1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.49:
3 * enhancement: errors from FD handlers now provide a restart to remove
5 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
7 * enhancement: location of user or system initialization file can now easily
8 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
9 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
10 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
11 the thunk, as a keyword argument, :arguments.
12 * enhancement: constraint propagation is simplified (and sped up) when
13 COMPILATION-SPEED > SPEED.
14 * optimization: extracting bits of a single-float on x86-64 has been
15 optimized. (lp#555201)
16 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
18 * meta-optimization: improved compilation speed, especially for large
19 functions. (lp#792363 and lp#394206)
20 * bug fix: bound derivation for floating point operations is now more
21 careful about rounding possibly closing open bounds. (lp#793771)
22 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
23 backwards incompatible change in 1.0.48.27)
24 * bug fix: occasional debugger errors in when a type-error occured in a
25 function with dynamic-extent &rest list.
26 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
27 boa-construtors can be used to initialized structure slots.
28 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
29 (lp#795705, regression)
30 * bug fix: DIRECTORY works better on logical pathnames.
31 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
32 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
33 * bug fix: the compiler no longer constant-folds NaNs in
34 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
35 * bug fix: FORMAT now handles floating point rounding correct, eg.
36 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
38 * bug fix: style warning during lambda-list introspection of generic
39 functions with both optional and key argments.
41 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
42 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
43 interrupts for its body.
44 * enhancement: source locations are now available for files loaded as
45 source, compile-time-too evaluation, and initialization files.
46 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
47 virtual source-file information, eg. overriding input-file of COMPILE-FILE
48 when a temporary file is used for compilation.
49 * enhancement: ASDF has been updated to version 2.015.3.
50 * enhancement: backtraces involving frames from the default evaluator are
52 * enhancement: RUN-PROGRAM works with user-defined binary input and output
54 * enhancement: more informative compile-time warnings and runtime errors for
55 type-errors detected at compile-time.
56 * enhancement: deadlock detection for mutexes and spinlocks.
57 * enhancement: dynamic-extent for &rest lists stack allocate only their
58 spines, not their argumets. While portable code should not rely on this,
59 particularly in combination with inlining, it should make dynamic-extent
61 * enhancement: SB-POSIX improvements:
62 ** WNOHANG and WUNTRACED are exported.
63 ** SYSCALL-ERROR now also provides the name of the failing system call.
64 * enhancement: --script improvements:
65 ** errors on standard input, output, and error streams are handled and
66 cause scripts to exit silently, making them easier to use in shell
68 ** backtraces from scripts now go to standard error instead of the
69 terminal even if one is available.
70 ** --script can be an argument, causing the script to be loaded from
72 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
73 strings to foreign memory.
74 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
75 a file, making it easier to understand heap dynamics.
76 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
77 allows the compiler to automatically elide rest-list allocation so long as
78 the call sites are in functions that the compiler knows cannot escape.
80 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
81 especially in safe code when none of the required arguments have changed
83 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
84 uninterruptible, as well as blocking reads from socket streams created
85 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
86 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
87 from the to-char if the from-char is not a dispatch-macro character.
88 * bug fix: references to undefined variables in function calls that are
89 optimized away now signal a runtime error. (lp#722734)
90 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
91 types from a function defined in the same file. (regression from
93 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
95 * bug fix: spurious errors during QUIT when standard streams were closed.
97 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
98 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
99 years, is now no longer supported.
100 * enhancement: read() and write() have been added to SB-POSIX.
101 * enhancement: types of DEFSTRUCT constructors are proclaimed more
102 accurately, allowing better typechecking of call-sites.
103 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
104 are no longer caught. (reverted to pre 1.0.34 behaviour)
105 * optimization: slightly faster ISQRT. (lp#713343)
106 * bug fix: better support for Solaris /bin/sh in sh-based tests.
107 * bug fix: TRACE behaves better when attempting to trace undefined
108 functions. (lp#740717)
109 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
110 to (FUNCALL #'(LAMBDA ...) ...).
111 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
112 a compile-time error. (lp#720382)
113 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
115 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
116 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
117 optimization. (regression from 1.0.45.18/1.0.46.15)
118 * bug fix: package locks did not protects against compile-time side-effects
119 of DEFUN. (lp#675584)
120 * bug fix: --dynamic-space-size argument is validated more carefully.
122 * bug fix: memory fault from printing a malformed simple-condition.
124 * bug fix: redefining classes so that slot-definition classes change now
125 engages the obsolete instance protocol. (lp#766271)
126 * bug fix: constant improper lists could break source coverage recording.
128 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
131 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
132 * bug fix: fix mach port rights leaks in mach exception handling code on
133 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
135 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
136 * enhancement: redefinition warnings for macros from different files. (lp#434657)
137 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
138 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
139 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
140 processed using EVAL -- now the appropriate toplevel form is reported instead.
141 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
142 declarations. (lp#726331)
143 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
144 that NIL/NULL is excluded from the type.
145 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
147 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
149 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
150 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
151 stack-allocated values out of their dynamic-extent. (lp#310175)
152 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
153 x86-64 builds caused a type-error.
154 * bug fix: calling COMPILE with something else than a lambda-expression as the
155 second argument reports a more sensible error. (lp#718905)
156 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
157 are detected. (lp#520607)
158 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
160 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
161 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
162 methods. (regression from 1.0.45.18)
163 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
164 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
165 * bug fix: several foreign functions accepting string also accepted NIL and
166 consequently caused a memory fault at 0 now signal a type-error instead.
168 * bug fix: under rare circumstances, constraint propagation could rewrite a
169 variable reference to refer to a variable not in scope, causing an error
170 during physical environment analysis when attempting to close over the
171 variable. (lp#551227)
172 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
174 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
175 * enhancement: largefile support on Solaris.
176 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
177 arguments (lp#710017)
178 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
179 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
181 * optimization: ERROR and CERROR are approximately 5 times faster.
182 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
183 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
184 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
185 up instance creation in those cases.
186 * optimization: arithmetic operations with multiple constant arguments in now
187 have them reduced at compile-time. (lp#676414)
188 * optimization: determining current character position on string-streams for
189 pretty-printing was overly slow.
190 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
191 lifetime analysis to overwrite closed-over variables (lp#681092).
192 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
193 were not handled correctly (lp#713063).
194 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
196 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
197 mistake. (lp#667297).
198 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
199 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
200 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
201 unintern the wrong symbol with the same name. (lp#693796)
202 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
203 making it possible to restore the initial table if it has been messed up.
206 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
207 * enhancement: ~/ and ~user/ are treated specially in pathnames.
208 Refer to documentation for details.
209 * enhancement: ASDF has been updated to version 2.010.
210 * optimization: mutated closed-over variables that are only accessed by
211 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
212 declared to be DYNAMIC-EXTENT) are stored directly in their containing
213 stack frame, rather than allocating a VALUE-CELL (lp#586103).
214 * optimization: UNWIND-PROTECT cleanup functions are now declared
216 * bug fix: backtracing function with &REST arguments now shows the full
217 argument list. (lp#310173)
218 * bug fix: return types for functions with complex lambda-lists are now
219 derived properly (lp#384892)
220 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
221 long string arguments slowed the compiler down to a crawl.
222 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
223 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
224 in the DEFMETHOD body.
225 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
226 messages, being instead replaced with the corresponding function name.
227 * bug fix: don't derive overly complex unions of numeric types for arithmetic
228 operators. (lp#309448)
230 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
231 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
232 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
233 * enhancement: ALLOCATION-INFORMATION also provides the page the object
235 * enhancement: default dynamic-space size can be configured at build-time
236 without touching source, using the --dynamic-space-size argument to make.sh.
237 * enhancement: DESCRIBE recognizes symbols naming optimization policy
238 qualities, and mentions ALWAYS-BOUND declarations.
239 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
241 * enhancement: ASDF has been updated to 2.009.
242 * enhancement: the system detects known type-erros in calls better,
243 signalling a full warning about violated proclaimed FTYPEs and violations
244 of derived FTYPEs within the same file, including self-calls.
245 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
246 * optimization: constant-folding exploits numeric and character types, in
247 addition member types.
248 * optimization: numeric, character and member types that are inhabited by
249 exactly one value are tested with EQL.
250 * optimization: more conditional branches are eliminated during IR1.
251 Branches are simplified before performing if/if-conversion, and simple
252 equivalent branches (that only read the same constant or variable) are
254 * improvements to the Windows port:
255 ** change: canonical unparsing form for pathname namestrings now uses / as
256 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
257 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
258 on Windows. (thanks to Kalyanov Dmitry)
259 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
261 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
262 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
263 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
264 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
266 * bug fix: interrupts arriving during CL:OPEN caused an error.
267 * bug fix: overeager character buffering could cause input to block
268 spuriously when reading from a pipe (lp#643686)
269 * bug fix: more efficient timer expiry should avoid starvation on systems
270 where number of SIGALRMs per second is restricted. (lp#375515)
271 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
272 * bug fix: compile-times no longer scale linearly with the size of
273 quoted lists in source-code. (lp#654289)
274 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
275 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
276 so badly. (lp#654485)
277 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
278 an error for eg. STRUCTURE. (lp#458015)
279 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
280 (lp#613871, thanks to Roman Marynchak)
281 * bug fix: more reliable &REST list type derivation. (lp#655203)
282 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
283 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
284 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
285 also declared NOTINLINE. (lp#655581)
286 * bug fix: the compiler could attempt to emit constant left shifts of
287 greater value than n-word-bits. (lp#309063)
288 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
289 type information for the function being set. (lp#659220)
290 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
291 containing self-calls were recompiled with a new signature, and failed
292 to warn when a self-call using the old signature was left in. (lp#655126)
293 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
294 :DEFAULT when the default external had character size other than 8 bits.
296 * bug fix: derived types of functions in the same file were implicitly
297 trusted, leading to potential heap corruption when those function were
298 defined incompatibly. (lp#657499)
299 * bug fix: existing ASDF source registries are ignored when building
301 * bug fix: short-form DEFSETF checks that the second argument is a symbol
302 (lp#655824, thanks to Roman Marynchak)
303 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
304 package-lock violation was detected. (lp#660752)
305 * bug fix: the system can store different docstrings for a single function
306 under different names. (lp#661631, regression from 1.0.29.24)
307 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
308 properly. (lp#384801)
309 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
310 of specified length could confuse the type derivation in unsafe code.
312 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
313 fork with multiple Lisp threads running is made on every platform,
314 not just Darwin. (lp#451111)
315 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
316 around when core was saved, which could cause undefined behaviour when the
318 * bug fix: Allow UNTRACE of functions that are no longer defined
319 (lp#667657, thanks to Attila Lendvai)
320 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
321 compile-time warning (lp#664373, thanks to Stas Boukarev)
323 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
324 * incompatible change: FD-STREAMS no longer participate in the serve-event
325 event-loop by default. (lp#316072)
326 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
327 affects streams from CL:OPEN.
328 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
329 default, but this is liable to change: applications needing serve-event
330 for socket streams should explicitly request it using :SERVE-EVENTS T
332 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
334 * enhancement: CLOS effective method functions and defclass slot typechecking
335 function now have debug names for use in backtraces and profiles.
336 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
338 * enhancement: symbols are printed using fully qualified names in several
339 error and warning messages which are often associated with package
340 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
341 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
342 thanks to Andrew Golding)
343 * bug fix: reading /proc files on Linux works. (lp#425199)
344 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
346 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
347 breaking code that tried to write the value of a printer control variable.
348 (lp#581564, thanks to Stas Boukarev)
349 * bug fix: WRITE compiler macro did not handle output stream designators
350 correctly. (lp#598374, thanks to Stas Boukarev)
351 * bug fix: better availability of names of foreign functions in backtraces
352 on Linux. (lp#626962, thanks to Stas Boukarev)
353 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
354 lp#627581, thanks to Josh Elsasser and Jim Wise)
355 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
356 thanks to Josh Elsasser)
357 * bug fix: using aliases for builtin classes as defmethod specializers
358 without adding DEFTYPEs for them works. (lp#618387)
359 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
361 * bug fix: legally dynamic-extent lists and vectors used as
362 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
363 * bug fix: inline-expansion creating references to dead lambda-variables
364 (lp#454681, thanks to Alexey Dejneka)
365 * bug fix: better error message for bogus numerical arguments to RANDOM.
366 (lp#598986, thanks to Stas Boukarev)
367 * bug fix: the compiler occasionally inlined references from incompatible
368 environments occurs. (lp#308951)
369 * bug fix: the compiler threw an error when trying to compile a local
370 function (labels or flet) known to take a specialized complex argument.
371 (not in launchpad, reported by sykopomp in #lispgames)
372 * bug fix: package-locks failed to protect against compile-time effects of
373 DEFUN when the symbol previously had a macro definition. (lp#576637)
374 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
375 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
376 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
377 * bug fix: evaluation in debugger REPL works using the global context when
378 in frames that do not have sufficient debug information.
379 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
381 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
383 * bug fix: interrupt taking longer than the requested period caused SLEEP
384 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
386 changes in sbcl-1.0.42 relative to sbcl-1.0.41
388 ** Cross-compilation host is now specified to make.sh using
389 command-line argument --xc-host=<command> instead of a positional
390 argument. (thanks to Daniel Herring)
391 ** Install location can be specified to make.sh using command-line
392 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
393 * optimization: The default implementation of
394 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
395 * enhancement: Explicit memory barrier operations are now available for use
396 by multithreaded code. See documentation for details.
397 * enhancement: Experimental support for threading on Linux/PPC.
398 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
399 * bug fix: EXPT signals an error if first argument is a zero and second
400 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
401 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
402 (lp#576594, thanks to Roman Marynchak)
403 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
404 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
406 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
407 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
408 cached, leading to many fewer expensive calls to
409 COMPUTE-APPLICABLE-METHODS.
410 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
411 CLASS argument, search for and call an appropriate optimized ctor function
413 * bug fix: WRITE always returns the correct value.
415 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
416 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
417 * bug fix: Name conflicts between symbols passed as arguments to a single
418 call to IMPORT no longer add multiple symbols with the same name to the
419 package (detectable via DO-SYMBOLS).
420 * bug fix: support building without the dlshim on darwin x86 and x86-64
422 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
424 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
425 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
427 * bug fix: linkage-table entries on PPC now no longer overflow their
428 space allocation (potentially causing crashes if they are written out
430 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
431 platforms, preventing the GC from seeing stale pointers on the control
432 stack in subsequent GCs (which would, and does, break invariants).
433 * bug fix: 32-bit unicode external formats now work on big-endian systems.
434 * bug fix: Literal characters with code points greater than about 32767
435 now work on PPC UNICODE builds.
436 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
437 high order bits are explicitly cleared out. In some contrived situations,
438 this could lead to wrong results in mixed real/complex float arithmetic.
439 * bug fix: Fix function/macro redefinition warnings when building with
440 clisp. (lp#576787, thanks to Josh Elsasser)
441 * new platform: experimental support for ppc/openbsd (thanks to Josh
443 * bug fix: Floating-point traps now work on ppc/linux.
445 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
446 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
447 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
448 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
449 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
450 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
451 SB-THREAD:GRAB-MUTEX.
452 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
453 contain additional data structures and tools for concurrent programming;
454 at the moment it contains a lock-free queue, and a lock-free mailbox
456 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
457 GET-MUTEX but takes &key rather than &optional parameters. Also added
458 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
460 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
461 SB-THREAD:WAIT-ON-SEMAPHORE.
462 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
464 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
465 conditions to defer the deadline for forever.
466 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
468 * enhancement: errors from NO-APPLICABLE-METHOD and
469 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
470 generic function call.
471 * enhancement: SB-BSD-SOCKET improvements
472 ** sockets and socket streams now have a more informative printed
473 representation based on the corresponding SOCKET-NAME and
475 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
477 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
478 CL:CLOSE when appropriate, and no longer disassociates the stream
479 from the socket if close failed. (lp#543951)
480 * improvements to the instrumenting profiler
481 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
482 ** optimization: counters no longer use locks for the overflow mode.
483 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
484 incurred an off-by-one miscount.
485 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
486 * enhancement: improved DEFMETHOD pretty-printing.
487 * enhancement: perform range reduction when arguments are too large for
488 x87's transcendentals (instead of returning 0). (lp#327192)
489 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
490 some of CL-PPCRE's macros. (lp#570079)
491 * enhancement: our machine code is slightly less hostile to valgrind on
493 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
494 to Robert Swindells and Aleksej Saushev)
495 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
496 * bug fix: a rare case of startup-time page table corruption.
497 * bug fix: a semaphore with multiple waiters and some of them unwinding due
498 to timeouts could be left in an inconsistent state.
499 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
500 * bug fix: misoptimization of multiplication by one in
501 (SB-C::FLOAT-ACCURACY 0) policies.
502 * bug fix: miscounts in SB-PROFILE.
503 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
504 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
505 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
506 up itself" (March 2010) for further details.
507 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
508 against length of the list if the element is found before the specified
509 END is reached. (thanks to Alec Berryman, lp#554385)
510 * bug fix: errors signalled during package graph modification no longer
511 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
512 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
513 :SB-DOC feature. (lp#552564)
514 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
515 * bug fix: more robust runtime executable path detection. (lp#375549)
516 * bug fix: GCD always returns positive values. (lp#413680)
517 * bug fix: Converting division to multiplication by reciprocal handles
519 * bug fix: We were too eager in eliding range reduction tests on x87.
520 The maximal magnitude is 2^63, not 2^64.
521 * bug fix: Transforms for TRUNCATE don't die when the result is completely
523 * bug fix: Maybe restore buildability on Alpha.
524 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
526 * bug fix: RANDOM-STATE can be printed readably again.
527 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
528 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
529 types) could result in type mismatches during compilation.
531 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
532 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
533 stack frame thrown from.
534 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
535 compiler optimization qualities inside dynamic extent of its body.
536 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
537 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
539 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
540 constraint propgation, allowing better compilation eg. when used to
541 access structures with WITH-SLOTS. (lp#520366)
542 * optimization: the compiler is now more aware of the type of the underlying
543 storage vector for multidimensional simple arrays resulting in better code
544 for accessing such arrays.
545 * optimization: passing NIL as the environment argument to TYPEP no longer
546 inhibits optimizing it. (lp#309788)
547 * optimization: more efficient register usage when handling single-float
548 arguments on x86-64. (thanks to Lutz Euler)
549 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
550 pre-allocated temporary vectors. (lp#496249)
551 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
552 in :INITIAL-CONTENTS. (lp#523612)
553 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
554 functions. (lp#524707)
555 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
556 WITH-SLOTS usages during compilation.
557 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
558 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
559 all x86oid platforms with :UD2-BREAKPOINTS target feature.
560 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
561 instruction (tested on x86oid linux with ud2-breakpoints).
562 * bug fix: slam.sh now works on win32.
563 * bug fix: better differences of numeric types. (lp#309124)
564 * bug fix: arrays declared intersection and union types can have their
565 upgraded element type derived. (lp#316078)
566 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
567 threads started during profiling. (lp#472499)
568 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
570 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
571 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
572 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
573 values instead of signaling an error. (lp#309093)
574 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
576 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
577 declarations (lp#497321)
578 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
579 and failed to detect circular lists (lp#452008)
580 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
582 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
583 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
584 due to it, so that handlers can run.
585 * bug fix: reparsing undefined types if they have become defined since
587 * bug fix: missing &REST type in a proclamation for a function with both
588 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
589 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
590 expanded calls (lp#542174)
591 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
592 than just at toplevel form.
594 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
595 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
596 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
597 but work on type specifiers.
598 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
599 to name a type specifier.
600 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
601 specifier is valid where "valid" basically means "would be accepted as
602 second argument of TYPEP".
603 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
604 returns the function's declared, or derived FTYPE.
605 * new feature: SB-POSIX now supports accessing the d_ino member of
606 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
607 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
608 provide for seeding a RANDOM-STATE object with user-provided data or
609 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
610 attempt to initialize the returned state from the operating system's
611 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
612 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
613 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
614 * bug fix: Fix grammar and style issues for the docstrings of
615 printer-related variables and functions. (Thanks to mon_key; launchpad
617 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
619 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
620 in a row even though a handler defered the deadline long into the
622 * bug fix: A deadline handler was run without interrupts enabled for a
623 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
624 in infinitely spinning, non-killable threads.
625 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
626 before reaching the erring stack frame.
627 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
628 real power. (launchpad bug lp#525949)
629 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
630 GENCGC platforms. (launchpad bug lp#529014)
631 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
632 (launchpad bug lp#525916)
633 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
634 (Thanks to Robert Goldman)
636 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
637 * optimization: ROUND with a single single-float or double-float argument
638 is properly inlined when possible.
639 * optimization: Slightly better code is generated for integer<->float
640 conversions and for single-float<->double-float conversions on x86-64.
641 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
642 code for 32-bit and 64-bit rotations on x86-64.
643 * bug fix: The install script changes the ownership of directories as well
644 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
645 launchpad bug lp#508485)
646 * bug fix: TRUNCATE with a single single-float or double-float argument is
647 properly inlined when possible. (launchpad bug lp#489388)
648 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
649 no longer causes a compiler error on x86 and ppc.
650 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
651 always relative to *READTABLE* rather than the passed argument.
653 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
654 * minor incompatible change: threading support is now enabled by default
656 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
658 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
659 are now caught and reported just like errors during macroexpansion.
660 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
661 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
662 * enhancement: ASDF systems can now depends on SB-QUEUE.
663 * fixes and improvements related to Unicode and external formats:
664 ** bug fix: error handling and restart usage in the ucs-2 external format
666 ** there is now an implementation of the ucs-4 external format.
667 ** the utf-16 and utf-32 external formats are supported.
668 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
669 in the environment. setenv() and unsetenv() are also provided. (reported by
670 Fare Rideau; launchpad bug lp#460455)
671 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
672 loading. This ensures sensible errors for .FASL files from other
673 implementations on case-insensitive filesystems. (reported by Willem
674 Broekema; launchpad bug lp#489417)
675 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
676 Willem Broekema; launchpad bug lp#489698).
677 * bug fix: some minor code rearrangements to reenable warning-free building
678 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
679 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
681 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
684 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
685 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
686 * improvement: support O_LARGEFILE access to files larger than 2GB on
687 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
688 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
689 definitions for methods specializing on the passed class itself.
690 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
691 definitions for methods specializing on the passed class itself, or on
693 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
694 about itself during the build (e.g. for M-? in Slime), if this flag is
695 enabled in customize-target-features.lisp. This will increase the core
696 size by about 5-6mb, though, so it's mostly interesting to SBCL
698 * new feature: various GENCGC tuning parameters have been experimentally
699 documented and exported from SB-EXT. See documentation for details.
700 * fixes and improvements related to Unicode and external formats:
701 ** the Unicode character database has been upgraded to the
702 Unicode 5.2 standard, giving names and properties to a number of new
703 characters, and providing a few extra characters with case
705 ** improvement: restarts for providing replacement input/output on coding
706 errors for fd-stream external formats.
707 ** improvement: where :<encoding> is a keyword corresponding to an
708 external format the system supports, it is now possible to specify
709 (:<encoding> :replacement <character>) as an external format which will
710 automatically substitute <character> on encoding or decoding errors for
711 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
713 ** improvement: the file streams underlying the standard streams (such as
714 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
715 which uses the replacement mechanism to handle encoding errors,
716 preventing various infinite error chains and unrecoverable I/O
718 ** minor incompatible change: the utf-8 external format now correctly
719 refuses to encode Lisp characters in the surrogate range (char-codes
720 between #xd800 and #xdfff).
721 ** fix a typo preventing conversion of strings into octet vectors
722 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
724 ** fix a bug in the octet multibyte handling of decoding errors and the
725 USE-VALUE restart. (launchpad bug lp#314939)
726 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
727 restart on fd-stream decoding errors.
