1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.8:
3 * enhancement: disassemble now annotates some previously missing static
4 functions, like LENGTH.
5 * optimization: calls to static functions on x86-64 use less instructions.
6 * optimization: compute encode-universal-time at compile time when possible.
7 * optimization: when referencing internal functions as #'x, don't go through
8 an indirect fdefn structure.
9 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
10 * optimization: (mod fixnum) type-checks are performed using one unsigned
11 comparison, instead of two.
12 * bug fix: problems with NCONC type derivation (reported by Jerry James).
13 * bug fix: EXPT type derivation no longer constructs bogus floating-point
14 types. (reported by Vsevolod Dyomkin)
15 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
16 addrinfo. (lp#1187041, patch by Jerry James)
17 * bug fix: uninitialized type-error conditions can now be printed.
19 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
20 listening, allowing several tests to run in parallel.
21 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
22 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
24 * bug fix: Specialised SIMD-PACK types can be negated.
25 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
26 reported by Eric Marsden)
28 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
29 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
30 ROOM, plus a few SB-INTROSPECT functions) has been completely
31 rewritten; it may now exhibit different bugs than before.
32 * new feature: minimal runtime/compiler intrastructure support for SSE
33 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
34 feature :sb-simd-pack. This should enable intrinsics extensions as
35 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
36 for maintaining a branch for so long.
37 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
38 the working directory of the spawned process.
39 (lp#791800) (patch by Matthias Benkard)
40 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
41 stack-allocated on PPC.
42 * enhancement: "fixed objects" can now be stack-allocated on PPC.
43 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
44 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
45 also returns VOPs which do not translate any functions, and finds
46 defoptimizer types ir2convert and stack-allocate-result.
47 * enhancement: better type derivation for APPEND, NCONC, LIST.
49 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
50 heap in a manner similar to the GC rather than its previous ad-hoc
51 scheme, and is therefore no less and possibly more accurate.
52 * fixes and enhancements related to Unicode:
53 ** the character database information has been updated to Unicode 6.2;
54 ** support for canonical and compatibility decomposition of characters has
55 been added, along with support for primary composition;
56 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
57 NFKD) has been included;
58 ** querying the character database for code points not defined by Unicode
59 gives less wrong answers (lp#1178038, reported by Ken Harris)
60 * enhancement: print intermediate evaluation results for some ASSERTed
61 expressions. (lp#789497) (patch by Alexandra Barchunova)
62 * enhancement: x86-64 disassemblies are annotated with unboxed constant
63 values when there are references to (RIP-relative) unboxed constants.
64 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
65 of quadratically with the size of the input in the worst case.
67 * bug fix: handle errors when initializing *default-pathname-defaults*,
68 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
69 decoding errors, or directories being deleted.
70 * bug fix: Loading a core with a discontiguous dynamic space now correctly
71 computes the amount of dynamic space used.
72 * bug fix: disassembler missing ",8" on SHLD
73 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
74 that provide an "invalid" stack frame link for the signal handler
75 itself now use the saved-fp-and-pc mechanism to pick up from the stack
76 frame in the interrupt (signal) context. This is known to affect
77 threaded FreeBSD/x86-64.
78 * bug fix: some LOOP statements couldn't be compiled.
80 * bug fix: sb-sequence:dosequence works on literal vectors.
81 * bug fix: errors in generic arithmetic show the assembly routine's
82 caller on x86 and x86-64. (lp#800343)
83 * bug fix: Compile-time type errors should never result in COMPILE-FILE
85 * bug fix: Known bad local calls do not cause strange failures when
86 emitting or dumping code. (lp#504121)
87 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
88 codegen errors: type checks are inserted as necessary. (lp#1177703)
89 * bug fix: Unsigned modular arithmetic is correctly converted into signed
90 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
91 * bug fix: a combination of inlined local function with &optional and
92 recursion no longer causes undescriptive compiler errors. (lp#1180992)
93 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
94 when testing for non-zero-ness.
95 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
97 * bug fix: Type mismatch for the value of conditional expressions are
98 correctly reported when detected at compile-time, instead of complaining
99 about a constant NIL (similar for non-EQ-comparable catch tags).
100 * bug fix: Referring to INLINE global functions as values should not result
101 in a compilation failure. (lp#1035721)
102 * optimization: faster ISQRT on fixnums and small bignums
103 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
104 * optimization: On x86-64, the number of multi-byte NOP instructions used
105 for code alignment is now always minimal.
106 * optimization: On 64-bit targets, the compiler generates much faster
107 code for type checks for types known at compile time that are smaller
108 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
109 their COMPLEX variants.
110 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
111 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
112 * optimization: ROOM no longer conses so egregiously on non-x86oid
114 * optimization: associative bitwise operations reassociate patterns like
115 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
117 * optimization: quasiquote expressions now perform more constant folding,
118 instead of consing equal lists at runtime. (lp#1026439)
119 * optimization: local call analysis of inlined higher-order function
120 should converge more quickly, resulting in better code for complex
122 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
123 integer constants are handled more cleverly, especially when they
124 can be represented as sign-extended (signed-byte 32). (Based on a
125 patch by Douglas Katzman)
126 * optimization: IF/IF conversion should reliably result in sane code
127 when (some of) the results of the inner IF are always false or
129 * optimization: On x86oids, variable right shifts of machine words are
130 compiled into straight SAR/SHR, instead of going through the generic
133 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
134 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
136 * bug fix: :allocation slot option works for condition slots
138 * bug fix: redefining conditions does not lead to multiple evaluations of
139 hairy slot initfunctions anymore (lp#1164969)
140 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
142 * bug fix: function constants now work as initforms and default initarg
143 values of conditions (lp#539517)
144 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
145 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
146 * bug fix: no more bogus ## references when pretty printing backquoted
147 forms with non-trivial structure sharing. (lp#1161218)
148 * bug fix: Don't signal an error on (setf (documentation nil 'function)
149 "doc"). Signal a style-warning instead when trying to set documentation
150 of NIL for all other documentation types. (Reported by Zach
151 Beane; regression since 2e52fa05.)
152 * bug fix: modular arithmetic involving large constants and conditionals
153 should no longer result in spurious dead code elimination. (Reported by
155 * bug fix: our mach exception handler can seemingly called very early in
156 the program execution process on OS X 10.8.0. Try and handle that case
157 robustly, without potentially leaking mach ports too much.
158 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
160 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
161 * enhancement: the continuable error when defknown-ing over extant
162 fndb entries can be ignored by passing :overwrite-fndb-silently t
163 as a keyword argument to sb-c:defknown (after attributes). Useful
164 to allow defknown to be re-loaded. Use with :allow-other-keys t
165 for backward compatibility.
166 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
168 * bug fix: Prevent a make-array transform from modifying source forms
169 causing problems for inlined code. Thanks to Bart Botta.
170 (regression since 1.0.42.11-bis)
171 * bug fix: clear-output calls the correct gray stream routine,
172 sb-gray:stream-clear-output. (lp#1153257)
173 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
175 * bug fix: Better error messages for package operations (lp#1154776)
176 * bug fix: delete-package on a nonexistent package should signal a cerror.
177 (regression since 1.0.37.44).
178 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
179 (lp#1154946, lp#1072112)
180 * bug fix: compiling make-array no longer signals an error when the
181 element-type is an uknown type, a warning is issued instead.
182 Thanks to James Kalenius (lp#1156095)
183 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
184 produces wrong results for some inputs. (Thanks to Jan Moringen.)
187 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
188 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
190 * new feature: package local nicknames. See manual for details.
191 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
192 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
193 * enhancement: easier to use restarts for resolving name-conflicts
194 resulting from IMPORT, EXPORT, or USE-PACKAGE.
195 * enhancement: variant DEFPACKAGE forms now signal a full error with
196 restarts provided for resolving the situation. (lp#891351)
197 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
198 DEFPACKAGE forms can now signal a full error with restarts provided for
199 resolving the situation. See manual for details. (lp#891351)
200 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
201 (Thanks to Anton Kovalenko.) (lp#1102748)
202 * enhancement: backtrace improvements
203 ** secondary CLOS dispatch functions have better debug names (lp#503081)
204 ** easier to read method names in backtraces. See
205 SB-DEBUG:*METHOD-FRAME-STYLE*.
206 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
207 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
208 SB-DEBUG:BACKTRACE-AS-LIST.
209 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
210 information is available in less intrusive form as frame annotations.
211 * enhancement: SB-POSIX now provides MAP-ANON.
212 * enhancement: test-suite results are colorized, failures in red, unexpected
213 success in green. Works on Windows and on terminals with ANSI escape code
214 support. Can be disabled with --no-color.
215 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
216 (thanks to James M. Lawrence)
217 * bug fix: no more unused variable style warnings from RESTART-CASE
218 macroexpansion (lp#1113859)
219 * bug fix: no more unused variable style warnings when loading
220 sb-bsd-sockets.asd (lp#1114681)
221 * bug fix: deleting a package removes it from implementation-package
222 lists of other packages.
223 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
224 This does not fix the occasional "interrupt already pending" issue, though.
225 * bug fix: (setf (documentation 'x 'function)) and
226 (setf (documentation #'x t)) set documentation in different places.
227 (regression since 1.0.43.63)
228 * bug fix: build on newer glibc. (lp#1095036)
230 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
231 * optimization: LOOP expressions using "of-type character" have slightly
232 more efficient expansions.
233 * bug fix: very long (or infinite) constant lists in DOLIST do not result
234 in very long compile times or heap exhaustion anymore. (lp#1095488)
235 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
236 * bug fix: adjust-array ignored :initial-element for simple-vectors.
238 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
239 longer cause infinite loops (on circular data) or violate eqlity
240 constraints. (lp#1099708)
241 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
243 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
244 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
246 * enhancement: support for C-c to interrupt the foreground thread
247 on Windows. (Thanks to Anton Kovalenko.)
248 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
249 * enhancement: Safepoint builds on POSIX platforms can now optionally be
250 built without pseudo-atomic sequences and their run-time overhead.
251 * enhancement: Threads created outside of Lisp can enter Lisp through
252 alien callbacks and appear as Lisp threads for the duration of that
253 function invocation. On safepoint builds only.
254 * enhancement: Miscellaneous improvements to namestrings and underlying
255 calls to OS functions for file system access on Windows. (Thanks to
257 * enhancement: The MSI installer support for Windows now uses Windows
258 Installer XML at least version 3.5 and includes various usability
259 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
260 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
261 on Windows. (Thanks to Anton Kovalenko.)
262 * enhancement: The Windows backend now supports the x86-64 platform.
263 (Thanks to Anton Kovalenko.)
264 * bug fix: fasls are now once again directly executable (on platforms
265 supporting shebang lines, with a suitably-installed sbcl).
266 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
267 * bug fix: Fix CAS access to slots of direct instances of structure classes
268 in the presence of subclasses sharing the same conc-name.
269 * bug fix: Logical pathname namestrings on Windows have been changed to
270 be lower-case, to minimize differences between POSIX and Windows.
272 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
273 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
274 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
275 (NT 5.0) is no longer being maintained.
276 * notice: Starting with this version, SBCL on Windows no longer supports
277 building with disabled thread support.
278 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
279 * enhancement: New feature sb-dynamic-core allows the runtime to be
280 rebuilt or relocated without requiring changes to the core file on
281 all linkage table platforms. Required on Windows. (Thanks to Anton
283 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
284 * enhancement: I/O on Windows unnamed pipes is interruptible
285 asynchronously using interrupt-thread, timers when running on Windows NT
286 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
288 * enhancement: Support for the experimental safepoint-based stop-the-world
289 protocol on the PowerPC platform.
290 * bug fix: Non-blocking reads from the Windows console were not necessarily
291 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
292 * bug fix: stability of threads on Windows has been improved upon through
293 an updated stop-the-world protocol (thanks to Anton Kovalenko).
295 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
296 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
297 (COMPILE and COMPILE-FILE still do.)
298 * optimization: the SPARC backend now supports the precise generational
299 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
300 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
301 * enhancement: add experimental support for the SB-THREAD feature and the
302 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
303 Threads are enabled by default, and this version of SBCL is considered
304 to be the last and final release to officially support building with
306 * optimization: The compiler no longer rotates loops in some cases where
307 this transformation actually lead to worse code being generated.
308 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
309 symbol-macros by lexical bindings.
310 * bug fix: stack allocation was prevented by high DEBUG declaration in
312 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
313 (thanks to SANO Masatoshi)
314 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
315 :JUNK-ALLOWED was true.
316 * bug fix: type derivation inferred overly conservative types for
317 unions of array types. (lp#1050768)
319 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
320 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
321 source annotation of DISASSEMBLE output. Defaults to T.
322 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
323 WAIT-P argument added to WITH-RECURSIVE-LOCK.
324 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
326 * enhancement: Optional features (not enabled by default) allow the
327 use of signals for inter-thread synchronization to be reduced on certain
328 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
329 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
330 to test these experimental features. Known remaining bugs include minor
331 thread safety issues, less timely freeing of memory by GC, and certain
332 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
333 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
334 comparisons, particularly on almost-sorted inputs.
335 * bug fix: Reading floats with large exponents no longer takes too much time
336 before reporting that the exponent is too large.
337 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
338 correctly when the received datagram is larger than the provided buffer.
339 (lp#1023438, thanks to Robert Uhl)
340 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
341 a SYMBOL-VALUE form with a constant symbol argument.
342 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
343 into a DEFCAS defined place was used as the place.
344 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
345 for from bit-vectors.
346 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
347 lead to internal errors or crashes (lp#1058799).
348 * documentation: a section on random number generation has been added to the
351 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
352 * enhancement: implicit generic function warnings now specify the package
353 in which the new generic function is being created.
354 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
355 updates of CAS-able places (similar to Clojure's swap!).
356 * enhancement: run-program no longer decodes and re-encodes environment when
357 :environment argument is not provided. (lp#985904)
358 * enhancement: errors during compiler-macro expansion no longer cause
359 runtime errors, only a compile-time warning, otherwise behaving as if
360 the compiler macro had declined to expand.
361 * optimization: On x86-64, code alignment of block headers is done with
362 multi-byte NOPs now instead of repetitions of the single-byte NOP.
363 * optimization: MAP-INTO is substantially faster when the target sequence is
364 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
365 thanks to James M. Lawrence)
366 * optimization: the compiler no longer heap-conses to check exits in cases
367 where the exit function is dynamic extent, or when it can prove the exit
368 function cannot escape. (lp#1002534)
369 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
370 element type, and vectors that aren't SIMPLE-ARRAYs.
371 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
372 speed (around 1/3 the time in some cases), and a little better in terms of
373 comparison calls. (Thanks to Takeru Ohta)
374 * bug fix: On SPARC, a limitation on the number of code constants emittable
375 by the compiler has been lifted, allowing certain long functions to
376 compiled and assembled which had previously been unsupported; fixes
377 cl-bench on this ISA (lp#1008996).
378 * bug fix: potential for infinite recursion during compilation of CLOS slot
379 typechecks when dependency graph had loops. (lp#1001799)
380 * bug fix: error forms reported with some program-errors were not escaped
382 * bug fix: functions from EVAL are now on more equal footing with functions
383 from COMPILE. (lp#1000783, lp#851170, lp#922408)
384 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
385 objects as its :METHOD-COMBINATION argument, not just lists designating
386 method combinations. (lp#936513)
387 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
389 * bug fix: restore build on solaris/sparc. (lp#1008506)
390 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
391 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
392 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
393 as keyword arguments no longer accidentally match unevaluated symbols
395 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
396 parameter was zero, now it signals an error. (lp#905817, fixed since
398 * bug fix: run-program with :pty t no longer makes the pty as the process's
400 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
403 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
404 * RANDOM enhancements and bug fixes:
405 ** bug fix: the range and distribution of random integers could be
406 catastrophically wrong when the compiler derived the type of its
407 argument as a disjoint set of small integers.
408 ** bug fix: the distribution of random integers is now completely
409 uniform even when the specified limit is not a power of two.
410 (Previously some values could be about 0.1 % more probable than
411 others in the worst case.) (lp#309467)
412 ** RANDOM on large integer arguments is generally faster and conses
413 less than before; this is visible for fixnums above a length of
414 about 24 bits, but extremely so for bignums: the old implementation
415 used time and space quadratical in the size of the argument there,
416 the new one is linear.
417 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
418 main entry point, SB-EXT:QUIT is deprecated.
419 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
420 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
421 * enhancement: FASL loading no longer grabs the world-lock.
422 * enhancement: GENCGC reclaims space more aggressively when objects being
423 allocated are a large fraction of the total available heap space.
425 * enhancement: backtraces show the correct number of arguments for frames
426 called with too many arguments.
427 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
429 * enhancement: ASDF has been updated 2.21.
430 * optimization: fewer uses of full calls to signed modular functions.
432 * optimization: typechecking alien values is typically 5 x faster.
433 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
435 * bug fix: file compilation performance issues when dumping subtypes
436 of CHARACTER (lp#994487)
437 * bug fix: fixed disassembly of some SSE instructions on x86-64.
438 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
439 OPEN. (lp#969352, thanks to Kambiz Darabi)
440 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
442 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
443 classoid even if X was not the proper name of the class. (lp#941102)
444 * bug fix: declaration leakage between lexical environments due to careless
445 use of NCONC in MAKE-LEXENV. (lp#924276)
446 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
447 *default-pathname-defaults* contains NAME or TYPE components.
448 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
449 from CL package, e.g. (loop . 10).
450 * bug fix: run-program with existent or non-existent files for :output or
451 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
452 returns NIL instead of signalling an obscure error.
453 * bug fix: fix miscompilation of some logand forms with large constant
454 arguments. (lp#974406)
455 * bug fix: account for funcallable-instance objects properly in ROOM.
456 * bug fix: incorrect octets reported for c-string decoding errors.
458 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
460 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
461 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
462 allowing faster release of memory back to the OS. (lp#991293)
463 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
464 existing deadline for the dynamic scope of its body.
465 * bug fix: compiler-internal interval arithmetic needed to be more
466 conservative about open intervals when operated on by monotonic but not
467 strictly-monotonic functions. (lp#975528)
468 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
469 it's also slightly faster. (lp#998926)
470 * bug fix: better error messages for malformed declarations.
472 * bug fix: define-condition didn't return the name of the defined condition.
474 ** improved docstrings: REPLACE (lp#965592)
476 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
477 * bug fix: fix copy-structure. When copying from stack to heap, garbage
478 could end up in the heap making GC unhappy.
479 (Thanks to James Knight, lp#911027)
481 ** SBCL can now be built using Clang.
482 ** ASDF has been updated 2.20.
483 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
484 * bug fix: don't complain about a too-hairy lexical environment for inlining
485 when the function has never been requested for inlining. (lp#963530)
487 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
488 * enhancements to building SBCL using make.sh:
489 ** --fancy can be specified to enable all supported feature enhancements.
490 ** --with-<feature> and --without-<feature> can be used to specify
491 which features to build with.
492 ** --arch option can be used to specify the architecture to build for.
493 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
494 full-blows cross-compilation.)
495 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
496 which allows specifying name of the default interning package for the
498 * enhancement: when *READ-EVAL* is true, arrays with element type other than
499 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
500 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
501 null alien when malloc() fails. (lp#891268)
502 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
503 conditions can be conveniently accessed through function with the same
504 name, analogously to CONTINUE.
505 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
506 from the printer by type, causing an error marker to be printed instead.
507 (Thanks to Attila Lendvai)
508 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
509 generally behave better when errors occur during printing.
510 * enhancement: the test runner now takes a --report-skipped-tests argument
511 to report the individual tests skipped as well as the number of skipped
513 * enhancement: undefined functions now appear in backtraces as ("undefined
514 function") instead of ("bogus stack frame") on x86oids.
515 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
516 deadlock errors are reported in an easier-to-decipher manner.
517 * enhancement: DESCRIBE on type designators reports the expansion in more
519 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
520 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
521 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
522 * enhancement: better disassembly of segment-prefixes on x86 and other
523 instruction prefixes (e.g. LOCK) on x86 and x86-64.
524 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
525 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
526 * optimization: SUBSEQ on vectors of unknown element type is substantially
528 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
529 be stack-allocated. (lp#902351)
530 * optimization: the compiler is smarter about representation selection for
531 floating point constants used in full calls.
532 * optimization: the compiler no longer refuses to coerce large fixnums to
533 single floats inline, except on x86 where this limitation is still
535 * optimization: truncation operations on integers with constant divisor
536 arguments 1 and -1 are optimized away.
537 * bug fix: deadlock detection could report the same deadlock twice, for
538 two different threads. Now a single deadlock is reported exactly once.
539 * bug fix: interval-arithmetic division during type derivation did not
540 account for signed zeros.
541 * bug fix: compiler error when typechecking a call to a function with
542 non-constant keyword arguments.
543 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
544 * bug fix: condition slot accessors no longer cause undefined function
545 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
546 form that defines them. (lp#896379)
547 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
549 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
550 bogusly report NIL, T.
551 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
552 required arguments ignored and performed assignments to others.
554 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
555 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
556 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
557 * bug fix: redefining a function whose previous definition contained an
558 unknown type no longer causes a style-warning. (lp#806243)
559 * bug fix: undefined functions now appear in backtraces as ("undefined
560 function") instead of ("bogus stack frame") on non-x86oids.
561 * bug fix: backtraces are no longer cut off at ("undefined function") when
562 called under certain circumstances (involving a caller-allocated stack
564 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
565 systems. (regression since 1.0.53)
566 * bug fix: GC deadlocks from dladdr() on certain platforms.
567 * bug fix: broken standard streams no longer automatically cause recursive
568 errors on debugger entry.
569 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
570 (regression since 1.0.53)
571 * bug fix: attempts to stack allocate a required argument to a function with
572 an external entry point caused compiler-errors.
573 * bug fix: compiler notes for failed stack allocation for a function argument
574 no longer claim to be unable to stack allocate the function.
575 * bug fix: COERCE now signals a type-error on several coercions to
576 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
577 * bug fix: missing failure-to-stack-allocate compiler notes for some
578 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
579 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
581 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
583 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
584 * minor incompatible changes:
585 ** RENAME-FILE on a symbolic links used to rename the linked-to file
587 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
588 directory, but now signal an error instead. Use TRUENAME to resolve the
589 pathname if you wish to delete the linked directory, and DELETE-FILE if
590 you wish to delete the
591 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
592 symbols associated with it will trigger a compile-time warning.
593 * thread-related enhancements:
594 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
595 Many thanks to generous donors!)
596 ** Threading is now more reliable on non-Linux platforms. We still don't
597 consider threads on non-Linux platforms good enough to enable them by
598 default, but they're in a clearly better shape now.
599 ** Deadlines supported now on all platforms.
600 ** All blocking functions in the threading API now have a :TIMEOUT
602 ** Semaphore notification objects have been added to SB-THREAD.
603 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
604 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
605 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
606 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
607 using an API anologous to defining new SETFable places.
608 * GC-related enhancements and bug fixes:
609 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
610 and Gb suffixes. Default is megabytes as before.
611 ** on GENCGC targets, the default dynamic space size is now 512Mb for
612 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
613 exception, defaulting to mere 444Mb to fit under default ulimits.) The
614 new defaults are in place to prevent hitting swap on low-end systems.
615 Use build-time option --dynamic-space-size to build an SBCL with
616 another default, or the runtime option to adjust the size at startup: a
617 good size is at most equal to the amount of physical memory the system
619 ** on GENCGC targets, nursery and generation sizes now default to 5% of
621 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
622 refuses to create SIMPLE-FUN objects.
623 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
625 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
626 validation of pointer objects as GENCGC does, instead of a
627 comparatively weak bounds-check against the heap spaces.
628 * SB-BSD-SOCKETS bug fixes:
629 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
630 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
631 systems with getaddrinfo().
632 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
633 safe outside systems with getaddrinfo().
634 * enhancement: ASDF has been updated 2.019.
635 * enhancement: special-case TCO prevention for functions which never return
636 extended to untrusted types, keeping one more frame's worth of debug
637 information around in many cases.
638 * enhancement: debug-names of anonymous and local function are more
639 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
640 * enhancement: on win32, ABS of complex floats guards better against
641 overflows. (lp#888410)
642 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
643 process exiting with code 1. (lp#676987)
644 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
645 the system where on the filesystem the SBCL sources themselves are
646 located. (Thanks to Zach Beane)
647 * enhancement: the compiler is now able to derive tighter bounds for
648 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
649 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
650 correctly, even on wide-fixnum builds. (lp#887220)
651 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
652 resolved to directories.
653 * bug fix: type mismatch when assigning to lexical variables no longer
654 result in fasl-dumping internal type objects. (lp#890750)
655 * bug fix: type mismatch on (SETF AREF) and function return values no
656 longer result in fasl-dumping internal type objects.
657 * bug fix: With several combinations of argument types, for example (EXPT
658 <integer> <(complex double)>), EXPT now uses double-precision throughout
659 instead of partially calculating only to single-precision. (lp#741564;
660 thanks to Lutz Euler)
661 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
662 objects when interrupted by GC on PPC.
664 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
665 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
666 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
667 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
668 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
669 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
670 targets is now 63 bits (up from 61).
671 * enhancement: DESCRIBE now reports a lambda-list and source location
672 for complext setf-expanders.
673 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
674 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
675 of multiple-valued places to be set to NIL, instead of signalling an
676 error (per a careful reading of CLHS 5.1.2.3).
677 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
678 * bug fix: repair crash in x86oid darwin signal handling emulation
679 when built with certain compilers.
680 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
681 rotation arguments on x86-64. (lp#882151)
682 * bug fix: low-level control flow optimisations could result in bogus
683 code in functions with tail and non-tail calls to local functions on
685 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
686 to emit literal characters > (code-char 4095), for comparisons with
688 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
689 on 64 bit platforms. (lp#881445)
690 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
691 delete the wrong file when using relative pathnames. (lp#882877)
692 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
693 sequences and :KEY NIL.
695 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
696 * enhancement: ASDF has been updated to version 2.017.
697 * enhancement: the --core command line option now accepts binaries with
699 * enhancement: when built with :sb-core-compression, core files (regular
700 or executable) can be compressed with zlib. Use the :COMPRESSION
701 argument to SAVE-LISP-AND-DIE to specify a compression level.
702 * enhancement: --[no-]merge-core-pages determines whether the runtime
703 hints the operating system that identical core pages between SBCL
704 processes should share the same physical memory. Default is to only
705 enable this for compressed cores.
706 * optimization: SLEEP no longer conses.
707 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
708 or bit-vectors when using the standard pretty-print dispatch table.
709 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
711 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
712 AREF, CHAR, etc. (lp#826971)
713 * bug fix: compiler-errors causes by integer arguments with composed of
714 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
715 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
716 expressions. (lp#770184)
717 * bug fix: complex single float literals are correctly aligned when used
718 as arguments of arithmetic operators.
719 * bug fix: on 32-bit platforms, rounding of double floats larger than a
720 fixnum is correct. (reported by Peter Keller)
721 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
722 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
724 * bug fix: redefining classes such that slots with custom allocation are
725 added or removed works again.
727 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
728 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
729 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
730 MAKE-SOCKET-STREAM if using SERVE-EVENT.
731 * enhancement: added support for socket keepalive timeout intervals
732 and probe counts on Linux.
733 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
734 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
735 * enhancement: added new toplevel options --quit and --non-interactive
737 * enhancement: the Windows port of SBCL now builds and runs on Wine
738 (thanks to Anton Kovalenko).
739 * enhancement: more, and more correct, SSE instruction definitions on
740 x86-64 (thanks to Alexander Gavrilov).
741 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
742 to help the processor execute spin loops, when applicable. Currently
743 implemented for x86 and x86-64.
744 * optimization: unsigned integer divisions by a constant are implemented
745 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
746 * optimization: improved type-derivation for LOAD-TIME-VALUE.
747 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
748 instructions. (lp#814688)
749 * bug fix: COERCE to unfinalized extended sequence classes now works.
750 (reported by Jan Moringen; lp#815155)
751 * bug fix: a compiler error during typecheck generation, reported by Eric
753 * bug fix: obsolete instance protocol fires when shared slots are added
755 * bug fix: fixed-format floating point printing with scaling factors.
757 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
758 backtraces. (lp#818460)
759 * bug fix: better backtraces for interrupted syscall frames on x86.
761 * bug fix: SSE comparison instructions can be disassembled even when one
762 operand is in memory. (lp#814702)
763 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
764 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
765 type information associated with the VALUES form.
766 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
768 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
769 first write (lp#561642).
770 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
771 * bug fix: bound propagation involving conversion of large bignums to
772 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
774 * bug fix: &REST to &MORE conversion still works in unsafe call to known
775 functions; reported by Lutz Euler (lp#826459).
776 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
779 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
780 * enhancement: errors from FD handlers now provide a restart to remove
781 the offending handler.
782 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
784 * enhancement: location of user or system initialization file can now easily
785 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
786 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
787 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
788 the thunk, as a keyword argument, :arguments.
789 * enhancement: constraint propagation is simplified (and sped up) when
790 COMPILATION-SPEED > SPEED.
791 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
792 * enhancement: debugger understands &MORE arguments better.
793 * optimization: extracting bits of a single-float on x86-64 has been
794 optimized. (lp#555201)
795 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
796 when (> SPEED SPACE).
797 * optimization: local call trampolines (x86 and x86-64) are emitted
799 * optimization: implicit value cells for dynamic-extent closed-over bindings
800 on x86 and x86-64 can hold unboxed values as well.
801 * meta-optimization: improved compilation speed, especially for large
802 functions. (lp#792363 and lp#394206)
803 * bug fix: bound derivation for floating point operations is now more
804 careful about rounding possibly closing open bounds. (lp#793771)
805 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
806 backwards incompatible change in 1.0.48.27)
807 * bug fix: occasional debugger errors in when a type-error occured in a
808 function with dynamic-extent &rest list.
809 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
810 boa-construtors can be used to initialized structure slots.
811 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
812 (lp#795705, regression)
813 * bug fix: DIRECTORY works better on logical pathnames.
814 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
815 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
816 * bug fix: the compiler no longer constant-folds NaNs in
817 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
818 * bug fix: FORMAT now handles floating point rounding correct, eg.
819 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
821 * bug fix: style warning during lambda-list introspection of generic
822 functions with both optional and key argments.
823 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
825 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
828 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
829 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
830 interrupts for its body.
831 * enhancement: source locations are now available for files loaded as
832 source, compile-time-too evaluation, and initialization files.
833 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
834 virtual source-file information, eg. overriding input-file of COMPILE-FILE
835 when a temporary file is used for compilation.
836 * enhancement: ASDF has been updated to version 2.015.3.
837 * enhancement: backtraces involving frames from the default evaluator are
839 * enhancement: RUN-PROGRAM works with user-defined binary input and output
841 * enhancement: more informative compile-time warnings and runtime errors for
842 type-errors detected at compile-time.
843 * enhancement: deadlock detection for mutexes and spinlocks.
844 * enhancement: dynamic-extent for &rest lists stack allocate only their
845 spines, not their argumets. While portable code should not rely on this,
846 particularly in combination with inlining, it should make dynamic-extent
847 easier to use safely.
848 * enhancement: SB-POSIX improvements:
849 ** WNOHANG and WUNTRACED are exported.
850 ** SYSCALL-ERROR now also provides the name of the failing system call.
851 * enhancement: --script improvements:
852 ** errors on standard input, output, and error streams are handled and
853 cause scripts to exit silently, making them easier to use in shell
855 ** backtraces from scripts now go to standard error instead of the
856 terminal even if one is available.
857 ** --script can be an argument, causing the script to be loaded from
859 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
860 strings to foreign memory.
861 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
862 a file, making it easier to understand heap dynamics.
863 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
864 allows the compiler to automatically elide rest-list allocation so long as
865 the call sites are in functions that the compiler knows cannot escape.
867 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
868 especially in safe code when none of the required arguments have changed
870 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
871 uninterruptible, as well as blocking reads from socket streams created
872 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
873 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
874 from the to-char if the from-char is not a dispatch-macro character.
875 * bug fix: references to undefined variables in function calls that are
876 optimized away now signal a runtime error. (lp#722734)
877 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
878 types from a function defined in the same file. (regression from
880 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
882 * bug fix: spurious errors during QUIT when standard streams were closed.
884 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
885 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
886 years, is now no longer supported.
887 * enhancement: read() and write() have been added to SB-POSIX.
888 * enhancement: types of DEFSTRUCT constructors are proclaimed more
889 accurately, allowing better typechecking of call-sites.
890 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
891 are no longer caught. (reverted to pre 1.0.34 behaviour)
892 * optimization: slightly faster ISQRT. (lp#713343)
893 * bug fix: better support for Solaris /bin/sh in sh-based tests.
