1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.10
3 * enhancement: support building the manual under texinfo version 5.
5 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
6 (regression since 1.1.9)
8 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
9 * enhancement: ASDF has been updated to 3.0.2.
10 * optimization: stack frames are packed more efficiently on x86oids, which
11 ought to reduce the frequency of Methuselahn conservative references (it
12 certainly helps with gc.impure.lisp / BUG-936304 on x86).
13 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
14 recognized in modular arithmetic contexts, and compile to native negate,
15 rather than going through bignums only to keep the low bits.
16 * bug fix: Compiling potential modularic arithmetic forms does not cause type
17 errors when some integer types lack lower or upper bounds. (lp#1199127)
18 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
19 bitwidth before being used in a non-modular context. (lp#1199428)
20 * bug fix: Multiple catch/unwind blocks in a single function are now
21 allocated in the right stack order on win32. (lp#1072739)
23 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
24 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
25 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
26 * enhancement: disassemble now annotates some previously missing static
27 functions, like LENGTH.
28 * enhancement: clean.sh now also cleans doc/internals.
29 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
30 print a symbol with a package prefix.
31 * enhancement: The debugger and backtracing are more robust against buggy
33 * optimization: calls to static functions on x86-64 use less instructions.
34 * optimization: compute encode-universal-time at compile time when possible.
35 * optimization: when referencing internal functions as #'x, don't go through
36 an indirect fdefn structure.
37 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
38 * optimization: (mod fixnum) type-checks are performed using one unsigned
39 comparison, instead of two.
40 * optimization: enable more modular arithmetic transforms in the presence of
42 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
43 when the result is known to be negative.
44 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
45 * optimization: comparisons between rationals and constant floats or between
46 integers and constant ratios are now converted to rationals/integers at
48 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
49 * bug fix: problems with NCONC type derivation (reported by Jerry James).
50 * bug fix: EXPT type derivation no longer constructs bogus floating-point
51 types. (reported by Vsevolod Dyomkin)
52 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
53 addrinfo. (lp#1187041, patch by Jerry James)
54 * bug fix: uninitialized type-error conditions can now be printed.
56 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
57 listening, allowing several tests to run in parallel.
58 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
59 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
61 * bug fix: Specialised SIMD-PACK types can be negated.
62 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
63 reported by Eric Marsden)
64 * bug fix: FP return values from foreign calls are always rounded to single
65 or double float precision on x87.
66 * bug fix: Known-safe vector access on x86oids should not fail spuriously
67 when the index is of the form (+ x constant-positive-integer).
68 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
69 * bug fix: backtrace printer no longer tries to create very large lists when
70 the arg-count register is clobberred by other code. (lp#1192929)
71 * bug fix: x86 should never signal an FP exception while boxing an FP value,
72 a situation that lands us into ldb.
74 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
75 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
76 ROOM, plus a few SB-INTROSPECT functions) has been completely
77 rewritten; it may now exhibit different bugs than before.
78 * new feature: minimal runtime/compiler intrastructure support for SSE
79 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
80 feature :sb-simd-pack. This should enable intrinsics extensions as
81 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
82 for maintaining a branch for so long.
83 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
84 the working directory of the spawned process.
85 (lp#791800) (patch by Matthias Benkard)
86 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
87 stack-allocated on PPC.
88 * enhancement: "fixed objects" can now be stack-allocated on PPC.
89 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
90 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
91 also returns VOPs which do not translate any functions, and finds
92 defoptimizer types ir2convert and stack-allocate-result.
93 * enhancement: better type derivation for APPEND, NCONC, LIST.
95 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
96 heap in a manner similar to the GC rather than its previous ad-hoc
97 scheme, and is therefore no less and possibly more accurate.
98 * fixes and enhancements related to Unicode:
99 ** the character database information has been updated to Unicode 6.2;
100 ** support for canonical and compatibility decomposition of characters has
101 been added, along with support for primary composition;
102 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
103 NFKD) has been included;
104 ** querying the character database for code points not defined by Unicode
105 gives less wrong answers (lp#1178038, reported by Ken Harris)
106 * enhancement: print intermediate evaluation results for some ASSERTed
107 expressions. (lp#789497) (patch by Alexandra Barchunova)
108 * enhancement: x86-64 disassemblies are annotated with unboxed constant
109 values when there are references to (RIP-relative) unboxed constants.
110 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
111 of quadratically with the size of the input in the worst case.
113 * bug fix: handle errors when initializing *default-pathname-defaults*,
114 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
115 decoding errors, or directories being deleted.
116 * bug fix: Loading a core with a discontiguous dynamic space now correctly
117 computes the amount of dynamic space used.
118 * bug fix: disassembler missing ",8" on SHLD
119 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
120 that provide an "invalid" stack frame link for the signal handler
121 itself now use the saved-fp-and-pc mechanism to pick up from the stack
122 frame in the interrupt (signal) context. This is known to affect
123 threaded FreeBSD/x86-64.
124 * bug fix: some LOOP statements couldn't be compiled.
126 * bug fix: sb-sequence:dosequence works on literal vectors.
127 * bug fix: errors in generic arithmetic show the assembly routine's
128 caller on x86 and x86-64. (lp#800343)
129 * bug fix: Compile-time type errors should never result in COMPILE-FILE
131 * bug fix: Known bad local calls do not cause strange failures when
132 emitting or dumping code. (lp#504121)
133 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
134 codegen errors: type checks are inserted as necessary. (lp#1177703)
135 * bug fix: Unsigned modular arithmetic is correctly converted into signed
136 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
137 * bug fix: a combination of inlined local function with &optional and
138 recursion no longer causes undescriptive compiler errors. (lp#1180992)
139 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
140 when testing for non-zero-ness.
141 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
143 * bug fix: Type mismatch for the value of conditional expressions are
144 correctly reported when detected at compile-time, instead of complaining
145 about a constant NIL (similar for non-EQ-comparable catch tags).
146 * bug fix: Referring to INLINE global functions as values should not result
147 in a compilation failure. (lp#1035721)
148 * optimization: faster ISQRT on fixnums and small bignums
149 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
150 * optimization: On x86-64, the number of multi-byte NOP instructions used
151 for code alignment is now always minimal.
152 * optimization: On 64-bit targets, the compiler generates much faster
153 code for type checks for types known at compile time that are smaller
154 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
155 their COMPLEX variants.
156 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
157 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
158 * optimization: ROOM no longer conses so egregiously on non-x86oid
160 * optimization: associative bitwise operations reassociate patterns like
161 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
163 * optimization: quasiquote expressions now perform more constant folding,
164 instead of consing equal lists at runtime. (lp#1026439)
165 * optimization: local call analysis of inlined higher-order function
166 should converge more quickly, resulting in better code for complex
168 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
169 integer constants are handled more cleverly, especially when they
170 can be represented as sign-extended (signed-byte 32). (Based on a
171 patch by Douglas Katzman)
172 * optimization: IF/IF conversion should reliably result in sane code
173 when (some of) the results of the inner IF are always false or
175 * optimization: On x86oids, variable right shifts of machine words are
176 compiled into straight SAR/SHR, instead of going through the generic
179 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
180 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
182 * bug fix: :allocation slot option works for condition slots
184 * bug fix: redefining conditions does not lead to multiple evaluations of
185 hairy slot initfunctions anymore (lp#1164969)
186 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
188 * bug fix: function constants now work as initforms and default initarg
189 values of conditions (lp#539517)
190 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
191 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
192 * bug fix: no more bogus ## references when pretty printing backquoted
193 forms with non-trivial structure sharing. (lp#1161218)
194 * bug fix: Don't signal an error on (setf (documentation nil 'function)
195 "doc"). Signal a style-warning instead when trying to set documentation
196 of NIL for all other documentation types. (Reported by Zach
197 Beane; regression since 2e52fa05.)
198 * bug fix: modular arithmetic involving large constants and conditionals
199 should no longer result in spurious dead code elimination. (Reported by
201 * bug fix: our mach exception handler can seemingly called very early in
202 the program execution process on OS X 10.8.0. Try and handle that case
203 robustly, without potentially leaking mach ports too much.
204 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
206 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
207 * enhancement: the continuable error when defknown-ing over extant
208 fndb entries can be ignored by passing :overwrite-fndb-silently t
209 as a keyword argument to sb-c:defknown (after attributes). Useful
210 to allow defknown to be re-loaded. Use with :allow-other-keys t
211 for backward compatibility.
212 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
214 * bug fix: Prevent a make-array transform from modifying source forms
215 causing problems for inlined code. Thanks to Bart Botta.
216 (regression since 1.0.42.11-bis)
217 * bug fix: clear-output calls the correct gray stream routine,
218 sb-gray:stream-clear-output. (lp#1153257)
219 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
221 * bug fix: Better error messages for package operations (lp#1154776)
222 * bug fix: delete-package on a nonexistent package should signal a cerror.
223 (regression since 1.0.37.44).
224 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
225 (lp#1154946, lp#1072112)
226 * bug fix: compiling make-array no longer signals an error when the
227 element-type is an uknown type, a warning is issued instead.
228 Thanks to James Kalenius (lp#1156095)
229 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
230 produces wrong results for some inputs. (Thanks to Jan Moringen.)
233 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
234 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
236 * new feature: package local nicknames. See manual for details.
237 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
238 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
239 * enhancement: easier to use restarts for resolving name-conflicts
240 resulting from IMPORT, EXPORT, or USE-PACKAGE.
241 * enhancement: variant DEFPACKAGE forms now signal a full error with
242 restarts provided for resolving the situation. (lp#891351)
243 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
244 DEFPACKAGE forms can now signal a full error with restarts provided for
245 resolving the situation. See manual for details. (lp#891351)
246 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
247 (Thanks to Anton Kovalenko.) (lp#1102748)
248 * enhancement: backtrace improvements
249 ** secondary CLOS dispatch functions have better debug names (lp#503081)
250 ** easier to read method names in backtraces. See
251 SB-DEBUG:*METHOD-FRAME-STYLE*.
252 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
253 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
254 SB-DEBUG:BACKTRACE-AS-LIST.
255 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
256 information is available in less intrusive form as frame annotations.
257 * enhancement: SB-POSIX now provides MAP-ANON.
258 * enhancement: test-suite results are colorized, failures in red, unexpected
259 success in green. Works on Windows and on terminals with ANSI escape code
260 support. Can be disabled with --no-color.
261 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
262 (thanks to James M. Lawrence)
263 * bug fix: no more unused variable style warnings from RESTART-CASE
264 macroexpansion (lp#1113859)
265 * bug fix: no more unused variable style warnings when loading
266 sb-bsd-sockets.asd (lp#1114681)
267 * bug fix: deleting a package removes it from implementation-package
268 lists of other packages.
269 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
270 This does not fix the occasional "interrupt already pending" issue, though.
271 * bug fix: (setf (documentation 'x 'function)) and
272 (setf (documentation #'x t)) set documentation in different places.
273 (regression since 1.0.43.63)
274 * bug fix: build on newer glibc. (lp#1095036)
276 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
277 * optimization: LOOP expressions using "of-type character" have slightly
278 more efficient expansions.
279 * bug fix: very long (or infinite) constant lists in DOLIST do not result
280 in very long compile times or heap exhaustion anymore. (lp#1095488)
281 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
282 * bug fix: adjust-array ignored :initial-element for simple-vectors.
284 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
285 longer cause infinite loops (on circular data) or violate eqlity
286 constraints. (lp#1099708)
287 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
289 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
290 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
292 * enhancement: support for C-c to interrupt the foreground thread
293 on Windows. (Thanks to Anton Kovalenko.)
294 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
295 * enhancement: Safepoint builds on POSIX platforms can now optionally be
296 built without pseudo-atomic sequences and their run-time overhead.
297 * enhancement: Threads created outside of Lisp can enter Lisp through
298 alien callbacks and appear as Lisp threads for the duration of that
299 function invocation. On safepoint builds only.
300 * enhancement: Miscellaneous improvements to namestrings and underlying
301 calls to OS functions for file system access on Windows. (Thanks to
303 * enhancement: The MSI installer support for Windows now uses Windows
304 Installer XML at least version 3.5 and includes various usability
305 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
306 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
307 on Windows. (Thanks to Anton Kovalenko.)
308 * enhancement: The Windows backend now supports the x86-64 platform.
309 (Thanks to Anton Kovalenko.)
310 * bug fix: fasls are now once again directly executable (on platforms
311 supporting shebang lines, with a suitably-installed sbcl).
312 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
313 * bug fix: Fix CAS access to slots of direct instances of structure classes
314 in the presence of subclasses sharing the same conc-name.
315 * bug fix: Logical pathname namestrings on Windows have been changed to
316 be lower-case, to minimize differences between POSIX and Windows.
318 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
319 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
320 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
321 (NT 5.0) is no longer being maintained.
322 * notice: Starting with this version, SBCL on Windows no longer supports
323 building with disabled thread support.
324 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
325 * enhancement: New feature sb-dynamic-core allows the runtime to be
326 rebuilt or relocated without requiring changes to the core file on
327 all linkage table platforms. Required on Windows. (Thanks to Anton
329 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
330 * enhancement: I/O on Windows unnamed pipes is interruptible
331 asynchronously using interrupt-thread, timers when running on Windows NT
332 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
334 * enhancement: Support for the experimental safepoint-based stop-the-world
335 protocol on the PowerPC platform.
336 * bug fix: Non-blocking reads from the Windows console were not necessarily
337 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
338 * bug fix: stability of threads on Windows has been improved upon through
339 an updated stop-the-world protocol (thanks to Anton Kovalenko).
341 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
342 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
343 (COMPILE and COMPILE-FILE still do.)
344 * optimization: the SPARC backend now supports the precise generational
345 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
346 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
347 * enhancement: add experimental support for the SB-THREAD feature and the
348 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
349 Threads are enabled by default, and this version of SBCL is considered
350 to be the last and final release to officially support building with
352 * optimization: The compiler no longer rotates loops in some cases where
353 this transformation actually lead to worse code being generated.
354 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
355 symbol-macros by lexical bindings.
356 * bug fix: stack allocation was prevented by high DEBUG declaration in
358 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
359 (thanks to SANO Masatoshi)
360 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
361 :JUNK-ALLOWED was true.
362 * bug fix: type derivation inferred overly conservative types for
363 unions of array types. (lp#1050768)
365 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
366 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
367 source annotation of DISASSEMBLE output. Defaults to T.
368 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
369 WAIT-P argument added to WITH-RECURSIVE-LOCK.
370 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
372 * enhancement: Optional features (not enabled by default) allow the
373 use of signals for inter-thread synchronization to be reduced on certain
374 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
375 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
376 to test these experimental features. Known remaining bugs include minor
377 thread safety issues, less timely freeing of memory by GC, and certain
378 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
379 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
380 comparisons, particularly on almost-sorted inputs.
381 * bug fix: Reading floats with large exponents no longer takes too much time
382 before reporting that the exponent is too large.
383 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
384 correctly when the received datagram is larger than the provided buffer.
385 (lp#1023438, thanks to Robert Uhl)
386 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
387 a SYMBOL-VALUE form with a constant symbol argument.
388 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
389 into a DEFCAS defined place was used as the place.
390 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
391 for from bit-vectors.
392 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
393 lead to internal errors or crashes (lp#1058799).
394 * documentation: a section on random number generation has been added to the
397 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
398 * enhancement: implicit generic function warnings now specify the package
399 in which the new generic function is being created.
400 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
401 updates of CAS-able places (similar to Clojure's swap!).
402 * enhancement: run-program no longer decodes and re-encodes environment when
403 :environment argument is not provided. (lp#985904)
404 * enhancement: errors during compiler-macro expansion no longer cause
405 runtime errors, only a compile-time warning, otherwise behaving as if
406 the compiler macro had declined to expand.
407 * optimization: On x86-64, code alignment of block headers is done with
408 multi-byte NOPs now instead of repetitions of the single-byte NOP.
409 * optimization: MAP-INTO is substantially faster when the target sequence is
410 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
411 thanks to James M. Lawrence)
412 * optimization: the compiler no longer heap-conses to check exits in cases
413 where the exit function is dynamic extent, or when it can prove the exit
414 function cannot escape. (lp#1002534)
415 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
416 element type, and vectors that aren't SIMPLE-ARRAYs.
417 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
418 speed (around 1/3 the time in some cases), and a little better in terms of
419 comparison calls. (Thanks to Takeru Ohta)
420 * bug fix: On SPARC, a limitation on the number of code constants emittable
421 by the compiler has been lifted, allowing certain long functions to
422 compiled and assembled which had previously been unsupported; fixes
423 cl-bench on this ISA (lp#1008996).
424 * bug fix: potential for infinite recursion during compilation of CLOS slot
425 typechecks when dependency graph had loops. (lp#1001799)
426 * bug fix: error forms reported with some program-errors were not escaped
428 * bug fix: functions from EVAL are now on more equal footing with functions
429 from COMPILE. (lp#1000783, lp#851170, lp#922408)
430 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
431 objects as its :METHOD-COMBINATION argument, not just lists designating
432 method combinations. (lp#936513)
433 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
435 * bug fix: restore build on solaris/sparc. (lp#1008506)
436 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
437 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
438 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
439 as keyword arguments no longer accidentally match unevaluated symbols
441 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
442 parameter was zero, now it signals an error. (lp#905817, fixed since
444 * bug fix: run-program with :pty t no longer makes the pty as the process's
446 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
449 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
450 * RANDOM enhancements and bug fixes:
451 ** bug fix: the range and distribution of random integers could be
452 catastrophically wrong when the compiler derived the type of its
453 argument as a disjoint set of small integers.
454 ** bug fix: the distribution of random integers is now completely
455 uniform even when the specified limit is not a power of two.
456 (Previously some values could be about 0.1 % more probable than
457 others in the worst case.) (lp#309467)
458 ** RANDOM on large integer arguments is generally faster and conses
459 less than before; this is visible for fixnums above a length of
460 about 24 bits, but extremely so for bignums: the old implementation
461 used time and space quadratical in the size of the argument there,
462 the new one is linear.
463 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
464 main entry point, SB-EXT:QUIT is deprecated.
465 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
466 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
467 * enhancement: FASL loading no longer grabs the world-lock.
468 * enhancement: GENCGC reclaims space more aggressively when objects being
469 allocated are a large fraction of the total available heap space.
471 * enhancement: backtraces show the correct number of arguments for frames
472 called with too many arguments.
473 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
475 * enhancement: ASDF has been updated 2.21.
476 * optimization: fewer uses of full calls to signed modular functions.
478 * optimization: typechecking alien values is typically 5 x faster.
479 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
481 * bug fix: file compilation performance issues when dumping subtypes
482 of CHARACTER (lp#994487)
483 * bug fix: fixed disassembly of some SSE instructions on x86-64.
484 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
485 OPEN. (lp#969352, thanks to Kambiz Darabi)
486 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
488 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
489 classoid even if X was not the proper name of the class. (lp#941102)
490 * bug fix: declaration leakage between lexical environments due to careless
491 use of NCONC in MAKE-LEXENV. (lp#924276)
492 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
493 *default-pathname-defaults* contains NAME or TYPE components.
494 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
495 from CL package, e.g. (loop . 10).
496 * bug fix: run-program with existent or non-existent files for :output or
497 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
498 returns NIL instead of signalling an obscure error.
499 * bug fix: fix miscompilation of some logand forms with large constant
500 arguments. (lp#974406)
501 * bug fix: account for funcallable-instance objects properly in ROOM.
502 * bug fix: incorrect octets reported for c-string decoding errors.
504 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
506 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
507 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
508 allowing faster release of memory back to the OS. (lp#991293)
509 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
510 existing deadline for the dynamic scope of its body.
511 * bug fix: compiler-internal interval arithmetic needed to be more
512 conservative about open intervals when operated on by monotonic but not
513 strictly-monotonic functions. (lp#975528)
514 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
515 it's also slightly faster. (lp#998926)
516 * bug fix: better error messages for malformed declarations.
518 * bug fix: define-condition didn't return the name of the defined condition.
520 ** improved docstrings: REPLACE (lp#965592)
522 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
523 * bug fix: fix copy-structure. When copying from stack to heap, garbage
524 could end up in the heap making GC unhappy.
525 (Thanks to James Knight, lp#911027)
527 ** SBCL can now be built using Clang.
528 ** ASDF has been updated 2.20.
529 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
530 * bug fix: don't complain about a too-hairy lexical environment for inlining
531 when the function has never been requested for inlining. (lp#963530)
533 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
534 * enhancements to building SBCL using make.sh:
535 ** --fancy can be specified to enable all supported feature enhancements.
536 ** --with-<feature> and --without-<feature> can be used to specify
537 which features to build with.
538 ** --arch option can be used to specify the architecture to build for.
539 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
540 full-blows cross-compilation.)
541 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
542 which allows specifying name of the default interning package for the
544 * enhancement: when *READ-EVAL* is true, arrays with element type other than
545 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
546 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
547 null alien when malloc() fails. (lp#891268)
548 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
549 conditions can be conveniently accessed through function with the same
550 name, analogously to CONTINUE.
551 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
552 from the printer by type, causing an error marker to be printed instead.
553 (Thanks to Attila Lendvai)
554 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
555 generally behave better when errors occur during printing.
556 * enhancement: the test runner now takes a --report-skipped-tests argument
557 to report the individual tests skipped as well as the number of skipped
559 * enhancement: undefined functions now appear in backtraces as ("undefined
560 function") instead of ("bogus stack frame") on x86oids.
561 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
562 deadlock errors are reported in an easier-to-decipher manner.
563 * enhancement: DESCRIBE on type designators reports the expansion in more
565 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
566 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
567 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
568 * enhancement: better disassembly of segment-prefixes on x86 and other
569 instruction prefixes (e.g. LOCK) on x86 and x86-64.
570 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
571 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
572 * optimization: SUBSEQ on vectors of unknown element type is substantially
574 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
575 be stack-allocated. (lp#902351)
576 * optimization: the compiler is smarter about representation selection for
577 floating point constants used in full calls.
578 * optimization: the compiler no longer refuses to coerce large fixnums to
579 single floats inline, except on x86 where this limitation is still
581 * optimization: truncation operations on integers with constant divisor
582 arguments 1 and -1 are optimized away.
583 * bug fix: deadlock detection could report the same deadlock twice, for
584 two different threads. Now a single deadlock is reported exactly once.
585 * bug fix: interval-arithmetic division during type derivation did not
586 account for signed zeros.
587 * bug fix: compiler error when typechecking a call to a function with
588 non-constant keyword arguments.
589 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
590 * bug fix: condition slot accessors no longer cause undefined function
591 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
592 form that defines them. (lp#896379)
593 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
595 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
596 bogusly report NIL, T.
597 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
598 required arguments ignored and performed assignments to others.
600 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
601 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
602 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
603 * bug fix: redefining a function whose previous definition contained an
604 unknown type no longer causes a style-warning. (lp#806243)
605 * bug fix: undefined functions now appear in backtraces as ("undefined
606 function") instead of ("bogus stack frame") on non-x86oids.
607 * bug fix: backtraces are no longer cut off at ("undefined function") when
608 called under certain circumstances (involving a caller-allocated stack
610 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
611 systems. (regression since 1.0.53)
612 * bug fix: GC deadlocks from dladdr() on certain platforms.
613 * bug fix: broken standard streams no longer automatically cause recursive
614 errors on debugger entry.
615 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
616 (regression since 1.0.53)
617 * bug fix: attempts to stack allocate a required argument to a function with
618 an external entry point caused compiler-errors.
619 * bug fix: compiler notes for failed stack allocation for a function argument
620 no longer claim to be unable to stack allocate the function.
621 * bug fix: COERCE now signals a type-error on several coercions to
622 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
623 * bug fix: missing failure-to-stack-allocate compiler notes for some
624 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
625 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
627 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
629 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
630 * minor incompatible changes:
631 ** RENAME-FILE on a symbolic links used to rename the linked-to file
633 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
634 directory, but now signal an error instead. Use TRUENAME to resolve the
635 pathname if you wish to delete the linked directory, and DELETE-FILE if
636 you wish to delete the
637 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
638 symbols associated with it will trigger a compile-time warning.
639 * thread-related enhancements:
640 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
641 Many thanks to generous donors!)
642 ** Threading is now more reliable on non-Linux platforms. We still don't
643 consider threads on non-Linux platforms good enough to enable them by
644 default, but they're in a clearly better shape now.
645 ** Deadlines supported now on all platforms.
646 ** All blocking functions in the threading API now have a :TIMEOUT
648 ** Semaphore notification objects have been added to SB-THREAD.
649 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
650 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
651 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
652 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
653 using an API anologous to defining new SETFable places.
654 * GC-related enhancements and bug fixes:
655 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
656 and Gb suffixes. Default is megabytes as before.
657 ** on GENCGC targets, the default dynamic space size is now 512Mb for
658 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
659 exception, defaulting to mere 444Mb to fit under default ulimits.) The
660 new defaults are in place to prevent hitting swap on low-end systems.
661 Use build-time option --dynamic-space-size to build an SBCL with
662 another default, or the runtime option to adjust the size at startup: a
663 good size is at most equal to the amount of physical memory the system
665 ** on GENCGC targets, nursery and generation sizes now default to 5% of
667 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
668 refuses to create SIMPLE-FUN objects.
669 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
671 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
672 validation of pointer objects as GENCGC does, instead of a
673 comparatively weak bounds-check against the heap spaces.
674 * SB-BSD-SOCKETS bug fixes:
675 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
676 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
677 systems with getaddrinfo().
678 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
679 safe outside systems with getaddrinfo().
680 * enhancement: ASDF has been updated 2.019.
681 * enhancement: special-case TCO prevention for functions which never return
682 extended to untrusted types, keeping one more frame's worth of debug
683 information around in many cases.
684 * enhancement: debug-names of anonymous and local function are more
685 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
686 * enhancement: on win32, ABS of complex floats guards better against
687 overflows. (lp#888410)
688 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
689 process exiting with code 1. (lp#676987)
690 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
691 the system where on the filesystem the SBCL sources themselves are
692 located. (Thanks to Zach Beane)
693 * enhancement: the compiler is now able to derive tighter bounds for
694 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
695 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
696 correctly, even on wide-fixnum builds. (lp#887220)
697 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
698 resolved to directories.
699 * bug fix: type mismatch when assigning to lexical variables no longer
700 result in fasl-dumping internal type objects. (lp#890750)
701 * bug fix: type mismatch on (SETF AREF) and function return values no
702 longer result in fasl-dumping internal type objects.
703 * bug fix: With several combinations of argument types, for example (EXPT
704 <integer> <(complex double)>), EXPT now uses double-precision throughout
705 instead of partially calculating only to single-precision. (lp#741564;
706 thanks to Lutz Euler)
707 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
708 objects when interrupted by GC on PPC.
710 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
711 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
712 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
713 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
714 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
715 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
716 targets is now 63 bits (up from 61).
717 * enhancement: DESCRIBE now reports a lambda-list and source location
718 for complext setf-expanders.
719 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
720 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
721 of multiple-valued places to be set to NIL, instead of signalling an
722 error (per a careful reading of CLHS 5.1.2.3).
723 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
724 * bug fix: repair crash in x86oid darwin signal handling emulation
725 when built with certain compilers.
726 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
727 rotation arguments on x86-64. (lp#882151)
728 * bug fix: low-level control flow optimisations could result in bogus
729 code in functions with tail and non-tail calls to local functions on
731 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
732 to emit literal characters > (code-char 4095), for comparisons with
734 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
735 on 64 bit platforms. (lp#881445)
736 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
737 delete the wrong file when using relative pathnames. (lp#882877)
738 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
739 sequences and :KEY NIL.
741 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
742 * enhancement: ASDF has been updated to version 2.017.
743 * enhancement: the --core command line option now accepts binaries with
745 * enhancement: when built with :sb-core-compression, core files (regular
746 or executable) can be compressed with zlib. Use the :COMPRESSION
747 argument to SAVE-LISP-AND-DIE to specify a compression level.
748 * enhancement: --[no-]merge-core-pages determines whether the runtime
749 hints the operating system that identical core pages between SBCL
750 processes should share the same physical memory. Default is to only
751 enable this for compressed cores.
752 * optimization: SLEEP no longer conses.
753 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
754 or bit-vectors when using the standard pretty-print dispatch table.
755 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
757 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
758 AREF, CHAR, etc. (lp#826971)
759 * bug fix: compiler-errors causes by integer arguments with composed of
760 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
761 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
762 expressions. (lp#770184)
763 * bug fix: complex single float literals are correctly aligned when used
764 as arguments of arithmetic operators.
765 * bug fix: on 32-bit platforms, rounding of double floats larger than a
766 fixnum is correct. (reported by Peter Keller)
767 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
768 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
770 * bug fix: redefining classes such that slots with custom allocation are
771 added or removed works again.
773 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
774 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
775 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
776 MAKE-SOCKET-STREAM if using SERVE-EVENT.
777 * enhancement: added support for socket keepalive timeout intervals
778 and probe counts on Linux.
779 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
780 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
781 * enhancement: added new toplevel options --quit and --non-interactive
783 * enhancement: the Windows port of SBCL now builds and runs on Wine
784 (thanks to Anton Kovalenko).
785 * enhancement: more, and more correct, SSE instruction definitions on
786 x86-64 (thanks to Alexander Gavrilov).
787 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
788 to help the processor execute spin loops, when applicable. Currently
789 implemented for x86 and x86-64.
790 * optimization: unsigned integer divisions by a constant are implemented
791 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
792 * optimization: improved type-derivation for LOAD-TIME-VALUE.
793 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
794 instructions. (lp#814688)
795 * bug fix: COERCE to unfinalized extended sequence classes now works.
796 (reported by Jan Moringen; lp#815155)
797 * bug fix: a compiler error during typecheck generation, reported by Eric
799 * bug fix: obsolete instance protocol fires when shared slots are added
801 * bug fix: fixed-format floating point printing with scaling factors.
803 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
804 backtraces. (lp#818460)
805 * bug fix: better backtraces for interrupted syscall frames on x86.
807 * bug fix: SSE comparison instructions can be disassembled even when one
808 operand is in memory. (lp#814702)
809 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
810 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
811 type information associated with the VALUES form.
812 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
814 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
815 first write (lp#561642).
816 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
817 * bug fix: bound propagation involving conversion of large bignums to
818 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
820 * bug fix: &REST to &MORE conversion still works in unsafe call to known
821 functions; reported by Lutz Euler (lp#826459).
822 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
825 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
826 * enhancement: errors from FD handlers now provide a restart to remove
827 the offending handler.
828 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
830 * enhancement: location of user or system initialization file can now easily
831 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
832 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
833 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
834 the thunk, as a keyword argument, :arguments.
835 * enhancement: constraint propagation is simplified (and sped up) when
836 COMPILATION-SPEED > SPEED.
837 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
838 * enhancement: debugger understands &MORE arguments better.
839 * optimization: extracting bits of a single-float on x86-64 has been
840 optimized. (lp#555201)
841 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
842 when (> SPEED SPACE).
843 * optimization: local call trampolines (x86 and x86-64) are emitted
845 * optimization: implicit value cells for dynamic-extent closed-over bindings
846 on x86 and x86-64 can hold unboxed values as well.
847 * meta-optimization: improved compilation speed, especially for large
848 functions. (lp#792363 and lp#394206)
849 * bug fix: bound derivation for floating point operations is now more
850 careful about rounding possibly closing open bounds. (lp#793771)
851 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
852 backwards incompatible change in 1.0.48.27)
853 * bug fix: occasional debugger errors in when a type-error occured in a
854 function with dynamic-extent &rest list.
855 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
856 boa-construtors can be used to initialized structure slots.
857 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
858 (lp#795705, regression)
859 * bug fix: DIRECTORY works better on logical pathnames.
860 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
861 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
862 * bug fix: the compiler no longer constant-folds NaNs in
863 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
864 * bug fix: FORMAT now handles floating point rounding correct, eg.
865 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
867 * bug fix: style warning during lambda-list introspection of generic
868 functions with both optional and key argments.
869 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
871 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
874 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
875 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
876 interrupts for its body.
877 * enhancement: source locations are now available for files loaded as
878 source, compile-time-too evaluation, and initialization files.
879 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
880 virtual source-file information, eg. overriding input-file of COMPILE-FILE
881 when a temporary file is used for compilation.
882 * enhancement: ASDF has been updated to version 2.015.3.
883 * enhancement: backtraces involving frames from the default evaluator are
885 * enhancement: RUN-PROGRAM works with user-defined binary input and output
887 * enhancement: more informative compile-time warnings and runtime errors for
888 type-errors detected at compile-time.
889 * enhancement: deadlock detection for mutexes and spinlocks.
890 * enhancement: dynamic-extent for &rest lists stack allocate only their
891 spines, not their argumets. While portable code should not rely on this,
892 particularly in combination with inlining, it should make dynamic-extent
893 easier to use safely.
894 * enhancement: SB-POSIX improvements:
895 ** WNOHANG and WUNTRACED are exported.
896 ** SYSCALL-ERROR now also provides the name of the failing system call.