728 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
729 error is near the end of file.
730 ** fix a double-error case in unibyte octet conversions, when the first
731 use of USE-VALUE is ignored.
732 ** fix bugs in handling of undefined code points in unibyte encodings.
733 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
734 streams after an UNREAD-CHAR.
735 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
736 object is allocated in a boxed region of dynamic space.
737 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
738 fork with multiple Lisp threads running is made, instead of going
739 ahead with unpredictable consequences. (reported by Leslie Polzer)
740 * bug fix: uses of slot accessors on specialized method parameters within
741 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
742 error while finalizing the class. This fix may cause classes with slot
743 accessors to be finalized later than previously. (reported by Lars Rune
744 Nøstdal; launchpad bug lp#473699)
745 * bug fix: restore buildability on the MIPS platform. (regression from
746 1.0.30.38, reported by Samium Gromoff)
747 * bug fix: inspecting closures is less likely to fail with a type error.
748 * bug fix: no timer starvation when setting the system clock back.
749 (launchpad bug lp#460283)
750 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
751 standard pprint dispatch table as specified by CLHS.
752 * bug fix: give CLISP a hint about a type declaration to enable it to build
753 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
755 * bug fix: correctly dump literal objects in defaulting forms of arglists.
756 (reported by Attila Lendvai; launchpad bug lp#310132)
757 * bug fix: distinguish in type specifiers between arrays that might be
758 complex and arrays that are definitely complex. (launchpad bug lp#309129)
759 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
760 type. (reported by Levente Mészáros; launchpad bug lp#485972)
761 * bug fix: setting the value of a symbol-macro within a method in the
762 presence of type declarations works properly again. (reported by Iban
763 Hatchondo; launchpad bug lp#485019)
765 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
766 * optimization: faster FIND and POSITION on strings of unknown element type
767 in high SPEED policies. (thanks to Karol Swietlicki)
768 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
770 * improvement: better error signalling for bogus parameter specializer names
771 in DEFMETHOD forms (reported by Pluijzer)
772 * bug fix: DELETE-FILE once again works on logical pathnames (regression
774 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
776 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
777 removes previous default initargs (reported by Lars Rune Nøstdal and
779 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
780 lambda-lists. (reported by Peter Seibel)
781 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
782 correctly when starting from an executable core without saved runtime
783 options (reported by Faré Rideau, thanks to Zach Beane)
784 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
785 an optimization note instead. (reported by Martin Cracauer)
786 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
787 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
788 new process group if it doesn't need to share stdin with the sbcl
789 process. (thanks to Leslie Polzer)
790 * bug fix: SATISFIES could be misoptimized to refer to a local function.
791 (reported by Stanislaw Halik)
793 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
794 * improvement: stack allocation is should now be possible in all nested
795 inlining cases: failure to stack allocate when equivalent code is manually
796 open coded is now considered a bug.
797 * improvements related to Unicode:
798 ** the Unicode character database has been upgraded to the
799 Unicode 5.1 standard, giving names and properties to a number of new
800 characters, and providing a few extra characters with case
802 ** the system now recognizes and produces names for Unicode Hangul
804 ** the EBCDIC-US external-format is now supported for octet operations
805 (as well as for stream operations).
806 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
807 be used to output toplevel compile-time effects into a separate .CFASL
809 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
810 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
812 * optimization: TRUNCATE on known single- and double-floats is upto 25%
814 * optimization: division of floating point numbers by constants uses
815 multiplication by reciprocal when an exact reciprocal exists.
816 * optimization: multiplication of single- and double-floats floats by
817 constant two has been optimized.
818 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
819 sufficient type information is available. (thanks to Leslie Polzer)
820 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
821 known structure objects are as efficient as defstruct generated accessors.
822 * optimization: unused vector creation can now be optimized away.
823 * improvement: ASDF systems can now depends on SB-INTROSPECT.
824 * improvement: a STYLE-WARNING is signalled when a generic function
825 clobbers an earlier FTYPE proclamation.
826 * improvement: the compiler is able to track the effective type of
827 generic function across method addition and removal even in the
828 absence of an explicit DEFGENERIC.
829 * improvement: DESCRIBE now reports on symbols naming undefined
830 but assumed or declared function as well.
831 * improvement: recompilation of systems using SB-GROVEL now works
832 (thanks to Leslie Polzer)
833 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
834 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
836 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
837 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
838 well as user defined declaration names.
839 ** VARIABLE-INFORMATION is now aware of alien variables.
840 * improvement: improved address space layout on OpenBSD (thanks to Josh
842 * improvement: pretty-printing of various Lisp forms has been improved
843 (thanks to Tobias Rittweiler)
844 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
845 unused were deleted in safe code. (reported by John Fremlin)
846 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
848 * bug fix: some out-of-line array predicates were missing (reported by
850 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
852 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
853 (thanks to Larry D'Anna)
854 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
855 as well. (reported by Josh Elsasser)
856 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
857 leading to possible attempts to delete the same file twice. See docstring
858 on DELETE-FILE for details. (reported by John Fremlin)
859 * bug fix: DELETE-FILE once again deletes the file named by the pathname
860 designator argument, rather than its truename. (reported by Luis
862 * bug fix: the low-level debugger had 32-bit assumptions and was missing
863 information about some array types. (thanks to Luis Oliveira)
864 * bug fix: moderately complex combinations of inline expansions could
865 be miscompiled if the result was declared to be dynamic extent.
866 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
867 form (+ <variable> <integer>) were miscompiled under certain
869 * bug fix: in some cases no compiler note about failure to stack allocate
870 was emitted, even if the objects were in fact heap allocated.
871 * bug fix: minor violation of "otherwise inaccessible" rule for stack
872 allocation could cause objects users might reasonably expect to
873 be heap allocated to be stack allocated.
874 * bug fix: DESCRIBE signalled an error for generic functions under
875 certain circumstances. (thanks to Leslie Polzer)
876 * bug fix: Fixed spelling of an error message.
878 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
879 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
880 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
881 of SB-THREAD:THREAD-ERROR-THREAD.
882 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
883 * new feature: docstrings for local and anonymous functions are no longer
884 discarded. (thanks to Leslie Polzer)
885 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
886 values in other threads.
887 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
888 about object allocation.
889 * optimization: division of a real float by a complex float is implemented
890 with a specialised code sequence.
891 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
892 keywords is an order of magnitude faster.
893 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
894 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
895 methods, and similarly for non-standard metaclass classes as long as there
896 are no methods additional on MAKE-INSTANCE.
897 * optimization: more efficient type-checks for FIXNUMs when the value
898 is known to be a signed word on x86 and x86-64.
899 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
900 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
902 * optimization: compiler is smarter about delegating argument type checks to
904 * optimization: several character functions are now compiled somewhat more
905 efficiently. (reported by Lynn Quam)
906 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
907 * improvement: less unsafe constant folding in floating point arithmetic,
908 especially for mixed complex/real -float operations.
909 * optimization: constant double and single floats are stored in native
910 unboxed format on x86[-64].
911 * optimization: smarter code for arithmetic operations with constant floats,
912 complex floats, or integers on x86[-64].
913 * optimization: smarter code for conjugate/multiplication of float complexes
914 and abs/negate of floats on x86-64.
915 * optimization: more efficient complex float and real float operations on
917 * improvement: complex float division is slightly more stable.
918 * improvement: DESCRIBE output has been reworked to be easier to read and
919 contains more pertinent information.
920 * improvement: failure to provide requested stack allocation compiler notes
921 provided in all cases (requested stack allocation not happening without a
922 note being issued is now considered a bug.)
923 * bug fix: SB-POSIX exports the documented types and functions
924 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
925 types. (reported by "abhi")
926 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
927 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
928 (thanks to Paul Khuong)
929 * bug fix: looping around HANDLER-CASE could silently consume stack space
930 on each iteration. (reported by "foobar")
931 * bug fix: better error signalling when calls to functions seeking elements
932 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
933 (reported by Tobias Rittweiler)
934 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
935 directory components now works as it used to. (various prolems reported by
936 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
937 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
938 (reported by Elliot Slaughter, thanks to Stas Boukarev)
939 * bug fix: bogus undefined variable warnings from fopcompiled references to
940 global variables. (thanks to Lars Rune Nøstdal)
941 * bug fix: foreign function names should now appear in backtraces on
942 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
943 * bug fix: SETF compiler macro documentation strings are not discarded
945 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
946 (thanks to Alex Plotnick)
947 * bug fix: SLEEP accepts large integer arguments, truncating them to
948 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
949 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
950 * bug fix: compiler notes for expensive slot type checks could be emitted
951 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
953 changes in sbcl-1.0.29 relative to 1.0.28:
954 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
955 https://bugs.launchpad.net/sbcl
956 Bugs can be reported directly there, or by sending email to
957 sbcl-bugs@lists.sourceforge.net
958 (no subscription required.)
959 * minor incompatible change: under weak type checking policy integer
960 types are weakened less aggressively.
961 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
962 allowed to return, which causes SBCL to quit with exit status 0. Previously
963 if the function returned with a small integer return value, that value
964 was accidentally reused as the exit status.
965 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
966 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
967 :HASH-FUNCTION argument. Refer to user manual for details.
968 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
970 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
971 microseconds since the Unix epoch on all platforms.
972 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
973 allows the compiler to safely elide boundedness checks for special
975 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
976 the symbol, prohibits both lexical and dynamic binding. This is mainly an
977 efficiency measure for threaded platforms, but also valueable in
979 * new feature: UNC pathnames are now understood by the system on Windows.
980 * optimization: the compiler uses a specialized version of FILL when the
981 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
983 * optimization: accesses to potentially non-simple arrays where element type
984 is known are 50% faster.
985 * optimization: compiler now generates faster array typechecking code.
986 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
988 * optimization: multidimensional array accesses in the absence of type
989 information regarding array rank are approximately 10% faster due to
990 open coding of ARRAY-RANK.
991 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
992 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
994 * optimization: result of call to VECTOR can now be stack allocated.
995 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
996 as long as the resulting array is one-dimensional and has a known
997 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
998 length of the list matches the known length of the vector does not
999 allocate the list as an intermediate step. Ditto for VECTOR and simple
1001 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1002 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1003 known element type, and is known to be simple and one dimensional.
1004 * improvement: SBCL now emits a compiler note where stack allocation was
1005 requested but could not be provided (not in all cases, unfortunately)
1006 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1007 * improvement: pretty-printing loop has been implemented properly. (thanks
1008 to Tobias Rittweiler)
1009 * documentation: CLOS slot typechecing policy has been documented.
1010 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1011 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1012 pointer, leading to memory faults. (thanks to Bart Botta)
1013 * bug fix: better floating point exception handling on x86/OpenBSD.
1014 (thanks to Josh Elsasser)
1015 * bug fix: exit status from QUIT when called under --script was lost
1016 (reported by Hubert Kauker)
1017 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1018 same implementation of FILL to initialize the array, even if a more
1019 efficient one was available (reported by Stas Boukarev, thanks to
1021 * bug fix: potential miscompilation of array stack allocation on x86 and
1022 x86-64. (reported by Time Tossavainen)
1023 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1024 result in their subforms being treated as top level forms. (reported by
1026 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1027 than a machine register could leave garbage in the high bits of the
1028 result register (bug 316325).
1029 * bug fix: disable address space randomization Linux/x86-64 as well,
1030 not just x86-64. (reported by Ken Olum)
1031 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1032 generate incorrect code.
1033 * bug fix: #201; type inference for CONS and ARRAY types could derive
1034 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1035 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1036 could not be assigned to or bound with PROGV. (reported by Lorenz
1038 * bug fix: the value of CL:- in the inspector was the previous expression
1039 evaluated rather than the expression being evaluated.
1040 * bug fix: constants can no longer be locally declared special.
1041 * bug fix: signals delivered to threads started from foreign land (read:
1042 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1043 thread by blocking all signals and resignalling.
1044 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1045 from :INITFORM, if any.
1047 changes in sbcl-1.0.28 relative to 1.0.27:
1048 * a number of bugs in cross-compilation have been fixed, with the ultimate
1049 result that building under (at least) clisp should be much more reliable.
1050 * minor incompatible changes: echo-streams now propagate unread-char to the
1051 underlying input stream, and no longer permit unreading more than one
1053 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1054 frames, allowing for instance more reliable backtraces.
1055 * improvement: the debugger REPL can now reference lexical variables
1056 by name directly for code compiled with (DEBUG 3).
1057 * improvement: errors from malformed declarations now have better source
1058 paths associated with them. (thanks to Tobias Rittweiler)
1059 * optimization: faster local calls on x86/x86-64
1060 * bug fix: some error messages for out-of-bound array indexes confused the
1061 index and the bound. (thanks to Stas Boukarev)
1062 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1064 * bug fix: running regressions tests in shells without OSTYPE set now works.
1065 (reported by Harald Hanche-Olsen)
1066 * bug fix: more robust static space exhaustion signalling from
1067 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1068 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1069 docstring away instead of storing it under names such as (LAMBDA (X)).
1070 (reported by Leslie Polzer)
1071 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1072 (thanks to Ole Arndt for the patch)
1073 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1074 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1075 potentially-invalid effective methods in its cache.
1076 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1077 instances as well (thanks to Paul Khuong)
1078 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1079 SB-POSIX:WAITPID and their C equivalents.
1080 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1082 changes in sbcl-1.0.27 relative to 1.0.26:
1083 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1084 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1085 * improvement: the system either recovers from stack exhaustion or dies
1086 properly as opposed to leaving the user uncertain of whether the handler
1087 trampled on some random memory next to the stack or having to rely on
1088 --lose-on-corruption (which is still a good idea to use in production
1089 because stack exhaustion can happen in signal handlers which will likely
1091 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1092 1.0.25.37, reported by Harald Hanche-Olsen)
1093 * bug fix: work around signal delivery bug in darwin (regression from
1094 1.0.25.44, reported by Sidney Markowitz)
1095 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1097 changes in sbcl-1.0.26 relative to 1.0.25:
1098 * incompatible change: an interruption (be it a function passed to
1099 INTERRUPT-THREAD or a timer function) runs in an environment where
1100 interrupts can be enabled. The interruption can use
1101 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1102 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1103 potentially running out of stack. Keep in mind that in the absence
1104 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1105 acquiring a lock can enable interrupts.
1106 * incompatible change: GC-OFF and GC-ON are removed, as they were
1107 always unsafe. Use WITHOUT-GCING instead.
1108 * new feature: runtime option --disable-ldb
1109 * new feature: runtime option --lose-on-corruption to die at the
1110 slightest hint of possibly non-recoverable errors: running out of
1111 memory, stack, alien stack, binding stack, encountering a memory
1112 fault, etc. In the absence of --lose-on-corruption a warning is
1114 * enhancement: detect binding stack exhaustion
1115 * enhancement: detect alien stack exhaustion on x86/x86-64
1116 * improvement: generally more stable and reliable interrupt handling
1117 * improvement: there is a per thread interruption queue,
1118 interruptions are executed in order of arrival
1119 * improvement: a repeating timer reschedules itself when the it has
1120 finished, but expiration times are spaced equally. If an
1121 expiration time is in the past it will trigger after a short grace
1122 period that may give a chance to other things to run.
1123 * optimization: slightly faster gc on multithreaded builds
1124 * optimization: faster WITHOUT-GCING
1125 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1126 important locks so that the debugger/handler doesn't produce
1127 recursive errors or deadlock.
1128 * bug fix: real-time signals are not used anymore, so no more
1129 hanging when the system wide real-time signal queue gets full.
1130 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1132 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1133 * bug fix: fix random memory faults related to interrupts on alpha
1134 * bug fix: fix random memory faults related to interrupts on sparc
1135 * bug fix: fix deadlocks related to starting threads
1136 * bug fix: fix deadlines on locks on futex platforms
1137 * bug fix: restore errno in signal handlers
1138 * bug fix: fix deadlocks related to hash tables
1139 * bug fix: fix deadlocks in pcl
1141 changes in sbcl-1.0.25 relative to 1.0.24:
1142 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1143 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1144 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1145 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1146 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1147 better name and does not return values so stale on multiprocessor systems.
1148 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1150 * improvement: unithread builds keep track of MUTEX-VALUE.
1151 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1152 stream anymore making it thread safe to have a concurrent reader and
1153 a writer, for instance, in a pipe.
1154 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1155 arguments, making compiler-macros for SETF-functions able to inspect
1156 their constant arguments.
1157 * improvement: COMPILE-FILE reports times with millisecond accuracy
1158 (thanks to Luis Oliveira)
1159 * optimization: CHAR-CODE type derivation has been improved, making
1160 TYPEP elimination on subtypes of CHARACTER work better. (reported
1161 by Tobias Rittweiler, patch by Paul Khuong)
1162 * bug fix: setting alien structure fields of type struct by value now
1163 computes the right offset for the memory copy.
1164 * bug fix: compilation problem involving inlined calls to aliens with
1165 result type VOID. (reported by Ken Olum)
1166 * bug fix: #235a; sequential inline expasion in different policies no
1167 longer reuses the functional from the previous expansion site.
1168 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1169 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1170 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1171 cause an implied type redefinition. Regression from 1.0.21.29.
1172 * bug fix: sign-extension of small signed return values now works with C
1173 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1174 * improvements to the Windows port:
1175 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1176 Westfold, thanks to Rudi Schlatte)
1178 changes in sbcl-1.0.24 relative to 1.0.23:
1179 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1180 vector of a multidimensional SIMPLE-ARRAY.
1181 * new feature: the system now signals a continuable error if standard
1182 readtable modification is attempted. (thanks to Tobias Rittweiler)
1183 * new feature: DIRECTORY has been extended with a non-standard keyword
1184 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1185 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1186 has been robustified and documented better. (thanks to Robert Goldman)
1187 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1188 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1189 * tradeoff: constant FORMAT control strings are now compiled unless
1190 SPACE > SPEED (previously only when SPEED > SPACE.)
1191 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1193 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1195 * bug fix: lexical type declarations are now correctly reported by
1196 SB-CLTL2. (reported by Larry D'Anna)
1197 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1198 using UTF-8 as external format. (thanks to Luis Oliveira)
1199 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1200 are signalled correctly. (thanks to Stas Boukarev)
1201 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1202 designator. (thanks to Tobias Rittweiler)
1203 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1204 designator, and returns T instead of the function. (thanks to
1206 * bug fix: direct superclasses of STANDARD-CLASS and
1207 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1208 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1209 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1210 when no class with the named slot yet exists no longer causes a
1211 compile-time style-warning.
1212 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1213 in safe code. (reported by Didier Verna)
1214 * bug fix: #430; nested structure constructors can stack allocate.
1215 * bug fix: on some 64-bit platforms dynamic space size was truncated
1216 to #xffff0000 bytes. (reported by Benjamin Lambert)
1217 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1218 REPL unusable. (reported by Daniel Herring)
1219 * bug fix: return values of READ-SEQUENCE did not take :START into
1220 account on file streams, regressions since 1.0.12.22. (reported by
1221 Thomas Russ, patch by Paul Khuong)
1222 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1223 method specializer used to confuse permuation vector optimization.
1224 * bug fix: system inserted bogus implicit type declarations for local
1225 special variables in DEFMETHOD bodies.
1226 * bug fix: #354; duplicated frames in backtraces due to
1227 non-tail-call-optimized XEPs to functions with return type NIL
1229 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1230 initializes structure object slots according to DEFSTRUCT initforms,
1231 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1232 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1233 (reported by Bruno Haible and Stephen Wilson)
1234 * bug fix: #395; fill-pointer output streams used now support
1235 element-type BASE-CHAR as well.
1236 * bug fix: compiler error when attempting to derive return value of
1237 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1239 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1241 * bug fix: Mac OS X binaries should now be portable between Leopard
1244 changes in sbcl-1.0.23 relative to 1.0.22:
1245 * enhancement: when disassembling method functions, disassembly
1246 for the associated fast function is also produced.
1247 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1249 * optimization: printing with *PRINT-PRETTY* true is now more
1250 efficient as long as the object being printed doesn't require
1251 special handling by the pretty printer.
1252 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1253 now interact correctly with type declarations.
1254 * partial bug fix: PCL detects infinite recursion during wrapper
1255 validation. (thanks to Attila Lendvai)
1256 * bug fix: #426; nested function calls are inlined properly.
1257 Previously if FOO was an inline function, in calls of the form
1258 (FOO (FOO ...)) the outer call was not inlined.
1259 * bug fix: long long arguments passed in registers to alien
1260 functions on PowerPC Linux and NetBSD are now handled correctly
1261 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1263 changes in sbcl-1.0.22 relative to 1.0.21:
1264 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1265 for the shared object in the current directory, but passes the native
1266 namestring of the designated pathname to the operation system's shared
1267 object loading function as-it.
1268 * minor incompatible change: --disable-debugger toplevel option now takes
1269 effect before processing of initialization files and --eval or --load
1271 * new feature: new commandline argument: --script, which supports
1272 shebang lines. See documentation for details. (based on work by
1274 * new feature: SAVE-LISP-AND-DIE can save current values of
1275 --dynamic-space-size and --control-stack-size in the executable core,
1276 causing it to skip normal runtime option processing. See documentation
1277 for details. (thanks to Zach Beane)
1278 * enhancement: inoccous calls to EVAL or generic functions dispatching
1279 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1280 * enhancement: the system no longer resignals errors from --load and
1281 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1282 associated with the original error to be lost. (thanks to Ariel
1284 * enhancement: :DONT-SAVE keyword argument has been added to
1285 LOAD-SHARED-OBJECT for controlling interaction with
1286 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1287 the effects of an earlier LOAD-SHARED-OBJECT call.
1288 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1289 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1290 provided. (reported by Cedric St-Jean)
1291 * bug fix: circularity handling in the reader did not treat raw
1292 structure slots correctly. (reported by Cedric St-Jean)
1293 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1294 file descriptors when there were none.
1295 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1296 was broken. (reporteed by Willem Broekema)
1297 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1298 pathnames without a directory.
1299 * bug fix: COMPILE-FILE did not warn about undefined variable
1300 references at toplevel, and LOAD of the resulting fasl did
1301 not signal an error.
1302 * bug fix: functions with non-required arguments used to end up with
1303 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1304 * bug fix: redefining a function with non-required arguments didn't
1305 update the system's knowledge about its call signature properly.
1306 * bug fix: fixed #431; incompatible alien record type redefinitions
1307 are detected and handled. (reported by Neil Haven)
1308 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1309 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1311 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1312 after alien stack frames.
1313 * bug fix: strings passed to mk{s,d}temp lacked null termination
1315 changes in sbcl-1.0.21 relative to 1.0.20:
1316 * new feature: the compiler is able to track the effective type of a
1317 generic function across method addition and removal.
1318 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1319 appropriately typed structure slots without locking.
1320 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1321 information like those gathered by TIME using a programming-friendly
1323 * new feature: TIME reports time taken even if the form performs a
1324 non-local transfer of control.
1325 * enhancement: reduced conservativism on GENCGC platforms: on
1326 average 45% less pages pinned (measured from SBCL self build).
1327 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1328 mutate constant symbols or violate declaimed type of the symbol.
1329 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1330 sleeping on the semaphore in heavily contested semaphores.
1331 * bug fix: semaphores and condition variables were not interrupt
1333 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1334 owned by other threads anymore.
1335 * bug fix: FIND on lists called KEY outside the specified
1336 subsequence. (reported by budden)
1337 * bug fix: LOG doesn't use single-float intermediate results when
1338 given mixed integer and double-float arguments, leading to better
1339 precision. (reported by Bob Felts)
1340 * bug fix: LOG with base zero returned values of inconsistent type.