894 * bug fix: TRACE behaves better when attempting to trace undefined
895 functions. (lp#740717)
896 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
897 to (FUNCALL #'(LAMBDA ...) ...).
898 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
899 a compile-time error. (lp#720382)
900 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
902 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
903 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
904 optimization. (regression from 1.0.45.18/1.0.46.15)
905 * bug fix: package locks did not protects against compile-time side-effects
906 of DEFUN. (lp#675584)
907 * bug fix: --dynamic-space-size argument is validated more carefully.
909 * bug fix: memory fault from printing a malformed simple-condition.
911 * bug fix: redefining classes so that slot-definition classes change now
912 engages the obsolete instance protocol. (lp#766271)
913 * bug fix: constant improper lists could break source coverage recording.
915 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
918 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
919 * bug fix: fix mach port rights leaks in mach exception handling code on
920 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
922 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
923 * enhancement: redefinition warnings for macros from different files. (lp#434657)
924 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
925 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
926 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
927 processed using EVAL -- now the appropriate toplevel form is reported instead.
928 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
929 declarations. (lp#726331)
930 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
931 that NIL/NULL is excluded from the type.
932 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
934 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
936 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
937 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
938 stack-allocated values out of their dynamic-extent. (lp#310175)
939 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
940 x86-64 builds caused a type-error.
941 * bug fix: calling COMPILE with something else than a lambda-expression as the
942 second argument reports a more sensible error. (lp#718905)
943 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
944 are detected. (lp#520607)
945 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
947 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
948 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
949 methods. (regression from 1.0.45.18)
950 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
951 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
952 * bug fix: several foreign functions accepting string also accepted NIL and
953 consequently caused a memory fault at 0 now signal a type-error instead.
955 * bug fix: under rare circumstances, constraint propagation could rewrite a
956 variable reference to refer to a variable not in scope, causing an error
957 during physical environment analysis when attempting to close over the
958 variable. (lp#551227)
959 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
961 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
962 * enhancement: largefile support on Solaris.
963 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
964 arguments (lp#710017)
965 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
966 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
968 * optimization: ERROR and CERROR are approximately 5 times faster.
969 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
970 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
971 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
972 up instance creation in those cases.
973 * optimization: arithmetic operations with multiple constant arguments in now
974 have them reduced at compile-time. (lp#676414)
975 * optimization: determining current character position on string-streams for
976 pretty-printing was overly slow.
977 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
978 lifetime analysis to overwrite closed-over variables (lp#681092).
979 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
980 were not handled correctly (lp#713063).
981 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
983 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
984 mistake. (lp#667297).
985 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
986 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
987 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
988 unintern the wrong symbol with the same name. (lp#693796)
989 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
990 making it possible to restore the initial table if it has been messed up.
993 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
994 * enhancement: ~/ and ~user/ are treated specially in pathnames.
995 Refer to documentation for details.
996 * enhancement: ASDF has been updated to version 2.010.
997 * optimization: mutated closed-over variables that are only accessed by
998 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
999 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1000 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1001 * optimization: UNWIND-PROTECT cleanup functions are now declared
1003 * bug fix: backtracing function with &REST arguments now shows the full
1004 argument list. (lp#310173)
1005 * bug fix: return types for functions with complex lambda-lists are now
1006 derived properly (lp#384892)
1007 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1008 long string arguments slowed the compiler down to a crawl.
1009 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1010 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1011 in the DEFMETHOD body.
1012 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1013 messages, being instead replaced with the corresponding function name.
1014 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1015 operators. (lp#309448)
1017 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1018 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1019 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1020 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1022 * enhancement: default dynamic-space size can be configured at build-time
1023 without touching source, using the --dynamic-space-size argument to make.sh.
1024 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1025 qualities, and mentions ALWAYS-BOUND declarations.
1026 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1028 * enhancement: ASDF has been updated to 2.009.
1029 * enhancement: the system detects known type-erros in calls better,
1030 signalling a full warning about violated proclaimed FTYPEs and violations
1031 of derived FTYPEs within the same file, including self-calls.
1032 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1033 * optimization: constant-folding exploits numeric and character types, in
1034 addition member types.
1035 * optimization: numeric, character and member types that are inhabited by
1036 exactly one value are tested with EQL.
1037 * optimization: more conditional branches are eliminated during IR1.
1038 Branches are simplified before performing if/if-conversion, and simple
1039 equivalent branches (that only read the same constant or variable) are
1041 * improvements to the Windows port:
1042 ** change: canonical unparsing form for pathname namestrings now uses / as
1043 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1044 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1045 on Windows. (thanks to Kalyanov Dmitry)
1046 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1048 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1049 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1050 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1051 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1053 * bug fix: interrupts arriving during CL:OPEN caused an error.
1054 * bug fix: overeager character buffering could cause input to block
1055 spuriously when reading from a pipe (lp#643686)
1056 * bug fix: more efficient timer expiry should avoid starvation on systems
1057 where number of SIGALRMs per second is restricted. (lp#375515)
1058 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1059 * bug fix: compile-times no longer scale linearly with the size of
1060 quoted lists in source-code. (lp#654289)
1061 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1062 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1063 so badly. (lp#654485)
1064 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1065 an error for eg. STRUCTURE. (lp#458015)
1066 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1067 (lp#613871, thanks to Roman Marynchak)
1068 * bug fix: more reliable &REST list type derivation. (lp#655203)
1069 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1070 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1071 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1072 also declared NOTINLINE. (lp#655581)
1073 * bug fix: the compiler could attempt to emit constant left shifts of
1074 greater value than n-word-bits. (lp#309063)
1075 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1076 type information for the function being set. (lp#659220)
1077 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1078 containing self-calls were recompiled with a new signature, and failed
1079 to warn when a self-call using the old signature was left in. (lp#655126)
1080 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1081 :DEFAULT when the default external had character size other than 8 bits.
1083 * bug fix: derived types of functions in the same file were implicitly
1084 trusted, leading to potential heap corruption when those function were
1085 defined incompatibly. (lp#657499)
1086 * bug fix: existing ASDF source registries are ignored when building
1087 contribs (lp#659105)
1088 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1089 (lp#655824, thanks to Roman Marynchak)
1090 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1091 package-lock violation was detected. (lp#660752)
1092 * bug fix: the system can store different docstrings for a single function
1093 under different names. (lp#661631, regression from 1.0.29.24)
1094 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1095 properly. (lp#384801)
1096 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1097 of specified length could confuse the type derivation in unsafe code.
1099 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1100 fork with multiple Lisp threads running is made on every platform,
1101 not just Darwin. (lp#451111)
1102 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1103 around when core was saved, which could cause undefined behaviour when the
1105 * bug fix: Allow UNTRACE of functions that are no longer defined
1106 (lp#667657, thanks to Attila Lendvai)
1107 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1108 compile-time warning (lp#664373, thanks to Stas Boukarev)
1110 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1111 * incompatible change: FD-STREAMS no longer participate in the serve-event
1112 event-loop by default. (lp#316072)
1113 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1114 affects streams from CL:OPEN.
1115 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1116 default, but this is liable to change: applications needing serve-event
1117 for socket streams should explicitly request it using :SERVE-EVENTS T
1119 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1121 * enhancement: CLOS effective method functions and defclass slot typechecking
1122 function now have debug names for use in backtraces and profiles.
1123 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1125 * enhancement: symbols are printed using fully qualified names in several
1126 error and warning messages which are often associated with package
1127 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1128 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1129 thanks to Andrew Golding)
1130 * bug fix: reading /proc files on Linux works. (lp#425199)
1131 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1133 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1134 breaking code that tried to write the value of a printer control variable.
1135 (lp#581564, thanks to Stas Boukarev)
1136 * bug fix: WRITE compiler macro did not handle output stream designators
1137 correctly. (lp#598374, thanks to Stas Boukarev)
1138 * bug fix: better availability of names of foreign functions in backtraces
1139 on Linux. (lp#626962, thanks to Stas Boukarev)
1140 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1141 lp#627581, thanks to Josh Elsasser and Jim Wise)
1142 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1143 thanks to Josh Elsasser)
1144 * bug fix: using aliases for builtin classes as defmethod specializers
1145 without adding DEFTYPEs for them works. (lp#618387)
1146 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1148 * bug fix: legally dynamic-extent lists and vectors used as
1149 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1150 * bug fix: inline-expansion creating references to dead lambda-variables
1151 (lp#454681, thanks to Alexey Dejneka)
1152 * bug fix: better error message for bogus numerical arguments to RANDOM.
1153 (lp#598986, thanks to Stas Boukarev)
1154 * bug fix: the compiler occasionally inlined references from incompatible
1155 environments occurs. (lp#308951)
1156 * bug fix: the compiler threw an error when trying to compile a local
1157 function (labels or flet) known to take a specialized complex argument.
1158 (not in launchpad, reported by sykopomp in #lispgames)
1159 * bug fix: package-locks failed to protect against compile-time effects of
1160 DEFUN when the symbol previously had a macro definition. (lp#576637)
1161 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1162 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1163 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1164 * bug fix: evaluation in debugger REPL works using the global context when
1165 in frames that do not have sufficient debug information.
1166 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1168 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1170 * bug fix: interrupt taking longer than the requested period caused SLEEP
1171 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1173 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1175 ** Cross-compilation host is now specified to make.sh using
1176 command-line argument --xc-host=<command> instead of a positional
1177 argument. (thanks to Daniel Herring)
1178 ** Install location can be specified to make.sh using command-line
1179 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1180 * optimization: The default implementation of
1181 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1182 * enhancement: Explicit memory barrier operations are now available for use
1183 by multithreaded code. See documentation for details.
1184 * enhancement: Experimental support for threading on Linux/PPC.
1185 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1186 * bug fix: EXPT signals an error if first argument is a zero and second
1187 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1188 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1189 (lp#576594, thanks to Roman Marynchak)
1190 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1191 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1193 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1194 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1195 cached, leading to many fewer expensive calls to
1196 COMPUTE-APPLICABLE-METHODS.
1197 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1198 CLASS argument, search for and call an appropriate optimized ctor function
1200 * bug fix: WRITE always returns the correct value.
1202 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1203 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1204 * bug fix: Name conflicts between symbols passed as arguments to a single
1205 call to IMPORT no longer add multiple symbols with the same name to the
1206 package (detectable via DO-SYMBOLS).
1207 * bug fix: support building without the dlshim on darwin x86 and x86-64
1209 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1211 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1212 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1214 * bug fix: linkage-table entries on PPC now no longer overflow their
1215 space allocation (potentially causing crashes if they are written out
1217 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1218 platforms, preventing the GC from seeing stale pointers on the control
1219 stack in subsequent GCs (which would, and does, break invariants).
1220 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1221 * bug fix: Literal characters with code points greater than about 32767
1222 now work on PPC UNICODE builds.
1223 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1224 high order bits are explicitly cleared out. In some contrived situations,
1225 this could lead to wrong results in mixed real/complex float arithmetic.
1226 * bug fix: Fix function/macro redefinition warnings when building with
1227 clisp. (lp#576787, thanks to Josh Elsasser)
1228 * new platform: experimental support for ppc/openbsd (thanks to Josh
1230 * bug fix: Floating-point traps now work on ppc/linux.
1232 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1233 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1234 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1235 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1236 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1237 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1238 SB-THREAD:GRAB-MUTEX.
1239 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1240 contain additional data structures and tools for concurrent programming;
1241 at the moment it contains a lock-free queue, and a lock-free mailbox
1243 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1244 GET-MUTEX but takes &key rather than &optional parameters. Also added
1245 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1247 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1248 SB-THREAD:WAIT-ON-SEMAPHORE.
1249 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1251 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1252 conditions to defer the deadline for forever.
1253 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1255 * enhancement: errors from NO-APPLICABLE-METHOD and
1256 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1257 generic function call.
1258 * enhancement: SB-BSD-SOCKET improvements
1259 ** sockets and socket streams now have a more informative printed
1260 representation based on the corresponding SOCKET-NAME and
1262 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1264 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1265 CL:CLOSE when appropriate, and no longer disassociates the stream
1266 from the socket if close failed. (lp#543951)
1267 * improvements to the instrumenting profiler
1268 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1269 ** optimization: counters no longer use locks for the overflow mode.
1270 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1271 incurred an off-by-one miscount.
1272 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1273 * enhancement: improved DEFMETHOD pretty-printing.
1274 * enhancement: perform range reduction when arguments are too large for
1275 x87's transcendentals (instead of returning 0). (lp#327192)
1276 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1277 some of CL-PPCRE's macros. (lp#570079)
1278 * enhancement: our machine code is slightly less hostile to valgrind on
1280 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1281 to Robert Swindells and Aleksej Saushev)
1282 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1283 * bug fix: a rare case of startup-time page table corruption.
1284 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1285 to timeouts could be left in an inconsistent state.
1286 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1287 * bug fix: misoptimization of multiplication by one in
1288 (SB-C::FLOAT-ACCURACY 0) policies.
1289 * bug fix: miscounts in SB-PROFILE.
1290 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1291 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1292 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1293 up itself" (March 2010) for further details.
1294 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1295 against length of the list if the element is found before the specified
1296 END is reached. (thanks to Alec Berryman, lp#554385)
1297 * bug fix: errors signalled during package graph modification no longer
1298 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1299 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1300 :SB-DOC feature. (lp#552564)
1301 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1302 * bug fix: more robust runtime executable path detection. (lp#375549)
1303 * bug fix: GCD always returns positive values. (lp#413680)
1304 * bug fix: Converting division to multiplication by reciprocal handles
1306 * bug fix: We were too eager in eliding range reduction tests on x87.
1307 The maximal magnitude is 2^63, not 2^64.
1308 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1310 * bug fix: Maybe restore buildability on Alpha.
1311 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1313 * bug fix: RANDOM-STATE can be printed readably again.
1314 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1315 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1316 types) could result in type mismatches during compilation.
1318 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1319 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1320 stack frame thrown from.
1321 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1322 compiler optimization qualities inside dynamic extent of its body.
1323 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1324 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1326 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1327 constraint propgation, allowing better compilation eg. when used to
1328 access structures with WITH-SLOTS. (lp#520366)
1329 * optimization: the compiler is now more aware of the type of the underlying
1330 storage vector for multidimensional simple arrays resulting in better code
1331 for accessing such arrays.
1332 * optimization: passing NIL as the environment argument to TYPEP no longer
1333 inhibits optimizing it. (lp#309788)
1334 * optimization: more efficient register usage when handling single-float
1335 arguments on x86-64. (thanks to Lutz Euler)
1336 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1337 pre-allocated temporary vectors. (lp#496249)
1338 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1339 in :INITIAL-CONTENTS. (lp#523612)
1340 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1341 functions. (lp#524707)
1342 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1343 WITH-SLOTS usages during compilation.
1344 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1345 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1346 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1347 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1348 instruction (tested on x86oid linux with ud2-breakpoints).
1349 * bug fix: slam.sh now works on win32.
1350 * bug fix: better differences of numeric types. (lp#309124)
1351 * bug fix: arrays declared intersection and union types can have their
1352 upgraded element type derived. (lp#316078)
1353 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1354 threads started during profiling. (lp#472499)
1355 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1357 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1358 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1359 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1360 values instead of signaling an error. (lp#309093)
1361 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1363 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1364 declarations (lp#497321)
1365 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1366 and failed to detect circular lists (lp#452008)
1367 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1369 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1370 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1371 due to it, so that handlers can run.
1372 * bug fix: reparsing undefined types if they have become defined since
1373 parsing. (lp#309128)
1374 * bug fix: missing &REST type in a proclamation for a function with both
1375 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1376 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1377 expanded calls (lp#542174)
1378 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1379 than just at toplevel form.
1381 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1382 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1383 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1384 but work on type specifiers.
1385 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1386 to name a type specifier.
1387 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1388 specifier is valid where "valid" basically means "would be accepted as
1389 second argument of TYPEP".
1390 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1391 returns the function's declared, or derived FTYPE.
1392 * new feature: SB-POSIX now supports accessing the d_ino member of
1393 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1394 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1395 provide for seeding a RANDOM-STATE object with user-provided data or
1396 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1397 attempt to initialize the returned state from the operating system's
1398 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1399 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1400 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1401 * bug fix: Fix grammar and style issues for the docstrings of
1402 printer-related variables and functions. (Thanks to mon_key; launchpad
1404 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1406 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1407 in a row even though a handler defered the deadline long into the
1409 * bug fix: A deadline handler was run without interrupts enabled for a
1410 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1411 in infinitely spinning, non-killable threads.
1412 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1413 before reaching the erring stack frame.
1414 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1415 real power. (launchpad bug lp#525949)
1416 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1417 GENCGC platforms. (launchpad bug lp#529014)
1418 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1419 (launchpad bug lp#525916)
1420 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1421 (Thanks to Robert Goldman)
1423 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1424 * optimization: ROUND with a single single-float or double-float argument
1425 is properly inlined when possible.
1426 * optimization: Slightly better code is generated for integer<->float
1427 conversions and for single-float<->double-float conversions on x86-64.
1428 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1429 code for 32-bit and 64-bit rotations on x86-64.
1430 * bug fix: The install script changes the ownership of directories as well
1431 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1432 launchpad bug lp#508485)
1433 * bug fix: TRUNCATE with a single single-float or double-float argument is
1434 properly inlined when possible. (launchpad bug lp#489388)
1435 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1436 no longer causes a compiler error on x86 and ppc.
1437 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1438 always relative to *READTABLE* rather than the passed argument.
1440 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1441 * minor incompatible change: threading support is now enabled by default
1443 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1445 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1446 are now caught and reported just like errors during macroexpansion.
1447 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1448 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1449 * enhancement: ASDF systems can now depends on SB-QUEUE.
1450 * fixes and improvements related to Unicode and external formats:
1451 ** bug fix: error handling and restart usage in the ucs-2 external format
1453 ** there is now an implementation of the ucs-4 external format.
1454 ** the utf-16 and utf-32 external formats are supported.
1455 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1456 in the environment. setenv() and unsetenv() are also provided. (reported by
1457 Fare Rideau; launchpad bug lp#460455)
1458 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1459 loading. This ensures sensible errors for .FASL files from other
1460 implementations on case-insensitive filesystems. (reported by Willem
1461 Broekema; launchpad bug lp#489417)
1462 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1463 Willem Broekema; launchpad bug lp#489698).
1464 * bug fix: some minor code rearrangements to reenable warning-free building
1465 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1466 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1468 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1471 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1472 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1473 * improvement: support O_LARGEFILE access to files larger than 2GB on
1474 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1475 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1476 definitions for methods specializing on the passed class itself.
1477 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1478 definitions for methods specializing on the passed class itself, or on
1480 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1481 about itself during the build (e.g. for M-? in Slime), if this flag is
1482 enabled in customize-target-features.lisp. This will increase the core
1483 size by about 5-6mb, though, so it's mostly interesting to SBCL
1485 * new feature: various GENCGC tuning parameters have been experimentally
1486 documented and exported from SB-EXT. See documentation for details.
1487 * fixes and improvements related to Unicode and external formats:
1488 ** the Unicode character database has been upgraded to the
1489 Unicode 5.2 standard, giving names and properties to a number of new
1490 characters, and providing a few extra characters with case
1492 ** improvement: restarts for providing replacement input/output on coding
1493 errors for fd-stream external formats.
1494 ** improvement: where :<encoding> is a keyword corresponding to an
1495 external format the system supports, it is now possible to specify
1496 (:<encoding> :replacement <character>) as an external format which will
1497 automatically substitute <character> on encoding or decoding errors for
1498 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1500 ** improvement: the file streams underlying the standard streams (such as
1501 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1502 which uses the replacement mechanism to handle encoding errors,
1503 preventing various infinite error chains and unrecoverable I/O
1505 ** minor incompatible change: the utf-8 external format now correctly
1506 refuses to encode Lisp characters in the surrogate range (char-codes
1507 between #xd800 and #xdfff).
1508 ** fix a typo preventing conversion of strings into octet vectors
1509 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1511 ** fix a bug in the octet multibyte handling of decoding errors and the
1512 USE-VALUE restart. (launchpad bug lp#314939)
1513 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1514 restart on fd-stream decoding errors.
1515 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1516 error is near the end of file.
1517 ** fix a double-error case in unibyte octet conversions, when the first
1518 use of USE-VALUE is ignored.
1519 ** fix bugs in handling of undefined code points in unibyte encodings.
1520 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1521 streams after an UNREAD-CHAR.
1522 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1523 object is allocated in a boxed region of dynamic space.
1524 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1525 fork with multiple Lisp threads running is made, instead of going
1526 ahead with unpredictable consequences. (reported by Leslie Polzer)
1527 * bug fix: uses of slot accessors on specialized method parameters within
1528 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1529 error while finalizing the class. This fix may cause classes with slot
1530 accessors to be finalized later than previously. (reported by Lars Rune
1531 Nøstdal; launchpad bug lp#473699)
1532 * bug fix: restore buildability on the MIPS platform. (regression from
1533 1.0.30.38, reported by Samium Gromoff)
1534 * bug fix: inspecting closures is less likely to fail with a type error.
1535 * bug fix: no timer starvation when setting the system clock back.
1536 (launchpad bug lp#460283)
1537 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1538 standard pprint dispatch table as specified by CLHS.
1539 * bug fix: give CLISP a hint about a type declaration to enable it to build
1540 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1542 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1543 (reported by Attila Lendvai; launchpad bug lp#310132)
1544 * bug fix: distinguish in type specifiers between arrays that might be
1545 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1546 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1547 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1548 * bug fix: setting the value of a symbol-macro within a method in the
1549 presence of type declarations works properly again. (reported by Iban
1550 Hatchondo; launchpad bug lp#485019)
1552 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1553 * optimization: faster FIND and POSITION on strings of unknown element type
1554 in high SPEED policies. (thanks to Karol Swietlicki)
1555 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1557 * improvement: better error signalling for bogus parameter specializer names
1558 in DEFMETHOD forms (reported by Pluijzer)
1559 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1561 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1563 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1564 removes previous default initargs (reported by Lars Rune Nøstdal and
1566 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1567 lambda-lists. (reported by Peter Seibel)
1568 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1569 correctly when starting from an executable core without saved runtime
1570 options (reported by Faré Rideau, thanks to Zach Beane)
1571 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1572 an optimization note instead. (reported by Martin Cracauer)
1573 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1574 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1575 new process group if it doesn't need to share stdin with the sbcl
1576 process. (thanks to Leslie Polzer)
1577 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1578 (reported by Stanislaw Halik)
1580 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1581 * improvement: stack allocation is should now be possible in all nested
1582 inlining cases: failure to stack allocate when equivalent code is manually
1583 open coded is now considered a bug.
1584 * improvements related to Unicode:
1585 ** the Unicode character database has been upgraded to the
1586 Unicode 5.1 standard, giving names and properties to a number of new
1587 characters, and providing a few extra characters with case
1589 ** the system now recognizes and produces names for Unicode Hangul
1590 syllable characters.
1591 ** the EBCDIC-US external-format is now supported for octet operations
1592 (as well as for stream operations).
1593 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1594 be used to output toplevel compile-time effects into a separate .CFASL
1596 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1597 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1599 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1601 * optimization: division of floating point numbers by constants uses
1602 multiplication by reciprocal when an exact reciprocal exists.
1603 * optimization: multiplication of single- and double-floats floats by
1604 constant two has been optimized.
1605 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1606 sufficient type information is available. (thanks to Leslie Polzer)
1607 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1608 known structure objects are as efficient as defstruct generated accessors.
1609 * optimization: unused vector creation can now be optimized away.
1610 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1611 * improvement: a STYLE-WARNING is signalled when a generic function
1612 clobbers an earlier FTYPE proclamation.
1613 * improvement: the compiler is able to track the effective type of
1614 generic function across method addition and removal even in the
1615 absence of an explicit DEFGENERIC.
1616 * improvement: DESCRIBE now reports on symbols naming undefined
1617 but assumed or declared function as well.
1618 * improvement: recompilation of systems using SB-GROVEL now works
1619 (thanks to Leslie Polzer)
1620 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1621 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1623 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1624 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1625 well as user defined declaration names.
1626 ** VARIABLE-INFORMATION is now aware of alien variables.
1627 * improvement: improved address space layout on OpenBSD (thanks to Josh
1629 * improvement: pretty-printing of various Lisp forms has been improved
1630 (thanks to Tobias Rittweiler)
1631 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1632 unused were deleted in safe code. (reported by John Fremlin)
1633 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1635 * bug fix: some out-of-line array predicates were missing (reported by
1637 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1639 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1640 (thanks to Larry D'Anna)
1641 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1642 as well. (reported by Josh Elsasser)
1643 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1644 leading to possible attempts to delete the same file twice. See docstring
1645 on DELETE-FILE for details. (reported by John Fremlin)
1646 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1647 designator argument, rather than its truename. (reported by Luis
1649 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1650 information about some array types. (thanks to Luis Oliveira)
1651 * bug fix: moderately complex combinations of inline expansions could
1652 be miscompiled if the result was declared to be dynamic extent.
1653 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1654 form (+ <variable> <integer>) were miscompiled under certain
1656 * bug fix: in some cases no compiler note about failure to stack allocate
1657 was emitted, even if the objects were in fact heap allocated.
1658 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1659 allocation could cause objects users might reasonably expect to
1660 be heap allocated to be stack allocated.
1661 * bug fix: DESCRIBE signalled an error for generic functions under
1662 certain circumstances. (thanks to Leslie Polzer)
1663 * bug fix: Fixed spelling of an error message.
1665 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1666 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1667 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1668 of SB-THREAD:THREAD-ERROR-THREAD.
1669 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1670 * new feature: docstrings for local and anonymous functions are no longer
1671 discarded. (thanks to Leslie Polzer)
1672 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1673 values in other threads.
1674 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1675 about object allocation.
1676 * optimization: division of a real float by a complex float is implemented
1677 with a specialised code sequence.
1678 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1679 keywords is an order of magnitude faster.
1680 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1681 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1682 methods, and similarly for non-standard metaclass classes as long as there
1683 are no methods additional on MAKE-INSTANCE.
1684 * optimization: more efficient type-checks for FIXNUMs when the value
1685 is known to be a signed word on x86 and x86-64.
1686 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1687 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1689 * optimization: compiler is smarter about delegating argument type checks to
1691 * optimization: several character functions are now compiled somewhat more
1692 efficiently. (reported by Lynn Quam)
1693 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1694 * improvement: less unsafe constant folding in floating point arithmetic,
1695 especially for mixed complex/real -float operations.
1696 * optimization: constant double and single floats are stored in native
1697 unboxed format on x86[-64].
1698 * optimization: smarter code for arithmetic operations with constant floats,
1699 complex floats, or integers on x86[-64].
1700 * optimization: smarter code for conjugate/multiplication of float complexes
1701 and abs/negate of floats on x86-64.
1702 * optimization: more efficient complex float and real float operations on
1704 * improvement: complex float division is slightly more stable.
1705 * improvement: DESCRIBE output has been reworked to be easier to read and
1706 contains more pertinent information.
1707 * improvement: failure to provide requested stack allocation compiler notes
1708 provided in all cases (requested stack allocation not happening without a
1709 note being issued is now considered a bug.)
1710 * bug fix: SB-POSIX exports the documented types and functions
1711 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1712 types. (reported by "abhi")
1713 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1714 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1715 (thanks to Paul Khuong)
1716 * bug fix: looping around HANDLER-CASE could silently consume stack space
1717 on each iteration. (reported by "foobar")
1718 * bug fix: better error signalling when calls to functions seeking elements
1719 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1720 (reported by Tobias Rittweiler)
1721 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1722 directory components now works as it used to. (various prolems reported by
1723 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1724 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1725 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1726 * bug fix: bogus undefined variable warnings from fopcompiled references to
1727 global variables. (thanks to Lars Rune Nøstdal)
1728 * bug fix: foreign function names should now appear in backtraces on
1729 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1730 * bug fix: SETF compiler macro documentation strings are not discarded
1732 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1733 (thanks to Alex Plotnick)
1734 * bug fix: SLEEP accepts large integer arguments, truncating them to
1735 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1736 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1737 * bug fix: compiler notes for expensive slot type checks could be emitted
1738 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1740 changes in sbcl-1.0.29 relative to 1.0.28:
1741 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1742 https://bugs.launchpad.net/sbcl
1743 Bugs can be reported directly there, or by sending email to
1744 sbcl-bugs@lists.sourceforge.net
1745 (no subscription required.)
1746 * minor incompatible change: under weak type checking policy integer
1747 types are weakened less aggressively.
1748 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1749 allowed to return, which causes SBCL to quit with exit status 0. Previously
1750 if the function returned with a small integer return value, that value
1751 was accidentally reused as the exit status.
1752 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1753 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1754 :HASH-FUNCTION argument. Refer to user manual for details.
1755 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1757 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1758 microseconds since the Unix epoch on all platforms.
1759 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1760 allows the compiler to safely elide boundedness checks for special
1762 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1763 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1764 efficiency measure for threaded platforms, but also valueable in
1766 * new feature: UNC pathnames are now understood by the system on Windows.
1767 * optimization: the compiler uses a specialized version of FILL when the
1768 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1770 * optimization: accesses to potentially non-simple arrays where element type
1771 is known are 50% faster.
1772 * optimization: compiler now generates faster array typechecking code.
1773 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1775 * optimization: multidimensional array accesses in the absence of type
1776 information regarding array rank are approximately 10% faster due to
1777 open coding of ARRAY-RANK.
1778 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1779 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1781 * optimization: result of call to VECTOR can now be stack allocated.
1782 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1783 as long as the resulting array is one-dimensional and has a known
1784 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1785 length of the list matches the known length of the vector does not
1786 allocate the list as an intermediate step. Ditto for VECTOR and simple
1788 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1789 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1790 known element type, and is known to be simple and one dimensional.
1791 * improvement: SBCL now emits a compiler note where stack allocation was
1792 requested but could not be provided (not in all cases, unfortunately)
1793 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1794 * improvement: pretty-printing loop has been implemented properly. (thanks
1795 to Tobias Rittweiler)
1796 * documentation: CLOS slot typechecing policy has been documented.
1797 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1798 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1799 pointer, leading to memory faults. (thanks to Bart Botta)
1800 * bug fix: better floating point exception handling on x86/OpenBSD.
1801 (thanks to Josh Elsasser)
1802 * bug fix: exit status from QUIT when called under --script was lost
1803 (reported by Hubert Kauker)
1804 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1805 same implementation of FILL to initialize the array, even if a more
1806 efficient one was available (reported by Stas Boukarev, thanks to
1808 * bug fix: potential miscompilation of array stack allocation on x86 and
1809 x86-64. (reported by Time Tossavainen)
1810 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1811 result in their subforms being treated as top level forms. (reported by
1813 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1814 than a machine register could leave garbage in the high bits of the
1815 result register (bug 316325).
1816 * bug fix: disable address space randomization Linux/x86-64 as well,
1817 not just x86-64. (reported by Ken Olum)
1818 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1819 generate incorrect code.
1820 * bug fix: #201; type inference for CONS and ARRAY types could derive
1821 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1822 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1823 could not be assigned to or bound with PROGV. (reported by Lorenz
1825 * bug fix: the value of CL:- in the inspector was the previous expression
1826 evaluated rather than the expression being evaluated.
1827 * bug fix: constants can no longer be locally declared special.
1828 * bug fix: signals delivered to threads started from foreign land (read:
1829 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1830 thread by blocking all signals and resignalling.
1831 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1832 from :INITFORM, if any.
1834 changes in sbcl-1.0.28 relative to 1.0.27:
1835 * a number of bugs in cross-compilation have been fixed, with the ultimate
1836 result that building under (at least) clisp should be much more reliable.
1837 * minor incompatible changes: echo-streams now propagate unread-char to the
1838 underlying input stream, and no longer permit unreading more than one
1840 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1841 frames, allowing for instance more reliable backtraces.
1842 * improvement: the debugger REPL can now reference lexical variables
1843 by name directly for code compiled with (DEBUG 3).
1844 * improvement: errors from malformed declarations now have better source
1845 paths associated with them. (thanks to Tobias Rittweiler)
1846 * optimization: faster local calls on x86/x86-64
1847 * bug fix: some error messages for out-of-bound array indexes confused the
1848 index and the bound. (thanks to Stas Boukarev)
1849 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1851 * bug fix: running regressions tests in shells without OSTYPE set now works.
1852 (reported by Harald Hanche-Olsen)
1853 * bug fix: more robust static space exhaustion signalling from
1854 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1855 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1856 docstring away instead of storing it under names such as (LAMBDA (X)).
1857 (reported by Leslie Polzer)
1858 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1859 (thanks to Ole Arndt for the patch)
1860 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1861 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1862 potentially-invalid effective methods in its cache.
1863 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1864 instances as well (thanks to Paul Khuong)
1865 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1866 SB-POSIX:WAITPID and their C equivalents.
