer need to tweak
6507 text in the target-features.lisp-expr and symlinks in src/runtime/
6508 by hand, the make.sh takes care of it for you.
6509 * The system is no longer so grossly inefficient when compiling code
6510 involving vectors implemented as general (not simple) vectors (VECTOR T),
6511 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6512 which dares to use the various sequence functions on non-simple
6513 vectors, takes less of a performance hit.
6514 * There is now a primitive type predicate VECTOR-T-P
6515 to test for the (VECTOR T) type, so that e.g.
6516 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6517 can now be compiled with some semblance of efficiency. (The old code
6518 turned the type declaration into a full call to %TYPEP at runtime!)
6519 * AREF on (VECTOR T) is still not fast, since it's still compiled
6520 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6521 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6522 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6523 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6524 without making full calls to SUBTYPEP at runtime.
6525 (Some analogous efficiency issues for non-simple vectors specialized to
6526 element types other than T, or for non-simple multidimensional arrays,
6527 have not been addressed. They could almost certainly be handled the
6528 same way if anyone is motivated to do so.)
6529 * The changes in array handling break binary compatibility, so
6530 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6531 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6532 instead of (VALUES T T).
6533 * By following the instructions that Dan Barlow posted to sbcl-devel
6534 on 2 July 2000, I was able to enable primitive dynamic object
6535 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6536 functionality is not implemented (since it calls ld to resolve
6537 library references automatically, requiring RUN-PROGRAM for its
6538 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6539 try to resolve library references) is now supported.
6540 * The system now flushes the standard output streams when it terminates,
6541 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6542 them at several other probably-convenient times, e.g. in each pass of
6543 the toplevel read-eval-print loop, and after evaluating a form given
6544 as an "--eval" command-line option. (These changes were motivated by a
6545 discussion of stream flushing issues on cmucl-imp in August 2000.)
6546 * The source transform for TYPEP of array types no longer assumes
6547 that an array whose element type is a not-yet-defined type
6548 is implemented as an array of T, but instead punts, so that the
6549 type will be interpreted at runtime.
6550 * There is now some support for cross-compiling in make.sh: each of
6551 the phases of make.sh has its own script. (This should be transparent
6552 to people doing ordinary, non-cross-compile builds.)
6553 * Since my laptop doesn't have hundreds of megabytes of memory like
6554 my desktop machine, I became more motivated to do some items on
6555 my to-do list in order to reduce the size of the system a little:
6556 ** Arrange for various needed-only-at-cold-init things to be
6557 uninterned after cold init. To support this, those things have
6558 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6559 symbols with such names are now uninterned after cold init).
6560 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6561 fasl files for cold load.
6562 ** Remove the old compiler structure pooling code (which used to
6563 be conditional on the target feature :SB-ALLOC) completely.
6564 ** Redo the representation of some data in cold init to be more compact.
6565 (I also looked into supporting byte compiled code at bootstrap time,
6566 which would probably reduce the size of the system a lot, but that
6567 looked too complicated, so I punted for now.)
6568 * The maximum signal nesting depth in the src/runtime/ support code has
6569 been reduced from 4096 to 256. (I don't know any reason for the very
6570 large old value. If the new smaller value turns out to break something,
6571 I'll probably just bump it back up.)
6572 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6574 * Many, many bugs reported by Peter Van Eynde have been added to
6575 the BUGS list; some have even been fixed.
6576 * While enabling dynamic object file loading, I tried to make the
6577 code easier to understand, renaming various functions and variables
6578 with less ambiguous names, and changing some function calling
6579 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6580 * While trying to figure out how to do the OpenBSD port, I tried to
6581 clean up some of the code in src/runtime/. In particular, I dropped
6582 support for non-POSIX signal handling, added various comments,
6583 tweaked the code to reduce the number of compilation warnings, and
6584 renamed some files to increase consistency.
6585 * To support the new automatic configuration functionality in make.sh,
6586 the source file target-features.lisp-expr has been replaced with the
6587 source file base-target-features.lisp-expr and the machine-generated
6588 file local-target-features.lisp-expr.