1342 changes in sbcl-1.0.20 relative to 1.0.19:
1343 * minor incompatible change: OPTIMIZE qualities
1344 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1345 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1346 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1347 * documentation: some slot access efficiency guidelines have been
1348 added to the user manual.
1349 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1350 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1351 as ASSOC and MEMEBER.
1352 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1353 to more efficient EQ-comparison versions more often.
1354 * optimization: enhanced derivation of DOLIST iteration variable type
1356 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1358 * optimization: runtime lookup of function definitions can be
1359 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1360 * optimization: compiler is able to derive the return type of
1361 (AREF (THE STRING X) Y) as being CHARACTER.
1362 * optimization: CLRHASH on empty hash-tables no longer does pointless
1363 work. (thanks to Alec Berryman)
1364 * optimization: REPLACE deftransforms don't punt when :START1 or
1366 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1367 no longer emits a code deletion note. (reported by Andrew
1369 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1370 functions with an odd number of &OPTIONAL arguments, a &REST
1371 argument, and one or more &KEY arguments at the call site.
1372 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1373 arguments appeared at call sites as well.
1374 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1375 READ-LINE &co can no longer read from them afterwards. (reported
1377 * bug fix: fixed #427: unused local aliens no longer cause compiler
1378 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1380 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1381 alien-stack leakage. (reported by Andy Hefner)
1382 * bug fix: PROGV signals an error when an attempt to violate declared
1383 type of a variable or bind a constant is made.
1384 * bug fix: SET signals an error when an attempt to violate declared
1385 type of a variable is made.
1386 * bug fix: restart computation during the execution of a restart
1387 test function no longer causes infinite recursion. (reported by
1389 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1390 signals an error. (thanks to Pierre Mai)
1391 * bug fix: EXPORT left symbol unexported in conflict situations.
1392 (thanks to Michael Weber)
1393 * bug fix: correctly handle name conflicts involving CL:NIL.
1394 (thanks to Michael Weber)
1395 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1396 conflicts arising from USEing package with conflicting symbols
1397 correctly. (thanks to Michael Weber)
1399 changes in sbcl-1.0.19 relative to 1.0.18:
1400 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1401 warnings that go otherwise unhandled will be muffled if they are
1402 of the type that's the value of this variable.
1403 * optimization: stack allocation is slightly more efficient on x86
1405 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1406 where a raw slot always is initialized using the initform whose
1407 type is not know sufficiently well a compile-time are now compiled
1408 correctly. (reported by John Morrison)
1409 * bug fix: compiler no longer makes erronous assumptions in the
1410 presence of non-foldable SATISFIES types.
1411 * bug fix: stack analysis missed cleanups of dynamic-extent
1412 arguments in non-let-converted calls to local functions.
1413 * improvements to the Windows port:
1414 ** adjusted address spaces for building on both Win32 and
1415 Win64. (thanks for John Connors)
1416 * fixed some bugs revealed by Paul Dietz' test suite:
1417 ** interval arithmetic during type derivation used inexact integer
1418 to single-float coercions.
1419 ** arithmetic operations involving large integers and single
1420 floats give the same results in compiled and interpreted code.
1421 ** deriving the result type of COERCE no longer signals an error
1422 if the derived type of the second argument is a MEMBER type
1423 containing invalid type specifiers.
1424 ** ADJOIN with constant NIL as second argument works correctly.
1425 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1427 changes in sbcl-1.0.18 relative to 1.0.17:
1428 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1429 profiles only the current thread.
1430 * minor incompatible change: changes to SYMBOL-VALUE of constants
1431 defined with DEFCONSTANT now signal an error.
1432 * enhancement: SB-SPROF now has support for wallclock profiling,
1433 and is also able to profile specific threads. REPORT output
1434 has also additional sorting options.
1435 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1437 * optimization: structure allocation has been improved
1438 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1439 ** out of line constructors are ~10% faster.
1440 ** inline constructors are ~15% faster.
1441 ** inline constructors are capable of dynamic extent allocation
1442 (generally on x86 and x86-64, in some cases on other platforms
1444 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1446 * optimization: file compiler is now able to coalesce non-circular
1447 lists, non-base strings, and bit-vectors. Additionally, constants
1448 are never referenced through SYMBOL-VALUE at runtime.
1449 * optimization: code defining methods on PRINT-OBJECT (and other
1450 generic functions in the COMMON-LISP package) now loads faster.
1451 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1453 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1454 fasl is now deleted. (reported by Attila Lendvai)
1455 * bug fix: READ-LINE always returned NIL for the last line in files.
1456 (reported by Yoshinori Tahara)
1457 * bug fix: more accurate disassembly annotations of foreign function
1458 calls. (thanks to Andy Hefner)
1459 * bug fix: trimming non-simple strings and non-string string
1460 designators when the there is nothing to trim works properly.
1461 (thanks to James Knight)
1462 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1463 (thanks to Travis Cross)
1464 * fixed some bugs revealed by Paul Dietz' test suite:
1465 ** NIL is a valid function name (regression at 1.0.13.38)
1466 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1467 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1468 fill pointers properly (regression at 1.0.12.23)
1469 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1470 displacement indices properly (regression at 1.0.12.23)
1472 changes in sbcl-1.0.17 relative to 1.0.16:
1473 * temporary regression: user code can no longer allocate closure
1474 variable storage on stack, due to bug 419 without explicitly
1475 requesting it. Please consult sbcl-devel for advice if you need to
1476 use this feature in the meanwhile.
1477 * new feature: runtime argument --control-stack-size can be used to
1478 adjust thread default control stack size.
1479 * enhancement: improved TIME output
1480 ** all times are reported using the measured accuracy (milliseconds
1481 for real and GC times, microseconds for everything else.)
1482 ** processor cycle counts on x86 and x86-64.
1483 ** interpreted forms are counted for both evaluator modes.
1484 ** number of lambdas converted by the compiler is reported.
1485 ** CPU percentage report (computed from real and total run time.)
1486 ** more comprehensive run time reporting, using a condenced format
1487 ** interperted form, lambda, and page fault counts are omitted
1489 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1491 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1492 * optimization: two argument forms of LAST are upto ~10% faster
1493 in normal SPEED policies.
1494 * optimization: NCONC no longer needs to heap cons its &REST list
1495 in normal SPEED policies.
1496 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1497 to Sidney Markowitz)
1498 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1499 regression since 1.0.9.1. (thanks to Eric Marsden)
1500 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1501 since 1.0.15.36. (thanks to Paul Khuong)
1502 * bug fix: LAST when always returned the whole list when given a bignum
1503 as the second argument.
1504 * bug fix: dynamic extent allocation of nested lists and vectors
1505 could leak to otherwise accessible parts.
1506 * bug fix: invalid optimization of heap-allocated alien variable
1508 * bug fix: fasl header checking is less vulnerable to different
1509 platform word lengths.
1510 * bug fix: more correct assembler syntax for GNU binutils
1511 2.18.50.0.4 support. (thanks to Marijn Schouten)
1512 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1514 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1515 declarations) successfully. (reported by Attila Lendvai)
1517 changes in sbcl-1.0.16 relative to 1.0.15:
1518 * minor incompatible change: revert the changes to sb-posix's error
1519 signaling added in 1.0.14.
1520 * minor incompatible change: change PROBE-FILE back to returning
1521 NIL whenever we can't get a truename, as was the case before 1.0.14.
1522 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1523 inherits from ERROR instead of just CONDITION.
1524 * new feature: SB-INTROSPECT can provide source locations for instances
1525 as well. (thanks to Tobias Rittweiler)
1526 * optimization: binding special variables now generates smaller code
1527 on threaded platforms.
1528 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1529 and cases where no :TEST is given but the compiler can infer that
1530 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1531 * optimization: better LOGNOT on fixnums.
1532 * optimization: modular arithmetic for a particular requested width
1533 is implemented using a tagged representation unless a better
1534 representation is available.
1535 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1536 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1537 for wellformedness and returns a specialized vector. (reported by
1538 Francois-Rene Rideau)
1539 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1540 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1541 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1542 unscheduling timer at the same time as another timer fires.
1543 * bug fix: don't reschedule timers for dead threads.
1544 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1545 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1546 bogus errors if select() was interrupted.
1547 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1549 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1550 * enhancement: cleaner backtraces for interactive interrupts, as
1551 well as other cases where the interesting frames used to be
1552 obscured by interrupt handling frames.
1553 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1554 now supported, and tracing a whole package using (TRACE "FOO") now
1555 traces SETF-functions as well.
1556 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1557 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1558 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1559 * unreadably printed representation of hash-tables now includes
1561 * bug fix: partially fixed #188: type propagation from assignments
1562 is now more efficient.
1563 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1564 'DOUBLE-FLOAT) are not flushable.
1565 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1566 full address of the object, and none of the tag bits.
1567 * bug fix: readably printing hash-tables now respects other printer
1568 control variables. (reported by Cedric St-Jean)
1569 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1570 keyword with MAKE-HASH-TABLE.
1571 * bug fix: export SB-POSIX:MKSTEMP.
1572 * bug fix: SORT was not interrupt safe.
1573 * bug fix: XREF accounts for the last node of each basic-block as
1575 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1576 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1577 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1578 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1579 create obsolete instances in the case of redefinition or
1580 obsoletion of a superclass. (thanks to Andy Hefner)
1581 * bug fix: Support for the Alpha architecture has been revived; it had
1582 suffered somewhat from lack of maintenance since sbcl-1.0.
1583 * improvements to the Windows port:
1584 ** The system detects the codepage to use at startup, instead of
1585 using the value from the saved core. (thanks to Kei Suzuki)
1587 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1588 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1589 (see documentation for details.)
1590 * revived support for OpenBSD (contributed by Josh Elsasser)
1591 * partially fixed bug #108: ROOM no longer suffers from occasional
1592 (AVER (SAP= CURRENT END)) failures.
1593 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1594 bodies no longer cause a WARNING to be signalled. (reported by
1596 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1597 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1598 the bug in TRUNCATE.) (reported by Michael Weber)
1599 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1600 no samples. (reported by Andy Hefner)
1601 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1602 no longer appear as (NIL ...) frames in backtraces.
1603 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1604 is now actually exported from SB-EXT as documented. (reported by
1606 * bug fix: sb-aclrepl now correctly understands how to inspect
1607 single-floats on 64-bit platforms where single-floats are not boxed.
1608 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1609 yet been finalized. (reported by Levente Meszaros)
1610 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1611 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1612 SBCL-specific optimize qualities.
1614 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1615 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1616 an executable in the search path, and does so in the child
1617 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1618 been removed; it can be found in the CVS history, for somebody who
1619 needs that search behavior (see the manual).
1620 * minor incompatible change: compiler policy re. weakening type
1621 checks has changed: now type checks are weakened only if SAFETY < 2
1623 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1624 unparsing of directory pathnames as files. Analogously,
1625 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1626 filename to parse into a directory pathname.
1627 * enhancement: implicit generic function creation now signals a
1628 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1629 users can bind handlers for and muffle around calls to LOAD.
1630 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1631 to be used (using the default stream external format), and allows
1632 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1633 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1634 strings and vectors whose element-type or simplicity is not fully
1635 known at compile-time.
1636 * optimization: STRING-TRIM and related functions no longer allocate
1637 a new string when no trimming needs to be performed. These functions
1638 are also faster than before when the input string has been declared
1640 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1641 * optimization: READ-LINE is significantly faster for files containing
1643 * optimization: non-open coded uses of character comparison operators
1644 (e.g. char=) no longer cons when called with more than one parameter
1645 on platforms supporting dynamic-extent allocation.
1646 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1647 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1648 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1650 * bug fix: some sequence functions elided bounds checking when
1652 * bug fix: too liberal weakening of union-type checks when SPEED >
1654 * bug fix: more bogus fixnum declarations in ROOM implementation
1657 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1658 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1659 :SYNCHRONIZED argument, which makes the hash-table safe for
1660 concurrent accesses (but not iteration.) See also:
1661 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1662 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1663 * optimization: CONCATENATE on strings is an order of magnitude faster
1664 in code compiled with (> SPEED SPACE).
1665 * optimization: SUBSEQ is ~50% faster on lists.
1666 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1667 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1668 END is smaller then START.
1669 * bug fix: SB-PROFILE will no longer report extra consing for nested
1670 calls to profiled functions.
1671 * bug fix: ROOM implementation had bogus fixnum declarations which
1672 could cause type-errors when calling ROOM on large images.
1673 * bug fix: if file compilation is aborted, the partial fasl is now
1674 deleted, and COMPILE-FILE returns NIL as the primary value.
1675 * bug fix: number of thread safety issues relating to SBCL's internal
1676 hash-table usage have been fixed.
1677 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1678 be returned from its body when the values were being returned
1679 using unknown-values return convection and the W-P-O was wrapped
1680 inside an UNWIND-PROTECT.
1681 * bug fix: sb-posix should now compile again under Windows, enabling
1682 slime to work again.
1684 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1685 * incompatible change: hash-table accessor functions are no longer
1686 automatically protected by locks. Concurrent accesses on the same hash-table
1687 from multiple threads can give inconsistent results or even corrupt the
1688 hash-table completely. Multi-threaded applications should do their own
1689 locking at the correct granularity. In the current implementation it is
1690 still safe to have multiple readers access the same table, but it's not
1691 guaranteed that this property will be maintained in future releases.
1692 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1693 and will signal an error at runtime.
1694 * enhancement: SB-THREAD package now exports a semaphore interface.
1695 * enhancement: CONS can now stack-allocate on x86 and
1696 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1698 * enhancement: nested lists can now be stack allocated on
1699 platforms providing stack allocation support.
1700 * enhancement: dynamic-extent support has been extended to support
1701 cases where there are multiple possible sources for the stack
1703 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1704 if the mutex is uncontested on Linux.
1705 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1706 as specified by the CLHS. (thanks to Tobias Rittweiler)
1707 * bug fix: NaN comparison now works on x86-64.
1708 * bug fix: CLOSE :ABORT T on a stream with pending output now
1710 * bug fix: instances of non-standard metaclasses using standard
1711 instance structure protocol sometimes missed the slot type checks
1713 * bug fix: known functions can be inlined in high-debug code.
1715 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1716 * minor incompatible change: the MSI installer on Windows no longer
1717 associates .lisp and .fasl files with the installed SBCL.
1718 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1719 on Windows. (thanks to Luis Oliviera)
1720 * new feature: SB-CLTL2 contrib module now implements
1721 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1722 * optimization: scavenging weak pointers is now more efficient,
1723 requiring O(1) instead of O(N) per weak pointer to identify
1724 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1725 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1726 method bodies using constant slot-names when the first argument is
1727 a specializer parameter for the method.
1728 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1729 names, when the class of the instance is a direct instance
1730 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1731 as slow as the constant slot-name case.)
1732 * optimization: member type construction is now O(N) instead
1734 * optimization: UNION and NUNION are now O(N+M) for large
1735 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1737 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1738 now more readable in environments like Slime which display it.
1739 (thanks to Tobias C. Rittweiler)
1740 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1741 was able to infer the correct argument type for the object on which
1742 the CAS operation was being performed.
1743 * bug fix: copy propagation interfered with parallel assignment
1744 semantics in local calls. (reported by Paul Khuong)
1745 * bug fix: the signed modular fixnum shift compiled to wrong code on
1746 x86 and x86-64. (spotted by a slight modification to some of
1749 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1750 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1751 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1752 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1754 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1755 and generic function now print the object identity for anonymous
1756 instances. (thanks to Attila Lendvai)
1757 * enhancement: as an extension to MOP, SBCL now supports SETF of
1758 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1759 (thanks to Attila Lendvai)
1760 * enhancement: sb-cover has an alternate annotation mode which puts
1761 the form annotations at the car of the form, instead of annotating
1762 it completely. The benefit of this mode is that it shows better
1763 which forms were instrumented by the compiler.
1764 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1765 by printer control variables. (reported by Dan Corkill)
1766 * bug fix: system leaked memory when delayed output was performed by
1767 the OS in smaller chunks then expected. (thanks to David Smith)
1768 * bug fix: system leaked memory when file streams were not closed
1770 * bug fix: large objects written to slow streams that were modified
1771 after the write could end up with the modified state written to
1772 the underlying file descriptor.
1773 * bug fix: multiple threads operating in parallel on the same stream
1774 could cause buffer-overflows.
1775 * bug fix: source location information is stored correctly
1776 (broken since 1.0.6). This bug would generally show up as the
1777 Slime debugger highlighting the wrong form when the sldb-show-source
1779 * bug fix: Branch forms are again annotated as branches in the sb-cover
1781 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1782 on x86-64. (reported by Gregory Vanuxem)
1783 * bug fix: EQUALP could return wrong results for structures with raw
1784 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1785 word). (reported by Vjacheslav Fyodorov)
1786 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1789 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1790 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1791 atomic compare-and-swap operations on threaded platforms.
1792 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1793 allows assigning a global minimum value to optimization qualities
1794 (overriding proclamations and declarations).
1795 * enhancement: closed over variables can be stack-allocated on x86
1797 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1799 * optimization: slot definition lookup is now O(1). This speeds up
1800 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1801 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1802 * optimization: ASSOC and MEMBER can now be open-coded for all
1803 combinations of keyword arguments when second argument is constant
1804 and SPEED >= SPACE. In other cases a specialized version is
1806 * bug fix: using obsoleted structure instances with TYPEP and
1807 generic functions now signals a sensible error.
1808 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1809 (reported by Kristoffer Kvello)
1810 * bug fix: backtrace construction is now more careful when making
1811 lisp-objects from pointers on the stack, to avoid creating bogus
1812 objects that can be seen by the GC.
1813 * bug fix: defaulting of values in contexts expecting more than 7
1814 variables now works on x86-64. (reported by Christopher Laux)
1815 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1817 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1818 as the property-list of a symbol.
1819 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1820 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1821 situations requested, are once again file-compileable. (reported
1824 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1825 * MOP improvement: support for user-defined subclasses of
1826 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1827 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1828 the expansion of DEFMETHOD, is responsible for generating a form
1829 which creates a list of specializers when evaluated. Additional
1830 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1831 debugging and introspective support.
1832 * minor incompatible change: the (unsupported) spinlock interface
1833 has changed: free spinlock now has the value NIL, and a held spinlock
1834 has the owning thread as its value.
1835 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1836 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1838 * enhancement: name of a socket-stream is now "a socket" instead of
1839 "a constant string".
1840 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1841 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1842 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1843 for generic functions. (Thanks to Tobias C. Rittweiler)
1844 * optimization: bignum printing speed has been improved by 20-40%
1845 (depending on the bignum size.)
1846 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1848 * bug fix: the cache used by the CLOS to store precomputed effective
1849 methods, slot offsets, and constant return values is now thread and
1851 * bug fix: generic function dispatch function updating is now thread
1852 and interrupt safe (in the sense that the known issues have been
1854 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1855 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1856 * bug fix: asdf systems with dependencies to the SB-POSIX or
1857 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1858 * bug fix: interrupt safety of applicable method computation has been
1861 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1862 * new contrib: sb-cover, an experimental code coverage tool, is included
1863 as a contrib module.
1864 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1865 significantly faster.
1866 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1867 produce more efficient code on x86-64 if the compiler can determine
1868 that (+ INDEX <constant>) does not require a bounds check and FOO
1869 has an element type at least 8 bits wide.
1870 * enhancement: a new, experimental synchronous timeout facility is
1871 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1872 * enhancement: when a symbol name conflict error arises, the
1873 conflicting symbols are always printed with a package prefix.
1874 (thanks to Kevin Reid)
1875 * enhancement: stepping is now once again supported on the SPARC and
1876 MIPS platforms. (It is also now more likely to work on CheneyGC
1878 * enhancement: sb-sprof can now also track and report accurate call
1880 * bug fixes: the treatment of non-standard subclasses of
1881 SB-MOP:SPECIALIZER is more correct.
1882 * incompatible change: PURIFY no longer copies the data from the
1883 dynamic space into the static and read-only spaces on platforms
1884 that use the generational garbage collector
1885 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1887 * bug fix: GC race condition occasionally resulting in crashes with
1888 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1890 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1892 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1893 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1894 * bug fix: an asynchronous interrupt could previously leave the
1895 system running with GC inhibited.
1896 * bug fix: a DECLARE form evaluated at top-level now causes an error
1897 rather than silently (or verbosely) returning NIL.
1898 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1899 result in a error being signalled due to source form lookup errors.
1900 (reported by Peter Graves)
1902 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1903 * incompatible change: removed writer methods for host-ent-name,
1904 host-ent-addresses -- changing the values did not update the DNS
1906 * minor incompatible change: changed experimental JOIN-THREAD interface
1907 * documentation: the manual now lists reader and writer methods
1908 in class slot documentation sections. (thanks to Richard M Kreuter)
1909 * documentation: unwinding from asyncronous events has been
1910 documented as unsafe.
1911 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1912 in multithreaded application code.
1913 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1914 platforms. (thanks to James Anderson for the optimization hint)
1915 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1917 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1918 variants no longer cons.
1919 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1920 their NOT- variants no longer cons.
1921 * optimization: EQUAL hash tables no longer use SXHASH for objects
1922 of all data types, but instead use an EQL hash for types for which
1923 EQUAL is the same as EQL.
1924 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1925 are significantly faster.
1926 * optimization: new STRING-OUTPUT-STREAM implementation is much
1927 faster for large outputs and conses 30% less on average.
1928 * enhancement: XREF information is now collected for references made
1929 to global variables using SYMBOL-VALUE and a constant argument.
1930 * enhancement: SIGINT now causes a specific condition
1931 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1932 * bug fix: FILE-POSITION used to signal an error in some cases where
1933 ANSI requires it to return NIL.
1934 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1935 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1936 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1938 * bug fix: bad type declaration in the CLOS implementation has
1939 been fixed. (reported by James Anderson)
1940 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1941 (thanks to Lutz Euler)
1942 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1943 required by the CLHS. (reported by Samium Gromoff)
1944 * bug fix: dead unbound variable references now signal an error.
1945 (reported by Marco Monteiro)
1946 * bug fix: / with an unused value was being deleted in safe code.
1947 (thanks to Marco Monteiro and Kevin Reid)
1948 * bug fix: number of characters that can be written onto a single
1949 line in a file is unlimited.
1950 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1951 been fixed by inhibiting interrupts for when GC is disabled.
1952 * bug fix: some interrupt safety issues with GETHASH, (SETF
1953 GETHASH), CLRHASH and REMHASH have been fixed.
1954 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1955 specifier no longer causes infinite recursion.
1956 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1957 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1958 * bug fix: an &environment argument with the correct variable information
1959 is passed to macros that are expanded during byte compilation.
1960 (reported by Samium Gromoff)
1961 * bug fix: a logic error was causing the hash function for bignums to
1962 have excessive amounts of collisions. (reported by Faré Rideau)
1963 * bug fix: modifying the contents of an array could change the return
1964 value of SXHASH on that array, which is only allowed for strings
1965 and bit vectors. (bug introduced in 0.9.16)
1966 * improvement: the x86-64/darwin port now passes all tests (except
1967 for the debugger tests) but should still be considered
1968 experimental until this is fixed.
1969 * improvement: a style-warning is signaled for CASE (etc) clauses with
1970 duplicate keys. (thanks to Kevin Reid)
1971 * improvement: macos/x86 and macos/x86-64 now use mach exception
1972 handlers for dealing with illegal instructions (for trapping and
1973 error handling) and memory protection violations (for GC).
1975 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1976 * new platform: experimental support for x86-64/darwin (MacOS).
1977 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1978 and getnameinfo sockets functions are used instead of gethostbyaddr
1979 and gethostbyname, on platforms where the newer functions are available.