1867 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1869 changes in sbcl-1.0.27 relative to 1.0.26:
1870 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1871 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1872 * improvement: the system either recovers from stack exhaustion or dies
1873 properly as opposed to leaving the user uncertain of whether the handler
1874 trampled on some random memory next to the stack or having to rely on
1875 --lose-on-corruption (which is still a good idea to use in production
1876 because stack exhaustion can happen in signal handlers which will likely
1878 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1879 1.0.25.37, reported by Harald Hanche-Olsen)
1880 * bug fix: work around signal delivery bug in darwin (regression from
1881 1.0.25.44, reported by Sidney Markowitz)
1882 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1884 changes in sbcl-1.0.26 relative to 1.0.25:
1885 * incompatible change: an interruption (be it a function passed to
1886 INTERRUPT-THREAD or a timer function) runs in an environment where
1887 interrupts can be enabled. The interruption can use
1888 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1889 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1890 potentially running out of stack. Keep in mind that in the absence
1891 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1892 acquiring a lock can enable interrupts.
1893 * incompatible change: GC-OFF and GC-ON are removed, as they were
1894 always unsafe. Use WITHOUT-GCING instead.
1895 * new feature: runtime option --disable-ldb
1896 * new feature: runtime option --lose-on-corruption to die at the
1897 slightest hint of possibly non-recoverable errors: running out of
1898 memory, stack, alien stack, binding stack, encountering a memory
1899 fault, etc. In the absence of --lose-on-corruption a warning is
1901 * enhancement: detect binding stack exhaustion
1902 * enhancement: detect alien stack exhaustion on x86/x86-64
1903 * improvement: generally more stable and reliable interrupt handling
1904 * improvement: there is a per thread interruption queue,
1905 interruptions are executed in order of arrival
1906 * improvement: a repeating timer reschedules itself when the it has
1907 finished, but expiration times are spaced equally. If an
1908 expiration time is in the past it will trigger after a short grace
1909 period that may give a chance to other things to run.
1910 * optimization: slightly faster gc on multithreaded builds
1911 * optimization: faster WITHOUT-GCING
1912 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1913 important locks so that the debugger/handler doesn't produce
1914 recursive errors or deadlock.
1915 * bug fix: real-time signals are not used anymore, so no more
1916 hanging when the system wide real-time signal queue gets full.
1917 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1919 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1920 * bug fix: fix random memory faults related to interrupts on alpha
1921 * bug fix: fix random memory faults related to interrupts on sparc
1922 * bug fix: fix deadlocks related to starting threads
1923 * bug fix: fix deadlines on locks on futex platforms
1924 * bug fix: restore errno in signal handlers
1925 * bug fix: fix deadlocks related to hash tables
1926 * bug fix: fix deadlocks in pcl
1928 changes in sbcl-1.0.25 relative to 1.0.24:
1929 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1930 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1931 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1932 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1933 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1934 better name and does not return values so stale on multiprocessor systems.
1935 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1937 * improvement: unithread builds keep track of MUTEX-VALUE.
1938 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1939 stream anymore making it thread safe to have a concurrent reader and
1940 a writer, for instance, in a pipe.
1941 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1942 arguments, making compiler-macros for SETF-functions able to inspect
1943 their constant arguments.
1944 * improvement: COMPILE-FILE reports times with millisecond accuracy
1945 (thanks to Luis Oliveira)
1946 * optimization: CHAR-CODE type derivation has been improved, making
1947 TYPEP elimination on subtypes of CHARACTER work better. (reported
1948 by Tobias Rittweiler, patch by Paul Khuong)
1949 * bug fix: setting alien structure fields of type struct by value now
1950 computes the right offset for the memory copy.
1951 * bug fix: compilation problem involving inlined calls to aliens with
1952 result type VOID. (reported by Ken Olum)
1953 * bug fix: #235a; sequential inline expasion in different policies no
1954 longer reuses the functional from the previous expansion site.
1955 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1956 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1957 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1958 cause an implied type redefinition. Regression from 1.0.21.29.
1959 * bug fix: sign-extension of small signed return values now works with C
1960 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1961 * improvements to the Windows port:
1962 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1963 Westfold, thanks to Rudi Schlatte)
1965 changes in sbcl-1.0.24 relative to 1.0.23:
1966 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1967 vector of a multidimensional SIMPLE-ARRAY.
1968 * new feature: the system now signals a continuable error if standard
1969 readtable modification is attempted. (thanks to Tobias Rittweiler)
1970 * new feature: DIRECTORY has been extended with a non-standard keyword
1971 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1972 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1973 has been robustified and documented better. (thanks to Robert Goldman)
1974 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1975 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1976 * tradeoff: constant FORMAT control strings are now compiled unless
1977 SPACE > SPEED (previously only when SPEED > SPACE.)
1978 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1980 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1982 * bug fix: lexical type declarations are now correctly reported by
1983 SB-CLTL2. (reported by Larry D'Anna)
1984 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1985 using UTF-8 as external format. (thanks to Luis Oliveira)
1986 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1987 are signalled correctly. (thanks to Stas Boukarev)
1988 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1989 designator. (thanks to Tobias Rittweiler)
1990 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1991 designator, and returns T instead of the function. (thanks to
1993 * bug fix: direct superclasses of STANDARD-CLASS and
1994 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1995 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1996 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1997 when no class with the named slot yet exists no longer causes a
1998 compile-time style-warning.
1999 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2000 in safe code. (reported by Didier Verna)
2001 * bug fix: #430; nested structure constructors can stack allocate.
2002 * bug fix: on some 64-bit platforms dynamic space size was truncated
2003 to #xffff0000 bytes. (reported by Benjamin Lambert)
2004 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2005 REPL unusable. (reported by Daniel Herring)
2006 * bug fix: return values of READ-SEQUENCE did not take :START into
2007 account on file streams, regressions since 1.0.12.22. (reported by
2008 Thomas Russ, patch by Paul Khuong)
2009 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2010 method specializer used to confuse permuation vector optimization.
2011 * bug fix: system inserted bogus implicit type declarations for local
2012 special variables in DEFMETHOD bodies.
2013 * bug fix: #354; duplicated frames in backtraces due to
2014 non-tail-call-optimized XEPs to functions with return type NIL
2016 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2017 initializes structure object slots according to DEFSTRUCT initforms,
2018 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2019 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2020 (reported by Bruno Haible and Stephen Wilson)
2021 * bug fix: #395; fill-pointer output streams used now support
2022 element-type BASE-CHAR as well.
2023 * bug fix: compiler error when attempting to derive return value of
2024 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2026 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2028 * bug fix: Mac OS X binaries should now be portable between Leopard
2031 changes in sbcl-1.0.23 relative to 1.0.22:
2032 * enhancement: when disassembling method functions, disassembly
2033 for the associated fast function is also produced.
2034 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2036 * optimization: printing with *PRINT-PRETTY* true is now more
2037 efficient as long as the object being printed doesn't require
2038 special handling by the pretty printer.
2039 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2040 now interact correctly with type declarations.
2041 * partial bug fix: PCL detects infinite recursion during wrapper
2042 validation. (thanks to Attila Lendvai)
2043 * bug fix: #426; nested function calls are inlined properly.
2044 Previously if FOO was an inline function, in calls of the form
2045 (FOO (FOO ...)) the outer call was not inlined.
2046 * bug fix: long long arguments passed in registers to alien
2047 functions on PowerPC Linux and NetBSD are now handled correctly
2048 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2050 changes in sbcl-1.0.22 relative to 1.0.21:
2051 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2052 for the shared object in the current directory, but passes the native
2053 namestring of the designated pathname to the operation system's shared
2054 object loading function as-it.
2055 * minor incompatible change: --disable-debugger toplevel option now takes
2056 effect before processing of initialization files and --eval or --load
2058 * new feature: new commandline argument: --script, which supports
2059 shebang lines. See documentation for details. (based on work by
2061 * new feature: SAVE-LISP-AND-DIE can save current values of
2062 --dynamic-space-size and --control-stack-size in the executable core,
2063 causing it to skip normal runtime option processing. See documentation
2064 for details. (thanks to Zach Beane)
2065 * enhancement: inoccous calls to EVAL or generic functions dispatching
2066 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2067 * enhancement: the system no longer resignals errors from --load and
2068 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2069 associated with the original error to be lost. (thanks to Ariel
2071 * enhancement: :DONT-SAVE keyword argument has been added to
2072 LOAD-SHARED-OBJECT for controlling interaction with
2073 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2074 the effects of an earlier LOAD-SHARED-OBJECT call.
2075 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2076 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2077 provided. (reported by Cedric St-Jean)
2078 * bug fix: circularity handling in the reader did not treat raw
2079 structure slots correctly. (reported by Cedric St-Jean)
2080 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2081 file descriptors when there were none.
2082 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2083 was broken. (reporteed by Willem Broekema)
2084 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2085 pathnames without a directory.
2086 * bug fix: COMPILE-FILE did not warn about undefined variable
2087 references at toplevel, and LOAD of the resulting fasl did
2088 not signal an error.
2089 * bug fix: functions with non-required arguments used to end up with
2090 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2091 * bug fix: redefining a function with non-required arguments didn't
2092 update the system's knowledge about its call signature properly.
2093 * bug fix: fixed #431; incompatible alien record type redefinitions
2094 are detected and handled. (reported by Neil Haven)
2095 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2096 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2098 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2099 after alien stack frames.
2100 * bug fix: strings passed to mk{s,d}temp lacked null termination
2102 changes in sbcl-1.0.21 relative to 1.0.20:
2103 * new feature: the compiler is able to track the effective type of a
2104 generic function across method addition and removal.
2105 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2106 appropriately typed structure slots without locking.
2107 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2108 information like those gathered by TIME using a programming-friendly
2110 * new feature: TIME reports time taken even if the form performs a
2111 non-local transfer of control.
2112 * enhancement: reduced conservativism on GENCGC platforms: on
2113 average 45% less pages pinned (measured from SBCL self build).
2114 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2115 mutate constant symbols or violate declaimed type of the symbol.
2116 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2117 sleeping on the semaphore in heavily contested semaphores.
2118 * bug fix: semaphores and condition variables were not interrupt
2120 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2121 owned by other threads anymore.
2122 * bug fix: FIND on lists called KEY outside the specified
2123 subsequence. (reported by budden)
2124 * bug fix: LOG doesn't use single-float intermediate results when
2125 given mixed integer and double-float arguments, leading to better
2126 precision. (reported by Bob Felts)
2127 * bug fix: LOG with base zero returned values of inconsistent type.
2129 changes in sbcl-1.0.20 relative to 1.0.19:
2130 * minor incompatible change: OPTIMIZE qualities
2131 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2132 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2133 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2134 * documentation: some slot access efficiency guidelines have been
2135 added to the user manual.
2136 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2137 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2138 as ASSOC and MEMEBER.
2139 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2140 to more efficient EQ-comparison versions more often.
2141 * optimization: enhanced derivation of DOLIST iteration variable type
2143 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2145 * optimization: runtime lookup of function definitions can be
2146 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2147 * optimization: compiler is able to derive the return type of
2148 (AREF (THE STRING X) Y) as being CHARACTER.
2149 * optimization: CLRHASH on empty hash-tables no longer does pointless
2150 work. (thanks to Alec Berryman)
2151 * optimization: REPLACE deftransforms don't punt when :START1 or
2153 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2154 no longer emits a code deletion note. (reported by Andrew
2156 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2157 functions with an odd number of &OPTIONAL arguments, a &REST
2158 argument, and one or more &KEY arguments at the call site.
2159 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2160 arguments appeared at call sites as well.
2161 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2162 READ-LINE &co can no longer read from them afterwards. (reported
2164 * bug fix: fixed #427: unused local aliens no longer cause compiler
2165 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2167 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2168 alien-stack leakage. (reported by Andy Hefner)
2169 * bug fix: PROGV signals an error when an attempt to violate declared
2170 type of a variable or bind a constant is made.
2171 * bug fix: SET signals an error when an attempt to violate declared
2172 type of a variable is made.
2173 * bug fix: restart computation during the execution of a restart
2174 test function no longer causes infinite recursion. (reported by
2176 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2177 signals an error. (thanks to Pierre Mai)
2178 * bug fix: EXPORT left symbol unexported in conflict situations.
2179 (thanks to Michael Weber)
2180 * bug fix: correctly handle name conflicts involving CL:NIL.
2181 (thanks to Michael Weber)
2182 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2183 conflicts arising from USEing package with conflicting symbols
2184 correctly. (thanks to Michael Weber)
2186 changes in sbcl-1.0.19 relative to 1.0.18:
2187 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2188 warnings that go otherwise unhandled will be muffled if they are
2189 of the type that's the value of this variable.
2190 * optimization: stack allocation is slightly more efficient on x86
2192 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2193 where a raw slot always is initialized using the initform whose
2194 type is not know sufficiently well a compile-time are now compiled
2195 correctly. (reported by John Morrison)
2196 * bug fix: compiler no longer makes erronous assumptions in the
2197 presence of non-foldable SATISFIES types.
2198 * bug fix: stack analysis missed cleanups of dynamic-extent
2199 arguments in non-let-converted calls to local functions.
2200 * improvements to the Windows port:
2201 ** adjusted address spaces for building on both Win32 and
2202 Win64. (thanks for John Connors)
2203 * fixed some bugs revealed by Paul Dietz' test suite:
2204 ** interval arithmetic during type derivation used inexact integer
2205 to single-float coercions.
2206 ** arithmetic operations involving large integers and single
2207 floats give the same results in compiled and interpreted code.
2208 ** deriving the result type of COERCE no longer signals an error
2209 if the derived type of the second argument is a MEMBER type
2210 containing invalid type specifiers.
2211 ** ADJOIN with constant NIL as second argument works correctly.
2212 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2214 changes in sbcl-1.0.18 relative to 1.0.17:
2215 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2216 profiles only the current thread.
2217 * minor incompatible change: changes to SYMBOL-VALUE of constants
2218 defined with DEFCONSTANT now signal an error.
2219 * enhancement: SB-SPROF now has support for wallclock profiling,
2220 and is also able to profile specific threads. REPORT output
2221 has also additional sorting options.
2222 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2224 * optimization: structure allocation has been improved
2225 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2226 ** out of line constructors are ~10% faster.
2227 ** inline constructors are ~15% faster.
2228 ** inline constructors are capable of dynamic extent allocation
2229 (generally on x86 and x86-64, in some cases on other platforms
2231 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2233 * optimization: file compiler is now able to coalesce non-circular
2234 lists, non-base strings, and bit-vectors. Additionally, constants
2235 are never referenced through SYMBOL-VALUE at runtime.
2236 * optimization: code defining methods on PRINT-OBJECT (and other
2237 generic functions in the COMMON-LISP package) now loads faster.
2238 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2240 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2241 fasl is now deleted. (reported by Attila Lendvai)
2242 * bug fix: READ-LINE always returned NIL for the last line in files.
2243 (reported by Yoshinori Tahara)
2244 * bug fix: more accurate disassembly annotations of foreign function
2245 calls. (thanks to Andy Hefner)
2246 * bug fix: trimming non-simple strings and non-string string
2247 designators when the there is nothing to trim works properly.
2248 (thanks to James Knight)
2249 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2250 (thanks to Travis Cross)
2251 * fixed some bugs revealed by Paul Dietz' test suite:
2252 ** NIL is a valid function name (regression at 1.0.13.38)
2253 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2254 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2255 fill pointers properly (regression at 1.0.12.23)
2256 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2257 displacement indices properly (regression at 1.0.12.23)
2259 changes in sbcl-1.0.17 relative to 1.0.16:
2260 * temporary regression: user code can no longer allocate closure
2261 variable storage on stack, due to bug 419 without explicitly
2262 requesting it. Please consult sbcl-devel for advice if you need to
2263 use this feature in the meanwhile.
2264 * new feature: runtime argument --control-stack-size can be used to
2265 adjust thread default control stack size.
2266 * enhancement: improved TIME output
2267 ** all times are reported using the measured accuracy (milliseconds
2268 for real and GC times, microseconds for everything else.)
2269 ** processor cycle counts on x86 and x86-64.
2270 ** interpreted forms are counted for both evaluator modes.
2271 ** number of lambdas converted by the compiler is reported.
2272 ** CPU percentage report (computed from real and total run time.)
2273 ** more comprehensive run time reporting, using a condenced format
2274 ** interperted form, lambda, and page fault counts are omitted
2276 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2278 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2279 * optimization: two argument forms of LAST are upto ~10% faster
2280 in normal SPEED policies.
2281 * optimization: NCONC no longer needs to heap cons its &REST list
2282 in normal SPEED policies.
2283 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2284 to Sidney Markowitz)
2285 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2286 regression since 1.0.9.1. (thanks to Eric Marsden)
2287 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2288 since 1.0.15.36. (thanks to Paul Khuong)
2289 * bug fix: LAST when always returned the whole list when given a bignum
2290 as the second argument.
2291 * bug fix: dynamic extent allocation of nested lists and vectors
2292 could leak to otherwise accessible parts.
2293 * bug fix: invalid optimization of heap-allocated alien variable
2295 * bug fix: fasl header checking is less vulnerable to different
2296 platform word lengths.
2297 * bug fix: more correct assembler syntax for GNU binutils
2298 2.18.50.0.4 support. (thanks to Marijn Schouten)
2299 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2301 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2302 declarations) successfully. (reported by Attila Lendvai)
2304 changes in sbcl-1.0.16 relative to 1.0.15:
2305 * minor incompatible change: revert the changes to sb-posix's error
2306 signaling added in 1.0.14.
2307 * minor incompatible change: change PROBE-FILE back to returning
2308 NIL whenever we can't get a truename, as was the case before 1.0.14.
2309 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2310 inherits from ERROR instead of just CONDITION.
2311 * new feature: SB-INTROSPECT can provide source locations for instances
2312 as well. (thanks to Tobias Rittweiler)
2313 * optimization: binding special variables now generates smaller code
2314 on threaded platforms.
2315 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2316 and cases where no :TEST is given but the compiler can infer that
2317 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2318 * optimization: better LOGNOT on fixnums.
2319 * optimization: modular arithmetic for a particular requested width
2320 is implemented using a tagged representation unless a better
2321 representation is available.
2322 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2323 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2324 for wellformedness and returns a specialized vector. (reported by
2325 Francois-Rene Rideau)
2326 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2327 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2328 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2329 unscheduling timer at the same time as another timer fires.
2330 * bug fix: don't reschedule timers for dead threads.
2331 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2332 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2333 bogus errors if select() was interrupted.
2334 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2336 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2337 * enhancement: cleaner backtraces for interactive interrupts, as
2338 well as other cases where the interesting frames used to be
2339 obscured by interrupt handling frames.
2340 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2341 now supported, and tracing a whole package using (TRACE "FOO") now
2342 traces SETF-functions as well.
2343 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2344 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2345 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2346 * unreadably printed representation of hash-tables now includes
2348 * bug fix: partially fixed #188: type propagation from assignments
2349 is now more efficient.
2350 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2351 'DOUBLE-FLOAT) are not flushable.
2352 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2353 full address of the object, and none of the tag bits.
2354 * bug fix: readably printing hash-tables now respects other printer
2355 control variables. (reported by Cedric St-Jean)
2356 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2357 keyword with MAKE-HASH-TABLE.
2358 * bug fix: export SB-POSIX:MKSTEMP.
2359 * bug fix: SORT was not interrupt safe.
2360 * bug fix: XREF accounts for the last node of each basic-block as
2362 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2363 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2364 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2365 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2366 create obsolete instances in the case of redefinition or
2367 obsoletion of a superclass. (thanks to Andy Hefner)
2368 * bug fix: Support for the Alpha architecture has been revived; it had
2369 suffered somewhat from lack of maintenance since sbcl-1.0.
2370 * improvements to the Windows port:
2371 ** The system detects the codepage to use at startup, instead of
2372 using the value from the saved core. (thanks to Kei Suzuki)
2374 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2375 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2376 (see documentation for details.)
2377 * revived support for OpenBSD (contributed by Josh Elsasser)
2378 * partially fixed bug #108: ROOM no longer suffers from occasional
2379 (AVER (SAP= CURRENT END)) failures.
2380 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2381 bodies no longer cause a WARNING to be signalled. (reported by
2383 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2384 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2385 the bug in TRUNCATE.) (reported by Michael Weber)
2386 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2387 no samples. (reported by Andy Hefner)
2388 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2389 no longer appear as (NIL ...) frames in backtraces.
2390 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2391 is now actually exported from SB-EXT as documented. (reported by
2393 * bug fix: sb-aclrepl now correctly understands how to inspect
2394 single-floats on 64-bit platforms where single-floats are not boxed.
2395 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2396 yet been finalized. (reported by Levente Meszaros)
2397 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2398 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2399 SBCL-specific optimize qualities.
2401 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2402 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2403 an executable in the search path, and does so in the child
2404 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2405 been removed; it can be found in the CVS history, for somebody who
2406 needs that search behavior (see the manual).
2407 * minor incompatible change: compiler policy re. weakening type
2408 checks has changed: now type checks are weakened only if SAFETY < 2
2410 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2411 unparsing of directory pathnames as files. Analogously,
2412 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2413 filename to parse into a directory pathname.
2414 * enhancement: implicit generic function creation now signals a
2415 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2416 users can bind handlers for and muffle around calls to LOAD.
2417 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2418 to be used (using the default stream external format), and allows
2419 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2420 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2421 strings and vectors whose element-type or simplicity is not fully
2422 known at compile-time.
2423 * optimization: STRING-TRIM and related functions no longer allocate
2424 a new string when no trimming needs to be performed. These functions
2425 are also faster than before when the input string has been declared
2427 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2428 * optimization: READ-LINE is significantly faster for files containing
2430 * optimization: non-open coded uses of character comparison operators
2431 (e.g. char=) no longer cons when called with more than one parameter
2432 on platforms supporting dynamic-extent allocation.
2433 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2434 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2435 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2437 * bug fix: some sequence functions elided bounds checking when
2439 * bug fix: too liberal weakening of union-type checks when SPEED >
2441 * bug fix: more bogus fixnum declarations in ROOM implementation
2444 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2445 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2446 :SYNCHRONIZED argument, which makes the hash-table safe for
2447 concurrent accesses (but not iteration.) See also:
2448 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2449 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2450 * optimization: CONCATENATE on strings is an order of magnitude faster
2451 in code compiled with (> SPEED SPACE).
2452 * optimization: SUBSEQ is ~50% faster on lists.
2453 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2454 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2455 END is smaller then START.
2456 * bug fix: SB-PROFILE will no longer report extra consing for nested
2457 calls to profiled functions.
2458 * bug fix: ROOM implementation had bogus fixnum declarations which
2459 could cause type-errors when calling ROOM on large images.
2460 * bug fix: if file compilation is aborted, the partial fasl is now
2461 deleted, and COMPILE-FILE returns NIL as the primary value.
2462 * bug fix: number of thread safety issues relating to SBCL's internal
2463 hash-table usage have been fixed.
2464 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2465 be returned from its body when the values were being returned
2466 using unknown-values return convection and the W-P-O was wrapped
2467 inside an UNWIND-PROTECT.
2468 * bug fix: sb-posix should now compile again under Windows, enabling
2469 slime to work again.
2471 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2472 * incompatible change: hash-table accessor functions are no longer
2473 automatically protected by locks. Concurrent accesses on the same hash-table
2474 from multiple threads can give inconsistent results or even corrupt the
2475 hash-table completely. Multi-threaded applications should do their own
2476 locking at the correct granularity. In the current implementation it is
2477 still safe to have multiple readers access the same table, but it's not
2478 guaranteed that this property will be maintained in future releases.
2479 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2480 and will signal an error at runtime.
2481 * enhancement: SB-THREAD package now exports a semaphore interface.
2482 * enhancement: CONS can now stack-allocate on x86 and
2483 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2485 * enhancement: nested lists can now be stack allocated on
2486 platforms providing stack allocation support.
2487 * enhancement: dynamic-extent support has been extended to support
2488 cases where there are multiple possible sources for the stack
2490 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2491 if the mutex is uncontested on Linux.
2492 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2493 as specified by the CLHS. (thanks to Tobias Rittweiler)
2494 * bug fix: NaN comparison now works on x86-64.
2495 * bug fix: CLOSE :ABORT T on a stream with pending output now
2497 * bug fix: instances of non-standard metaclasses using standard
2498 instance structure protocol sometimes missed the slot type checks
2500 * bug fix: known functions can be inlined in high-debug code.
2502 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2503 * minor incompatible change: the MSI installer on Windows no longer
2504 associates .lisp and .fasl files with the installed SBCL.
2505 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2506 on Windows. (thanks to Luis Oliviera)
2507 * new feature: SB-CLTL2 contrib module now implements
2508 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2509 * optimization: scavenging weak pointers is now more efficient,
2510 requiring O(1) instead of O(N) per weak pointer to identify
2511 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2512 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2513 method bodies using constant slot-names when the first argument is
2514 a specializer parameter for the method.
2515 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2516 names, when the class of the instance is a direct instance
2517 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2518 as slow as the constant slot-name case.)
2519 * optimization: member type construction is now O(N) instead
2521 * optimization: UNION and NUNION are now O(N+M) for large
2522 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2524 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2525 now more readable in environments like Slime which display it.
2526 (thanks to Tobias C. Rittweiler)
2527 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2528 was able to infer the correct argument type for the object on which
2529 the CAS operation was being performed.
2530 * bug fix: copy propagation interfered with parallel assignment
2531 semantics in local calls. (reported by Paul Khuong)
2532 * bug fix: the signed modular fixnum shift compiled to wrong code on
2533 x86 and x86-64. (spotted by a slight modification to some of
2536 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2537 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2538 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2539 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2541 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2542 and generic function now print the object identity for anonymous
2543 instances. (thanks to Attila Lendvai)
2544 * enhancement: as an extension to MOP, SBCL now supports SETF of
2545 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2546 (thanks to Attila Lendvai)
2547 * enhancement: sb-cover has an alternate annotation mode which puts
2548 the form annotations at the car of the form, instead of annotating
2549 it completely. The benefit of this mode is that it shows better
2550 which forms were instrumented by the compiler.
2551 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2552 by printer control variables. (reported by Dan Corkill)
2553 * bug fix: system leaked memory when delayed output was performed by
2554 the OS in smaller chunks then expected. (thanks to David Smith)
2555 * bug fix: system leaked memory when file streams were not closed
2557 * bug fix: large objects written to slow streams that were modified
2558 after the write could end up with the modified state written to
2559 the underlying file descriptor.
2560 * bug fix: multiple threads operating in parallel on the same stream
2561 could cause buffer-overflows.
2562 * bug fix: source location information is stored correctly
2563 (broken since 1.0.6). This bug would generally show up as the
2564 Slime debugger highlighting the wrong form when the sldb-show-source
2566 * bug fix: Branch forms are again annotated as branches in the sb-cover
2568 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2569 on x86-64. (reported by Gregory Vanuxem)
2570 * bug fix: EQUALP could return wrong results for structures with raw
2571 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2572 word). (reported by Vjacheslav Fyodorov)
2573 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2576 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2577 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2578 atomic compare-and-swap operations on threaded platforms.
2579 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2580 allows assigning a global minimum value to optimization qualities
2581 (overriding proclamations and declarations).
2582 * enhancement: closed over variables can be stack-allocated on x86
2584 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2586 * optimization: slot definition lookup is now O(1). This speeds up
2587 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2588 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2589 * optimization: ASSOC and MEMBER can now be open-coded for all
2590 combinations of keyword arguments when second argument is constant
2591 and SPEED >= SPACE. In other cases a specialized version is
2593 * bug fix: using obsoleted structure instances with TYPEP and
2594 generic functions now signals a sensible error.
2595 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2596 (reported by Kristoffer Kvello)
2597 * bug fix: backtrace construction is now more careful when making
2598 lisp-objects from pointers on the stack, to avoid creating bogus
2599 objects that can be seen by the GC.
2600 * bug fix: defaulting of values in contexts expecting more than 7
2601 variables now works on x86-64. (reported by Christopher Laux)
2602 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2604 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2605 as the property-list of a symbol.
2606 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2607 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2608 situations requested, are once again file-compileable. (reported
2611 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2612 * MOP improvement: support for user-defined subclasses of
2613 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2614 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2615 the expansion of DEFMETHOD, is responsible for generating a form
2616 which creates a list of specializers when evaluated. Additional
2617 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2618 debugging and introspective support.
2619 * minor incompatible change: the (unsupported) spinlock interface
2620 has changed: free spinlock now has the value NIL, and a held spinlock
2621 has the owning thread as its value.
2622 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2623 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2625 * enhancement: name of a socket-stream is now "a socket" instead of
2626 "a constant string".
2627 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2628 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2629 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2630 for generic functions. (Thanks to Tobias C. Rittweiler)
2631 * optimization: bignum printing speed has been improved by 20-40%
2632 (depending on the bignum size.)
2633 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2635 * bug fix: the cache used by the CLOS to store precomputed effective
2636 methods, slot offsets, and constant return values is now thread and
2638 * bug fix: generic function dispatch function updating is now thread
2639 and interrupt safe (in the sense that the known issues have been
2641 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2642 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2643 * bug fix: asdf systems with dependencies to the SB-POSIX or
2644 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2645 * bug fix: interrupt safety of applicable method computation has been
2648 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2649 * new contrib: sb-cover, an experimental code coverage tool, is included
2650 as a contrib module.
2651 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2652 significantly faster.
2653 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2654 produce more efficient code on x86-64 if the compiler can determine
2655 that (+ INDEX <constant>) does not require a bounds check and FOO
2656 has an element type at least 8 bits wide.
2657 * enhancement: a new, experimental synchronous timeout facility is
2658 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2659 * enhancement: when a symbol name conflict error arises, the
2660 conflicting symbols are always printed with a package prefix.
2661 (thanks to Kevin Reid)
2662 * enhancement: stepping is now once again supported on the SPARC and
2663 MIPS platforms. (It is also now more likely to work on CheneyGC
2665 * enhancement: sb-sprof can now also track and report accurate call
2667 * bug fixes: the treatment of non-standard subclasses of
2668 SB-MOP:SPECIALIZER is more correct.
2669 * incompatible change: PURIFY no longer copies the data from the
2670 dynamic space into the static and read-only spaces on platforms
2671 that use the generational garbage collector
2672 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2674 * bug fix: GC race condition occasionally resulting in crashes with
2675 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2677 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2679 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2680 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2681 * bug fix: an asynchronous interrupt could previously leave the
2682 system running with GC inhibited.
2683 * bug fix: a DECLARE form evaluated at top-level now causes an error
2684 rather than silently (or verbosely) returning NIL.
2685 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2686 result in a error being signalled due to source form lookup errors.
2687 (reported by Peter Graves)
2689 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2690 * incompatible change: removed writer methods for host-ent-name,
2691 host-ent-addresses -- changing the values did not update the DNS
2693 * minor incompatible change: changed experimental JOIN-THREAD interface
2694 * documentation: the manual now lists reader and writer methods
2695 in class slot documentation sections. (thanks to Richard M Kreuter)
2696 * documentation: unwinding from asyncronous events has been
2697 documented as unsafe.
2698 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2699 in multithreaded application code.
2700 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2701 platforms. (thanks to James Anderson for the optimization hint)
2702 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2704 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2705 variants no longer cons.
2706 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2707 their NOT- variants no longer cons.
2708 * optimization: EQUAL hash tables no longer use SXHASH for objects
2709 of all data types, but instead use an EQL hash for types for which
2710 EQUAL is the same as EQL.
2711 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2712 are significantly faster.
2713 * optimization: new STRING-OUTPUT-STREAM implementation is much
2714 faster for large outputs and conses 30% less on average.
2715 * enhancement: XREF information is now collected for references made
2716 to global variables using SYMBOL-VALUE and a constant argument.
2717 * enhancement: SIGINT now causes a specific condition
2718 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2719 * bug fix: FILE-POSITION used to signal an error in some cases where
2720 ANSI requires it to return NIL.
2721 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2722 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2723 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2725 * bug fix: bad type declaration in the CLOS implementation has
2726 been fixed. (reported by James Anderson)
2727 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2728 (thanks to Lutz Euler)
2729 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2730 required by the CLHS. (reported by Samium Gromoff)
2731 * bug fix: dead unbound variable references now signal an error.
2732 (reported by Marco Monteiro)
2733 * bug fix: / with an unused value was being deleted in safe code.
2734 (thanks to Marco Monteiro and Kevin Reid)
2735 * bug fix: number of characters that can be written onto a single
2736 line in a file is unlimited.
2737 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2738 been fixed by inhibiting interrupts for when GC is disabled.
2739 * bug fix: some interrupt safety issues with GETHASH, (SETF
2740 GETHASH), CLRHASH and REMHASH have been fixed.
2741 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2742 specifier no longer causes infinite recursion.