6589 * fixed a stupid quoting error in make.sh so that using CMU CL
6590 "lisp -batch" as cross-compilation host works again
6592 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6594 * DESCRIBE no longer tries to call itself recursively to describe
6595 bound/fbound values, so that it no longer fails on symbols which are
6596 bound to themselves (like keywords, T, and NIL).
6597 * DESCRIBE now works on generic functions.
6598 * The printer now prints less-screwed-up representations of closures
6599 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6600 * A private symbol is used instead of the :EMPTY keyword previously
6601 used to mark empty slots in hash tables. Thus
6602 (DEFVAR *HT* (MAKE-HASH-TABLE))
6603 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6604 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6605 now does what ANSI says that it should. (You can still get
6606 similar noncompliant behavior if bang on the hash table
6607 implementation with all the symbols you get back from
6608 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6609 This breaks binary compatibility, since tests for equality to
6610 :EMPTY are wired into things like the macroexpansion of
6611 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6613 * There's now a minimal placeholder implementation for CL:STEP,
6614 as required by ANSI.
6615 * An obscure bug in the interaction of the normal compiler, the byte
6616 compiler, inlining, and structure predicates has been patched
6617 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6618 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6620 * Missing ordinary arguments in a macro call are now detected even
6621 when the macro lambda list contains &KEY or &REST.
6622 * The debugger no longer complains about encountering the top of the
6623 stack when you type "FRAME 0" to explicitly instruct it to go to
6624 the top of the stack. And it now prints the frame you request even
6625 if it's the current frame (instead of saying "You are here.").
6626 * As specified by ANSI, the system now always prints keywords
6627 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6629 * The default initial SIZE of HASH-TABLEs is now smaller.
6630 * Type information from CLOS class dispatch is now propagated
6631 into DEFMETHOD bodies, so that e.g.
6632 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6634 is now basically equivalent to
6635 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6636 (DECLARE (TYPE SINGLE-FLOAT X))
6638 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6639 operation, without having to do run-time type dispatch.
6640 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6641 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6642 * Since I don't seem to be making big file reorganizations very often
6643 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6644 is overflowing my ability to conveniently back them up), I've finally
6645 checked the system into CVS. (The CVS repository is on my home system,
6646 not at SourceForge -- putting it on SourceForge might come later.)
6647 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6648 high-level GC-NOTIFY-FOO functions send their output. (There's
6649 still very little control of where low-level verbose GC functions
6650 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6651 less than it used to -- the GC-NOTIFY-FOO functions are now under
6652 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6653 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6654 in only one place in the source code, and propagates it automatically
6655 everywhere that it's needed. Thus e.g. when I bump the version from
6656 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6657 * The C source files now include boilerplate legalese and documentation
6658 at the head of each file (just as the Lisp source files already did).
6659 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6660 to his page will be replaced with a link to his new CLiki service.
6662 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6664 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6665 * The build process now looks for GNU make under the default name "gmake",
6666 instead of "make" as it used to. If GNU make is not available as "gmake"
6667 on your system, you can change this default behavior by setting the
6668 GNUMAKE environment variable.
6669 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6670 can build without error under CMU CL.
6672 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6674 * There is now a partial SBCL user manual (with some new text and some
6675 text cribbed from the CMU CL manual).
6676 * The beginnings of a profiler have been added (starting with the
6677 CMU CL profiler and simplifying and cleaning up). Eventually the
6678 main interface should be through the TRACE macro, but for now,
6679 it's still accessed through vaguely CMU-CL-style functions and macros
6680 exported from the package SB-PROFILE.
6681 * Some problems left over from porting CMU CL to the new
6682 cross-compilation bootstrap process have been cleaned up:
6683 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6684 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6685 part when getting rid of the compiler *BACKEND* stuff.)
6686 ** The value of *NULL-TYPE* was screwed up, because it was
6687 being initialized before the type system knew the final
6688 definition of the 'NULL type. This screwed up several key
6689 optimizations in the compiler, causing inefficiency in all sorts
6690 of places. (I found it because I wanted to understand why
6691 GET-INTERNAL-RUN-TIME was consing.)
6692 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6693 PROCLAIM FTYPE information. Unfortunately this broke binary
6694 compatibility again, since now the forms output by DEFGENERIC
6695 to refer to functions which didn't exist in 0.6.3.