1980 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1982 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1983 don't print the startup banner, but behave as if --noinform was passed
1984 as a command line argument. (thanks to Kevin Reid)
1985 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1986 * optimization: code using alien values with undeclared types is much faster.
1987 * optimization: the compiler is now able to open code SEARCH in more cases.
1988 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1989 * bug fix: using standardized COMMON-LISP special variables as loop
1990 variables no longer signals bogus package lock violations. (reported
1992 * bug fix: declaring local loop variables to be of a range-limited type
1993 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1994 (reported by Andras Simon)
1995 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1996 bugs remain on x86-64.)
1997 * bug fix: the #= and ## reader macros now interact reasonably with
1998 funcallable instances.
1999 * bug fix: type-checks for function arguments were compiled using the
2000 compiler policy settings of the wrong lexical environment (in 1.0.2
2002 * bug fix: SHADOW accepts characters as string designators, as required
2003 by the spec (thanks to Eric Marsden)
2004 * bug fix: fixed GC safety issues when foreign functions are called with
2005 non-base strings as arguments
2006 * bug fix: more consistent error output for fatal-compiler-warnings, like
2008 * bug fix: functions with proper names were showing up as NIL in
2009 backtraces (reported by Edi Weitz, regression in 1.0.2)
2011 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2012 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2013 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2014 produce more efficient code on the x86 if the compiler can determine
2015 that (+ INDEX <constant>) does not require a bounds check and FOO
2016 has an element type at least 8 bits wide.
2017 * bug fix: references to undefined variables are handled the same way
2018 in toplevel forms as in the normal compiler
2019 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2021 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2022 (thanks to Jon Buller)
2023 * improvement: faster compilation times for complex functions
2024 * improvement: added readlink support to SB-POSIX (thanks to Richard
2027 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2028 * improvement: experimental support for mach exception handling on
2029 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2031 * improvement: support for GBK external format.
2032 (thanks to Chun Tian (binghe))
2033 * improvement: the debugger now displays variables that have been closed
2034 over, in code compiled with (DEBUG 2) or higher
2035 * improvement: support for executable cores on NetBSD (thanks to
2037 * new feature: added a RESTART-FRAME debugger command
2038 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2039 be used to provide an implementation for FILE-POSITION on Gray streams
2040 (thanks to Eric Marsden)
2041 * new feature: add syslog, openlog and closelog support to SB-POSIX
2042 (thanks to Richard Kreuter)
2043 * optimization: the function call overhead in code compiled with
2044 a high DEBUG optimization setting is significantly
2045 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2046 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2047 (thanks to Tony Martinez)
2048 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2049 evaluated once (reported by Kevin Reid)
2050 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2051 works again (thanks to Kilian Sprotte)
2052 * bug fix: an error is signaled for tagbodies with duplicate tags
2053 (thanks to Stephen Wilson)
2054 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2055 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2056 stack frames from alien callbacks.
2057 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2058 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2059 65k pages (thanks to David Woodhouse)
2060 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2062 changes in sbcl-1.0.1 relative to sbcl-1.0:
2063 * new platform: FreeBSD/x86-64, including support for threading.
2064 * new feature: the compiler stores cross-referencing information
2065 about function calls (who-calls), macroexpansion (who-macroexpands)
2066 and special variables (who-binds, who-sets, who-references) for code
2067 compiled with (< SPACE 3). This information is available through the
2068 sb-introspect contrib.
2069 * new feature: users may subclass SEQUENCE, and have instances of
2070 these classes interoperate with standard Common Lisp functions if
2071 a number of methods are defined. (This feature is experimental
2072 and the interface subject to change based on feedback from SBCL
2073 users and the general community)
2074 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2075 x86/x86-64, rather than the previous fixed depth of 8
2076 * improvement: another pthread back-end of mutex "pthread-futex".
2077 * bug fix: non-ascii command-line arguments are processed correctly
2078 (thanks to Yaroslav Kavenchuk)
2079 * bug fix: non-required arguments were not passed correctly when a method
2080 defined using DEFMETHOD was called from a mop-generated method using
2081 CALL-NEXT-METHOD (reported by Pascal Costanza)
2082 * bug fix: recursion is now permitted in accessors through
2083 SLOT-UNBOUND. (reported by Pascal Costanza)
2084 * bug fix: an error was signaled at startup if the HOME environment
2085 variable was defined, but had an empty value (reported by Peter Van Eynde)
2086 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2087 signal a PROGRAM-ERROR, not a BUG.
2088 * bug fix: SB-POSIX:READDIR works when built with large file support.
2089 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2091 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2092 for better automatic indentation support. (thanks to Matt Pillsbury)
2093 * optimization: loading generic functions no longer takes O(n^2) time,
2094 proportional to the amount of methods in the generic function
2095 (reported by Todd Sabin and Jeremy Brown)
2096 * optimization: the FIND and POSITION family of sequence functions
2097 are significantly faster on arrays whose element types have been
2099 * improvements to the Windows port:
2100 ** Intermittent heap corruption problems have been fixed. (thanks
2101 to Alastair Bridgewater)
2102 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2104 ** Lisp is able to unwind foreign exception frames from alien
2105 callbacks. (thanks to Alastair Bridgewater)
2107 changes in sbcl-1.0 relative to sbcl-0.9.18:
2108 * improvement: experimental support for threading on FreeBSD/x86.
2109 (thanks to NIIMI Satoshi)
2110 * improvement: runtime option --dynamic-space-size can be used
2111 to set the size of the dynamic space reserved on startup.
2112 * improvement: floating point modes in effect are now saved in
2113 core, and restored on startup.
2114 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2115 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2116 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2117 threads are not running after *SAVE-HOOKS* have run.
2118 * improvement: writes to CLOS instance slots are type-checked in code
2119 compiled with (SAFETY 3)
2120 * improvement: floating-point exception handling on FreeBSD (thanks to
2122 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2123 (thanks to Zach Beane)
2124 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2126 * improvement: added support for the Shift-JIS external format.
2127 (contributed by NIIMI Satoshi)
2128 * improvement: callbacks are supported on Linux/PPC. (thanks to
2130 * bug fix: compiler bug triggered by a (non-standard) VALUES
2131 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2132 * bug fix: file compiler no longer confuses validated and already
2133 dumped structurres. (reported by Kaersten Poeck)
2134 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2135 fill-pointer signals a type-error as required. (thanks to
2137 * bug fix: disassemly of funcallable instances works.
2138 * bug fix: single stepping on PPC.
2139 * bug fix: fix thread-safety problems in the type system (generally
2140 manifesting as nonsensical errors like "STRING is a bad type specifier
2141 for sequences" or "The value 1 is not of type FIXNUM")
2142 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2143 (reported by Josip Gracin)
2144 * bug fix: an error is signaled for attempts to displace arrays with
2145 incompatible element types (thanks to Mario Mommer)
2146 * bug fix: more correct handling of wide characters in debug info
2147 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2148 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2149 and don't cause extra consing
2150 * optimization: MAP and MAP-INTO are significantly faster on vectors
2151 whose elements types have been declared.
2152 * Improvements to SB-SPROF:
2153 ** Support for allocation profiling
2154 ** Reduced profiling overhead, especially for long profiling runs
2155 * Improvements to the Windows port:
2156 ** floating point exceptions are now reported correctly.
2157 ** stack exhaustion detection works partially.
2158 ** more accurate GET-INTERNAL-REAL-TIME.
2159 ** better RUN-PROGRAM behaviour in case of errors in the child
2161 ** PROBE-FILE now simplifies pathnames correctly.
2162 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2163 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2164 1st 1970 (although time timezone data will be unreliable).
2165 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2167 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2168 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2169 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2171 * bug fix: two potential GC deadlocks affecting threaded builds.
2172 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2173 returns T (reported by Anton Kazennikov)
2174 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2175 with non-variable places
2176 * bug fix: remove a race condition in the setting of
2177 funcallable-instance functions, this should make threaded CLOS
2178 code more stable against memory faults.
2179 * bug fix: corruption of specials when unbinding is interrupted by an
2180 asynchronous unwind (reported by Hannu Koivisto)
2181 * improvement: the debugger will now also display local variables that
2182 are only used once, for code compiled with a DEBUG optimization quality
2185 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2186 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2187 * incompatible change: External-format support for FFI calls. The
2188 SB-ALIEN:C-STRING no longer implies an ASCII
2189 external-format. Instead the string is subject to external-format
2190 conversion. Additionally return values of type SB-ALIEN:C-STRING
2191 are by default of type (SIMPLE-ARRAY CHARACTER), not
2192 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2193 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2194 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2195 * incompatible change: SB-EXT package no longer contains the
2196 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2197 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2199 * incompatible change: the single-stepper is no longer available
2200 on Alpha, Mips and Sparc platforms.
2201 * minor incompatible change: the direct superclasses of
2202 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2203 not (STANDARD-OBJECT FUNCTION). This makes the
2204 class-precedence-lists of GENERIC-FUNCTION and
2205 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2207 * minor incompatible change: the default stream external format on
2208 non-unicode SBCL is no longer detected from the locale, but is always
2210 * new feature: Add a version of evaluator that uses an interpreter instead
2211 of the compiler. EVAL still uses the compiler by default, to switch it
2212 to use the interpreter, set the value of the variable
2213 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2214 * minor incompatible change: the single-stepper REPL has been merged
2215 with the normal debugger (see the "Stepping" heading of the debugger help
2216 for more details). The debugger command STEP will no longer switch
2217 to the single-stepper REPL.
2218 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2219 for a type now works.
2220 * bug fix: loading of default sysinit file works. (thanks to Leonid
2222 * bug fix: better detection of circularities in the file-compiler.
2223 (reported by Marco Monteiro)
2224 * bug fix: the CL pathname functions now work with files that have
2225 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2226 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2227 systems with Unix98 pty semantics.
2228 * bug fix: ASDF-INSTALL will now work with bsd tar.
2229 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2231 * bug fix: timers expiring in dead threads no longer cause a
2232 type-error (reported by Paul "Nonny Mouse").
2233 * bug fix: thanks to more lightweight single-stepper instrumentation,
2234 code compiled with (DEBUG 3) will compile and execute significantly faster,
2235 and will have more accurate type-inferencing than before
2236 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2237 whose bindings are modified
2238 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2239 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2240 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2241 CL:SOFTWARE-VERSION with proper version
2243 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2244 * feature: implemented the READER-METHOD-CLASS and
2245 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2246 as specified by AMOP.
2247 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2249 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2250 (thanks to Lutz Euler)
2251 * optimization: hashing of general arrays and vectors has been
2252 improved. (reported by Any Fingerhut)
2253 * enhancement: SB-INTROSPECT is now able to find definitions of
2254 profiled functions. (thanks to Troels Henriksen)
2255 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2256 as well, allowing compiler-macros for SETF-functions to expand.
2257 * enhancement: step-instrumentation no longer wraps known
2258 single-value functions with multiple-value context, allowing
2259 better type inference.
2260 * fixed bug #337: use of MAKE-METHOD in method combination now works
2261 even in the presence of user-defined method classes. (reported by
2262 Bruno Haible and Pascal Costanza)
2263 * fixed bug #339(c): if there are applicable methods not part of any
2264 long-form method-combination group, call INVALID-METHOD-ERROR.
2265 (reported by Bruno Haible)
2266 * fixed bug #361: the :FUNCTION initarg in the protocol for
2267 initialization of methods can now be used to override
2268 internally-produced optimized functions. (reported by Bruno
2270 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2271 system-provided lambda expression no longer cause warnings about
2272 unbound #:|pv-table| symbols.
2273 * bug fix: improved the handling of type declarations and the
2274 detection of violations for keyword arguments with non-constant
2276 * bug fix: potentially erronous calls to PATHNAME and
2277 MERGE-PATHNAMES were being flushed in some cases.
2278 (reported by Richard Kreuter)
2279 * bug fix: compiled calls to TYPEP were mishandling obsolete
2280 instances. (reported by James Bielman and Attila Lendvai)
2281 * bug fix: format strings with ~> without matching ~< no longer
2282 trigger an AVER, but signal an understandable error instead.
2283 (reported by Antonio Martinez)
2284 * bug fix: specifying an output-file without a pathname-type for
2285 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2286 of input-file instead of "fasl". (reported by Robert Dodier)
2287 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2288 (reported by James Y Knight).
2289 * bug fix: compiler-macros-function did not consider the environment
2290 argument for shadowing by local functions.
2291 * bug fix: compiler-macros expansion was inhibited by local INLINE
2293 * bug fix: inline expansions of known functions were subject to
2294 step-instrumentation in high debug policies, leading to problems
2295 with type-inference.
2296 * bug fix: compiler failed to differentiate between different CONS
2297 types in some cases.
2298 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2299 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2300 * bug fix: #368: incorrect use of expressed vs. upgraded array
2302 * bug fix: #306a: more precise unions of array types.
2303 * thread-safety improvements:
2304 ** CONDITION-WAIT could return early on Linux, if the thread was
2305 interrupted and subsequently continued with SIGCONT.
2306 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2308 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2309 * added support for the ucs-2 external format. (contributed by Ivan
2311 * minor incompatible change: pretty printing of objects of type
2312 (cons symbol) is, in the default pprint-dispatch-table, now
2313 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2315 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2316 called later in a class's lifetime, possibly as late as when the
2317 first instance of the class is created. Previously,
2318 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2319 class became finalizeable.
2320 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2321 for multibyte external-format streams. (thanks to "vbzoli")
2322 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2323 with :ALLOCATION :CLASS inherited from superclasses of the
2325 * fixed bug: anonymous classes can now be created using the :NAME
2326 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2327 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2328 * fixed bug: core-files saved with :EXECUTABLE T can again be
2329 executed when SBCL_HOME isn't set. (reported by James Knight)
2330 * fixed bug: toplevel LOCALLY forms with declarations could
2331 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2332 * fixed bug: printing from several different threads using different
2333 values of *print-case* could cause invalid output, due to
2334 some internal special variables of the printer not being bound
2335 thread-locally (reported by Max Mikhanosha)
2336 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2337 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2338 (reported by Pascal Costanza)
2339 * fixed bug: FINALIZE-INHERITANCE is called from
2340 REINITIALIZE-INSTANCE on classes when the class has previously
2341 been finalized, as required by AMOP.
2342 * minor code generation optimizations:
2343 ** better register allocation in CLOS dispatching functions
2344 ** overflow detection when coercing signed bytes to fixnums on x86-64
2345 ** is now implemented with one IMUL instruction instead of three shifts
2346 ** more efficient bit-vector access on x86 and x86-64
2347 ** more efficient access to raw structure slots on x86 and x86-64
2348 * fixed some bugs revealed by Paul Dietz' test suite:
2349 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2350 return its argument.
2352 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2353 * feature: thread support on Solaris/x86, and experimental thread support
2355 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2357 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2358 default method for SLOT-UNBOUND.
2359 * minor incompatible change: prevent the user from specializing the
2360 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2361 somewhat counter to the intent of the protocol, I (CSR) think, and
2362 additionally it just doesn't work in SBCL as currently
2363 implemented, thanks to optimizations (that are always valid for
2364 the other three SLOT-VALUEish functions, but not for the setter).
2365 * minor incompatible change: the :SB-LDB feature is now enabled by
2366 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2367 the low-level debugger.
2368 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2369 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2370 down to an SB-SYS:FD-STREAM, allowing direct communication in
2371 more cases. Temporary files and pipes are still used as a fallback
2373 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2374 on the non-reentrant C functions localtime(3) and gmtime(3).
2375 * bug fix: global optimization policy was not visible in LOCALLY and
2377 * bug fix: class objects can be used as specializers in methods.
2378 (reported by Pascal Costanza)
2379 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2380 with a type error. (reported by blitz_ on #lisp)
2381 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2382 failed with a type error. (reported by Pascal Bourguignon)
2383 * bug fix: merging pathnames against defaults with :DIRECTORY
2384 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2385 (reported by James Y Knight)
2386 * bug fix: saving large (>2GB) cores on x86-64 now works
2387 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2388 constant index and a (simple-array (signed-byte 32)) array
2389 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2390 error (patch by Robert J. Macomber)
2391 * feature: TIME now displays the amount of run-time spent in GC
2392 * bug fix: The debugger now does a better job of respecting
2393 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2394 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2395 workaround for bug 403.)
2396 * bug fix: floating point exception handling now works on FreeBSD
2397 (thanks to NIIMI Satoshi)
2398 * fixed some bugs revealed by Paul Dietz' test suite:
2399 ** MISC.641: LET-conversion were not supposed to work in late
2401 * improvements to the Win32/x86 port:
2402 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2403 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2405 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2406 * new feature: source path information is generated for macro-expansion
2407 errors for use in IDE's like Slime (thanks to Helmut Eller)
2408 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2409 * bug fix: compiler does not loop forever on an invalid type in
2411 * improvement: compilation of most CLOS applications is significantly
2413 * optimization: added a limited bytecode compiler for simple toplevel
2414 forms, speeding up compilation and FASL loading
2415 * bug fix: the statistical profiler now properly distinguishes anonymous
2418 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2419 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2420 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2421 into subclasses of the finalized class. Now user calls to
2422 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2423 system return before any subclasses are finalized.
2424 * minor incompatible change: The reader no longer ignores errors
2425 regarding non-existent packages in #+ and #- feature tests.
2426 * new feature: command line options --no-sysinit, --no-userinit to
2427 inhibit loading the corresponding init files
2428 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2429 for sending data through UDP sockets (thanks to François-René Rideau)
2430 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2431 error is signalled instead (thanks to François-René Rideau)
2432 * minor incompatible change: Error signalling behaviour of lexical
2433 operations violating package locks has changed slightly. Refer to
2434 documentation on package locks for details.
2435 * enhancement: EVAL can process IF-expressions without resorting to the
2437 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2438 constant-folded properly due to missing out-of-line functions.
2439 (reported by Mika Pihlajamäki)
2440 * bug fix: LISTEN sometimes returned T even in cases where no data was
2441 immediately available from the stream
2442 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2443 were reversed. (reported by Levente Mészáros)
2444 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2445 when given a vector displaced to an adjustable array. (reported
2447 * bug fix: derivation of float boundaries from numbers outside the
2448 appropriate float range (reported by John Wiseman)
2449 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2451 * bug fix: precomputing cache entries for generic functions with
2452 some subclasses of specializers as yet invalid does not attempt to
2453 fill a cache line with a negative offset. (reported by Levente
2455 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2456 allow condition class objects as arguments to DOCUMENTATION and
2457 (SETF DOCUMENTATION); only find and set documentation for
2458 structure names for the STRUCTURE doc-type. (suggested by Gary
2460 * improvements to the Win32/x86 port:
2461 ** (user-homedir-pathname) and default initialization file
2462 locations now know about the user's "Documents and Settings"
2463 directory (thanks to Yaroslav Kavenchuk)
2464 ** run-program is implemented (thanks to Mike Thomas)
2465 ** sockets support (thanks to Timothy Ritchey)
2466 ** better backtrace support (thanks to Alastair Bridgewater)
2467 ** sb-grovel supported
2468 ** asdf-install and sb-posix work somewhat
2469 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2470 * improvements to the Solaris/x86 port:
2471 ** works on Solaris 11/Solaris Express
2472 ** floating-point exception handling support
2473 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2474 * fixed some bugs revealed by Paul Dietz' test suite:
2475 ** REMOVE-METHOD returns its generic function argument even when
2476 the method is not one of the generic functions' methods.
2477 ** objects declared as MEMBER types can be admissible arguments to
2478 structure accessors.
2479 ** printing characters should simply be printed by the FORMAT ~:C
2481 ** compiler failure when compiling functions with hairy constant
2482 defaults for optional parameters.
2483 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2484 function, which is already optimized.
2486 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2487 * new platform: experimental support for SBCL x86/Darwin, including
2488 MacOS X 10.4.5 on Intel.
2489 * new feature: Unicode character names are now known to the system
2490 (through CHAR-NAME and NAME-CHAR).
2491 * new feature: the filesystem location of SBCL's core file is
2492 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2493 * minor incompatible change: the contrib modules SB-POSIX and
2494 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2495 this change is to make it easier to distribute
2496 location-independent binaries.
2497 * bug fix: as implied by AMOP, standardized classes no longer have
2498 slots named by external symbols of public packages. (reported by
2500 * optimization: calling functions via constant symbols -- as in
2501 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2502 via the function object as in (FUNCALL #'FOO).
2503 * optimization: on x86 and x86-64, the calling convention for the
2504 case of dealing with an unknown number of values has been altered
2505 to be friendlier to the prediction heuristics implemented,
2506 particularly with reference to CALL and RET pairing. (thanks to
2507 Alastair Bridgewater)
2508 * optimization: on x86, the code for access to thread-local symbol
2509 values and binding/unbinding of thread-local symbols is smaller.
2510 (thanks to Alastair Bridgewater)
2511 * enhancement: CONSTANTP is now able to determine constantness of
2512 more complex forms, including calls to constant-foldable standardized
2513 functions and some special forms beyond QUOTE.
2514 * fixed bug: occasional GC crashes on Solaris/x86
2515 * optimization: x86-64 supports stack allocation of results of simple
2516 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2517 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2518 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2519 (thanks to James Knight)
2520 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2521 by the standard (thanks to Stephen Compall)
2523 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2524 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2525 be used for bundling the runtime and the core file into one
2526 executable binary. This feature is not currently supported on all SBCL
2527 platforms. (thanks to James Bielman and NIIMI Satoshi)
2528 * new feature: a generational or ephemeral garbage collector is now
2529 the default on the PowerPC platform (both Linux and Darwin). The
2530 old Cheney (stop and copy) collector is a build-time option.
2531 (thanks to Cyrus Harmon, after Raymond Toy)
2532 * minor incompatible change: the method by which SBCL finds its
2533 contributed modules has changed; it no longer relies on symbolic
2534 links from an $SBCL_HOME/systems directory, but searches directly
2535 in the subdirectories of $SBCL_HOME.
2536 * enhancement: the dynamic heap size on the Linux/PPC platform is
2537 markedly larger, even using the older Cheney garbage collector.
2538 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2539 certain complicated string types. (reported by Gary King)
2540 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2541 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2542 * fixed bug: DOCUMENTATION on structures no longer signals an
2543 error if no structure type of the right name exists. (reported by
2545 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2546 applicable non-standard primary or :AROUND method on
2547 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2548 no longer cause unbound variable errors. (reported by Kevin Reid)
2549 * fixed bug: metacircle resolution in cases where methods have slots
2550 added before the slots from STANDARD-METHOD. (reported by Jean
2552 * fixed bug: the Power PC assembly code for calling into lisp
2553 sometimes computed its return address wrongly (depending on the
2554 15th bit of the address, fixed at link time). This used to
2555 manifest itself in a segmentation violation while building PCL.
2556 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2557 many others over the years)
2558 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2559 the stack pointer (treated as a signed integer) is negative.
2560 (thanks to Peter van Eynde)
2562 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2563 * new platform: experimental support for the Windows operating
2564 system has been added. (thanks to Alastair Bridgewater)
2565 * fixed several bugs in and robustified the PPC FFI (including
2566 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2567 * bug fix: allow non-simple string symbol names (reported by Paul
2569 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2571 * bug fix: saving a core corrupted callbacks on x86/x86-64
2572 * bug fix: closed a loophole in metacircularity detection and
2573 grounding in the PCL implementation of CLOS.