897 * enhancement: --script improvements:
898 ** errors on standard input, output, and error streams are handled and
899 cause scripts to exit silently, making them easier to use in shell
901 ** backtraces from scripts now go to standard error instead of the
902 terminal even if one is available.
903 ** --script can be an argument, causing the script to be loaded from
905 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
906 strings to foreign memory.
907 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
908 a file, making it easier to understand heap dynamics.
909 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
910 allows the compiler to automatically elide rest-list allocation so long as
911 the call sites are in functions that the compiler knows cannot escape.
913 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
914 especially in safe code when none of the required arguments have changed
916 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
917 uninterruptible, as well as blocking reads from socket streams created
918 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
919 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
920 from the to-char if the from-char is not a dispatch-macro character.
921 * bug fix: references to undefined variables in function calls that are
922 optimized away now signal a runtime error. (lp#722734)
923 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
924 types from a function defined in the same file. (regression from
926 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
928 * bug fix: spurious errors during QUIT when standard streams were closed.
930 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
931 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
932 years, is now no longer supported.
933 * enhancement: read() and write() have been added to SB-POSIX.
934 * enhancement: types of DEFSTRUCT constructors are proclaimed more
935 accurately, allowing better typechecking of call-sites.
936 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
937 are no longer caught. (reverted to pre 1.0.34 behaviour)
938 * optimization: slightly faster ISQRT. (lp#713343)
939 * bug fix: better support for Solaris /bin/sh in sh-based tests.
940 * bug fix: TRACE behaves better when attempting to trace undefined
941 functions. (lp#740717)
942 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
943 to (FUNCALL #'(LAMBDA ...) ...).
944 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
945 a compile-time error. (lp#720382)
946 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
948 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
949 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
950 optimization. (regression from 1.0.45.18/1.0.46.15)
951 * bug fix: package locks did not protects against compile-time side-effects
952 of DEFUN. (lp#675584)
953 * bug fix: --dynamic-space-size argument is validated more carefully.
955 * bug fix: memory fault from printing a malformed simple-condition.
957 * bug fix: redefining classes so that slot-definition classes change now
958 engages the obsolete instance protocol. (lp#766271)
959 * bug fix: constant improper lists could break source coverage recording.
961 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
964 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
965 * bug fix: fix mach port rights leaks in mach exception handling code on
966 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
968 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
969 * enhancement: redefinition warnings for macros from different files. (lp#434657)
970 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
971 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
972 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
973 processed using EVAL -- now the appropriate toplevel form is reported instead.
974 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
975 declarations. (lp#726331)
976 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
977 that NIL/NULL is excluded from the type.
978 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
980 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
982 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
983 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
984 stack-allocated values out of their dynamic-extent. (lp#310175)
985 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
986 x86-64 builds caused a type-error.
987 * bug fix: calling COMPILE with something else than a lambda-expression as the
988 second argument reports a more sensible error. (lp#718905)
989 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
990 are detected. (lp#520607)
991 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
993 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
994 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
995 methods. (regression from 1.0.45.18)
996 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
997 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
998 * bug fix: several foreign functions accepting string also accepted NIL and
999 consequently caused a memory fault at 0 now signal a type-error instead.
1001 * bug fix: under rare circumstances, constraint propagation could rewrite a
1002 variable reference to refer to a variable not in scope, causing an error
1003 during physical environment analysis when attempting to close over the
1004 variable. (lp#551227)
1005 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1007 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1008 * enhancement: largefile support on Solaris.
1009 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1010 arguments (lp#710017)
1011 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1012 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1014 * optimization: ERROR and CERROR are approximately 5 times faster.
1015 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1016 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1017 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1018 up instance creation in those cases.
1019 * optimization: arithmetic operations with multiple constant arguments in now
1020 have them reduced at compile-time. (lp#676414)
1021 * optimization: determining current character position on string-streams for
1022 pretty-printing was overly slow.
1023 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1024 lifetime analysis to overwrite closed-over variables (lp#681092).
1025 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1026 were not handled correctly (lp#713063).
1027 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1029 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1030 mistake. (lp#667297).
1031 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1032 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1033 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1034 unintern the wrong symbol with the same name. (lp#693796)
1035 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1036 making it possible to restore the initial table if it has been messed up.
1039 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1040 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1041 Refer to documentation for details.
1042 * enhancement: ASDF has been updated to version 2.010.
1043 * optimization: mutated closed-over variables that are only accessed by
1044 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1045 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1046 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1047 * optimization: UNWIND-PROTECT cleanup functions are now declared
1049 * bug fix: backtracing function with &REST arguments now shows the full
1050 argument list. (lp#310173)
1051 * bug fix: return types for functions with complex lambda-lists are now
1052 derived properly (lp#384892)
1053 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1054 long string arguments slowed the compiler down to a crawl.
1055 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1056 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1057 in the DEFMETHOD body.
1058 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1059 messages, being instead replaced with the corresponding function name.
1060 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1061 operators. (lp#309448)
1063 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1064 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1065 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1066 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1068 * enhancement: default dynamic-space size can be configured at build-time
1069 without touching source, using the --dynamic-space-size argument to make.sh.
1070 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1071 qualities, and mentions ALWAYS-BOUND declarations.
1072 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1074 * enhancement: ASDF has been updated to 2.009.
1075 * enhancement: the system detects known type-erros in calls better,
1076 signalling a full warning about violated proclaimed FTYPEs and violations
1077 of derived FTYPEs within the same file, including self-calls.
1078 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1079 * optimization: constant-folding exploits numeric and character types, in
1080 addition member types.
1081 * optimization: numeric, character and member types that are inhabited by
1082 exactly one value are tested with EQL.
1083 * optimization: more conditional branches are eliminated during IR1.
1084 Branches are simplified before performing if/if-conversion, and simple
1085 equivalent branches (that only read the same constant or variable) are
1087 * improvements to the Windows port:
1088 ** change: canonical unparsing form for pathname namestrings now uses / as
1089 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1090 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1091 on Windows. (thanks to Kalyanov Dmitry)
1092 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1094 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1095 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1096 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1097 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1099 * bug fix: interrupts arriving during CL:OPEN caused an error.
1100 * bug fix: overeager character buffering could cause input to block
1101 spuriously when reading from a pipe (lp#643686)
1102 * bug fix: more efficient timer expiry should avoid starvation on systems
1103 where number of SIGALRMs per second is restricted. (lp#375515)
1104 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1105 * bug fix: compile-times no longer scale linearly with the size of
1106 quoted lists in source-code. (lp#654289)
1107 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1108 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1109 so badly. (lp#654485)
1110 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1111 an error for eg. STRUCTURE. (lp#458015)
1112 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1113 (lp#613871, thanks to Roman Marynchak)
1114 * bug fix: more reliable &REST list type derivation. (lp#655203)
1115 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1116 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1117 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1118 also declared NOTINLINE. (lp#655581)
1119 * bug fix: the compiler could attempt to emit constant left shifts of
1120 greater value than n-word-bits. (lp#309063)
1121 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1122 type information for the function being set. (lp#659220)
1123 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1124 containing self-calls were recompiled with a new signature, and failed
1125 to warn when a self-call using the old signature was left in. (lp#655126)
1126 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1127 :DEFAULT when the default external had character size other than 8 bits.
1129 * bug fix: derived types of functions in the same file were implicitly
1130 trusted, leading to potential heap corruption when those function were
1131 defined incompatibly. (lp#657499)
1132 * bug fix: existing ASDF source registries are ignored when building
1133 contribs (lp#659105)
1134 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1135 (lp#655824, thanks to Roman Marynchak)
1136 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1137 package-lock violation was detected. (lp#660752)
1138 * bug fix: the system can store different docstrings for a single function
1139 under different names. (lp#661631, regression from 1.0.29.24)
1140 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1141 properly. (lp#384801)
1142 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1143 of specified length could confuse the type derivation in unsafe code.
1145 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1146 fork with multiple Lisp threads running is made on every platform,
1147 not just Darwin. (lp#451111)
1148 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1149 around when core was saved, which could cause undefined behaviour when the
1151 * bug fix: Allow UNTRACE of functions that are no longer defined
1152 (lp#667657, thanks to Attila Lendvai)
1153 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1154 compile-time warning (lp#664373, thanks to Stas Boukarev)
1156 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1157 * incompatible change: FD-STREAMS no longer participate in the serve-event
1158 event-loop by default. (lp#316072)
1159 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1160 affects streams from CL:OPEN.
1161 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1162 default, but this is liable to change: applications needing serve-event
1163 for socket streams should explicitly request it using :SERVE-EVENTS T
1165 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1167 * enhancement: CLOS effective method functions and defclass slot typechecking
1168 function now have debug names for use in backtraces and profiles.
1169 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1171 * enhancement: symbols are printed using fully qualified names in several
1172 error and warning messages which are often associated with package
1173 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1174 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1175 thanks to Andrew Golding)
1176 * bug fix: reading /proc files on Linux works. (lp#425199)
1177 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1179 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1180 breaking code that tried to write the value of a printer control variable.
1181 (lp#581564, thanks to Stas Boukarev)
1182 * bug fix: WRITE compiler macro did not handle output stream designators
1183 correctly. (lp#598374, thanks to Stas Boukarev)
1184 * bug fix: better availability of names of foreign functions in backtraces
1185 on Linux. (lp#626962, thanks to Stas Boukarev)
1186 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1187 lp#627581, thanks to Josh Elsasser and Jim Wise)
1188 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1189 thanks to Josh Elsasser)
1190 * bug fix: using aliases for builtin classes as defmethod specializers
1191 without adding DEFTYPEs for them works. (lp#618387)
1192 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1194 * bug fix: legally dynamic-extent lists and vectors used as
1195 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1196 * bug fix: inline-expansion creating references to dead lambda-variables
1197 (lp#454681, thanks to Alexey Dejneka)
1198 * bug fix: better error message for bogus numerical arguments to RANDOM.
1199 (lp#598986, thanks to Stas Boukarev)
1200 * bug fix: the compiler occasionally inlined references from incompatible
1201 environments occurs. (lp#308951)
1202 * bug fix: the compiler threw an error when trying to compile a local
1203 function (labels or flet) known to take a specialized complex argument.
1204 (not in launchpad, reported by sykopomp in #lispgames)
1205 * bug fix: package-locks failed to protect against compile-time effects of
1206 DEFUN when the symbol previously had a macro definition. (lp#576637)
1207 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1208 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1209 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1210 * bug fix: evaluation in debugger REPL works using the global context when
1211 in frames that do not have sufficient debug information.
1212 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1214 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1216 * bug fix: interrupt taking longer than the requested period caused SLEEP
1217 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1219 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1221 ** Cross-compilation host is now specified to make.sh using
1222 command-line argument --xc-host=<command> instead of a positional
1223 argument. (thanks to Daniel Herring)
1224 ** Install location can be specified to make.sh using command-line
1225 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1226 * optimization: The default implementation of
1227 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1228 * enhancement: Explicit memory barrier operations are now available for use
1229 by multithreaded code. See documentation for details.
1230 * enhancement: Experimental support for threading on Linux/PPC.
1231 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1232 * bug fix: EXPT signals an error if first argument is a zero and second
1233 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1234 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1235 (lp#576594, thanks to Roman Marynchak)
1236 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1237 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1239 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1240 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1241 cached, leading to many fewer expensive calls to
1242 COMPUTE-APPLICABLE-METHODS.
1243 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1244 CLASS argument, search for and call an appropriate optimized ctor function
1246 * bug fix: WRITE always returns the correct value.
1248 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1249 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1250 * bug fix: Name conflicts between symbols passed as arguments to a single
1251 call to IMPORT no longer add multiple symbols with the same name to the
1252 package (detectable via DO-SYMBOLS).
1253 * bug fix: support building without the dlshim on darwin x86 and x86-64
1255 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1257 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1258 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1260 * bug fix: linkage-table entries on PPC now no longer overflow their
1261 space allocation (potentially causing crashes if they are written out
1263 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1264 platforms, preventing the GC from seeing stale pointers on the control
1265 stack in subsequent GCs (which would, and does, break invariants).
1266 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1267 * bug fix: Literal characters with code points greater than about 32767
1268 now work on PPC UNICODE builds.
1269 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1270 high order bits are explicitly cleared out. In some contrived situations,
1271 this could lead to wrong results in mixed real/complex float arithmetic.
1272 * bug fix: Fix function/macro redefinition warnings when building with
1273 clisp. (lp#576787, thanks to Josh Elsasser)
1274 * new platform: experimental support for ppc/openbsd (thanks to Josh
1276 * bug fix: Floating-point traps now work on ppc/linux.
1278 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1279 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1280 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1281 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1282 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1283 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1284 SB-THREAD:GRAB-MUTEX.
1285 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1286 contain additional data structures and tools for concurrent programming;
1287 at the moment it contains a lock-free queue, and a lock-free mailbox
1289 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1290 GET-MUTEX but takes &key rather than &optional parameters. Also added
1291 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1293 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1294 SB-THREAD:WAIT-ON-SEMAPHORE.
1295 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1297 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1298 conditions to defer the deadline for forever.
1299 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1301 * enhancement: errors from NO-APPLICABLE-METHOD and
1302 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1303 generic function call.
1304 * enhancement: SB-BSD-SOCKET improvements
1305 ** sockets and socket streams now have a more informative printed
1306 representation based on the corresponding SOCKET-NAME and
1308 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1310 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1311 CL:CLOSE when appropriate, and no longer disassociates the stream
1312 from the socket if close failed. (lp#543951)
1313 * improvements to the instrumenting profiler
1314 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1315 ** optimization: counters no longer use locks for the overflow mode.
1316 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1317 incurred an off-by-one miscount.
1318 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1319 * enhancement: improved DEFMETHOD pretty-printing.
1320 * enhancement: perform range reduction when arguments are too large for
1321 x87's transcendentals (instead of returning 0). (lp#327192)
1322 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1323 some of CL-PPCRE's macros. (lp#570079)
1324 * enhancement: our machine code is slightly less hostile to valgrind on
1326 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1327 to Robert Swindells and Aleksej Saushev)
1328 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1329 * bug fix: a rare case of startup-time page table corruption.
1330 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1331 to timeouts could be left in an inconsistent state.
1332 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1333 * bug fix: misoptimization of multiplication by one in
1334 (SB-C::FLOAT-ACCURACY 0) policies.
1335 * bug fix: miscounts in SB-PROFILE.
1336 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1337 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1338 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1339 up itself" (March 2010) for further details.
1340 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1341 against length of the list if the element is found before the specified
1342 END is reached. (thanks to Alec Berryman, lp#554385)
1343 * bug fix: errors signalled during package graph modification no longer
1344 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1345 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1346 :SB-DOC feature. (lp#552564)
1347 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1348 * bug fix: more robust runtime executable path detection. (lp#375549)
1349 * bug fix: GCD always returns positive values. (lp#413680)
1350 * bug fix: Converting division to multiplication by reciprocal handles
1352 * bug fix: We were too eager in eliding range reduction tests on x87.
1353 The maximal magnitude is 2^63, not 2^64.
1354 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1356 * bug fix: Maybe restore buildability on Alpha.
1357 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1359 * bug fix: RANDOM-STATE can be printed readably again.
1360 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1361 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1362 types) could result in type mismatches during compilation.
1364 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1365 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1366 stack frame thrown from.
1367 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1368 compiler optimization qualities inside dynamic extent of its body.
1369 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1370 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1372 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1373 constraint propgation, allowing better compilation eg. when used to
1374 access structures with WITH-SLOTS. (lp#520366)
1375 * optimization: the compiler is now more aware of the type of the underlying
1376 storage vector for multidimensional simple arrays resulting in better code
1377 for accessing such arrays.
1378 * optimization: passing NIL as the environment argument to TYPEP no longer
1379 inhibits optimizing it. (lp#309788)
1380 * optimization: more efficient register usage when handling single-float
1381 arguments on x86-64. (thanks to Lutz Euler)
1382 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1383 pre-allocated temporary vectors. (lp#496249)
1384 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1385 in :INITIAL-CONTENTS. (lp#523612)
1386 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1387 functions. (lp#524707)
1388 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1389 WITH-SLOTS usages during compilation.
1390 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1391 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1392 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1393 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1394 instruction (tested on x86oid linux with ud2-breakpoints).
1395 * bug fix: slam.sh now works on win32.
1396 * bug fix: better differences of numeric types. (lp#309124)
1397 * bug fix: arrays declared intersection and union types can have their
1398 upgraded element type derived. (lp#316078)
1399 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1400 threads started during profiling. (lp#472499)
1401 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1403 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1404 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1405 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1406 values instead of signaling an error. (lp#309093)
1407 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1409 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1410 declarations (lp#497321)
1411 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1412 and failed to detect circular lists (lp#452008)
1413 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1415 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1416 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1417 due to it, so that handlers can run.
1418 * bug fix: reparsing undefined types if they have become defined since
1419 parsing. (lp#309128)
1420 * bug fix: missing &REST type in a proclamation for a function with both
1421 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1422 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1423 expanded calls (lp#542174)
1424 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1425 than just at toplevel form.
1427 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1428 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1429 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1430 but work on type specifiers.
1431 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1432 to name a type specifier.
1433 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1434 specifier is valid where "valid" basically means "would be accepted as
1435 second argument of TYPEP".
1436 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1437 returns the function's declared, or derived FTYPE.
1438 * new feature: SB-POSIX now supports accessing the d_ino member of
1439 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1440 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1441 provide for seeding a RANDOM-STATE object with user-provided data or
1442 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1443 attempt to initialize the returned state from the operating system's
1444 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1445 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1446 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1447 * bug fix: Fix grammar and style issues for the docstrings of
1448 printer-related variables and functions. (Thanks to mon_key; launchpad
1450 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1452 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1453 in a row even though a handler defered the deadline long into the
1455 * bug fix: A deadline handler was run without interrupts enabled for a
1456 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1457 in infinitely spinning, non-killable threads.
1458 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1459 before reaching the erring stack frame.
1460 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1461 real power. (launchpad bug lp#525949)
1462 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1463 GENCGC platforms. (launchpad bug lp#529014)
1464 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1465 (launchpad bug lp#525916)
1466 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1467 (Thanks to Robert Goldman)
1469 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1470 * optimization: ROUND with a single single-float or double-float argument
1471 is properly inlined when possible.
1472 * optimization: Slightly better code is generated for integer<->float
1473 conversions and for single-float<->double-float conversions on x86-64.
1474 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1475 code for 32-bit and 64-bit rotations on x86-64.
1476 * bug fix: The install script changes the ownership of directories as well
1477 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1478 launchpad bug lp#508485)
1479 * bug fix: TRUNCATE with a single single-float or double-float argument is
1480 properly inlined when possible. (launchpad bug lp#489388)
1481 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1482 no longer causes a compiler error on x86 and ppc.
1483 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1484 always relative to *READTABLE* rather than the passed argument.
1486 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1487 * minor incompatible change: threading support is now enabled by default
1489 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1491 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1492 are now caught and reported just like errors during macroexpansion.
1493 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1494 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1495 * enhancement: ASDF systems can now depends on SB-QUEUE.
1496 * fixes and improvements related to Unicode and external formats:
1497 ** bug fix: error handling and restart usage in the ucs-2 external format
1499 ** there is now an implementation of the ucs-4 external format.
1500 ** the utf-16 and utf-32 external formats are supported.
1501 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1502 in the environment. setenv() and unsetenv() are also provided. (reported by
1503 Fare Rideau; launchpad bug lp#460455)
1504 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1505 loading. This ensures sensible errors for .FASL files from other
1506 implementations on case-insensitive filesystems. (reported by Willem
1507 Broekema; launchpad bug lp#489417)
1508 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1509 Willem Broekema; launchpad bug lp#489698).
1510 * bug fix: some minor code rearrangements to reenable warning-free building
1511 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1512 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1514 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1517 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1518 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1519 * improvement: support O_LARGEFILE access to files larger than 2GB on
1520 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1521 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1522 definitions for methods specializing on the passed class itself.
1523 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1524 definitions for methods specializing on the passed class itself, or on
1526 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1527 about itself during the build (e.g. for M-? in Slime), if this flag is
1528 enabled in customize-target-features.lisp. This will increase the core
1529 size by about 5-6mb, though, so it's mostly interesting to SBCL
1531 * new feature: various GENCGC tuning parameters have been experimentally
1532 documented and exported from SB-EXT. See documentation for details.
1533 * fixes and improvements related to Unicode and external formats:
1534 ** the Unicode character database has been upgraded to the
1535 Unicode 5.2 standard, giving names and properties to a number of new
1536 characters, and providing a few extra characters with case
1538 ** improvement: restarts for providing replacement input/output on coding
1539 errors for fd-stream external formats.
1540 ** improvement: where :<encoding> is a keyword corresponding to an
1541 external format the system supports, it is now possible to specify
1542 (:<encoding> :replacement <character>) as an external format which will
1543 automatically substitute <character> on encoding or decoding errors for
1544 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1546 ** improvement: the file streams underlying the standard streams (such as
1547 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1548 which uses the replacement mechanism to handle encoding errors,
1549 preventing various infinite error chains and unrecoverable I/O
1551 ** minor incompatible change: the utf-8 external format now correctly
1552 refuses to encode Lisp characters in the surrogate range (char-codes
1553 between #xd800 and #xdfff).
1554 ** fix a typo preventing conversion of strings into octet vectors
1555 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1557 ** fix a bug in the octet multibyte handling of decoding errors and the
1558 USE-VALUE restart. (launchpad bug lp#314939)
1559 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1560 restart on fd-stream decoding errors.
1561 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1562 error is near the end of file.
1563 ** fix a double-error case in unibyte octet conversions, when the first
1564 use of USE-VALUE is ignored.
1565 ** fix bugs in handling of undefined code points in unibyte encodings.
1566 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1567 streams after an UNREAD-CHAR.
1568 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1569 object is allocated in a boxed region of dynamic space.
1570 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1571 fork with multiple Lisp threads running is made, instead of going
1572 ahead with unpredictable consequences. (reported by Leslie Polzer)
1573 * bug fix: uses of slot accessors on specialized method parameters within
1574 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1575 error while finalizing the class. This fix may cause classes with slot
1576 accessors to be finalized later than previously. (reported by Lars Rune
1577 Nøstdal; launchpad bug lp#473699)
1578 * bug fix: restore buildability on the MIPS platform. (regression from
1579 1.0.30.38, reported by Samium Gromoff)
1580 * bug fix: inspecting closures is less likely to fail with a type error.
1581 * bug fix: no timer starvation when setting the system clock back.
1582 (launchpad bug lp#460283)
1583 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1584 standard pprint dispatch table as specified by CLHS.
1585 * bug fix: give CLISP a hint about a type declaration to enable it to build
1586 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1588 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1589 (reported by Attila Lendvai; launchpad bug lp#310132)
1590 * bug fix: distinguish in type specifiers between arrays that might be
1591 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1592 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1593 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1594 * bug fix: setting the value of a symbol-macro within a method in the
1595 presence of type declarations works properly again. (reported by Iban
1596 Hatchondo; launchpad bug lp#485019)
1598 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1599 * optimization: faster FIND and POSITION on strings of unknown element type
1600 in high SPEED policies. (thanks to Karol Swietlicki)
1601 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1603 * improvement: better error signalling for bogus parameter specializer names
1604 in DEFMETHOD forms (reported by Pluijzer)
1605 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1607 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1609 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1610 removes previous default initargs (reported by Lars Rune Nøstdal and
1612 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1613 lambda-lists. (reported by Peter Seibel)
1614 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1615 correctly when starting from an executable core without saved runtime
1616 options (reported by Faré Rideau, thanks to Zach Beane)
1617 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1618 an optimization note instead. (reported by Martin Cracauer)
1619 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1620 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1621 new process group if it doesn't need to share stdin with the sbcl
1622 process. (thanks to Leslie Polzer)
1623 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1624 (reported by Stanislaw Halik)
1626 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1627 * improvement: stack allocation is should now be possible in all nested
1628 inlining cases: failure to stack allocate when equivalent code is manually
1629 open coded is now considered a bug.
1630 * improvements related to Unicode:
1631 ** the Unicode character database has been upgraded to the
1632 Unicode 5.1 standard, giving names and properties to a number of new
1633 characters, and providing a few extra characters with case
1635 ** the system now recognizes and produces names for Unicode Hangul
1636 syllable characters.
1637 ** the EBCDIC-US external-format is now supported for octet operations
1638 (as well as for stream operations).
1639 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1640 be used to output toplevel compile-time effects into a separate .CFASL
1642 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1643 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1645 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1647 * optimization: division of floating point numbers by constants uses
1648 multiplication by reciprocal when an exact reciprocal exists.
1649 * optimization: multiplication of single- and double-floats floats by
1650 constant two has been optimized.
1651 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1652 sufficient type information is available. (thanks to Leslie Polzer)
1653 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1654 known structure objects are as efficient as defstruct generated accessors.
1655 * optimization: unused vector creation can now be optimized away.
1656 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1657 * improvement: a STYLE-WARNING is signalled when a generic function
1658 clobbers an earlier FTYPE proclamation.
1659 * improvement: the compiler is able to track the effective type of
1660 generic function across method addition and removal even in the
1661 absence of an explicit DEFGENERIC.
1662 * improvement: DESCRIBE now reports on symbols naming undefined
1663 but assumed or declared function as well.
1664 * improvement: recompilation of systems using SB-GROVEL now works
1665 (thanks to Leslie Polzer)
1666 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1667 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1669 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1670 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1671 well as user defined declaration names.
1672 ** VARIABLE-INFORMATION is now aware of alien variables.
1673 * improvement: improved address space layout on OpenBSD (thanks to Josh
1675 * improvement: pretty-printing of various Lisp forms has been improved
1676 (thanks to Tobias Rittweiler)
1677 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1678 unused were deleted in safe code. (reported by John Fremlin)
1679 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1681 * bug fix: some out-of-line array predicates were missing (reported by
1683 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1685 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1686 (thanks to Larry D'Anna)
1687 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1688 as well. (reported by Josh Elsasser)
1689 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1690 leading to possible attempts to delete the same file twice. See docstring
1691 on DELETE-FILE for details. (reported by John Fremlin)
1692 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1693 designator argument, rather than its truename. (reported by Luis
1695 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1696 information about some array types. (thanks to Luis Oliveira)
1697 * bug fix: moderately complex combinations of inline expansions could
1698 be miscompiled if the result was declared to be dynamic extent.
1699 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1700 form (+ <variable> <integer>) were miscompiled under certain
1702 * bug fix: in some cases no compiler note about failure to stack allocate
1703 was emitted, even if the objects were in fact heap allocated.
1704 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1705 allocation could cause objects users might reasonably expect to
1706 be heap allocated to be stack allocated.
1707 * bug fix: DESCRIBE signalled an error for generic functions under
1708 certain circumstances. (thanks to Leslie Polzer)
1709 * bug fix: Fixed spelling of an error message.
1711 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1712 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1713 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1714 of SB-THREAD:THREAD-ERROR-THREAD.
1715 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1716 * new feature: docstrings for local and anonymous functions are no longer
1717 discarded. (thanks to Leslie Polzer)
1718 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1719 values in other threads.
1720 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1721 about object allocation.
1722 * optimization: division of a real float by a complex float is implemented
1723 with a specialised code sequence.
1724 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1725 keywords is an order of magnitude faster.
1726 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1727 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1728 methods, and similarly for non-standard metaclass classes as long as there
1729 are no methods additional on MAKE-INSTANCE.
1730 * optimization: more efficient type-checks for FIXNUMs when the value
1731 is known to be a signed word on x86 and x86-64.
1732 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1733 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1735 * optimization: compiler is smarter about delegating argument type checks to
1737 * optimization: several character functions are now compiled somewhat more
1738 efficiently. (reported by Lynn Quam)
1739 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1740 * improvement: less unsafe constant folding in floating point arithmetic,
1741 especially for mixed complex/real -float operations.
1742 * optimization: constant double and single floats are stored in native
1743 unboxed format on x86[-64].
1744 * optimization: smarter code for arithmetic operations with constant floats,
1745 complex floats, or integers on x86[-64].
1746 * optimization: smarter code for conjugate/multiplication of float complexes
1747 and abs/negate of floats on x86-64.
1748 * optimization: more efficient complex float and real float operations on
1750 * improvement: complex float division is slightly more stable.
1751 * improvement: DESCRIBE output has been reworked to be easier to read and
1752 contains more pertinent information.
1753 * improvement: failure to provide requested stack allocation compiler notes
1754 provided in all cases (requested stack allocation not happening without a
1755 note being issued is now considered a bug.)
1756 * bug fix: SB-POSIX exports the documented types and functions
1757 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1758 types. (reported by "abhi")
1759 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1760 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1761 (thanks to Paul Khuong)
1762 * bug fix: looping around HANDLER-CASE could silently consume stack space
1763 on each iteration. (reported by "foobar")
1764 * bug fix: better error signalling when calls to functions seeking elements
1765 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1766 (reported by Tobias Rittweiler)
1767 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1768 directory components now works as it used to. (various prolems reported by
1769 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1770 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1771 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1772 * bug fix: bogus undefined variable warnings from fopcompiled references to
1773 global variables. (thanks to Lars Rune Nøstdal)
1774 * bug fix: foreign function names should now appear in backtraces on
1775 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1776 * bug fix: SETF compiler macro documentation strings are not discarded
1778 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1779 (thanks to Alex Plotnick)
1780 * bug fix: SLEEP accepts large integer arguments, truncating them to
1781 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1782 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1783 * bug fix: compiler notes for expensive slot type checks could be emitted
1784 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1786 changes in sbcl-1.0.29 relative to 1.0.28:
1787 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1788 https://bugs.launchpad.net/sbcl
1789 Bugs can be reported directly there, or by sending email to
1790 sbcl-bugs@lists.sourceforge.net
1791 (no subscription required.)
1792 * minor incompatible change: under weak type checking policy integer
1793 types are weakened less aggressively.
1794 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1795 allowed to return, which causes SBCL to quit with exit status 0. Previously
1796 if the function returned with a small integer return value, that value
1797 was accidentally reused as the exit status.
1798 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1799 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1800 :HASH-FUNCTION argument. Refer to user manual for details.
1801 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1803 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1804 microseconds since the Unix epoch on all platforms.
1805 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1806 allows the compiler to safely elide boundedness checks for special
1808 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1809 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1810 efficiency measure for threaded platforms, but also valueable in
1812 * new feature: UNC pathnames are now understood by the system on Windows.
1813 * optimization: the compiler uses a specialized version of FILL when the
1814 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1816 * optimization: accesses to potentially non-simple arrays where element type
1817 is known are 50% faster.
1818 * optimization: compiler now generates faster array typechecking code.
1819 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1821 * optimization: multidimensional array accesses in the absence of type
1822 information regarding array rank are approximately 10% faster due to
1823 open coding of ARRAY-RANK.
1824 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1825 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1827 * optimization: result of call to VECTOR can now be stack allocated.
1828 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1829 as long as the resulting array is one-dimensional and has a known
1830 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1831 length of the list matches the known length of the vector does not
1832 allocate the list as an intermediate step. Ditto for VECTOR and simple
1834 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1835 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1836 known element type, and is known to be simple and one dimensional.
1837 * improvement: SBCL now emits a compiler note where stack allocation was
1838 requested but could not be provided (not in all cases, unfortunately)
1839 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1840 * improvement: pretty-printing loop has been implemented properly. (thanks
1841 to Tobias Rittweiler)
1842 * documentation: CLOS slot typechecing policy has been documented.
1843 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1844 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1845 pointer, leading to memory faults. (thanks to Bart Botta)
1846 * bug fix: better floating point exception handling on x86/OpenBSD.
1847 (thanks to Josh Elsasser)
1848 * bug fix: exit status from QUIT when called under --script was lost
1849 (reported by Hubert Kauker)
1850 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1851 same implementation of FILL to initialize the array, even if a more
1852 efficient one was available (reported by Stas Boukarev, thanks to
1854 * bug fix: potential miscompilation of array stack allocation on x86 and
1855 x86-64. (reported by Time Tossavainen)
1856 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1857 result in their subforms being treated as top level forms. (reported by
1859 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1860 than a machine register could leave garbage in the high bits of the
1861 result register (bug 316325).
1862 * bug fix: disable address space randomization Linux/x86-64 as well,
1863 not just x86-64. (reported by Ken Olum)
1864 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1865 generate incorrect code.
1866 * bug fix: #201; type inference for CONS and ARRAY types could derive
1867 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1868 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1869 could not be assigned to or bound with PROGV. (reported by Lorenz
1871 * bug fix: the value of CL:- in the inspector was the previous expression
1872 evaluated rather than the expression being evaluated.
1873 * bug fix: constants can no longer be locally declared special.
1874 * bug fix: signals delivered to threads started from foreign land (read:
1875 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1876 thread by blocking all signals and resignalling.
1877 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1878 from :INITFORM, if any.