6696 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6697 can use the new (as of 0.6.3) transform for SOME into MAP into
6699 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6700 values to (INTEGER 0 1000000), so that the time code will no longer
6701 occasionally get blown up by Linux returning 1000000 microseconds
6702 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6703 its output conform to the ANSI spec. (Alas, this makes its output
6704 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6705 * A full call to MAP NIL with a single sequence argument no longer conses.
6706 * fixes to problems pointed out by Martin Atzmueller:
6707 * The manual page no longer talks about multiprocessing as though
6708 it were currently supported.
6709 * The ILISP support patches have been removed from the distribution,
6710 because as of version 5.10.1, ILISP now supports SBCL without us
6711 having to maintain patches.
6712 * added a modified version of Raymond Toy's recent CMU CL patch for
6713 EQUALP comparison of HASH-TABLE
6715 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6717 * The system still can't cross-compile itself with
6718 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6719 entails), but at least it can compile more of itself that way
6720 than it used to be able to, and various buglets which were uncovered
6721 by trying to cross-compile itself that way have now been fixed.
6722 * This release breaks binary compatibility again. This time
6723 at least I've incremented the FASL file format version to 2, so that the
6724 problem can be detected reliably instead of just causing weird errors.
6725 * various new style warnings:
6726 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6727 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6728 ** using the lexical binding of a variable named in the *FOO* style
6729 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6730 as specified by ANSI.
6731 * *RANDOM-STATE* is no longer automatically initialized from
6732 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6733 default behavior of the system is to repeat its behavior every time
6734 it's run. If you'd like to change this behavior, you can always
6735 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6736 old convention there was no comparably easy way to get the system to
6737 repeat its behavior every time it was run.
6738 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6739 FTYPE declarations has been removed, in favor of their ANSI
6740 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6741 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6742 the types of their sequence arguments can be determined at compile time.
6743 This is done through a new open code expansion for MAP which eliminates
6744 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6745 argument types can be determined at compile time.
6746 * The optimizer now transforms COERCE into an identity operation when it
6747 can prove that the coerced object is already of the correct type. (This
6748 can be a win for machine generated code, including the output of other
6749 optimization transforms, such as the MAP transform above.)
6750 * Credit information has been moved from source file headers into CREDITS.
6751 * Source file headers have been made more standard.
6752 * The CASE macro now compiles without complaining even when it has
6755 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6757 * (Note that the way that the PCL macroexpansions were rewritten
6758 to accommodate the change in DEFGENERIC below breaks binary
6759 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6760 not run under sbcl-0.6.2. Once we get out of alpha releases,
6761 i.e. hit release 1.0.0, we'll probably try to maintain binary
6762 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6763 and sbcl-1.4.4. Until then, however, it might be fairly common
6764 for maintenance releases to break binary compatibility.)
6765 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6767 * The reporting of unhandled signals has been changed to print some
6768 explanatory text as well as the report form. (Previously only
6769 the report form was printed.)
6770 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6771 it defines, so that the compiler no longer issues undefined function
6772 warnings for compiled-but-not-yet-loaded generic functions.
6773 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6774 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6775 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6776 section of the ANSI spec are supported.
6777 * The "" nickname for the "KEYWORD" package has been removed.
6778 The reader still handles symbol tokens which begin with a package marker
6779 as keywords, but it doesn't expose its mechanism for doing so in the
6780 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6781 * The system now issues STYLE-WARNINGs for contradictory TYPE
6782 proclamations. (Warnings for contradictory FTYPE proclamations would
6783 be nice too, but those can't be done usefully unless the type system
6784 is made smarter about FUNCTION types.)
6785 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6786 systematized, so that "*target-*.lisp is supposed to exist only on the
6787 target and imply that there's a related file which exists on the
6788 host, and *host-*.lisp is supposed to exist only on the host and imply
6789 that there's a related file which exists on the target. This involves a
6790 lot of renaming. Hopefully the acute confusion caused by the renaming
6791 will be justified by the reduction in chronic confusion..