2574 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2575 (reported by tomppa on #lisp)
2576 * bug fix: clear the direction flag on Lisp -> C transitions, as
2577 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2578 (reported by Andrej Grozin and Hendrik Maryns)
2579 * optimization: major improvements to GC efficiency on GENCGC platforms
2580 * optimization: faster implementation of EQUAL
2581 * optimization: emit more efficient opcodes for some common
2582 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2583 * optimization: several other minor code-generation improvements on x86-64
2584 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2586 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2587 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2588 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2589 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2590 by ANSI as a generic function, and for consistency (SETF
2591 GENERIC-FUNCTION-NAME) is treated likewise.
2592 * fixed bug #233.b: make constraint propagation notice when a variable
2593 value is changed after it is referenced but before it is used
2594 * fixed bug #296: no more arbitrary behaviour from filenames with
2595 odd characters as --load arguments. (reported by Adam Warner)
2596 * fixed bug #390: :CHARACTER-SET pathname components now work as
2597 expected. (reported by Tim Daly Jr)
2598 * fixed bug #391: complicated :TYPE intersections in slot
2599 definitions no longer cause an error in PCL internals.
2600 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2601 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2602 returning the number of octets which would be written to the
2603 file-stream. (thanks to Robert J. Macomber)
2604 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2605 arguments to the internal stream functions. (thanks to David
2607 * bug fix: stack exhaustion is now handled on the x86/SunOS
2608 platform. (thanks to Daisuke Homma)
2609 * bug fix: more accurate ROOM results on GENCGC platforms
2610 * optimization: improved type inference for arithmetic-for
2611 index variables in LOOP
2612 * optimization: faster floating-point SQRT on x86-64
2613 * fixed some bugs revealed by Paul Dietz' test suite:
2614 ** DOCUMENTATION returns NIL instead of "" for method combinations
2615 that don't have a docstring
2617 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2618 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2619 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2620 therefore are not customizeable by user code (as seems to be at
2621 least permitted and maybe required by AMOP). As a consolation,
2622 however, the SBCL implementation of these functions now calls
2623 REINITIALIZE-INSTANCE as specified by AMOP.
2624 * bug fix: slot-definition documentation is propagated as per ANSI
2625 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2626 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2627 argument, as do eslotd initialization methods. (from Pascal
2628 Costanza's "Closer" project)
2629 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2630 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2632 * bug fix: it is now possible to have more than one subclass of
2633 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2634 (reported by Bruno Haible, Pascal Costanza and others)
2635 * bug fix: the dependent update protocol now works for generic
2636 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2637 and Pascal Costanza)
2638 * bug fix: condition-class instances corresponding to
2639 DEFINE-CONDITION forms are now created eagerly. (reported by
2640 Kalle Olavi Niemitalo on comp.lang.lisp)
2641 * bug fix: floating point printing is more accurate in some
2642 circumstances. (thanks to Simon Alexander)
2643 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2644 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2645 * bug fix: callbacks on OS X now preserve stack-alignment.
2646 (thanks to Cyrus Harmon)
2647 * enhancement: the x86-64 disassembler is much better at
2648 disassembling SSE instructions. (thanks to Lutz Euler)
2649 * enhancement: CHECK-TYPE on a variable now allows type-inference
2650 (thanks to Vincent Arkesteijn)
2651 * optimization: improved performance of EUC-JP external format.
2652 (thanks to NIIMI Satoshi)
2653 * optimization: performance improvements to IO on file streams of
2654 :ELEMENT-TYPE CHARACTER
2655 * optimization: much faster memory allocation on x86-64
2656 * optimization: faster garbage collections (latency and throughput)
2658 * optimization: faster bignum subtraction and division on x86 and x86-64
2659 (thanks to Lutz Euler)
2660 * optimization: more accurate type-inference for loops that use a
2661 floating point index variable or a negative step.
2663 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2664 * bug fix: add a workaround to SBCL looping infinitely at startup on
2665 Linux kernels with apparently buggy implementations of personality().
2666 (thanks to Svein Ove Aas)
2667 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2668 (thanks to David Lichteblau)
2669 * bug fix: local bindings shadow global symbol macros for
2670 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2671 * optimization: non-open coded uses of numeric comparison operators
2672 (e.g. >) no longer cons when called with more than one parameter
2673 on platforms supporting dynamic-extent allocation.
2674 * enhancement: saving cores with foreign code loaded is now supported
2675 on MIPS/Linux in addition to the previously supported platforms.
2676 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2677 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2678 * bug fix: division by zero in sb-sprof when no samples were collected
2679 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2680 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2681 (thanks to Alexander Kjeldaas)
2682 * new feature: ignoring the return values of destructive functions
2683 like NREVERSE signals a compile-time style-warning.
2684 (thanks to Kevin Reid)
2685 * new feature: the alignment of alien structure fields can be
2686 explicitly specified. (thanks to Cyrus Harmon)
2687 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2688 and dump core on SIGQUIT
2690 ** incompatible change: threads do not inherit values of specials
2691 from their parents (see manual)
2692 ** bug fix: threads stacks belonging to dead threads are freed by the
2693 next exiting thread, no need to gc to collect thread stacks anymore
2694 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2695 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2696 ** bug fix: dynamic variable and thread start related gc lossage
2697 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2699 * fixed some bugs revealed by Paul Dietz' test suite:
2700 ** SUBTYPEP is slightly more accurate on heinously complicated
2701 CONS types where some of the members have uncertain (in the
2702 NIL, NIL sense) type relationships to each other.
2704 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2705 no longer purified unless :PURIFY T is explicitly specified.
2706 ** Non-purified cores are significantly smaller than before
2708 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2709 * new feature: timers based on Zach Beane's excellent timer package
2710 * added support for the following external formats: koi8-u,
2711 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2712 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2713 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2714 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2715 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2716 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2717 * incompatible change: a threaded SBCL will no longer revert to
2718 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2719 * bug fix: interrupts are disabled until startup is complete; no
2720 more sigsegvs when receiving a signal to soon
2721 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2723 * bug fix: add a workaround for the memory randomization features in
2724 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2725 workaround will only be in effect on systems with the proc filesystem
2727 * bug fix: printing objects of type HASH-TABLE signals a
2728 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2730 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2731 have been running for over 50 days. (reported by Gilbert Baumann)
2732 * bug fix: the logic for getting names of functions gets less
2733 confused when confronded with alternate-metaclass
2734 funcallable-instances. (reported by Cyrus Harmon)
2735 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2736 consistent, even on internal alternate-metaclass objects.
2737 * bug fix: flush closure information collected by physical
2738 environment analysis prepass before the main pass. (bug reported
2740 * bug fix: compiler pack phase does not modify a hashtable, which is
2741 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2742 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2743 may be expanded. (reported by Alexander <malishev> on c.l.l)
2744 * bug fix: no more style-warnings when compiling code using LAST
2745 under high-SPEED low-SPACE settings. (reported by David Wallin
2747 * fixed some incompatibilities between SBCL's MOP and the MOP
2749 ** the METAOBJECT class is now implemented;
2750 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2751 STANDARD-OBJECT, as required;
2752 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2753 now compatible (as required by VALIDATE-SUPERCLASS); there
2754 remains a consistency requirement over the presence or absence
2755 of the FUNCTION class in the superclass list of finalized
2756 classes; see the manual for more details;
2757 ** the :AROUND method for COMPUTE-SLOTS on
2758 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2759 requested slot ordering.
2761 ** bug fix: parent thread now can be gc'ed even with a live
2763 ** bug fix: binding a special with PROGV to no value is not
2764 the same as that symbol not having been bound (thanks to
2766 ** bug fix: binding specials is thread safe (thanks to
2768 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2769 and SB-SPROF do not die with 'no handler for signal XX in
2770 interrupt_handle_now(..)' anymore
2771 ** bug fix: WITH-TIMEOUT works with multiple running threads
2772 * fixed some bugs revealed by Paul Dietz' test suite:
2773 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2774 the :method-class keyword argument.
2776 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2777 * new port: the Solaris operating system on x86 processors is now
2778 mostly supported, though some rough edges in the environment
2779 remain. (thanks to Daisuke Homma)
2780 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2781 space for its heap. (thanks to Thiemo Seufer)
2782 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2783 closures. (thanks to Thiemo Seufer)
2784 * minor incompatible change: eof selects abort in the debugger.
2785 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2786 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2788 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2789 deprecated, and will go away in a future revision of SBCL.
2790 * minor incompatible change: GC-ON and GC-OFF are no longer
2791 implemented with a counter, it does not matter how many times gc
2792 is switched on or off
2793 * bug fix: discriminating functions for generic function classes
2794 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2795 make invalid assumptions about method precedence order. (reported
2797 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2798 platforms. (thanks to Thiemo Seufer)
2799 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2800 * bug fix: correct pathname printing with printer escaping is on.
2801 (thanks to Kevin Reid)
2802 * bug fix: complex VOP definitions in "user-space" no longer trigger
2803 package locks. (reported by Zach Beane)
2804 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2805 for funcallable-instance functions, and is no different from
2807 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2808 characters in the current readtable. (reported by Nicholas Neuss)
2809 * bug fix: SUBTYPEP on various CONS types returns more a more
2810 accurate acknowledgment of its certainty.
2811 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2812 lists in some cases. This partially fixes bug 384.
2813 * flush all standard streams before prompting in the REPL and the
2815 * bug fix: signal handling and triggering gc do not conflict
2816 directly anymore, in particular a high frequency sb-sprof does
2817 not prevent gc from running
2818 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2819 approximation for timezone and DST information between the
2820 universal time epoch and the smallest negative 32-bit time_t.
2821 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2822 year 1899 so long as the encoded time is non-negative.
2823 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2824 the correct answer for non-constant rotate amounts when performing
2825 an inline 32-bit rotation.
2827 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2828 there is only one thread in the session
2829 ** bug fix: memory leak for streams created in one thread and
2830 written to in another
2831 ** bug fix: lockup when compiled with gcc4
2832 ** bug fix: race that allows the gc to be triggered when gc is
2834 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2835 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2837 ** bug fix: finished threads are gc'ed properly
2838 * fixed some bugs revealed by Paul Dietz' test suite:
2839 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2840 has arguments with a different set of applicable methods from
2841 the orignal arguments.
2842 ** The type error thrown by MAP now has a correct expected-type
2844 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2845 name a compiled function.
2846 ** Three MISC tests where a large bignum was improperly coerced to
2847 a float that couldn't represent that bignum during type
2848 derivation were fixed.
2849 ** SUBTYPEP can now handle types involving the negation of a
2850 list-form FUNCTION type.
2851 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2852 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2853 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2855 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2856 * New feature: Experimental support for bivalent streams: streams
2857 opened with :element-type :default now allow character and binary
2858 (unsigned-byte 8) I/O
2859 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2860 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2862 * bug fix: no more highly sporadic "couldn't check whether ~S is
2863 readable" when reading a stream and an interrupt hits in the middle
2864 of a select system call
2865 * compiler better recognizes complex arrays (reported by Eduardo
2867 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2868 for variables on SBCL built with linkage-tables. (reported by Luis
2870 * various error reporting improvements.
2871 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2872 (Thanks to Thiemo Seufer)
2873 * bug fix: nested reader invokations work correctly
2874 * bug fix: it is possible to have simultaneous references to foreign
2875 code and foreign data with the same name.
2877 ** added x86-64 support
2878 ** incompatible change: the threading api now works with thread
2879 objects instead of thread ids
2880 ** bug fix: threads are protected from signals and interruption when
2881 starting up or going down
2882 ** bug fix: a race where an exiting thread could lose its stack to gc
2883 ** bug fix: don't halt on infinite error in threads if possible
2884 ** fixed numerous gc deadlocks introduced in the pthread merge
2885 ** bug fix: fixed thread safety issues in read and print
2886 ** bug fix: debugger doesn't hang on session lock if interrupted at
2887 an inappropriate moment
2888 ** bug fix: run-program is now thread safe(r)
2889 ** bug fix: inner with-recursive-lock no longer releases the mutex
2890 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2891 * fixed some bugs revealed by Paul Dietz' test suite:
2892 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2893 EXPECTED-TYPE slots filled.
2894 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2896 ** MAKE-CONDITION accepts classes as type-designators.
2897 ** COMPILE may never return NIL.
2898 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2899 range before calling Unix time functions
2901 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2902 * numerous signal handling fixes to increase stability
2903 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2904 * minor incompatible change: we now correctly canonize default
2905 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2906 as per the MOP, rather than the historical (INITARG INITFUNCTION
2907 INITFORM). (reported by Bruno Haible)
2908 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2909 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2910 for more information.
2911 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2912 pathname is a directory pathname.
2913 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2914 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2916 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2917 :METACLASS argument in addition to a class name. (reported by
2918 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2919 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2920 (reported by Bruno Haible; patch from Gerd Moellmann)
2921 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2923 * bug fix: more cleanups to the floating point exception handling on
2924 x86-64 (thanks to James Knight)
2925 * bug fix: the compiler does not try to constant fold calls of
2926 COERCE and BIT-* functions when they return freshly constructed
2927 objects. (reported by Nikodemus Siivola and Paul Dietz)
2928 * optimization: improved the MIPS versions of generic (in the
2929 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2930 * optimization: direct conversion of (unsigned-byte 32) to floats on
2931 the PowerPC platform.
2932 * optimization: structure instances with raw slots now use less
2933 memory, and probably show better memory locality. (thanks to
2935 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2936 are treated as requests for stack allocation on the x86-64,
2937 Alpha-32, PPC and SPARC platforms.
2938 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2939 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2940 (thanks to Tony Martinez)
2942 ** gcing a dead thread can no longer lead to lockups
2943 ** threads block signals until they are set up properly
2944 ** errno is no longer shared by threads
2945 ** interrupt-thread restores the eflags register on x86
2946 ** fixed some lockups due to gc/thread interaction
2947 * fixed some bugs revealed by Paul Dietz' test suite:
2948 ** invalid dotted lists no longer raise a read error when
2949 *READ-SUPPRESS* is T
2950 ** signal an error if a symbol that names a declaration is used
2951 as the name of a type, or vice versa
2952 ** allow using the (declare (typespec var*)) abbreviation for
2953 (declare (type typespec var*)) with all type specifiers
2954 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2955 ** always return NIL from PPRINT-POP when OBJECT is NIL
2956 ** don't signal errors when pretty-printing malformed LABELS,
2957 FLET or MACROLET forms
2958 ** declarations in a DOLIST body are also in scope for the
2960 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2962 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2965 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2966 * fixed cross-compiler leakages that prevented building a 32-bit
2967 target with a 64-bit host compiler.
2968 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2969 opened with :IF-EXISTS :OVERWRITE.
2970 * fixed bug 281: error for an invalid qualifier in a short-form method
2971 combination method is not signalled until the faulty method is called.
2972 * bug fix: iteration variable type inferrer failed to deal with open
2973 intervals. (reported by Alan Shields)
2974 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2975 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2976 or more runtime options were provided to the sbcl binary.
2977 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2978 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2979 * optimization: there's now a fast-path for fixnum arguments in the
2980 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2981 * optimization: the code generated on x86-64 is more compact thanks
2982 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2983 * bug fix: floating-point exception handling now partly works on
2984 x86-64. (Thanks to James Knight)
2985 * improvement to the MIPS backend from Thiemo Seufer: C-style
2986 64-bit long long arguments and return values to alien functions
2988 * fixed some bugs revealed by Paul Dietz' test suite:
2989 ** the type-error signalled from WARN has a filled-in DATUM slot.
2990 ** the type-error required when a stream is not associated with
2991 a file has the stream as its datum.
2992 ** type-errors on single-floats on x86-64 no longer have
2993 :INVALID-OBJECT as the datum
2994 ** the type-errors signalled for invalid function names now have
2995 a correct expected type
2996 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2997 for structures defined with a :TYPE. Documentation strings for
2998 typed structures are no longer immediately discarded
2999 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3000 broadcast streams and synonym streams. FILE-LENGTH now also works
3001 on broadcast streams.
3003 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3004 * incompatible change: the --noprogrammer option, deprecated since
3005 version 0.7.5, has been removed. Please use the equivalent
3006 --disable-debugger option instead.
3007 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3009 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3010 inoperational for a while now) has been completely removed.
3011 * null lexical environments are now printed as #<NULL-LEXENV>,
3012 significantly reducing the amount of clutter in typical backtraces.
3013 * documentation on weak pointers, finalization, and after GC hooks
3014 has been added to the manual.
3015 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3016 as other specialized array types, is much faster. SUBSEQ and
3017 COPY-SEQ on such arrays have also been sped up.
3018 * optimization: EQL is now more efficient when at least other argument
3019 is known to be of type (OR FIXNUM (NOT NUMBER)).
3020 * fixed bug: the runtime is now less vulnerable to changes in the
3021 size of the SBCL object on OS X, and virtual memory is reserved for
3022 all spaces that need to be at a fixed address.
3023 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3024 * fixed bug: finalizers and after GC hooks that cause consing are now
3026 * fixed bug: compiler error messages and summaries are now printed to
3027 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3028 * fixed inference of the upper bound of an iteration variable.
3029 (reported by Rajat Datta).
3030 * fixed bug 211e: calling local functions with duplicated constant
3031 keyword argument no longer causes a bogus style warning about an
3033 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3034 ftype declaration to be disregarded. (reported by Dave Roberts)
3035 * fixed bug 373: caused by erronous compilation of references to alien
3036 variables in the runtime on ppc/darwin.
3037 * fixed bug 376: CONJUGATE type deriver.
3038 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3039 (reported by Baughn on #lisp)
3040 * a cross-compiler bug on non-x86 platforms has been identified and
3041 fixed. (thanks to Bruno Haible)
3042 * improvements to the MIPS runtime code for increased stability.
3043 (thanks to Thiemo Seufer)
3044 * increased the maximimum compact environment size to allow
3045 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3046 * partial workaround for bug 135: don't name the function we're
3047 calling for hairy cases of EVAL, so as not to accumulate one environment
3048 entry per call to EVAL. (reported by Kevin Reid)
3049 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3050 * optimization: type testing for non-vector arrays should be faster.
3051 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3053 * bug fix: setting 31st element of a bit vector to zero did not work
3055 * bug fix: redefining a class definition which failed due to a
3056 previous accessor / function clash now works (but see BUGS entry
3057 #380 for more problems in this area). (thanks to Zach Beane)
3058 * the long form of DEFINE-METHOD-COMBINATION disables method group
3059 checking when given a single method group with pattern *. (thanks
3061 * on x86 compiler supports stack allocation of results of simple
3062 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3063 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3064 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3065 * fixed some bugs related to Unicode integration:
3066 ** the restarts for recovering from input and output encoding
3067 errors only appear when there is in fact such an error to
3069 * fixed some bugs revealed by Paul Dietz' test suite:
3070 ** MISC.549 and similar: late transformation of unsafe type
3071 assertions into derived types caused unexpected code
3073 ** SCALE-FLOAT type deriver is less wrong.
3074 ** type derivers for EXP, LOG and similar functions compute result
3075 types for complex arguments better.
3076 ** (MISC.563) CONJUGATE type deriver works for very restricted
3078 ** out-of-line type testers for character strings are available.
3079 ** EQUAL compiler transform understands specialness of objects
3081 ** accessing double-floats stored on the stack now works on x86-64.
3082 ** debugger internals could sometimes create invalid lispobjs,
3083 resulting in GC crashes.
3084 ** MISC.548: type check weakening can convert required type into
3086 ** initialization forms for bindings are not in scope of free special
3089 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3090 * incompatible change: thread support for non-NPTL systems has
3091 been removed - locking is buggy and unreliable. A threaded
3092 SBCL build will now warn at startup and refuse to create
3093 new threads, unless futex support is detected in the kernel
3094 * incompatible change: the top level REPL now has only an ABORT
3095 restart associated with it, not TOPLEVEL and ABORT as it used to.
3096 TOP and TOPLEVEL are now available as debugger commands for
3097 returning to the top level.
3098 * incompatible change: forms evaluated in the REPL now use the
3099 global optimization policy.
3100 * incompatible change: user- and system-initialization files are
3101 no longer processed with LOAD, but by READ and EVAL; hence the
3102 global optimization policy, startup package, readtable, etc,
3104 * The .fasl file format number has been incremented because of
3105 various incompatible changes.
3106 * internal entry point details and argument counts no longer appear
3107 in backtraces unless explicitly requested by setting
3108 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3109 * built-in and standard functions no longer have names like "top
3110 level local call to FOO".
3111 * fixed bug 32: functions defined in non-null lexical environments
3112 now have more legible printed representation
3113 * fixed bug 33: functions defined in non-null lexical environemnts
3114 are now more amenable to inspection by INSPECT.
3115 * workaround for bug 354: XEPs no longer appear in backtraces unless
3116 explicitly requested.
3117 * fixed bug: receiving the signal which results from attempting to
3118 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3119 SIGBUS on other *BSDs) on architectures where the C stack is also
3120 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3121 to debugger confusion or wild instability. (reported by Cheuksan
3123 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3124 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3125 (reported by Lutz Euler)
3126 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3127 compiled code. (reported by Paul Dietz)
3128 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3129 specialized parameter to a method to something that is not TYPEP
3130 the specializer is now possible.
3131 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3132 face of package deletion.
3133 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3134 pathname. (reported by David Tolpin on c.l.l)
3135 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3136 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3137 STRING-STREAM and FILE-STREAM, respectively.
3138 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3139 than previously; in addition, its test suite is now run on build.
3140 (thanks to Luke Gorrie)
3141 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3142 * optimization: added a immediate representation for single-floats
3144 * fixed some bugs revealed by Paul Dietz' test suite:
3145 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3146 ** attempting to create a package with a colliding nickname causes
3147 correctable errors to be signalled.
3148 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3149 ** several x86-64 backend bugs related to sign-extension of immediate
3152 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3153 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3154 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3156 * fixed loading of multiply forward-referenced layouts.
3157 (thanks to Cheuksan Wang)
3158 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3159 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3160 (see COMPILE-FILE documentation for details of :PRINT option)
3161 * fixed bugs 19 and 317: fixed-format floating point printing is
3162 more accurate. This also fixes a bug reported by Adam Warner
3163 related to the ~@F format directive.
3164 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3166 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3167 dispatch table if the from-char is a dispatch macro character.
3168 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3169 by the wordsize no longer ignore the last word. (reported by Lutz
3171 * fixed bug in type checking of dynamic-extent variables. (reported
3173 * optimization: sequence traversal functions use their freedom to
3174 coerce function designators to functions.
3175 * optimization: code with many calls to CLOS methods specialized on
3176 CLOS classes has had redundant type checks removed.
3177 * optimization: added declarations to speed up operations that access
3178 the internal character database (for example STRING-UPCASE)
3179 * optimization: comparison operations between floats and sufficiently small
3180 fixnums no longer create extra rationals
3181 * fixed some bugs related to Unicode integration:
3182 ** portions of multibyte characters at the end of buffers for
3183 character-based file input are correctly transferred to the
3184 start of the buffer at the next read.
3185 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3186 passing it through to OPEN.
3187 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3188 argument given to internal calls to OPEN.
3189 ** the built-in comment readers (introduced by character sequences
3190 ";" and "#|") are more forgiving to encoding errors; they will
3191 STYLE-WARN and then attempt to resync the stream at a character
3192 boundary. (thanks to Teemu Kalvas)
3193 * fixed some bugs in the x86-64 port:
3194 ** Negative short int return values from c-calls are sign-extended
3196 ** The stack is aligned to 16-bytes for c-calls, as required by
3197 the ABI. (thanks to Cheuksan Wang)
3198 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3199 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3200 for enums. (thanks to Vincent Arkesteijn)
3201 ** Multiple small optimizations and bugfixes for floating point
3203 * fixed some bugs revealed by Paul Dietz' test suite:
3204 ** Space, Tab, Linefeed, Return and Page have the invalid
3205 secondary constituent character trait.
3206 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3208 ** WITH-INPUT-FROM-STRING should only update the index place on
3210 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3211 works more reliably.
3212 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3213 with one-dimensional arrays with fill pointers.