2743 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2744 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2745 * bug fix: an &environment argument with the correct variable information
2746 is passed to macros that are expanded during byte compilation.
2747 (reported by Samium Gromoff)
2748 * bug fix: a logic error was causing the hash function for bignums to
2749 have excessive amounts of collisions. (reported by Faré Rideau)
2750 * bug fix: modifying the contents of an array could change the return
2751 value of SXHASH on that array, which is only allowed for strings
2752 and bit vectors. (bug introduced in 0.9.16)
2753 * improvement: the x86-64/darwin port now passes all tests (except
2754 for the debugger tests) but should still be considered
2755 experimental until this is fixed.
2756 * improvement: a style-warning is signaled for CASE (etc) clauses with
2757 duplicate keys. (thanks to Kevin Reid)
2758 * improvement: macos/x86 and macos/x86-64 now use mach exception
2759 handlers for dealing with illegal instructions (for trapping and
2760 error handling) and memory protection violations (for GC).
2762 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2763 * new platform: experimental support for x86-64/darwin (MacOS).
2764 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2765 and getnameinfo sockets functions are used instead of gethostbyaddr
2766 and gethostbyname, on platforms where the newer functions are available.
2767 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2769 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2770 don't print the startup banner, but behave as if --noinform was passed
2771 as a command line argument. (thanks to Kevin Reid)
2772 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2773 * optimization: code using alien values with undeclared types is much faster.
2774 * optimization: the compiler is now able to open code SEARCH in more cases.
2775 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2776 * bug fix: using standardized COMMON-LISP special variables as loop
2777 variables no longer signals bogus package lock violations. (reported
2779 * bug fix: declaring local loop variables to be of a range-limited type
2780 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2781 (reported by Andras Simon)
2782 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2783 bugs remain on x86-64.)
2784 * bug fix: the #= and ## reader macros now interact reasonably with
2785 funcallable instances.
2786 * bug fix: type-checks for function arguments were compiled using the
2787 compiler policy settings of the wrong lexical environment (in 1.0.2
2789 * bug fix: SHADOW accepts characters as string designators, as required
2790 by the spec (thanks to Eric Marsden)
2791 * bug fix: fixed GC safety issues when foreign functions are called with
2792 non-base strings as arguments
2793 * bug fix: more consistent error output for fatal-compiler-warnings, like
2795 * bug fix: functions with proper names were showing up as NIL in
2796 backtraces (reported by Edi Weitz, regression in 1.0.2)
2798 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2799 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2800 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2801 produce more efficient code on the x86 if the compiler can determine
2802 that (+ INDEX <constant>) does not require a bounds check and FOO
2803 has an element type at least 8 bits wide.
2804 * bug fix: references to undefined variables are handled the same way
2805 in toplevel forms as in the normal compiler
2806 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2808 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2809 (thanks to Jon Buller)
2810 * improvement: faster compilation times for complex functions
2811 * improvement: added readlink support to SB-POSIX (thanks to Richard
2814 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2815 * improvement: experimental support for mach exception handling on
2816 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2818 * improvement: support for GBK external format.
2819 (thanks to Chun Tian (binghe))
2820 * improvement: the debugger now displays variables that have been closed
2821 over, in code compiled with (DEBUG 2) or higher
2822 * improvement: support for executable cores on NetBSD (thanks to
2824 * new feature: added a RESTART-FRAME debugger command
2825 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2826 be used to provide an implementation for FILE-POSITION on Gray streams
2827 (thanks to Eric Marsden)
2828 * new feature: add syslog, openlog and closelog support to SB-POSIX
2829 (thanks to Richard Kreuter)
2830 * optimization: the function call overhead in code compiled with
2831 a high DEBUG optimization setting is significantly
2832 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2833 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2834 (thanks to Tony Martinez)
2835 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2836 evaluated once (reported by Kevin Reid)
2837 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2838 works again (thanks to Kilian Sprotte)
2839 * bug fix: an error is signaled for tagbodies with duplicate tags
2840 (thanks to Stephen Wilson)
2841 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2842 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2843 stack frames from alien callbacks.
2844 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2845 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2846 65k pages (thanks to David Woodhouse)
2847 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2849 changes in sbcl-1.0.1 relative to sbcl-1.0:
2850 * new platform: FreeBSD/x86-64, including support for threading.
2851 * new feature: the compiler stores cross-referencing information
2852 about function calls (who-calls), macroexpansion (who-macroexpands)
2853 and special variables (who-binds, who-sets, who-references) for code
2854 compiled with (< SPACE 3). This information is available through the
2855 sb-introspect contrib.
2856 * new feature: users may subclass SEQUENCE, and have instances of
2857 these classes interoperate with standard Common Lisp functions if
2858 a number of methods are defined. (This feature is experimental
2859 and the interface subject to change based on feedback from SBCL
2860 users and the general community)
2861 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2862 x86/x86-64, rather than the previous fixed depth of 8
2863 * improvement: another pthread back-end of mutex "pthread-futex".
2864 * bug fix: non-ascii command-line arguments are processed correctly
2865 (thanks to Yaroslav Kavenchuk)
2866 * bug fix: non-required arguments were not passed correctly when a method
2867 defined using DEFMETHOD was called from a mop-generated method using
2868 CALL-NEXT-METHOD (reported by Pascal Costanza)
2869 * bug fix: recursion is now permitted in accessors through
2870 SLOT-UNBOUND. (reported by Pascal Costanza)
2871 * bug fix: an error was signaled at startup if the HOME environment
2872 variable was defined, but had an empty value (reported by Peter Van Eynde)
2873 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2874 signal a PROGRAM-ERROR, not a BUG.
2875 * bug fix: SB-POSIX:READDIR works when built with large file support.
2876 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2878 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2879 for better automatic indentation support. (thanks to Matt Pillsbury)
2880 * optimization: loading generic functions no longer takes O(n^2) time,
2881 proportional to the amount of methods in the generic function
2882 (reported by Todd Sabin and Jeremy Brown)
2883 * optimization: the FIND and POSITION family of sequence functions
2884 are significantly faster on arrays whose element types have been
2886 * improvements to the Windows port:
2887 ** Intermittent heap corruption problems have been fixed. (thanks
2888 to Alastair Bridgewater)
2889 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2891 ** Lisp is able to unwind foreign exception frames from alien
2892 callbacks. (thanks to Alastair Bridgewater)
2894 changes in sbcl-1.0 relative to sbcl-0.9.18:
2895 * improvement: experimental support for threading on FreeBSD/x86.
2896 (thanks to NIIMI Satoshi)
2897 * improvement: runtime option --dynamic-space-size can be used
2898 to set the size of the dynamic space reserved on startup.
2899 * improvement: floating point modes in effect are now saved in
2900 core, and restored on startup.
2901 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2902 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2903 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2904 threads are not running after *SAVE-HOOKS* have run.
2905 * improvement: writes to CLOS instance slots are type-checked in code
2906 compiled with (SAFETY 3)
2907 * improvement: floating-point exception handling on FreeBSD (thanks to
2909 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2910 (thanks to Zach Beane)
2911 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2913 * improvement: added support for the Shift-JIS external format.
2914 (contributed by NIIMI Satoshi)
2915 * improvement: callbacks are supported on Linux/PPC. (thanks to
2917 * bug fix: compiler bug triggered by a (non-standard) VALUES
2918 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2919 * bug fix: file compiler no longer confuses validated and already
2920 dumped structurres. (reported by Kaersten Poeck)
2921 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2922 fill-pointer signals a type-error as required. (thanks to
2924 * bug fix: disassemly of funcallable instances works.
2925 * bug fix: single stepping on PPC.
2926 * bug fix: fix thread-safety problems in the type system (generally
2927 manifesting as nonsensical errors like "STRING is a bad type specifier
2928 for sequences" or "The value 1 is not of type FIXNUM")
2929 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2930 (reported by Josip Gracin)
2931 * bug fix: an error is signaled for attempts to displace arrays with
2932 incompatible element types (thanks to Mario Mommer)
2933 * bug fix: more correct handling of wide characters in debug info
2934 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2935 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2936 and don't cause extra consing
2937 * optimization: MAP and MAP-INTO are significantly faster on vectors
2938 whose elements types have been declared.
2939 * Improvements to SB-SPROF:
2940 ** Support for allocation profiling
2941 ** Reduced profiling overhead, especially for long profiling runs
2942 * Improvements to the Windows port:
2943 ** floating point exceptions are now reported correctly.
2944 ** stack exhaustion detection works partially.
2945 ** more accurate GET-INTERNAL-REAL-TIME.
2946 ** better RUN-PROGRAM behaviour in case of errors in the child
2948 ** PROBE-FILE now simplifies pathnames correctly.
2949 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2950 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2951 1st 1970 (although time timezone data will be unreliable).
2952 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2954 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2955 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2956 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2958 * bug fix: two potential GC deadlocks affecting threaded builds.
2959 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2960 returns T (reported by Anton Kazennikov)
2961 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2962 with non-variable places
2963 * bug fix: remove a race condition in the setting of
2964 funcallable-instance functions, this should make threaded CLOS
2965 code more stable against memory faults.
2966 * bug fix: corruption of specials when unbinding is interrupted by an
2967 asynchronous unwind (reported by Hannu Koivisto)
2968 * improvement: the debugger will now also display local variables that
2969 are only used once, for code compiled with a DEBUG optimization quality
2972 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2973 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2974 * incompatible change: External-format support for FFI calls. The
2975 SB-ALIEN:C-STRING no longer implies an ASCII
2976 external-format. Instead the string is subject to external-format
2977 conversion. Additionally return values of type SB-ALIEN:C-STRING
2978 are by default of type (SIMPLE-ARRAY CHARACTER), not
2979 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2980 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2981 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2982 * incompatible change: SB-EXT package no longer contains the
2983 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2984 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2986 * incompatible change: the single-stepper is no longer available
2987 on Alpha, Mips and Sparc platforms.
2988 * minor incompatible change: the direct superclasses of
2989 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2990 not (STANDARD-OBJECT FUNCTION). This makes the
2991 class-precedence-lists of GENERIC-FUNCTION and
2992 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2994 * minor incompatible change: the default stream external format on
2995 non-unicode SBCL is no longer detected from the locale, but is always
2997 * new feature: Add a version of evaluator that uses an interpreter instead
2998 of the compiler. EVAL still uses the compiler by default, to switch it
2999 to use the interpreter, set the value of the variable
3000 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3001 * minor incompatible change: the single-stepper REPL has been merged
3002 with the normal debugger (see the "Stepping" heading of the debugger help
3003 for more details). The debugger command STEP will no longer switch
3004 to the single-stepper REPL.
3005 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3006 for a type now works.
3007 * bug fix: loading of default sysinit file works. (thanks to Leonid
3009 * bug fix: better detection of circularities in the file-compiler.
3010 (reported by Marco Monteiro)
3011 * bug fix: the CL pathname functions now work with files that have
3012 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3013 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3014 systems with Unix98 pty semantics.
3015 * bug fix: ASDF-INSTALL will now work with bsd tar.
3016 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3018 * bug fix: timers expiring in dead threads no longer cause a
3019 type-error (reported by Paul "Nonny Mouse").
3020 * bug fix: thanks to more lightweight single-stepper instrumentation,
3021 code compiled with (DEBUG 3) will compile and execute significantly faster,
3022 and will have more accurate type-inferencing than before
3023 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3024 whose bindings are modified
3025 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3026 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3027 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3028 CL:SOFTWARE-VERSION with proper version
3030 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3031 * feature: implemented the READER-METHOD-CLASS and
3032 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3033 as specified by AMOP.
3034 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3036 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3037 (thanks to Lutz Euler)
3038 * optimization: hashing of general arrays and vectors has been
3039 improved. (reported by Any Fingerhut)
3040 * enhancement: SB-INTROSPECT is now able to find definitions of
3041 profiled functions. (thanks to Troels Henriksen)
3042 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3043 as well, allowing compiler-macros for SETF-functions to expand.
3044 * enhancement: step-instrumentation no longer wraps known
3045 single-value functions with multiple-value context, allowing
3046 better type inference.
3047 * fixed bug #337: use of MAKE-METHOD in method combination now works
3048 even in the presence of user-defined method classes. (reported by
3049 Bruno Haible and Pascal Costanza)
3050 * fixed bug #339(c): if there are applicable methods not part of any
3051 long-form method-combination group, call INVALID-METHOD-ERROR.
3052 (reported by Bruno Haible)
3053 * fixed bug #361: the :FUNCTION initarg in the protocol for
3054 initialization of methods can now be used to override
3055 internally-produced optimized functions. (reported by Bruno
3057 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3058 system-provided lambda expression no longer cause warnings about
3059 unbound #:|pv-table| symbols.
3060 * bug fix: improved the handling of type declarations and the
3061 detection of violations for keyword arguments with non-constant
3063 * bug fix: potentially erronous calls to PATHNAME and
3064 MERGE-PATHNAMES were being flushed in some cases.
3065 (reported by Richard Kreuter)
3066 * bug fix: compiled calls to TYPEP were mishandling obsolete
3067 instances. (reported by James Bielman and Attila Lendvai)
3068 * bug fix: format strings with ~> without matching ~< no longer
3069 trigger an AVER, but signal an understandable error instead.
3070 (reported by Antonio Martinez)
3071 * bug fix: specifying an output-file without a pathname-type for
3072 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3073 of input-file instead of "fasl". (reported by Robert Dodier)
3074 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3075 (reported by James Y Knight).
3076 * bug fix: compiler-macros-function did not consider the environment
3077 argument for shadowing by local functions.
3078 * bug fix: compiler-macros expansion was inhibited by local INLINE
3080 * bug fix: inline expansions of known functions were subject to
3081 step-instrumentation in high debug policies, leading to problems
3082 with type-inference.
3083 * bug fix: compiler failed to differentiate between different CONS
3084 types in some cases.
3085 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3086 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3087 * bug fix: #368: incorrect use of expressed vs. upgraded array
3089 * bug fix: #306a: more precise unions of array types.
3090 * thread-safety improvements:
3091 ** CONDITION-WAIT could return early on Linux, if the thread was
3092 interrupted and subsequently continued with SIGCONT.
3093 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3095 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3096 * added support for the ucs-2 external format. (contributed by Ivan
3098 * minor incompatible change: pretty printing of objects of type
3099 (cons symbol) is, in the default pprint-dispatch-table, now
3100 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3102 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3103 called later in a class's lifetime, possibly as late as when the
3104 first instance of the class is created. Previously,
3105 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3106 class became finalizeable.
3107 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3108 for multibyte external-format streams. (thanks to "vbzoli")
3109 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3110 with :ALLOCATION :CLASS inherited from superclasses of the
3112 * fixed bug: anonymous classes can now be created using the :NAME
3113 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3114 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3115 * fixed bug: core-files saved with :EXECUTABLE T can again be
3116 executed when SBCL_HOME isn't set. (reported by James Knight)
3117 * fixed bug: toplevel LOCALLY forms with declarations could
3118 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3119 * fixed bug: printing from several different threads using different
3120 values of *print-case* could cause invalid output, due to
3121 some internal special variables of the printer not being bound
3122 thread-locally (reported by Max Mikhanosha)
3123 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3124 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3125 (reported by Pascal Costanza)
3126 * fixed bug: FINALIZE-INHERITANCE is called from
3127 REINITIALIZE-INSTANCE on classes when the class has previously
3128 been finalized, as required by AMOP.
3129 * minor code generation optimizations:
3130 ** better register allocation in CLOS dispatching functions
3131 ** overflow detection when coercing signed bytes to fixnums on x86-64
3132 ** is now implemented with one IMUL instruction instead of three shifts
3133 ** more efficient bit-vector access on x86 and x86-64
3134 ** more efficient access to raw structure slots on x86 and x86-64
3135 * fixed some bugs revealed by Paul Dietz' test suite:
3136 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3137 return its argument.
3139 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3140 * feature: thread support on Solaris/x86, and experimental thread support
3142 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3144 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3145 default method for SLOT-UNBOUND.
3146 * minor incompatible change: prevent the user from specializing the
3147 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3148 somewhat counter to the intent of the protocol, I (CSR) think, and
3149 additionally it just doesn't work in SBCL as currently
3150 implemented, thanks to optimizations (that are always valid for
3151 the other three SLOT-VALUEish functions, but not for the setter).
3152 * minor incompatible change: the :SB-LDB feature is now enabled by
3153 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3154 the low-level debugger.
3155 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3156 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3157 down to an SB-SYS:FD-STREAM, allowing direct communication in
3158 more cases. Temporary files and pipes are still used as a fallback
3160 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3161 on the non-reentrant C functions localtime(3) and gmtime(3).
3162 * bug fix: global optimization policy was not visible in LOCALLY and
3164 * bug fix: class objects can be used as specializers in methods.
3165 (reported by Pascal Costanza)
3166 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3167 with a type error. (reported by blitz_ on #lisp)
3168 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3169 failed with a type error. (reported by Pascal Bourguignon)
3170 * bug fix: merging pathnames against defaults with :DIRECTORY
3171 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3172 (reported by James Y Knight)
3173 * bug fix: saving large (>2GB) cores on x86-64 now works
3174 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3175 constant index and a (simple-array (signed-byte 32)) array
3176 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3177 error (patch by Robert J. Macomber)
3178 * feature: TIME now displays the amount of run-time spent in GC
3179 * bug fix: The debugger now does a better job of respecting
3180 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3181 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3182 workaround for bug 403.)
3183 * bug fix: floating point exception handling now works on FreeBSD
3184 (thanks to NIIMI Satoshi)
3185 * fixed some bugs revealed by Paul Dietz' test suite:
3186 ** MISC.641: LET-conversion were not supposed to work in late
3188 * improvements to the Win32/x86 port:
3189 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3190 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3192 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3193 * new feature: source path information is generated for macro-expansion
3194 errors for use in IDE's like Slime (thanks to Helmut Eller)
3195 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3196 * bug fix: compiler does not loop forever on an invalid type in
3198 * improvement: compilation of most CLOS applications is significantly
3200 * optimization: added a limited bytecode compiler for simple toplevel
3201 forms, speeding up compilation and FASL loading
3202 * bug fix: the statistical profiler now properly distinguishes anonymous
3205 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3206 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3207 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3208 into subclasses of the finalized class. Now user calls to
3209 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3210 system return before any subclasses are finalized.
3211 * minor incompatible change: The reader no longer ignores errors
3212 regarding non-existent packages in #+ and #- feature tests.
3213 * new feature: command line options --no-sysinit, --no-userinit to
3214 inhibit loading the corresponding init files
3215 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3216 for sending data through UDP sockets (thanks to François-René Rideau)
3217 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3218 error is signalled instead (thanks to François-René Rideau)
3219 * minor incompatible change: Error signalling behaviour of lexical
3220 operations violating package locks has changed slightly. Refer to
3221 documentation on package locks for details.
3222 * enhancement: EVAL can process IF-expressions without resorting to the
3224 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3225 constant-folded properly due to missing out-of-line functions.
3226 (reported by Mika Pihlajamäki)
3227 * bug fix: LISTEN sometimes returned T even in cases where no data was
3228 immediately available from the stream
3229 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3230 were reversed. (reported by Levente Mészáros)
3231 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3232 when given a vector displaced to an adjustable array. (reported
3234 * bug fix: derivation of float boundaries from numbers outside the
3235 appropriate float range (reported by John Wiseman)
3236 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3238 * bug fix: precomputing cache entries for generic functions with
3239 some subclasses of specializers as yet invalid does not attempt to
3240 fill a cache line with a negative offset. (reported by Levente
3242 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3243 allow condition class objects as arguments to DOCUMENTATION and
3244 (SETF DOCUMENTATION); only find and set documentation for
3245 structure names for the STRUCTURE doc-type. (suggested by Gary
3247 * improvements to the Win32/x86 port:
3248 ** (user-homedir-pathname) and default initialization file
3249 locations now know about the user's "Documents and Settings"
3250 directory (thanks to Yaroslav Kavenchuk)
3251 ** run-program is implemented (thanks to Mike Thomas)
3252 ** sockets support (thanks to Timothy Ritchey)
3253 ** better backtrace support (thanks to Alastair Bridgewater)
3254 ** sb-grovel supported
3255 ** asdf-install and sb-posix work somewhat
3256 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3257 * improvements to the Solaris/x86 port:
3258 ** works on Solaris 11/Solaris Express
3259 ** floating-point exception handling support
3260 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3261 * fixed some bugs revealed by Paul Dietz' test suite:
3262 ** REMOVE-METHOD returns its generic function argument even when
3263 the method is not one of the generic functions' methods.
3264 ** objects declared as MEMBER types can be admissible arguments to
3265 structure accessors.
3266 ** printing characters should simply be printed by the FORMAT ~:C
3268 ** compiler failure when compiling functions with hairy constant
3269 defaults for optional parameters.
3270 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3271 function, which is already optimized.
3273 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3274 * new platform: experimental support for SBCL x86/Darwin, including
3275 MacOS X 10.4.5 on Intel.
3276 * new feature: Unicode character names are now known to the system
3277 (through CHAR-NAME and NAME-CHAR).
3278 * new feature: the filesystem location of SBCL's core file is
3279 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3280 * minor incompatible change: the contrib modules SB-POSIX and
3281 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3282 this change is to make it easier to distribute
3283 location-independent binaries.
3284 * bug fix: as implied by AMOP, standardized classes no longer have
3285 slots named by external symbols of public packages. (reported by
3287 * optimization: calling functions via constant symbols -- as in
3288 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3289 via the function object as in (FUNCALL #'FOO).
3290 * optimization: on x86 and x86-64, the calling convention for the
3291 case of dealing with an unknown number of values has been altered
3292 to be friendlier to the prediction heuristics implemented,
3293 particularly with reference to CALL and RET pairing. (thanks to
3294 Alastair Bridgewater)
3295 * optimization: on x86, the code for access to thread-local symbol
3296 values and binding/unbinding of thread-local symbols is smaller.
3297 (thanks to Alastair Bridgewater)
3298 * enhancement: CONSTANTP is now able to determine constantness of
3299 more complex forms, including calls to constant-foldable standardized
3300 functions and some special forms beyond QUOTE.
3301 * fixed bug: occasional GC crashes on Solaris/x86
3302 * optimization: x86-64 supports stack allocation of results of simple
3303 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3304 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3305 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3306 (thanks to James Knight)
3307 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3308 by the standard (thanks to Stephen Compall)
3310 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3311 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3312 be used for bundling the runtime and the core file into one
3313 executable binary. This feature is not currently supported on all SBCL
3314 platforms. (thanks to James Bielman and NIIMI Satoshi)
3315 * new feature: a generational or ephemeral garbage collector is now
3316 the default on the PowerPC platform (both Linux and Darwin). The
3317 old Cheney (stop and copy) collector is a build-time option.
3318 (thanks to Cyrus Harmon, after Raymond Toy)
3319 * minor incompatible change: the method by which SBCL finds its
3320 contributed modules has changed; it no longer relies on symbolic
3321 links from an $SBCL_HOME/systems directory, but searches directly
3322 in the subdirectories of $SBCL_HOME.
3323 * enhancement: the dynamic heap size on the Linux/PPC platform is
3324 markedly larger, even using the older Cheney garbage collector.
3325 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3326 certain complicated string types. (reported by Gary King)
3327 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3328 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3329 * fixed bug: DOCUMENTATION on structures no longer signals an
3330 error if no structure type of the right name exists. (reported by
3332 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3333 applicable non-standard primary or :AROUND method on
3334 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3335 no longer cause unbound variable errors. (reported by Kevin Reid)
3336 * fixed bug: metacircle resolution in cases where methods have slots
3337 added before the slots from STANDARD-METHOD. (reported by Jean
3339 * fixed bug: the Power PC assembly code for calling into lisp
3340 sometimes computed its return address wrongly (depending on the
3341 15th bit of the address, fixed at link time). This used to
3342 manifest itself in a segmentation violation while building PCL.
3343 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3344 many others over the years)
3345 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3346 the stack pointer (treated as a signed integer) is negative.
3347 (thanks to Peter van Eynde)
3349 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3350 * new platform: experimental support for the Windows operating
3351 system has been added. (thanks to Alastair Bridgewater)
3352 * fixed several bugs in and robustified the PPC FFI (including
3353 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3354 * bug fix: allow non-simple string symbol names (reported by Paul
3356 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3358 * bug fix: saving a core corrupted callbacks on x86/x86-64
3359 * bug fix: closed a loophole in metacircularity detection and
3360 grounding in the PCL implementation of CLOS.
3361 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3362 (reported by tomppa on #lisp)
3363 * bug fix: clear the direction flag on Lisp -> C transitions, as
3364 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3365 (reported by Andrej Grozin and Hendrik Maryns)
3366 * optimization: major improvements to GC efficiency on GENCGC platforms
3367 * optimization: faster implementation of EQUAL
3368 * optimization: emit more efficient opcodes for some common
3369 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3370 * optimization: several other minor code-generation improvements on x86-64
3371 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3373 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3374 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3375 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3376 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3377 by ANSI as a generic function, and for consistency (SETF
3378 GENERIC-FUNCTION-NAME) is treated likewise.
3379 * fixed bug #233.b: make constraint propagation notice when a variable
3380 value is changed after it is referenced but before it is used
3381 * fixed bug #296: no more arbitrary behaviour from filenames with
3382 odd characters as --load arguments. (reported by Adam Warner)
3383 * fixed bug #390: :CHARACTER-SET pathname components now work as
3384 expected. (reported by Tim Daly Jr)
3385 * fixed bug #391: complicated :TYPE intersections in slot
3386 definitions no longer cause an error in PCL internals.
3387 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3388 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3389 returning the number of octets which would be written to the
3390 file-stream. (thanks to Robert J. Macomber)
3391 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3392 arguments to the internal stream functions. (thanks to David
3394 * bug fix: stack exhaustion is now handled on the x86/SunOS
3395 platform. (thanks to Daisuke Homma)
3396 * bug fix: more accurate ROOM results on GENCGC platforms
3397 * optimization: improved type inference for arithmetic-for
3398 index variables in LOOP
3399 * optimization: faster floating-point SQRT on x86-64
3400 * fixed some bugs revealed by Paul Dietz' test suite:
3401 ** DOCUMENTATION returns NIL instead of "" for method combinations
3402 that don't have a docstring
3404 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3405 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3406 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3407 therefore are not customizeable by user code (as seems to be at
3408 least permitted and maybe required by AMOP). As a consolation,
3409 however, the SBCL implementation of these functions now calls
3410 REINITIALIZE-INSTANCE as specified by AMOP.
3411 * bug fix: slot-definition documentation is propagated as per ANSI
3412 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3413 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3414 argument, as do eslotd initialization methods. (from Pascal
3415 Costanza's "Closer" project)
3416 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3417 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3419 * bug fix: it is now possible to have more than one subclass of
3420 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3421 (reported by Bruno Haible, Pascal Costanza and others)
3422 * bug fix: the dependent update protocol now works for generic
3423 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3424 and Pascal Costanza)
3425 * bug fix: condition-class instances corresponding to
3426 DEFINE-CONDITION forms are now created eagerly. (reported by
3427 Kalle Olavi Niemitalo on comp.lang.lisp)
3428 * bug fix: floating point printing is more accurate in some
3429 circumstances. (thanks to Simon Alexander)
3430 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3431 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3432 * bug fix: callbacks on OS X now preserve stack-alignment.
3433 (thanks to Cyrus Harmon)
3434 * enhancement: the x86-64 disassembler is much better at
3435 disassembling SSE instructions. (thanks to Lutz Euler)
3436 * enhancement: CHECK-TYPE on a variable now allows type-inference
3437 (thanks to Vincent Arkesteijn)
3438 * optimization: improved performance of EUC-JP external format.
3439 (thanks to NIIMI Satoshi)
3440 * optimization: performance improvements to IO on file streams of
3441 :ELEMENT-TYPE CHARACTER
3442 * optimization: much faster memory allocation on x86-64
3443 * optimization: faster garbage collections (latency and throughput)
3445 * optimization: faster bignum subtraction and division on x86 and x86-64
3446 (thanks to Lutz Euler)
3447 * optimization: more accurate type-inference for loops that use a
3448 floating point index variable or a negative step.
3450 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3451 * bug fix: add a workaround to SBCL looping infinitely at startup on
3452 Linux kernels with apparently buggy implementations of personality().
3453 (thanks to Svein Ove Aas)
3454 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3455 (thanks to David Lichteblau)
3456 * bug fix: local bindings shadow global symbol macros for
3457 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3458 * optimization: non-open coded uses of numeric comparison operators
3459 (e.g. >) no longer cons when called with more than one parameter
3460 on platforms supporting dynamic-extent allocation.
3461 * enhancement: saving cores with foreign code loaded is now supported
3462 on MIPS/Linux in addition to the previously supported platforms.
3463 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3464 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3465 * bug fix: division by zero in sb-sprof when no samples were collected
3466 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3467 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3468 (thanks to Alexander Kjeldaas)
3469 * new feature: ignoring the return values of destructive functions
3470 like NREVERSE signals a compile-time style-warning.
3471 (thanks to Kevin Reid)
3472 * new feature: the alignment of alien structure fields can be
3473 explicitly specified. (thanks to Cyrus Harmon)
3474 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3475 and dump core on SIGQUIT
3477 ** incompatible change: threads do not inherit values of specials
3478 from their parents (see manual)
3479 ** bug fix: threads stacks belonging to dead threads are freed by the
3480 next exiting thread, no need to gc to collect thread stacks anymore
3481 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3482 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3483 ** bug fix: dynamic variable and thread start related gc lossage
3484 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3486 * fixed some bugs revealed by Paul Dietz' test suite:
3487 ** SUBTYPEP is slightly more accurate on heinously complicated
3488 CONS types where some of the members have uncertain (in the
3489 NIL, NIL sense) type relationships to each other.
3491 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3492 no longer purified unless :PURIFY T is explicitly specified.
3493 ** Non-purified cores are significantly smaller than before
3495 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3496 * new feature: timers based on Zach Beane's excellent timer package
3497 * added support for the following external formats: koi8-u,
3498 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3499 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3500 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3501 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3502 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3503 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3504 * incompatible change: a threaded SBCL will no longer revert to
3505 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3506 * bug fix: interrupts are disabled until startup is complete; no
3507 more sigsegvs when receiving a signal to soon
3508 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3510 * bug fix: add a workaround for the memory randomization features in
3511 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3512 workaround will only be in effect on systems with the proc filesystem
3514 * bug fix: printing objects of type HASH-TABLE signals a
3515 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3517 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3518 have been running for over 50 days. (reported by Gilbert Baumann)
3519 * bug fix: the logic for getting names of functions gets less
3520 confused when confronded with alternate-metaclass
3521 funcallable-instances. (reported by Cyrus Harmon)
3522 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3523 consistent, even on internal alternate-metaclass objects.
3524 * bug fix: flush closure information collected by physical
3525 environment analysis prepass before the main pass. (bug reported
3527 * bug fix: compiler pack phase does not modify a hashtable, which is
3528 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3529 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3530 may be expanded. (reported by Alexander <malishev> on c.l.l)
3531 * bug fix: no more style-warnings when compiling code using LAST
3532 under high-SPEED low-SPACE settings. (reported by David Wallin
3534 * fixed some incompatibilities between SBCL's MOP and the MOP
3536 ** the METAOBJECT class is now implemented;
3537 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3538 STANDARD-OBJECT, as required;
3539 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3540 now compatible (as required by VALIDATE-SUPERCLASS); there
3541 remains a consistency requirement over the presence or absence
3542 of the FUNCTION class in the superclass list of finalized
3543 classes; see the manual for more details;
3544 ** the :AROUND method for COMPUTE-SLOTS on
3545 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3546 requested slot ordering.
3548 ** bug fix: parent thread now can be gc'ed even with a live
3550 ** bug fix: binding a special with PROGV to no value is not
3551 the same as that symbol not having been bound (thanks to
3553 ** bug fix: binding specials is thread safe (thanks to
3555 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3556 and SB-SPROF do not die with 'no handler for signal XX in
3557 interrupt_handle_now(..)' anymore
3558 ** bug fix: WITH-TIMEOUT works with multiple running threads
3559 * fixed some bugs revealed by Paul Dietz' test suite:
3560 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3561 the :method-class keyword argument.
3563 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3564 * new port: the Solaris operating system on x86 processors is now
3565 mostly supported, though some rough edges in the environment
3566 remain. (thanks to Daisuke Homma)
3567 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3568 space for its heap. (thanks to Thiemo Seufer)
3569 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3570 closures. (thanks to Thiemo Seufer)
3571 * minor incompatible change: eof selects abort in the debugger.
3572 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3573 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3575 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3576 deprecated, and will go away in a future revision of SBCL.