1880 changes in sbcl-1.0.28 relative to 1.0.27:
1881 * a number of bugs in cross-compilation have been fixed, with the ultimate
1882 result that building under (at least) clisp should be much more reliable.
1883 * minor incompatible changes: echo-streams now propagate unread-char to the
1884 underlying input stream, and no longer permit unreading more than one
1886 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1887 frames, allowing for instance more reliable backtraces.
1888 * improvement: the debugger REPL can now reference lexical variables
1889 by name directly for code compiled with (DEBUG 3).
1890 * improvement: errors from malformed declarations now have better source
1891 paths associated with them. (thanks to Tobias Rittweiler)
1892 * optimization: faster local calls on x86/x86-64
1893 * bug fix: some error messages for out-of-bound array indexes confused the
1894 index and the bound. (thanks to Stas Boukarev)
1895 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1897 * bug fix: running regressions tests in shells without OSTYPE set now works.
1898 (reported by Harald Hanche-Olsen)
1899 * bug fix: more robust static space exhaustion signalling from
1900 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1901 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1902 docstring away instead of storing it under names such as (LAMBDA (X)).
1903 (reported by Leslie Polzer)
1904 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1905 (thanks to Ole Arndt for the patch)
1906 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1907 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1908 potentially-invalid effective methods in its cache.
1909 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1910 instances as well (thanks to Paul Khuong)
1911 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1912 SB-POSIX:WAITPID and their C equivalents.
1913 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1915 changes in sbcl-1.0.27 relative to 1.0.26:
1916 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1917 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1918 * improvement: the system either recovers from stack exhaustion or dies
1919 properly as opposed to leaving the user uncertain of whether the handler
1920 trampled on some random memory next to the stack or having to rely on
1921 --lose-on-corruption (which is still a good idea to use in production
1922 because stack exhaustion can happen in signal handlers which will likely
1924 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1925 1.0.25.37, reported by Harald Hanche-Olsen)
1926 * bug fix: work around signal delivery bug in darwin (regression from
1927 1.0.25.44, reported by Sidney Markowitz)
1928 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1930 changes in sbcl-1.0.26 relative to 1.0.25:
1931 * incompatible change: an interruption (be it a function passed to
1932 INTERRUPT-THREAD or a timer function) runs in an environment where
1933 interrupts can be enabled. The interruption can use
1934 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1935 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1936 potentially running out of stack. Keep in mind that in the absence
1937 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1938 acquiring a lock can enable interrupts.
1939 * incompatible change: GC-OFF and GC-ON are removed, as they were
1940 always unsafe. Use WITHOUT-GCING instead.
1941 * new feature: runtime option --disable-ldb
1942 * new feature: runtime option --lose-on-corruption to die at the
1943 slightest hint of possibly non-recoverable errors: running out of
1944 memory, stack, alien stack, binding stack, encountering a memory
1945 fault, etc. In the absence of --lose-on-corruption a warning is
1947 * enhancement: detect binding stack exhaustion
1948 * enhancement: detect alien stack exhaustion on x86/x86-64
1949 * improvement: generally more stable and reliable interrupt handling
1950 * improvement: there is a per thread interruption queue,
1951 interruptions are executed in order of arrival
1952 * improvement: a repeating timer reschedules itself when the it has
1953 finished, but expiration times are spaced equally. If an
1954 expiration time is in the past it will trigger after a short grace
1955 period that may give a chance to other things to run.
1956 * optimization: slightly faster gc on multithreaded builds
1957 * optimization: faster WITHOUT-GCING
1958 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1959 important locks so that the debugger/handler doesn't produce
1960 recursive errors or deadlock.
1961 * bug fix: real-time signals are not used anymore, so no more
1962 hanging when the system wide real-time signal queue gets full.
1963 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1965 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1966 * bug fix: fix random memory faults related to interrupts on alpha
1967 * bug fix: fix random memory faults related to interrupts on sparc
1968 * bug fix: fix deadlocks related to starting threads
1969 * bug fix: fix deadlines on locks on futex platforms
1970 * bug fix: restore errno in signal handlers
1971 * bug fix: fix deadlocks related to hash tables
1972 * bug fix: fix deadlocks in pcl
1974 changes in sbcl-1.0.25 relative to 1.0.24:
1975 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1976 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1977 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1978 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1979 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1980 better name and does not return values so stale on multiprocessor systems.
1981 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1983 * improvement: unithread builds keep track of MUTEX-VALUE.
1984 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1985 stream anymore making it thread safe to have a concurrent reader and
1986 a writer, for instance, in a pipe.
1987 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1988 arguments, making compiler-macros for SETF-functions able to inspect
1989 their constant arguments.
1990 * improvement: COMPILE-FILE reports times with millisecond accuracy
1991 (thanks to Luis Oliveira)
1992 * optimization: CHAR-CODE type derivation has been improved, making
1993 TYPEP elimination on subtypes of CHARACTER work better. (reported
1994 by Tobias Rittweiler, patch by Paul Khuong)
1995 * bug fix: setting alien structure fields of type struct by value now
1996 computes the right offset for the memory copy.
1997 * bug fix: compilation problem involving inlined calls to aliens with
1998 result type VOID. (reported by Ken Olum)
1999 * bug fix: #235a; sequential inline expasion in different policies no
2000 longer reuses the functional from the previous expansion site.
2001 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2002 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2003 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2004 cause an implied type redefinition. Regression from 1.0.21.29.
2005 * bug fix: sign-extension of small signed return values now works with C
2006 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2007 * improvements to the Windows port:
2008 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2009 Westfold, thanks to Rudi Schlatte)
2011 changes in sbcl-1.0.24 relative to 1.0.23:
2012 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2013 vector of a multidimensional SIMPLE-ARRAY.
2014 * new feature: the system now signals a continuable error if standard
2015 readtable modification is attempted. (thanks to Tobias Rittweiler)
2016 * new feature: DIRECTORY has been extended with a non-standard keyword
2017 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2018 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2019 has been robustified and documented better. (thanks to Robert Goldman)
2020 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2021 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2022 * tradeoff: constant FORMAT control strings are now compiled unless
2023 SPACE > SPEED (previously only when SPEED > SPACE.)
2024 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2026 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2028 * bug fix: lexical type declarations are now correctly reported by
2029 SB-CLTL2. (reported by Larry D'Anna)
2030 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2031 using UTF-8 as external format. (thanks to Luis Oliveira)
2032 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2033 are signalled correctly. (thanks to Stas Boukarev)
2034 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2035 designator. (thanks to Tobias Rittweiler)
2036 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2037 designator, and returns T instead of the function. (thanks to
2039 * bug fix: direct superclasses of STANDARD-CLASS and
2040 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2041 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2042 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2043 when no class with the named slot yet exists no longer causes a
2044 compile-time style-warning.
2045 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2046 in safe code. (reported by Didier Verna)
2047 * bug fix: #430; nested structure constructors can stack allocate.
2048 * bug fix: on some 64-bit platforms dynamic space size was truncated
2049 to #xffff0000 bytes. (reported by Benjamin Lambert)
2050 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2051 REPL unusable. (reported by Daniel Herring)
2052 * bug fix: return values of READ-SEQUENCE did not take :START into
2053 account on file streams, regressions since 1.0.12.22. (reported by
2054 Thomas Russ, patch by Paul Khuong)
2055 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2056 method specializer used to confuse permuation vector optimization.
2057 * bug fix: system inserted bogus implicit type declarations for local
2058 special variables in DEFMETHOD bodies.
2059 * bug fix: #354; duplicated frames in backtraces due to
2060 non-tail-call-optimized XEPs to functions with return type NIL
2062 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2063 initializes structure object slots according to DEFSTRUCT initforms,
2064 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2065 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2066 (reported by Bruno Haible and Stephen Wilson)
2067 * bug fix: #395; fill-pointer output streams used now support
2068 element-type BASE-CHAR as well.
2069 * bug fix: compiler error when attempting to derive return value of
2070 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2072 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2074 * bug fix: Mac OS X binaries should now be portable between Leopard
2077 changes in sbcl-1.0.23 relative to 1.0.22:
2078 * enhancement: when disassembling method functions, disassembly
2079 for the associated fast function is also produced.
2080 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2082 * optimization: printing with *PRINT-PRETTY* true is now more
2083 efficient as long as the object being printed doesn't require
2084 special handling by the pretty printer.
2085 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2086 now interact correctly with type declarations.
2087 * partial bug fix: PCL detects infinite recursion during wrapper
2088 validation. (thanks to Attila Lendvai)
2089 * bug fix: #426; nested function calls are inlined properly.
2090 Previously if FOO was an inline function, in calls of the form
2091 (FOO (FOO ...)) the outer call was not inlined.
2092 * bug fix: long long arguments passed in registers to alien
2093 functions on PowerPC Linux and NetBSD are now handled correctly
2094 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2096 changes in sbcl-1.0.22 relative to 1.0.21:
2097 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2098 for the shared object in the current directory, but passes the native
2099 namestring of the designated pathname to the operation system's shared
2100 object loading function as-it.
2101 * minor incompatible change: --disable-debugger toplevel option now takes
2102 effect before processing of initialization files and --eval or --load
2104 * new feature: new commandline argument: --script, which supports
2105 shebang lines. See documentation for details. (based on work by
2107 * new feature: SAVE-LISP-AND-DIE can save current values of
2108 --dynamic-space-size and --control-stack-size in the executable core,
2109 causing it to skip normal runtime option processing. See documentation
2110 for details. (thanks to Zach Beane)
2111 * enhancement: inoccous calls to EVAL or generic functions dispatching
2112 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2113 * enhancement: the system no longer resignals errors from --load and
2114 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2115 associated with the original error to be lost. (thanks to Ariel
2117 * enhancement: :DONT-SAVE keyword argument has been added to
2118 LOAD-SHARED-OBJECT for controlling interaction with
2119 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2120 the effects of an earlier LOAD-SHARED-OBJECT call.
2121 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2122 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2123 provided. (reported by Cedric St-Jean)
2124 * bug fix: circularity handling in the reader did not treat raw
2125 structure slots correctly. (reported by Cedric St-Jean)
2126 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2127 file descriptors when there were none.
2128 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2129 was broken. (reporteed by Willem Broekema)
2130 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2131 pathnames without a directory.
2132 * bug fix: COMPILE-FILE did not warn about undefined variable
2133 references at toplevel, and LOAD of the resulting fasl did
2134 not signal an error.
2135 * bug fix: functions with non-required arguments used to end up with
2136 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2137 * bug fix: redefining a function with non-required arguments didn't
2138 update the system's knowledge about its call signature properly.
2139 * bug fix: fixed #431; incompatible alien record type redefinitions
2140 are detected and handled. (reported by Neil Haven)
2141 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2142 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2144 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2145 after alien stack frames.
2146 * bug fix: strings passed to mk{s,d}temp lacked null termination
2148 changes in sbcl-1.0.21 relative to 1.0.20:
2149 * new feature: the compiler is able to track the effective type of a
2150 generic function across method addition and removal.
2151 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2152 appropriately typed structure slots without locking.
2153 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2154 information like those gathered by TIME using a programming-friendly
2156 * new feature: TIME reports time taken even if the form performs a
2157 non-local transfer of control.
2158 * enhancement: reduced conservativism on GENCGC platforms: on
2159 average 45% less pages pinned (measured from SBCL self build).
2160 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2161 mutate constant symbols or violate declaimed type of the symbol.
2162 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2163 sleeping on the semaphore in heavily contested semaphores.
2164 * bug fix: semaphores and condition variables were not interrupt
2166 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2167 owned by other threads anymore.
2168 * bug fix: FIND on lists called KEY outside the specified
2169 subsequence. (reported by budden)
2170 * bug fix: LOG doesn't use single-float intermediate results when
2171 given mixed integer and double-float arguments, leading to better
2172 precision. (reported by Bob Felts)
2173 * bug fix: LOG with base zero returned values of inconsistent type.
2175 changes in sbcl-1.0.20 relative to 1.0.19:
2176 * minor incompatible change: OPTIMIZE qualities
2177 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2178 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2179 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2180 * documentation: some slot access efficiency guidelines have been
2181 added to the user manual.
2182 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2183 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2184 as ASSOC and MEMEBER.
2185 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2186 to more efficient EQ-comparison versions more often.
2187 * optimization: enhanced derivation of DOLIST iteration variable type
2189 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2191 * optimization: runtime lookup of function definitions can be
2192 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2193 * optimization: compiler is able to derive the return type of
2194 (AREF (THE STRING X) Y) as being CHARACTER.
2195 * optimization: CLRHASH on empty hash-tables no longer does pointless
2196 work. (thanks to Alec Berryman)
2197 * optimization: REPLACE deftransforms don't punt when :START1 or
2199 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2200 no longer emits a code deletion note. (reported by Andrew
2202 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2203 functions with an odd number of &OPTIONAL arguments, a &REST
2204 argument, and one or more &KEY arguments at the call site.
2205 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2206 arguments appeared at call sites as well.
2207 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2208 READ-LINE &co can no longer read from them afterwards. (reported
2210 * bug fix: fixed #427: unused local aliens no longer cause compiler
2211 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2213 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2214 alien-stack leakage. (reported by Andy Hefner)
2215 * bug fix: PROGV signals an error when an attempt to violate declared
2216 type of a variable or bind a constant is made.
2217 * bug fix: SET signals an error when an attempt to violate declared
2218 type of a variable is made.
2219 * bug fix: restart computation during the execution of a restart
2220 test function no longer causes infinite recursion. (reported by
2222 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2223 signals an error. (thanks to Pierre Mai)
2224 * bug fix: EXPORT left symbol unexported in conflict situations.
2225 (thanks to Michael Weber)
2226 * bug fix: correctly handle name conflicts involving CL:NIL.
2227 (thanks to Michael Weber)
2228 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2229 conflicts arising from USEing package with conflicting symbols
2230 correctly. (thanks to Michael Weber)
2232 changes in sbcl-1.0.19 relative to 1.0.18:
2233 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2234 warnings that go otherwise unhandled will be muffled if they are
2235 of the type that's the value of this variable.
2236 * optimization: stack allocation is slightly more efficient on x86
2238 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2239 where a raw slot always is initialized using the initform whose
2240 type is not know sufficiently well a compile-time are now compiled
2241 correctly. (reported by John Morrison)
2242 * bug fix: compiler no longer makes erronous assumptions in the
2243 presence of non-foldable SATISFIES types.
2244 * bug fix: stack analysis missed cleanups of dynamic-extent
2245 arguments in non-let-converted calls to local functions.
2246 * improvements to the Windows port:
2247 ** adjusted address spaces for building on both Win32 and
2248 Win64. (thanks for John Connors)
2249 * fixed some bugs revealed by Paul Dietz' test suite:
2250 ** interval arithmetic during type derivation used inexact integer
2251 to single-float coercions.
2252 ** arithmetic operations involving large integers and single
2253 floats give the same results in compiled and interpreted code.
2254 ** deriving the result type of COERCE no longer signals an error
2255 if the derived type of the second argument is a MEMBER type
2256 containing invalid type specifiers.
2257 ** ADJOIN with constant NIL as second argument works correctly.
2258 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2260 changes in sbcl-1.0.18 relative to 1.0.17:
2261 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2262 profiles only the current thread.
2263 * minor incompatible change: changes to SYMBOL-VALUE of constants
2264 defined with DEFCONSTANT now signal an error.
2265 * enhancement: SB-SPROF now has support for wallclock profiling,
2266 and is also able to profile specific threads. REPORT output
2267 has also additional sorting options.
2268 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2270 * optimization: structure allocation has been improved
2271 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2272 ** out of line constructors are ~10% faster.
2273 ** inline constructors are ~15% faster.
2274 ** inline constructors are capable of dynamic extent allocation
2275 (generally on x86 and x86-64, in some cases on other platforms
2277 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2279 * optimization: file compiler is now able to coalesce non-circular
2280 lists, non-base strings, and bit-vectors. Additionally, constants
2281 are never referenced through SYMBOL-VALUE at runtime.
2282 * optimization: code defining methods on PRINT-OBJECT (and other
2283 generic functions in the COMMON-LISP package) now loads faster.
2284 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2286 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2287 fasl is now deleted. (reported by Attila Lendvai)
2288 * bug fix: READ-LINE always returned NIL for the last line in files.
2289 (reported by Yoshinori Tahara)
2290 * bug fix: more accurate disassembly annotations of foreign function
2291 calls. (thanks to Andy Hefner)
2292 * bug fix: trimming non-simple strings and non-string string
2293 designators when the there is nothing to trim works properly.
2294 (thanks to James Knight)
2295 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2296 (thanks to Travis Cross)
2297 * fixed some bugs revealed by Paul Dietz' test suite:
2298 ** NIL is a valid function name (regression at 1.0.13.38)
2299 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2300 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2301 fill pointers properly (regression at 1.0.12.23)
2302 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2303 displacement indices properly (regression at 1.0.12.23)
2305 changes in sbcl-1.0.17 relative to 1.0.16:
2306 * temporary regression: user code can no longer allocate closure
2307 variable storage on stack, due to bug 419 without explicitly
2308 requesting it. Please consult sbcl-devel for advice if you need to
2309 use this feature in the meanwhile.
2310 * new feature: runtime argument --control-stack-size can be used to
2311 adjust thread default control stack size.
2312 * enhancement: improved TIME output
2313 ** all times are reported using the measured accuracy (milliseconds
2314 for real and GC times, microseconds for everything else.)
2315 ** processor cycle counts on x86 and x86-64.
2316 ** interpreted forms are counted for both evaluator modes.
2317 ** number of lambdas converted by the compiler is reported.
2318 ** CPU percentage report (computed from real and total run time.)
2319 ** more comprehensive run time reporting, using a condenced format
2320 ** interperted form, lambda, and page fault counts are omitted
2322 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2324 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2325 * optimization: two argument forms of LAST are upto ~10% faster
2326 in normal SPEED policies.
2327 * optimization: NCONC no longer needs to heap cons its &REST list
2328 in normal SPEED policies.
2329 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2330 to Sidney Markowitz)
2331 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2332 regression since 1.0.9.1. (thanks to Eric Marsden)
2333 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2334 since 1.0.15.36. (thanks to Paul Khuong)
2335 * bug fix: LAST when always returned the whole list when given a bignum
2336 as the second argument.
2337 * bug fix: dynamic extent allocation of nested lists and vectors
2338 could leak to otherwise accessible parts.
2339 * bug fix: invalid optimization of heap-allocated alien variable
2341 * bug fix: fasl header checking is less vulnerable to different
2342 platform word lengths.
2343 * bug fix: more correct assembler syntax for GNU binutils
2344 2.18.50.0.4 support. (thanks to Marijn Schouten)
2345 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2347 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2348 declarations) successfully. (reported by Attila Lendvai)
2350 changes in sbcl-1.0.16 relative to 1.0.15:
2351 * minor incompatible change: revert the changes to sb-posix's error
2352 signaling added in 1.0.14.
2353 * minor incompatible change: change PROBE-FILE back to returning
2354 NIL whenever we can't get a truename, as was the case before 1.0.14.
2355 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2356 inherits from ERROR instead of just CONDITION.
2357 * new feature: SB-INTROSPECT can provide source locations for instances
2358 as well. (thanks to Tobias Rittweiler)
2359 * optimization: binding special variables now generates smaller code
2360 on threaded platforms.
2361 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2362 and cases where no :TEST is given but the compiler can infer that
2363 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2364 * optimization: better LOGNOT on fixnums.
2365 * optimization: modular arithmetic for a particular requested width
2366 is implemented using a tagged representation unless a better
2367 representation is available.
2368 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2369 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2370 for wellformedness and returns a specialized vector. (reported by
2371 Francois-Rene Rideau)
2372 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2373 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2374 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2375 unscheduling timer at the same time as another timer fires.
2376 * bug fix: don't reschedule timers for dead threads.
2377 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2378 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2379 bogus errors if select() was interrupted.
2380 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2382 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2383 * enhancement: cleaner backtraces for interactive interrupts, as
2384 well as other cases where the interesting frames used to be
2385 obscured by interrupt handling frames.
2386 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2387 now supported, and tracing a whole package using (TRACE "FOO") now
2388 traces SETF-functions as well.
2389 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2390 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2391 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2392 * unreadably printed representation of hash-tables now includes
2394 * bug fix: partially fixed #188: type propagation from assignments
2395 is now more efficient.
2396 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2397 'DOUBLE-FLOAT) are not flushable.
2398 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2399 full address of the object, and none of the tag bits.
2400 * bug fix: readably printing hash-tables now respects other printer
2401 control variables. (reported by Cedric St-Jean)
2402 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2403 keyword with MAKE-HASH-TABLE.
2404 * bug fix: export SB-POSIX:MKSTEMP.
2405 * bug fix: SORT was not interrupt safe.
2406 * bug fix: XREF accounts for the last node of each basic-block as
2408 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2409 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2410 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2411 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2412 create obsolete instances in the case of redefinition or
2413 obsoletion of a superclass. (thanks to Andy Hefner)
2414 * bug fix: Support for the Alpha architecture has been revived; it had
2415 suffered somewhat from lack of maintenance since sbcl-1.0.
2416 * improvements to the Windows port:
2417 ** The system detects the codepage to use at startup, instead of
2418 using the value from the saved core. (thanks to Kei Suzuki)
2420 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2421 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2422 (see documentation for details.)
2423 * revived support for OpenBSD (contributed by Josh Elsasser)
2424 * partially fixed bug #108: ROOM no longer suffers from occasional
2425 (AVER (SAP= CURRENT END)) failures.
2426 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2427 bodies no longer cause a WARNING to be signalled. (reported by
2429 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2430 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2431 the bug in TRUNCATE.) (reported by Michael Weber)
2432 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2433 no samples. (reported by Andy Hefner)
2434 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2435 no longer appear as (NIL ...) frames in backtraces.
2436 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2437 is now actually exported from SB-EXT as documented. (reported by
2439 * bug fix: sb-aclrepl now correctly understands how to inspect
2440 single-floats on 64-bit platforms where single-floats are not boxed.
2441 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2442 yet been finalized. (reported by Levente Meszaros)
2443 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2444 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2445 SBCL-specific optimize qualities.
2447 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2448 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2449 an executable in the search path, and does so in the child
2450 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2451 been removed; it can be found in the CVS history, for somebody who
2452 needs that search behavior (see the manual).
2453 * minor incompatible change: compiler policy re. weakening type
2454 checks has changed: now type checks are weakened only if SAFETY < 2
2456 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2457 unparsing of directory pathnames as files. Analogously,
2458 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2459 filename to parse into a directory pathname.
2460 * enhancement: implicit generic function creation now signals a
2461 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2462 users can bind handlers for and muffle around calls to LOAD.
2463 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2464 to be used (using the default stream external format), and allows
2465 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2466 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2467 strings and vectors whose element-type or simplicity is not fully
2468 known at compile-time.
2469 * optimization: STRING-TRIM and related functions no longer allocate
2470 a new string when no trimming needs to be performed. These functions
2471 are also faster than before when the input string has been declared
2473 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2474 * optimization: READ-LINE is significantly faster for files containing
2476 * optimization: non-open coded uses of character comparison operators
2477 (e.g. char=) no longer cons when called with more than one parameter
2478 on platforms supporting dynamic-extent allocation.
2479 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2480 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2481 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2483 * bug fix: some sequence functions elided bounds checking when
2485 * bug fix: too liberal weakening of union-type checks when SPEED >
2487 * bug fix: more bogus fixnum declarations in ROOM implementation
2490 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2491 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2492 :SYNCHRONIZED argument, which makes the hash-table safe for
2493 concurrent accesses (but not iteration.) See also:
2494 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2495 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2496 * optimization: CONCATENATE on strings is an order of magnitude faster
2497 in code compiled with (> SPEED SPACE).
2498 * optimization: SUBSEQ is ~50% faster on lists.
2499 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2500 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2501 END is smaller then START.
2502 * bug fix: SB-PROFILE will no longer report extra consing for nested
2503 calls to profiled functions.
2504 * bug fix: ROOM implementation had bogus fixnum declarations which
2505 could cause type-errors when calling ROOM on large images.
2506 * bug fix: if file compilation is aborted, the partial fasl is now
2507 deleted, and COMPILE-FILE returns NIL as the primary value.
2508 * bug fix: number of thread safety issues relating to SBCL's internal
2509 hash-table usage have been fixed.
2510 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2511 be returned from its body when the values were being returned
2512 using unknown-values return convection and the W-P-O was wrapped
2513 inside an UNWIND-PROTECT.
2514 * bug fix: sb-posix should now compile again under Windows, enabling
2515 slime to work again.
2517 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2518 * incompatible change: hash-table accessor functions are no longer
2519 automatically protected by locks. Concurrent accesses on the same hash-table
2520 from multiple threads can give inconsistent results or even corrupt the
2521 hash-table completely. Multi-threaded applications should do their own
2522 locking at the correct granularity. In the current implementation it is
2523 still safe to have multiple readers access the same table, but it's not
2524 guaranteed that this property will be maintained in future releases.
2525 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2526 and will signal an error at runtime.
2527 * enhancement: SB-THREAD package now exports a semaphore interface.
2528 * enhancement: CONS can now stack-allocate on x86 and
2529 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2531 * enhancement: nested lists can now be stack allocated on
2532 platforms providing stack allocation support.
2533 * enhancement: dynamic-extent support has been extended to support
2534 cases where there are multiple possible sources for the stack
2536 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2537 if the mutex is uncontested on Linux.
2538 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2539 as specified by the CLHS. (thanks to Tobias Rittweiler)
2540 * bug fix: NaN comparison now works on x86-64.
2541 * bug fix: CLOSE :ABORT T on a stream with pending output now
2543 * bug fix: instances of non-standard metaclasses using standard
2544 instance structure protocol sometimes missed the slot type checks
2546 * bug fix: known functions can be inlined in high-debug code.
2548 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2549 * minor incompatible change: the MSI installer on Windows no longer
2550 associates .lisp and .fasl files with the installed SBCL.
2551 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2552 on Windows. (thanks to Luis Oliviera)
2553 * new feature: SB-CLTL2 contrib module now implements
2554 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2555 * optimization: scavenging weak pointers is now more efficient,
2556 requiring O(1) instead of O(N) per weak pointer to identify
2557 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2558 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2559 method bodies using constant slot-names when the first argument is
2560 a specializer parameter for the method.
2561 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2562 names, when the class of the instance is a direct instance
2563 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2564 as slow as the constant slot-name case.)
2565 * optimization: member type construction is now O(N) instead
2567 * optimization: UNION and NUNION are now O(N+M) for large
2568 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2570 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2571 now more readable in environments like Slime which display it.
2572 (thanks to Tobias C. Rittweiler)
2573 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2574 was able to infer the correct argument type for the object on which
2575 the CAS operation was being performed.
2576 * bug fix: copy propagation interfered with parallel assignment
2577 semantics in local calls. (reported by Paul Khuong)
2578 * bug fix: the signed modular fixnum shift compiled to wrong code on
2579 x86 and x86-64. (spotted by a slight modification to some of
2582 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2583 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2584 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2585 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2587 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2588 and generic function now print the object identity for anonymous
2589 instances. (thanks to Attila Lendvai)
2590 * enhancement: as an extension to MOP, SBCL now supports SETF of
2591 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2592 (thanks to Attila Lendvai)
2593 * enhancement: sb-cover has an alternate annotation mode which puts
2594 the form annotations at the car of the form, instead of annotating
2595 it completely. The benefit of this mode is that it shows better
2596 which forms were instrumented by the compiler.
2597 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2598 by printer control variables. (reported by Dan Corkill)
2599 * bug fix: system leaked memory when delayed output was performed by
2600 the OS in smaller chunks then expected. (thanks to David Smith)
2601 * bug fix: system leaked memory when file streams were not closed
2603 * bug fix: large objects written to slow streams that were modified
2604 after the write could end up with the modified state written to
2605 the underlying file descriptor.
2606 * bug fix: multiple threads operating in parallel on the same stream
2607 could cause buffer-overflows.
2608 * bug fix: source location information is stored correctly
2609 (broken since 1.0.6). This bug would generally show up as the
2610 Slime debugger highlighting the wrong form when the sldb-show-source
2612 * bug fix: Branch forms are again annotated as branches in the sb-cover
2614 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2615 on x86-64. (reported by Gregory Vanuxem)
2616 * bug fix: EQUALP could return wrong results for structures with raw
2617 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2618 word). (reported by Vjacheslav Fyodorov)
2619 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2622 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2623 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2624 atomic compare-and-swap operations on threaded platforms.
2625 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2626 allows assigning a global minimum value to optimization qualities
2627 (overriding proclamations and declarations).
2628 * enhancement: closed over variables can be stack-allocated on x86
2630 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2632 * optimization: slot definition lookup is now O(1). This speeds up
2633 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2634 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2635 * optimization: ASSOC and MEMBER can now be open-coded for all
2636 combinations of keyword arguments when second argument is constant
2637 and SPEED >= SPACE. In other cases a specialized version is
2639 * bug fix: using obsoleted structure instances with TYPEP and
2640 generic functions now signals a sensible error.
2641 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2642 (reported by Kristoffer Kvello)
2643 * bug fix: backtrace construction is now more careful when making
2644 lisp-objects from pointers on the stack, to avoid creating bogus
2645 objects that can be seen by the GC.
2646 * bug fix: defaulting of values in contexts expecting more than 7
2647 variables now works on x86-64. (reported by Christopher Laux)
2648 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2650 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2651 as the property-list of a symbol.
2652 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2653 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2654 situations requested, are once again file-compileable. (reported
2657 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2658 * MOP improvement: support for user-defined subclasses of
2659 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2660 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2661 the expansion of DEFMETHOD, is responsible for generating a form
2662 which creates a list of specializers when evaluated. Additional
2663 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2664 debugging and introspective support.
2665 * minor incompatible change: the (unsupported) spinlock interface
2666 has changed: free spinlock now has the value NIL, and a held spinlock
2667 has the owning thread as its value.
2668 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2669 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2671 * enhancement: name of a socket-stream is now "a socket" instead of
2672 "a constant string".
2673 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2674 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2675 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2676 for generic functions. (Thanks to Tobias C. Rittweiler)
2677 * optimization: bignum printing speed has been improved by 20-40%
2678 (depending on the bignum size.)
2679 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2681 * bug fix: the cache used by the CLOS to store precomputed effective
2682 methods, slot offsets, and constant return values is now thread and
2684 * bug fix: generic function dispatch function updating is now thread
2685 and interrupt safe (in the sense that the known issues have been
2687 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2688 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2689 * bug fix: asdf systems with dependencies to the SB-POSIX or
2690 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2691 * bug fix: interrupt safety of applicable method computation has been
2694 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2695 * new contrib: sb-cover, an experimental code coverage tool, is included
2696 as a contrib module.
2697 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2698 significantly faster.
2699 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2700 produce more efficient code on x86-64 if the compiler can determine
2701 that (+ INDEX <constant>) does not require a bounds check and FOO
2702 has an element type at least 8 bits wide.
2703 * enhancement: a new, experimental synchronous timeout facility is
2704 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2705 * enhancement: when a symbol name conflict error arises, the
2706 conflicting symbols are always printed with a package prefix.
2707 (thanks to Kevin Reid)
2708 * enhancement: stepping is now once again supported on the SPARC and
2709 MIPS platforms. (It is also now more likely to work on CheneyGC
2711 * enhancement: sb-sprof can now also track and report accurate call
2713 * bug fixes: the treatment of non-standard subclasses of
2714 SB-MOP:SPECIALIZER is more correct.
2715 * incompatible change: PURIFY no longer copies the data from the
2716 dynamic space into the static and read-only spaces on platforms
2717 that use the generational garbage collector
2718 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2720 * bug fix: GC race condition occasionally resulting in crashes with
2721 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2723 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2725 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2726 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2727 * bug fix: an asynchronous interrupt could previously leave the
2728 system running with GC inhibited.
2729 * bug fix: a DECLARE form evaluated at top-level now causes an error
2730 rather than silently (or verbosely) returning NIL.
2731 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2732 result in a error being signalled due to source form lookup errors.
2733 (reported by Peter Graves)
2735 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2736 * incompatible change: removed writer methods for host-ent-name,
2737 host-ent-addresses -- changing the values did not update the DNS
2739 * minor incompatible change: changed experimental JOIN-THREAD interface
2740 * documentation: the manual now lists reader and writer methods
2741 in class slot documentation sections. (thanks to Richard M Kreuter)
2742 * documentation: unwinding from asyncronous events has been
2743 documented as unsafe.
2744 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2745 in multithreaded application code.
2746 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2747 platforms. (thanks to James Anderson for the optimization hint)
2748 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2750 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2751 variants no longer cons.
2752 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2753 their NOT- variants no longer cons.
2754 * optimization: EQUAL hash tables no longer use SXHASH for objects
2755 of all data types, but instead use an EQL hash for types for which
2756 EQUAL is the same as EQL.
2757 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2758 are significantly faster.
2759 * optimization: new STRING-OUTPUT-STREAM implementation is much
2760 faster for large outputs and conses 30% less on average.