6792 ** runtime-type.lisp -> early-target-type.lisp
6793 ** target-type.lisp -> late-target-type.lisp
6794 ** early-host-format.lisp -> early-format.lisp
6795 ** late-host-format.lisp -> late-format.lisp
6796 ** host-error.lisp -> misc-error.lisp
6797 ** early-error.lisp -> early-target-error.lisp
6798 ** late-error.lisp -> late-target-error.lisp
6799 ** host-defboot.lisp -> early-defboot.lisp
6800 ** code/misc.lisp -> code/target-misc.lisp
6801 ** code/host-misc.lisp -> code/misc.lisp
6802 ** code/numbers.lisp -> code/target-numbers.lisp
6803 ** code/early-numbers.lisp -> numbers.lisp
6804 ** early-host-type.lisp -> early-type.lisp
6805 ** late-host-type.lisp -> late-type.lisp
6806 ** host-typep.lisp -> typep.lisp
6807 ** load.lisp -> target-load.lisp
6808 ** host-load.lisp -> load.lisp
6809 ** host-disassem.lisp -> disassem.lisp
6810 ** host-insts.lisp -> insts.lisp
6811 ** byte-comp.lisp -> target-byte-comp.lisp
6812 ** host-byte-comp.lisp -> byte-comp.lisp
6813 ** host-signal.lisp -> signal.lisp
6814 ** host-defstruct.lisp -> defstruct.lisp
6815 ** late-target-type.lisp -> deftypes-for-target.lisp
6816 Furthermore, several other previously target-only files foo.lisp (e.g.
6817 hash-table.lisp and random.lisp) have been split into a target-and-host
6818 foo.lisp file and a target-only target-foo.lisp file, with their key type
6819 definitions in the target-and-host part, so that the cross-compiler will
6820 know more about target types.
6821 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6822 gone away. In their place are various *BACKEND-FOO* variables
6823 corresponding to the slots of the old structure.
6824 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6825 into the target SBCL has been fixed.
6826 * The chill.lisp system for loading cold code into a running SBCL
6828 * Support for the CMU CL "scavenger hook" extension has been removed.
6829 (It was undocumented and unused in the CMU CL sources that SBCL was
6830 derived from, and stale in sbcl-0.6.1.)
6831 * Various errors in the cross-compiler type system were detected
6832 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6833 (enabling various consistency checks). Many of them were fixed,
6834 but some hard problems remain, so the compiler is back to
6835 running without *TYPE-SYSTEM-INITIALIZED* for now.
6836 * As part of the cross-compiler type system cleanup, I implemented
6837 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6838 * I have started adding UNCROSS calls throughout the type system
6839 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6840 on cross-compiler input files will be able to go away, and various
6842 * CONSTANTP now returns true for quoted forms (as explicitly required
6845 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6847 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6848 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6849 (MAKE-LIST -1). In the longer term, it ought to become true
6850 that declarations are assertions even at SAFETY 1. For now, it's not
6851 quite true even at SAFETY 3, but it's at least more nearly true..
6852 (Note that this change seems to increases the size of the system by
6853 O(5%) and to decrease the speed of the compiler by 20% or more.)
6854 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6855 for the problem of printing dozens of lines of distracting information
6856 about low-level system machinery as part of the top stack frame
6857 on entry to the debugger when an undefined function was called.
6858 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6859 is not reset to COMMON-LISP-USER.
6860 * Compilation of stuff related to dyncount.lisp has been made conditional
6861 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6862 smaller. The various dyncount-related symbols have been moved into
6863 a new "SB-DYNCOUNT" package.
6864 * tty-inspect.lisp has been renamed to inspect.lisp.
6865 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6866 feature has gone away. (When we eventually port to other flavors of
6867 libc and/or Unix, we'll try to make the differences between flavors
6868 invisible at the user level.)
6869 * Various other *FEATURES* tags, and/or their associated conditionals,
6870 have been removed if obsolescent, or given better documentation, or
6871 sometimes given more-mnemonic names.