3577 * minor incompatible change: GC-ON and GC-OFF are no longer
3578 implemented with a counter, it does not matter how many times gc
3579 is switched on or off
3580 * bug fix: discriminating functions for generic function classes
3581 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3582 make invalid assumptions about method precedence order. (reported
3584 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3585 platforms. (thanks to Thiemo Seufer)
3586 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3587 * bug fix: correct pathname printing with printer escaping is on.
3588 (thanks to Kevin Reid)
3589 * bug fix: complex VOP definitions in "user-space" no longer trigger
3590 package locks. (reported by Zach Beane)
3591 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3592 for funcallable-instance functions, and is no different from
3594 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3595 characters in the current readtable. (reported by Nicholas Neuss)
3596 * bug fix: SUBTYPEP on various CONS types returns more a more
3597 accurate acknowledgment of its certainty.
3598 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3599 lists in some cases. This partially fixes bug 384.
3600 * flush all standard streams before prompting in the REPL and the
3602 * bug fix: signal handling and triggering gc do not conflict
3603 directly anymore, in particular a high frequency sb-sprof does
3604 not prevent gc from running
3605 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3606 approximation for timezone and DST information between the
3607 universal time epoch and the smallest negative 32-bit time_t.
3608 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3609 year 1899 so long as the encoded time is non-negative.
3610 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3611 the correct answer for non-constant rotate amounts when performing
3612 an inline 32-bit rotation.
3614 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3615 there is only one thread in the session
3616 ** bug fix: memory leak for streams created in one thread and
3617 written to in another
3618 ** bug fix: lockup when compiled with gcc4
3619 ** bug fix: race that allows the gc to be triggered when gc is
3621 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3622 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3624 ** bug fix: finished threads are gc'ed properly
3625 * fixed some bugs revealed by Paul Dietz' test suite:
3626 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3627 has arguments with a different set of applicable methods from
3628 the orignal arguments.
3629 ** The type error thrown by MAP now has a correct expected-type
3631 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3632 name a compiled function.
3633 ** Three MISC tests where a large bignum was improperly coerced to
3634 a float that couldn't represent that bignum during type
3635 derivation were fixed.
3636 ** SUBTYPEP can now handle types involving the negation of a
3637 list-form FUNCTION type.
3638 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3639 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3640 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3642 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3643 * New feature: Experimental support for bivalent streams: streams
3644 opened with :element-type :default now allow character and binary
3645 (unsigned-byte 8) I/O
3646 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3647 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3649 * bug fix: no more highly sporadic "couldn't check whether ~S is
3650 readable" when reading a stream and an interrupt hits in the middle
3651 of a select system call
3652 * compiler better recognizes complex arrays (reported by Eduardo
3654 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3655 for variables on SBCL built with linkage-tables. (reported by Luis
3657 * various error reporting improvements.
3658 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3659 (Thanks to Thiemo Seufer)
3660 * bug fix: nested reader invokations work correctly
3661 * bug fix: it is possible to have simultaneous references to foreign
3662 code and foreign data with the same name.
3664 ** added x86-64 support
3665 ** incompatible change: the threading api now works with thread
3666 objects instead of thread ids
3667 ** bug fix: threads are protected from signals and interruption when
3668 starting up or going down
3669 ** bug fix: a race where an exiting thread could lose its stack to gc
3670 ** bug fix: don't halt on infinite error in threads if possible
3671 ** fixed numerous gc deadlocks introduced in the pthread merge
3672 ** bug fix: fixed thread safety issues in read and print
3673 ** bug fix: debugger doesn't hang on session lock if interrupted at
3674 an inappropriate moment
3675 ** bug fix: run-program is now thread safe(r)
3676 ** bug fix: inner with-recursive-lock no longer releases the mutex
3677 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3678 * fixed some bugs revealed by Paul Dietz' test suite:
3679 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3680 EXPECTED-TYPE slots filled.
3681 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3683 ** MAKE-CONDITION accepts classes as type-designators.
3684 ** COMPILE may never return NIL.
3685 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3686 range before calling Unix time functions
3688 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3689 * numerous signal handling fixes to increase stability
3690 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3691 * minor incompatible change: we now correctly canonize default
3692 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3693 as per the MOP, rather than the historical (INITARG INITFUNCTION
3694 INITFORM). (reported by Bruno Haible)
3695 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3696 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3697 for more information.
3698 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3699 pathname is a directory pathname.
3700 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3701 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3703 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3704 :METACLASS argument in addition to a class name. (reported by
3705 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3706 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3707 (reported by Bruno Haible; patch from Gerd Moellmann)
3708 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3710 * bug fix: more cleanups to the floating point exception handling on
3711 x86-64 (thanks to James Knight)
3712 * bug fix: the compiler does not try to constant fold calls of
3713 COERCE and BIT-* functions when they return freshly constructed
3714 objects. (reported by Nikodemus Siivola and Paul Dietz)
3715 * optimization: improved the MIPS versions of generic (in the
3716 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3717 * optimization: direct conversion of (unsigned-byte 32) to floats on
3718 the PowerPC platform.
3719 * optimization: structure instances with raw slots now use less
3720 memory, and probably show better memory locality. (thanks to
3722 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3723 are treated as requests for stack allocation on the x86-64,
3724 Alpha-32, PPC and SPARC platforms.
3725 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3726 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3727 (thanks to Tony Martinez)
3729 ** gcing a dead thread can no longer lead to lockups
3730 ** threads block signals until they are set up properly
3731 ** errno is no longer shared by threads
3732 ** interrupt-thread restores the eflags register on x86
3733 ** fixed some lockups due to gc/thread interaction
3734 * fixed some bugs revealed by Paul Dietz' test suite:
3735 ** invalid dotted lists no longer raise a read error when
3736 *READ-SUPPRESS* is T
3737 ** signal an error if a symbol that names a declaration is used
3738 as the name of a type, or vice versa
3739 ** allow using the (declare (typespec var*)) abbreviation for
3740 (declare (type typespec var*)) with all type specifiers
3741 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3742 ** always return NIL from PPRINT-POP when OBJECT is NIL
3743 ** don't signal errors when pretty-printing malformed LABELS,
3744 FLET or MACROLET forms
3745 ** declarations in a DOLIST body are also in scope for the
3747 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3749 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3752 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3753 * fixed cross-compiler leakages that prevented building a 32-bit
3754 target with a 64-bit host compiler.
3755 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3756 opened with :IF-EXISTS :OVERWRITE.
3757 * fixed bug 281: error for an invalid qualifier in a short-form method
3758 combination method is not signalled until the faulty method is called.
3759 * bug fix: iteration variable type inferrer failed to deal with open
3760 intervals. (reported by Alan Shields)
3761 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3762 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3763 or more runtime options were provided to the sbcl binary.
3764 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3765 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3766 * optimization: there's now a fast-path for fixnum arguments in the
3767 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3768 * optimization: the code generated on x86-64 is more compact thanks
3769 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3770 * bug fix: floating-point exception handling now partly works on
3771 x86-64. (Thanks to James Knight)
3772 * improvement to the MIPS backend from Thiemo Seufer: C-style
3773 64-bit long long arguments and return values to alien functions
3775 * fixed some bugs revealed by Paul Dietz' test suite:
3776 ** the type-error signalled from WARN has a filled-in DATUM slot.
3777 ** the type-error required when a stream is not associated with
3778 a file has the stream as its datum.
3779 ** type-errors on single-floats on x86-64 no longer have
3780 :INVALID-OBJECT as the datum
3781 ** the type-errors signalled for invalid function names now have
3782 a correct expected type
3783 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3784 for structures defined with a :TYPE. Documentation strings for
3785 typed structures are no longer immediately discarded
3786 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3787 broadcast streams and synonym streams. FILE-LENGTH now also works
3788 on broadcast streams.
3790 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3791 * incompatible change: the --noprogrammer option, deprecated since
3792 version 0.7.5, has been removed. Please use the equivalent
3793 --disable-debugger option instead.
3794 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3796 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3797 inoperational for a while now) has been completely removed.
3798 * null lexical environments are now printed as #<NULL-LEXENV>,
3799 significantly reducing the amount of clutter in typical backtraces.
3800 * documentation on weak pointers, finalization, and after GC hooks
3801 has been added to the manual.
3802 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3803 as other specialized array types, is much faster. SUBSEQ and
3804 COPY-SEQ on such arrays have also been sped up.
3805 * optimization: EQL is now more efficient when at least other argument
3806 is known to be of type (OR FIXNUM (NOT NUMBER)).
3807 * fixed bug: the runtime is now less vulnerable to changes in the
3808 size of the SBCL object on OS X, and virtual memory is reserved for
3809 all spaces that need to be at a fixed address.
3810 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3811 * fixed bug: finalizers and after GC hooks that cause consing are now
3813 * fixed bug: compiler error messages and summaries are now printed to
3814 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3815 * fixed inference of the upper bound of an iteration variable.
3816 (reported by Rajat Datta).
3817 * fixed bug 211e: calling local functions with duplicated constant
3818 keyword argument no longer causes a bogus style warning about an
3820 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3821 ftype declaration to be disregarded. (reported by Dave Roberts)
3822 * fixed bug 373: caused by erronous compilation of references to alien
3823 variables in the runtime on ppc/darwin.
3824 * fixed bug 376: CONJUGATE type deriver.
3825 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3826 (reported by Baughn on #lisp)
3827 * a cross-compiler bug on non-x86 platforms has been identified and
3828 fixed. (thanks to Bruno Haible)
3829 * improvements to the MIPS runtime code for increased stability.
3830 (thanks to Thiemo Seufer)
3831 * increased the maximimum compact environment size to allow
3832 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3833 * partial workaround for bug 135: don't name the function we're
3834 calling for hairy cases of EVAL, so as not to accumulate one environment
3835 entry per call to EVAL. (reported by Kevin Reid)
3836 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3837 * optimization: type testing for non-vector arrays should be faster.
3838 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3840 * bug fix: setting 31st element of a bit vector to zero did not work
3842 * bug fix: redefining a class definition which failed due to a
3843 previous accessor / function clash now works (but see BUGS entry
3844 #380 for more problems in this area). (thanks to Zach Beane)
3845 * the long form of DEFINE-METHOD-COMBINATION disables method group
3846 checking when given a single method group with pattern *. (thanks
3848 * on x86 compiler supports stack allocation of results of simple
3849 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3850 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3851 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3852 * fixed some bugs related to Unicode integration:
3853 ** the restarts for recovering from input and output encoding
3854 errors only appear when there is in fact such an error to
3856 * fixed some bugs revealed by Paul Dietz' test suite:
3857 ** MISC.549 and similar: late transformation of unsafe type
3858 assertions into derived types caused unexpected code
3860 ** SCALE-FLOAT type deriver is less wrong.
3861 ** type derivers for EXP, LOG and similar functions compute result
3862 types for complex arguments better.
3863 ** (MISC.563) CONJUGATE type deriver works for very restricted
3865 ** out-of-line type testers for character strings are available.
3866 ** EQUAL compiler transform understands specialness of objects
3868 ** accessing double-floats stored on the stack now works on x86-64.
3869 ** debugger internals could sometimes create invalid lispobjs,
3870 resulting in GC crashes.
3871 ** MISC.548: type check weakening can convert required type into
3873 ** initialization forms for bindings are not in scope of free special
3876 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3877 * incompatible change: thread support for non-NPTL systems has
3878 been removed - locking is buggy and unreliable. A threaded
3879 SBCL build will now warn at startup and refuse to create
3880 new threads, unless futex support is detected in the kernel
3881 * incompatible change: the top level REPL now has only an ABORT
3882 restart associated with it, not TOPLEVEL and ABORT as it used to.
3883 TOP and TOPLEVEL are now available as debugger commands for
3884 returning to the top level.
3885 * incompatible change: forms evaluated in the REPL now use the
3886 global optimization policy.
3887 * incompatible change: user- and system-initialization files are
3888 no longer processed with LOAD, but by READ and EVAL; hence the
3889 global optimization policy, startup package, readtable, etc,
3891 * The .fasl file format number has been incremented because of
3892 various incompatible changes.
3893 * internal entry point details and argument counts no longer appear
3894 in backtraces unless explicitly requested by setting
3895 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3896 * built-in and standard functions no longer have names like "top
3897 level local call to FOO".
3898 * fixed bug 32: functions defined in non-null lexical environments
3899 now have more legible printed representation
3900 * fixed bug 33: functions defined in non-null lexical environemnts
3901 are now more amenable to inspection by INSPECT.
3902 * workaround for bug 354: XEPs no longer appear in backtraces unless
3903 explicitly requested.
3904 * fixed bug: receiving the signal which results from attempting to
3905 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3906 SIGBUS on other *BSDs) on architectures where the C stack is also
3907 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3908 to debugger confusion or wild instability. (reported by Cheuksan
3910 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3911 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3912 (reported by Lutz Euler)
3913 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3914 compiled code. (reported by Paul Dietz)
3915 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3916 specialized parameter to a method to something that is not TYPEP
3917 the specializer is now possible.
3918 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3919 face of package deletion.
3920 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3921 pathname. (reported by David Tolpin on c.l.l)
3922 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3923 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3924 STRING-STREAM and FILE-STREAM, respectively.
3925 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3926 than previously; in addition, its test suite is now run on build.
3927 (thanks to Luke Gorrie)
3928 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3929 * optimization: added a immediate representation for single-floats
3931 * fixed some bugs revealed by Paul Dietz' test suite:
3932 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3933 ** attempting to create a package with a colliding nickname causes
3934 correctable errors to be signalled.
3935 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3936 ** several x86-64 backend bugs related to sign-extension of immediate
3939 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3940 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3941 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3943 * fixed loading of multiply forward-referenced layouts.
3944 (thanks to Cheuksan Wang)
3945 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3946 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3947 (see COMPILE-FILE documentation for details of :PRINT option)
3948 * fixed bugs 19 and 317: fixed-format floating point printing is
3949 more accurate. This also fixes a bug reported by Adam Warner
3950 related to the ~@F format directive.
3951 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3953 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3954 dispatch table if the from-char is a dispatch macro character.
3955 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3956 by the wordsize no longer ignore the last word. (reported by Lutz
3958 * fixed bug in type checking of dynamic-extent variables. (reported
3960 * optimization: sequence traversal functions use their freedom to
3961 coerce function designators to functions.
3962 * optimization: code with many calls to CLOS methods specialized on
3963 CLOS classes has had redundant type checks removed.
3964 * optimization: added declarations to speed up operations that access
3965 the internal character database (for example STRING-UPCASE)
3966 * optimization: comparison operations between floats and sufficiently small
3967 fixnums no longer create extra rationals
3968 * fixed some bugs related to Unicode integration:
3969 ** portions of multibyte characters at the end of buffers for
3970 character-based file input are correctly transferred to the
3971 start of the buffer at the next read.
3972 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3973 passing it through to OPEN.
3974 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3975 argument given to internal calls to OPEN.
3976 ** the built-in comment readers (introduced by character sequences
3977 ";" and "#|") are more forgiving to encoding errors; they will
3978 STYLE-WARN and then attempt to resync the stream at a character
3979 boundary. (thanks to Teemu Kalvas)
3980 * fixed some bugs in the x86-64 port:
3981 ** Negative short int return values from c-calls are sign-extended
3983 ** The stack is aligned to 16-bytes for c-calls, as required by
3984 the ABI. (thanks to Cheuksan Wang)
3985 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3986 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3987 for enums. (thanks to Vincent Arkesteijn)
3988 ** Multiple small optimizations and bugfixes for floating point
3990 * fixed some bugs revealed by Paul Dietz' test suite:
3991 ** Space, Tab, Linefeed, Return and Page have the invalid
3992 secondary constituent character trait.
3993 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3995 ** WITH-INPUT-FROM-STRING should only update the index place on
3997 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3998 works more reliably.
3999 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4000 with one-dimensional arrays with fill pointers.
4001 ** TYPE-OF failed on a complex with an integer realpart and a
4003 ** compiler failure during type inference for the code of form
4004 (IF (EQL X (THE ...)) ...) (MISC.535).
4006 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4007 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4008 platform. The port supports 61-bit fixnums, large memory spaces
4009 and reloading shared object files.
4010 * enhancement: saving cores with foreign code loaded is now
4011 supported on ppc/Darwin in addition to the previously supported
4013 * enhancement: the statistical profiler now walks deeper into the
4014 call stack for more meaningful call-graphs and accrued time
4015 reports (x86/x86-64 only). It also now reports time spent in
4017 * enhancement: it is now possible to trace most individual methods
4018 of a generic function in addition to tracing the generic function
4020 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4022 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4023 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4024 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4025 produces an error. (thanks to Vincent Arkesteijn)
4026 * bug fix: NAMESTRING on pathnames with :WILD components in their
4027 directories works correctly. (thanks to Artem V. Andreev)
4028 * fixed bug 125: compiler preserves identity of closures. (reported
4030 * bug fixed: functions with &REST arguments sometimes failed with
4031 "Undefined function" when compiled with (DEBUG 3). (reported by
4033 * bug fix: overflow during compiling of setting element of a bit
4034 vector with constant index and value. (reported by Timmy Douglas)
4035 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4036 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4037 * on x86 compiler partially supports stack allocation of dynamic-extent
4039 * GO and RETURN-FROM do not check the extent of their exit points
4040 when compiled with SAFETY 0.
4041 * fixed some bugs related to Unicode integration:
4042 ** encoding and decoding errors are now much more robustly
4043 handled; it should now be possible to recover even from invalid
4044 input or output to the terminal. (thanks to Teemu Kalvas)
4045 ** provided a first cut at implementing STRING-TO-OCTETS and
4046 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4047 ** altered the SB-MD5 contributed module slightly, changing the
4048 interface just enough for it to be supportable for builds where
4049 lisp characters are not eight bits.
4050 * fixed some bugs revealed by Paul Dietz' test suite:
4051 ** the FORMATTER-generated functions for ~V[ conditionals require
4052 the correct number of arguments.
4053 ** READ-FROM-STRING returns the mandated second value when applied
4054 to displaced strings.
4055 ** the #\Rubout and #\Backspace characters are treated as invalid
4056 constituent characters by the tokenizer.
4058 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4059 * new feature: reloading changed shared object files with
4060 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4061 * new feature: references to foreign variables and functions
4062 can now be compiled and loaded before the corresponding shared
4063 object file is loaded, as long as the foreign definitions are
4064 available at runtime.
4065 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4066 supported. (thanks to Dan Debertin)
4067 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4068 just keywords. (thanks to Vincent Arkesteijn)
4069 * fixed bug #331: structure-class instances corresponding to
4070 DEFSTRUCT forms are now created eagerly.
4071 * fixed bug #345: backtraces from calls to undefined functions work
4072 on x86 as well. Related bug #61 is now also partially fixed on x86
4073 (backtraces from throws to unknown catch tags.)
4074 * bug fix: lambda-list parsing is now stricter vrt. order and number
4075 of lambda-list keywords.
4076 * bug fix: as specified by AMOP, an error is signalled if a
4077 class-option appears multiple times in a DEFCLASS form. (reported
4079 * bug fix: RANDOM can be compiled when the compiler derives the type
4080 of its numeric argument as a disjoint set of small integers.
4081 (reported by Paul Dietz)
4082 * bug fix: starting a core saved with shared objects loaded when
4083 those objects are not available no longer causes threaded SBCL to
4084 hang. (reported by Sean Ross)
4085 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4087 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4088 argument, which must always be NIL. (reported by Kalle Niemitalo)
4089 * bug fix: printing 1.0d+23 no longer results in an error.
4090 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4091 * bug fix: structure slot setters preserve evaluation order. (thanks
4093 * fixed some bugs related to Unicode integration:
4094 ** RUN-PROGRAM can allow its child to take input from a Lisp
4095 stream. (reported by Stefan Scholl)
4096 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4097 locales. (reported by Ken Causey)
4098 * fixed some bugs revealed by Paul Dietz' test suite:
4099 ** INCF, DECF and REMF evaluate their place form as specified in
4101 ** FORMATTER expands ~{ ~} iteration directives with V or #
4102 parameters correctly.
4103 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4104 consequent uses no arguments correctly.
4105 ** the system has a partial understanding of the (COMPLEX RATIO)
4107 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4110 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4111 * new feature: a build-time option (controlled by the :SB-UNICODE
4112 keyword feature, enabled by default) for building the system with
4113 support for the entire 21-bit character space defined by the
4115 * new feature: the system now has rudimentary external-format
4116 support; the primary user-visible change at this time is that
4117 characters with the high bit set (such as lower-case-e-acute) will
4118 print correctly to a terminal in a UTF-8 environment.
4119 * minor incompatible change: BASE-CHAR no longer names a class;
4120 however, CHARACTER continues to do so, as required by ANSI.
4121 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4122 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4123 has been moved to the SB-EXT package (temporarily re-exported from
4125 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4126 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4128 * fixed bug #351: better error-handlind and reporting for malformed
4130 * fixed bug #350: bignum-printing is now more memory-efficient,
4131 allowing printing of very large bignums, eg. (expt 2 10000000).
4132 (reported by Bruno Haible)
4133 * fixed bug #302: better primitive-type selection for intersection
4135 * fixed bug #308: non-graphic characters now all have names, as
4136 required. (reported by Bruno Haible)
4137 * bug fix: redefining a class with different superclasses now correctly
4138 removes it from the direct-subclasses of its previous superclasses.
4139 (reported by David Morse)
4140 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4141 new value now works. (reported by Bruno Haible)
4142 * bug fix: correct canonicalization of multiple non-standard slot
4143 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4144 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4145 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4146 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4147 now exists, an signals an error.
4148 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4149 during macroexpansion for non-iteration variables as well. (reported
4150 by Bruno Haible for CMUCL)
4151 * bug fix: Cyclic structures and unprintable objects in compiler
4152 messages no longer cause errors. (reported by Bruno Haible)
4153 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4154 and READ-FROM-STRING all now return a primary value of NIL if
4155 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4156 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4157 (reported by Bruno Haible for CMUCL)
4158 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4159 do not designate a condition. (reported by Bruno Haible for
4161 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4162 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4163 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4164 permitting resolution in favour of any of the conflicting symbols.
4165 (reported by Bruno Haible for CMUCL)
4166 * bug fix: EQUAL compiler optimizations is less aggressive on
4167 strings which can potentially compare true despite having distinct
4168 specialized array element types.
4169 * bug fix: unit enumerations can be defined without dividing by
4170 zero. (thanks to Vincent Arkesteijn)
4171 * FORMAT compile-time argument count checking has been enhanced.
4172 (report from Bruno Haible for CMUCL)
4173 * a partial workaround for the bug 262: the compiler does not try to
4174 inline-expand a local function doing RETURN-FROM from a deleted
4175 BLOCK. (thanks to Peter Denno for the bug report and to David
4176 Wragg for the simple test case)
4177 * fixed some bugs revealed by Paul Dietz' test suite:
4178 ** RENAME-PACKAGE allows all package designators as new package
4180 ** constraint propagation and lambda variable substitution are
4181 more cautious in dealing with partially deleted code.
4182 ** compiler sometimes lost reoptimization passes.
4183 ** CERROR, given a condition as condition designator, passes its
4184 remaining arguments to the continue format control without
4186 ** Case-altering FORMAT directives work correctly on non-ASCII
4188 ** The REAL type specifier handles bounds outside the floating
4189 point ranges without signalling FLOATING-POINT-OVERFLOW.
4190 ** Functions with IR1-transformations can create intercomponent
4191 references to global functions.
4192 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4194 ** FORMAT ~R treats a nil value for its first parameter correctly.
4196 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4197 * enhancement: saving cores with foreign code loaded is now
4198 supported on x86/NetBSD and sparc/Linux in addition to the previously
4199 supported platforms.
4200 * bug fix: on some platforms repeated installations caused multiple
4201 copies of HTML documentation to be installed -- should not happen
4202 any more. (reported by Stefan Scholl)
4203 * bug fix: parsing self-recursive alien record types multiple times
4204 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4205 original patch by Helmut Eller for CMUCL)
4206 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4207 (thanks to Richard Kreuter)
4208 * bug fix: defining classes whose accessors are methods on existing
4209 generic functions in other (locked) packages no longer signals
4210 bogus package lock violations. (reported by François-René Rideau)
4211 * bug fix: special variables as DEFMETHOD parameters no longer have
4212 associated bogus type declarations. (reported by David Wragg and
4214 * bug fix: read-write consistency on streams of element-type
4215 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4216 * bug fix: redefiniton of the only method of a generic function with
4217 no DEFGENERIC no longer emits a full WARNING. In addition,
4218 redefinition of generic functions with no DEFGENERIC to an
4219 incompatible lambda list now signals an error. (thanks to Zach
4221 * bug fix: DEFGENERIC now works even when there's a function of the
4222 same name in an enclosing lexical environment. (thanks to Zach
4224 * fixed compiler failure, caused by instrumenting code during
4225 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4226 * optimization: added loop analysis and improved register allocation
4227 * fixed some bugs revealed by Paul Dietz' test suite:
4228 ** POSITION on displaced vectors with non-zero displacement
4229 returns the right answer.
4230 ** (SIMPLE-STRING) is a valid type specifier for sequence
4232 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4234 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4235 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4237 ** The justification version of the FORMAT ~< directive treats
4238 non-zero minpad parameter correctly.
4240 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4241 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4242 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4243 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4244 the supported interface.
4245 * new feature: Single-stepping of code compiled with DEBUG 2 or
4246 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4247 * new feature: saving cores with foreign code loaded is now
4248 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4249 Timothy Moore's work for CMUCL)
4250 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4251 parameters to * instead of NIL if no initform is supplied.
4252 (reported by Johan Bockgaard)
4253 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4254 correctly when FUNCALL appears as the car of the form. Note:
4255 despite this FUNCALL forms are not currently subject to
4256 compiler-macro expansion. (port of Raymond Toy's fix for the
4257 same from CMUCL, reported by Johan Bockgaard)
4258 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4259 (thanks for Teemu Kalvas)
4260 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4261 case instead of terminating the iteration (thanks for Julian
4262 Squires, Sean Champ and Raymond Toy)
4263 * bug fix: incorrect expansion of defgeneric that caused a style
4264 warning. (thanks for Zach Beane)
4265 * bug fix: slot accessor effective method computation works properly
4266 for classes with multiple non-standard applicable methods on
4267 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4268 * on x86 compiler supports stack allocation of results of LIST and
4269 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4270 CMUCL implementation by Gerd Moellmann)
4271 * fixed some bugs revealed by Paul Dietz' test suite:
4272 ** FORMAT strings with both the ~<~:;~> form of the justification
4273 directive and pretty-printing directives cause an error.
4275 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4276 * incompatible change: the internal functions
4277 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4278 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4279 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4280 instead of the old functions.
4281 * new feature: on platforms where "dladdr" is available foreign
4282 function names now appear in backtraces. (based on Helmut Eller's
4284 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4285 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4287 * documentation: ASDF manual is now distributed with SBCL.
4288 * bug fix: SBCL can now load its contributed modules with REQUIRE
4289 even if the system-provided entries have been removed from
4290 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4292 * bug fix: backtraces involving undefined functions or assembly
4293 routines are more informative. (thanks to Brian Downing)
4294 * bug fix: mutually referent alien structures now work correctly.
4295 (reported by Rick Taube)
4296 * bug fix: structures defined by WITH-ALIEN can be referred to
4297 within other definitions in the same WITH-ALIEN.
4298 * bug fix: division operators (MOD, TRUNCATE and the like) with
4299 constant zero divisors and integer dividends no longer generate
4301 * bug fix: provide default methods for INPUT-STREAM-P and
4302 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4303 * bug fix: improve the detection and resolution of MOP metacycles
4304 (where effective method computation depends on the generic function
4305 having its effective method computed). (reported by Bruno Haible)
4306 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4307 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4308 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4309 * bug fix: pathnames with relative directory components can be
4310 represented relative to default pathnames.
4311 * optimization: in taking the GCD of bignums, reduce the two bignums
4312 to approximately the same size (using Euclid's algorithm) before
4313 applying the more sophisticated binary GCD. (thanks to Juho
4315 * optimization: COUNT on bitvectors now operates word-at-a-time.
4316 * optimization: ASH with a positive, but not necessarily constant,
4317 (leftwards) shift, when in a modular context, is compiled to a
4319 * fixed some bugs revealed by Paul Dietz' test suite:
4320 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4321 if the corresponding argument is NIL.
4322 ** FORMAT directives accepting a minpad parameter treat negative
4324 ** literal commas as character parameters to FORMAT directives are
4326 ** literal spaces directly after ~<Newline> directives within a
4327 format-logical-block (~:< ~@:>) do not induce :FILL-style
4328 conditional newlines.
4329 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4330 as specified: it no longer includes conditional newlines).
4331 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4333 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4334 :PER-LINE-PREFIX argument does not evaluate to a string.
4336 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4337 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4338 the manual for details; for now, package locks can be disabled by
4339 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4340 if no major problems are found then it is likely that they will be
4341 compiled in unconditionally.
4342 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4343 unsupported operators on all platforms. To load a shared library
4344 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4345 object file, link it into a shared library outside of SBCL and
4346 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4348 * bug workaround: ROOM T and the GC were not working together
4349 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4350 reporting facility aren't preserved. That reporting has been
4351 disabled, so now until and unless someone figures out how to make it
4352 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4353 * minor incompatible change: as threatened around sbcl-0.8.0, the
4354 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4355 The symbols are also exported from SB-PCL for backwards
4356 compatibility, but more so than before SB-PCL should be treated as
4357 an implementation-internal package.
4358 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4360 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4361 It is known as of this release not to work on the Alpha, however.
4362 * fixed bug #167: errors signalled due to illegal syntax in method
4363 bodies are now more legible.
4364 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4365 designators and can hence be used with TYPEP.
4366 * fixed bug #333: CHECK-TYPE now ensures that the type error
4367 signalled, if any, has the right object to be accessed by
4368 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4369 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4370 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4372 * fixed bug #334: programmatic addition of slots using specialized
4373 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4374 and :ALLOCATION :CLASS slots.
4375 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4376 float exponents. (rereported by Peter Seibel)
4377 * fixed a bug: #\Space (and other whitespace characters) are no
4378 longer considered to be macro characters in standard syntax by
4379 GET-MACRO-CHARACTER.
4380 * fixed bug: initialization of condition class metaobjects no longer
4381 causes an instance of the condition to be created. (reported by
4383 * fixed bug: it is now possible to have slots such that
4384 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4385 description is neither :INSTANCE nor :CLASS.
4386 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4387 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4388 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4389 non-standard SLOT-DEFINITION-ALLOCATION values.
4390 * fixed bugs: various race conditions handling exiting threads.
4391 CL-PPCRE's thread torture test now passes.
4392 * fixed arguably-a-bug: GC time proportional to number of threads in
4393 system even when most of them are idle
4394 * optimization: improved performance of BIT and SBIT on bit-vectors.
4395 * .fasl file incompatibility: The fasl file version number has
4396 been incremented because of changes associated with package locks.
4398 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4399 * minor incompatible change: the system no longer provides
4400 optimization hints (conditions which are TYPEP
4401 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4402 mode; these hints are still emitted when higher SPEED optimization
4404 * new contrib module: a sampling profiler (profiling by statistical
4405 sampling, rather than by instrumenting functions) is available as
4406 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4407 * the behaviour of the standard function ED is now customizeable by
4408 third parties through a hook variable: see ED's documentation
4409 string for information on the protocol.
4410 * the compiler no longer emits efficiency notes for (FUNCALL X)
4411 when the type of X is uncertain under default optimization
4413 * fixed bug 276: mutating a binding of a specialized parameter to a
4414 method to something that is not TYPEP the specializer is now
4416 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4417 exhibit the required behaviour on the x86 platform. (thanks to
4418 Peter van Eynde, Eric Marsden and Bruno Haible)
4419 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4420 even for difficult arguments. (reported by Peter Graves)
4421 * fixed bug 141a: the backquote printer now descends quoted
4423 * fixed another bug in backquote printing: no more destructive
4424 modification of the form's list structure. (reported by Brian
4426 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4427 move between its address being taken and the call to
4428 interrupt_thread, fixing a crashing race condition.
4429 * the SB-POSIX contrib implementation has been adjusted so that it
4430 no longer exhibits ridiculously poor performance when constructing
4431 instances corresponding to C structs.
4433 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4434 * minor incompatible change: the sb-grovel contrib now treats C
4435 structures as alien (in the sense of SB-ALIEN) objects rather than
4436 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4437 has implications for memory management of client code
4438 (sb-grovel-returned objects must now be manually managed) and for
4439 type safety (alien objects now have full types).
4440 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4441 used to control emission of compiler diagnostics, rather than the
4442 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4443 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4444 quality should be considered deprecated.