3214 ** TYPE-OF failed on a complex with an integer realpart and a
3216 ** compiler failure during type inference for the code of form
3217 (IF (EQL X (THE ...)) ...) (MISC.535).
3219 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3220 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3221 platform. The port supports 61-bit fixnums, large memory spaces
3222 and reloading shared object files.
3223 * enhancement: saving cores with foreign code loaded is now
3224 supported on ppc/Darwin in addition to the previously supported
3226 * enhancement: the statistical profiler now walks deeper into the
3227 call stack for more meaningful call-graphs and accrued time
3228 reports (x86/x86-64 only). It also now reports time spent in
3230 * enhancement: it is now possible to trace most individual methods
3231 of a generic function in addition to tracing the generic function
3233 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3235 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3236 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3237 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3238 produces an error. (thanks to Vincent Arkesteijn)
3239 * bug fix: NAMESTRING on pathnames with :WILD components in their
3240 directories works correctly. (thanks to Artem V. Andreev)
3241 * fixed bug 125: compiler preserves identity of closures. (reported
3243 * bug fixed: functions with &REST arguments sometimes failed with
3244 "Undefined function" when compiled with (DEBUG 3). (reported by
3246 * bug fix: overflow during compiling of setting element of a bit
3247 vector with constant index and value. (reported by Timmy Douglas)
3248 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3249 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3250 * on x86 compiler partially supports stack allocation of dynamic-extent
3252 * GO and RETURN-FROM do not check the extent of their exit points
3253 when compiled with SAFETY 0.
3254 * fixed some bugs related to Unicode integration:
3255 ** encoding and decoding errors are now much more robustly
3256 handled; it should now be possible to recover even from invalid
3257 input or output to the terminal. (thanks to Teemu Kalvas)
3258 ** provided a first cut at implementing STRING-TO-OCTETS and
3259 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3260 ** altered the SB-MD5 contributed module slightly, changing the
3261 interface just enough for it to be supportable for builds where
3262 lisp characters are not eight bits.
3263 * fixed some bugs revealed by Paul Dietz' test suite:
3264 ** the FORMATTER-generated functions for ~V[ conditionals require
3265 the correct number of arguments.
3266 ** READ-FROM-STRING returns the mandated second value when applied
3267 to displaced strings.
3268 ** the #\Rubout and #\Backspace characters are treated as invalid
3269 constituent characters by the tokenizer.
3271 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3272 * new feature: reloading changed shared object files with
3273 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3274 * new feature: references to foreign variables and functions
3275 can now be compiled and loaded before the corresponding shared
3276 object file is loaded, as long as the foreign definitions are
3277 available at runtime.
3278 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3279 supported. (thanks to Dan Debertin)
3280 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3281 just keywords. (thanks to Vincent Arkesteijn)
3282 * fixed bug #331: structure-class instances corresponding to
3283 DEFSTRUCT forms are now created eagerly.
3284 * fixed bug #345: backtraces from calls to undefined functions work
3285 on x86 as well. Related bug #61 is now also partially fixed on x86
3286 (backtraces from throws to unknown catch tags.)
3287 * bug fix: lambda-list parsing is now stricter vrt. order and number
3288 of lambda-list keywords.
3289 * bug fix: as specified by AMOP, an error is signalled if a
3290 class-option appears multiple times in a DEFCLASS form. (reported
3292 * bug fix: RANDOM can be compiled when the compiler derives the type
3293 of its numeric argument as a disjoint set of small integers.
3294 (reported by Paul Dietz)
3295 * bug fix: starting a core saved with shared objects loaded when
3296 those objects are not available no longer causes threaded SBCL to
3297 hang. (reported by Sean Ross)
3298 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3300 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3301 argument, which must always be NIL. (reported by Kalle Niemitalo)
3302 * bug fix: printing 1.0d+23 no longer results in an error.
3303 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3304 * bug fix: structure slot setters preserve evaluation order. (thanks
3306 * fixed some bugs related to Unicode integration:
3307 ** RUN-PROGRAM can allow its child to take input from a Lisp
3308 stream. (reported by Stefan Scholl)
3309 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3310 locales. (reported by Ken Causey)
3311 * fixed some bugs revealed by Paul Dietz' test suite:
3312 ** INCF, DECF and REMF evaluate their place form as specified in
3314 ** FORMATTER expands ~{ ~} iteration directives with V or #
3315 parameters correctly.
3316 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3317 consequent uses no arguments correctly.
3318 ** the system has a partial understanding of the (COMPLEX RATIO)
3320 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3323 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3324 * new feature: a build-time option (controlled by the :SB-UNICODE
3325 keyword feature, enabled by default) for building the system with
3326 support for the entire 21-bit character space defined by the
3328 * new feature: the system now has rudimentary external-format
3329 support; the primary user-visible change at this time is that
3330 characters with the high bit set (such as lower-case-e-acute) will
3331 print correctly to a terminal in a UTF-8 environment.
3332 * minor incompatible change: BASE-CHAR no longer names a class;
3333 however, CHARACTER continues to do so, as required by ANSI.
3334 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3335 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3336 has been moved to the SB-EXT package (temporarily re-exported from
3338 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3339 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3341 * fixed bug #351: better error-handlind and reporting for malformed
3343 * fixed bug #350: bignum-printing is now more memory-efficient,
3344 allowing printing of very large bignums, eg. (expt 2 10000000).
3345 (reported by Bruno Haible)
3346 * fixed bug #302: better primitive-type selection for intersection
3348 * fixed bug #308: non-graphic characters now all have names, as
3349 required. (reported by Bruno Haible)
3350 * bug fix: redefining a class with different superclasses now correctly
3351 removes it from the direct-subclasses of its previous superclasses.
3352 (reported by David Morse)
3353 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3354 new value now works. (reported by Bruno Haible)
3355 * bug fix: correct canonicalization of multiple non-standard slot
3356 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3357 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3358 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3359 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3360 now exists, an signals an error.
3361 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3362 during macroexpansion for non-iteration variables as well. (reported
3363 by Bruno Haible for CMUCL)
3364 * bug fix: Cyclic structures and unprintable objects in compiler
3365 messages no longer cause errors. (reported by Bruno Haible)
3366 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3367 and READ-FROM-STRING all now return a primary value of NIL if
3368 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3369 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3370 (reported by Bruno Haible for CMUCL)
3371 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3372 do not designate a condition. (reported by Bruno Haible for
3374 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3375 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3376 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3377 permitting resolution in favour of any of the conflicting symbols.
3378 (reported by Bruno Haible for CMUCL)
3379 * bug fix: EQUAL compiler optimizations is less aggressive on
3380 strings which can potentially compare true despite having distinct
3381 specialized array element types.
3382 * bug fix: unit enumerations can be defined without dividing by
3383 zero. (thanks to Vincent Arkesteijn)
3384 * FORMAT compile-time argument count checking has been enhanced.
3385 (report from Bruno Haible for CMUCL)
3386 * a partial workaround for the bug 262: the compiler does not try to
3387 inline-expand a local function doing RETURN-FROM from a deleted
3388 BLOCK. (thanks to Peter Denno for the bug report and to David
3389 Wragg for the simple test case)
3390 * fixed some bugs revealed by Paul Dietz' test suite:
3391 ** RENAME-PACKAGE allows all package designators as new package
3393 ** constraint propagation and lambda variable substitution are
3394 more cautious in dealing with partially deleted code.
3395 ** compiler sometimes lost reoptimization passes.
3396 ** CERROR, given a condition as condition designator, passes its
3397 remaining arguments to the continue format control without
3399 ** Case-altering FORMAT directives work correctly on non-ASCII
3401 ** The REAL type specifier handles bounds outside the floating
3402 point ranges without signalling FLOATING-POINT-OVERFLOW.
3403 ** Functions with IR1-transformations can create intercomponent
3404 references to global functions.
3405 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3407 ** FORMAT ~R treats a nil value for its first parameter correctly.
3409 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3410 * enhancement: saving cores with foreign code loaded is now
3411 supported on x86/NetBSD and sparc/Linux in addition to the previously
3412 supported platforms.
3413 * bug fix: on some platforms repeated installations caused multiple
3414 copies of HTML documentation to be installed -- should not happen
3415 any more. (reported by Stefan Scholl)
3416 * bug fix: parsing self-recursive alien record types multiple times
3417 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3418 original patch by Helmut Eller for CMUCL)
3419 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3420 (thanks to Richard Kreuter)
3421 * bug fix: defining classes whose accessors are methods on existing
3422 generic functions in other (locked) packages no longer signals
3423 bogus package lock violations. (reported by François-René Rideau)
3424 * bug fix: special variables as DEFMETHOD parameters no longer have
3425 associated bogus type declarations. (reported by David Wragg and
3427 * bug fix: read-write consistency on streams of element-type
3428 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3429 * bug fix: redefiniton of the only method of a generic function with
3430 no DEFGENERIC no longer emits a full WARNING. In addition,
3431 redefinition of generic functions with no DEFGENERIC to an
3432 incompatible lambda list now signals an error. (thanks to Zach
3434 * bug fix: DEFGENERIC now works even when there's a function of the
3435 same name in an enclosing lexical environment. (thanks to Zach
3437 * fixed compiler failure, caused by instrumenting code during
3438 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3439 * optimization: added loop analysis and improved register allocation
3440 * fixed some bugs revealed by Paul Dietz' test suite:
3441 ** POSITION on displaced vectors with non-zero displacement
3442 returns the right answer.
3443 ** (SIMPLE-STRING) is a valid type specifier for sequence
3445 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3447 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3448 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3450 ** The justification version of the FORMAT ~< directive treats
3451 non-zero minpad parameter correctly.
3453 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3454 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3455 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3456 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3457 the supported interface.
3458 * new feature: Single-stepping of code compiled with DEBUG 2 or
3459 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3460 * new feature: saving cores with foreign code loaded is now
3461 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3462 Timothy Moore's work for CMUCL)
3463 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3464 parameters to * instead of NIL if no initform is supplied.
3465 (reported by Johan Bockgaard)
3466 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3467 correctly when FUNCALL appears as the car of the form. Note:
3468 despite this FUNCALL forms are not currently subject to
3469 compiler-macro expansion. (port of Raymond Toy's fix for the
3470 same from CMUCL, reported by Johan Bockgaard)
3471 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3472 (thanks for Teemu Kalvas)
3473 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3474 case instead of terminating the iteration (thanks for Julian
3475 Squires, Sean Champ and Raymond Toy)
3476 * bug fix: incorrect expansion of defgeneric that caused a style
3477 warning. (thanks for Zach Beane)
3478 * bug fix: slot accessor effective method computation works properly
3479 for classes with multiple non-standard applicable methods on
3480 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3481 * on x86 compiler supports stack allocation of results of LIST and
3482 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3483 CMUCL implementation by Gerd Moellmann)
3484 * fixed some bugs revealed by Paul Dietz' test suite:
3485 ** FORMAT strings with both the ~<~:;~> form of the justification
3486 directive and pretty-printing directives cause an error.
3488 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3489 * incompatible change: the internal functions
3490 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3491 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3492 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3493 instead of the old functions.
3494 * new feature: on platforms where "dladdr" is available foreign
3495 function names now appear in backtraces. (based on Helmut Eller's
3497 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3498 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3500 * documentation: ASDF manual is now distributed with SBCL.
3501 * bug fix: SBCL can now load its contributed modules with REQUIRE
3502 even if the system-provided entries have been removed from
3503 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3505 * bug fix: backtraces involving undefined functions or assembly
3506 routines are more informative. (thanks to Brian Downing)
3507 * bug fix: mutually referent alien structures now work correctly.
3508 (reported by Rick Taube)
3509 * bug fix: structures defined by WITH-ALIEN can be referred to
3510 within other definitions in the same WITH-ALIEN.
3511 * bug fix: division operators (MOD, TRUNCATE and the like) with
3512 constant zero divisors and integer dividends no longer generate
3514 * bug fix: provide default methods for INPUT-STREAM-P and
3515 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3516 * bug fix: improve the detection and resolution of MOP metacycles
3517 (where effective method computation depends on the generic function
3518 having its effective method computed). (reported by Bruno Haible)
3519 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3520 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3521 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3522 * bug fix: pathnames with relative directory components can be
3523 represented relative to default pathnames.
3524 * optimization: in taking the GCD of bignums, reduce the two bignums
3525 to approximately the same size (using Euclid's algorithm) before
3526 applying the more sophisticated binary GCD. (thanks to Juho
3528 * optimization: COUNT on bitvectors now operates word-at-a-time.
3529 * optimization: ASH with a positive, but not necessarily constant,
3530 (leftwards) shift, when in a modular context, is compiled to a
3532 * fixed some bugs revealed by Paul Dietz' test suite:
3533 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3534 if the corresponding argument is NIL.
3535 ** FORMAT directives accepting a minpad parameter treat negative
3537 ** literal commas as character parameters to FORMAT directives are
3539 ** literal spaces directly after ~<Newline> directives within a
3540 format-logical-block (~:< ~@:>) do not induce :FILL-style
3541 conditional newlines.
3542 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3543 as specified: it no longer includes conditional newlines).
3544 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3546 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3547 :PER-LINE-PREFIX argument does not evaluate to a string.
3549 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3550 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3551 the manual for details; for now, package locks can be disabled by
3552 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3553 if no major problems are found then it is likely that they will be
3554 compiled in unconditionally.
3555 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3556 unsupported operators on all platforms. To load a shared library
3557 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3558 object file, link it into a shared library outside of SBCL and
3559 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3561 * bug workaround: ROOM T and the GC were not working together
3562 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3563 reporting facility aren't preserved. That reporting has been
3564 disabled, so now until and unless someone figures out how to make it
3565 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3566 * minor incompatible change: as threatened around sbcl-0.8.0, the
3567 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3568 The symbols are also exported from SB-PCL for backwards
3569 compatibility, but more so than before SB-PCL should be treated as
3570 an implementation-internal package.
3571 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3573 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3574 It is known as of this release not to work on the Alpha, however.
3575 * fixed bug #167: errors signalled due to illegal syntax in method
3576 bodies are now more legible.
3577 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3578 designators and can hence be used with TYPEP.
3579 * fixed bug #333: CHECK-TYPE now ensures that the type error
3580 signalled, if any, has the right object to be accessed by
3581 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3582 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3583 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3585 * fixed bug #334: programmatic addition of slots using specialized
3586 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3587 and :ALLOCATION :CLASS slots.
3588 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3589 float exponents. (rereported by Peter Seibel)
3590 * fixed a bug: #\Space (and other whitespace characters) are no
3591 longer considered to be macro characters in standard syntax by
3592 GET-MACRO-CHARACTER.
3593 * fixed bug: initialization of condition class metaobjects no longer
3594 causes an instance of the condition to be created. (reported by
3596 * fixed bug: it is now possible to have slots such that
3597 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3598 description is neither :INSTANCE nor :CLASS.
3599 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3600 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3601 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3602 non-standard SLOT-DEFINITION-ALLOCATION values.
3603 * fixed bugs: various race conditions handling exiting threads.
3604 CL-PPCRE's thread torture test now passes.
3605 * fixed arguably-a-bug: GC time proportional to number of threads in
3606 system even when most of them are idle
3607 * optimization: improved performance of BIT and SBIT on bit-vectors.
3608 * .fasl file incompatibility: The fasl file version number has
3609 been incremented because of changes associated with package locks.
3611 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3612 * minor incompatible change: the system no longer provides
3613 optimization hints (conditions which are TYPEP
3614 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3615 mode; these hints are still emitted when higher SPEED optimization
3617 * new contrib module: a sampling profiler (profiling by statistical
3618 sampling, rather than by instrumenting functions) is available as
3619 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3620 * the behaviour of the standard function ED is now customizeable by
3621 third parties through a hook variable: see ED's documentation
3622 string for information on the protocol.
3623 * the compiler no longer emits efficiency notes for (FUNCALL X)
3624 when the type of X is uncertain under default optimization
3626 * fixed bug 276: mutating a binding of a specialized parameter to a
3627 method to something that is not TYPEP the specializer is now
3629 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3630 exhibit the required behaviour on the x86 platform. (thanks to
3631 Peter van Eynde, Eric Marsden and Bruno Haible)
3632 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3633 even for difficult arguments. (reported by Peter Graves)
3634 * fixed bug 141a: the backquote printer now descends quoted
3636 * fixed another bug in backquote printing: no more destructive
3637 modification of the form's list structure. (reported by Brian
3639 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3640 move between its address being taken and the call to
3641 interrupt_thread, fixing a crashing race condition.
3642 * the SB-POSIX contrib implementation has been adjusted so that it
3643 no longer exhibits ridiculously poor performance when constructing
3644 instances corresponding to C structs.
3646 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3647 * minor incompatible change: the sb-grovel contrib now treats C
3648 structures as alien (in the sense of SB-ALIEN) objects rather than
3649 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3650 has implications for memory management of client code
3651 (sb-grovel-returned objects must now be manually managed) and for
3652 type safety (alien objects now have full types).
3653 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3654 used to control emission of compiler diagnostics, rather than the
3655 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3656 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3657 quality should be considered deprecated.
3658 * install.sh now installs the user manual as well
3659 * (not quite a new documentable feature, but worth considering in
3660 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3661 beginnings of a semantically meaningful condition hierarchy is
3662 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3664 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3665 designator as the defaults argument.
3666 * fixed bug: Displaced arrays whose displaced-to array has become
3667 too small now cause ARRAY-DIMENSION to signal an error, providing
3668 for safer bounds-checking. (reported by Bruno Haible)
3669 * fixed bug: DEFCLASS slot definitions with identical :READER and
3670 :WRITER names now signal a reasonable error. (reported by Thomas
3672 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3674 * fixed bug: Invalid slot specification errors now print correctly.
3675 (thanks to Zach Beane)
3676 * fixed bug 320: Shared to local slot value transfers in class
3677 redefinitions now happen corrently from superclasses as
3678 well. (reported by Bruno Haible)
3679 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3681 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3682 improper lists correctly. (reported by Bruno Haible)
3683 * fixed bug 313: source-transform for <fun-name> was erroneously
3684 applied to a call of a value of a variable with name <fun-name>.
3685 (reported by Antonio Menezes Leitao)
3686 * fixed bug 307: The obsolete instance protocol ensures that
3687 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3688 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3689 remove dead unknown-values globs from the middle of the stack.
3690 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3691 easier to resume long computations after using *BREAK-ON-SIGNALS*
3692 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3693 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3694 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3695 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3696 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3697 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3699 * fixed a (fairly theoretical) bug in string printing: if
3700 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3701 does not have array-element-type equal to the most general string
3703 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3704 function name. (thanks to Nikodemus Siivola)
3705 * fixed bug: compile-time format string checker failed on
3706 non-closed ~{. (reported by Thomas F Burdick)
3707 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3708 don't warn on legal loop code involving more than one aggregate
3709 boolean. (thanks to Nikodemus Siivola)
3710 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3711 in keyword position to MAKE-PACKAGE was not being reported as
3713 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3714 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3716 * fixed bugs 280 and 312: the checking for multiple definitions in a
3717 file is less likely to become confused by uses of inline
3719 * fixed bug: the #S reader macro performs the keyword coercion
3720 specified for slot names. (reported by Kalle Niemitalo)
3721 * fixed bug: lambda lists may contain symbols whose names start with
3722 & but are not lambda-list-keywords; their occurrence triggers a
3724 * fixed bug 321: define-method-combination argument lambda lists do
3725 not cause invalid code to be generated when &optional or &aux
3726 variables have default values. (reported by Bruno Haible)
3727 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3728 have CLOS classes; this appears also to have fixed reported
3729 instability in stack exhaustion detection.
3730 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3731 MUFFLE-WARNING when no associated restart is present is now
3733 * optimization: rearranged the expansion of various defining macros
3734 so that each expands into only one top-level form in a
3735 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3737 * optimization: used a previously little-used slot in symbols to
3738 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3740 * fixed some bugs revealed by Paul Dietz' test suite:
3741 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3743 ** Fixed an optimization bug related to inheritance of initforms
3744 from local to shared slots.
3745 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3746 ** CAST optimizer forgot to flush argument derived type.
3747 ** print/read consistency on floats is now orders of magnitude
3748 more likely. (thanks also to Bruno Haible for a similar report
3750 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3751 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3752 for objects of type REAL. Make it so.
3753 ** SXHASH is specified (infelicitously) to respect similarity,
3754 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3755 it so. (thanks to Markus Ziegler)
3756 ** on the Alpha, the compiler succeeds in compiling functions
3757 returning a known number of arguments greater than 63.
3758 ** fixed handling of invalid NIL arguments in keyword position
3760 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3762 ** provided a readably-printable representation for RANDOM-STATE
3764 ** ensured that pathnames, where they have a namestring, always
3765 print using #P"..." syntax.
3767 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3768 * Support for the forthcoming 2.0 version of the NetBSD kernel
3769 running on x86 hardware has been added. (thanks to Perry
3770 E. Metzger most immediately, and others for their past work)
3771 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3772 current release version; SBCL's OpenBSD support had been broken
3773 since about the time of OpenBSD's switch to ELF binary format.)
3774 * [placeholder for DX summary]
3775 ** user code with &REST lists declared dynamic-extent, under high
3776 speed or space and low safety and debug optimization policy.
3777 * The manual has been converted to Texinfo format and the debugger
3778 chapter from the cmucl manual has been added.
3779 * A facility has been added to extract documentation strings from
3780 sbcl and store them as Texinfo-formatted snippets for inclusion in
3781 the manual (via Texinfo's @include directive)
3782 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3783 the test case to Dave Roberts)
3784 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3785 pointers. (reported by Sean Ross)
3786 * bug fix: PROFILE output is printed nicely even for large numerical
3787 values. (thanks to Zach Beane)
3788 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3789 greater than 32 handle EOF correctly.
3790 * bug fix: on X86 an immediate argument of the IMUL instruction is
3791 correctly printed in disassembly. (thanks to Lutz Euler)
3792 * bug fix: class slots in redefined classes preserve their old
3793 values. (thanks to Bruno Haible and Nikodemus Siivola)
3794 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3795 succeeds. (reported by Marco Baringer)
3796 * fixed some bugs revealed by Paul Dietz' test suite:
3797 ** READ-SEQUENCE now works on ECHO-STREAMs.
3798 ** RATIONALIZE works more according to its specification. (thanks
3801 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3802 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3803 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3804 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3805 should matter to you only if you rebind the printer control
3806 variables and then find you want different bindings in the
3807 debugger than in the ordinary execution of your program.)
3808 * The runtime build system has been tweaked to support building
3809 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3810 assembler and linker. (thanks to Nikodemus Siivola)
3811 * Unbound, undefined, undeclared variables now trigger full
3812 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3813 more often programmer error than deliberate exploitation of undefined
3815 * optimization: the hash algorithm for strings has changed to one
3816 that is less vulnerable to spurious collisions. (thanks to Juho
3818 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3819 needless bounds checking. (thanks to Juho Snellman)
3820 * optimization: implemented multiplication as a modular
3821 (UNSIGNED-BYTE 32) operation on the PPC backend.
3822 * fixed some bugs revealed by Paul Dietz' test suite:
3823 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3825 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3826 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3827 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3829 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3831 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3833 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3834 their output stream on EOF from read.
3835 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3836 have been read to end-of-file.
3837 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3839 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3840 description of determination of which consecutive characters
3842 ** Printing the "Space" character with escaping on now yields "#\\ ",
3843 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3844 ** Reading floating-point numbers with *READ-BASE* set to a number
3845 less than 10 works correctly.
3846 ** Reading floating-point numbers with *READ-BASE* set to a number
3847 more than 10 works correctly.
3848 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3849 the readtable currently in effect.