6873 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6875 * tidied up "make.sh" script
6876 * tidied up system directory structure
6877 * better "clean.sh" behavior
6878 * added doc/FOR-CMUCL-DEVELOPERS
6879 * many many small tweaks to output format, e.g. removing possibly-confusing
6880 trailing #\. character in DESCRIBE-INSTANCE
6881 * (EQUALP #\A 'A) no longer signals an error.
6882 * new hashing code, including EQUALP hashing
6883 * tidied up Lisp initialization and toplevel
6884 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6885 * command line argument processing
6886 * added POSIX-GETENV function to deal with Unix-ish environment variables
6887 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6888 terminating SBCL on EOF
6889 * non-verbose GC by default
6890 * There is no more "sbcl" shell script; the sbcl file is now the C
6891 runtime executable (just like CMU CL).
6892 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6894 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6895 symbol and package information as Lisp native symbol and package objects
6896 instead of strings naming symbols and strings naming packages. This way,
6897 whenever packages are renamed (as in warm init), debug information is
6898 transformed along with everything else.
6899 * tweaked the optimization policy declarations which control the building
6900 of SBCL itself. Now, among other things, the system no longer saves
6901 source location debugging information. (This helps two problems at once
6902 by reducing SBCL size and by keeping SBCL from trying to look for its
6903 sources -- which may not exist -- when reporting errors.)
6904 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6905 debugging and testing purposes
6906 * cleaned up printing, making the printer call PRINT-OBJECT for
6907 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6908 methods, giving nearly-ANSI behavior
6909 * converted almost all special variables to use *FOO* naming convention
6910 * deleted PARSE-TIME functionality, since it can be done portably
6911 * moved some files out of cold init into warm init
6912 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6914 * regularized formatting of source files
6915 * added an install.sh script
6916 * fixed ridiculous memory usage of cross-compiler by making
6917 compiler/alloc.lisp not try to do pooling unless it can hook
6918 itself into the GC of the cross-compilation host. Now the system
6919 builds nicely on my old laptop.
6920 * added :SB-ALLOC in target-features.lisp-expr
6921 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6922 was not implemented)
6923 * re-did condition handling and note reporting in the compiler. Notes
6924 are no longer handled by signalling conditions. Style warnings
6925 and warnings are handled more correctly and reported in such a way
6926 that it's easy to find one or the other in your output (so that you
6927 can e.g. figure out which of many problems caused COMPILE-FILE to
6929 * changed the severity of several compiler warnings from full WARNING
6930 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6931 compiler note reporting so that it doesn't use the condition system
6932 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6933 COMPILE-FILE command)
6934 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6935 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6936 no longer supported, since their implementation was deeply intertwingled
6937 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6938 * removed bogus "support" for compiler macros named (SETF FOO), and
6939 removed the compiler macro for SETF INFO (but only after making a fool
6940 of myself on the cmucl-imp mailing list by posting a bogus patch for
6941 DEFINE-COMPILER-MACRO..)
6942 * Compiled files containing forms which have side effects on the Lisp
6943 reader (such as DEFPACKAGE forms) are now handled more correctly.
6944 (Compiler queuing of top level lambdas has been suppressed by setting
6945 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6946 * deleted various currently-unused source files, e.g. gengc.lisp. They
6947 may be added back at some point e.g. when porting to other architectures,
6948 but until they are it's distracting to distribute them and to try to
6950 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6951 there were so many of them they're just distractions, and UNCROSS is
6952 known to be able to handle the current sources
6953 * moved PROFILE functionality into TRACE, so that it will be clear
6954 how the wrapping and unwrapping of functions when you profile them
6955 interacts with the wrapping and unwrapping of functions when you
6956 trace them. (Actually, the functionality isn't there yet, but at least
6957 the interface specification is there. Hopefully, the functionality will
6958 arrive with some future maintenance release.)
6959 * removed host-oops.lisp
6960 * changed signature of QUIT function to allow UNIX-CODE argument
6961 * fixed READ-SEQUENCE bug
6962 * tweaked verbose GC output so that it looks more like the progress
6963 output that ANSI specifies for functions like LOAD
6964 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6965 * added <http://sbcl.sourceforge.com> to the banner information printed by