4445 * install.sh now installs the user manual as well
4446 * (not quite a new documentable feature, but worth considering in
4447 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4448 beginnings of a semantically meaningful condition hierarchy is
4449 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4451 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4452 designator as the defaults argument.
4453 * fixed bug: Displaced arrays whose displaced-to array has become
4454 too small now cause ARRAY-DIMENSION to signal an error, providing
4455 for safer bounds-checking. (reported by Bruno Haible)
4456 * fixed bug: DEFCLASS slot definitions with identical :READER and
4457 :WRITER names now signal a reasonable error. (reported by Thomas
4459 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4461 * fixed bug: Invalid slot specification errors now print correctly.
4462 (thanks to Zach Beane)
4463 * fixed bug 320: Shared to local slot value transfers in class
4464 redefinitions now happen corrently from superclasses as
4465 well. (reported by Bruno Haible)
4466 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4468 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4469 improper lists correctly. (reported by Bruno Haible)
4470 * fixed bug 313: source-transform for <fun-name> was erroneously
4471 applied to a call of a value of a variable with name <fun-name>.
4472 (reported by Antonio Menezes Leitao)
4473 * fixed bug 307: The obsolete instance protocol ensures that
4474 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4475 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4476 remove dead unknown-values globs from the middle of the stack.
4477 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4478 easier to resume long computations after using *BREAK-ON-SIGNALS*
4479 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4480 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4481 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4482 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4483 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4484 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4486 * fixed a (fairly theoretical) bug in string printing: if
4487 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4488 does not have array-element-type equal to the most general string
4490 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4491 function name. (thanks to Nikodemus Siivola)
4492 * fixed bug: compile-time format string checker failed on
4493 non-closed ~{. (reported by Thomas F Burdick)
4494 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4495 don't warn on legal loop code involving more than one aggregate
4496 boolean. (thanks to Nikodemus Siivola)
4497 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4498 in keyword position to MAKE-PACKAGE was not being reported as
4500 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4501 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4503 * fixed bugs 280 and 312: the checking for multiple definitions in a
4504 file is less likely to become confused by uses of inline
4506 * fixed bug: the #S reader macro performs the keyword coercion
4507 specified for slot names. (reported by Kalle Niemitalo)
4508 * fixed bug: lambda lists may contain symbols whose names start with
4509 & but are not lambda-list-keywords; their occurrence triggers a
4511 * fixed bug 321: define-method-combination argument lambda lists do
4512 not cause invalid code to be generated when &optional or &aux
4513 variables have default values. (reported by Bruno Haible)
4514 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4515 have CLOS classes; this appears also to have fixed reported
4516 instability in stack exhaustion detection.
4517 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4518 MUFFLE-WARNING when no associated restart is present is now
4520 * optimization: rearranged the expansion of various defining macros
4521 so that each expands into only one top-level form in a
4522 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4524 * optimization: used a previously little-used slot in symbols to
4525 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4527 * fixed some bugs revealed by Paul Dietz' test suite:
4528 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4530 ** Fixed an optimization bug related to inheritance of initforms
4531 from local to shared slots.
4532 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4533 ** CAST optimizer forgot to flush argument derived type.
4534 ** print/read consistency on floats is now orders of magnitude
4535 more likely. (thanks also to Bruno Haible for a similar report
4537 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4538 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4539 for objects of type REAL. Make it so.
4540 ** SXHASH is specified (infelicitously) to respect similarity,
4541 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4542 it so. (thanks to Markus Ziegler)
4543 ** on the Alpha, the compiler succeeds in compiling functions
4544 returning a known number of arguments greater than 63.
4545 ** fixed handling of invalid NIL arguments in keyword position
4547 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4549 ** provided a readably-printable representation for RANDOM-STATE
4551 ** ensured that pathnames, where they have a namestring, always
4552 print using #P"..." syntax.
4554 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4555 * Support for the forthcoming 2.0 version of the NetBSD kernel
4556 running on x86 hardware has been added. (thanks to Perry
4557 E. Metzger most immediately, and others for their past work)
4558 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4559 current release version; SBCL's OpenBSD support had been broken
4560 since about the time of OpenBSD's switch to ELF binary format.)
4561 * [placeholder for DX summary]
4562 ** user code with &REST lists declared dynamic-extent, under high
4563 speed or space and low safety and debug optimization policy.
4564 * The manual has been converted to Texinfo format and the debugger
4565 chapter from the cmucl manual has been added.
4566 * A facility has been added to extract documentation strings from
4567 sbcl and store them as Texinfo-formatted snippets for inclusion in
4568 the manual (via Texinfo's @include directive)
4569 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4570 the test case to Dave Roberts)
4571 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4572 pointers. (reported by Sean Ross)
4573 * bug fix: PROFILE output is printed nicely even for large numerical
4574 values. (thanks to Zach Beane)
4575 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4576 greater than 32 handle EOF correctly.
4577 * bug fix: on X86 an immediate argument of the IMUL instruction is
4578 correctly printed in disassembly. (thanks to Lutz Euler)
4579 * bug fix: class slots in redefined classes preserve their old
4580 values. (thanks to Bruno Haible and Nikodemus Siivola)
4581 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4582 succeeds. (reported by Marco Baringer)
4583 * fixed some bugs revealed by Paul Dietz' test suite:
4584 ** READ-SEQUENCE now works on ECHO-STREAMs.
4585 ** RATIONALIZE works more according to its specification. (thanks
4588 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4589 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4590 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4591 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4592 should matter to you only if you rebind the printer control
4593 variables and then find you want different bindings in the
4594 debugger than in the ordinary execution of your program.)
4595 * The runtime build system has been tweaked to support building
4596 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4597 assembler and linker. (thanks to Nikodemus Siivola)
4598 * Unbound, undefined, undeclared variables now trigger full
4599 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4600 more often programmer error than deliberate exploitation of undefined
4602 * optimization: the hash algorithm for strings has changed to one
4603 that is less vulnerable to spurious collisions. (thanks to Juho
4605 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4606 needless bounds checking. (thanks to Juho Snellman)
4607 * optimization: implemented multiplication as a modular
4608 (UNSIGNED-BYTE 32) operation on the PPC backend.
4609 * fixed some bugs revealed by Paul Dietz' test suite:
4610 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4612 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4613 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4614 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4616 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4618 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4620 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4621 their output stream on EOF from read.
4622 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4623 have been read to end-of-file.
4624 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4626 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4627 description of determination of which consecutive characters
4629 ** Printing the "Space" character with escaping on now yields "#\\ ",
4630 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4631 ** Reading floating-point numbers with *READ-BASE* set to a number
4632 less than 10 works correctly.
4633 ** Reading floating-point numbers with *READ-BASE* set to a number
4634 more than 10 works correctly.
4635 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4636 the readtable currently in effect.
4638 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4639 * minor incompatible change: parsing of namestrings on a physical
4640 (Unix) host has changed; numbers after the final #\. in a
4641 namestring are no longer interpreted as a version field. This is
4642 intented to be largely invisible to the user, except that the
4643 meaning of the namestring "*.*.*" has changed: it now refers to a
4644 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4645 should usually be replaced by
4646 (make-pathname :name :wild :type :wild :version :wild)
4647 with the added benefit that this is more likely to be portable.
4648 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4649 option to OPEN now signals an error if the file being opened
4650 exists; this may have an impact on existing code.
4651 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4652 signals received, on the PowerPC platforms (both Linux and
4653 Darwin). (thanks to Pierre Mai for pointing out the location of
4655 * several fixes on OS X: The system now builds and runs cleanly on
4656 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4657 (thanks to Brian Mastenbrook)
4658 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4659 second-resolution: integer multiples of 1/3600 between -24 and 24.
4660 (thanks to Vincent Arkesteijn)
4661 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4662 type when called with 1 argument; PEEK-CHAR checked type of
4663 PEEK-TYPE only after having read first character from a
4664 stream. (reported by Peter Graves)
4665 * bug fix: the garbage collector now has much better locality
4666 behaviour, and in particular no longer treats all memory as being
4667 exhausted when many small objects point to each other in a deeply
4669 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4670 recognized as being TYPEP their class.
4671 * bug fix: the PUSHNEW documentation string has been corrected.
4672 (thanks to Vincent Arkesteijn)
4673 * bug fix: defaulting of the value for the last of an atypically
4674 large number of multiple values being bound was not being
4675 performed correctly on the Alpha or PPC platforms
4676 * optimization: implemented multiplication as a modular
4677 (UNSIGNED-BYTE 32) operation on the x86 backend.
4678 * optimization: SEARCH on simple-base-strings can now be open-coded.
4679 (see also contrib/compiler-extras.lisp for inspiration for
4680 teaching the compiler about the Boyer-Moore algorithm).
4681 * value, returned by MAX (and MIN) called with several EQUALP, but
4682 not EQL, arguments now does not depend on compiler settings.
4683 * fixed some bugs revealed by Paul Dietz' test suite:
4684 ** in stack analysis liveness information is propagated from
4685 non-local entry points.
4686 ** pathwise CAST removing failed when the CAST node did not start
4688 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4689 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4691 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4692 host is already defined.
4693 ** RENAME-FILE works on streams instead of signalling an internal
4695 ** PEEK-CHAR uses the current readtable when determining whether
4696 or not a character is whitespace.
4697 ** MERGE-PATHNAMES handles the case when the pathname does not
4698 specify a name while the default-pathname specifies a version.
4699 ** Pathnames now stand a better chance of respecting print/read
4701 ** Attempting to use standardized file system operators with a
4702 pathname with invalid :DIRECTORY components signals a
4704 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4706 ** DIRECTORY on logical pathnames is more correct.
4707 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4708 signal a TYPE-ERROR if their argument is not a stream.
4709 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4710 designator argument does not designate a stream.
4711 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4712 examining the synonym.
4713 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4715 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4716 element-type larger than ([UN]SIGNED-BYTE 32).
4718 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4719 * When built with the :SB-FUTEX feature, threaded builds now take
4720 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4721 for faster/more reliable mutex and condition variable support.
4722 * Incompatible change (but one you probably shouldn't have been using
4723 anyway): the interface and code for arbitrating between multiple
4724 threads in the same user session has been redesigned.
4725 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4726 error when called without an explicit environment argument.
4727 (thanks to Nikodemus Siivola)
4728 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4729 confused about their position. (thanks to Adam Warner and Gerd
4731 * bug fix: Pretty printing backquoted forms with unquotations in the
4732 argument list position of various code constructs such as LAMBDA
4733 now works correctly. (reported by Paul Dietz)
4734 * bug fix: Pretty printing unquotations no longer loses all
4735 stream position information.
4736 * optimization: performance of string output streams is now less
4737 poor for multiple small sequence writes.
4738 * optimization: performance of CSUBTYPEP in the presence of complex
4739 expressions involving CONS and NOT many times has been improved.
4740 (reported by Paul Dietz)
4741 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4743 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4744 streams for the REPL, for the debugger, and so on. (thanks to
4746 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4747 * fixed some bugs revealed by Paul Dietz' test suite:
4748 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4749 is ignored if it is too small, rather than propagating through
4750 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4751 ** extremely complex negations of CONS types were not being
4752 sufficiently canonicalized, leading to inconsistencies in
4754 ** VALUES tranformer lost derived type.
4756 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4757 * fixed a bootstrapping bug: the build process no longer assumes
4758 that the various BOOLE-related constants have the same value in
4759 host and target lisps. (noted by Paul Dietz' test suite on an
4760 SBCL binary built from CLISP)
4761 * The system can now be dynamically linked on the MIPS platform,
4762 which enables dynamic loading of foreign code from Lisp. (thanks
4763 to Ralf Baechle for discussions on the MIPS ABI)
4764 * The system now records debugging information for its own source
4765 files in a filesystem-position-independent manner, relative to
4766 the "SYS" logical host.
4767 * fixed a compiler bug: MV-LET convertion did not check references
4768 to the "max args" entry point. (reported by Brian Downing)
4769 * tweaked disassembly notes to be less confident about proclaiming
4770 some instruction as an LRA. (thanks to Brian Downing)
4771 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4772 now each have their own history, command character, and other
4773 characteristics. (thanks to David Lichteblau)
4774 * fixed some bugs revealed by Paul Dietz' test suite:
4775 ** compiler failure in compiling LOGAND expressions including a
4777 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4778 shift greater than 32.
4779 ** FLUSH-DEST did not mark blocks for type check regeneration.
4780 ** HANDLER-CASE failed to accept declarations in handler clauses
4781 in some circumstances.
4783 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4784 * New code in contrib/sb-introspect (still probably not entirely
4785 stable yet) provides some support for smart Lisp development
4786 environments like SLIME.
4787 * The conditions signalled for errors occurring when loading .fasl
4788 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4789 in a way which should help ASDF recover gracefully.
4790 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4791 stuff has been cleaned up. If you code contrib/ stuff, this might
4792 affect you, and you can look at contrib/README, contrib/STANDARDS,
4793 and/or the 0.8.4.27 diff to check.
4794 * In full calls the compiler now does not generate checks for declared
4795 argument types for all arguments.
4796 * various threading fixes
4797 ** and some experimental patches which didn't make it into
4798 the main tree for this release, but which are shipped in
4799 contrib/experimental-thread.patch as a possible fix for some
4800 failures (deadlock, spinning...) in GC-intensive multithreaded
4802 * fixed PPC build problem (source code incompatibility of different
4803 library versions): added offsetof() hackery which attempts to divine
4804 where glibc maintainers put uc_mcontext today
4805 * fixed bug 282: compiler does not trust type assertions while passing
4806 arguments to a full call.
4807 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4808 &OPTIONAL VALUES type parameter.
4809 * fix bug 214: algorithm for noting rejected templates is now more
4810 similar to that of template seletion. (also reported by rydis on
4812 * fixed bug 141b: printing backquoted information readably and prettily
4813 inserts a space where necessary.
4814 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4815 (CHARACTER 10) are now reported as errors, rather than propagated
4816 as unknown types. (reported by piso on #lisp)
4817 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4818 with values NIL and :ERROR. (thanks to Milan Zamazal)
4819 * fixed bug 191c: CLOS now does proper keyword argument checking as
4820 described in CLHS 7.6.5 and 7.6.5.1.
4821 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4822 longer raise an error; further, using a list as a for-as-arithmetic
4823 counter now raises a meaningful error.
4824 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4825 now understood by sequence creation functions such as MAKE-SEQUENCE
4827 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4828 a STRING-INPUT-STREAM.
4829 * compiler enhancement: SIGNUM is now better able to derive the type
4831 * type declarations inside WITH-SLOTS are checked. (reported by
4833 * fixed some bugs revealed by Paul Dietz' test suite:
4834 ** incorrect optimization of TRUNCATE for a positive first
4835 argument and negative second.
4836 ** compiler failure in let-convertion during flushing dead code.
4837 ** compiler failure while deriving type of TRUNCATE on an
4838 interval, containing 0.
4839 ** ASH of a negative bignum by a negative bignum count now returns
4841 ** intersection of CONS types now canonicalizes properly, fixing
4842 inconsistencies in SUBTYPEP.
4844 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4845 * incompatible change: The --disable-debugger command line
4846 option now clobbers the debugger at a more fundamental
4847 level, by redefining #'INVOKE-DEBUGGER instead of by
4848 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4849 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4850 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4851 enter the debugger REPL and then suffer recursive errors
4852 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4853 while under the new system, BREAK in --disable-debugger mode
4854 terminates the system just as an unhandled error would.
4855 * fixed compiler performance when processing loops with a step >1;
4856 * bug fix: DOCUMENTATION now retrieves generic function
4857 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4858 support has been systematized, and now supports the methods
4859 specified by ANSI, along with a default method and a method for
4860 slot documentation. (reported by Nathan Froyd)
4861 * bug fix: effective methods associated with a generic function are
4862 no longer cached over a change of that generic function's method
4863 combination. (reported by Andreas Fuchs)
4864 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4865 names a non-existent directory. (thanks to Andreas Fuchs)
4866 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4867 the PPC platform, lead to stack corruption; this has been fixed.
4868 (reported by Rainer Joswig)
4869 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4870 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4871 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4872 arithmetic in general, is now much more reliable on the PPC
4874 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4875 platform now returns the right answer.
4876 * optimization: restored some effective method precomputation in
4877 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4878 precomputation is now tunable.
4879 * optimization: compiler-internal data structure use has been
4880 reviewed, and changes have been made that should improve the
4881 performance of the compiler by about 20%.
4882 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4883 simple-base-strings and simple-bit-vectors is improved.
4884 * optimization: the optimization of 32-bit logical and arithmetic
4885 functions introduced in version 0.8.3 on the x86 has been
4886 implemented on the mips, ppc and sparc platforms; an
4887 implementation of the same facility, but for 64-bit arithmetic,
4888 has been added for the alpha.
4889 * microoptimization: the compiler is better able to make use of the
4890 x86 LEA instruction for multiplication by constants.
4891 * bug fix: in some situations compiler did not report usage of
4892 generic arithmetic in (SPEED 3) policy.
4893 * bug 145b fix: compiler used wrong type specifier while converting
4894 MEMBER-types to numeric.
4895 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4897 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4898 index argument now works properly on the Alpha platform.
4899 * bug fix: floating point exception treatment on the Alpha platform
4901 * bug fix: FILE-POSITION works much better on string input and
4902 output streams. (thanks to Nikodemus Siivola)
4903 * bug fix: many threading/garbage collection symptoms sorted.
4904 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4905 might be pseudo-atomic.
4906 * internal change: Stopping for GC is now done with signals not
4907 ptrace. GC is now done in whichever thread wanted it, instead of
4909 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4911 * bug fix: result form in DO is not contained in the implicit
4913 * incompatible change: ICR structure is changed; the value part of
4914 CONTINUATION is now called LVAR; corresponding functions are
4915 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4916 * added type deriver for ISQRT (thanks to Robert E. Brown).
4917 * bug fix: better support for loading from the command line when an
4918 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4920 * fixed some bugs revealed by Paul Dietz' test suite:
4921 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4922 ** ROUND and FROUND now give the right answer when given very
4923 small float arguments.
4924 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4926 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4927 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4928 ** LCM should return a non-negative integer.
4929 ** PARSE-INTEGER returned the index of a terminator instead of the
4930 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4931 ** PARSE-INTEGER returned an incorrect index being applied to a
4933 ** LCM with two arguments of 0 returns 0 rather than signalling
4935 ** unsigned addition of a 32-bit constant with the high bit set no
4936 longer causes an internal compiler error on the x86.
4937 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4938 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4939 with negative last argument.
4940 ** byte specifiers with zero size and position no longer cause
4941 an error during type derivation.
4942 ** bignum multiplication on the Alpha platform now returns the
4944 * porting: The system now builds on SuSE AMD64, although it still
4945 generates a 32-bit binary.
4946 * .fasl file incompatibility: The fasl file version number has
4947 been incremented (because of the changes to internal compiler
4948 data structures referred to above).
4950 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4951 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4952 more accurately, on the Darwin kernel running on PowerPC hardware.
4953 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4954 * Compiler code deletion notes now signal a condition of type
4955 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4956 an associated MUFFLE-WARNING restart.
4957 * The compiler now performs limited argument count validation of
4958 constant format strings in FORMAT, and where appropriate in ERROR,
4959 CERROR and WARN. (thanks to Gerd Moellmann)
4960 * New ASDF-INSTALL contrib can be used for automatic download and
4961 installation of third-party Lisp code from CCLAN or other sites
4963 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4964 which forces another thread to execute a function supplied by the
4966 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4967 now accept and act upon their :ELEMENT-TYPE keyword argument.
4968 (reported by Martin Atzmueller, Edi Weitz)
4969 * bug fix: FILE-POSITION now accepts position designators up to
4970 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4971 is the greater. (thanks to Patrik Nordebo)
4972 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4973 Kalle Olavi Niemitalo)
4974 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4975 printable. (reported by Eric Marsden)
4976 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4977 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4978 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4979 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4980 (thanks to Stig Sandoe)
4981 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4982 UNREAD-CHAR now correctly includes the unread character in the
4983 target sequence. (thanks to Gerd Moellmann)
4984 * bug fix in threaded builds: the system can now be suspended and
4985 resumed by shell job control with minimal disruption.
4986 * bug fixes in times and timezones >2038AD
4987 * better handling of "where is GNU make?" problem in build scripts
4988 (thanks to Nikodemus Siivola)
4989 * new optimization: inside a named function any reference to a
4990 function with the same name is considered to be a self-reference;
4991 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4992 optimization quality.
4993 * new optimization on x86: logical functions and + now have
4994 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4995 used when the result is truncated to 32 bits.
4996 * VALUES declaration is partially enabled.
4997 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4998 * fixed some bugs revealed by Paul Dietz' test suite:
4999 ** The system now obeys the constraint imposed by
5000 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5001 types form a lattice under type intersection.
5002 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5003 ** ASSOC now ignores NIL elements in an alist.
5004 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5005 and (1+ MOST-POSITIVE-FIXNUM) answers.
5006 ** The addition of a method with invalid qualifiers to a generic
5007 function does not cause an error to be signalled immediately;
5008 a warning is signalled, and the error is generated only on
5009 calling the generic function.
5010 * changed .fasl file version number, in part to add type codes for
5011 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5012 obscure ANSI requirements
5014 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5015 * fixed bug 148: failure to inline-expand a local function left
5016 garbage, confusing the compiler.
5017 * fixed bugs 3cd: structure slot readers perform type check if the
5018 slot can have an invalid value (i.e. it is either not initialized
5019 or can be written with a less specific slot writer).
5020 * bug fix: the compiler now traps array references to elements off
5021 the end of an array; previously, the bounds checking in some
5022 circumstances could go off-by-one.
5023 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5025 * type declarations for array element types now obey the description
5026 on the CLHS page "Declaration TYPE", as per discussions on
5027 sbcl-help around 2003-05-08. This means that a declaration
5028 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5029 declaration, all references to BAR will be asserted or assumed
5030 (with THE, so dependent on compiler policy) to involve objects of
5031 type FOO. Note that no such declaration is implied in
5032 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5033 * declared types of functions from the "Conditions"
5034 chapter. (reported by Paul Dietz)
5035 * bug fix: CERROR accepts a function as its first argument.
5036 * bug fix: NTH an NTHCDR accept a bignum as index
5037 arguments. (reported by Adam Warner)
5038 * optimization: character compare routines now optimize comparing
5039 against a constant character. (reported by Gilbert Baumann)
5040 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5041 argument now works properly on the MIPS platform.
5042 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5043 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5044 declared to have a functional type, does not cause an error
5046 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5047 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5048 * fixed bug: if last continuation of a deleted block has a
5049 destination, this destination should be deleted too. (reported by
5051 * fixed a bug in the bootstrap process: the host compiler's values
5052 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5053 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5054 test case from Patrik Nordebo)
5055 * improved the ability of the disassembler on the PPC platform to
5056 provide helpful disassembly notes.
5057 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5058 the class in more cases than previously.
5059 * bug fix: FILE-POSITION now understands :START and :END for
5060 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5061 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5062 8) data. (thanks to David Lichteblau)
5063 * bug fix: it is possible to add a method to a generic function
5064 without lambda list.
5065 * bug fix: reader failed to signal END-OF-FILE inside an
5066 object representation. (reported by Nikodemus Siivola)
5067 * fixed some bugs revealed by Paul Dietz' test suite:
5068 ** LAST and [N]BUTLAST should accept a bignum.
5069 ** condition slot accessors are methods.
5070 ** (VECTOR NIL) is a subtype of STRING.
5072 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5073 * minor incompatible change: some nonsensical specialized lambda
5074 lists (used in DEFMETHOD) which were previously ignored now signal
5076 * minor incompatible change: the system is now aware of the types of
5077 variables in the COMMON-LISP package, and will signal errors for
5078 most violations of these type constraints (where previously they
5079 were silently accepted).
5080 * minor incompatible change: COMPILE-FILE now uses the freedom
5081 afforded (ANSI 3.2.2.3) to use derived function types for
5082 functions defined in the same file. This also permits the system
5083 to warn on static type mismatches and function
5084 redefinition. (Currently it does not work with high DEBUG level.)
5085 * minor incompatible change: VALUES declaration is disabled.
5086 * When issuing notes, the compiler now signals a condition of type
5087 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5088 restart for use in user handlers. It is expected that the
5089 COMPILER-NOTE condition will eventually become a condition
5090 supertype to a hierarchy of note types, which will then be
5091 handleable in a similar fashion. However, at the moment, no such
5092 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5093 but it's an implementation detail, not a classification for the
5095 * Changes in type checking closed the following bugs:
5096 ** type checking of unused values (192b, 194d, 203);
5097 ** template selection based on unsafe type assertions (192c, 236);
5098 ** type checking in branches (194bc).
5099 * A short form of VALUES type specifier has ANSI meaning (it has
5100 increased the number of situations when SBCL cannot perform type
5102 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5103 keywords or constants is permissible.
5104 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5105 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5106 classes. (thanks to Antonio Martinez)
5107 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5108 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5109 argument to a pretty-print stream. Instead, it leaves any such
5110 operations to DESCRIBE-OBJECT methods.
5111 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5113 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5114 lambda lists. (thanks to David Lichteblau)
5115 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5116 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5117 (thanks to Gerd Moellmann)
5118 * fixed bug 246: increased compilation speed of long
5119 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5121 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5123 * DEFCONSTANT now throws a condition of type
5124 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5125 constant to a non-EQL value; CONTINUE and ABORT restarts
5126 respectively change and preserve the value.
5127 * fixed bug 63: The code walker, part of the implementation of CLOS,
5128 is now better at handling symbol macros.
5129 * bug fix: There is no longer an internal implementation type named
5130 CL:LENGTH. (reported by Raymond Toy)
5131 * bug fix: In macro-like defining macros/special operators the
5132 implicit block does not enclose the lambda list.
5133 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5134 enclosed in parentheses) are not suitable as type specifiers, and
5135 their use properly signals an error now.
5136 * bug fix: An argument count mismatch for a type specifier in code
5137 being compiled no longer causes an unhandled error at compile
5138 time, but signals a compile-time warning.
5139 * fixed simple vector readable printing
5140 * bug fix: DESCRIBE takes more care over whether the class
5141 precedence list slot of a class is bound before accessing it.
5142 (reported by Markus Krummenacker)
5143 * bug fix: FORMATTER can successfully compile pretty-printer format
5144 strings which use variants of the ~* directive inside.
5145 * bug fix: SEARCH now applies its TEST predicate to the elements of
5146 the arguments in the correct order. (thanks to Wolfhard Buss)
5147 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5148 in type inference. (thanks to Robert E. Brown)
5149 * bug fix: Reading in symbols with an explicit package name of ""
5150 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5151 * fixed some bugs revealed by Paul Dietz' test suite:
5152 ** NIL is now allowed as a structure slot name.
5153 ** Arbitrary numbers, not just REALs, are allowed in certain
5154 circumstances in LOOP for-as-arithmetic clauses.
5155 ** Multiple class redefinitions before slot access no longer
5156 causes a type error.
5157 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5158 association between the name and a class.
5159 ** Generic functions with non-standard method-combination and over
5160 five methods all of which return constants no longer return NIL
5161 after the first few invocations. (thanks to Gerd Moellmann)
5162 ** CALL-NEXT-METHOD with no arguments now passes the original
5163 values of the arguments, even in the presence of assignment.
5164 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5166 ** DISASSEMBLE works with closures and funcallable instances.
5167 ** ADD-METHOD now returns the generic function, not the new method.
5168 ** FIND-METHOD signals an error if the lengths of the specializers
5169 is incompatible with the generic function, even if the ERRORP
5171 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5172 which its argument is a member.
5173 ** DEFCLASS only redefines the class named by its class-name
5174 argument if that name is the proper name of the class;
5175 otherwise, it creates a new class.
5176 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5177 of the UNBOUND-SLOT condition to the name of the slot.
5178 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5179 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5180 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5181 SLOT-MAKUNBOUND in the specified fashion.
5183 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5184 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5185 cross-compilation host. As a consequence, we can now bootstrap our
5186 way up to SBCL starting with a bare gcc toolchain and human-readable
5187 source code (first the source to CLISP, then the source to SBCL).
5188 * A contributed module containing a partial implementation of the
5189 simple-streams interface has been included. (thanks to Rudi
5191 * A contributed module implementing the RFC1321 Message Digest
5192 Algorithm, known as MD5, has been included.
5193 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5194 no longer has any effect, as the code controlled by this feature
5195 has been deleted. (As far as we know, no-one has ever built using
5196 this feature, and its semantics were confused in any case).
5197 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5198 work on conditions (as required by the ANSI specification),
5199 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5200 expected behaviour on conditions. Users should note, however,
5201 that such behaviour is not required by the ANSI specification,
5202 and so use of this behaviour may render their code unportable.
5203 * fixed some bugs revealed by Paul Dietz' test suite:
5204 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5206 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5207 ** SXHASH on condition objects no longer returns NIL.
5208 ** :ALLOCATION :CLASS slots are better treated; their values are
5209 updated on class redefinition, and initforms inherited from
5210 superclasses are applied.
5211 ** REMOVE-METHOD returns its generic function argument even when
5212 no method was removed.
5213 ** SHARED-INITIALIZE now initializes the values of the requested
5214 slots, including those with :ALLOCATION :CLASS.
5215 ** ALLOCATE-INSTANCE now works on structure classes defined via
5216 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5218 ** SLOT-EXISTS-P now works on conditions, as well as structures
5220 ** MAKE-LOAD-FORM now has the required methods on
5221 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5222 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5223 keyword, and now implements the SLOT-NAMES argument.
5224 ** methods with &OPTIONAL arguments no longer allow too many
5225 arguments to be passed in the call without error.
5226 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5227 option is consistent with the required arguments of the generic
5228 function lambda list.
5229 * bug fix: REQUIRE accepts a string designator. (Thanks to
5231 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5232 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5233 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5234 * bug fix: The compiler now checks for duplicated variables in macro
5236 * bug fix: SETQ on globals returns the correct value.
5237 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5238 not a COMPILER-ERROR (followed by some other strange error on
5239 choosing the CONTINUE restart).
5240 * bug fix: make.sh and friends are now more consistent in the way that
5241 they look for GNU "make".
5243 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5244 * experimental native threads support (on x86 Linux >=2.4 only).
5245 This is not compiled in by default: you need to add :SB-THREAD to
5246 the target features. See the "Beyond ANSI" chapter of the manual
5248 * fix for longstanding nonANSIism: The old distinction between
5249 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5250 The return value from CL:FIND-CLASS is now a CLOS class, and
5251 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5252 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5253 * An interface to the MetaObject Protocol, as described in Kiczales,
5254 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5255 MIT Press, 1991, is available from the SB-MOP package.
5256 * incompatible change: the SB-PCL package should now be considered
5257 a private implementation detail, and no longer a semi-private MOP
5259 * minor incompatible change: due to rearrangement for threads, the
5260 control stack and binding stack are now allocated at arbitrary
5261 addresses instead of being hardcoded per-port. Users affected by
5262 this probably have to be doing advanced things with shared
5263 libraries, and will know who they are.
5264 * minor incompatible change: Previously, all --eval forms used were
5265 processed with READ before any of them were processed with EVAL.
5266 Now each --eval form is processed with both READ and EVAL before
5267 the next --eval form is processed. (Thus package operations like
5268 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5269 work as the user might reasonably expect.)
5270 * minor incompatible change: *STANDARD-INPUT* is now only an
5271 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5273 * minor incompatible change: Y-OR-N-P is now character-oriented,
5274 not line oriented. Also, YES-OR-NO-P now works without errors.
5275 (thanks to Antonio Martinez)
5276 * sb-aclrepl module improvements: an integrated inspector, added
5277 repl features, and a bug fix to :trace command.
5278 * Known functions, which cannot be open coded by the backend, are
5279 considered to be able to check types of their arguments. (fixing
5280 a bug report by Nathan J. Froyd)
5281 * fixed a bug in computing method discriminating functions: It is
5282 now possible to define methods specialized on classes which have
5283 forward-referenced superclasses. (thanks to Gerd Moellmann)
5284 * fixed evaluation order in optional entries (reported by Gilbert
5286 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5287 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5288 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5289 required-by-AMOP NAME argument, as well as CLASS and
5290 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5291 * fixed bug 20: DEFMETHOD can define methods using names that are
5292 not the proper names of classes to designate class specializers.
5293 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5294 Unix file descriptors, instead of blowing up. (thanks to Antonio
5296 * Garbage collection refactoring: user-visible change is that a
5297 call to the GC function during WITHOUT-GCING will not do garbage
5298 collection until the end of the WITHOUT-GCING. If you were doing
5299 this you were probably losing anyway.
5300 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5301 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5302 TYPEP the latter but not the former.
5303 * The compiler issues a full WARNING for calls to undefined functions
5304 with names from the CL package.