2761 * enhancement: XREF information is now collected for references made
2762 to global variables using SYMBOL-VALUE and a constant argument.
2763 * enhancement: SIGINT now causes a specific condition
2764 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2765 * bug fix: FILE-POSITION used to signal an error in some cases where
2766 ANSI requires it to return NIL.
2767 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2768 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2769 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2771 * bug fix: bad type declaration in the CLOS implementation has
2772 been fixed. (reported by James Anderson)
2773 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2774 (thanks to Lutz Euler)
2775 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2776 required by the CLHS. (reported by Samium Gromoff)
2777 * bug fix: dead unbound variable references now signal an error.
2778 (reported by Marco Monteiro)
2779 * bug fix: / with an unused value was being deleted in safe code.
2780 (thanks to Marco Monteiro and Kevin Reid)
2781 * bug fix: number of characters that can be written onto a single
2782 line in a file is unlimited.
2783 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2784 been fixed by inhibiting interrupts for when GC is disabled.
2785 * bug fix: some interrupt safety issues with GETHASH, (SETF
2786 GETHASH), CLRHASH and REMHASH have been fixed.
2787 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2788 specifier no longer causes infinite recursion.
2789 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2790 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2791 * bug fix: an &environment argument with the correct variable information
2792 is passed to macros that are expanded during byte compilation.
2793 (reported by Samium Gromoff)
2794 * bug fix: a logic error was causing the hash function for bignums to
2795 have excessive amounts of collisions. (reported by Faré Rideau)
2796 * bug fix: modifying the contents of an array could change the return
2797 value of SXHASH on that array, which is only allowed for strings
2798 and bit vectors. (bug introduced in 0.9.16)
2799 * improvement: the x86-64/darwin port now passes all tests (except
2800 for the debugger tests) but should still be considered
2801 experimental until this is fixed.
2802 * improvement: a style-warning is signaled for CASE (etc) clauses with
2803 duplicate keys. (thanks to Kevin Reid)
2804 * improvement: macos/x86 and macos/x86-64 now use mach exception
2805 handlers for dealing with illegal instructions (for trapping and
2806 error handling) and memory protection violations (for GC).
2808 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2809 * new platform: experimental support for x86-64/darwin (MacOS).
2810 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2811 and getnameinfo sockets functions are used instead of gethostbyaddr
2812 and gethostbyname, on platforms where the newer functions are available.
2813 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2815 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2816 don't print the startup banner, but behave as if --noinform was passed
2817 as a command line argument. (thanks to Kevin Reid)
2818 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2819 * optimization: code using alien values with undeclared types is much faster.
2820 * optimization: the compiler is now able to open code SEARCH in more cases.
2821 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2822 * bug fix: using standardized COMMON-LISP special variables as loop
2823 variables no longer signals bogus package lock violations. (reported
2825 * bug fix: declaring local loop variables to be of a range-limited type
2826 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2827 (reported by Andras Simon)
2828 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2829 bugs remain on x86-64.)
2830 * bug fix: the #= and ## reader macros now interact reasonably with
2831 funcallable instances.
2832 * bug fix: type-checks for function arguments were compiled using the
2833 compiler policy settings of the wrong lexical environment (in 1.0.2
2835 * bug fix: SHADOW accepts characters as string designators, as required
2836 by the spec (thanks to Eric Marsden)
2837 * bug fix: fixed GC safety issues when foreign functions are called with
2838 non-base strings as arguments
2839 * bug fix: more consistent error output for fatal-compiler-warnings, like
2841 * bug fix: functions with proper names were showing up as NIL in
2842 backtraces (reported by Edi Weitz, regression in 1.0.2)
2844 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2845 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2846 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2847 produce more efficient code on the x86 if the compiler can determine
2848 that (+ INDEX <constant>) does not require a bounds check and FOO
2849 has an element type at least 8 bits wide.
2850 * bug fix: references to undefined variables are handled the same way
2851 in toplevel forms as in the normal compiler
2852 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2854 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2855 (thanks to Jon Buller)
2856 * improvement: faster compilation times for complex functions
2857 * improvement: added readlink support to SB-POSIX (thanks to Richard
2860 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2861 * improvement: experimental support for mach exception handling on
2862 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2864 * improvement: support for GBK external format.
2865 (thanks to Chun Tian (binghe))
2866 * improvement: the debugger now displays variables that have been closed
2867 over, in code compiled with (DEBUG 2) or higher
2868 * improvement: support for executable cores on NetBSD (thanks to
2870 * new feature: added a RESTART-FRAME debugger command
2871 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2872 be used to provide an implementation for FILE-POSITION on Gray streams
2873 (thanks to Eric Marsden)
2874 * new feature: add syslog, openlog and closelog support to SB-POSIX
2875 (thanks to Richard Kreuter)
2876 * optimization: the function call overhead in code compiled with
2877 a high DEBUG optimization setting is significantly
2878 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2879 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2880 (thanks to Tony Martinez)
2881 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2882 evaluated once (reported by Kevin Reid)
2883 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2884 works again (thanks to Kilian Sprotte)
2885 * bug fix: an error is signaled for tagbodies with duplicate tags
2886 (thanks to Stephen Wilson)
2887 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2888 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2889 stack frames from alien callbacks.
2890 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2891 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2892 65k pages (thanks to David Woodhouse)
2893 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2895 changes in sbcl-1.0.1 relative to sbcl-1.0:
2896 * new platform: FreeBSD/x86-64, including support for threading.
2897 * new feature: the compiler stores cross-referencing information
2898 about function calls (who-calls), macroexpansion (who-macroexpands)
2899 and special variables (who-binds, who-sets, who-references) for code
2900 compiled with (< SPACE 3). This information is available through the
2901 sb-introspect contrib.
2902 * new feature: users may subclass SEQUENCE, and have instances of
2903 these classes interoperate with standard Common Lisp functions if
2904 a number of methods are defined. (This feature is experimental
2905 and the interface subject to change based on feedback from SBCL
2906 users and the general community)
2907 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2908 x86/x86-64, rather than the previous fixed depth of 8
2909 * improvement: another pthread back-end of mutex "pthread-futex".
2910 * bug fix: non-ascii command-line arguments are processed correctly
2911 (thanks to Yaroslav Kavenchuk)
2912 * bug fix: non-required arguments were not passed correctly when a method
2913 defined using DEFMETHOD was called from a mop-generated method using
2914 CALL-NEXT-METHOD (reported by Pascal Costanza)
2915 * bug fix: recursion is now permitted in accessors through
2916 SLOT-UNBOUND. (reported by Pascal Costanza)
2917 * bug fix: an error was signaled at startup if the HOME environment
2918 variable was defined, but had an empty value (reported by Peter Van Eynde)
2919 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2920 signal a PROGRAM-ERROR, not a BUG.
2921 * bug fix: SB-POSIX:READDIR works when built with large file support.
2922 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2924 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2925 for better automatic indentation support. (thanks to Matt Pillsbury)
2926 * optimization: loading generic functions no longer takes O(n^2) time,
2927 proportional to the amount of methods in the generic function
2928 (reported by Todd Sabin and Jeremy Brown)
2929 * optimization: the FIND and POSITION family of sequence functions
2930 are significantly faster on arrays whose element types have been
2932 * improvements to the Windows port:
2933 ** Intermittent heap corruption problems have been fixed. (thanks
2934 to Alastair Bridgewater)
2935 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2937 ** Lisp is able to unwind foreign exception frames from alien
2938 callbacks. (thanks to Alastair Bridgewater)
2940 changes in sbcl-1.0 relative to sbcl-0.9.18:
2941 * improvement: experimental support for threading on FreeBSD/x86.
2942 (thanks to NIIMI Satoshi)
2943 * improvement: runtime option --dynamic-space-size can be used
2944 to set the size of the dynamic space reserved on startup.
2945 * improvement: floating point modes in effect are now saved in
2946 core, and restored on startup.
2947 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2948 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2949 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2950 threads are not running after *SAVE-HOOKS* have run.
2951 * improvement: writes to CLOS instance slots are type-checked in code
2952 compiled with (SAFETY 3)
2953 * improvement: floating-point exception handling on FreeBSD (thanks to
2955 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2956 (thanks to Zach Beane)
2957 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2959 * improvement: added support for the Shift-JIS external format.
2960 (contributed by NIIMI Satoshi)
2961 * improvement: callbacks are supported on Linux/PPC. (thanks to
2963 * bug fix: compiler bug triggered by a (non-standard) VALUES
2964 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2965 * bug fix: file compiler no longer confuses validated and already
2966 dumped structurres. (reported by Kaersten Poeck)
2967 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2968 fill-pointer signals a type-error as required. (thanks to
2970 * bug fix: disassemly of funcallable instances works.
2971 * bug fix: single stepping on PPC.
2972 * bug fix: fix thread-safety problems in the type system (generally
2973 manifesting as nonsensical errors like "STRING is a bad type specifier
2974 for sequences" or "The value 1 is not of type FIXNUM")
2975 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2976 (reported by Josip Gracin)
2977 * bug fix: an error is signaled for attempts to displace arrays with
2978 incompatible element types (thanks to Mario Mommer)
2979 * bug fix: more correct handling of wide characters in debug info
2980 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2981 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2982 and don't cause extra consing
2983 * optimization: MAP and MAP-INTO are significantly faster on vectors
2984 whose elements types have been declared.
2985 * Improvements to SB-SPROF:
2986 ** Support for allocation profiling
2987 ** Reduced profiling overhead, especially for long profiling runs
2988 * Improvements to the Windows port:
2989 ** floating point exceptions are now reported correctly.
2990 ** stack exhaustion detection works partially.
2991 ** more accurate GET-INTERNAL-REAL-TIME.
2992 ** better RUN-PROGRAM behaviour in case of errors in the child
2994 ** PROBE-FILE now simplifies pathnames correctly.
2995 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2996 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2997 1st 1970 (although time timezone data will be unreliable).
2998 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3000 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3001 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3002 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3004 * bug fix: two potential GC deadlocks affecting threaded builds.
3005 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3006 returns T (reported by Anton Kazennikov)
3007 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3008 with non-variable places
3009 * bug fix: remove a race condition in the setting of
3010 funcallable-instance functions, this should make threaded CLOS
3011 code more stable against memory faults.
3012 * bug fix: corruption of specials when unbinding is interrupted by an
3013 asynchronous unwind (reported by Hannu Koivisto)
3014 * improvement: the debugger will now also display local variables that
3015 are only used once, for code compiled with a DEBUG optimization quality
3018 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3019 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3020 * incompatible change: External-format support for FFI calls. The
3021 SB-ALIEN:C-STRING no longer implies an ASCII
3022 external-format. Instead the string is subject to external-format
3023 conversion. Additionally return values of type SB-ALIEN:C-STRING
3024 are by default of type (SIMPLE-ARRAY CHARACTER), not
3025 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3026 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3027 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3028 * incompatible change: SB-EXT package no longer contains the
3029 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3030 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3032 * incompatible change: the single-stepper is no longer available
3033 on Alpha, Mips and Sparc platforms.
3034 * minor incompatible change: the direct superclasses of
3035 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3036 not (STANDARD-OBJECT FUNCTION). This makes the
3037 class-precedence-lists of GENERIC-FUNCTION and
3038 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3040 * minor incompatible change: the default stream external format on
3041 non-unicode SBCL is no longer detected from the locale, but is always
3043 * new feature: Add a version of evaluator that uses an interpreter instead
3044 of the compiler. EVAL still uses the compiler by default, to switch it
3045 to use the interpreter, set the value of the variable
3046 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3047 * minor incompatible change: the single-stepper REPL has been merged
3048 with the normal debugger (see the "Stepping" heading of the debugger help
3049 for more details). The debugger command STEP will no longer switch
3050 to the single-stepper REPL.
3051 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3052 for a type now works.
3053 * bug fix: loading of default sysinit file works. (thanks to Leonid
3055 * bug fix: better detection of circularities in the file-compiler.
3056 (reported by Marco Monteiro)
3057 * bug fix: the CL pathname functions now work with files that have
3058 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3059 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3060 systems with Unix98 pty semantics.
3061 * bug fix: ASDF-INSTALL will now work with bsd tar.
3062 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3064 * bug fix: timers expiring in dead threads no longer cause a
3065 type-error (reported by Paul "Nonny Mouse").
3066 * bug fix: thanks to more lightweight single-stepper instrumentation,
3067 code compiled with (DEBUG 3) will compile and execute significantly faster,
3068 and will have more accurate type-inferencing than before
3069 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3070 whose bindings are modified
3071 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3072 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3073 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3074 CL:SOFTWARE-VERSION with proper version
3076 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3077 * feature: implemented the READER-METHOD-CLASS and
3078 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3079 as specified by AMOP.
3080 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3082 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3083 (thanks to Lutz Euler)
3084 * optimization: hashing of general arrays and vectors has been
3085 improved. (reported by Any Fingerhut)
3086 * enhancement: SB-INTROSPECT is now able to find definitions of
3087 profiled functions. (thanks to Troels Henriksen)
3088 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3089 as well, allowing compiler-macros for SETF-functions to expand.
3090 * enhancement: step-instrumentation no longer wraps known
3091 single-value functions with multiple-value context, allowing
3092 better type inference.
3093 * fixed bug #337: use of MAKE-METHOD in method combination now works
3094 even in the presence of user-defined method classes. (reported by
3095 Bruno Haible and Pascal Costanza)
3096 * fixed bug #339(c): if there are applicable methods not part of any
3097 long-form method-combination group, call INVALID-METHOD-ERROR.
3098 (reported by Bruno Haible)
3099 * fixed bug #361: the :FUNCTION initarg in the protocol for
3100 initialization of methods can now be used to override
3101 internally-produced optimized functions. (reported by Bruno
3103 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3104 system-provided lambda expression no longer cause warnings about
3105 unbound #:|pv-table| symbols.
3106 * bug fix: improved the handling of type declarations and the
3107 detection of violations for keyword arguments with non-constant
3109 * bug fix: potentially erronous calls to PATHNAME and
3110 MERGE-PATHNAMES were being flushed in some cases.
3111 (reported by Richard Kreuter)
3112 * bug fix: compiled calls to TYPEP were mishandling obsolete
3113 instances. (reported by James Bielman and Attila Lendvai)
3114 * bug fix: format strings with ~> without matching ~< no longer
3115 trigger an AVER, but signal an understandable error instead.
3116 (reported by Antonio Martinez)
3117 * bug fix: specifying an output-file without a pathname-type for
3118 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3119 of input-file instead of "fasl". (reported by Robert Dodier)
3120 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3121 (reported by James Y Knight).
3122 * bug fix: compiler-macros-function did not consider the environment
3123 argument for shadowing by local functions.
3124 * bug fix: compiler-macros expansion was inhibited by local INLINE
3126 * bug fix: inline expansions of known functions were subject to
3127 step-instrumentation in high debug policies, leading to problems
3128 with type-inference.
3129 * bug fix: compiler failed to differentiate between different CONS
3130 types in some cases.
3131 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3132 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3133 * bug fix: #368: incorrect use of expressed vs. upgraded array
3135 * bug fix: #306a: more precise unions of array types.
3136 * thread-safety improvements:
3137 ** CONDITION-WAIT could return early on Linux, if the thread was
3138 interrupted and subsequently continued with SIGCONT.
3139 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3141 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3142 * added support for the ucs-2 external format. (contributed by Ivan
3144 * minor incompatible change: pretty printing of objects of type
3145 (cons symbol) is, in the default pprint-dispatch-table, now
3146 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3148 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3149 called later in a class's lifetime, possibly as late as when the
3150 first instance of the class is created. Previously,
3151 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3152 class became finalizeable.
3153 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3154 for multibyte external-format streams. (thanks to "vbzoli")
3155 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3156 with :ALLOCATION :CLASS inherited from superclasses of the
3158 * fixed bug: anonymous classes can now be created using the :NAME
3159 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3160 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3161 * fixed bug: core-files saved with :EXECUTABLE T can again be
3162 executed when SBCL_HOME isn't set. (reported by James Knight)
3163 * fixed bug: toplevel LOCALLY forms with declarations could
3164 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3165 * fixed bug: printing from several different threads using different
3166 values of *print-case* could cause invalid output, due to
3167 some internal special variables of the printer not being bound
3168 thread-locally (reported by Max Mikhanosha)
3169 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3170 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3171 (reported by Pascal Costanza)
3172 * fixed bug: FINALIZE-INHERITANCE is called from
3173 REINITIALIZE-INSTANCE on classes when the class has previously
3174 been finalized, as required by AMOP.
3175 * minor code generation optimizations:
3176 ** better register allocation in CLOS dispatching functions
3177 ** overflow detection when coercing signed bytes to fixnums on x86-64
3178 ** is now implemented with one IMUL instruction instead of three shifts
3179 ** more efficient bit-vector access on x86 and x86-64
3180 ** more efficient access to raw structure slots on x86 and x86-64
3181 * fixed some bugs revealed by Paul Dietz' test suite:
3182 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3183 return its argument.
3185 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3186 * feature: thread support on Solaris/x86, and experimental thread support
3188 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3190 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3191 default method for SLOT-UNBOUND.
3192 * minor incompatible change: prevent the user from specializing the
3193 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3194 somewhat counter to the intent of the protocol, I (CSR) think, and
3195 additionally it just doesn't work in SBCL as currently
3196 implemented, thanks to optimizations (that are always valid for
3197 the other three SLOT-VALUEish functions, but not for the setter).
3198 * minor incompatible change: the :SB-LDB feature is now enabled by
3199 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3200 the low-level debugger.
3201 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3202 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3203 down to an SB-SYS:FD-STREAM, allowing direct communication in
3204 more cases. Temporary files and pipes are still used as a fallback
3206 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3207 on the non-reentrant C functions localtime(3) and gmtime(3).
3208 * bug fix: global optimization policy was not visible in LOCALLY and
3210 * bug fix: class objects can be used as specializers in methods.
3211 (reported by Pascal Costanza)
3212 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3213 with a type error. (reported by blitz_ on #lisp)
3214 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3215 failed with a type error. (reported by Pascal Bourguignon)
3216 * bug fix: merging pathnames against defaults with :DIRECTORY
3217 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3218 (reported by James Y Knight)
3219 * bug fix: saving large (>2GB) cores on x86-64 now works
3220 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3221 constant index and a (simple-array (signed-byte 32)) array
3222 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3223 error (patch by Robert J. Macomber)
3224 * feature: TIME now displays the amount of run-time spent in GC
3225 * bug fix: The debugger now does a better job of respecting
3226 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3227 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3228 workaround for bug 403.)
3229 * bug fix: floating point exception handling now works on FreeBSD
3230 (thanks to NIIMI Satoshi)
3231 * fixed some bugs revealed by Paul Dietz' test suite:
3232 ** MISC.641: LET-conversion were not supposed to work in late
3234 * improvements to the Win32/x86 port:
3235 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3236 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3238 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3239 * new feature: source path information is generated for macro-expansion
3240 errors for use in IDE's like Slime (thanks to Helmut Eller)
3241 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3242 * bug fix: compiler does not loop forever on an invalid type in
3244 * improvement: compilation of most CLOS applications is significantly
3246 * optimization: added a limited bytecode compiler for simple toplevel
3247 forms, speeding up compilation and FASL loading
3248 * bug fix: the statistical profiler now properly distinguishes anonymous
3251 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3252 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3253 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3254 into subclasses of the finalized class. Now user calls to
3255 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3256 system return before any subclasses are finalized.
3257 * minor incompatible change: The reader no longer ignores errors
3258 regarding non-existent packages in #+ and #- feature tests.
3259 * new feature: command line options --no-sysinit, --no-userinit to
3260 inhibit loading the corresponding init files
3261 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3262 for sending data through UDP sockets (thanks to François-René Rideau)
3263 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3264 error is signalled instead (thanks to François-René Rideau)
3265 * minor incompatible change: Error signalling behaviour of lexical
3266 operations violating package locks has changed slightly. Refer to
3267 documentation on package locks for details.
3268 * enhancement: EVAL can process IF-expressions without resorting to the
3270 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3271 constant-folded properly due to missing out-of-line functions.
3272 (reported by Mika Pihlajamäki)
3273 * bug fix: LISTEN sometimes returned T even in cases where no data was
3274 immediately available from the stream
3275 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3276 were reversed. (reported by Levente Mészáros)
3277 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3278 when given a vector displaced to an adjustable array. (reported
3280 * bug fix: derivation of float boundaries from numbers outside the
3281 appropriate float range (reported by John Wiseman)
3282 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3284 * bug fix: precomputing cache entries for generic functions with
3285 some subclasses of specializers as yet invalid does not attempt to
3286 fill a cache line with a negative offset. (reported by Levente
3288 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3289 allow condition class objects as arguments to DOCUMENTATION and
3290 (SETF DOCUMENTATION); only find and set documentation for
3291 structure names for the STRUCTURE doc-type. (suggested by Gary
3293 * improvements to the Win32/x86 port:
3294 ** (user-homedir-pathname) and default initialization file
3295 locations now know about the user's "Documents and Settings"
3296 directory (thanks to Yaroslav Kavenchuk)
3297 ** run-program is implemented (thanks to Mike Thomas)
3298 ** sockets support (thanks to Timothy Ritchey)
3299 ** better backtrace support (thanks to Alastair Bridgewater)
3300 ** sb-grovel supported
3301 ** asdf-install and sb-posix work somewhat
3302 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3303 * improvements to the Solaris/x86 port:
3304 ** works on Solaris 11/Solaris Express
3305 ** floating-point exception handling support
3306 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3307 * fixed some bugs revealed by Paul Dietz' test suite:
3308 ** REMOVE-METHOD returns its generic function argument even when
3309 the method is not one of the generic functions' methods.
3310 ** objects declared as MEMBER types can be admissible arguments to
3311 structure accessors.
3312 ** printing characters should simply be printed by the FORMAT ~:C
3314 ** compiler failure when compiling functions with hairy constant
3315 defaults for optional parameters.
3316 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3317 function, which is already optimized.
3319 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3320 * new platform: experimental support for SBCL x86/Darwin, including
3321 MacOS X 10.4.5 on Intel.
3322 * new feature: Unicode character names are now known to the system
3323 (through CHAR-NAME and NAME-CHAR).
3324 * new feature: the filesystem location of SBCL's core file is
3325 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3326 * minor incompatible change: the contrib modules SB-POSIX and
3327 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3328 this change is to make it easier to distribute
3329 location-independent binaries.
3330 * bug fix: as implied by AMOP, standardized classes no longer have
3331 slots named by external symbols of public packages. (reported by
3333 * optimization: calling functions via constant symbols -- as in
3334 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3335 via the function object as in (FUNCALL #'FOO).
3336 * optimization: on x86 and x86-64, the calling convention for the
3337 case of dealing with an unknown number of values has been altered
3338 to be friendlier to the prediction heuristics implemented,
3339 particularly with reference to CALL and RET pairing. (thanks to
3340 Alastair Bridgewater)
3341 * optimization: on x86, the code for access to thread-local symbol
3342 values and binding/unbinding of thread-local symbols is smaller.
3343 (thanks to Alastair Bridgewater)
3344 * enhancement: CONSTANTP is now able to determine constantness of
3345 more complex forms, including calls to constant-foldable standardized
3346 functions and some special forms beyond QUOTE.
3347 * fixed bug: occasional GC crashes on Solaris/x86
3348 * optimization: x86-64 supports stack allocation of results of simple
3349 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3350 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3351 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3352 (thanks to James Knight)
3353 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3354 by the standard (thanks to Stephen Compall)
3356 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3357 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3358 be used for bundling the runtime and the core file into one
3359 executable binary. This feature is not currently supported on all SBCL
3360 platforms. (thanks to James Bielman and NIIMI Satoshi)
3361 * new feature: a generational or ephemeral garbage collector is now
3362 the default on the PowerPC platform (both Linux and Darwin). The
3363 old Cheney (stop and copy) collector is a build-time option.
3364 (thanks to Cyrus Harmon, after Raymond Toy)
3365 * minor incompatible change: the method by which SBCL finds its
3366 contributed modules has changed; it no longer relies on symbolic
3367 links from an $SBCL_HOME/systems directory, but searches directly
3368 in the subdirectories of $SBCL_HOME.
3369 * enhancement: the dynamic heap size on the Linux/PPC platform is
3370 markedly larger, even using the older Cheney garbage collector.
3371 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3372 certain complicated string types. (reported by Gary King)
3373 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3374 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3375 * fixed bug: DOCUMENTATION on structures no longer signals an
3376 error if no structure type of the right name exists. (reported by
3378 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3379 applicable non-standard primary or :AROUND method on
3380 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3381 no longer cause unbound variable errors. (reported by Kevin Reid)
3382 * fixed bug: metacircle resolution in cases where methods have slots
3383 added before the slots from STANDARD-METHOD. (reported by Jean
3385 * fixed bug: the Power PC assembly code for calling into lisp
3386 sometimes computed its return address wrongly (depending on the
3387 15th bit of the address, fixed at link time). This used to
3388 manifest itself in a segmentation violation while building PCL.
3389 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3390 many others over the years)
3391 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3392 the stack pointer (treated as a signed integer) is negative.
3393 (thanks to Peter van Eynde)
3395 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3396 * new platform: experimental support for the Windows operating
3397 system has been added. (thanks to Alastair Bridgewater)
3398 * fixed several bugs in and robustified the PPC FFI (including
3399 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3400 * bug fix: allow non-simple string symbol names (reported by Paul
3402 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3404 * bug fix: saving a core corrupted callbacks on x86/x86-64
3405 * bug fix: closed a loophole in metacircularity detection and
3406 grounding in the PCL implementation of CLOS.
3407 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3408 (reported by tomppa on #lisp)
3409 * bug fix: clear the direction flag on Lisp -> C transitions, as
3410 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3411 (reported by Andrej Grozin and Hendrik Maryns)
3412 * optimization: major improvements to GC efficiency on GENCGC platforms
3413 * optimization: faster implementation of EQUAL
3414 * optimization: emit more efficient opcodes for some common
3415 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3416 * optimization: several other minor code-generation improvements on x86-64
3417 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3419 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3420 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3421 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3422 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3423 by ANSI as a generic function, and for consistency (SETF
3424 GENERIC-FUNCTION-NAME) is treated likewise.
3425 * fixed bug #233.b: make constraint propagation notice when a variable
3426 value is changed after it is referenced but before it is used
3427 * fixed bug #296: no more arbitrary behaviour from filenames with
3428 odd characters as --load arguments. (reported by Adam Warner)
3429 * fixed bug #390: :CHARACTER-SET pathname components now work as
3430 expected. (reported by Tim Daly Jr)
3431 * fixed bug #391: complicated :TYPE intersections in slot
3432 definitions no longer cause an error in PCL internals.
3433 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3434 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3435 returning the number of octets which would be written to the
3436 file-stream. (thanks to Robert J. Macomber)
3437 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3438 arguments to the internal stream functions. (thanks to David
3440 * bug fix: stack exhaustion is now handled on the x86/SunOS
3441 platform. (thanks to Daisuke Homma)
3442 * bug fix: more accurate ROOM results on GENCGC platforms
3443 * optimization: improved type inference for arithmetic-for
3444 index variables in LOOP
3445 * optimization: faster floating-point SQRT on x86-64
3446 * fixed some bugs revealed by Paul Dietz' test suite:
3447 ** DOCUMENTATION returns NIL instead of "" for method combinations
3448 that don't have a docstring
3450 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3451 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3452 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3453 therefore are not customizeable by user code (as seems to be at
3454 least permitted and maybe required by AMOP). As a consolation,
3455 however, the SBCL implementation of these functions now calls
3456 REINITIALIZE-INSTANCE as specified by AMOP.
3457 * bug fix: slot-definition documentation is propagated as per ANSI
3458 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3459 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3460 argument, as do eslotd initialization methods. (from Pascal
3461 Costanza's "Closer" project)
3462 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3463 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3465 * bug fix: it is now possible to have more than one subclass of
3466 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3467 (reported by Bruno Haible, Pascal Costanza and others)
3468 * bug fix: the dependent update protocol now works for generic
3469 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3470 and Pascal Costanza)
3471 * bug fix: condition-class instances corresponding to
3472 DEFINE-CONDITION forms are now created eagerly. (reported by
3473 Kalle Olavi Niemitalo on comp.lang.lisp)
3474 * bug fix: floating point printing is more accurate in some
3475 circumstances. (thanks to Simon Alexander)
3476 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3477 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3478 * bug fix: callbacks on OS X now preserve stack-alignment.
3479 (thanks to Cyrus Harmon)
3480 * enhancement: the x86-64 disassembler is much better at
3481 disassembling SSE instructions. (thanks to Lutz Euler)
3482 * enhancement: CHECK-TYPE on a variable now allows type-inference
3483 (thanks to Vincent Arkesteijn)
3484 * optimization: improved performance of EUC-JP external format.
3485 (thanks to NIIMI Satoshi)
3486 * optimization: performance improvements to IO on file streams of
3487 :ELEMENT-TYPE CHARACTER
3488 * optimization: much faster memory allocation on x86-64
3489 * optimization: faster garbage collections (latency and throughput)
3491 * optimization: faster bignum subtraction and division on x86 and x86-64
3492 (thanks to Lutz Euler)
3493 * optimization: more accurate type-inference for loops that use a
3494 floating point index variable or a negative step.
3496 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3497 * bug fix: add a workaround to SBCL looping infinitely at startup on
3498 Linux kernels with apparently buggy implementations of personality().
3499 (thanks to Svein Ove Aas)
3500 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3501 (thanks to David Lichteblau)
3502 * bug fix: local bindings shadow global symbol macros for
3503 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3504 * optimization: non-open coded uses of numeric comparison operators
3505 (e.g. >) no longer cons when called with more than one parameter
3506 on platforms supporting dynamic-extent allocation.
3507 * enhancement: saving cores with foreign code loaded is now supported
3508 on MIPS/Linux in addition to the previously supported platforms.
3509 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3510 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3511 * bug fix: division by zero in sb-sprof when no samples were collected
3512 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3513 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3514 (thanks to Alexander Kjeldaas)
3515 * new feature: ignoring the return values of destructive functions
3516 like NREVERSE signals a compile-time style-warning.
3517 (thanks to Kevin Reid)
3518 * new feature: the alignment of alien structure fields can be
3519 explicitly specified. (thanks to Cyrus Harmon)
3520 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3521 and dump core on SIGQUIT
3523 ** incompatible change: threads do not inherit values of specials
3524 from their parents (see manual)
3525 ** bug fix: threads stacks belonging to dead threads are freed by the
3526 next exiting thread, no need to gc to collect thread stacks anymore
3527 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3528 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3529 ** bug fix: dynamic variable and thread start related gc lossage
3530 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3532 * fixed some bugs revealed by Paul Dietz' test suite:
3533 ** SUBTYPEP is slightly more accurate on heinously complicated
3534 CONS types where some of the members have uncertain (in the
3535 NIL, NIL sense) type relationships to each other.
3537 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3538 no longer purified unless :PURIFY T is explicitly specified.
3539 ** Non-purified cores are significantly smaller than before
3541 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3542 * new feature: timers based on Zach Beane's excellent timer package
3543 * added support for the following external formats: koi8-u,
3544 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3545 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3546 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3547 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3548 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3549 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3550 * incompatible change: a threaded SBCL will no longer revert to
3551 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3552 * bug fix: interrupts are disabled until startup is complete; no
3553 more sigsegvs when receiving a signal to soon
3554 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3556 * bug fix: add a workaround for the memory randomization features in
3557 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3558 workaround will only be in effect on systems with the proc filesystem
3560 * bug fix: printing objects of type HASH-TABLE signals a
3561 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3563 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3564 have been running for over 50 days. (reported by Gilbert Baumann)
3565 * bug fix: the logic for getting names of functions gets less
3566 confused when confronded with alternate-metaclass
3567 funcallable-instances. (reported by Cyrus Harmon)
3568 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3569 consistent, even on internal alternate-metaclass objects.
3570 * bug fix: flush closure information collected by physical
3571 environment analysis prepass before the main pass. (bug reported
3573 * bug fix: compiler pack phase does not modify a hashtable, which is
3574 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3575 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3576 may be expanded. (reported by Alexander <malishev> on c.l.l)
3577 * bug fix: no more style-warnings when compiling code using LAST
3578 under high-SPEED low-SPACE settings. (reported by David Wallin
3580 * fixed some incompatibilities between SBCL's MOP and the MOP
3582 ** the METAOBJECT class is now implemented;
3583 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3584 STANDARD-OBJECT, as required;
3585 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3586 now compatible (as required by VALIDATE-SUPERCLASS); there
3587 remains a consistency requirement over the presence or absence
3588 of the FUNCTION class in the superclass list of finalized
3589 classes; see the manual for more details;
3590 ** the :AROUND method for COMPUTE-SLOTS on
3591 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3592 requested slot ordering.