3851 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3852 * minor incompatible change: parsing of namestrings on a physical
3853 (Unix) host has changed; numbers after the final #\. in a
3854 namestring are no longer interpreted as a version field. This is
3855 intented to be largely invisible to the user, except that the
3856 meaning of the namestring "*.*.*" has changed: it now refers to a
3857 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3858 should usually be replaced by
3859 (make-pathname :name :wild :type :wild :version :wild)
3860 with the added benefit that this is more likely to be portable.
3861 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3862 option to OPEN now signals an error if the file being opened
3863 exists; this may have an impact on existing code.
3864 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3865 signals received, on the PowerPC platforms (both Linux and
3866 Darwin). (thanks to Pierre Mai for pointing out the location of
3868 * several fixes on OS X: The system now builds and runs cleanly on
3869 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3870 (thanks to Brian Mastenbrook)
3871 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3872 second-resolution: integer multiples of 1/3600 between -24 and 24.
3873 (thanks to Vincent Arkesteijn)
3874 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3875 type when called with 1 argument; PEEK-CHAR checked type of
3876 PEEK-TYPE only after having read first character from a
3877 stream. (reported by Peter Graves)
3878 * bug fix: the garbage collector now has much better locality
3879 behaviour, and in particular no longer treats all memory as being
3880 exhausted when many small objects point to each other in a deeply
3882 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3883 recognized as being TYPEP their class.
3884 * bug fix: the PUSHNEW documentation string has been corrected.
3885 (thanks to Vincent Arkesteijn)
3886 * bug fix: defaulting of the value for the last of an atypically
3887 large number of multiple values being bound was not being
3888 performed correctly on the Alpha or PPC platforms
3889 * optimization: implemented multiplication as a modular
3890 (UNSIGNED-BYTE 32) operation on the x86 backend.
3891 * optimization: SEARCH on simple-base-strings can now be open-coded.
3892 (see also contrib/compiler-extras.lisp for inspiration for
3893 teaching the compiler about the Boyer-Moore algorithm).
3894 * value, returned by MAX (and MIN) called with several EQUALP, but
3895 not EQL, arguments now does not depend on compiler settings.
3896 * fixed some bugs revealed by Paul Dietz' test suite:
3897 ** in stack analysis liveness information is propagated from
3898 non-local entry points.
3899 ** pathwise CAST removing failed when the CAST node did not start
3901 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3902 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3904 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3905 host is already defined.
3906 ** RENAME-FILE works on streams instead of signalling an internal
3908 ** PEEK-CHAR uses the current readtable when determining whether
3909 or not a character is whitespace.
3910 ** MERGE-PATHNAMES handles the case when the pathname does not
3911 specify a name while the default-pathname specifies a version.
3912 ** Pathnames now stand a better chance of respecting print/read
3914 ** Attempting to use standardized file system operators with a
3915 pathname with invalid :DIRECTORY components signals a
3917 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3919 ** DIRECTORY on logical pathnames is more correct.
3920 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3921 signal a TYPE-ERROR if their argument is not a stream.
3922 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3923 designator argument does not designate a stream.
3924 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3925 examining the synonym.
3926 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3928 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3929 element-type larger than ([UN]SIGNED-BYTE 32).
3931 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3932 * When built with the :SB-FUTEX feature, threaded builds now take
3933 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3934 for faster/more reliable mutex and condition variable support.
3935 * Incompatible change (but one you probably shouldn't have been using
3936 anyway): the interface and code for arbitrating between multiple
3937 threads in the same user session has been redesigned.
3938 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3939 error when called without an explicit environment argument.
3940 (thanks to Nikodemus Siivola)
3941 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3942 confused about their position. (thanks to Adam Warner and Gerd
3944 * bug fix: Pretty printing backquoted forms with unquotations in the
3945 argument list position of various code constructs such as LAMBDA
3946 now works correctly. (reported by Paul Dietz)
3947 * bug fix: Pretty printing unquotations no longer loses all
3948 stream position information.
3949 * optimization: performance of string output streams is now less
3950 poor for multiple small sequence writes.
3951 * optimization: performance of CSUBTYPEP in the presence of complex
3952 expressions involving CONS and NOT many times has been improved.
3953 (reported by Paul Dietz)
3954 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3956 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3957 streams for the REPL, for the debugger, and so on. (thanks to
3959 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3960 * fixed some bugs revealed by Paul Dietz' test suite:
3961 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3962 is ignored if it is too small, rather than propagating through
3963 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3964 ** extremely complex negations of CONS types were not being
3965 sufficiently canonicalized, leading to inconsistencies in
3967 ** VALUES tranformer lost derived type.
3969 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3970 * fixed a bootstrapping bug: the build process no longer assumes
3971 that the various BOOLE-related constants have the same value in
3972 host and target lisps. (noted by Paul Dietz' test suite on an
3973 SBCL binary built from CLISP)
3974 * The system can now be dynamically linked on the MIPS platform,
3975 which enables dynamic loading of foreign code from Lisp. (thanks
3976 to Ralf Baechle for discussions on the MIPS ABI)
3977 * The system now records debugging information for its own source
3978 files in a filesystem-position-independent manner, relative to
3979 the "SYS" logical host.
3980 * fixed a compiler bug: MV-LET convertion did not check references
3981 to the "max args" entry point. (reported by Brian Downing)
3982 * tweaked disassembly notes to be less confident about proclaiming
3983 some instruction as an LRA. (thanks to Brian Downing)
3984 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3985 now each have their own history, command character, and other
3986 characteristics. (thanks to David Lichteblau)
3987 * fixed some bugs revealed by Paul Dietz' test suite:
3988 ** compiler failure in compiling LOGAND expressions including a
3990 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3991 shift greater than 32.
3992 ** FLUSH-DEST did not mark blocks for type check regeneration.
3993 ** HANDLER-CASE failed to accept declarations in handler clauses
3994 in some circumstances.
3996 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3997 * New code in contrib/sb-introspect (still probably not entirely
3998 stable yet) provides some support for smart Lisp development
3999 environments like SLIME.
4000 * The conditions signalled for errors occurring when loading .fasl
4001 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4002 in a way which should help ASDF recover gracefully.
4003 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4004 stuff has been cleaned up. If you code contrib/ stuff, this might
4005 affect you, and you can look at contrib/README, contrib/STANDARDS,
4006 and/or the 0.8.4.27 diff to check.
4007 * In full calls the compiler now does not generate checks for declared
4008 argument types for all arguments.
4009 * various threading fixes
4010 ** and some experimental patches which didn't make it into
4011 the main tree for this release, but which are shipped in
4012 contrib/experimental-thread.patch as a possible fix for some
4013 failures (deadlock, spinning...) in GC-intensive multithreaded
4015 * fixed PPC build problem (source code incompatibility of different
4016 library versions): added offsetof() hackery which attempts to divine
4017 where glibc maintainers put uc_mcontext today
4018 * fixed bug 282: compiler does not trust type assertions while passing
4019 arguments to a full call.
4020 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4021 &OPTIONAL VALUES type parameter.
4022 * fix bug 214: algorithm for noting rejected templates is now more
4023 similar to that of template seletion. (also reported by rydis on
4025 * fixed bug 141b: printing backquoted information readably and prettily
4026 inserts a space where necessary.
4027 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4028 (CHARACTER 10) are now reported as errors, rather than propagated
4029 as unknown types. (reported by piso on #lisp)
4030 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4031 with values NIL and :ERROR. (thanks to Milan Zamazal)
4032 * fixed bug 191c: CLOS now does proper keyword argument checking as
4033 described in CLHS 7.6.5 and 7.6.5.1.
4034 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4035 longer raise an error; further, using a list as a for-as-arithmetic
4036 counter now raises a meaningful error.
4037 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4038 now understood by sequence creation functions such as MAKE-SEQUENCE
4040 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4041 a STRING-INPUT-STREAM.
4042 * compiler enhancement: SIGNUM is now better able to derive the type
4044 * type declarations inside WITH-SLOTS are checked. (reported by
4046 * fixed some bugs revealed by Paul Dietz' test suite:
4047 ** incorrect optimization of TRUNCATE for a positive first
4048 argument and negative second.
4049 ** compiler failure in let-convertion during flushing dead code.
4050 ** compiler failure while deriving type of TRUNCATE on an
4051 interval, containing 0.
4052 ** ASH of a negative bignum by a negative bignum count now returns
4054 ** intersection of CONS types now canonicalizes properly, fixing
4055 inconsistencies in SUBTYPEP.
4057 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4058 * incompatible change: The --disable-debugger command line
4059 option now clobbers the debugger at a more fundamental
4060 level, by redefining #'INVOKE-DEBUGGER instead of by
4061 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4062 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4063 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4064 enter the debugger REPL and then suffer recursive errors
4065 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4066 while under the new system, BREAK in --disable-debugger mode
4067 terminates the system just as an unhandled error would.
4068 * fixed compiler performance when processing loops with a step >1;
4069 * bug fix: DOCUMENTATION now retrieves generic function
4070 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4071 support has been systematized, and now supports the methods
4072 specified by ANSI, along with a default method and a method for
4073 slot documentation. (reported by Nathan Froyd)
4074 * bug fix: effective methods associated with a generic function are
4075 no longer cached over a change of that generic function's method
4076 combination. (reported by Andreas Fuchs)
4077 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4078 names a non-existent directory. (thanks to Andreas Fuchs)
4079 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4080 the PPC platform, lead to stack corruption; this has been fixed.
4081 (reported by Rainer Joswig)
4082 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4083 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4084 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4085 arithmetic in general, is now much more reliable on the PPC
4087 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4088 platform now returns the right answer.
4089 * optimization: restored some effective method precomputation in
4090 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4091 precomputation is now tunable.
4092 * optimization: compiler-internal data structure use has been
4093 reviewed, and changes have been made that should improve the
4094 performance of the compiler by about 20%.
4095 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4096 simple-base-strings and simple-bit-vectors is improved.
4097 * optimization: the optimization of 32-bit logical and arithmetic
4098 functions introduced in version 0.8.3 on the x86 has been
4099 implemented on the mips, ppc and sparc platforms; an
4100 implementation of the same facility, but for 64-bit arithmetic,
4101 has been added for the alpha.
4102 * microoptimization: the compiler is better able to make use of the
4103 x86 LEA instruction for multiplication by constants.
4104 * bug fix: in some situations compiler did not report usage of
4105 generic arithmetic in (SPEED 3) policy.
4106 * bug 145b fix: compiler used wrong type specifier while converting
4107 MEMBER-types to numeric.
4108 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4110 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4111 index argument now works properly on the Alpha platform.
4112 * bug fix: floating point exception treatment on the Alpha platform
4114 * bug fix: FILE-POSITION works much better on string input and
4115 output streams. (thanks to Nikodemus Siivola)
4116 * bug fix: many threading/garbage collection symptoms sorted.
4117 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4118 might be pseudo-atomic.
4119 * internal change: Stopping for GC is now done with signals not
4120 ptrace. GC is now done in whichever thread wanted it, instead of
4122 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4124 * bug fix: result form in DO is not contained in the implicit
4126 * incompatible change: ICR structure is changed; the value part of
4127 CONTINUATION is now called LVAR; corresponding functions are
4128 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4129 * added type deriver for ISQRT (thanks to Robert E. Brown).
4130 * bug fix: better support for loading from the command line when an
4131 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4133 * fixed some bugs revealed by Paul Dietz' test suite:
4134 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4135 ** ROUND and FROUND now give the right answer when given very
4136 small float arguments.
4137 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4139 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4140 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4141 ** LCM should return a non-negative integer.
4142 ** PARSE-INTEGER returned the index of a terminator instead of the
4143 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4144 ** PARSE-INTEGER returned an incorrect index being applied to a
4146 ** LCM with two arguments of 0 returns 0 rather than signalling
4148 ** unsigned addition of a 32-bit constant with the high bit set no
4149 longer causes an internal compiler error on the x86.
4150 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4151 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4152 with negative last argument.
4153 ** byte specifiers with zero size and position no longer cause
4154 an error during type derivation.
4155 ** bignum multiplication on the Alpha platform now returns the
4157 * porting: The system now builds on SuSE AMD64, although it still
4158 generates a 32-bit binary.
4159 * .fasl file incompatibility: The fasl file version number has
4160 been incremented (because of the changes to internal compiler
4161 data structures referred to above).
4163 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4164 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4165 more accurately, on the Darwin kernel running on PowerPC hardware.
4166 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4167 * Compiler code deletion notes now signal a condition of type
4168 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4169 an associated MUFFLE-WARNING restart.
4170 * The compiler now performs limited argument count validation of
4171 constant format strings in FORMAT, and where appropriate in ERROR,
4172 CERROR and WARN. (thanks to Gerd Moellmann)
4173 * New ASDF-INSTALL contrib can be used for automatic download and
4174 installation of third-party Lisp code from CCLAN or other sites
4176 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4177 which forces another thread to execute a function supplied by the
4179 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4180 now accept and act upon their :ELEMENT-TYPE keyword argument.
4181 (reported by Martin Atzmueller, Edi Weitz)
4182 * bug fix: FILE-POSITION now accepts position designators up to
4183 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4184 is the greater. (thanks to Patrik Nordebo)
4185 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4186 Kalle Olavi Niemitalo)
4187 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4188 printable. (reported by Eric Marsden)
4189 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4190 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4191 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4192 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4193 (thanks to Stig Sandoe)
4194 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4195 UNREAD-CHAR now correctly includes the unread character in the
4196 target sequence. (thanks to Gerd Moellmann)
4197 * bug fix in threaded builds: the system can now be suspended and
4198 resumed by shell job control with minimal disruption.
4199 * bug fixes in times and timezones >2038AD
4200 * better handling of "where is GNU make?" problem in build scripts
4201 (thanks to Nikodemus Siivola)
4202 * new optimization: inside a named function any reference to a
4203 function with the same name is considered to be a self-reference;
4204 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4205 optimization quality.
4206 * new optimization on x86: logical functions and + now have
4207 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4208 used when the result is truncated to 32 bits.
4209 * VALUES declaration is partially enabled.
4210 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4211 * fixed some bugs revealed by Paul Dietz' test suite:
4212 ** The system now obeys the constraint imposed by
4213 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4214 types form a lattice under type intersection.
4215 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4216 ** ASSOC now ignores NIL elements in an alist.
4217 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4218 and (1+ MOST-POSITIVE-FIXNUM) answers.
4219 ** The addition of a method with invalid qualifiers to a generic
4220 function does not cause an error to be signalled immediately;
4221 a warning is signalled, and the error is generated only on
4222 calling the generic function.
4223 * changed .fasl file version number, in part to add type codes for
4224 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4225 obscure ANSI requirements
4227 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4228 * fixed bug 148: failure to inline-expand a local function left
4229 garbage, confusing the compiler.
4230 * fixed bugs 3cd: structure slot readers perform type check if the
4231 slot can have an invalid value (i.e. it is either not initialized
4232 or can be written with a less specific slot writer).
4233 * bug fix: the compiler now traps array references to elements off
4234 the end of an array; previously, the bounds checking in some
4235 circumstances could go off-by-one.
4236 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4238 * type declarations for array element types now obey the description
4239 on the CLHS page "Declaration TYPE", as per discussions on
4240 sbcl-help around 2003-05-08. This means that a declaration
4241 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4242 declaration, all references to BAR will be asserted or assumed
4243 (with THE, so dependent on compiler policy) to involve objects of
4244 type FOO. Note that no such declaration is implied in
4245 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4246 * declared types of functions from the "Conditions"
4247 chapter. (reported by Paul Dietz)
4248 * bug fix: CERROR accepts a function as its first argument.
4249 * bug fix: NTH an NTHCDR accept a bignum as index
4250 arguments. (reported by Adam Warner)
4251 * optimization: character compare routines now optimize comparing
4252 against a constant character. (reported by Gilbert Baumann)
4253 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4254 argument now works properly on the MIPS platform.
4255 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4256 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4257 declared to have a functional type, does not cause an error
4259 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4260 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4261 * fixed bug: if last continuation of a deleted block has a
4262 destination, this destination should be deleted too. (reported by
4264 * fixed a bug in the bootstrap process: the host compiler's values
4265 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4266 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4267 test case from Patrik Nordebo)
4268 * improved the ability of the disassembler on the PPC platform to
4269 provide helpful disassembly notes.
4270 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4271 the class in more cases than previously.
4272 * bug fix: FILE-POSITION now understands :START and :END for
4273 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4274 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4275 8) data. (thanks to David Lichteblau)
4276 * bug fix: it is possible to add a method to a generic function
4277 without lambda list.
4278 * bug fix: reader failed to signal END-OF-FILE inside an
4279 object representation. (reported by Nikodemus Siivola)
4280 * fixed some bugs revealed by Paul Dietz' test suite:
4281 ** LAST and [N]BUTLAST should accept a bignum.
4282 ** condition slot accessors are methods.
4283 ** (VECTOR NIL) is a subtype of STRING.
4285 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4286 * minor incompatible change: some nonsensical specialized lambda
4287 lists (used in DEFMETHOD) which were previously ignored now signal
4289 * minor incompatible change: the system is now aware of the types of
4290 variables in the COMMON-LISP package, and will signal errors for
4291 most violations of these type constraints (where previously they
4292 were silently accepted).
4293 * minor incompatible change: COMPILE-FILE now uses the freedom
4294 afforded (ANSI 3.2.2.3) to use derived function types for
4295 functions defined in the same file. This also permits the system
4296 to warn on static type mismatches and function
4297 redefinition. (Currently it does not work with high DEBUG level.)
4298 * minor incompatible change: VALUES declaration is disabled.
4299 * When issuing notes, the compiler now signals a condition of type
4300 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4301 restart for use in user handlers. It is expected that the
4302 COMPILER-NOTE condition will eventually become a condition
4303 supertype to a hierarchy of note types, which will then be
4304 handleable in a similar fashion. However, at the moment, no such
4305 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4306 but it's an implementation detail, not a classification for the
4308 * Changes in type checking closed the following bugs:
4309 ** type checking of unused values (192b, 194d, 203);
4310 ** template selection based on unsafe type assertions (192c, 236);
4311 ** type checking in branches (194bc).
4312 * A short form of VALUES type specifier has ANSI meaning (it has
4313 increased the number of situations when SBCL cannot perform type
4315 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4316 keywords or constants is permissible.
4317 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4318 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4319 classes. (thanks to Antonio Martinez)
4320 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4321 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4322 argument to a pretty-print stream. Instead, it leaves any such
4323 operations to DESCRIBE-OBJECT methods.
4324 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4326 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4327 lambda lists. (thanks to David Lichteblau)
4328 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4329 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4330 (thanks to Gerd Moellmann)
4331 * fixed bug 246: increased compilation speed of long
4332 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4334 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4336 * DEFCONSTANT now throws a condition of type
4337 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4338 constant to a non-EQL value; CONTINUE and ABORT restarts
4339 respectively change and preserve the value.
4340 * fixed bug 63: The code walker, part of the implementation of CLOS,
4341 is now better at handling symbol macros.
4342 * bug fix: There is no longer an internal implementation type named
4343 CL:LENGTH. (reported by Raymond Toy)
4344 * bug fix: In macro-like defining macros/special operators the
4345 implicit block does not enclose the lambda list.
4346 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4347 enclosed in parentheses) are not suitable as type specifiers, and
4348 their use properly signals an error now.
4349 * bug fix: An argument count mismatch for a type specifier in code
4350 being compiled no longer causes an unhandled error at compile
4351 time, but signals a compile-time warning.
4352 * fixed simple vector readable printing
4353 * bug fix: DESCRIBE takes more care over whether the class
4354 precedence list slot of a class is bound before accessing it.
4355 (reported by Markus Krummenacker)
4356 * bug fix: FORMATTER can successfully compile pretty-printer format
4357 strings which use variants of the ~* directive inside.
4358 * bug fix: SEARCH now applies its TEST predicate to the elements of
4359 the arguments in the correct order. (thanks to Wolfhard Buss)
4360 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4361 in type inference. (thanks to Robert E. Brown)
4362 * bug fix: Reading in symbols with an explicit package name of ""
4363 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4364 * fixed some bugs revealed by Paul Dietz' test suite:
4365 ** NIL is now allowed as a structure slot name.
4366 ** Arbitrary numbers, not just REALs, are allowed in certain
4367 circumstances in LOOP for-as-arithmetic clauses.
4368 ** Multiple class redefinitions before slot access no longer
4369 causes a type error.
4370 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4371 association between the name and a class.
4372 ** Generic functions with non-standard method-combination and over
4373 five methods all of which return constants no longer return NIL
4374 after the first few invocations. (thanks to Gerd Moellmann)
4375 ** CALL-NEXT-METHOD with no arguments now passes the original
4376 values of the arguments, even in the presence of assignment.
4377 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4379 ** DISASSEMBLE works with closures and funcallable instances.
4380 ** ADD-METHOD now returns the generic function, not the new method.
4381 ** FIND-METHOD signals an error if the lengths of the specializers
4382 is incompatible with the generic function, even if the ERRORP
4384 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4385 which its argument is a member.
4386 ** DEFCLASS only redefines the class named by its class-name
4387 argument if that name is the proper name of the class;
4388 otherwise, it creates a new class.
4389 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4390 of the UNBOUND-SLOT condition to the name of the slot.
4391 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4392 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4393 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4394 SLOT-MAKUNBOUND in the specified fashion.
4396 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4397 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4398 cross-compilation host. As a consequence, we can now bootstrap our
4399 way up to SBCL starting with a bare gcc toolchain and human-readable
4400 source code (first the source to CLISP, then the source to SBCL).
4401 * A contributed module containing a partial implementation of the
4402 simple-streams interface has been included. (thanks to Rudi
4404 * A contributed module implementing the RFC1321 Message Digest
4405 Algorithm, known as MD5, has been included.
4406 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4407 no longer has any effect, as the code controlled by this feature
4408 has been deleted. (As far as we know, no-one has ever built using
4409 this feature, and its semantics were confused in any case).
4410 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4411 work on conditions (as required by the ANSI specification),
4412 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4413 expected behaviour on conditions. Users should note, however,
4414 that such behaviour is not required by the ANSI specification,
4415 and so use of this behaviour may render their code unportable.
4416 * fixed some bugs revealed by Paul Dietz' test suite:
4417 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4419 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4420 ** SXHASH on condition objects no longer returns NIL.
4421 ** :ALLOCATION :CLASS slots are better treated; their values are
4422 updated on class redefinition, and initforms inherited from
4423 superclasses are applied.
4424 ** REMOVE-METHOD returns its generic function argument even when
4425 no method was removed.
4426 ** SHARED-INITIALIZE now initializes the values of the requested
4427 slots, including those with :ALLOCATION :CLASS.
4428 ** ALLOCATE-INSTANCE now works on structure classes defined via
4429 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4431 ** SLOT-EXISTS-P now works on conditions, as well as structures
4433 ** MAKE-LOAD-FORM now has the required methods on
4434 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4435 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4436 keyword, and now implements the SLOT-NAMES argument.
4437 ** methods with &OPTIONAL arguments no longer allow too many
4438 arguments to be passed in the call without error.
4439 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4440 option is consistent with the required arguments of the generic
4441 function lambda list.
4442 * bug fix: REQUIRE accepts a string designator. (Thanks to
4444 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4445 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4446 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4447 * bug fix: The compiler now checks for duplicated variables in macro
4449 * bug fix: SETQ on globals returns the correct value.
4450 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4451 not a COMPILER-ERROR (followed by some other strange error on
4452 choosing the CONTINUE restart).
4453 * bug fix: make.sh and friends are now more consistent in the way that
4454 they look for GNU "make".
4456 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4457 * experimental native threads support (on x86 Linux >=2.4 only).