5305 * MAP-INTO for a vector destination is open coded. (reported by
5306 Brian Downing on c.l.l)
5307 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5308 documentation string.
5309 * fixed some bugs revealed by Paul Dietz' test suite:
5310 ** COPY-ALIST now signals an error if its argument is a dotted
5312 ** Condition slots are now accessed more correctly in the presence
5313 of multiple initargs for a given slot.
5314 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5315 exclude restarts of the same name associated with a different
5317 ** DEFCLASS of forward-referenced classes with another
5318 forward-referenced class in the superclasses list no longer
5320 ** Condition slots are now initialized once each, not multiple
5321 times. (thanks to Gerd Moellmann)
5322 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5324 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5325 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5326 arguments contain duplicated elements.
5327 ** RESTART-CASE understands local macros.
5328 ** RESTART-CASE associates exactly its own restarts with a condition.
5329 ** ENDP in safe mode checks its argument to be of type LIST.
5330 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5331 in question is unbound.
5332 ** Optimized MAKE-INSTANCE functions no longer cause internal
5333 assertion failures in the presence of duplicate initargs.
5334 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5335 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5336 propagated even in the ctor optimized implementation of
5338 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5340 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5341 * a better implementation of SXHASH on (simple) bit vectors,
5342 measured both in execution speed and in distribution of results
5343 over the positive fixnums, has been installed. Likewise, a better
5344 implementation of EQUAL for simple bit vectors is now available.
5345 * fixed CEILING optimization for a divisor of form 2^k.
5346 * fixed bug 240 (emitting extra style warnings "using the lexical
5347 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5348 by Antonio Martinez)
5349 * fixed SXHASH, giving different results for NIL depending on type
5350 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5351 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5352 variable. (found by Rolf Wester)
5353 * SBCL does not ignore type declarations for special
5354 variables. (reported by rif on c.l.l 2003-03-05)
5355 * some bug fixes in contrib/sb-aclrepl/
5356 * fixed some bugs revealed by Paul Dietz' test suite:
5357 ** a bug in the CONS type specifier, whereby the CAR and CDR
5358 types got intertwined, has been fixed;
5359 ** the type system is now able to reason about the interaction
5360 between INTEGER and RATIO types more completely;
5361 ** APPEND, [N]REVERSE and NRECONC check that those their
5362 arguments, which must be proper lists, are really so;
5363 ** An array specialized to be unable to hold elements has been
5364 implemented, as required -- yes, really -- by ANSI;
5365 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5366 on malformed property lists;
5368 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5369 * incompatible packaging change: in line with Unix convention,
5370 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5371 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5372 * REQUIRE and PROVIDE are now optionally capable of doing something
5373 useful. See the documentation string for REQUIRE.
5374 * infrastructure for a managed SBCL contrib system: contributed
5375 modules in this release include:
5376 ** the ASDF system definition facility;
5377 ** an interface to the BSD Sockets API;
5378 ** an ACL-like convenience interface to the repl;
5379 (thanks to Kevin Rosenberg)
5380 ** an implementation of ROTATE-BYTE, with efficient implementation
5382 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5383 gives a closer approximation to the right answer than previously.
5384 (thanks to Raymond Toy)
5385 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5386 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5387 optional environment arguments, as required by ANSI.
5388 * fixed bugs in other functions taking environment objects, allowing
5389 calls with an explicit NIL environment argument to be compiled
5391 * fixed bug 228: primary return values from
5392 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5393 COMPILE or FUNCTION.
5394 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5395 :TYPE will no longer signal errors on innocuous objects.
5396 * fixed bug 231b: SETQ is better at respecting type declarations in
5397 the lexical environment.
5398 * fixed a bug in DEFCLASS: classes named by symbols with no or
5399 unprintable packages can now be defined.
5400 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5401 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5402 * fixed compiler failure related to checking types of functions.
5403 (reported by Robert E. Brown)
5404 * the compiler is now much more consistent in its error-checking
5405 treatment of bounding index arguments to sequence functions: in
5406 (SAFETY 3) code, errors will be signalled in almost all cases if
5407 invalid sequence bounding indices are passed to functions defined
5408 by ANSI to operate on sequences.
5409 * fixed a bug in the build procedure: documentation of SBCL-specific
5410 packages is now preserved and available in the final Lisp image.
5411 * lifted FDEFINITION lookup out of loops in the implementation of
5412 many list operations. (thanks to Robert E. Brown)
5413 * fixed a bug in the reader: the #n# reader macro now works for
5414 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5415 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5416 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5417 E. Brown and Tony Martinez respectively)
5418 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5419 SLOT-BOUNDP: in particular, it is now able to optimize them much
5420 better, and is now not vulnerable to having packages renamed.
5421 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5422 always called when a slot is not present in an instance. (thanks
5424 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5425 longer signal an error on unreading a character following EOF on
5426 the previous constituent stream. (thanks to Tony Martinez)
5427 * fixed some bugs revealed by Paul Dietz' test suite:
5428 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5429 not just nonnegative fixnums;
5430 ** the logical bit-array operators such as BIT-AND now accept an
5431 explicit NIL for their "opt-arg" argument (to indicate a
5432 freshly-consed result bit-array);
5433 ** ELT now signals an error on an invalid sequence index in safe
5435 ** the type system is now cleverer about negations of numeric
5436 types, and consequently understands the BIGNUM and RATIO types
5438 ** the type system is now cleverer about the interaction between
5439 INTEGER and RATIO types: while bugs still remain, many more
5440 cases are accurately computed;
5441 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5442 if it is in the last clause;
5443 ** CONSTANTLY now correctly returns a side-effect-free function in
5445 ** DECLARE is no longer treated as a special-operator; in
5446 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5447 * incremented fasl file version number due to the change in the
5448 DEFSTRUCT-SLOT-DESCRIPTION structure.
5450 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5451 * minor incompatible change: code processed by the "interpreter" or
5452 EVAL now has a compilation optimization policy of (DEBUG 2)
5453 (changed from (DEBUG 1)) to improve debuggability of interactive
5454 development, and to allow the use of the debug RETURN command in
5456 * an experimental implementation of the RETURN command for the
5457 debugger has been included. (thanks to Frederik Kuivinen)
5458 * fixed bug 62: constraints were not propagated into a loop.
5459 * fixed bug in embedded calls of SORT (reported and investigated by
5461 * fixed some bugs revealed by Paul Dietz' test suite:
5462 ** printing and reading of arrays with some dimensions having
5463 length 0 (thanks to Gerd Moellmann);
5464 ** BOA constructor with &AUX argument without a default value does
5465 not cause a type error;
5466 ** CONSTANTP now returns true for all self-evaluating objects.
5468 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5469 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5470 accessors that are related by inheritance, as specified in the
5471 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5472 Valtteri Vuorikoski)
5473 * The compiler is now able to inline functions that were defined in
5474 a complex lexical environment (e.g. inside a MACROLET).
5475 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5477 * Support for the upcoming FreeBSD-5.0 release has been included.
5478 (thanks to Dag-Erling Smorgrav)
5479 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5480 effect when it is not in a toplevel context.
5481 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5482 stand a better chance of being correct. (thanks to Gerd
5484 * fixed bug in COERCE, which now signals an error on coercing a
5485 rational to a bounded real type which excludes the expected
5487 * The compiler is now able to derive types more accurately from the
5488 COERCE and COMPILE functions.
5489 * fixed bug 223: functional binding is considered to be constant
5490 only for symbols in the CL package.
5491 * fixed bug 231: SETQ did not check the type of a variable being set
5492 (reported by Robert E. Brown)
5493 * A new optimization for MAKE-INSTANCE has been included, fixing
5494 various bugs (including relating to :ALLOCATION :CLASS slots and
5495 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5497 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5498 ** As required by ANSI, LOOP now disallows anonymous collection
5499 clauses such as COLLECT I in conjunction with aggregate boolean
5500 clauses such as THEREIS (= I 1);
5501 ** LOOP now signals an error when any variable is reused in the
5502 same loop (including the potentially useful construct analogous
5503 to WITH A = 1 WITH A = (1+ A);
5504 ** IT is only a special loop symbol within the first clause of a
5505 conditional loop clause;
5506 ** LOOP with a typed iteration variable over a hashtable now
5507 signals a type error iff it should.
5508 * fixed some other bugs revealed by Paul Dietz' test suite:
5509 ** FILE-STREAM now names the class previously known as FD-STREAM;
5510 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5511 argument) no longer signals an error;
5512 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5513 of the slot symbol, rather than using the current package
5514 ((:CONC-NAME "") continues to intern the slot's name in the
5516 * incremented fasl file version number, because of the incompatible
5517 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5518 of the new implementation of DEFINE-COMPILER-MACRO.
5520 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5521 * Support for building SBCL for MIPS platforms running in
5522 little-endian mode has now been checked in, and basic
5523 functionality on said platforms verified.
5524 * minor incompatible change: PCL now records the pathname of a file
5525 in which methods and the like are defined, rather than its
5527 * minor incompatible change: TRUENAME now considers the truename of
5528 a file naming a directory to be the pathname with :DIRECTORY
5529 component indicating that directory.
5530 * minor incompatible change: a NAMED clause in the extended form of
5531 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5532 reason for the previous behaviour is unclear.
5533 * more systematization and improvement of CLOS and MOP conformance
5534 in PCL (thanks to Gerd Moellman and Pierre Mai):
5535 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5537 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5538 primary methods with no specializers;
5539 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5541 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5542 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5543 FORWARD-REFERENCED-CLASSes; error reporting on
5544 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5546 ** SXHASH on CLOS instances now uses a slot internal to the
5547 instance to return different numbers on distinct instances,
5548 while preserving the same return value through invocations of
5550 ** DEFMETHOD signals errors when methods with longer incongruent
5551 lambda lists are added to generic functions;
5552 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5553 CLASS, as specified in AMOP;
5554 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5555 on the order returned by the primary method for classes of
5556 class STANDARD-CLASS;
5557 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5558 * fixed some bugs shown by Paul Dietz' test suite:
5559 ** DOLIST puts its body in TAGBODY;
5560 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5562 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5563 value producing form;
5564 ** if more variables are given to PROGV than values, extra
5565 variables are bound and made to have no value;
5566 ** NSUBSTITUTE on list arguments gets the right answer with
5568 ** ELT signals an error of type TYPE-ERROR when the index argument
5569 is not a valid sequence index;
5570 ** LOOP signals (at macroexpansion time) an error of type
5571 PROGRAM-ERROR when duplicate variable names are found;
5572 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5573 ** FUNCALL of special-operators now cause an error of type
5575 ** PSETQ now works as required in the presence of side-effecting
5576 symbol-macro places;
5577 ** NCONC accepts any object as its last argument;
5578 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5580 ** loop-for-as-package does not require a package to be explicitely
5582 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5584 * fixed bug 166: compiler preserves "there is a way to go"
5585 invariant when deleting code.
5586 * fixed bug 172: macro lambda lists with required arguments after
5587 &REST arguments now cause an error to be signalled. (thanks to
5589 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5590 bug. (thanks to Matthew Danish)
5591 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5593 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5594 arguments are lexically rebound. (thanks to Gerd Moellmann and
5596 * fixed bug 194: error messages are now more informative when there
5597 is no primary method applicable in a call to a generic
5598 function. (thanks to Gerd Moellmann)
5599 * fixed bug in command line argument checking (thanks to Julian
5601 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5602 (thanks to Matthew Danish)
5603 * incremented fasl file version number, because of the
5604 SXHASH-related changes in the layout of CLOS data structures
5606 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5607 * minor incompatible change: The runtime (the Unix executable named
5608 "sbcl") is now much pickier about the .core files it will load.
5609 Essentially it now requires .core files to descend from the same
5610 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5611 as the runtime does. (The intent is to prevent the crashes which
5612 can occur, and which can even be reported as mysterious failures,
5613 when people patch the sources or change the build parameters
5614 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5615 sbcl and .core files.)
5616 * fixed bug: VALUES-LIST is no longer optimized away.
5617 * fixed bug 142: The FFI conversion of C string values to Lisp
5618 string values no longer conses excessively. (thanks to Nathan
5619 Froyd porting Raymond Toy's fix to CMU CL)
5620 * began to systematize and improve MOP conformance in PCL (thanks to
5621 Nathan Froyd, Gerd Moellman and Pierre Mai):
5622 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5624 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5625 ** FINALIZE-INHERITANCE is now called on class finalization;
5626 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5627 argument precedence order.
5628 * fixed bug 202: The compiler no longer fails on functions whose
5629 derived types contradict their declared type.
5630 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5631 so it can be non-toplevel.
5632 * The fasl file version number has changed (because of the new
5633 implementation of DEFMACRO).
5634 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5635 safe code, that any length requirement by their type-specifier
5636 argument is valid. The exceptions to this are described in bug
5638 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5639 functions now check the types of their inputs as required by ANSI.
5640 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5641 introduced symbol is DECLAREd to be SPECIAL.
5642 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5643 * fixed bug: :COUNT argument to sequence functions may be negative
5644 * fixed bug: body of DO-SYMBOLS may contain declarations
5645 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5646 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5647 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5648 symbol macro only once
5649 * fixed printing of call frame when argument list is unavailable
5650 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5651 * compiler no longer signals WARNING on unknown keyword
5654 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5655 * A beta-quality port to the mips architecture running Linux,
5656 based on the old CMUCL backend, has been made. It has been tested
5657 on a big-endian kernel, and works sufficiently well to be able to
5658 rebuild itself; it has not been tested in little-endian mode.
5659 * fixed an inconsistency between gencgc.c and purify.c which made
5660 dumping/loading .core files unreliable
5661 * fixed bug 120a: The compiler now deals correctly with IFs where
5662 the consequent is the same as the alternative, instead of
5663 misderiving the return type. (thanks to Alexey Dejneka)
5664 * fixed bug 113: Logical pathnames are now dumpable (the logical
5665 host is resolved at load-time, throwing an error if it is not
5667 * fixed bug 174: FORMAT's error message is slightly clearer when a
5668 non-printing character is used in a format directive.
5669 * fixed several bugs in compiler checking of type declarations, i.e.
5670 violations of the Python "declarations are assertions" principle
5671 (thanks to Alexey Dejneka)
5672 * fixed several bugs in PCL's error checking (thanks to Gerd
5674 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5676 * fixed bug in compilation of functions as first class values
5677 (thanks to Antonio Martinez-Shotton)
5678 * The compiler's handling TYPE-ERRORs which it can prove will
5679 inevitably happen at runtime has been cleaned up and corrected
5680 in several ways. (thanks to Alexey Dejneka)
5681 * improved argument type checking for various basic arithmetic
5682 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5683 lavished on them in the past that they can be compiled in many
5684 ways in different special cases
5685 * fixed bug 181: compiler checks validity of user supplied type
5687 * cleaned up code flushing in optimization: Function calls which
5688 should signal errors for safety purposes (e.g. which ANSI says
5689 should signal errors when their arguments are of incorrect type)
5690 are no longer optimized away.
5691 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5692 * incremented fasl file version number, because changes in the
5693 implementation of sequence functions like COERCE caused
5694 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5695 in old inline expansions) to become undefined. (Actually these
5696 changes were later undone, so we might very well be binary
5697 compatible with 0.7.7 after all, but leaving the version number
5698 incremented seemed like the simplest and most conservative
5701 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5702 * An alpha-quality port to the parisc architecture running Linux,
5703 based on the old CMUCL backend, has been made. This, even more so
5704 than the other backends, should be considered still a work in
5705 progress; known problems include that the Linux kernel in 64-bit
5706 mode does not propagate the correct sigcontext structure to
5707 userspace, and consequently SBCL on a parisc64 kernel will not
5709 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5710 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5711 suppressed.) Also now that the compiler is looking at declarations
5712 in the environment, it checks optimization declarations as well,
5713 and suppresses inlining when (> DEBUG SPEED).
5714 * More fixes have been made to treatment of floating point exception
5715 treatment and other Unix signals. In particular, floating point
5716 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5717 * The detection and handling of control stack exhaustion (infinite
5718 or very deeply nested recursion) has changed. Stack exhaustion
5719 detection is now done by write-protecting pages at the OS level
5720 and applies at all optimization settings; when found, a
5721 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5722 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5723 be caught using IGNORE-ERRORS.
5724 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5725 correctly when transforming recursive LABELS functions to LETs.
5726 (thanks to Alexey Dejneka)
5727 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5728 that are names of constants or global variables.
5729 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5730 alien routines with docstrings.
5731 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5732 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5734 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5735 (thanks to Eric Marsden)
5736 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5737 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5738 * Bug fix: The SPARC backend can now compile functions involving
5739 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5740 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5741 to a functions expecting a PATHNAME-DESIGNATOR.
5742 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5743 lambda lists. (thanks to Alexey Dejneka)
5744 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5745 functions so that EXPORTing the name of the class doesn't cause
5746 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5747 to Antonio Martinez for reporting this)
5748 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5749 constant-folded without failing an assertion. (thanks to Einar
5750 Floystad Dorum for reporting this)
5751 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5752 types are now dealt with more correctly by the compiler.
5753 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5754 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5755 behaviour analogous to RENAME-FILE. This puts its behaviour more
5756 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5758 * The fasl file version number has changed again. (because of the
5759 bug fix involving the names of PCL MAKE-INSTANCE functions)
5761 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5762 * bug fix: Floating point exceptions are treated much more
5763 consistently on the x86/Linux and PPC/Linux platforms.
5764 * Array initialization with :INITIAL-ELEMENT is now much faster for
5765 cases when the compiler cannot open code the array creation, but
5766 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5767 array accesses have also seen a speed increase.
5768 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5769 specified. (This was at the root of some bad interactions between
5770 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5772 * bug fix: Internal error arguments for undefined functions are now
5773 computed correctly on the PPC/Linux platform.
5774 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5775 Raymond Toy's patch for CMU CL)
5776 * Support for the Solaris 9 operating environment has been included
5777 (thanks to Daniel Merritt)
5778 * A very ugly but hopefully complete draft of the missing FFI chapter
5779 of the manual has been created by reformatting the corresponding
5780 CMU CL manual chapter into (currently very ugly and incoherent)
5781 DocBook and bringing it up to date for SBCL behavior. Thus, the
5782 manual is now essentially complete, at least by my extreme
5783 once-and-only-once standards, whereby it's acceptable to refer to
5784 the doc strings of SB-EXT functions as the primary documentation.
5785 * The fasl file version number has changed again, due to cleanup of
5786 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5787 is no longer a static symbol.)
5789 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5790 * SBCL now builds with OpenMCL (version 0.12) as the
5791 cross-compilation host; also, more progress has been made toward
5792 bootstrapping under CLISP.
5793 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5795 * bug 158 fixed: The compiler can now deal with integer loop
5796 increments different from 1; fixing this turned out also to fix
5798 * bug 169 fixed: no more bogus warnings about using lexical bindings
5799 despite the presence of perfectly good SPECIAL declarations (thanks
5800 to David Lichteblau)
5801 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5802 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5803 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5805 * bug 180 fixed: Method combination specifications no longer ignore
5806 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5807 * bug fix: Structure type predicate functions now check their argument
5808 count as they should.
5809 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5810 correctly. (thanks to Pierre Mai)
5811 * minor incompatible change: The --noprogrammer option is deprecated
5812 in favor of the new --disable-debugger option, which is very similar.
5813 (The major difference is that it takes effect at a slightly different
5814 time at startup, causing handling of errors in --sysinit and
5815 --userinit files will be affected differently.) The
5816 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5817 been added to allow this functionality to be controlled from ordinary
5818 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5819 maintainers, who might want to run non-interactive scripts to
5820 build SBCL cores which will later be used interactively.)
5821 * minor incompatible change: The LOAD function no longer, when given
5822 a wild pathname to load, loads all files matching that pathname.
5823 Instead, an error of type FILE-ERROR is signalled.
5825 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5826 * bug 147 fixed: The compiler preserves its block link/count
5827 invariants more correctly now so that it doesn't crash. (thanks
5829 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5831 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5832 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5833 no-value-for-this-character as NIL (as specified by ANSI).
5834 * HOST-NAMESTRING on physical pathnames now returns a string that is
5835 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5836 (thanks to Christophe Rhodes)
5837 * The Alpha port handles icache flushing more correctly. (thanks to
5839 * More progress has been made toward bootstrapping under CLISP. (thanks
5840 to Christophe Rhodes)
5841 * The fasl file format has changed again, because dynamic loading
5842 on OpenBSD (which has non-ELF object files) motivated some cleanups
5843 in the way that foreign symbols are transformed and passed around.
5844 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5845 is no longer treated as whitespace by the reader, but instead as
5846 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5847 |A
\7fB|, instead of A as it used to.
5849 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5850 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5851 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5852 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5853 this as of 0.7.1.45, but was left out of the previous news section
5854 (thanks to Dan Barlow)
5855 * SBCL now runs on the Solaris operating system on SPARC architectures
5856 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5857 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5858 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5859 * SPARC backend cleanups, allowing builds of cores optimized for V8
5860 and V9 SPARCS, and also emission of code targeted to a particular
5861 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5863 * SBCL is closer to bootstrapping under CLISP, thanks to various
5864 fixes by Christophe Rhodes.
5865 * The fasl file format has changed again, to allow the compiler's
5866 INFO database to support symbol macros.
5867 * The user manual (in doc/) is formatted into HTML more nicely.
5868 (thanks to coreythomas)
5869 * The system is smarter about SUBTYPEP relationships, especially
5870 those involving NOT types (including types such as ATOM which are
5871 represented internally using NOT types). Thus SUBTYPEP is less
5872 likely to return (VALUES NIL NIL) in general, and in particular
5873 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5875 * The fasl file format has changed again, because the internal
5876 representation of types now includes a new slot to support the new
5877 SUBTYPEP-of-NOT-types logic.
5878 * (not a change in the main branch of SBCL, but a related prototype
5879 which can hopefully be merged into the main branch of SBCL in the
5880 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5881 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5882 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5883 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5884 dispatch macro character combinations. (thanks to Alexey Dejneka)
5885 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5886 that superficially look like logical namestrings correctly.
5887 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5889 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5890 default supplied-p) for &optional and &key arguments. (thanks to
5893 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5894 * incompatible change: The compiler is now less aggressive about
5895 tail call optimization, doing it only when (> SPACE DEBUG) or
5896 (> SPEED DEBUG). (This is an incompatible change because there are
5897 programs which relied on the old CMU-CL-style behavior to optimize
5898 away their unbounded recursion which will now die of stack overflow.)
5899 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5900 for non-GENCGC systems has been increased to 20M (since that
5901 seems much closer to the likely performance optimum for modern
5902 systems than the old 4M value was)
5903 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5904 and *DEBUG-PRINT-LEVEL*
5905 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5906 of CMU CL's support for SPARC, and various endianness and other
5907 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5908 * new syntactic sugar for the Unix command line: --load foo.bar is now
5909 an alternate notation for --eval '(load "foo.bar")'.
5911 ** The system now detects stack overflow and handles it gracefully,
5912 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5913 optimization settings. (This is a good thing in general, and
5914 its introduction in this version should be particularly timely
5915 for anyone whose code fails because of suppression of tail
5917 ** The system now hunts for the C variable "environ" in a more
5918 devious way, to avoid segfaults when the C library version differs
5919 between compile time and run time. (thanks to Christophe Rhodes)
5920 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5921 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5922 ** The compiler no longer issues bogus style warnings for undefined
5923 classes in the same source file as the DEFCLASSes which defined
5924 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5926 ** fixes in CONDITION class precedence list for undefined function
5927 errors (thanks to Alexei Dejneka)
5928 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5929 correctly. (thanks to Dan Barlow)
5930 ** portability fixes aiming at bootstrapping under CLISP (thanks
5931 to Dave McDonald and Christophe Rhodes)
5932 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5933 ** fixes in type translation and and type inference (thanks to
5935 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5936 ** various fixes in the new ports (thanks to Dan Barlow)
5937 * several changes related to debugging:
5938 ** suppression of tail recursion, as noted above
5939 ** stack overflow detection, as noted above
5940 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5941 is now the default. (For some time encapsulation has been more
5942 reliable than the breakpoint-based :ENCAPSULATE NIL
5943 implementation, at least on X86 systems; and I just noticed that
5944 encapsulation also seems closer to the spirit of the ANSI
5947 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5949 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5950 up properly again. (There was a packaging bug in 0.7.0 which
5951 left their definitions in SB-SYS::LOAD-FOREIGN and
5952 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5953 vital for most things which interface to C-level interfaces,
5954 like extensions working with sockets or databases or
5955 Perl-compatible regexes or whatever, and the need to fix
5956 this bug is the main reason that 0.7.1 was released so
5958 ** DEFGENERIC is now choosier about the methods it redefines, so that
5959 reLOADing a previously-LOADed file containing DEFGENERICs does
5960 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5961 cycle now works as it should. (thanks to Alexey Dejneka)
5962 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5963 fixed by Christophe Rhodes. (He actually submitted this patch
5964 months ago, and I delayed until after 0.7.0.)
5965 ** Bug 111 (internal compiler confusion about runtime checks on
5966 FUNCTION types) was fixed by Alexey Dejneka.
5967 * Some internal cleanups (getting rid of variables which aren't
5968 needed now that the byte interpreter is gone) caused the fasl
5969 file format number to change again.
5971 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5972 * major incompatible change: The default fasl file extension, i.e. the
5973 default extension for files produced by COMPILE-FILE, has changed
5974 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5976 ** There are many changes in the implementation of the compiler.
5977 SBCL is now essentially a compiler-only implementation of ANSI
5978 Common Lisp. EVAL still "interprets" a few special cases, but
5979 almost all the interesting cases are handled by creating
5980 a LAMBDA expression, calling COMPILE on it, then calling
5981 FUNCALL on the result.
5982 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5983 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5984 Since the code is newer, there might still be some new bugs
5985 (though not as many as before Martin Atzmueller's fixes:-). But
5986 the new code is substantially simpler and clearer, and hopefully
5987 any remaining bugs will be simpler, less fundamental, and more
5988 fixable then the bugs in the old code.
5989 ** The revised compiler is still a little unsteady on its feet.
5991 *** The debugging information it produces (particularly the names
5992 of FUNCTION objects) is sometimes much less useful than what
5993 the old compiler produced.
5994 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5995 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5996 within a MACROLET) has been temporarily weakened.
5997 ** There are new compiler optimizations for various functions:
5998 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5999 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6000 *** the math functions TRUNCATE, FLOOR, and CEILING
6001 *** the function-of-all-trades COERCE
6002 Mostly these should be transparent, but there's one
6003 potentially-annoying problem (bug 117): when the compiler
6004 inline-expands a function and does type analysis on the result,
6005 it can create control paths which have type mismatches, and
6006 when it can't prove that those control paths aren't taken,
6007 it will issue WARNINGs about the type mismatches. This is
6008 a particular problem in practice for the new sequence functions.
6009 It's not clear how this should be fixed, and for now, a
6010 workaround is given in the entry for 117 in the BUGS file.
6011 ** (Because of the interaction between the two previous items --
6012 occasional inlining problems and new inline expansions -- some
6013 of the new sequence function optimizations won't really kick in
6014 completely until debugging information, and then inlining, are
6015 straightened out in some future version.)
6016 * minor incompatible changes:
6017 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6018 DIRECTORY no longer implicitly promotes NIL slots of its
6019 pathname argument to :WILD. In particular, when you ask for the
6020 contents of a directory (which you used to be able to do without
6021 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6022 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6023 ** changes in behavior that ANSI explicitly defines to be
6024 implementation dependent:
6025 *** The new compiler-only implementation still conforms with ANSI,
6026 but acts a little different than before. Besides the obvious
6027 changes in performance tradeoffs (that the cost per form passed
6028 to EVAL has gone up, and the cost per form executed by EVAL
6029 has gone down), the behavior of the system changes a little
6030 because there are no longer any interpreted function objects.
6031 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6032 e.g. doing COMPILE on the output of interactive DEFUN is
6034 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6036 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6037 has changed from (:CL) to NIL.
6038 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6039 e.g. #\Newline and #\Tab, don't have names specified in the
6040 ANSI Common Lisp standard, is now based on their ASCII symbolic
6041 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6042 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6043 are no longer used for output.
6044 ** changes in internal implementation constants:
6045 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6046 4 million. (If your application spends a lot of time GCing and
6047 you have a lot of RAM, you might want to experiment with
6048 increasing it even more.)
6049 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6050 However, almost all old code should still continue to work without
6051 immediate update, as SB-C-CALL is now a (deprecated) nickname
6053 ** Old operator names in the style DEF-FOO are now deprecated in
6054 favor of new corresponding names DEFINE-FOO, for consistency with
6055 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6056 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6057 internal symbols, but a few supported extensions like
6058 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6059 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6060 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6061 etc. as you get deeper into recursive calls to the debugger
6062 command loop, instead of the old "5]", "5]]", "5]]]"
6063 sequence. (I was motivated to do this when squabbles between
6064 ILISP and SBCL left me very deeply nested in the debugger. In the
6065 short term, this change will probably provoke more ILISP/SBCL
6066 squabbles, but hopefully it will be an improvement in the long run.)
6067 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6068 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6069 function, since declaiming return types involving aliens is
6070 (1) annoyingly messy to do by hand and (2) vital to efficient
6071 compilation of code which calls such functions.
6072 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6073 longer reexported by the SB-EXT package. They're solely useful
6074 for alien code, so it seems more logical that you should get
6075 them from the SB-ALIEN package, not in SB-EXT.
6076 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6077 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6078 features. Instead, the code that they used to control is always
6079 built into the system.
6080 * many other bug fixes
6081 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6082 advantage of the new EVAL-WHEN stuff and to clean them up in
6083 general, and they are now more ANSI-compliant in a number of
6084 ways. Martin Atzmueller is responsible for a lot of this.
6085 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6087 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6088 *** correct ERROR type for various file operations
6089 *** some fixes for Lisp streams
6090 *** DEFMETHOD syntax checking
6091 *** changing old weird representation of debug information as
6092 strings (which, among their other deficiencies, don't transform
6093 correctly when you rename packages, and don't change their
6094 print representation when you change things like *PACKAGE*
6095 and *PRINT-LENGTH*) to symbols and lists of symbols
6096 He also made several improvements and fixed several bugs in DESCRIBE.
6097 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6099 *** misbehavior of WRITE-STRING/WRITE-LINE
6100 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6101 and several other LOOP problems as well
6102 *** DIRECTORY when similar filenames are present
6103 *** DEFGENERIC with :METHOD options
6104 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6105 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6106 *** argument ordering in FIND with :TEST option
6107 *** mishandled package designator argument in APROPOS-LIST
6108 *** various problems in the backquote readmacro
6109 *** a bug in APROPOS
6110 *** probably some others that I'm not describing very well here,
6111 since the CVS log documents them by reference to sbcl-devel
6112 messages, and the SourceForge archives aren't working well.:-(
6113 ** Dan Barlow improved the Alpha port (and is making progress on the
6114 PPC port, for those of you who think different).
6115 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6116 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6117 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6118 continues to work on the SPARC port (for those of you in a position
6119 to look down upon our little PC-compatible boxes from a great height).
6120 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6121 and uses that copy, rather than the current dynamic value, when
6122 it's trying to decide whether to truncate output. Thus e.g.
6123 (let ((*print-lines* 50))
6124 (pprint-logical-block (stream nil)
6126 (let ((*print-lines* 8))
6127 (print (aref possiblybigthings i) stream)))))
6128 should now truncate the logical block only at 50 lines, instead of
6129 often truncating it at 8 lines, as it did before.
6130 * The doc/cmucl/ directory, containing old CMU CL documentation
6131 from the time of the fork, is no longer part of the base system.
6132 SourceForge has shut down its anonymous FTP service, and with it
6133 my original plan for distributing the old CMU CL documentation
6134 there. For now, if you need these files you can download an old
6135 SBCL source release and extract them from it.
6136 * The fasl file version number changed again, for dozens of reasons,
6137 some of which are apparent above.
6139 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6140 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6141 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6142 patch, so that DISASSEMBLE output is much nicer.
6143 * The code in the SB-PROFILE package now seems reasonably stable.
6144 I still haven't decided what the final interface should look like
6145 (I'd like PROFILE to interact cleanly with TRACE, since both
6146 facilities use function encapsulation) but if you have a need
6147 for profiling now, you can probably use it successfully with
6148 the current CMU-CL-style interface.
6149 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6150 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6151 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6152 link now returns the dangling link itself, and for similar
6153 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6154 link itself. (In these cases the old code signalled an error and
6155 looped endlessly, respectively.) Thus, DIRECTORY now works even
6156 in the presence of dangling and cyclic symbolic links.
6157 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6158 is now a supported extension again, since the consensus on
6159 sbcl-devel was that it can be useful for ordinary development
6160 work, not just for debugging SBCL itself.