3594 ** bug fix: parent thread now can be gc'ed even with a live
3596 ** bug fix: binding a special with PROGV to no value is not
3597 the same as that symbol not having been bound (thanks to
3599 ** bug fix: binding specials is thread safe (thanks to
3601 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3602 and SB-SPROF do not die with 'no handler for signal XX in
3603 interrupt_handle_now(..)' anymore
3604 ** bug fix: WITH-TIMEOUT works with multiple running threads
3605 * fixed some bugs revealed by Paul Dietz' test suite:
3606 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3607 the :method-class keyword argument.
3609 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3610 * new port: the Solaris operating system on x86 processors is now
3611 mostly supported, though some rough edges in the environment
3612 remain. (thanks to Daisuke Homma)
3613 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3614 space for its heap. (thanks to Thiemo Seufer)
3615 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3616 closures. (thanks to Thiemo Seufer)
3617 * minor incompatible change: eof selects abort in the debugger.
3618 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3619 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3621 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3622 deprecated, and will go away in a future revision of SBCL.
3623 * minor incompatible change: GC-ON and GC-OFF are no longer
3624 implemented with a counter, it does not matter how many times gc
3625 is switched on or off
3626 * bug fix: discriminating functions for generic function classes
3627 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3628 make invalid assumptions about method precedence order. (reported
3630 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3631 platforms. (thanks to Thiemo Seufer)
3632 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3633 * bug fix: correct pathname printing with printer escaping is on.
3634 (thanks to Kevin Reid)
3635 * bug fix: complex VOP definitions in "user-space" no longer trigger
3636 package locks. (reported by Zach Beane)
3637 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3638 for funcallable-instance functions, and is no different from
3640 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3641 characters in the current readtable. (reported by Nicholas Neuss)
3642 * bug fix: SUBTYPEP on various CONS types returns more a more
3643 accurate acknowledgment of its certainty.
3644 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3645 lists in some cases. This partially fixes bug 384.
3646 * flush all standard streams before prompting in the REPL and the
3648 * bug fix: signal handling and triggering gc do not conflict
3649 directly anymore, in particular a high frequency sb-sprof does
3650 not prevent gc from running
3651 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3652 approximation for timezone and DST information between the
3653 universal time epoch and the smallest negative 32-bit time_t.
3654 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3655 year 1899 so long as the encoded time is non-negative.
3656 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3657 the correct answer for non-constant rotate amounts when performing
3658 an inline 32-bit rotation.
3660 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3661 there is only one thread in the session
3662 ** bug fix: memory leak for streams created in one thread and
3663 written to in another
3664 ** bug fix: lockup when compiled with gcc4
3665 ** bug fix: race that allows the gc to be triggered when gc is
3667 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3668 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3670 ** bug fix: finished threads are gc'ed properly
3671 * fixed some bugs revealed by Paul Dietz' test suite:
3672 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3673 has arguments with a different set of applicable methods from
3674 the orignal arguments.
3675 ** The type error thrown by MAP now has a correct expected-type
3677 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3678 name a compiled function.
3679 ** Three MISC tests where a large bignum was improperly coerced to
3680 a float that couldn't represent that bignum during type
3681 derivation were fixed.
3682 ** SUBTYPEP can now handle types involving the negation of a
3683 list-form FUNCTION type.
3684 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3685 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3686 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3688 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3689 * New feature: Experimental support for bivalent streams: streams
3690 opened with :element-type :default now allow character and binary
3691 (unsigned-byte 8) I/O
3692 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3693 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3695 * bug fix: no more highly sporadic "couldn't check whether ~S is
3696 readable" when reading a stream and an interrupt hits in the middle
3697 of a select system call
3698 * compiler better recognizes complex arrays (reported by Eduardo
3700 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3701 for variables on SBCL built with linkage-tables. (reported by Luis
3703 * various error reporting improvements.
3704 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3705 (Thanks to Thiemo Seufer)
3706 * bug fix: nested reader invokations work correctly
3707 * bug fix: it is possible to have simultaneous references to foreign
3708 code and foreign data with the same name.
3710 ** added x86-64 support
3711 ** incompatible change: the threading api now works with thread
3712 objects instead of thread ids
3713 ** bug fix: threads are protected from signals and interruption when
3714 starting up or going down
3715 ** bug fix: a race where an exiting thread could lose its stack to gc
3716 ** bug fix: don't halt on infinite error in threads if possible
3717 ** fixed numerous gc deadlocks introduced in the pthread merge
3718 ** bug fix: fixed thread safety issues in read and print
3719 ** bug fix: debugger doesn't hang on session lock if interrupted at
3720 an inappropriate moment
3721 ** bug fix: run-program is now thread safe(r)
3722 ** bug fix: inner with-recursive-lock no longer releases the mutex
3723 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3724 * fixed some bugs revealed by Paul Dietz' test suite:
3725 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3726 EXPECTED-TYPE slots filled.
3727 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3729 ** MAKE-CONDITION accepts classes as type-designators.
3730 ** COMPILE may never return NIL.
3731 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3732 range before calling Unix time functions
3734 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3735 * numerous signal handling fixes to increase stability
3736 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3737 * minor incompatible change: we now correctly canonize default
3738 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3739 as per the MOP, rather than the historical (INITARG INITFUNCTION
3740 INITFORM). (reported by Bruno Haible)
3741 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3742 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3743 for more information.
3744 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3745 pathname is a directory pathname.
3746 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3747 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3749 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3750 :METACLASS argument in addition to a class name. (reported by
3751 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3752 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3753 (reported by Bruno Haible; patch from Gerd Moellmann)
3754 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3756 * bug fix: more cleanups to the floating point exception handling on
3757 x86-64 (thanks to James Knight)
3758 * bug fix: the compiler does not try to constant fold calls of
3759 COERCE and BIT-* functions when they return freshly constructed
3760 objects. (reported by Nikodemus Siivola and Paul Dietz)
3761 * optimization: improved the MIPS versions of generic (in the
3762 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3763 * optimization: direct conversion of (unsigned-byte 32) to floats on
3764 the PowerPC platform.
3765 * optimization: structure instances with raw slots now use less
3766 memory, and probably show better memory locality. (thanks to
3768 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3769 are treated as requests for stack allocation on the x86-64,
3770 Alpha-32, PPC and SPARC platforms.
3771 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3772 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3773 (thanks to Tony Martinez)
3775 ** gcing a dead thread can no longer lead to lockups
3776 ** threads block signals until they are set up properly
3777 ** errno is no longer shared by threads
3778 ** interrupt-thread restores the eflags register on x86
3779 ** fixed some lockups due to gc/thread interaction
3780 * fixed some bugs revealed by Paul Dietz' test suite:
3781 ** invalid dotted lists no longer raise a read error when
3782 *READ-SUPPRESS* is T
3783 ** signal an error if a symbol that names a declaration is used
3784 as the name of a type, or vice versa
3785 ** allow using the (declare (typespec var*)) abbreviation for
3786 (declare (type typespec var*)) with all type specifiers
3787 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3788 ** always return NIL from PPRINT-POP when OBJECT is NIL
3789 ** don't signal errors when pretty-printing malformed LABELS,
3790 FLET or MACROLET forms
3791 ** declarations in a DOLIST body are also in scope for the
3793 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3795 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3798 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3799 * fixed cross-compiler leakages that prevented building a 32-bit
3800 target with a 64-bit host compiler.
3801 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3802 opened with :IF-EXISTS :OVERWRITE.
3803 * fixed bug 281: error for an invalid qualifier in a short-form method
3804 combination method is not signalled until the faulty method is called.
3805 * bug fix: iteration variable type inferrer failed to deal with open
3806 intervals. (reported by Alan Shields)
3807 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3808 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3809 or more runtime options were provided to the sbcl binary.
3810 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3811 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3812 * optimization: there's now a fast-path for fixnum arguments in the
3813 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3814 * optimization: the code generated on x86-64 is more compact thanks
3815 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3816 * bug fix: floating-point exception handling now partly works on
3817 x86-64. (Thanks to James Knight)
3818 * improvement to the MIPS backend from Thiemo Seufer: C-style
3819 64-bit long long arguments and return values to alien functions
3821 * fixed some bugs revealed by Paul Dietz' test suite:
3822 ** the type-error signalled from WARN has a filled-in DATUM slot.
3823 ** the type-error required when a stream is not associated with
3824 a file has the stream as its datum.
3825 ** type-errors on single-floats on x86-64 no longer have
3826 :INVALID-OBJECT as the datum
3827 ** the type-errors signalled for invalid function names now have
3828 a correct expected type
3829 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3830 for structures defined with a :TYPE. Documentation strings for
3831 typed structures are no longer immediately discarded
3832 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3833 broadcast streams and synonym streams. FILE-LENGTH now also works
3834 on broadcast streams.
3836 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3837 * incompatible change: the --noprogrammer option, deprecated since
3838 version 0.7.5, has been removed. Please use the equivalent
3839 --disable-debugger option instead.
3840 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3842 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3843 inoperational for a while now) has been completely removed.
3844 * null lexical environments are now printed as #<NULL-LEXENV>,
3845 significantly reducing the amount of clutter in typical backtraces.
3846 * documentation on weak pointers, finalization, and after GC hooks
3847 has been added to the manual.
3848 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3849 as other specialized array types, is much faster. SUBSEQ and
3850 COPY-SEQ on such arrays have also been sped up.
3851 * optimization: EQL is now more efficient when at least other argument
3852 is known to be of type (OR FIXNUM (NOT NUMBER)).
3853 * fixed bug: the runtime is now less vulnerable to changes in the
3854 size of the SBCL object on OS X, and virtual memory is reserved for
3855 all spaces that need to be at a fixed address.
3856 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3857 * fixed bug: finalizers and after GC hooks that cause consing are now
3859 * fixed bug: compiler error messages and summaries are now printed to
3860 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3861 * fixed inference of the upper bound of an iteration variable.
3862 (reported by Rajat Datta).
3863 * fixed bug 211e: calling local functions with duplicated constant
3864 keyword argument no longer causes a bogus style warning about an
3866 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3867 ftype declaration to be disregarded. (reported by Dave Roberts)
3868 * fixed bug 373: caused by erronous compilation of references to alien
3869 variables in the runtime on ppc/darwin.
3870 * fixed bug 376: CONJUGATE type deriver.
3871 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3872 (reported by Baughn on #lisp)
3873 * a cross-compiler bug on non-x86 platforms has been identified and
3874 fixed. (thanks to Bruno Haible)
3875 * improvements to the MIPS runtime code for increased stability.
3876 (thanks to Thiemo Seufer)
3877 * increased the maximimum compact environment size to allow
3878 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3879 * partial workaround for bug 135: don't name the function we're
3880 calling for hairy cases of EVAL, so as not to accumulate one environment
3881 entry per call to EVAL. (reported by Kevin Reid)
3882 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3883 * optimization: type testing for non-vector arrays should be faster.
3884 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3886 * bug fix: setting 31st element of a bit vector to zero did not work
3888 * bug fix: redefining a class definition which failed due to a
3889 previous accessor / function clash now works (but see BUGS entry
3890 #380 for more problems in this area). (thanks to Zach Beane)
3891 * the long form of DEFINE-METHOD-COMBINATION disables method group
3892 checking when given a single method group with pattern *. (thanks
3894 * on x86 compiler supports stack allocation of results of simple
3895 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3896 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3897 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3898 * fixed some bugs related to Unicode integration:
3899 ** the restarts for recovering from input and output encoding
3900 errors only appear when there is in fact such an error to
3902 * fixed some bugs revealed by Paul Dietz' test suite:
3903 ** MISC.549 and similar: late transformation of unsafe type
3904 assertions into derived types caused unexpected code
3906 ** SCALE-FLOAT type deriver is less wrong.
3907 ** type derivers for EXP, LOG and similar functions compute result
3908 types for complex arguments better.
3909 ** (MISC.563) CONJUGATE type deriver works for very restricted
3911 ** out-of-line type testers for character strings are available.
3912 ** EQUAL compiler transform understands specialness of objects
3914 ** accessing double-floats stored on the stack now works on x86-64.
3915 ** debugger internals could sometimes create invalid lispobjs,
3916 resulting in GC crashes.
3917 ** MISC.548: type check weakening can convert required type into
3919 ** initialization forms for bindings are not in scope of free special
3922 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3923 * incompatible change: thread support for non-NPTL systems has
3924 been removed - locking is buggy and unreliable. A threaded
3925 SBCL build will now warn at startup and refuse to create
3926 new threads, unless futex support is detected in the kernel
3927 * incompatible change: the top level REPL now has only an ABORT
3928 restart associated with it, not TOPLEVEL and ABORT as it used to.
3929 TOP and TOPLEVEL are now available as debugger commands for
3930 returning to the top level.
3931 * incompatible change: forms evaluated in the REPL now use the
3932 global optimization policy.
3933 * incompatible change: user- and system-initialization files are
3934 no longer processed with LOAD, but by READ and EVAL; hence the
3935 global optimization policy, startup package, readtable, etc,
3937 * The .fasl file format number has been incremented because of
3938 various incompatible changes.
3939 * internal entry point details and argument counts no longer appear
3940 in backtraces unless explicitly requested by setting
3941 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3942 * built-in and standard functions no longer have names like "top
3943 level local call to FOO".
3944 * fixed bug 32: functions defined in non-null lexical environments
3945 now have more legible printed representation
3946 * fixed bug 33: functions defined in non-null lexical environemnts
3947 are now more amenable to inspection by INSPECT.
3948 * workaround for bug 354: XEPs no longer appear in backtraces unless
3949 explicitly requested.
3950 * fixed bug: receiving the signal which results from attempting to
3951 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3952 SIGBUS on other *BSDs) on architectures where the C stack is also
3953 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3954 to debugger confusion or wild instability. (reported by Cheuksan
3956 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3957 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3958 (reported by Lutz Euler)
3959 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3960 compiled code. (reported by Paul Dietz)
3961 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3962 specialized parameter to a method to something that is not TYPEP
3963 the specializer is now possible.
3964 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3965 face of package deletion.
3966 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3967 pathname. (reported by David Tolpin on c.l.l)
3968 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3969 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3970 STRING-STREAM and FILE-STREAM, respectively.
3971 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3972 than previously; in addition, its test suite is now run on build.
3973 (thanks to Luke Gorrie)
3974 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3975 * optimization: added a immediate representation for single-floats
3977 * fixed some bugs revealed by Paul Dietz' test suite:
3978 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3979 ** attempting to create a package with a colliding nickname causes
3980 correctable errors to be signalled.
3981 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3982 ** several x86-64 backend bugs related to sign-extension of immediate
3985 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3986 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3987 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3989 * fixed loading of multiply forward-referenced layouts.
3990 (thanks to Cheuksan Wang)
3991 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3992 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3993 (see COMPILE-FILE documentation for details of :PRINT option)
3994 * fixed bugs 19 and 317: fixed-format floating point printing is
3995 more accurate. This also fixes a bug reported by Adam Warner
3996 related to the ~@F format directive.
3997 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3999 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4000 dispatch table if the from-char is a dispatch macro character.
4001 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4002 by the wordsize no longer ignore the last word. (reported by Lutz
4004 * fixed bug in type checking of dynamic-extent variables. (reported
4006 * optimization: sequence traversal functions use their freedom to
4007 coerce function designators to functions.
4008 * optimization: code with many calls to CLOS methods specialized on
4009 CLOS classes has had redundant type checks removed.
4010 * optimization: added declarations to speed up operations that access
4011 the internal character database (for example STRING-UPCASE)
4012 * optimization: comparison operations between floats and sufficiently small
4013 fixnums no longer create extra rationals
4014 * fixed some bugs related to Unicode integration:
4015 ** portions of multibyte characters at the end of buffers for
4016 character-based file input are correctly transferred to the
4017 start of the buffer at the next read.
4018 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4019 passing it through to OPEN.
4020 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4021 argument given to internal calls to OPEN.
4022 ** the built-in comment readers (introduced by character sequences
4023 ";" and "#|") are more forgiving to encoding errors; they will
4024 STYLE-WARN and then attempt to resync the stream at a character
4025 boundary. (thanks to Teemu Kalvas)
4026 * fixed some bugs in the x86-64 port:
4027 ** Negative short int return values from c-calls are sign-extended
4029 ** The stack is aligned to 16-bytes for c-calls, as required by
4030 the ABI. (thanks to Cheuksan Wang)
4031 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4032 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4033 for enums. (thanks to Vincent Arkesteijn)
4034 ** Multiple small optimizations and bugfixes for floating point
4036 * fixed some bugs revealed by Paul Dietz' test suite:
4037 ** Space, Tab, Linefeed, Return and Page have the invalid
4038 secondary constituent character trait.
4039 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4041 ** WITH-INPUT-FROM-STRING should only update the index place on
4043 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4044 works more reliably.
4045 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4046 with one-dimensional arrays with fill pointers.
4047 ** TYPE-OF failed on a complex with an integer realpart and a
4049 ** compiler failure during type inference for the code of form
4050 (IF (EQL X (THE ...)) ...) (MISC.535).
4052 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4053 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4054 platform. The port supports 61-bit fixnums, large memory spaces
4055 and reloading shared object files.
4056 * enhancement: saving cores with foreign code loaded is now
4057 supported on ppc/Darwin in addition to the previously supported
4059 * enhancement: the statistical profiler now walks deeper into the
4060 call stack for more meaningful call-graphs and accrued time
4061 reports (x86/x86-64 only). It also now reports time spent in
4063 * enhancement: it is now possible to trace most individual methods
4064 of a generic function in addition to tracing the generic function
4066 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4068 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4069 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4070 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4071 produces an error. (thanks to Vincent Arkesteijn)
4072 * bug fix: NAMESTRING on pathnames with :WILD components in their
4073 directories works correctly. (thanks to Artem V. Andreev)
4074 * fixed bug 125: compiler preserves identity of closures. (reported
4076 * bug fixed: functions with &REST arguments sometimes failed with
4077 "Undefined function" when compiled with (DEBUG 3). (reported by
4079 * bug fix: overflow during compiling of setting element of a bit
4080 vector with constant index and value. (reported by Timmy Douglas)
4081 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4082 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4083 * on x86 compiler partially supports stack allocation of dynamic-extent
4085 * GO and RETURN-FROM do not check the extent of their exit points
4086 when compiled with SAFETY 0.
4087 * fixed some bugs related to Unicode integration:
4088 ** encoding and decoding errors are now much more robustly
4089 handled; it should now be possible to recover even from invalid
4090 input or output to the terminal. (thanks to Teemu Kalvas)
4091 ** provided a first cut at implementing STRING-TO-OCTETS and
4092 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4093 ** altered the SB-MD5 contributed module slightly, changing the
4094 interface just enough for it to be supportable for builds where
4095 lisp characters are not eight bits.
4096 * fixed some bugs revealed by Paul Dietz' test suite:
4097 ** the FORMATTER-generated functions for ~V[ conditionals require
4098 the correct number of arguments.
4099 ** READ-FROM-STRING returns the mandated second value when applied
4100 to displaced strings.
4101 ** the #\Rubout and #\Backspace characters are treated as invalid
4102 constituent characters by the tokenizer.
4104 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4105 * new feature: reloading changed shared object files with
4106 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4107 * new feature: references to foreign variables and functions
4108 can now be compiled and loaded before the corresponding shared
4109 object file is loaded, as long as the foreign definitions are
4110 available at runtime.
4111 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4112 supported. (thanks to Dan Debertin)
4113 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4114 just keywords. (thanks to Vincent Arkesteijn)
4115 * fixed bug #331: structure-class instances corresponding to
4116 DEFSTRUCT forms are now created eagerly.
4117 * fixed bug #345: backtraces from calls to undefined functions work
4118 on x86 as well. Related bug #61 is now also partially fixed on x86
4119 (backtraces from throws to unknown catch tags.)
4120 * bug fix: lambda-list parsing is now stricter vrt. order and number
4121 of lambda-list keywords.
4122 * bug fix: as specified by AMOP, an error is signalled if a
4123 class-option appears multiple times in a DEFCLASS form. (reported
4125 * bug fix: RANDOM can be compiled when the compiler derives the type
4126 of its numeric argument as a disjoint set of small integers.
4127 (reported by Paul Dietz)
4128 * bug fix: starting a core saved with shared objects loaded when
4129 those objects are not available no longer causes threaded SBCL to
4130 hang. (reported by Sean Ross)
4131 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4133 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4134 argument, which must always be NIL. (reported by Kalle Niemitalo)
4135 * bug fix: printing 1.0d+23 no longer results in an error.
4136 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4137 * bug fix: structure slot setters preserve evaluation order. (thanks
4139 * fixed some bugs related to Unicode integration:
4140 ** RUN-PROGRAM can allow its child to take input from a Lisp
4141 stream. (reported by Stefan Scholl)
4142 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4143 locales. (reported by Ken Causey)
4144 * fixed some bugs revealed by Paul Dietz' test suite:
4145 ** INCF, DECF and REMF evaluate their place form as specified in
4147 ** FORMATTER expands ~{ ~} iteration directives with V or #
4148 parameters correctly.
4149 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4150 consequent uses no arguments correctly.
4151 ** the system has a partial understanding of the (COMPLEX RATIO)
4153 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4156 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4157 * new feature: a build-time option (controlled by the :SB-UNICODE
4158 keyword feature, enabled by default) for building the system with
4159 support for the entire 21-bit character space defined by the
4161 * new feature: the system now has rudimentary external-format
4162 support; the primary user-visible change at this time is that
4163 characters with the high bit set (such as lower-case-e-acute) will
4164 print correctly to a terminal in a UTF-8 environment.
4165 * minor incompatible change: BASE-CHAR no longer names a class;
4166 however, CHARACTER continues to do so, as required by ANSI.
4167 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4168 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4169 has been moved to the SB-EXT package (temporarily re-exported from
4171 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4172 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4174 * fixed bug #351: better error-handlind and reporting for malformed
4176 * fixed bug #350: bignum-printing is now more memory-efficient,
4177 allowing printing of very large bignums, eg. (expt 2 10000000).
4178 (reported by Bruno Haible)
4179 * fixed bug #302: better primitive-type selection for intersection
4181 * fixed bug #308: non-graphic characters now all have names, as
4182 required. (reported by Bruno Haible)
4183 * bug fix: redefining a class with different superclasses now correctly
4184 removes it from the direct-subclasses of its previous superclasses.
4185 (reported by David Morse)
4186 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4187 new value now works. (reported by Bruno Haible)
4188 * bug fix: correct canonicalization of multiple non-standard slot
4189 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4190 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4191 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4192 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4193 now exists, an signals an error.
4194 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4195 during macroexpansion for non-iteration variables as well. (reported
4196 by Bruno Haible for CMUCL)
4197 * bug fix: Cyclic structures and unprintable objects in compiler
4198 messages no longer cause errors. (reported by Bruno Haible)
4199 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4200 and READ-FROM-STRING all now return a primary value of NIL if
4201 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4202 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4203 (reported by Bruno Haible for CMUCL)
4204 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4205 do not designate a condition. (reported by Bruno Haible for
4207 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4208 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4209 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4210 permitting resolution in favour of any of the conflicting symbols.
4211 (reported by Bruno Haible for CMUCL)
4212 * bug fix: EQUAL compiler optimizations is less aggressive on
4213 strings which can potentially compare true despite having distinct
4214 specialized array element types.
4215 * bug fix: unit enumerations can be defined without dividing by
4216 zero. (thanks to Vincent Arkesteijn)
4217 * FORMAT compile-time argument count checking has been enhanced.
4218 (report from Bruno Haible for CMUCL)
4219 * a partial workaround for the bug 262: the compiler does not try to
4220 inline-expand a local function doing RETURN-FROM from a deleted
4221 BLOCK. (thanks to Peter Denno for the bug report and to David
4222 Wragg for the simple test case)
4223 * fixed some bugs revealed by Paul Dietz' test suite:
4224 ** RENAME-PACKAGE allows all package designators as new package
4226 ** constraint propagation and lambda variable substitution are
4227 more cautious in dealing with partially deleted code.
4228 ** compiler sometimes lost reoptimization passes.
4229 ** CERROR, given a condition as condition designator, passes its
4230 remaining arguments to the continue format control without
4232 ** Case-altering FORMAT directives work correctly on non-ASCII
4234 ** The REAL type specifier handles bounds outside the floating
4235 point ranges without signalling FLOATING-POINT-OVERFLOW.
4236 ** Functions with IR1-transformations can create intercomponent
4237 references to global functions.
4238 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4240 ** FORMAT ~R treats a nil value for its first parameter correctly.
4242 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4243 * enhancement: saving cores with foreign code loaded is now
4244 supported on x86/NetBSD and sparc/Linux in addition to the previously
4245 supported platforms.
4246 * bug fix: on some platforms repeated installations caused multiple
4247 copies of HTML documentation to be installed -- should not happen
4248 any more. (reported by Stefan Scholl)
4249 * bug fix: parsing self-recursive alien record types multiple times
4250 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4251 original patch by Helmut Eller for CMUCL)
4252 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4253 (thanks to Richard Kreuter)
4254 * bug fix: defining classes whose accessors are methods on existing
4255 generic functions in other (locked) packages no longer signals
4256 bogus package lock violations. (reported by François-René Rideau)
4257 * bug fix: special variables as DEFMETHOD parameters no longer have
4258 associated bogus type declarations. (reported by David Wragg and
4260 * bug fix: read-write consistency on streams of element-type
4261 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4262 * bug fix: redefiniton of the only method of a generic function with
4263 no DEFGENERIC no longer emits a full WARNING. In addition,
4264 redefinition of generic functions with no DEFGENERIC to an
4265 incompatible lambda list now signals an error. (thanks to Zach
4267 * bug fix: DEFGENERIC now works even when there's a function of the
4268 same name in an enclosing lexical environment. (thanks to Zach
4270 * fixed compiler failure, caused by instrumenting code during
4271 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4272 * optimization: added loop analysis and improved register allocation
4273 * fixed some bugs revealed by Paul Dietz' test suite:
4274 ** POSITION on displaced vectors with non-zero displacement
4275 returns the right answer.
4276 ** (SIMPLE-STRING) is a valid type specifier for sequence
4278 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4280 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4281 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4283 ** The justification version of the FORMAT ~< directive treats
4284 non-zero minpad parameter correctly.
4286 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4287 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4288 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4289 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4290 the supported interface.
4291 * new feature: Single-stepping of code compiled with DEBUG 2 or
4292 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4293 * new feature: saving cores with foreign code loaded is now
4294 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4295 Timothy Moore's work for CMUCL)
4296 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4297 parameters to * instead of NIL if no initform is supplied.
4298 (reported by Johan Bockgaard)
4299 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4300 correctly when FUNCALL appears as the car of the form. Note:
4301 despite this FUNCALL forms are not currently subject to
4302 compiler-macro expansion. (port of Raymond Toy's fix for the
4303 same from CMUCL, reported by Johan Bockgaard)
4304 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4305 (thanks for Teemu Kalvas)
4306 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4307 case instead of terminating the iteration (thanks for Julian
4308 Squires, Sean Champ and Raymond Toy)
4309 * bug fix: incorrect expansion of defgeneric that caused a style
4310 warning. (thanks for Zach Beane)
4311 * bug fix: slot accessor effective method computation works properly
4312 for classes with multiple non-standard applicable methods on
4313 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4314 * on x86 compiler supports stack allocation of results of LIST and
4315 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4316 CMUCL implementation by Gerd Moellmann)
4317 * fixed some bugs revealed by Paul Dietz' test suite:
4318 ** FORMAT strings with both the ~<~:;~> form of the justification
4319 directive and pretty-printing directives cause an error.
4321 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4322 * incompatible change: the internal functions
4323 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4324 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4325 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4326 instead of the old functions.
4327 * new feature: on platforms where "dladdr" is available foreign
4328 function names now appear in backtraces. (based on Helmut Eller's
4330 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4331 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4333 * documentation: ASDF manual is now distributed with SBCL.
4334 * bug fix: SBCL can now load its contributed modules with REQUIRE
4335 even if the system-provided entries have been removed from
4336 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4338 * bug fix: backtraces involving undefined functions or assembly
4339 routines are more informative. (thanks to Brian Downing)
4340 * bug fix: mutually referent alien structures now work correctly.
4341 (reported by Rick Taube)
4342 * bug fix: structures defined by WITH-ALIEN can be referred to
4343 within other definitions in the same WITH-ALIEN.
4344 * bug fix: division operators (MOD, TRUNCATE and the like) with
4345 constant zero divisors and integer dividends no longer generate
4347 * bug fix: provide default methods for INPUT-STREAM-P and
4348 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4349 * bug fix: improve the detection and resolution of MOP metacycles
4350 (where effective method computation depends on the generic function
4351 having its effective method computed). (reported by Bruno Haible)
4352 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4353 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4354 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4355 * bug fix: pathnames with relative directory components can be
4356 represented relative to default pathnames.
4357 * optimization: in taking the GCD of bignums, reduce the two bignums
4358 to approximately the same size (using Euclid's algorithm) before
4359 applying the more sophisticated binary GCD. (thanks to Juho
4361 * optimization: COUNT on bitvectors now operates word-at-a-time.
4362 * optimization: ASH with a positive, but not necessarily constant,
4363 (leftwards) shift, when in a modular context, is compiled to a
4365 * fixed some bugs revealed by Paul Dietz' test suite:
4366 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4367 if the corresponding argument is NIL.
4368 ** FORMAT directives accepting a minpad parameter treat negative
4370 ** literal commas as character parameters to FORMAT directives are
4372 ** literal spaces directly after ~<Newline> directives within a
4373 format-logical-block (~:< ~@:>) do not induce :FILL-style
4374 conditional newlines.
4375 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4376 as specified: it no longer includes conditional newlines).
4377 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4379 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4380 :PER-LINE-PREFIX argument does not evaluate to a string.
4382 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4383 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4384 the manual for details; for now, package locks can be disabled by
4385 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4386 if no major problems are found then it is likely that they will be
4387 compiled in unconditionally.
4388 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4389 unsupported operators on all platforms. To load a shared library
4390 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4391 object file, link it into a shared library outside of SBCL and
4392 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4394 * bug workaround: ROOM T and the GC were not working together
4395 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4396 reporting facility aren't preserved. That reporting has been
4397 disabled, so now until and unless someone figures out how to make it
4398 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4399 * minor incompatible change: as threatened around sbcl-0.8.0, the
4400 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4401 The symbols are also exported from SB-PCL for backwards
4402 compatibility, but more so than before SB-PCL should be treated as
4403 an implementation-internal package.
4404 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4406 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4407 It is known as of this release not to work on the Alpha, however.
4408 * fixed bug #167: errors signalled due to illegal syntax in method
4409 bodies are now more legible.
4410 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4411 designators and can hence be used with TYPEP.
4412 * fixed bug #333: CHECK-TYPE now ensures that the type error
4413 signalled, if any, has the right object to be accessed by
4414 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4415 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4416 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4418 * fixed bug #334: programmatic addition of slots using specialized
4419 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4420 and :ALLOCATION :CLASS slots.
4421 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4422 float exponents. (rereported by Peter Seibel)
4423 * fixed a bug: #\Space (and other whitespace characters) are no
4424 longer considered to be macro characters in standard syntax by
4425 GET-MACRO-CHARACTER.
4426 * fixed bug: initialization of condition class metaobjects no longer
4427 causes an instance of the condition to be created. (reported by
4429 * fixed bug: it is now possible to have slots such that
4430 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4431 description is neither :INSTANCE nor :CLASS.
4432 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4433 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4434 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4435 non-standard SLOT-DEFINITION-ALLOCATION values.
4436 * fixed bugs: various race conditions handling exiting threads.
4437 CL-PPCRE's thread torture test now passes.
4438 * fixed arguably-a-bug: GC time proportional to number of threads in
4439 system even when most of them are idle
4440 * optimization: improved performance of BIT and SBIT on bit-vectors.
4441 * .fasl file incompatibility: The fasl file version number has
4442 been incremented because of changes associated with package locks.
4444 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4445 * minor incompatible change: the system no longer provides
4446 optimization hints (conditions which are TYPEP
4447 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4448 mode; these hints are still emitted when higher SPEED optimization
4450 * new contrib module: a sampling profiler (profiling by statistical
4451 sampling, rather than by instrumenting functions) is available as
4452 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4453 * the behaviour of the standard function ED is now customizeable by
4454 third parties through a hook variable: see ED's documentation
4455 string for information on the protocol.
4456 * the compiler no longer emits efficiency notes for (FUNCALL X)
4457 when the type of X is uncertain under default optimization
4459 * fixed bug 276: mutating a binding of a specialized parameter to a
4460 method to something that is not TYPEP the specializer is now
4462 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4463 exhibit the required behaviour on the x86 platform. (thanks to
4464 Peter van Eynde, Eric Marsden and Bruno Haible)
4465 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4466 even for difficult arguments. (reported by Peter Graves)
4467 * fixed bug 141a: the backquote printer now descends quoted
4469 * fixed another bug in backquote printing: no more destructive
4470 modification of the form's list structure. (reported by Brian
4472 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4473 move between its address being taken and the call to
4474 interrupt_thread, fixing a crashing race condition.