6161 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6162 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6163 that currently-defined functions might be redefined later with
6164 different return types.
6165 * Hash tables can be printed readably, as inspired by CMU CL code
6166 of Eric Marsden and SBCL code of Martin Atzmueller.
6167 * better error handling in CLOS method combination, thanks to
6168 Martin Atzmueller porting Pierre Mai's CMU CL patches
6169 * more overflow fixes for >16Mbyte I/O buffers
6170 * A bug in READ has been fixed, so that now a single Ctrl-D
6171 character suffices to cause end-of-file on character streams.
6172 In particular, now you only need one Ctrl-D at the command
6173 line (not two) to exit SBCL.
6174 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6176 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6177 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6178 does the right thing.
6179 * The implementation of some type tests, especially for CONDITION
6180 types, is now tidier and maybe faster, due to CMU CL code
6181 originally by Douglas Crosher, ported by Martin Atzmueller.
6182 * Some math functions have been fixed, and there are new
6183 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6184 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6185 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6186 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6187 likely to be built into sbcl-0.7.0.)
6188 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6189 CL, ported to SBCL by Martin Atzmueller)
6190 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6191 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6192 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6193 * There's a new slam.sh hack to shorten the edit/compile/debug
6194 cycle for low-level changes to SBCL itself, and a new
6195 :SB-AFTER-XC-CORE target feature to control the generation of
6196 the after-xc.core file needed by slam.sh.
6197 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6198 COMPILE-FILE is no longer supported, so that now every function
6199 gets an entry point, so that block compilation looks a little
6200 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6201 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6202 returns the number of bytes consed since the system started,
6203 rather than the number consed since the first time the function
6204 was called. (The new definition parallels ANSI functions like
6205 CL:GET-INTERNAL-RUN-TIME.)
6206 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6207 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6208 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6209 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6210 * Fasl file version numbers are now independent of the target CPU,
6211 since historically most system changes which required version
6212 number changes have affected all CPUs equally. Similarly,
6213 the byte fasl file version is now equal to the ordinary
6216 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6217 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6218 is no longer recognized. I apologize for this, because it was
6219 listed in SB-EXT as a supported extension, but I found that
6220 its existing behavior was poorly specified, as well as incorrectly
6221 specified, and it looked like too much of a mess to straighten it
6222 out. I have enough on my hands trying to get ANSI stuff to work..
6223 * many patches ported from CMU CL by Martin Atzmueller, with
6224 half a dozen bug fixes in pretty-printing and the debugger, and
6225 half a dozen others elsewhere
6226 * fixed bug 13: Floating point infinities are now supported again.
6227 They might still be a little bit flaky, but thanks to bug reports
6228 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6229 as flaky as they were.
6230 * The --noprogrammer command line option is now supported. (Its
6231 behavior is slightly different in detail from what the old man
6232 page claimed it would do, but it's still appropriate under the
6233 same circumstances that the man page talks about.)
6234 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6235 are now supported, and enabled by default. Thus, the compiler can
6236 handle many floating point and complex operations much less
6237 inefficiently. (Thus e.g. you can implement a complex FFT
6239 * The compiler now detects type mismatches between DECLAIM FTYPE
6240 and DEFUN better, and implements CHECK-TYPE more correctly, and
6241 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6242 thanks to patches from Martin Atzmueller.
6243 * various fixes to make the cross-compiler more portable to
6244 ANSI-conforming-but-different cross-compilation hosts (notably
6245 Lispworks for Windows, following bug reports from Arthur Lemmens)
6246 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6247 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6248 fixed thanks to Pierre Mai's CMU CL patches.
6249 * fixes to keep the system from overflowing internal counters when
6250 it tries to use i/o buffers larger than 16M bytes
6251 * fixed bug 45a: Various internal functions required to support
6252 complex special functions have been merged from CMU CL sources.
6253 (When I was first setting up SBCL, I misunderstood a compile-time
6254 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6255 * improved support for type intersection and union, fixing bug 12
6256 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6257 more obscure bugs as well
6258 * some steps toward byte-compiling non-performance-critical
6259 parts of the system, courtesy of patches from Martin Atzmueller
6260 * Christophe Rhodes has made some debian packages of sbcl at
6261 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6262 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6263 stable, but are nonetheless usable. When he's ready, I'd be happy
6264 to add them to the SourceForge "File Releases" section. (And if
6265 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6266 * new fasl file format version number (because of changes in
6267 internal representation of (OR ..) types to accommodate the new
6268 support for (AND ..) types, among other things)
6270 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6271 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6273 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6275 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6276 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6277 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6278 * DESCRIBE now works on structure objects again.
6279 * Most function call argument type mismatches are now handled as
6280 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6281 know whether the function will be redefined before the call is
6282 executed. (The compiler could flag local calls with full WARNINGs,
6283 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6284 it doesn't keep track of enough information to know whether calls
6285 are local in this sense.)
6286 * Compiler output is now more verbose, with messages truncated
6287 later than before. (There should be some supported way for users
6288 to override the default verbosity, but I haven't decided how to
6289 provide it yet, so this behavior is still controlled by the internal
6290 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6291 src/compiler/ir1util.lisp.)
6292 * Fasl file format version numbers have increased again, because
6293 support for the Gray streams extension changes the layout of the
6294 system's STREAM objects.
6295 * The Gray subclassable streams extension now works, thanks to a
6296 patch from Martin Atzmueller.
6297 * The full LOAD-FOREIGN extension (not just the primitive
6298 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6299 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6300 but like most other programs, it defaults to copying the Unix
6301 environment from the original process instead of starting the
6302 new process in an empty environment.
6303 * Extensions which manipulate the Unix environment now support
6304 an :ENVIRONMENT keyword option which doesn't smash case or
6305 do other bad things. The CMU-CL-style :ENV option is retained
6306 for porting convenience.
6307 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6308 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6310 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6312 * A patch from Martin Atzmueller seems to have solved the SIGINT
6313 problem, and as far as we know, signal-handling now works cleanly.
6314 (If you find any new bugs, please report them!)
6315 * The system no longer defaults Lisp source file names to types
6316 ".l", ".cl", or ".lsp", but only to ".lisp".
6317 * The compiler no longer uses special default file extensions for
6318 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6319 seems to expect a single default extension for all compiled code,
6320 and there's no compelling reason to try to stretch the standard
6321 to allow two different extensions.) Instead, byte-compiled files
6322 default to the same extension as native-compiled files.
6323 * Fasl file format version numbers have increased again, because
6324 a rearrangement of internal implementation packages made some
6325 dumped symbols in old fasl files unreadable in new cores.
6326 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6327 many fewer weird special cases.
6328 * Bug #17 (differing COMPILE-FILE behavior between logical and
6329 physical pathnames) has been fixed, and some related misbehavior too,
6330 thanks to a patch from Martin Atzmueller.
6331 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6332 by Tim Moore, ported to SBCL by Martin Atzmueller.
6333 * Martin Atzmueller fixed several filesystem-related problems,
6334 including bug #36, in part by porting CMU CL patches, which were
6335 written in part by Paul Werkowski.
6336 * More compiler warnings in src/runtime/ are gone, thanks to
6337 more patches from Martin Atzmueller.
6338 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6341 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6343 * DESCRIBE now works on CONDITION objects.
6344 * The debugger now handles errors which arise when trying to print
6345 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6347 * The build system now uses an additional file, customize-target-features.lisp,
6348 to allow local modifications to the target *FEATURES* list. (The point of
6349 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6350 debugging features enabled, without having to worry about propagating it
6351 into everyone's system when I do a "cvs update".) When no
6352 customize-target-features.lisp file exists, the target *FEATURES* list
6353 should be constructed the same way as before.
6354 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6355 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6356 warn about behavior which is undefined under the ANSI spec. Note: This
6357 is specified by ANSI, but it's not very popular with programmers.
6358 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6359 macro in the SBCL sources for an example of a workaround which you
6360 might use to make portable ANSI-standard code which does what you want.
6361 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6362 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6363 when it's used as a non-toplevel form. (This is required in order
6364 to implement the DEFCONSTANT-EQX macro.)
6365 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6366 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6367 funny things, due to bugs in the implementation of EVAL-WHEN
6368 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6369 non-toplevel DEFCONSTANTs are uncommon.)
6370 * The core file version number and fasl file version number have been
6371 incremented, because the old noncompliant DEFCONSTANT behavior involved
6372 calling functions which no longer exist, and because I also took the
6373 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6374 * fixed bug 1 (error handling before read-eval-print loop starts), and
6375 redid debugger restarts and related debugger commands somewhat while
6377 ** The QUIT debugger command is gone, since it did something
6378 rather different than the SB-EXT:QUIT command, and since it never
6379 worked properly outside the main toplevel read/eval/print loop.
6380 Invoking the new TOPLEVEL restart provides the same functionality.
6381 ** The GO debugger command is also gone, since you can just invoke
6382 the CONTINUE restart directly instead.
6383 ** The TOP debugger command is also gone, since it's redundant with the
6384 FRAME 0 command, and since it interfered with abbreviations for the
6386 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6388 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6389 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6390 some porting work by Martin Atzmueller)
6391 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6392 with a boatload of patches which he ported to SBCL. Now that those
6394 ** The system tries to make sure that its low-priority messages
6395 are prefixed by semicolons, to help people who like to use
6396 syntax highlighting in their ILISP buffer. (This patch
6397 was originally due to Raymond Toy.)
6398 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6399 patches originally written by Raymond Toy.
6400 ** The compiler understands coercion between single-value and
6401 multiple-VALUES type expressions better, getting rid of some very
6402 weird behavior, thanks to patches originally by Robert MacLachlan
6403 and Douglas Crosher.
6404 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6405 lambda lists, thanks to a patch originally by Pierre Mai.
6406 ** The system no longer bogusly warns about "abbreviated type
6408 ** The compiler gets less confused by inlining and RETURN-FROM,
6409 thanks to some patches originally by Tim Moore.
6410 ** The system no longer hangs when dumping circular lists to fasl
6411 files, thanks to a patch originally from Douglas Crosher.
6412 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6413 undefined function error.
6414 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6415 in structure slot initforms) for now, documented workaround instead:-|
6416 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6417 * fixed bug 5: added stubs for various Gray stream functions called
6418 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6419 installed, at least appropriate type errors are generated
6420 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6421 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6422 consistently in DEFMETHOD forms.
6423 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6424 it doesn't seem to affect SBCL after all
6425 * The C runtime system now builds with better optimization and many
6426 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6428 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6430 * The system is now under CVS at SourceForge (instead of the
6431 CVS repository on my home machine).
6432 * The new signal handling code has been tweaked to treat register
6433 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6434 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6435 downstream, e.g. in debug-int.lisp, has implicit dependencies
6436 on the unsignedness of integer representation of machine words,
6437 and that caused the system to bomb out with infinite regress
6438 when trying to recover from type errors involving signed values,
6439 e.g. (BUTLAST '(1 2 3) -1).)
6440 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6441 (This was one of the bugs Peter Van Eynde reported back in July.)
6442 * The system now uses code inspired by Colin Walters' O(N)
6443 implementation of MAP (from the cmucl-imp@cons.org mailing
6444 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6445 inline the MAP operation, and there is more than one
6446 sequence argument to the MAP call (so that it can't just
6447 do ETYPECASE once and for all based on the type of the
6448 single sequence argument). (The old non-inline implementation
6449 of the general M-argument sequence-of-length-N case required
6450 O(M*N*N) time when any of the sequence arguments were LISTs.)
6451 * The QUIT :UNIX-CODE keyword argument has been renamed to
6452 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6453 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6455 * Raymond Wiker's patches to port dynamic loading from Linux to
6456 FreeBSD have been added.
6457 * The BUGS file is now more nearly up to date, thanks in large part
6458 to Martin Atzmueller's review of it.
6459 * The debugger now flushes standard output streams before it begins
6460 its output ("debugger invoked" and so forth).
6461 * The core version number and fasl file version number have both
6462 been incremented, because of incompatible changes in the layout
6464 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6465 used to not be called for a saved Lisp image.)
6466 * Martin Atzmueller's version of a patch to fix a compiler crash,
6467 as posted on sbcl-devel 13 September 2000, has been installed.
6468 * Instead of installing Martin Atzmueller's patch for the
6469 compiler transform for SUBSEQ, I deleted the compiler transform,
6470 and transforms for some similar consing operations.
6471 * A bug in signal handling which kept TRACE from working on OpenBSD
6473 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6474 away by constant folding
6475 * The system now defines its address space constants in one place
6476 (in the Lisp sources), and propagates them automatically elsewhere
6477 (through GENESIS and the sbcl.h file). Therefore, patching the
6478 address map is less unnecessarily tedious and error-prone. The
6479 Lisp names of address space constants have also been systematized.
6480 * CVS tags like dollar-Header-dollar have been removed from
6481 the sources, because they have never saved me trouble and
6482 they've been source of trouble working with patches and other
6483 diff-related operations.
6484 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6485 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6487 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6489 * The system has been ported to OpenBSD.
6490 * The system now compiles with a simple "sh make.sh" on the systems
6491 that it's supported on. I.e., now you no longer need to tweak
6492 text in the target-features.lisp-expr and symlinks in src/runtime/
6493 by hand, the make.sh takes care of it for you.
6494 * The system is no longer so grossly inefficient when compiling code
6495 involving vectors implemented as general (not simple) vectors (VECTOR T),
6496 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6497 which dares to use the various sequence functions on non-simple
6498 vectors, takes less of a performance hit.
6499 * There is now a primitive type predicate VECTOR-T-P
6500 to test for the (VECTOR T) type, so that e.g.
6501 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6502 can now be compiled with some semblance of efficiency. (The old code
6503 turned the type declaration into a full call to %TYPEP at runtime!)
6504 * AREF on (VECTOR T) is still not fast, since it's still compiled
6505 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6506 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6507 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6508 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6509 without making full calls to SUBTYPEP at runtime.
6510 (Some analogous efficiency issues for non-simple vectors specialized to
6511 element types other than T, or for non-simple multidimensional arrays,
6512 have not been addressed. They could almost certainly be handled the
6513 same way if anyone is motivated to do so.)
6514 * The changes in array handling break binary compatibility, so
6515 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6516 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6517 instead of (VALUES T T).
6518 * By following the instructions that Dan Barlow posted to sbcl-devel
6519 on 2 July 2000, I was able to enable primitive dynamic object
6520 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6521 functionality is not implemented (since it calls ld to resolve
6522 library references automatically, requiring RUN-PROGRAM for its
6523 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6524 try to resolve library references) is now supported.
6525 * The system now flushes the standard output streams when it terminates,
6526 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6527 them at several other probably-convenient times, e.g. in each pass of
6528 the toplevel read-eval-print loop, and after evaluating a form given
6529 as an "--eval" command-line option. (These changes were motivated by a
6530 discussion of stream flushing issues on cmucl-imp in August 2000.)
6531 * The source transform for TYPEP of array types no longer assumes
6532 that an array whose element type is a not-yet-defined type
6533 is implemented as an array of T, but instead punts, so that the
6534 type will be interpreted at runtime.
6535 * There is now some support for cross-compiling in make.sh: each of
6536 the phases of make.sh has its own script. (This should be transparent
6537 to people doing ordinary, non-cross-compile builds.)
6538 * Since my laptop doesn't have hundreds of megabytes of memory like
6539 my desktop machine, I became more motivated to do some items on
6540 my to-do list in order to reduce the size of the system a little:
6541 ** Arrange for various needed-only-at-cold-init things to be
6542 uninterned after cold init. To support this, those things have
6543 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6544 symbols with such names are now uninterned after cold init).
6545 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6546 fasl files for cold load.
6547 ** Remove the old compiler structure pooling code (which used to
6548 be conditional on the target feature :SB-ALLOC) completely.
6549 ** Redo the representation of some data in cold init to be more compact.
6550 (I also looked into supporting byte compiled code at bootstrap time,
6551 which would probably reduce the size of the system a lot, but that
6552 looked too complicated, so I punted for now.)
6553 * The maximum signal nesting depth in the src/runtime/ support code has
6554 been reduced from 4096 to 256. (I don't know any reason for the very
6555 large old value. If the new smaller value turns out to break something,
6556 I'll probably just bump it back up.)
6557 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6559 * Many, many bugs reported by Peter Van Eynde have been added to
6560 the BUGS list; some have even been fixed.
6561 * While enabling dynamic object file loading, I tried to make the
6562 code easier to understand, renaming various functions and variables
6563 with less ambiguous names, and changing some function calling
6564 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6565 * While trying to figure out how to do the OpenBSD port, I tried to
6566 clean up some of the code in src/runtime/. In particular, I dropped
6567 support for non-POSIX signal handling, added various comments,
6568 tweaked the code to reduce the number of compilation warnings, and
6569 renamed some files to increase consistency.
6570 * To support the new automatic configuration functionality in make.sh,
6571 the source file target-features.lisp-expr has been replaced with the
6572 source file base-target-features.lisp-expr and the machine-generated
6573 file local-target-features.lisp-expr.
6574 * fixed a stupid quoting error in make.sh so that using CMU CL
6575 "lisp -batch" as cross-compilation host works again
6577 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6579 * DESCRIBE no longer tries to call itself recursively to describe
6580 bound/fbound values, so that it no longer fails on symbols which are
6581 bound to themselves (like keywords, T, and NIL).
6582 * DESCRIBE now works on generic functions.
6583 * The printer now prints less-screwed-up representations of closures
6584 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6585 * A private symbol is used instead of the :EMPTY keyword previously
6586 used to mark empty slots in hash tables. Thus
6587 (DEFVAR *HT* (MAKE-HASH-TABLE))
6588 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6589 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6590 now does what ANSI says that it should. (You can still get
6591 similar noncompliant behavior if bang on the hash table
6592 implementation with all the symbols you get back from
6593 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6594 This breaks binary compatibility, since tests for equality to
6595 :EMPTY are wired into things like the macroexpansion of
6596 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6598 * There's now a minimal placeholder implementation for CL:STEP,
6599 as required by ANSI.
6600 * An obscure bug in the interaction of the normal compiler, the byte
6601 compiler, inlining, and structure predicates has been patched
6602 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6603 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6605 * Missing ordinary arguments in a macro call are now detected even
6606 when the macro lambda list contains &KEY or &REST.
6607 * The debugger no longer complains about encountering the top of the
6608 stack when you type "FRAME 0" to explicitly instruct it to go to
6609 the top of the stack. And it now prints the frame you request even
6610 if it's the current frame (instead of saying "You are here.").
6611 * As specified by ANSI, the system now always prints keywords
6612 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6614 * The default initial SIZE of HASH-TABLEs is now smaller.
6615 * Type information from CLOS class dispatch is now propagated
6616 into DEFMETHOD bodies, so that e.g.
6617 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6619 is now basically equivalent to
6620 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6621 (DECLARE (TYPE SINGLE-FLOAT X))
6623 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6624 operation, without having to do run-time type dispatch.
6625 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6626 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6627 * Since I don't seem to be making big file reorganizations very often
6628 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6629 is overflowing my ability to conveniently back them up), I've finally
6630 checked the system into CVS. (The CVS repository is on my home system,
6631 not at SourceForge -- putting it on SourceForge might come later.)
6632 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6633 high-level GC-NOTIFY-FOO functions send their output. (There's
6634 still very little control of where low-level verbose GC functions
6635 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6636 less than it used to -- the GC-NOTIFY-FOO functions are now under
6637 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6638 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6639 in only one place in the source code, and propagates it automatically
6640 everywhere that it's needed. Thus e.g. when I bump the version from
6641 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6642 * The C source files now include boilerplate legalese and documentation
6643 at the head of each file (just as the Lisp source files already did).
6644 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6645 to his page will be replaced with a link to his new CLiki service.
6647 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6649 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6650 * The build process now looks for GNU make under the default name "gmake",
6651 instead of "make" as it used to. If GNU make is not available as "gmake"
6652 on your system, you can change this default behavior by setting the
6653 GNUMAKE environment variable.
6654 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6655 can build without error under CMU CL.
6657 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6659 * There is now a partial SBCL user manual (with some new text and some
6660 text cribbed from the CMU CL manual).
6661 * The beginnings of a profiler have been added (starting with the
6662 CMU CL profiler and simplifying and cleaning up). Eventually the
6663 main interface should be through the TRACE macro, but for now,
6664 it's still accessed through vaguely CMU-CL-style functions and macros
6665 exported from the package SB-PROFILE.
6666 * Some problems left over from porting CMU CL to the new
6667 cross-compilation bootstrap process have been cleaned up:
6668 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6669 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6670 part when getting rid of the compiler *BACKEND* stuff.)
6671 ** The value of *NULL-TYPE* was screwed up, because it was
6672 being initialized before the type system knew the final
6673 definition of the 'NULL type. This screwed up several key
6674 optimizations in the compiler, causing inefficiency in all sorts
6675 of places. (I found it because I wanted to understand why
6676 GET-INTERNAL-RUN-TIME was consing.)
6677 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6678 PROCLAIM FTYPE information. Unfortunately this broke binary
6679 compatibility again, since now the forms output by DEFGENERIC
6680 to refer to functions which didn't exist in 0.6.3.
6681 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6682 can use the new (as of 0.6.3) transform for SOME into MAP into
6684 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6685 values to (INTEGER 0 1000000), so that the time code will no longer
6686 occasionally get blown up by Linux returning 1000000 microseconds
6687 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6688 its output conform to the ANSI spec. (Alas, this makes its output
6689 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6690 * A full call to MAP NIL with a single sequence argument no longer conses.
6691 * fixes to problems pointed out by Martin Atzmueller:
6692 * The manual page no longer talks about multiprocessing as though
6693 it were currently supported.
6694 * The ILISP support patches have been removed from the distribution,
6695 because as of version 5.10.1, ILISP now supports SBCL without us
6696 having to maintain patches.
6697 * added a modified version of Raymond Toy's recent CMU CL patch for
6698 EQUALP comparison of HASH-TABLE
6700 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6702 * The system still can't cross-compile itself with
6703 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6704 entails), but at least it can compile more of itself that way
6705 than it used to be able to, and various buglets which were uncovered
6706 by trying to cross-compile itself that way have now been fixed.
6707 * This release breaks binary compatibility again. This time
6708 at least I've incremented the FASL file format version to 2, so that the
6709 problem can be detected reliably instead of just causing weird errors.
6710 * various new style warnings:
6711 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6712 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6713 ** using the lexical binding of a variable named in the *FOO* style
6714 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6715 as specified by ANSI.
6716 * *RANDOM-STATE* is no longer automatically initialized from
6717 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6718 default behavior of the system is to repeat its behavior every time
6719 it's run. If you'd like to change this behavior, you can always
6720 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6721 old convention there was no comparably easy way to get the system to
6722 repeat its behavior every time it was run.
6723 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6724 FTYPE declarations has been removed, in favor of their ANSI
6725 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6726 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6727 the types of their sequence arguments can be determined at compile time.
6728 This is done through a new open code expansion for MAP which eliminates
6729 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6730 argument types can be determined at compile time.
6731 * The optimizer now transforms COERCE into an identity operation when it
6732 can prove that the coerced object is already of the correct type. (This
6733 can be a win for machine generated code, including the output of other
6734 optimization transforms, such as the MAP transform above.)
6735 * Credit information has been moved from source file headers into CREDITS.
6736 * Source file headers have been made more standard.
6737 * The CASE macro now compiles without complaining even when it has
6740 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6742 * (Note that the way that the PCL macroexpansions were rewritten
6743 to accommodate the change in DEFGENERIC below breaks binary
6744 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6745 not run under sbcl-0.6.2. Once we get out of alpha releases,
6746 i.e. hit release 1.0.0, we'll probably try to maintain binary
6747 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6748 and sbcl-1.4.4. Until then, however, it might be fairly common
6749 for maintenance releases to break binary compatibility.)
6750 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6752 * The reporting of unhandled signals has been changed to print some
6753 explanatory text as well as the report form. (Previously only
6754 the report form was printed.)
6755 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6756 it defines, so that the compiler no longer issues undefined function
6757 warnings for compiled-but-not-yet-loaded generic functions.
6758 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6759 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6760 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6761 section of the ANSI spec are supported.
6762 * The "" nickname for the "KEYWORD" package has been removed.
6763 The reader still handles symbol tokens which begin with a package marker
6764 as keywords, but it doesn't expose its mechanism for doing so in the
6765 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6766 * The system now issues STYLE-WARNINGs for contradictory TYPE
6767 proclamations. (Warnings for contradictory FTYPE proclamations would
6768 be nice too, but those can't be done usefully unless the type system
6769 is made smarter about FUNCTION types.)
6770 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6771 systematized, so that "*target-*.lisp is supposed to exist only on the
6772 target and imply that there's a related file which exists on the
6773 host, and *host-*.lisp is supposed to exist only on the host and imply
6774 that there's a related file which exists on the target. This involves a
6775 lot of renaming. Hopefully the acute confusion caused by the renaming
6776 will be justified by the reduction in chronic confusion..
6777 ** runtime-type.lisp -> early-target-type.lisp
6778 ** target-type.lisp -> late-target-type.lisp
6779 ** early-host-format.lisp -> early-format.lisp
6780 ** late-host-format.lisp -> late-format.lisp
6781 ** host-error.lisp -> misc-error.lisp
6782 ** early-error.lisp -> early-target-error.lisp
6783 ** late-error.lisp -> late-target-error.lisp
6784 ** host-defboot.lisp -> early-defboot.lisp
6785 ** code/misc.lisp -> code/target-misc.lisp
6786 ** code/host-misc.lisp -> code/misc.lisp
6787 ** code/numbers.lisp -> code/target-numbers.lisp
6788 ** code/early-numbers.lisp -> numbers.lisp
6789 ** early-host-type.lisp -> early-type.lisp
6790 ** late-host-type.lisp -> late-type.lisp
6791 ** host-typep.lisp -> typep.lisp
6792 ** load.lisp -> target-load.lisp
6793 ** host-load.lisp -> load.lisp
6794 ** host-disassem.lisp -> disassem.lisp
6795 ** host-insts.lisp -> insts.lisp
6796 ** byte-comp.lisp -> target-byte-comp.lisp
6797 ** host-byte-comp.lisp -> byte-comp.lisp
6798 ** host-signal.lisp -> signal.lisp
6799 ** host-defstruct.lisp -> defstruct.lisp
6800 ** late-target-type.lisp -> deftypes-for-target.lisp
6801 Furthermore, several other previously target-only files foo.lisp (e.g.
6802 hash-table.lisp and random.lisp) have been split into a target-and-host
6803 foo.lisp file and a target-only target-foo.lisp file, with their key type
6804 definitions in the target-and-host part, so that the cross-compiler will
6805 know more about target types.
6806 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6807 gone away. In their place are various *BACKEND-FOO* variables
6808 corresponding to the slots of the old structure.
6809 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6810 into the target SBCL has been fixed.
6811 * The chill.lisp system for loading cold code into a running SBCL
6813 * Support for the CMU CL "scavenger hook" extension has been removed.
6814 (It was undocumented and unused in the CMU CL sources that SBCL was
6815 derived from, and stale in sbcl-0.6.1.)
6816 * Various errors in the cross-compiler type system were detected
6817 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6818 (enabling various consistency checks). Many of them were fixed,
6819 but some hard problems remain, so the compiler is back to
6820 running without *TYPE-SYSTEM-INITIALIZED* for now.
6821 * As part of the cross-compiler type system cleanup, I implemented
6822 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6823 * I have started adding UNCROSS calls throughout the type system
6824 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6825 on cross-compiler input files will be able to go away, and various
6827 * CONSTANTP now returns true for quoted forms (as explicitly required
6830 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6832 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6833 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6834 (MAKE-LIST -1). In the longer term, it ought to become true
6835 that declarations are assertions even at SAFETY 1. For now, it's not
6836 quite true even at SAFETY 3, but it's at least more nearly true..
6837 (Note that this change seems to increases the size of the system by
6838 O(5%) and to decrease the speed of the compiler by 20% or more.)
6839 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6840 for the problem of printing dozens of lines of distracting information
6841 about low-level system machinery as part of the top stack frame
6842 on entry to the debugger when an undefined function was called.
6843 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6844 is not reset to COMMON-LISP-USER.
6845 * Compilation of stuff related to dyncount.lisp has been made conditional
6846 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6847 smaller. The various dyncount-related symbols have been moved into
6848 a new "SB-DYNCOUNT" package.
6849 * tty-inspect.lisp has been renamed to inspect.lisp.
6850 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6851 feature has gone away. (When we eventually port to other flavors of
6852 libc and/or Unix, we'll try to make the differences between flavors
6853 invisible at the user level.)
6854 * Various other *FEATURES* tags, and/or their associated conditionals,
6855 have been removed if obsolescent, or given better documentation, or
6856 sometimes given more-mnemonic names.
6858 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6860 * tidied up "make.sh" script
6861 * tidied up system directory structure
6862 * better "clean.sh" behavior
6863 * added doc/FOR-CMUCL-DEVELOPERS
6864 * many many small tweaks to output format, e.g. removing possibly-confusing
6865 trailing #\. character in DESCRIBE-INSTANCE
6866 * (EQUALP #\A 'A) no longer signals an error.
6867 * new hashing code, including EQUALP hashing
6868 * tidied up Lisp initialization and toplevel
6869 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6870 * command line argument processing
6871 * added POSIX-GETENV function to deal with Unix-ish environment variables
6872 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6873 terminating SBCL on EOF
6874 * non-verbose GC by default
6875 * There is no more "sbcl" shell script; the sbcl file is now the C
6876 runtime executable (just like CMU CL).
6877 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6879 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6880 symbol and package information as Lisp native symbol and package objects
6881 instead of strings naming symbols and strings naming packages. This way,
6882 whenever packages are renamed (as in warm init), debug information is
6883 transformed along with everything else.
6884 * tweaked the optimization policy declarations which control the building
6885 of SBCL itself. Now, among other things, the system no longer saves
6886 source location debugging information. (This helps two problems at once
6887 by reducing SBCL size and by keeping SBCL from trying to look for its
6888 sources -- which may not exist -- when reporting errors.)
6889 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6890 debugging and testing purposes
6891 * cleaned up printing, making the printer call PRINT-OBJECT for
6892 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6893 methods, giving nearly-ANSI behavior
6894 * converted almost all special variables to use *FOO* naming convention
6895 * deleted PARSE-TIME functionality, since it can be done portably
6896 * moved some files out of cold init into warm init
6897 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6899 * regularized formatting of source files
6900 * added an install.sh script
6901 * fixed ridiculous memory usage of cross-compiler by making
6902 compiler/alloc.lisp not try to do pooling unless it can hook
6903 itself into the GC of the cross-compilation host. Now the system
6904 builds nicely on my old laptop.
6905 * added :SB-ALLOC in target-features.lisp-expr
6906 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6907 was not implemented)
6908 * re-did condition handling and note reporting in the compiler. Notes
6909 are no longer handled by signalling conditions. Style warnings
6910 and warnings are handled more correctly and reported in such a way
6911 that it's easy to find one or the other in your output (so that you
6912 can e.g. figure out which of many problems caused COMPILE-FILE to
6914 * changed the severity of several compiler warnings from full WARNING
6915 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6916 compiler note reporting so that it doesn't use the condition system
6917 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6918 COMPILE-FILE command)
6919 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6920 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6921 no longer supported, since their implementation was deeply intertwingled
6922 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6923 * removed bogus "support" for compiler macros named (SETF FOO), and
6924 removed the compiler macro for SETF INFO (but only after making a fool
6925 of myself on the cmucl-imp mailing list by posting a bogus patch for
6926 DEFINE-COMPILER-MACRO..)
6927 * Compiled files containing forms which have side effects on the Lisp
6928 reader (such as DEFPACKAGE forms) are now handled more correctly.
6929 (Compiler queuing of top level lambdas has been suppressed by setting
6930 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6931 * deleted various currently-unused source files, e.g. gengc.lisp. They
6932 may be added back at some point e.g. when porting to other architectures,
6933 but until they are it's distracting to distribute them and to try to
6935 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6936 there were so many of them they're just distractions, and UNCROSS is
6937 known to be able to handle the current sources
6938 * moved PROFILE functionality into TRACE, so that it will be clear
6939 how the wrapping and unwrapping of functions when you profile them
6940 interacts with the wrapping and unwrapping of functions when you
6941 trace them. (Actually, the functionality isn't there yet, but at least
6942 the interface specification is there. Hopefully, the functionality will
6943 arrive with some future maintenance release.)
6944 * removed host-oops.lisp
6945 * changed signature of QUIT function to allow UNIX-CODE argument
6946 * fixed READ-SEQUENCE bug
6947 * tweaked verbose GC output so that it looks more like the progress
6948 output that ANSI specifies for functions like LOAD
6949 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6950 * added <http://sbcl.sourceforge.com> to the banner information printed by