4475 * the SB-POSIX contrib implementation has been adjusted so that it
4476 no longer exhibits ridiculously poor performance when constructing
4477 instances corresponding to C structs.
4479 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4480 * minor incompatible change: the sb-grovel contrib now treats C
4481 structures as alien (in the sense of SB-ALIEN) objects rather than
4482 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4483 has implications for memory management of client code
4484 (sb-grovel-returned objects must now be manually managed) and for
4485 type safety (alien objects now have full types).
4486 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4487 used to control emission of compiler diagnostics, rather than the
4488 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4489 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4490 quality should be considered deprecated.
4491 * install.sh now installs the user manual as well
4492 * (not quite a new documentable feature, but worth considering in
4493 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4494 beginnings of a semantically meaningful condition hierarchy is
4495 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4497 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4498 designator as the defaults argument.
4499 * fixed bug: Displaced arrays whose displaced-to array has become
4500 too small now cause ARRAY-DIMENSION to signal an error, providing
4501 for safer bounds-checking. (reported by Bruno Haible)
4502 * fixed bug: DEFCLASS slot definitions with identical :READER and
4503 :WRITER names now signal a reasonable error. (reported by Thomas
4505 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4507 * fixed bug: Invalid slot specification errors now print correctly.
4508 (thanks to Zach Beane)
4509 * fixed bug 320: Shared to local slot value transfers in class
4510 redefinitions now happen corrently from superclasses as
4511 well. (reported by Bruno Haible)
4512 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4514 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4515 improper lists correctly. (reported by Bruno Haible)
4516 * fixed bug 313: source-transform for <fun-name> was erroneously
4517 applied to a call of a value of a variable with name <fun-name>.
4518 (reported by Antonio Menezes Leitao)
4519 * fixed bug 307: The obsolete instance protocol ensures that
4520 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4521 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4522 remove dead unknown-values globs from the middle of the stack.
4523 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4524 easier to resume long computations after using *BREAK-ON-SIGNALS*
4525 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4526 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4527 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4528 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4529 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4530 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4532 * fixed a (fairly theoretical) bug in string printing: if
4533 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4534 does not have array-element-type equal to the most general string
4536 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4537 function name. (thanks to Nikodemus Siivola)
4538 * fixed bug: compile-time format string checker failed on
4539 non-closed ~{. (reported by Thomas F Burdick)
4540 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4541 don't warn on legal loop code involving more than one aggregate
4542 boolean. (thanks to Nikodemus Siivola)
4543 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4544 in keyword position to MAKE-PACKAGE was not being reported as
4546 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4547 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4549 * fixed bugs 280 and 312: the checking for multiple definitions in a
4550 file is less likely to become confused by uses of inline
4552 * fixed bug: the #S reader macro performs the keyword coercion
4553 specified for slot names. (reported by Kalle Niemitalo)
4554 * fixed bug: lambda lists may contain symbols whose names start with
4555 & but are not lambda-list-keywords; their occurrence triggers a
4557 * fixed bug 321: define-method-combination argument lambda lists do
4558 not cause invalid code to be generated when &optional or &aux
4559 variables have default values. (reported by Bruno Haible)
4560 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4561 have CLOS classes; this appears also to have fixed reported
4562 instability in stack exhaustion detection.
4563 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4564 MUFFLE-WARNING when no associated restart is present is now
4566 * optimization: rearranged the expansion of various defining macros
4567 so that each expands into only one top-level form in a
4568 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4570 * optimization: used a previously little-used slot in symbols to
4571 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4573 * fixed some bugs revealed by Paul Dietz' test suite:
4574 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4576 ** Fixed an optimization bug related to inheritance of initforms
4577 from local to shared slots.
4578 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4579 ** CAST optimizer forgot to flush argument derived type.
4580 ** print/read consistency on floats is now orders of magnitude
4581 more likely. (thanks also to Bruno Haible for a similar report
4583 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4584 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4585 for objects of type REAL. Make it so.
4586 ** SXHASH is specified (infelicitously) to respect similarity,
4587 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4588 it so. (thanks to Markus Ziegler)
4589 ** on the Alpha, the compiler succeeds in compiling functions
4590 returning a known number of arguments greater than 63.
4591 ** fixed handling of invalid NIL arguments in keyword position
4593 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4595 ** provided a readably-printable representation for RANDOM-STATE
4597 ** ensured that pathnames, where they have a namestring, always
4598 print using #P"..." syntax.
4600 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4601 * Support for the forthcoming 2.0 version of the NetBSD kernel
4602 running on x86 hardware has been added. (thanks to Perry
4603 E. Metzger most immediately, and others for their past work)
4604 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4605 current release version; SBCL's OpenBSD support had been broken
4606 since about the time of OpenBSD's switch to ELF binary format.)
4607 * [placeholder for DX summary]
4608 ** user code with &REST lists declared dynamic-extent, under high
4609 speed or space and low safety and debug optimization policy.
4610 * The manual has been converted to Texinfo format and the debugger
4611 chapter from the cmucl manual has been added.
4612 * A facility has been added to extract documentation strings from
4613 sbcl and store them as Texinfo-formatted snippets for inclusion in
4614 the manual (via Texinfo's @include directive)
4615 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4616 the test case to Dave Roberts)
4617 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4618 pointers. (reported by Sean Ross)
4619 * bug fix: PROFILE output is printed nicely even for large numerical
4620 values. (thanks to Zach Beane)
4621 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4622 greater than 32 handle EOF correctly.
4623 * bug fix: on X86 an immediate argument of the IMUL instruction is
4624 correctly printed in disassembly. (thanks to Lutz Euler)
4625 * bug fix: class slots in redefined classes preserve their old
4626 values. (thanks to Bruno Haible and Nikodemus Siivola)
4627 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4628 succeeds. (reported by Marco Baringer)
4629 * fixed some bugs revealed by Paul Dietz' test suite:
4630 ** READ-SEQUENCE now works on ECHO-STREAMs.
4631 ** RATIONALIZE works more according to its specification. (thanks
4634 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4635 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4636 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4637 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4638 should matter to you only if you rebind the printer control
4639 variables and then find you want different bindings in the
4640 debugger than in the ordinary execution of your program.)
4641 * The runtime build system has been tweaked to support building
4642 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4643 assembler and linker. (thanks to Nikodemus Siivola)
4644 * Unbound, undefined, undeclared variables now trigger full
4645 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4646 more often programmer error than deliberate exploitation of undefined
4648 * optimization: the hash algorithm for strings has changed to one
4649 that is less vulnerable to spurious collisions. (thanks to Juho
4651 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4652 needless bounds checking. (thanks to Juho Snellman)
4653 * optimization: implemented multiplication as a modular
4654 (UNSIGNED-BYTE 32) operation on the PPC backend.
4655 * fixed some bugs revealed by Paul Dietz' test suite:
4656 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4658 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4659 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4660 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4662 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4664 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4666 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4667 their output stream on EOF from read.
4668 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4669 have been read to end-of-file.
4670 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4672 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4673 description of determination of which consecutive characters
4675 ** Printing the "Space" character with escaping on now yields "#\\ ",
4676 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4677 ** Reading floating-point numbers with *READ-BASE* set to a number
4678 less than 10 works correctly.
4679 ** Reading floating-point numbers with *READ-BASE* set to a number
4680 more than 10 works correctly.
4681 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4682 the readtable currently in effect.
4684 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4685 * minor incompatible change: parsing of namestrings on a physical
4686 (Unix) host has changed; numbers after the final #\. in a
4687 namestring are no longer interpreted as a version field. This is
4688 intented to be largely invisible to the user, except that the
4689 meaning of the namestring "*.*.*" has changed: it now refers to a
4690 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4691 should usually be replaced by
4692 (make-pathname :name :wild :type :wild :version :wild)
4693 with the added benefit that this is more likely to be portable.
4694 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4695 option to OPEN now signals an error if the file being opened
4696 exists; this may have an impact on existing code.
4697 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4698 signals received, on the PowerPC platforms (both Linux and
4699 Darwin). (thanks to Pierre Mai for pointing out the location of
4701 * several fixes on OS X: The system now builds and runs cleanly on
4702 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4703 (thanks to Brian Mastenbrook)
4704 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4705 second-resolution: integer multiples of 1/3600 between -24 and 24.
4706 (thanks to Vincent Arkesteijn)
4707 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4708 type when called with 1 argument; PEEK-CHAR checked type of
4709 PEEK-TYPE only after having read first character from a
4710 stream. (reported by Peter Graves)
4711 * bug fix: the garbage collector now has much better locality
4712 behaviour, and in particular no longer treats all memory as being
4713 exhausted when many small objects point to each other in a deeply
4715 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4716 recognized as being TYPEP their class.
4717 * bug fix: the PUSHNEW documentation string has been corrected.
4718 (thanks to Vincent Arkesteijn)
4719 * bug fix: defaulting of the value for the last of an atypically
4720 large number of multiple values being bound was not being
4721 performed correctly on the Alpha or PPC platforms
4722 * optimization: implemented multiplication as a modular
4723 (UNSIGNED-BYTE 32) operation on the x86 backend.
4724 * optimization: SEARCH on simple-base-strings can now be open-coded.
4725 (see also contrib/compiler-extras.lisp for inspiration for
4726 teaching the compiler about the Boyer-Moore algorithm).
4727 * value, returned by MAX (and MIN) called with several EQUALP, but
4728 not EQL, arguments now does not depend on compiler settings.
4729 * fixed some bugs revealed by Paul Dietz' test suite:
4730 ** in stack analysis liveness information is propagated from
4731 non-local entry points.
4732 ** pathwise CAST removing failed when the CAST node did not start
4734 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4735 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4737 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4738 host is already defined.
4739 ** RENAME-FILE works on streams instead of signalling an internal
4741 ** PEEK-CHAR uses the current readtable when determining whether
4742 or not a character is whitespace.
4743 ** MERGE-PATHNAMES handles the case when the pathname does not
4744 specify a name while the default-pathname specifies a version.
4745 ** Pathnames now stand a better chance of respecting print/read
4747 ** Attempting to use standardized file system operators with a
4748 pathname with invalid :DIRECTORY components signals a
4750 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4752 ** DIRECTORY on logical pathnames is more correct.
4753 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4754 signal a TYPE-ERROR if their argument is not a stream.
4755 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4756 designator argument does not designate a stream.
4757 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4758 examining the synonym.
4759 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4761 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4762 element-type larger than ([UN]SIGNED-BYTE 32).
4764 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4765 * When built with the :SB-FUTEX feature, threaded builds now take
4766 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4767 for faster/more reliable mutex and condition variable support.
4768 * Incompatible change (but one you probably shouldn't have been using
4769 anyway): the interface and code for arbitrating between multiple
4770 threads in the same user session has been redesigned.
4771 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4772 error when called without an explicit environment argument.
4773 (thanks to Nikodemus Siivola)
4774 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4775 confused about their position. (thanks to Adam Warner and Gerd
4777 * bug fix: Pretty printing backquoted forms with unquotations in the
4778 argument list position of various code constructs such as LAMBDA
4779 now works correctly. (reported by Paul Dietz)
4780 * bug fix: Pretty printing unquotations no longer loses all
4781 stream position information.
4782 * optimization: performance of string output streams is now less
4783 poor for multiple small sequence writes.
4784 * optimization: performance of CSUBTYPEP in the presence of complex
4785 expressions involving CONS and NOT many times has been improved.
4786 (reported by Paul Dietz)
4787 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4789 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4790 streams for the REPL, for the debugger, and so on. (thanks to
4792 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4793 * fixed some bugs revealed by Paul Dietz' test suite:
4794 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4795 is ignored if it is too small, rather than propagating through
4796 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4797 ** extremely complex negations of CONS types were not being
4798 sufficiently canonicalized, leading to inconsistencies in
4800 ** VALUES tranformer lost derived type.
4802 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4803 * fixed a bootstrapping bug: the build process no longer assumes
4804 that the various BOOLE-related constants have the same value in
4805 host and target lisps. (noted by Paul Dietz' test suite on an
4806 SBCL binary built from CLISP)
4807 * The system can now be dynamically linked on the MIPS platform,
4808 which enables dynamic loading of foreign code from Lisp. (thanks
4809 to Ralf Baechle for discussions on the MIPS ABI)
4810 * The system now records debugging information for its own source
4811 files in a filesystem-position-independent manner, relative to
4812 the "SYS" logical host.
4813 * fixed a compiler bug: MV-LET convertion did not check references
4814 to the "max args" entry point. (reported by Brian Downing)
4815 * tweaked disassembly notes to be less confident about proclaiming
4816 some instruction as an LRA. (thanks to Brian Downing)
4817 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4818 now each have their own history, command character, and other
4819 characteristics. (thanks to David Lichteblau)
4820 * fixed some bugs revealed by Paul Dietz' test suite:
4821 ** compiler failure in compiling LOGAND expressions including a
4823 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4824 shift greater than 32.
4825 ** FLUSH-DEST did not mark blocks for type check regeneration.
4826 ** HANDLER-CASE failed to accept declarations in handler clauses
4827 in some circumstances.
4829 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4830 * New code in contrib/sb-introspect (still probably not entirely
4831 stable yet) provides some support for smart Lisp development
4832 environments like SLIME.
4833 * The conditions signalled for errors occurring when loading .fasl
4834 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4835 in a way which should help ASDF recover gracefully.
4836 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4837 stuff has been cleaned up. If you code contrib/ stuff, this might
4838 affect you, and you can look at contrib/README, contrib/STANDARDS,
4839 and/or the 0.8.4.27 diff to check.
4840 * In full calls the compiler now does not generate checks for declared
4841 argument types for all arguments.
4842 * various threading fixes
4843 ** and some experimental patches which didn't make it into
4844 the main tree for this release, but which are shipped in
4845 contrib/experimental-thread.patch as a possible fix for some
4846 failures (deadlock, spinning...) in GC-intensive multithreaded
4848 * fixed PPC build problem (source code incompatibility of different
4849 library versions): added offsetof() hackery which attempts to divine
4850 where glibc maintainers put uc_mcontext today
4851 * fixed bug 282: compiler does not trust type assertions while passing
4852 arguments to a full call.
4853 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4854 &OPTIONAL VALUES type parameter.
4855 * fix bug 214: algorithm for noting rejected templates is now more
4856 similar to that of template seletion. (also reported by rydis on
4858 * fixed bug 141b: printing backquoted information readably and prettily
4859 inserts a space where necessary.
4860 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4861 (CHARACTER 10) are now reported as errors, rather than propagated
4862 as unknown types. (reported by piso on #lisp)
4863 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4864 with values NIL and :ERROR. (thanks to Milan Zamazal)
4865 * fixed bug 191c: CLOS now does proper keyword argument checking as
4866 described in CLHS 7.6.5 and 7.6.5.1.
4867 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4868 longer raise an error; further, using a list as a for-as-arithmetic
4869 counter now raises a meaningful error.
4870 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4871 now understood by sequence creation functions such as MAKE-SEQUENCE
4873 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4874 a STRING-INPUT-STREAM.
4875 * compiler enhancement: SIGNUM is now better able to derive the type
4877 * type declarations inside WITH-SLOTS are checked. (reported by
4879 * fixed some bugs revealed by Paul Dietz' test suite:
4880 ** incorrect optimization of TRUNCATE for a positive first
4881 argument and negative second.
4882 ** compiler failure in let-convertion during flushing dead code.
4883 ** compiler failure while deriving type of TRUNCATE on an
4884 interval, containing 0.
4885 ** ASH of a negative bignum by a negative bignum count now returns
4887 ** intersection of CONS types now canonicalizes properly, fixing
4888 inconsistencies in SUBTYPEP.
4890 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4891 * incompatible change: The --disable-debugger command line
4892 option now clobbers the debugger at a more fundamental
4893 level, by redefining #'INVOKE-DEBUGGER instead of by
4894 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4895 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4896 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4897 enter the debugger REPL and then suffer recursive errors
4898 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4899 while under the new system, BREAK in --disable-debugger mode
4900 terminates the system just as an unhandled error would.
4901 * fixed compiler performance when processing loops with a step >1;
4902 * bug fix: DOCUMENTATION now retrieves generic function
4903 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4904 support has been systematized, and now supports the methods
4905 specified by ANSI, along with a default method and a method for
4906 slot documentation. (reported by Nathan Froyd)
4907 * bug fix: effective methods associated with a generic function are
4908 no longer cached over a change of that generic function's method
4909 combination. (reported by Andreas Fuchs)
4910 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4911 names a non-existent directory. (thanks to Andreas Fuchs)
4912 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4913 the PPC platform, lead to stack corruption; this has been fixed.
4914 (reported by Rainer Joswig)
4915 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4916 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4917 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4918 arithmetic in general, is now much more reliable on the PPC
4920 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4921 platform now returns the right answer.
4922 * optimization: restored some effective method precomputation in
4923 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4924 precomputation is now tunable.
4925 * optimization: compiler-internal data structure use has been
4926 reviewed, and changes have been made that should improve the
4927 performance of the compiler by about 20%.
4928 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4929 simple-base-strings and simple-bit-vectors is improved.
4930 * optimization: the optimization of 32-bit logical and arithmetic
4931 functions introduced in version 0.8.3 on the x86 has been
4932 implemented on the mips, ppc and sparc platforms; an
4933 implementation of the same facility, but for 64-bit arithmetic,
4934 has been added for the alpha.
4935 * microoptimization: the compiler is better able to make use of the
4936 x86 LEA instruction for multiplication by constants.
4937 * bug fix: in some situations compiler did not report usage of
4938 generic arithmetic in (SPEED 3) policy.
4939 * bug 145b fix: compiler used wrong type specifier while converting
4940 MEMBER-types to numeric.
4941 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4943 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4944 index argument now works properly on the Alpha platform.
4945 * bug fix: floating point exception treatment on the Alpha platform
4947 * bug fix: FILE-POSITION works much better on string input and
4948 output streams. (thanks to Nikodemus Siivola)
4949 * bug fix: many threading/garbage collection symptoms sorted.
4950 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4951 might be pseudo-atomic.
4952 * internal change: Stopping for GC is now done with signals not
4953 ptrace. GC is now done in whichever thread wanted it, instead of
4955 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4957 * bug fix: result form in DO is not contained in the implicit
4959 * incompatible change: ICR structure is changed; the value part of
4960 CONTINUATION is now called LVAR; corresponding functions are
4961 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4962 * added type deriver for ISQRT (thanks to Robert E. Brown).
4963 * bug fix: better support for loading from the command line when an
4964 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4966 * fixed some bugs revealed by Paul Dietz' test suite:
4967 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4968 ** ROUND and FROUND now give the right answer when given very
4969 small float arguments.
4970 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4972 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4973 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4974 ** LCM should return a non-negative integer.
4975 ** PARSE-INTEGER returned the index of a terminator instead of the
4976 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4977 ** PARSE-INTEGER returned an incorrect index being applied to a
4979 ** LCM with two arguments of 0 returns 0 rather than signalling
4981 ** unsigned addition of a 32-bit constant with the high bit set no
4982 longer causes an internal compiler error on the x86.
4983 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4984 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4985 with negative last argument.
4986 ** byte specifiers with zero size and position no longer cause
4987 an error during type derivation.
4988 ** bignum multiplication on the Alpha platform now returns the
4990 * porting: The system now builds on SuSE AMD64, although it still
4991 generates a 32-bit binary.
4992 * .fasl file incompatibility: The fasl file version number has
4993 been incremented (because of the changes to internal compiler
4994 data structures referred to above).
4996 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4997 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4998 more accurately, on the Darwin kernel running on PowerPC hardware.
4999 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5000 * Compiler code deletion notes now signal a condition of type
5001 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5002 an associated MUFFLE-WARNING restart.
5003 * The compiler now performs limited argument count validation of
5004 constant format strings in FORMAT, and where appropriate in ERROR,
5005 CERROR and WARN. (thanks to Gerd Moellmann)
5006 * New ASDF-INSTALL contrib can be used for automatic download and
5007 installation of third-party Lisp code from CCLAN or other sites
5009 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5010 which forces another thread to execute a function supplied by the
5012 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5013 now accept and act upon their :ELEMENT-TYPE keyword argument.
5014 (reported by Martin Atzmueller, Edi Weitz)
5015 * bug fix: FILE-POSITION now accepts position designators up to
5016 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5017 is the greater. (thanks to Patrik Nordebo)
5018 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5019 Kalle Olavi Niemitalo)
5020 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5021 printable. (reported by Eric Marsden)
5022 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5023 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5024 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5025 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5026 (thanks to Stig Sandoe)
5027 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5028 UNREAD-CHAR now correctly includes the unread character in the
5029 target sequence. (thanks to Gerd Moellmann)
5030 * bug fix in threaded builds: the system can now be suspended and
5031 resumed by shell job control with minimal disruption.
5032 * bug fixes in times and timezones >2038AD
5033 * better handling of "where is GNU make?" problem in build scripts
5034 (thanks to Nikodemus Siivola)
5035 * new optimization: inside a named function any reference to a
5036 function with the same name is considered to be a self-reference;
5037 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5038 optimization quality.
5039 * new optimization on x86: logical functions and + now have
5040 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5041 used when the result is truncated to 32 bits.
5042 * VALUES declaration is partially enabled.
5043 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5044 * fixed some bugs revealed by Paul Dietz' test suite:
5045 ** The system now obeys the constraint imposed by
5046 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5047 types form a lattice under type intersection.
5048 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5049 ** ASSOC now ignores NIL elements in an alist.
5050 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5051 and (1+ MOST-POSITIVE-FIXNUM) answers.
5052 ** The addition of a method with invalid qualifiers to a generic
5053 function does not cause an error to be signalled immediately;
5054 a warning is signalled, and the error is generated only on
5055 calling the generic function.
5056 * changed .fasl file version number, in part to add type codes for
5057 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5058 obscure ANSI requirements
5060 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5061 * fixed bug 148: failure to inline-expand a local function left
5062 garbage, confusing the compiler.
5063 * fixed bugs 3cd: structure slot readers perform type check if the
5064 slot can have an invalid value (i.e. it is either not initialized
5065 or can be written with a less specific slot writer).
5066 * bug fix: the compiler now traps array references to elements off
5067 the end of an array; previously, the bounds checking in some
5068 circumstances could go off-by-one.
5069 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5071 * type declarations for array element types now obey the description
5072 on the CLHS page "Declaration TYPE", as per discussions on
5073 sbcl-help around 2003-05-08. This means that a declaration
5074 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5075 declaration, all references to BAR will be asserted or assumed
5076 (with THE, so dependent on compiler policy) to involve objects of
5077 type FOO. Note that no such declaration is implied in
5078 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5079 * declared types of functions from the "Conditions"
5080 chapter. (reported by Paul Dietz)
5081 * bug fix: CERROR accepts a function as its first argument.
5082 * bug fix: NTH an NTHCDR accept a bignum as index
5083 arguments. (reported by Adam Warner)
5084 * optimization: character compare routines now optimize comparing
5085 against a constant character. (reported by Gilbert Baumann)
5086 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5087 argument now works properly on the MIPS platform.
5088 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5089 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5090 declared to have a functional type, does not cause an error
5092 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5093 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5094 * fixed bug: if last continuation of a deleted block has a
5095 destination, this destination should be deleted too. (reported by
5097 * fixed a bug in the bootstrap process: the host compiler's values
5098 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5099 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5100 test case from Patrik Nordebo)
5101 * improved the ability of the disassembler on the PPC platform to
5102 provide helpful disassembly notes.
5103 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5104 the class in more cases than previously.
5105 * bug fix: FILE-POSITION now understands :START and :END for
5106 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5107 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5108 8) data. (thanks to David Lichteblau)
5109 * bug fix: it is possible to add a method to a generic function
5110 without lambda list.
5111 * bug fix: reader failed to signal END-OF-FILE inside an
5112 object representation. (reported by Nikodemus Siivola)
5113 * fixed some bugs revealed by Paul Dietz' test suite:
5114 ** LAST and [N]BUTLAST should accept a bignum.
5115 ** condition slot accessors are methods.
5116 ** (VECTOR NIL) is a subtype of STRING.
5118 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5119 * minor incompatible change: some nonsensical specialized lambda
5120 lists (used in DEFMETHOD) which were previously ignored now signal
5122 * minor incompatible change: the system is now aware of the types of
5123 variables in the COMMON-LISP package, and will signal errors for
5124 most violations of these type constraints (where previously they
5125 were silently accepted).
5126 * minor incompatible change: COMPILE-FILE now uses the freedom
5127 afforded (ANSI 3.2.2.3) to use derived function types for
5128 functions defined in the same file. This also permits the system
5129 to warn on static type mismatches and function
5130 redefinition. (Currently it does not work with high DEBUG level.)
5131 * minor incompatible change: VALUES declaration is disabled.
5132 * When issuing notes, the compiler now signals a condition of type
5133 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5134 restart for use in user handlers. It is expected that the
5135 COMPILER-NOTE condition will eventually become a condition
5136 supertype to a hierarchy of note types, which will then be
5137 handleable in a similar fashion. However, at the moment, no such
5138 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5139 but it's an implementation detail, not a classification for the
5141 * Changes in type checking closed the following bugs:
5142 ** type checking of unused values (192b, 194d, 203);
5143 ** template selection based on unsafe type assertions (192c, 236);
5144 ** type checking in branches (194bc).
5145 * A short form of VALUES type specifier has ANSI meaning (it has
5146 increased the number of situations when SBCL cannot perform type
5148 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5149 keywords or constants is permissible.
5150 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5151 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5152 classes. (thanks to Antonio Martinez)
5153 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5154 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5155 argument to a pretty-print stream. Instead, it leaves any such
5156 operations to DESCRIBE-OBJECT methods.
5157 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5159 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5160 lambda lists. (thanks to David Lichteblau)
5161 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5162 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5163 (thanks to Gerd Moellmann)
5164 * fixed bug 246: increased compilation speed of long
5165 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5167 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5169 * DEFCONSTANT now throws a condition of type
5170 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5171 constant to a non-EQL value; CONTINUE and ABORT restarts
5172 respectively change and preserve the value.
5173 * fixed bug 63: The code walker, part of the implementation of CLOS,
5174 is now better at handling symbol macros.
5175 * bug fix: There is no longer an internal implementation type named
5176 CL:LENGTH. (reported by Raymond Toy)
5177 * bug fix: In macro-like defining macros/special operators the
5178 implicit block does not enclose the lambda list.
5179 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5180 enclosed in parentheses) are not suitable as type specifiers, and
5181 their use properly signals an error now.
5182 * bug fix: An argument count mismatch for a type specifier in code
5183 being compiled no longer causes an unhandled error at compile
5184 time, but signals a compile-time warning.
5185 * fixed simple vector readable printing
5186 * bug fix: DESCRIBE takes more care over whether the class
5187 precedence list slot of a class is bound before accessing it.
5188 (reported by Markus Krummenacker)
5189 * bug fix: FORMATTER can successfully compile pretty-printer format
5190 strings which use variants of the ~* directive inside.
5191 * bug fix: SEARCH now applies its TEST predicate to the elements of
5192 the arguments in the correct order. (thanks to Wolfhard Buss)
5193 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5194 in type inference. (thanks to Robert E. Brown)
5195 * bug fix: Reading in symbols with an explicit package name of ""
5196 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5197 * fixed some bugs revealed by Paul Dietz' test suite:
5198 ** NIL is now allowed as a structure slot name.
5199 ** Arbitrary numbers, not just REALs, are allowed in certain
5200 circumstances in LOOP for-as-arithmetic clauses.
5201 ** Multiple class redefinitions before slot access no longer
5202 causes a type error.
5203 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5204 association between the name and a class.
5205 ** Generic functions with non-standard method-combination and over
5206 five methods all of which return constants no longer return NIL
5207 after the first few invocations. (thanks to Gerd Moellmann)
5208 ** CALL-NEXT-METHOD with no arguments now passes the original
5209 values of the arguments, even in the presence of assignment.
5210 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5212 ** DISASSEMBLE works with closures and funcallable instances.
5213 ** ADD-METHOD now returns the generic function, not the new method.
5214 ** FIND-METHOD signals an error if the lengths of the specializers
5215 is incompatible with the generic function, even if the ERRORP
5217 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5218 which its argument is a member.
5219 ** DEFCLASS only redefines the class named by its class-name
5220 argument if that name is the proper name of the class;
5221 otherwise, it creates a new class.
5222 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5223 of the UNBOUND-SLOT condition to the name of the slot.
5224 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5225 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5226 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5227 SLOT-MAKUNBOUND in the specified fashion.
5229 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5230 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5231 cross-compilation host. As a consequence, we can now bootstrap our
5232 way up to SBCL starting with a bare gcc toolchain and human-readable
5233 source code (first the source to CLISP, then the source to SBCL).
5234 * A contributed module containing a partial implementation of the
5235 simple-streams interface has been included. (thanks to Rudi
5237 * A contributed module implementing the RFC1321 Message Digest
5238 Algorithm, known as MD5, has been included.
5239 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5240 no longer has any effect, as the code controlled by this feature
5241 has been deleted. (As far as we know, no-one has ever built using
5242 this feature, and its semantics were confused in any case).
5243 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5244 work on conditions (as required by the ANSI specification),
5245 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5246 expected behaviour on conditions. Users should note, however,
5247 that such behaviour is not required by the ANSI specification,
5248 and so use of this behaviour may render their code unportable.
5249 * fixed some bugs revealed by Paul Dietz' test suite:
5250 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5252 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5253 ** SXHASH on condition objects no longer returns NIL.
5254 ** :ALLOCATION :CLASS slots are better treated; their values are
5255 updated on class redefinition, and initforms inherited from
5256 superclasses are applied.
5257 ** REMOVE-METHOD returns its generic function argument even when
5258 no method was removed.
5259 ** SHARED-INITIALIZE now initializes the values of the requested
5260 slots, including those with :ALLOCATION :CLASS.
5261 ** ALLOCATE-INSTANCE now works on structure classes defined via
5262 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5264 ** SLOT-EXISTS-P now works on conditions, as well as structures
5266 ** MAKE-LOAD-FORM now has the required methods on
5267 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5268 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5269 keyword, and now implements the SLOT-NAMES argument.
5270 ** methods with &OPTIONAL arguments no longer allow too many
5271 arguments to be passed in the call without error.
5272 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5273 option is consistent with the required arguments of the generic
5274 function lambda list.
5275 * bug fix: REQUIRE accepts a string designator. (Thanks to
5277 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5278 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5279 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5280 * bug fix: The compiler now checks for duplicated variables in macro
5282 * bug fix: SETQ on globals returns the correct value.
5283 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5284 not a COMPILER-ERROR (followed by some other strange error on
5285 choosing the CONTINUE restart).
5286 * bug fix: make.sh and friends are now more consistent in the way that
5287 they look for GNU "make".
5289 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5290 * experimental native threads support (on x86 Linux >=2.4 only).
5291 This is not compiled in by default: you need to add :SB-THREAD to
5292 the target features. See the "Beyond ANSI" chapter of the manual
5294 * fix for longstanding nonANSIism: The old distinction between
5295 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5296 The return value from CL:FIND-CLASS is now a CLOS class, and
5297 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5298 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5299 * An interface to the MetaObject Protocol, as described in Kiczales,
5300 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5301 MIT Press, 1991, is available from the SB-MOP package.
5302 * incompatible change: the SB-PCL package should now be considered
5303 a private implementation detail, and no longer a semi-private MOP
5305 * minor incompatible change: due to rearrangement for threads, the
5306 control stack and binding stack are now allocated at arbitrary
5307 addresses instead of being hardcoded per-port. Users affected by
5308 this probably have to be doing advanced things with shared
5309 libraries, and will know who they are.
5310 * minor incompatible change: Previously, all --eval forms used were
5311 processed with READ before any of them were processed with EVAL.
5312 Now each --eval form is processed with both READ and EVAL before
5313 the next --eval form is processed. (Thus package operations like
5314 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5315 work as the user might reasonably expect.)
5316 * minor incompatible change: *STANDARD-INPUT* is now only an
5317 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5319 * minor incompatible change: Y-OR-N-P is now character-oriented,
5320 not line oriented. Also, YES-OR-NO-P now works without errors.
5321 (thanks to Antonio Martinez)
5322 * sb-aclrepl module improvements: an integrated inspector, added
5323 repl features, and a bug fix to :trace command.
5324 * Known functions, which cannot be open coded by the backend, are
5325 considered to be able to check types of their arguments. (fixing
5326 a bug report by Nathan J. Froyd)
5327 * fixed a bug in computing method discriminating functions: It is
5328 now possible to define methods specialized on classes which have
5329 forward-referenced superclasses. (thanks to Gerd Moellmann)
5330 * fixed evaluation order in optional entries (reported by Gilbert
5332 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5333 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5334 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5335 required-by-AMOP NAME argument, as well as CLASS and
5336 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5337 * fixed bug 20: DEFMETHOD can define methods using names that are
5338 not the proper names of classes to designate class specializers.
5339 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5340 Unix file descriptors, instead of blowing up. (thanks to Antonio
5342 * Garbage collection refactoring: user-visible change is that a
5343 call to the GC function during WITHOUT-GCING will not do garbage
5344 collection until the end of the WITHOUT-GCING. If you were doing
5345 this you were probably losing anyway.
5346 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5347 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5348 TYPEP the latter but not the former.
5349 * The compiler issues a full WARNING for calls to undefined functions
5350 with names from the CL package.
5351 * MAP-INTO for a vector destination is open coded. (reported by
5352 Brian Downing on c.l.l)
5353 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5354 documentation string.
5355 * fixed some bugs revealed by Paul Dietz' test suite:
5356 ** COPY-ALIST now signals an error if its argument is a dotted
5358 ** Condition slots are now accessed more correctly in the presence
5359 of multiple initargs for a given slot.
5360 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5361 exclude restarts of the same name associated with a different
5363 ** DEFCLASS of forward-referenced classes with another
5364 forward-referenced class in the superclasses list no longer
5366 ** Condition slots are now initialized once each, not multiple
5367 times. (thanks to Gerd Moellmann)
5368 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5370 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5371 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5372 arguments contain duplicated elements.
5373 ** RESTART-CASE understands local macros.
5374 ** RESTART-CASE associates exactly its own restarts with a condition.
5375 ** ENDP in safe mode checks its argument to be of type LIST.
5376 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5377 in question is unbound.
5378 ** Optimized MAKE-INSTANCE functions no longer cause internal
5379 assertion failures in the presence of duplicate initargs.
5380 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5381 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5382 propagated even in the ctor optimized implementation of
5384 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5386 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5387 * a better implementation of SXHASH on (simple) bit vectors,
5388 measured both in execution speed and in distribution of results
5389 over the positive fixnums, has been installed. Likewise, a better
5390 implementation of EQUAL for simple bit vectors is now available.
5391 * fixed CEILING optimization for a divisor of form 2^k.
5392 * fixed bug 240 (emitting extra style warnings "using the lexical
5393 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5394 by Antonio Martinez)
5395 * fixed SXHASH, giving different results for NIL depending on type
5396 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5397 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5398 variable. (found by Rolf Wester)
5399 * SBCL does not ignore type declarations for special
5400 variables. (reported by rif on c.l.l 2003-03-05)
5401 * some bug fixes in contrib/sb-aclrepl/
5402 * fixed some bugs revealed by Paul Dietz' test suite:
5403 ** a bug in the CONS type specifier, whereby the CAR and CDR
5404 types got intertwined, has been fixed;
5405 ** the type system is now able to reason about the interaction
5406 between INTEGER and RATIO types more completely;
5407 ** APPEND, [N]REVERSE and NRECONC check that those their
5408 arguments, which must be proper lists, are really so;
5409 ** An array specialized to be unable to hold elements has been
5410 implemented, as required -- yes, really -- by ANSI;
5411 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5412 on malformed property lists;
5414 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5415 * incompatible packaging change: in line with Unix convention,
5416 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5417 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5418 * REQUIRE and PROVIDE are now optionally capable of doing something
5419 useful. See the documentation string for REQUIRE.
5420 * infrastructure for a managed SBCL contrib system: contributed
5421 modules in this release include:
5422 ** the ASDF system definition facility;
5423 ** an interface to the BSD Sockets API;
5424 ** an ACL-like convenience interface to the repl;
5425 (thanks to Kevin Rosenberg)
5426 ** an implementation of ROTATE-BYTE, with efficient implementation
5428 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5429 gives a closer approximation to the right answer than previously.
5430 (thanks to Raymond Toy)
5431 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5432 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5433 optional environment arguments, as required by ANSI.
5434 * fixed bugs in other functions taking environment objects, allowing
5435 calls with an explicit NIL environment argument to be compiled
5437 * fixed bug 228: primary return values from
5438 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5439 COMPILE or FUNCTION.
5440 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5441 :TYPE will no longer signal errors on innocuous objects.
5442 * fixed bug 231b: SETQ is better at respecting type declarations in
5443 the lexical environment.
5444 * fixed a bug in DEFCLASS: classes named by symbols with no or
5445 unprintable packages can now be defined.
5446 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5447 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5448 * fixed compiler failure related to checking types of functions.
5449 (reported by Robert E. Brown)
5450 * the compiler is now much more consistent in its error-checking
5451 treatment of bounding index arguments to sequence functions: in
5452 (SAFETY 3) code, errors will be signalled in almost all cases if
5453 invalid sequence bounding indices are passed to functions defined
5454 by ANSI to operate on sequences.
5455 * fixed a bug in the build procedure: documentation of SBCL-specific
5456 packages is now preserved and available in the final Lisp image.
5457 * lifted FDEFINITION lookup out of loops in the implementation of
5458 many list operations. (thanks to Robert E. Brown)
5459 * fixed a bug in the reader: the #n# reader macro now works for
5460 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5461 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5462 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5463 E. Brown and Tony Martinez respectively)
5464 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5465 SLOT-BOUNDP: in particular, it is now able to optimize them much
5466 better, and is now not vulnerable to having packages renamed.
5467 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5468 always called when a slot is not present in an instance. (thanks
5470 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5471 longer signal an error on unreading a character following EOF on
5472 the previous constituent stream. (thanks to Tony Martinez)
5473 * fixed some bugs revealed by Paul Dietz' test suite:
5474 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5475 not just nonnegative fixnums;
5476 ** the logical bit-array operators such as BIT-AND now accept an
5477 explicit NIL for their "opt-arg" argument (to indicate a
5478 freshly-consed result bit-array);
5479 ** ELT now signals an error on an invalid sequence index in safe
5481 ** the type system is now cleverer about negations of numeric
5482 types, and consequently understands the BIGNUM and RATIO types
5484 ** the type system is now cleverer about the interaction between
5485 INTEGER and RATIO types: while bugs still remain, many more
5486 cases are accurately computed;
5487 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5488 if it is in the last clause;
5489 ** CONSTANTLY now correctly returns a side-effect-free function in
5491 ** DECLARE is no longer treated as a special-operator; in
5492 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5493 * incremented fasl file version number due to the change in the
5494 DEFSTRUCT-SLOT-DESCRIPTION structure.
5496 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5497 * minor incompatible change: code processed by the "interpreter" or
5498 EVAL now has a compilation optimization policy of (DEBUG 2)
5499 (changed from (DEBUG 1)) to improve debuggability of interactive
5500 development, and to allow the use of the debug RETURN command in
5502 * an experimental implementation of the RETURN command for the
5503 debugger has been included. (thanks to Frederik Kuivinen)
5504 * fixed bug 62: constraints were not propagated into a loop.
5505 * fixed bug in embedded calls of SORT (reported and investigated by
5507 * fixed some bugs revealed by Paul Dietz' test suite:
5508 ** printing and reading of arrays with some dimensions having
5509 length 0 (thanks to Gerd Moellmann);
5510 ** BOA constructor with &AUX argument without a default value does
5511 not cause a type error;
5512 ** CONSTANTP now returns true for all self-evaluating objects.
5514 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5515 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5516 accessors that are related by inheritance, as specified in the
5517 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5518 Valtteri Vuorikoski)
5519 * The compiler is now able to inline functions that were defined in
5520 a complex lexical environment (e.g. inside a MACROLET).
5521 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5523 * Support for the upcoming FreeBSD-5.0 release has been included.
5524 (thanks to Dag-Erling Smorgrav)
5525 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5526 effect when it is not in a toplevel context.
5527 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5528 stand a better chance of being correct. (thanks to Gerd
5530 * fixed bug in COERCE, which now signals an error on coercing a
5531 rational to a bounded real type which excludes the expected
5533 * The compiler is now able to derive types more accurately from the
5534 COERCE and COMPILE functions.
5535 * fixed bug 223: functional binding is considered to be constant
5536 only for symbols in the CL package.
5537 * fixed bug 231: SETQ did not check the type of a variable being set
5538 (reported by Robert E. Brown)
5539 * A new optimization for MAKE-INSTANCE has been included, fixing
5540 various bugs (including relating to :ALLOCATION :CLASS slots and
5541 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5543 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5544 ** As required by ANSI, LOOP now disallows anonymous collection
5545 clauses such as COLLECT I in conjunction with aggregate boolean
5546 clauses such as THEREIS (= I 1);
5547 ** LOOP now signals an error when any variable is reused in the
5548 same loop (including the potentially useful construct analogous
5549 to WITH A = 1 WITH A = (1+ A);
5550 ** IT is only a special loop symbol within the first clause of a
5551 conditional loop clause;
5552 ** LOOP with a typed iteration variable over a hashtable now
5553 signals a type error iff it should.
5554 * fixed some other bugs revealed by Paul Dietz' test suite:
5555 ** FILE-STREAM now names the class previously known as FD-STREAM;
5556 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5557 argument) no longer signals an error;
5558 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5559 of the slot symbol, rather than using the current package
5560 ((:CONC-NAME "") continues to intern the slot's name in the
5562 * incremented fasl file version number, because of the incompatible
5563 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5564 of the new implementation of DEFINE-COMPILER-MACRO.
5566 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5567 * Support for building SBCL for MIPS platforms running in
5568 little-endian mode has now been checked in, and basic
5569 functionality on said platforms verified.
5570 * minor incompatible change: PCL now records the pathname of a file
5571 in which methods and the like are defined, rather than its
5573 * minor incompatible change: TRUENAME now considers the truename of
5574 a file naming a directory to be the pathname with :DIRECTORY
5575 component indicating that directory.
5576 * minor incompatible change: a NAMED clause in the extended form of
5577 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5578 reason for the previous behaviour is unclear.
5579 * more systematization and improvement of CLOS and MOP conformance
5580 in PCL (thanks to Gerd Moellman and Pierre Mai):
5581 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5583 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5584 primary methods with no specializers;
5585 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5587 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5588 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5589 FORWARD-REFERENCED-CLASSes; error reporting on
5590 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5592 ** SXHASH on CLOS instances now uses a slot internal to the
5593 instance to return different numbers on distinct instances,
5594 while preserving the same return value through invocations of
5596 ** DEFMETHOD signals errors when methods with longer incongruent
5597 lambda lists are added to generic functions;
5598 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5599 CLASS, as specified in AMOP;
5600 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5601 on the order returned by the primary method for classes of
5602 class STANDARD-CLASS;
5603 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5604 * fixed some bugs shown by Paul Dietz' test suite:
5605 ** DOLIST puts its body in TAGBODY;
5606 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5608 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5609 value producing form;
5610 ** if more variables are given to PROGV than values, extra
5611 variables are bound and made to have no value;
5612 ** NSUBSTITUTE on list arguments gets the right answer with
5614 ** ELT signals an error of type TYPE-ERROR when the index argument
5615 is not a valid sequence index;
5616 ** LOOP signals (at macroexpansion time) an error of type
5617 PROGRAM-ERROR when duplicate variable names are found;
5618 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5619 ** FUNCALL of special-operators now cause an error of type
5621 ** PSETQ now works as required in the presence of side-effecting
5622 symbol-macro places;
5623 ** NCONC accepts any object as its last argument;
5624 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5626 ** loop-for-as-package does not require a package to be explicitely
5628 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5630 * fixed bug 166: compiler preserves "there is a way to go"
5631 invariant when deleting code.
5632 * fixed bug 172: macro lambda lists with required arguments after
5633 &REST arguments now cause an error to be signalled. (thanks to
5635 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5636 bug. (thanks to Matthew Danish)
5637 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5639 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5640 arguments are lexically rebound. (thanks to Gerd Moellmann and
5642 * fixed bug 194: error messages are now more informative when there
5643 is no primary method applicable in a call to a generic
5644 function. (thanks to Gerd Moellmann)
5645 * fixed bug in command line argument checking (thanks to Julian
5647 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5648 (thanks to Matthew Danish)
5649 * incremented fasl file version number, because of the
5650 SXHASH-related changes in the layout of CLOS data structures
5652 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5653 * minor incompatible change: The runtime (the Unix executable named
5654 "sbcl") is now much pickier about the .core files it will load.
5655 Essentially it now requires .core files to descend from the same
5656 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5657 as the runtime does. (The intent is to prevent the crashes which
5658 can occur, and which can even be reported as mysterious failures,
5659 when people patch the sources or change the build parameters
5660 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5661 sbcl and .core files.)
5662 * fixed bug: VALUES-LIST is no longer optimized away.
5663 * fixed bug 142: The FFI conversion of C string values to Lisp
5664 string values no longer conses excessively. (thanks to Nathan
5665 Froyd porting Raymond Toy's fix to CMU CL)
5666 * began to systematize and improve MOP conformance in PCL (thanks to
5667 Nathan Froyd, Gerd Moellman and Pierre Mai):
5668 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5670 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5671 ** FINALIZE-INHERITANCE is now called on class finalization;
5672 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5673 argument precedence order.
5674 * fixed bug 202: The compiler no longer fails on functions whose
5675 derived types contradict their declared type.
5676 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5677 so it can be non-toplevel.
5678 * The fasl file version number has changed (because of the new
5679 implementation of DEFMACRO).
5680 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5681 safe code, that any length requirement by their type-specifier
5682 argument is valid. The exceptions to this are described in bug
5684 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5685 functions now check the types of their inputs as required by ANSI.
5686 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5687 introduced symbol is DECLAREd to be SPECIAL.
5688 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5689 * fixed bug: :COUNT argument to sequence functions may be negative
5690 * fixed bug: body of DO-SYMBOLS may contain declarations
5691 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5692 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5693 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5694 symbol macro only once
5695 * fixed printing of call frame when argument list is unavailable
5696 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5697 * compiler no longer signals WARNING on unknown keyword
5700 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5701 * A beta-quality port to the mips architecture running Linux,
5702 based on the old CMUCL backend, has been made. It has been tested
5703 on a big-endian kernel, and works sufficiently well to be able to
5704 rebuild itself; it has not been tested in little-endian mode.
5705 * fixed an inconsistency between gencgc.c and purify.c which made
5706 dumping/loading .core files unreliable
5707 * fixed bug 120a: The compiler now deals correctly with IFs where
5708 the consequent is the same as the alternative, instead of
5709 misderiving the return type. (thanks to Alexey Dejneka)
5710 * fixed bug 113: Logical pathnames are now dumpable (the logical
5711 host is resolved at load-time, throwing an error if it is not
5713 * fixed bug 174: FORMAT's error message is slightly clearer when a
5714 non-printing character is used in a format directive.
5715 * fixed several bugs in compiler checking of type declarations, i.e.
5716 violations of the Python "declarations are assertions" principle
5717 (thanks to Alexey Dejneka)
5718 * fixed several bugs in PCL's error checking (thanks to Gerd
5720 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5722 * fixed bug in compilation of functions as first class values
5723 (thanks to Antonio Martinez-Shotton)
5724 * The compiler's handling TYPE-ERRORs which it can prove will
5725 inevitably happen at runtime has been cleaned up and corrected
5726 in several ways. (thanks to Alexey Dejneka)
5727 * improved argument type checking for various basic arithmetic
5728 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5729 lavished on them in the past that they can be compiled in many
5730 ways in different special cases
5731 * fixed bug 181: compiler checks validity of user supplied type
5733 * cleaned up code flushing in optimization: Function calls which
5734 should signal errors for safety purposes (e.g. which ANSI says
5735 should signal errors when their arguments are of incorrect type)
5736 are no longer optimized away.
5737 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5738 * incremented fasl file version number, because changes in the
5739 implementation of sequence functions like COERCE caused
5740 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5741 in old inline expansions) to become undefined. (Actually these
5742 changes were later undone, so we might very well be binary
5743 compatible with 0.7.7 after all, but leaving the version number
5744 incremented seemed like the simplest and most conservative
5747 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5748 * An alpha-quality port to the parisc architecture running Linux,
5749 based on the old CMUCL backend, has been made. This, even more so
5750 than the other backends, should be considered still a work in
5751 progress; known problems include that the Linux kernel in 64-bit
5752 mode does not propagate the correct sigcontext structure to
5753 userspace, and consequently SBCL on a parisc64 kernel will not
5755 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5756 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5757 suppressed.) Also now that the compiler is looking at declarations
5758 in the environment, it checks optimization declarations as well,
5759 and suppresses inlining when (> DEBUG SPEED).
5760 * More fixes have been made to treatment of floating point exception
5761 treatment and other Unix signals. In particular, floating point
5762 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5763 * The detection and handling of control stack exhaustion (infinite
5764 or very deeply nested recursion) has changed. Stack exhaustion
5765 detection is now done by write-protecting pages at the OS level
5766 and applies at all optimization settings; when found, a
5767 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5768 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5769 be caught using IGNORE-ERRORS.
5770 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5771 correctly when transforming recursive LABELS functions to LETs.
5772 (thanks to Alexey Dejneka)
5773 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5774 that are names of constants or global variables.
5775 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5776 alien routines with docstrings.
5777 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5778 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5780 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5781 (thanks to Eric Marsden)
5782 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5783 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5784 * Bug fix: The SPARC backend can now compile functions involving
5785 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5786 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5787 to a functions expecting a PATHNAME-DESIGNATOR.
5788 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5789 lambda lists. (thanks to Alexey Dejneka)
5790 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5791 functions so that EXPORTing the name of the class doesn't cause
5792 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5793 to Antonio Martinez for reporting this)
5794 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5795 constant-folded without failing an assertion. (thanks to Einar
5796 Floystad Dorum for reporting this)
5797 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5798 types are now dealt with more correctly by the compiler.
5799 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5800 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5801 behaviour analogous to RENAME-FILE. This puts its behaviour more
5802 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5804 * The fasl file version number has changed again. (because of the
5805 bug fix involving the names of PCL MAKE-INSTANCE functions)
5807 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5808 * bug fix: Floating point exceptions are treated much more
5809 consistently on the x86/Linux and PPC/Linux platforms.
5810 * Array initialization with :INITIAL-ELEMENT is now much faster for
5811 cases when the compiler cannot open code the array creation, but
5812 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5813 array accesses have also seen a speed increase.
5814 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5815 specified. (This was at the root of some bad interactions between
5816 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5818 * bug fix: Internal error arguments for undefined functions are now
5819 computed correctly on the PPC/Linux platform.
5820 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5821 Raymond Toy's patch for CMU CL)
5822 * Support for the Solaris 9 operating environment has been included
5823 (thanks to Daniel Merritt)
5824 * A very ugly but hopefully complete draft of the missing FFI chapter
5825 of the manual has been created by reformatting the corresponding
5826 CMU CL manual chapter into (currently very ugly and incoherent)
5827 DocBook and bringing it up to date for SBCL behavior. Thus, the
5828 manual is now essentially complete, at least by my extreme
5829 once-and-only-once standards, whereby it's acceptable to refer to
5830 the doc strings of SB-EXT functions as the primary documentation.
5831 * The fasl file version number has changed again, due to cleanup of
5832 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5833 is no longer a static symbol.)
5835 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5836 * SBCL now builds with OpenMCL (version 0.12) as the
5837 cross-compilation host; also, more progress has been made toward
5838 bootstrapping under CLISP.
5839 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5841 * bug 158 fixed: The compiler can now deal with integer loop
5842 increments different from 1; fixing this turned out also to fix
5844 * bug 169 fixed: no more bogus warnings about using lexical bindings
5845 despite the presence of perfectly good SPECIAL declarations (thanks
5846 to David Lichteblau)
5847 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5848 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5849 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5851 * bug 180 fixed: Method combination specifications no longer ignore
5852 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5853 * bug fix: Structure type predicate functions now check their argument
5854 count as they should.
5855 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5856 correctly. (thanks to Pierre Mai)
5857 * minor incompatible change: The --noprogrammer option is deprecated
5858 in favor of the new --disable-debugger option, which is very similar.
5859 (The major difference is that it takes effect at a slightly different
5860 time at startup, causing handling of errors in --sysinit and
5861 --userinit files will be affected differently.) The
5862 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5863 been added to allow this functionality to be controlled from ordinary
5864 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5865 maintainers, who might want to run non-interactive scripts to
5866 build SBCL cores which will later be used interactively.)
5867 * minor incompatible change: The LOAD function no longer, when given
5868 a wild pathname to load, loads all files matching that pathname.
5869 Instead, an error of type FILE-ERROR is signalled.
5871 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5872 * bug 147 fixed: The compiler preserves its block link/count
5873 invariants more correctly now so that it doesn't crash. (thanks
5875 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5877 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5878 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5879 no-value-for-this-character as NIL (as specified by ANSI).
5880 * HOST-NAMESTRING on physical pathnames now returns a string that is
5881 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5882 (thanks to Christophe Rhodes)
5883 * The Alpha port handles icache flushing more correctly. (thanks to
5885 * More progress has been made toward bootstrapping under CLISP. (thanks
5886 to Christophe Rhodes)
5887 * The fasl file format has changed again, because dynamic loading
5888 on OpenBSD (which has non-ELF object files) motivated some cleanups
5889 in the way that foreign symbols are transformed and passed around.
5890 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5891 is no longer treated as whitespace by the reader, but instead as
5892 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5893 |A
\7fB|, instead of A as it used to.
5895 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5896 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5897 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5898 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5899 this as of 0.7.1.45, but was left out of the previous news section
5900 (thanks to Dan Barlow)
5901 * SBCL now runs on the Solaris operating system on SPARC architectures
5902 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5903 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5904 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5905 * SPARC backend cleanups, allowing builds of cores optimized for V8
5906 and V9 SPARCS, and also emission of code targeted to a particular
5907 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5909 * SBCL is closer to bootstrapping under CLISP, thanks to various
5910 fixes by Christophe Rhodes.
5911 * The fasl file format has changed again, to allow the compiler's
5912 INFO database to support symbol macros.
5913 * The user manual (in doc/) is formatted into HTML more nicely.
5914 (thanks to coreythomas)
5915 * The system is smarter about SUBTYPEP relationships, especially
5916 those involving NOT types (including types such as ATOM which are
5917 represented internally using NOT types). Thus SUBTYPEP is less
5918 likely to return (VALUES NIL NIL) in general, and in particular
5919 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5921 * The fasl file format has changed again, because the internal
5922 representation of types now includes a new slot to support the new
5923 SUBTYPEP-of-NOT-types logic.
5924 * (not a change in the main branch of SBCL, but a related prototype
5925 which can hopefully be merged into the main branch of SBCL in the
5926 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5927 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5928 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5929 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5930 dispatch macro character combinations. (thanks to Alexey Dejneka)
5931 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5932 that superficially look like logical namestrings correctly.
5933 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5935 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5936 default supplied-p) for &optional and &key arguments. (thanks to
5939 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5940 * incompatible change: The compiler is now less aggressive about
5941 tail call optimization, doing it only when (> SPACE DEBUG) or
5942 (> SPEED DEBUG). (This is an incompatible change because there are
5943 programs which relied on the old CMU-CL-style behavior to optimize
5944 away their unbounded recursion which will now die of stack overflow.)
5945 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5946 for non-GENCGC systems has been increased to 20M (since that
5947 seems much closer to the likely performance optimum for modern
5948 systems than the old 4M value was)
5949 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5950 and *DEBUG-PRINT-LEVEL*
5951 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5952 of CMU CL's support for SPARC, and various endianness and other
5953 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5954 * new syntactic sugar for the Unix command line: --load foo.bar is now
5955 an alternate notation for --eval '(load "foo.bar")'.
5957 ** The system now detects stack overflow and handles it gracefully,
5958 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5959 optimization settings. (This is a good thing in general, and
5960 its introduction in this version should be particularly timely
5961 for anyone whose code fails because of suppression of tail
5963 ** The system now hunts for the C variable "environ" in a more
5964 devious way, to avoid segfaults when the C library version differs
5965 between compile time and run time. (thanks to Christophe Rhodes)
5966 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5967 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5968 ** The compiler no longer issues bogus style warnings for undefined
5969 classes in the same source file as the DEFCLASSes which defined
5970 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5972 ** fixes in CONDITION class precedence list for undefined function
5973 errors (thanks to Alexei Dejneka)
5974 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5975 correctly. (thanks to Dan Barlow)
5976 ** portability fixes aiming at bootstrapping under CLISP (thanks
5977 to Dave McDonald and Christophe Rhodes)
5978 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5979 ** fixes in type translation and and type inference (thanks to
5981 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5982 ** various fixes in the new ports (thanks to Dan Barlow)
5983 * several changes related to debugging:
5984 ** suppression of tail recursion, as noted above
5985 ** stack overflow detection, as noted above
5986 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5987 is now the default. (For some time encapsulation has been more
5988 reliable than the breakpoint-based :ENCAPSULATE NIL
5989 implementation, at least on X86 systems; and I just noticed that
5990 encapsulation also seems closer to the spirit of the ANSI
5993 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5995 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5996 up properly again. (There was a packaging bug in 0.7.0 which
5997 left their definitions in SB-SYS::LOAD-FOREIGN and
5998 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5999 vital for most things which interface to C-level interfaces,
6000 like extensions working with sockets or databases or
6001 Perl-compatible regexes or whatever, and the need to fix
6002 this bug is the main reason that 0.7.1 was released so
6004 ** DEFGENERIC is now choosier about the methods it redefines, so that
6005 reLOADing a previously-LOADed file containing DEFGENERICs does
6006 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6007 cycle now works as it should. (thanks to Alexey Dejneka)
6008 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6009 fixed by Christophe Rhodes. (He actually submitted this patch
6010 months ago, and I delayed until after 0.7.0.)
6011 ** Bug 111 (internal compiler confusion about runtime checks on
6012 FUNCTION types) was fixed by Alexey Dejneka.
6013 * Some internal cleanups (getting rid of variables which aren't
6014 needed now that the byte interpreter is gone) caused the fasl
6015 file format number to change again.
6017 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6018 * major incompatible change: The default fasl file extension, i.e. the
6019 default extension for files produced by COMPILE-FILE, has changed
6020 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6022 ** There are many changes in the implementation of the compiler.
6023 SBCL is now essentially a compiler-only implementation of ANSI
6024 Common Lisp. EVAL still "interprets" a few special cases, but
6025 almost all the interesting cases are handled by creating
6026 a LAMBDA expression, calling COMPILE on it, then calling
6027 FUNCALL on the result.
6028 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6029 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6030 Since the code is newer, there might still be some new bugs
6031 (though not as many as before Martin Atzmueller's fixes:-). But
6032 the new code is substantially simpler and clearer, and hopefully
6033 any remaining bugs will be simpler, less fundamental, and more
6034 fixable then the bugs in the old code.
6035 ** The revised compiler is still a little unsteady on its feet.
6037 *** The debugging information it produces (particularly the names
6038 of FUNCTION objects) is sometimes much less useful than what
6039 the old compiler produced.
6040 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6041 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6042 within a MACROLET) has been temporarily weakened.
6043 ** There are new compiler optimizations for various functions:
6044 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6045 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6046 *** the math functions TRUNCATE, FLOOR, and CEILING
6047 *** the function-of-all-trades COERCE
6048 Mostly these should be transparent, but there's one
6049 potentially-annoying problem (bug 117): when the compiler
6050 inline-expands a function and does type analysis on the result,
6051 it can create control paths which have type mismatches, and
6052 when it can't prove that those control paths aren't taken,
6053 it will issue WARNINGs about the type mismatches. This is
6054 a particular problem in practice for the new sequence functions.
6055 It's not clear how this should be fixed, and for now, a
6056 workaround is given in the entry for 117 in the BUGS file.
6057 ** (Because of the interaction between the two previous items --
6058 occasional inlining problems and new inline expansions -- some
6059 of the new sequence function optimizations won't really kick in
6060 completely until debugging information, and then inlining, are
6061 straightened out in some future version.)
6062 * minor incompatible changes:
6063 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6064 DIRECTORY no longer implicitly promotes NIL slots of its
6065 pathname argument to :WILD. In particular, when you ask for the
6066 contents of a directory (which you used to be able to do without
6067 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6068 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6069 ** changes in behavior that ANSI explicitly defines to be
6070 implementation dependent:
6071 *** The new compiler-only implementation still conforms with ANSI,
6072 but acts a little different than before. Besides the obvious
6073 changes in performance tradeoffs (that the cost per form passed
6074 to EVAL has gone up, and the cost per form executed by EVAL
6075 has gone down), the behavior of the system changes a little
6076 because there are no longer any interpreted function objects.
6077 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6078 e.g. doing COMPILE on the output of interactive DEFUN is
6080 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6082 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6083 has changed from (:CL) to NIL.
6084 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6085 e.g. #\Newline and #\Tab, don't have names specified in the
6086 ANSI Common Lisp standard, is now based on their ASCII symbolic
6087 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6088 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6089 are no longer used for output.
6090 ** changes in internal implementation constants:
6091 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6092 4 million. (If your application spends a lot of time GCing and
6093 you have a lot of RAM, you might want to experiment with
6094 increasing it even more.)
6095 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6096 However, almost all old code should still continue to work without
6097 immediate update, as SB-C-CALL is now a (deprecated) nickname
6099 ** Old operator names in the style DEF-FOO are now deprecated in
6100 favor of new corresponding names DEFINE-FOO, for consistency with
6101 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6102 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6103 internal symbols, but a few supported extensions like
6104 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6105 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6106 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6107 etc. as you get deeper into recursive calls to the debugger
6108 command loop, instead of the old "5]", "5]]", "5]]]"
6109 sequence. (I was motivated to do this when squabbles between
6110 ILISP and SBCL left me very deeply nested in the debugger. In the
6111 short term, this change will probably provoke more ILISP/SBCL
6112 squabbles, but hopefully it will be an improvement in the long run.)
6113 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6114 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6115 function, since declaiming return types involving aliens is
6116 (1) annoyingly messy to do by hand and (2) vital to efficient
6117 compilation of code which calls such functions.
6118 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6119 longer reexported by the SB-EXT package. They're solely useful
6120 for alien code, so it seems more logical that you should get
6121 them from the SB-ALIEN package, not in SB-EXT.
6122 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6123 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6124 features. Instead, the code that they used to control is always
6125 built into the system.
6126 * many other bug fixes
6127 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6128 advantage of the new EVAL-WHEN stuff and to clean them up in
6129 general, and they are now more ANSI-compliant in a number of
6130 ways. Martin Atzmueller is responsible for a lot of this.
6131 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6133 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6134 *** correct ERROR type for various file operations
6135 *** some fixes for Lisp streams
6136 *** DEFMETHOD syntax checking
6137 *** changing old weird representation of debug information as
6138 strings (which, among their other deficiencies, don't transform
6139 correctly when you rename packages, and don't change their
6140 print representation when you change things like *PACKAGE*
6141 and *PRINT-LENGTH*) to symbols and lists of symbols
6142 He also made several improvements and fixed several bugs in DESCRIBE.
6143 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6145 *** misbehavior of WRITE-STRING/WRITE-LINE
6146 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6147 and several other LOOP problems as well
6148 *** DIRECTORY when similar filenames are present
6149 *** DEFGENERIC with :METHOD options
6150 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6151 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6152 *** argument ordering in FIND with :TEST option
6153 *** mishandled package designator argument in APROPOS-LIST
6154 *** various problems in the backquote readmacro
6155 *** a bug in APROPOS
6156 *** probably some others that I'm not describing very well here,
6157 since the CVS log documents them by reference to sbcl-devel
6158 messages, and the SourceForge archives aren't working well.:-(
6159 ** Dan Barlow improved the Alpha port (and is making progress on the
6160 PPC port, for those of you who think different).
6161 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6162 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6163 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6164 continues to work on the SPARC port (for those of you in a position
6165 to look down upon our little PC-compatible boxes from a great height).
6166 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6167 and uses that copy, rather than the current dynamic value, when
6168 it's trying to decide whether to truncate output. Thus e.g.
6169 (let ((*print-lines* 50))
6170 (pprint-logical-block (stream nil)
6172 (let ((*print-lines* 8))
6173 (print (aref possiblybigthings i) stream)))))
6174 should now truncate the logical block only at 50 lines, instead of
6175 often truncating it at 8 lines, as it did before.
6176 * The doc/cmucl/ directory, containing old CMU CL documentation
6177 from the time of the fork, is no longer part of the base system.
6178 SourceForge has shut down its anonymous FTP service, and with it
6179 my original plan for distributing the old CMU CL documentation
6180 there. For now, if you need these files you can download an old
6181 SBCL source release and extract them from it.
6182 * The fasl file version number changed again, for dozens of reasons,
6183 some of which are apparent above.
6185 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6186 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6187 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6188 patch, so that DISASSEMBLE output is much nicer.
6189 * The code in the SB-PROFILE package now seems reasonably stable.
6190 I still haven't decided what the final interface should look like
6191 (I'd like PROFILE to interact cleanly with TRACE, since both
6192 facilities use function encapsulation) but if you have a need
6193 for profiling now, you can probably use it successfully with
6194 the current CMU-CL-style interface.
6195 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6196 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6197 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6198 link now returns the dangling link itself, and for similar
6199 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6200 link itself. (In these cases the old code signalled an error and
6201 looped endlessly, respectively.) Thus, DIRECTORY now works even
6202 in the presence of dangling and cyclic symbolic links.
6203 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6204 is now a supported extension again, since the consensus on
6205 sbcl-devel was that it can be useful for ordinary development
6206 work, not just for debugging SBCL itself.
6207 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6208 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6209 that currently-defined functions might be redefined later with
6210 different return types.
6211 * Hash tables can be printed readably, as inspired by CMU CL code
6212 of Eric Marsden and SBCL code of Martin Atzmueller.
6213 * better error handling in CLOS method combination, thanks to
6214 Martin Atzmueller porting Pierre Mai's CMU CL patches
6215 * more overflow fixes for >16Mbyte I/O buffers
6216 * A bug in READ has been fixed, so that now a single Ctrl-D
6217 character suffices to cause end-of-file on character streams.
6218 In particular, now you only need one Ctrl-D at the command
6219 line (not two) to exit SBCL.
6220 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6222 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6223 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6224 does the right thing.
6225 * The implementation of some type tests, especially for CONDITION
6226 types, is now tidier and maybe faster, due to CMU CL code
6227 originally by Douglas Crosher, ported by Martin Atzmueller.
6228 * Some math functions have been fixed, and there are new
6229 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6230 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6231 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6232 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6233 likely to be built into sbcl-0.7.0.)
6234 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6235 CL, ported to SBCL by Martin Atzmueller)
6236 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6237 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6238 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6239 * There's a new slam.sh hack to shorten the edit/compile/debug
6240 cycle for low-level changes to SBCL itself, and a new
6241 :SB-AFTER-XC-CORE target feature to control the generation of
6242 the after-xc.core file needed by slam.sh.
6243 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6244 COMPILE-FILE is no longer supported, so that now every function
6245 gets an entry point, so that block compilation looks a little
6246 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6247 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6248 returns the number of bytes consed since the system started,
6249 rather than the number consed since the first time the function
6250 was called. (The new definition parallels ANSI functions like
6251 CL:GET-INTERNAL-RUN-TIME.)
6252 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6253 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6254 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6255 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6256 * Fasl file version numbers are now independent of the target CPU,
6257 since historically most system changes which required version
6258 number changes have affected all CPUs equally. Similarly,
6259 the byte fasl file version is now equal to the ordinary
6262 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6263 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6264 is no longer recognized. I apologize for this, because it was
6265 listed in SB-EXT as a supported extension, but I found that
6266 its existing behavior was poorly specified, as well as incorrectly
6267 specified, and it looked like too much of a mess to straighten it
6268 out. I have enough on my hands trying to get ANSI stuff to work..
6269 * many patches ported from CMU CL by Martin Atzmueller, with
6270 half a dozen bug fixes in pretty-printing and the debugger, and
6271 half a dozen others elsewhere
6272 * fixed bug 13: Floating point infinities are now supported again.
6273 They might still be a little bit flaky, but thanks to bug reports
6274 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6275 as flaky as they were.
6276 * The --noprogrammer command line option is now supported. (Its
6277 behavior is slightly different in detail from what the old man
6278 page claimed it would do, but it's still appropriate under the
6279 same circumstances that the man page talks about.)
6280 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6281 are now supported, and enabled by default. Thus, the compiler can
6282 handle many floating point and complex operations much less
6283 inefficiently. (Thus e.g. you can implement a complex FFT
6285 * The compiler now detects type mismatches between DECLAIM FTYPE
6286 and DEFUN better, and implements CHECK-TYPE more correctly, and
6287 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6288 thanks to patches from Martin Atzmueller.
6289 * various fixes to make the cross-compiler more portable to
6290 ANSI-conforming-but-different cross-compilation hosts (notably
6291 Lispworks for Windows, following bug reports from Arthur Lemmens)
6292 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6293 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6294 fixed thanks to Pierre Mai's CMU CL patches.
6295 * fixes to keep the system from overflowing internal counters when
6296 it tries to use i/o buffers larger than 16M bytes
6297 * fixed bug 45a: Various internal functions required to support
6298 complex special functions have been merged from CMU CL sources.
6299 (When I was first setting up SBCL, I misunderstood a compile-time
6300 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6301 * improved support for type intersection and union, fixing bug 12
6302 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6303 more obscure bugs as well
6304 * some steps toward byte-compiling non-performance-critical
6305 parts of the system, courtesy of patches from Martin Atzmueller
6306 * Christophe Rhodes has made some debian packages of sbcl at
6307 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6308 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6309 stable, but are nonetheless usable. When he's ready, I'd be happy
6310 to add them to the SourceForge "File Releases" section. (And if
6311 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6312 * new fasl file format version number (because of changes in
6313 internal representation of (OR ..) types to accommodate the new
6314 support for (AND ..) types, among other things)
6316 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6317 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6319 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6321 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6322 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6323 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6324 * DESCRIBE now works on structure objects again.
6325 * Most function call argument type mismatches are now handled as
6326 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6327 know whether the function will be redefined before the call is
6328 executed. (The compiler could flag local calls with full WARNINGs,
6329 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6330 it doesn't keep track of enough information to know whether calls
6331 are local in this sense.)
6332 * Compiler output is now more verbose, with messages truncated
6333 later than before. (There should be some supported way for users
6334 to override the default verbosity, but I haven't decided how to
6335 provide it yet, so this behavior is still controlled by the internal
6336 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6337 src/compiler/ir1util.lisp.)
6338 * Fasl file format version numbers have increased again, because
6339 support for the Gray streams extension changes the layout of the
6340 system's STREAM objects.
6341 * The Gray subclassable streams extension now works, thanks to a
6342 patch from Martin Atzmueller.
6343 * The full LOAD-FOREIGN extension (not just the primitive
6344 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6345 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6346 but like most other programs, it defaults to copying the Unix
6347 environment from the original process instead of starting the
6348 new process in an empty environment.
6349 * Extensions which manipulate the Unix environment now support
6350 an :ENVIRONMENT keyword option which doesn't smash case or
6351 do other bad things. The CMU-CL-style :ENV option is retained
6352 for porting convenience.
6353 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6354 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6356 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6358 * A patch from Martin Atzmueller seems to have solved the SIGINT
6359 problem, and as far as we know, signal-handling now works cleanly.
6360 (If you find any new bugs, please report them!)
6361 * The system no longer defaults Lisp source file names to types
6362 ".l", ".cl", or ".lsp", but only to ".lisp".
6363 * The compiler no longer uses special default file extensions for
6364 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6365 seems to expect a single default extension for all compiled code,
6366 and there's no compelling reason to try to stretch the standard
6367 to allow two different extensions.) Instead, byte-compiled files
6368 default to the same extension as native-compiled files.
6369 * Fasl file format version numbers have increased again, because
6370 a rearrangement of internal implementation packages made some
6371 dumped symbols in old fasl files unreadable in new cores.
6372 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6373 many fewer weird special cases.
6374 * Bug #17 (differing COMPILE-FILE behavior between logical and
6375 physical pathnames) has been fixed, and some related misbehavior too,
6376 thanks to a patch from Martin Atzmueller.
6377 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6378 by Tim Moore, ported to SBCL by Martin Atzmueller.
6379 * Martin Atzmueller fixed several filesystem-related problems,
6380 including bug #36, in part by porting CMU CL patches, which were
6381 written in part by Paul Werkowski.
6382 * More compiler warnings in src/runtime/ are gone, thanks to
6383 more patches from Martin Atzmueller.
6384 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6387 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6389 * DESCRIBE now works on CONDITION objects.
6390 * The debugger now handles errors which arise when trying to print
6391 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6393 * The build system now uses an additional file, customize-target-features.lisp,
6394 to allow local modifications to the target *FEATURES* list. (The point of
6395 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6396 debugging features enabled, without having to worry about propagating it
6397 into everyone's system when I do a "cvs update".) When no
6398 customize-target-features.lisp file exists, the target *FEATURES* list
6399 should be constructed the same way as before.
6400 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6401 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6402 warn about behavior which is undefined under the ANSI spec. Note: This
6403 is specified by ANSI, but it's not very popular with programmers.
6404 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6405 macro in the SBCL sources for an example of a workaround which you
6406 might use to make portable ANSI-standard code which does what you want.
6407 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6408 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6409 when it's used as a non-toplevel form. (This is required in order
6410 to implement the DEFCONSTANT-EQX macro.)
6411 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6412 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6413 funny things, due to bugs in the implementation of EVAL-WHEN
6414 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6415 non-toplevel DEFCONSTANTs are uncommon.)
6416 * The core file version number and fasl file version number have been
6417 incremented, because the old noncompliant DEFCONSTANT behavior involved
6418 calling functions which no longer exist, and because I also took the
6419 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6420 * fixed bug 1 (error handling before read-eval-print loop starts), and
6421 redid debugger restarts and related debugger commands somewhat while
6423 ** The QUIT debugger command is gone, since it did something
6424 rather different than the SB-EXT:QUIT command, and since it never
6425 worked properly outside the main toplevel read/eval/print loop.
6426 Invoking the new TOPLEVEL restart provides the same functionality.
6427 ** The GO debugger command is also gone, since you can just invoke
6428 the CONTINUE restart directly instead.
6429 ** The TOP debugger command is also gone, since it's redundant with the
6430 FRAME 0 command, and since it interfered with abbreviations for the
6432 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6434 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6435 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6436 some porting work by Martin Atzmueller)
6437 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6438 with a boatload of patches which he ported to SBCL. Now that those
6440 ** The system tries to make sure that its low-priority messages
6441 are prefixed by semicolons, to help people who like to use
6442 syntax highlighting in their ILISP buffer. (This patch
6443 was originally due to Raymond Toy.)
6444 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6445 patches originally written by Raymond Toy.
6446 ** The compiler understands coercion between single-value and
6447 multiple-VALUES type expressions better, getting rid of some very
6448 weird behavior, thanks to patches originally by Robert MacLachlan
6449 and Douglas Crosher.
6450 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6451 lambda lists, thanks to a patch originally by Pierre Mai.
6452 ** The system no longer bogusly warns about "abbreviated type
6454 ** The compiler gets less confused by inlining and RETURN-FROM,
6455 thanks to some patches originally by Tim Moore.
6456 ** The system no longer hangs when dumping circular lists to fasl
6457 files, thanks to a patch originally from Douglas Crosher.
6458 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6459 undefined function error.
6460 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6461 in structure slot initforms) for now, documented workaround instead:-|
6462 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6463 * fixed bug 5: added stubs for various Gray stream functions called
6464 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6465 installed, at least appropriate type errors are generated
6466 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6467 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6468 consistently in DEFMETHOD forms.
6469 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6470 it doesn't seem to affect SBCL after all
6471 * The C runtime system now builds with better optimization and many
6472 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6474 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6476 * The system is now under CVS at SourceForge (instead of the
6477 CVS repository on my home machine).
6478 * The new signal handling code has been tweaked to treat register
6479 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6480 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6481 downstream, e.g. in debug-int.lisp, has implicit dependencies
6482 on the unsignedness of integer representation of machine words,
6483 and that caused the system to bomb out with infinite regress
6484 when trying to recover from type errors involving signed values,
6485 e.g. (BUTLAST '(1 2 3) -1).)
6486 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6487 (This was one of the bugs Peter Van Eynde reported back in July.)
6488 * The system now uses code inspired by Colin Walters' O(N)
6489 implementation of MAP (from the cmucl-imp@cons.org mailing
6490 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6491 inline the MAP operation, and there is more than one
6492 sequence argument to the MAP call (so that it can't just
6493 do ETYPECASE once and for all based on the type of the
6494 single sequence argument). (The old non-inline implementation
6495 of the general M-argument sequence-of-length-N case required
6496 O(M*N*N) time when any of the sequence arguments were LISTs.)
6497 * The QUIT :UNIX-CODE keyword argument has been renamed to
6498 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6499 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6501 * Raymond Wiker's patches to port dynamic loading from Linux to
6502 FreeBSD have been added.
6503 * The BUGS file is now more nearly up to date, thanks in large part
6504 to Martin Atzmueller's review of it.
6505 * The debugger now flushes standard output streams before it begins
6506 its output ("debugger invoked" and so forth).
6507 * The core version number and fasl file version number have both
6508 been incremented, because of incompatible changes in the layout
6510 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6511 used to not be called for a saved Lisp image.)
6512 * Martin Atzmueller's version of a patch to fix a compiler crash,
6513 as posted on sbcl-devel 13 September 2000, has been installed.
6514 * Instead of installing Martin Atzmueller's patch for the
6515 compiler transform for SUBSEQ, I deleted the compiler transform,
6516 and transforms for some similar consing operations.
6517 * A bug in signal handling which kept TRACE from working on OpenBSD
6519 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6520 away by constant folding
6521 * The system now defines its address space constants in one place
6522 (in the Lisp sources), and propagates them automatically elsewhere
6523 (through GENESIS and the sbcl.h file). Therefore, patching the
6524 address map is less unnecessarily tedious and error-prone. The
6525 Lisp names of address space constants have also been systematized.
6526 * CVS tags like dollar-Header-dollar have been removed from
6527 the sources, because they have never saved me trouble and
6528 they've been source of trouble working with patches and other
6529 diff-related operations.
6530 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6531 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6533 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6535 * The system has been ported to OpenBSD.
6536 * The system now compiles with a simple "sh make.sh" on the systems
6537 that it's supported on. I.e., now you no longer need to tweak
6538 text in the target-features.lisp-expr and symlinks in src/runtime/
6539 by hand, the make.sh takes care of it for you.
6540 * The system is no longer so grossly inefficient when compiling code
6541 involving vectors implemented as general (not simple) vectors (VECTOR T),
6542 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6543 which dares to use the various sequence functions on non-simple
6544 vectors, takes less of a performance hit.
6545 * There is now a primitive type predicate VECTOR-T-P
6546 to test for the (VECTOR T) type, so that e.g.
6547 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6548 can now be compiled with some semblance of efficiency. (The old code
6549 turned the type declaration into a full call to %TYPEP at runtime!)
6550 * AREF on (VECTOR T) is still not fast, since it's still compiled
6551 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6552 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6553 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6554 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6555 without making full calls to SUBTYPEP at runtime.
6556 (Some analogous efficiency issues for non-simple vectors specialized to
6557 element types other than T, or for non-simple multidimensional arrays,
6558 have not been addressed. They could almost certainly be handled the
6559 same way if anyone is motivated to do so.)
6560 * The changes in array handling break binary compatibility, so
6561 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6562 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6563 instead of (VALUES T T).
6564 * By following the instructions that Dan Barlow posted to sbcl-devel
6565 on 2 July 2000, I was able to enable primitive dynamic object
6566 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6567 functionality is not implemented (since it calls ld to resolve
6568 library references automatically, requiring RUN-PROGRAM for its
6569 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6570 try to resolve library references) is now supported.
6571 * The system now flushes the standard output streams when it terminates,
6572 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6573 them at several other probably-convenient times, e.g. in each pass of
6574 the toplevel read-eval-print loop, and after evaluating a form given
6575 as an "--eval" command-line option. (These changes were motivated by a
6576 discussion of stream flushing issues on cmucl-imp in August 2000.)
6577 * The source transform for TYPEP of array types no longer assumes
6578 that an array whose element type is a not-yet-defined type
6579 is implemented as an array of T, but instead punts, so that the
6580 type will be interpreted at runtime.
6581 * There is now some support for cross-compiling in make.sh: each of
6582 the phases of make.sh has its own script. (This should be transparent
6583 to people doing ordinary, non-cross-compile builds.)
6584 * Since my laptop doesn't have hundreds of megabytes of memory like
6585 my desktop machine, I became more motivated to do some items on
6586 my to-do list in order to reduce the size of the system a little:
6587 ** Arrange for various needed-only-at-cold-init things to be
6588 uninterned after cold init. To support this, those things have
6589 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6590 symbols with such names are now uninterned after cold init).
6591 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6592 fasl files for cold load.
6593 ** Remove the old compiler structure pooling code (which used to
6594 be conditional on the target feature :SB-ALLOC) completely.
6595 ** Redo the representation of some data in cold init to be more compact.
6596 (I also looked into supporting byte compiled code at bootstrap time,
6597 which would probably reduce the size of the system a lot, but that
6598 looked too complicated, so I punted for now.)
6599 * The maximum signal nesting depth in the src/runtime/ support code has
6600 been reduced from 4096 to 256. (I don't know any reason for the very
6601 large old value. If the new smaller value turns out to break something,
6602 I'll probably just bump it back up.)
6603 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6605 * Many, many bugs reported by Peter Van Eynde have been added to
6606 the BUGS list; some have even been fixed.
6607 * While enabling dynamic object file loading, I tried to make the
6608 code easier to understand, renaming various functions and variables
6609 with less ambiguous names, and changing some function calling
6610 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6611 * While trying to figure out how to do the OpenBSD port, I tried to
6612 clean up some of the code in src/runtime/. In particular, I dropped
6613 support for non-POSIX signal handling, added various comments,
6614 tweaked the code to reduce the number of compilation warnings, and
6615 renamed some files to increase consistency.
6616 * To support the new automatic configuration functionality in make.sh,
6617 the source file target-features.lisp-expr has been replaced with the
6618 source file base-target-features.lisp-expr and the machine-generated
6619 file local-target-features.lisp-expr.
6620 * fixed a stupid quoting error in make.sh so that using CMU CL
6621 "lisp -batch" as cross-compilation host works again
6623 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6625 * DESCRIBE no longer tries to call itself recursively to describe
6626 bound/fbound values, so that it no longer fails on symbols which are
6627 bound to themselves (like keywords, T, and NIL).
6628 * DESCRIBE now works on generic functions.
6629 * The printer now prints less-screwed-up representations of closures
6630 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6631 * A private symbol is used instead of the :EMPTY keyword previously
6632 used to mark empty slots in hash tables. Thus
6633 (DEFVAR *HT* (MAKE-HASH-TABLE))
6634 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6635 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6636 now does what ANSI says that it should. (You can still get
6637 similar noncompliant behavior if bang on the hash table
6638 implementation with all the symbols you get back from
6639 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6640 This breaks binary compatibility, since tests for equality to
6641 :EMPTY are wired into things like the macroexpansion of
6642 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6644 * There's now a minimal placeholder implementation for CL:STEP,
6645 as required by ANSI.
6646 * An obscure bug in the interaction of the normal compiler, the byte
6647 compiler, inlining, and structure predicates has been patched
6648 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6649 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6651 * Missing ordinary arguments in a macro call are now detected even
6652 when the macro lambda list contains &KEY or &REST.
6653 * The debugger no longer complains about encountering the top of the
6654 stack when you type "FRAME 0" to explicitly instruct it to go to
6655 the top of the stack. And it now prints the frame you request even
6656 if it's the current frame (instead of saying "You are here.").
6657 * As specified by ANSI, the system now always prints keywords
6658 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6660 * The default initial SIZE of HASH-TABLEs is now smaller.
6661 * Type information from CLOS class dispatch is now propagated
6662 into DEFMETHOD bodies, so that e.g.
6663 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6665 is now basically equivalent to
6666 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6667 (DECLARE (TYPE SINGLE-FLOAT X))
6669 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6670 operation, without having to do run-time type dispatch.
6671 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6672 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6673 * Since I don't seem to be making big file reorganizations very often
6674 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6675 is overflowing my ability to conveniently back them up), I've finally
6676 checked the system into CVS. (The CVS repository is on my home system,
6677 not at SourceForge -- putting it on SourceForge might come later.)
6678 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6679 high-level GC-NOTIFY-FOO functions send their output. (There's
6680 still very little control of where low-level verbose GC functions
6681 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6682 less than it used to -- the GC-NOTIFY-FOO functions are now under
6683 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6684 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6685 in only one place in the source code, and propagates it automatically
6686 everywhere that it's needed. Thus e.g. when I bump the version from
6687 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6688 * The C source files now include boilerplate legalese and documentation
6689 at the head of each file (just as the Lisp source files already did).
6690 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6691 to his page will be replaced with a link to his new CLiki service.
6693 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6695 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6696 * The build process now looks for GNU make under the default name "gmake",
6697 instead of "make" as it used to. If GNU make is not available as "gmake"
6698 on your system, you can change this default behavior by setting the
6699 GNUMAKE environment variable.
6700 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6701 can build without error under CMU CL.
6703 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6705 * There is now a partial SBCL user manual (with some new text and some
6706 text cribbed from the CMU CL manual).
6707 * The beginnings of a profiler have been added (starting with the
6708 CMU CL profiler and simplifying and cleaning up). Eventually the
6709 main interface should be through the TRACE macro, but for now,
6710 it's still accessed through vaguely CMU-CL-style functions and macros
6711 exported from the package SB-PROFILE.
6712 * Some problems left over from porting CMU CL to the new
6713 cross-compilation bootstrap process have been cleaned up:
6714 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6715 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6716 part when getting rid of the compiler *BACKEND* stuff.)
6717 ** The value of *NULL-TYPE* was screwed up, because it was
6718 being initialized before the type system knew the final
6719 definition of the 'NULL type. This screwed up several key
6720 optimizations in the compiler, causing inefficiency in all sorts
6721 of places. (I found it because I wanted to understand why
6722 GET-INTERNAL-RUN-TIME was consing.)
6723 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6724 PROCLAIM FTYPE information. Unfortunately this broke binary
6725 compatibility again, since now the forms output by DEFGENERIC
6726 to refer to functions which didn't exist in 0.6.3.
6727 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6728 can use the new (as of 0.6.3) transform for SOME into MAP into
6730 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6731 values to (INTEGER 0 1000000), so that the time code will no longer
6732 occasionally get blown up by Linux returning 1000000 microseconds
6733 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6734 its output conform to the ANSI spec. (Alas, this makes its output
6735 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6736 * A full call to MAP NIL with a single sequence argument no longer conses.
6737 * fixes to problems pointed out by Martin Atzmueller:
6738 * The manual page no longer talks about multiprocessing as though
6739 it were currently supported.
6740 * The ILISP support patches have been removed from the distribution,
6741 because as of version 5.10.1, ILISP now supports SBCL without us
6742 having to maintain patches.
6743 * added a modified version of Raymond Toy's recent CMU CL patch for
6744 EQUALP comparison of HASH-TABLE
6746 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6748 * The system still can't cross-compile itself with
6749 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6750 entails), but at least it can compile more of itself that way
6751 than it used to be able to, and various buglets which were uncovered
6752 by trying to cross-compile itself that way have now been fixed.
6753 * This release breaks binary compatibility again. This time
6754 at least I've incremented the FASL file format version to 2, so that the
6755 problem can be detected reliably instead of just causing weird errors.
6756 * various new style warnings:
6757 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6758 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6759 ** using the lexical binding of a variable named in the *FOO* style
6760 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6761 as specified by ANSI.
6762 * *RANDOM-STATE* is no longer automatically initialized from
6763 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6764 default behavior of the system is to repeat its behavior every time
6765 it's run. If you'd like to change this behavior, you can always
6766 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6767 old convention there was no comparably easy way to get the system to
6768 repeat its behavior every time it was run.
6769 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6770 FTYPE declarations has been removed, in favor of their ANSI
6771 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6772 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6773 the types of their sequence arguments can be determined at compile time.
6774 This is done through a new open code expansion for MAP which eliminates
6775 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6776 argument types can be determined at compile time.
6777 * The optimizer now transforms COERCE into an identity operation when it
6778 can prove that the coerced object is already of the correct type. (This
6779 can be a win for machine generated code, including the output of other
6780 optimization transforms, such as the MAP transform above.)
6781 * Credit information has been moved from source file headers into CREDITS.
6782 * Source file headers have been made more standard.
6783 * The CASE macro now compiles without complaining even when it has
6786 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6788 * (Note that the way that the PCL macroexpansions were rewritten
6789 to accommodate the change in DEFGENERIC below breaks binary
6790 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6791 not run under sbcl-0.6.2. Once we get out of alpha releases,
6792 i.e. hit release 1.0.0, we'll probably try to maintain binary
6793 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6794 and sbcl-1.4.4. Until then, however, it might be fairly common
6795 for maintenance releases to break binary compatibility.)
6796 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6798 * The reporting of unhandled signals has been changed to print some
6799 explanatory text as well as the report form. (Previously only
6800 the report form was printed.)
6801 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6802 it defines, so that the compiler no longer issues undefined function
6803 warnings for compiled-but-not-yet-loaded generic functions.
6804 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6805 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6806 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6807 section of the ANSI spec are supported.
6808 * The "" nickname for the "KEYWORD" package has been removed.
6809 The reader still handles symbol tokens which begin with a package marker
6810 as keywords, but it doesn't expose its mechanism for doing so in the
6811 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6812 * The system now issues STYLE-WARNINGs for contradictory TYPE
6813 proclamations. (Warnings for contradictory FTYPE proclamations would
6814 be nice too, but those can't be done usefully unless the type system
6815 is made smarter about FUNCTION types.)
6816 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6817 systematized, so that "*target-*.lisp is supposed to exist only on the
6818 target and imply that there's a related file which exists on the
6819 host, and *host-*.lisp is supposed to exist only on the host and imply
6820 that there's a related file which exists on the target. This involves a
6821 lot of renaming. Hopefully the acute confusion caused by the renaming
6822 will be justified by the reduction in chronic confusion..
6823 ** runtime-type.lisp -> early-target-type.lisp
6824 ** target-type.lisp -> late-target-type.lisp
6825 ** early-host-format.lisp -> early-format.lisp
6826 ** late-host-format.lisp -> late-format.lisp
6827 ** host-error.lisp -> misc-error.lisp
6828 ** early-error.lisp -> early-target-error.lisp
6829 ** late-error.lisp -> late-target-error.lisp
6830 ** host-defboot.lisp -> early-defboot.lisp
6831 ** code/misc.lisp -> code/target-misc.lisp
6832 ** code/host-misc.lisp -> code/misc.lisp
6833 ** code/numbers.lisp -> code/target-numbers.lisp
6834 ** code/early-numbers.lisp -> numbers.lisp
6835 ** early-host-type.lisp -> early-type.lisp
6836 ** late-host-type.lisp -> late-type.lisp
6837 ** host-typep.lisp -> typep.lisp
6838 ** load.lisp -> target-load.lisp
6839 ** host-load.lisp -> load.lisp
6840 ** host-disassem.lisp -> disassem.lisp
6841 ** host-insts.lisp -> insts.lisp
6842 ** byte-comp.lisp -> target-byte-comp.lisp
6843 ** host-byte-comp.lisp -> byte-comp.lisp
6844 ** host-signal.lisp -> signal.lisp
6845 ** host-defstruct.lisp -> defstruct.lisp
6846 ** late-target-type.lisp -> deftypes-for-target.lisp
6847 Furthermore, several other previously target-only files foo.lisp (e.g.
6848 hash-table.lisp and random.lisp) have been split into a target-and-host
6849 foo.lisp file and a target-only target-foo.lisp file, with their key type
6850 definitions in the target-and-host part, so that the cross-compiler will
6851 know more about target types.
6852 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6853 gone away. In their place are various *BACKEND-FOO* variables
6854 corresponding to the slots of the old structure.
6855 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6856 into the target SBCL has been fixed.
6857 * The chill.lisp system for loading cold code into a running SBCL
6859 * Support for the CMU CL "scavenger hook" extension has been removed.
6860 (It was undocumented and unused in the CMU CL sources that SBCL was
6861 derived from, and stale in sbcl-0.6.1.)
6862 * Various errors in the cross-compiler type system were detected
6863 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6864 (enabling various consistency checks). Many of them were fixed,
6865 but some hard problems remain, so the compiler is back to
6866 running without *TYPE-SYSTEM-INITIALIZED* for now.
6867 * As part of the cross-compiler type system cleanup, I implemented
6868 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6869 * I have started adding UNCROSS calls throughout the type system
6870 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6871 on cross-compiler input files will be able to go away, and various
6873 * CONSTANTP now returns true for quoted forms (as explicitly required
6876 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6878 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6879 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6880 (MAKE-LIST -1). In the longer term, it ought to become true
6881 that declarations are assertions even at SAFETY 1. For now, it's not
6882 quite true even at SAFETY 3, but it's at least more nearly true..
6883 (Note that this change seems to increases the size of the system by
6884 O(5%) and to decrease the speed of the compiler by 20% or more.)
6885 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6886 for the problem of printing dozens of lines of distracting information
6887 about low-level system machinery as part of the top stack frame
6888 on entry to the debugger when an undefined function was called.
6889 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6890 is not reset to COMMON-LISP-USER.
6891 * Compilation of stuff related to dyncount.lisp has been made conditional
6892 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6893 smaller. The various dyncount-related symbols have been moved into
6894 a new "SB-DYNCOUNT" package.
6895 * tty-inspect.lisp has been renamed to inspect.lisp.
6896 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6897 feature has gone away. (When we eventually port to other flavors of
6898 libc and/or Unix, we'll try to make the differences between flavors
6899 invisible at the user level.)
6900 * Various other *FEATURES* tags, and/or their associated conditionals,
6901 have been removed if obsolescent, or given better documentation, or
6902 sometimes given more-mnemonic names.
6904 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6906 * tidied up "make.sh" script
6907 * tidied up system directory structure
6908 * better "clean.sh" behavior
6909 * added doc/FOR-CMUCL-DEVELOPERS
6910 * many many small tweaks to output format, e.g. removing possibly-confusing
6911 trailing #\. character in DESCRIBE-INSTANCE
6912 * (EQUALP #\A 'A) no longer signals an error.
6913 * new hashing code, including EQUALP hashing
6914 * tidied up Lisp initialization and toplevel
6915 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6916 * command line argument processing
6917 * added POSIX-GETENV function to deal with Unix-ish environment variables
6918 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6919 terminating SBCL on EOF
6920 * non-verbose GC by default
6921 * There is no more "sbcl" shell script; the sbcl file is now the C
6922 runtime executable (just like CMU CL).
6923 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6925 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6926 symbol and package information as Lisp native symbol and package objects
6927 instead of strings naming symbols and strings naming packages. This way,
6928 whenever packages are renamed (as in warm init), debug information is
6929 transformed along with everything else.
6930 * tweaked the optimization policy declarations which control the building
6931 of SBCL itself. Now, among other things, the system no longer saves
6932 source location debugging information. (This helps two problems at once
6933 by reducing SBCL size and by keeping SBCL from trying to look for its
6934 sources -- which may not exist -- when reporting errors.)
6935 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6936 debugging and testing purposes
6937 * cleaned up printing, making the printer call PRINT-OBJECT for
6938 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6939 methods, giving nearly-ANSI behavior
6940 * converted almost all special variables to use *FOO* naming convention
6941 * deleted PARSE-TIME functionality, since it can be done portably
6942 * moved some files out of cold init into warm init
6943 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6945 * regularized formatting of source files
6946 * added an install.sh script
6947 * fixed ridiculous memory usage of cross-compiler by making
6948 compiler/alloc.lisp not try to do pooling unless it can hook
6949 itself into the GC of the cross-compilation host. Now the system
6950 builds nicely on my old laptop.
6951 * added :SB-ALLOC in target-features.lisp-expr
6952 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6953 was not implemented)
6954 * re-did condition handling and note reporting in the compiler. Notes
6955 are no longer handled by signalling conditions. Style warnings
6956 and warnings are handled more correctly and reported in such a way
6957 that it's easy to find one or the other in your output (so that you
6958 can e.g. figure out which of many problems caused COMPILE-FILE to
6960 * changed the severity of several compiler warnings from full WARNING
6961 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6962 compiler note reporting so that it doesn't use the condition system
6963 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6964 COMPILE-FILE command)
6965 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6966 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6967 no longer supported, since their implementation was deeply intertwingled
6968 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6969 * removed bogus "support" for compiler macros named (SETF FOO), and
6970 removed the compiler macro for SETF INFO (but only after making a fool
6971 of myself on the cmucl-imp mailing list by posting a bogus patch for
6972 DEFINE-COMPILER-MACRO..)
6973 * Compiled files containing forms which have side effects on the Lisp
6974 reader (such as DEFPACKAGE forms) are now handled more correctly.
6975 (Compiler queuing of top level lambdas has been suppressed by setting
6976 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6977 * deleted various currently-unused source files, e.g. gengc.lisp. They
6978 may be added back at some point e.g. when porting to other architectures,
6979 but until they are it's distracting to distribute them and to try to
6981 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6982 there were so many of them they're just distractions, and UNCROSS is
6983 known to be able to handle the current sources
6984 * moved PROFILE functionality into TRACE, so that it will be clear
6985 how the wrapping and unwrapping of functions when you profile them
6986 interacts with the wrapping and unwrapping of functions when you
6987 trace them. (Actually, the functionality isn't there yet, but at least
6988 the interface specification is there. Hopefully, the functionality will
6989 arrive with some future maintenance release.)
6990 * removed host-oops.lisp
6991 * changed signature of QUIT function to allow UNIX-CODE argument
6992 * fixed READ-SEQUENCE bug
6993 * tweaked verbose GC output so that it looks more like the progress
6994 output that ANSI specifies for functions like LOAD
6995 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6996 * added <http://sbcl.sourceforge.com> to the banner information printed by