4458 This is not compiled in by default: you need to add :SB-THREAD to
4459 the target features. See the "Beyond ANSI" chapter of the manual
4461 * fix for longstanding nonANSIism: The old distinction between
4462 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4463 The return value from CL:FIND-CLASS is now a CLOS class, and
4464 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4465 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4466 * An interface to the MetaObject Protocol, as described in Kiczales,
4467 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4468 MIT Press, 1991, is available from the SB-MOP package.
4469 * incompatible change: the SB-PCL package should now be considered
4470 a private implementation detail, and no longer a semi-private MOP
4472 * minor incompatible change: due to rearrangement for threads, the
4473 control stack and binding stack are now allocated at arbitrary
4474 addresses instead of being hardcoded per-port. Users affected by
4475 this probably have to be doing advanced things with shared
4476 libraries, and will know who they are.
4477 * minor incompatible change: Previously, all --eval forms used were
4478 processed with READ before any of them were processed with EVAL.
4479 Now each --eval form is processed with both READ and EVAL before
4480 the next --eval form is processed. (Thus package operations like
4481 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4482 work as the user might reasonably expect.)
4483 * minor incompatible change: *STANDARD-INPUT* is now only an
4484 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4486 * minor incompatible change: Y-OR-N-P is now character-oriented,
4487 not line oriented. Also, YES-OR-NO-P now works without errors.
4488 (thanks to Antonio Martinez)
4489 * sb-aclrepl module improvements: an integrated inspector, added
4490 repl features, and a bug fix to :trace command.
4491 * Known functions, which cannot be open coded by the backend, are
4492 considered to be able to check types of their arguments. (fixing
4493 a bug report by Nathan J. Froyd)
4494 * fixed a bug in computing method discriminating functions: It is
4495 now possible to define methods specialized on classes which have
4496 forward-referenced superclasses. (thanks to Gerd Moellmann)
4497 * fixed evaluation order in optional entries (reported by Gilbert
4499 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4500 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4501 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4502 required-by-AMOP NAME argument, as well as CLASS and
4503 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4504 * fixed bug 20: DEFMETHOD can define methods using names that are
4505 not the proper names of classes to designate class specializers.
4506 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4507 Unix file descriptors, instead of blowing up. (thanks to Antonio
4509 * Garbage collection refactoring: user-visible change is that a
4510 call to the GC function during WITHOUT-GCING will not do garbage
4511 collection until the end of the WITHOUT-GCING. If you were doing
4512 this you were probably losing anyway.
4513 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4514 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4515 TYPEP the latter but not the former.
4516 * The compiler issues a full WARNING for calls to undefined functions
4517 with names from the CL package.
4518 * MAP-INTO for a vector destination is open coded. (reported by
4519 Brian Downing on c.l.l)
4520 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4521 documentation string.
4522 * fixed some bugs revealed by Paul Dietz' test suite:
4523 ** COPY-ALIST now signals an error if its argument is a dotted
4525 ** Condition slots are now accessed more correctly in the presence
4526 of multiple initargs for a given slot.
4527 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4528 exclude restarts of the same name associated with a different
4530 ** DEFCLASS of forward-referenced classes with another
4531 forward-referenced class in the superclasses list no longer
4533 ** Condition slots are now initialized once each, not multiple
4534 times. (thanks to Gerd Moellmann)
4535 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4537 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4538 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4539 arguments contain duplicated elements.
4540 ** RESTART-CASE understands local macros.
4541 ** RESTART-CASE associates exactly its own restarts with a condition.
4542 ** ENDP in safe mode checks its argument to be of type LIST.
4543 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4544 in question is unbound.
4545 ** Optimized MAKE-INSTANCE functions no longer cause internal
4546 assertion failures in the presence of duplicate initargs.
4547 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4548 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4549 propagated even in the ctor optimized implementation of
4551 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4553 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4554 * a better implementation of SXHASH on (simple) bit vectors,
4555 measured both in execution speed and in distribution of results
4556 over the positive fixnums, has been installed. Likewise, a better
4557 implementation of EQUAL for simple bit vectors is now available.
4558 * fixed CEILING optimization for a divisor of form 2^k.
4559 * fixed bug 240 (emitting extra style warnings "using the lexical
4560 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4561 by Antonio Martinez)
4562 * fixed SXHASH, giving different results for NIL depending on type
4563 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4564 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4565 variable. (found by Rolf Wester)
4566 * SBCL does not ignore type declarations for special
4567 variables. (reported by rif on c.l.l 2003-03-05)
4568 * some bug fixes in contrib/sb-aclrepl/
4569 * fixed some bugs revealed by Paul Dietz' test suite:
4570 ** a bug in the CONS type specifier, whereby the CAR and CDR
4571 types got intertwined, has been fixed;
4572 ** the type system is now able to reason about the interaction
4573 between INTEGER and RATIO types more completely;
4574 ** APPEND, [N]REVERSE and NRECONC check that those their
4575 arguments, which must be proper lists, are really so;
4576 ** An array specialized to be unable to hold elements has been
4577 implemented, as required -- yes, really -- by ANSI;
4578 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4579 on malformed property lists;
4581 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4582 * incompatible packaging change: in line with Unix convention,
4583 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4584 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4585 * REQUIRE and PROVIDE are now optionally capable of doing something
4586 useful. See the documentation string for REQUIRE.
4587 * infrastructure for a managed SBCL contrib system: contributed
4588 modules in this release include:
4589 ** the ASDF system definition facility;
4590 ** an interface to the BSD Sockets API;
4591 ** an ACL-like convenience interface to the repl;
4592 (thanks to Kevin Rosenberg)
4593 ** an implementation of ROTATE-BYTE, with efficient implementation
4595 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4596 gives a closer approximation to the right answer than previously.
4597 (thanks to Raymond Toy)
4598 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4599 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4600 optional environment arguments, as required by ANSI.
4601 * fixed bugs in other functions taking environment objects, allowing
4602 calls with an explicit NIL environment argument to be compiled
4604 * fixed bug 228: primary return values from
4605 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4606 COMPILE or FUNCTION.
4607 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4608 :TYPE will no longer signal errors on innocuous objects.
4609 * fixed bug 231b: SETQ is better at respecting type declarations in
4610 the lexical environment.
4611 * fixed a bug in DEFCLASS: classes named by symbols with no or
4612 unprintable packages can now be defined.
4613 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4614 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4615 * fixed compiler failure related to checking types of functions.
4616 (reported by Robert E. Brown)
4617 * the compiler is now much more consistent in its error-checking
4618 treatment of bounding index arguments to sequence functions: in
4619 (SAFETY 3) code, errors will be signalled in almost all cases if
4620 invalid sequence bounding indices are passed to functions defined
4621 by ANSI to operate on sequences.
4622 * fixed a bug in the build procedure: documentation of SBCL-specific
4623 packages is now preserved and available in the final Lisp image.
4624 * lifted FDEFINITION lookup out of loops in the implementation of
4625 many list operations. (thanks to Robert E. Brown)
4626 * fixed a bug in the reader: the #n# reader macro now works for
4627 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4628 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4629 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4630 E. Brown and Tony Martinez respectively)
4631 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4632 SLOT-BOUNDP: in particular, it is now able to optimize them much
4633 better, and is now not vulnerable to having packages renamed.
4634 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4635 always called when a slot is not present in an instance. (thanks
4637 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4638 longer signal an error on unreading a character following EOF on
4639 the previous constituent stream. (thanks to Tony Martinez)
4640 * fixed some bugs revealed by Paul Dietz' test suite:
4641 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4642 not just nonnegative fixnums;
4643 ** the logical bit-array operators such as BIT-AND now accept an
4644 explicit NIL for their "opt-arg" argument (to indicate a
4645 freshly-consed result bit-array);
4646 ** ELT now signals an error on an invalid sequence index in safe
4648 ** the type system is now cleverer about negations of numeric
4649 types, and consequently understands the BIGNUM and RATIO types
4651 ** the type system is now cleverer about the interaction between
4652 INTEGER and RATIO types: while bugs still remain, many more
4653 cases are accurately computed;
4654 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4655 if it is in the last clause;
4656 ** CONSTANTLY now correctly returns a side-effect-free function in
4658 ** DECLARE is no longer treated as a special-operator; in
4659 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4660 * incremented fasl file version number due to the change in the
4661 DEFSTRUCT-SLOT-DESCRIPTION structure.
4663 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4664 * minor incompatible change: code processed by the "interpreter" or
4665 EVAL now has a compilation optimization policy of (DEBUG 2)
4666 (changed from (DEBUG 1)) to improve debuggability of interactive
4667 development, and to allow the use of the debug RETURN command in
4669 * an experimental implementation of the RETURN command for the
4670 debugger has been included. (thanks to Frederik Kuivinen)
4671 * fixed bug 62: constraints were not propagated into a loop.
4672 * fixed bug in embedded calls of SORT (reported and investigated by
4674 * fixed some bugs revealed by Paul Dietz' test suite:
4675 ** printing and reading of arrays with some dimensions having
4676 length 0 (thanks to Gerd Moellmann);
4677 ** BOA constructor with &AUX argument without a default value does
4678 not cause a type error;
4679 ** CONSTANTP now returns true for all self-evaluating objects.
4681 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4682 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4683 accessors that are related by inheritance, as specified in the
4684 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4685 Valtteri Vuorikoski)
4686 * The compiler is now able to inline functions that were defined in
4687 a complex lexical environment (e.g. inside a MACROLET).
4688 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4690 * Support for the upcoming FreeBSD-5.0 release has been included.
4691 (thanks to Dag-Erling Smorgrav)
4692 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4693 effect when it is not in a toplevel context.
4694 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4695 stand a better chance of being correct. (thanks to Gerd
4697 * fixed bug in COERCE, which now signals an error on coercing a
4698 rational to a bounded real type which excludes the expected
4700 * The compiler is now able to derive types more accurately from the
4701 COERCE and COMPILE functions.
4702 * fixed bug 223: functional binding is considered to be constant
4703 only for symbols in the CL package.
4704 * fixed bug 231: SETQ did not check the type of a variable being set
4705 (reported by Robert E. Brown)
4706 * A new optimization for MAKE-INSTANCE has been included, fixing
4707 various bugs (including relating to :ALLOCATION :CLASS slots and
4708 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4710 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4711 ** As required by ANSI, LOOP now disallows anonymous collection
4712 clauses such as COLLECT I in conjunction with aggregate boolean
4713 clauses such as THEREIS (= I 1);
4714 ** LOOP now signals an error when any variable is reused in the
4715 same loop (including the potentially useful construct analogous
4716 to WITH A = 1 WITH A = (1+ A);
4717 ** IT is only a special loop symbol within the first clause of a
4718 conditional loop clause;
4719 ** LOOP with a typed iteration variable over a hashtable now
4720 signals a type error iff it should.
4721 * fixed some other bugs revealed by Paul Dietz' test suite:
4722 ** FILE-STREAM now names the class previously known as FD-STREAM;
4723 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4724 argument) no longer signals an error;
4725 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4726 of the slot symbol, rather than using the current package
4727 ((:CONC-NAME "") continues to intern the slot's name in the
4729 * incremented fasl file version number, because of the incompatible
4730 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4731 of the new implementation of DEFINE-COMPILER-MACRO.
4733 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4734 * Support for building SBCL for MIPS platforms running in
4735 little-endian mode has now been checked in, and basic
4736 functionality on said platforms verified.
4737 * minor incompatible change: PCL now records the pathname of a file
4738 in which methods and the like are defined, rather than its
4740 * minor incompatible change: TRUENAME now considers the truename of
4741 a file naming a directory to be the pathname with :DIRECTORY
4742 component indicating that directory.
4743 * minor incompatible change: a NAMED clause in the extended form of
4744 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4745 reason for the previous behaviour is unclear.
4746 * more systematization and improvement of CLOS and MOP conformance
4747 in PCL (thanks to Gerd Moellman and Pierre Mai):
4748 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4750 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4751 primary methods with no specializers;
4752 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4754 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4755 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4756 FORWARD-REFERENCED-CLASSes; error reporting on
4757 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4759 ** SXHASH on CLOS instances now uses a slot internal to the
4760 instance to return different numbers on distinct instances,
4761 while preserving the same return value through invocations of
4763 ** DEFMETHOD signals errors when methods with longer incongruent
4764 lambda lists are added to generic functions;
4765 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4766 CLASS, as specified in AMOP;
4767 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4768 on the order returned by the primary method for classes of
4769 class STANDARD-CLASS;
4770 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4771 * fixed some bugs shown by Paul Dietz' test suite:
4772 ** DOLIST puts its body in TAGBODY;
4773 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4775 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4776 value producing form;
4777 ** if more variables are given to PROGV than values, extra
4778 variables are bound and made to have no value;
4779 ** NSUBSTITUTE on list arguments gets the right answer with
4781 ** ELT signals an error of type TYPE-ERROR when the index argument
4782 is not a valid sequence index;
4783 ** LOOP signals (at macroexpansion time) an error of type
4784 PROGRAM-ERROR when duplicate variable names are found;
4785 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4786 ** FUNCALL of special-operators now cause an error of type
4788 ** PSETQ now works as required in the presence of side-effecting
4789 symbol-macro places;
4790 ** NCONC accepts any object as its last argument;
4791 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4793 ** loop-for-as-package does not require a package to be explicitely
4795 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4797 * fixed bug 166: compiler preserves "there is a way to go"
4798 invariant when deleting code.
4799 * fixed bug 172: macro lambda lists with required arguments after
4800 &REST arguments now cause an error to be signalled. (thanks to
4802 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4803 bug. (thanks to Matthew Danish)
4804 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4806 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4807 arguments are lexically rebound. (thanks to Gerd Moellmann and
4809 * fixed bug 194: error messages are now more informative when there
4810 is no primary method applicable in a call to a generic
4811 function. (thanks to Gerd Moellmann)
4812 * fixed bug in command line argument checking (thanks to Julian
4814 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4815 (thanks to Matthew Danish)
4816 * incremented fasl file version number, because of the
4817 SXHASH-related changes in the layout of CLOS data structures
4819 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4820 * minor incompatible change: The runtime (the Unix executable named
4821 "sbcl") is now much pickier about the .core files it will load.
4822 Essentially it now requires .core files to descend from the same
4823 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4824 as the runtime does. (The intent is to prevent the crashes which
4825 can occur, and which can even be reported as mysterious failures,
4826 when people patch the sources or change the build parameters
4827 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4828 sbcl and .core files.)
4829 * fixed bug: VALUES-LIST is no longer optimized away.
4830 * fixed bug 142: The FFI conversion of C string values to Lisp
4831 string values no longer conses excessively. (thanks to Nathan
4832 Froyd porting Raymond Toy's fix to CMU CL)
4833 * began to systematize and improve MOP conformance in PCL (thanks to
4834 Nathan Froyd, Gerd Moellman and Pierre Mai):
4835 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4837 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4838 ** FINALIZE-INHERITANCE is now called on class finalization;
4839 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4840 argument precedence order.
4841 * fixed bug 202: The compiler no longer fails on functions whose
4842 derived types contradict their declared type.
4843 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4844 so it can be non-toplevel.
4845 * The fasl file version number has changed (because of the new
4846 implementation of DEFMACRO).
4847 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4848 safe code, that any length requirement by their type-specifier
4849 argument is valid. The exceptions to this are described in bug
4851 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4852 functions now check the types of their inputs as required by ANSI.
4853 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4854 introduced symbol is DECLAREd to be SPECIAL.
4855 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4856 * fixed bug: :COUNT argument to sequence functions may be negative
4857 * fixed bug: body of DO-SYMBOLS may contain declarations
4858 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4859 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4860 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4861 symbol macro only once
4862 * fixed printing of call frame when argument list is unavailable
4863 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4864 * compiler no longer signals WARNING on unknown keyword
4867 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4868 * A beta-quality port to the mips architecture running Linux,
4869 based on the old CMUCL backend, has been made. It has been tested
4870 on a big-endian kernel, and works sufficiently well to be able to
4871 rebuild itself; it has not been tested in little-endian mode.
4872 * fixed an inconsistency between gencgc.c and purify.c which made
4873 dumping/loading .core files unreliable
4874 * fixed bug 120a: The compiler now deals correctly with IFs where
4875 the consequent is the same as the alternative, instead of
4876 misderiving the return type. (thanks to Alexey Dejneka)
4877 * fixed bug 113: Logical pathnames are now dumpable (the logical
4878 host is resolved at load-time, throwing an error if it is not
4880 * fixed bug 174: FORMAT's error message is slightly clearer when a
4881 non-printing character is used in a format directive.
4882 * fixed several bugs in compiler checking of type declarations, i.e.
4883 violations of the Python "declarations are assertions" principle
4884 (thanks to Alexey Dejneka)
4885 * fixed several bugs in PCL's error checking (thanks to Gerd
4887 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4889 * fixed bug in compilation of functions as first class values
4890 (thanks to Antonio Martinez-Shotton)
4891 * The compiler's handling TYPE-ERRORs which it can prove will
4892 inevitably happen at runtime has been cleaned up and corrected
4893 in several ways. (thanks to Alexey Dejneka)
4894 * improved argument type checking for various basic arithmetic
4895 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4896 lavished on them in the past that they can be compiled in many
4897 ways in different special cases
4898 * fixed bug 181: compiler checks validity of user supplied type
4900 * cleaned up code flushing in optimization: Function calls which
4901 should signal errors for safety purposes (e.g. which ANSI says
4902 should signal errors when their arguments are of incorrect type)
4903 are no longer optimized away.
4904 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4905 * incremented fasl file version number, because changes in the
4906 implementation of sequence functions like COERCE caused
4907 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4908 in old inline expansions) to become undefined. (Actually these
4909 changes were later undone, so we might very well be binary
4910 compatible with 0.7.7 after all, but leaving the version number
4911 incremented seemed like the simplest and most conservative
4914 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4915 * An alpha-quality port to the parisc architecture running Linux,
4916 based on the old CMUCL backend, has been made. This, even more so
4917 than the other backends, should be considered still a work in
4918 progress; known problems include that the Linux kernel in 64-bit
4919 mode does not propagate the correct sigcontext structure to
4920 userspace, and consequently SBCL on a parisc64 kernel will not
4922 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4923 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4924 suppressed.) Also now that the compiler is looking at declarations
4925 in the environment, it checks optimization declarations as well,
4926 and suppresses inlining when (> DEBUG SPEED).
4927 * More fixes have been made to treatment of floating point exception
4928 treatment and other Unix signals. In particular, floating point
4929 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4930 * The detection and handling of control stack exhaustion (infinite
4931 or very deeply nested recursion) has changed. Stack exhaustion
4932 detection is now done by write-protecting pages at the OS level
4933 and applies at all optimization settings; when found, a
4934 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4935 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4936 be caught using IGNORE-ERRORS.
4937 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4938 correctly when transforming recursive LABELS functions to LETs.
4939 (thanks to Alexey Dejneka)
4940 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4941 that are names of constants or global variables.
4942 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4943 alien routines with docstrings.
4944 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4945 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4947 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4948 (thanks to Eric Marsden)
4949 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4950 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4951 * Bug fix: The SPARC backend can now compile functions involving
4952 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4953 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4954 to a functions expecting a PATHNAME-DESIGNATOR.
4955 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4956 lambda lists. (thanks to Alexey Dejneka)
4957 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4958 functions so that EXPORTing the name of the class doesn't cause
4959 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4960 to Antonio Martinez for reporting this)
4961 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4962 constant-folded without failing an assertion. (thanks to Einar
4963 Floystad Dorum for reporting this)
4964 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4965 types are now dealt with more correctly by the compiler.
4966 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4967 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4968 behaviour analogous to RENAME-FILE. This puts its behaviour more
4969 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4971 * The fasl file version number has changed again. (because of the
4972 bug fix involving the names of PCL MAKE-INSTANCE functions)
4974 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4975 * bug fix: Floating point exceptions are treated much more
4976 consistently on the x86/Linux and PPC/Linux platforms.
4977 * Array initialization with :INITIAL-ELEMENT is now much faster for
4978 cases when the compiler cannot open code the array creation, but
4979 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4980 array accesses have also seen a speed increase.
4981 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4982 specified. (This was at the root of some bad interactions between
4983 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4985 * bug fix: Internal error arguments for undefined functions are now
4986 computed correctly on the PPC/Linux platform.
4987 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4988 Raymond Toy's patch for CMU CL)
4989 * Support for the Solaris 9 operating environment has been included
4990 (thanks to Daniel Merritt)
4991 * A very ugly but hopefully complete draft of the missing FFI chapter
4992 of the manual has been created by reformatting the corresponding
4993 CMU CL manual chapter into (currently very ugly and incoherent)
4994 DocBook and bringing it up to date for SBCL behavior. Thus, the
4995 manual is now essentially complete, at least by my extreme
4996 once-and-only-once standards, whereby it's acceptable to refer to
4997 the doc strings of SB-EXT functions as the primary documentation.
4998 * The fasl file version number has changed again, due to cleanup of
4999 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5000 is no longer a static symbol.)
5002 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5003 * SBCL now builds with OpenMCL (version 0.12) as the
5004 cross-compilation host; also, more progress has been made toward
5005 bootstrapping under CLISP.
5006 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5008 * bug 158 fixed: The compiler can now deal with integer loop
5009 increments different from 1; fixing this turned out also to fix
5011 * bug 169 fixed: no more bogus warnings about using lexical bindings
5012 despite the presence of perfectly good SPECIAL declarations (thanks
5013 to David Lichteblau)
5014 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5015 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5016 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5018 * bug 180 fixed: Method combination specifications no longer ignore
5019 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5020 * bug fix: Structure type predicate functions now check their argument
5021 count as they should.
5022 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5023 correctly. (thanks to Pierre Mai)
5024 * minor incompatible change: The --noprogrammer option is deprecated
5025 in favor of the new --disable-debugger option, which is very similar.
5026 (The major difference is that it takes effect at a slightly different
5027 time at startup, causing handling of errors in --sysinit and
5028 --userinit files will be affected differently.) The
5029 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5030 been added to allow this functionality to be controlled from ordinary
5031 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5032 maintainers, who might want to run non-interactive scripts to
5033 build SBCL cores which will later be used interactively.)
5034 * minor incompatible change: The LOAD function no longer, when given
5035 a wild pathname to load, loads all files matching that pathname.
5036 Instead, an error of type FILE-ERROR is signalled.
5038 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5039 * bug 147 fixed: The compiler preserves its block link/count
5040 invariants more correctly now so that it doesn't crash. (thanks
5042 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5044 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5045 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5046 no-value-for-this-character as NIL (as specified by ANSI).
5047 * HOST-NAMESTRING on physical pathnames now returns a string that is
5048 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5049 (thanks to Christophe Rhodes)
5050 * The Alpha port handles icache flushing more correctly. (thanks to
5052 * More progress has been made toward bootstrapping under CLISP. (thanks
5053 to Christophe Rhodes)
5054 * The fasl file format has changed again, because dynamic loading
5055 on OpenBSD (which has non-ELF object files) motivated some cleanups
5056 in the way that foreign symbols are transformed and passed around.
5057 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5058 is no longer treated as whitespace by the reader, but instead as
5059 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5060 |A
\7fB|, instead of A as it used to.
5062 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5063 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5064 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5065 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5066 this as of 0.7.1.45, but was left out of the previous news section
5067 (thanks to Dan Barlow)
5068 * SBCL now runs on the Solaris operating system on SPARC architectures
5069 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5070 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5071 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5072 * SPARC backend cleanups, allowing builds of cores optimized for V8
5073 and V9 SPARCS, and also emission of code targeted to a particular
5074 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5076 * SBCL is closer to bootstrapping under CLISP, thanks to various
5077 fixes by Christophe Rhodes.
5078 * The fasl file format has changed again, to allow the compiler's
5079 INFO database to support symbol macros.
5080 * The user manual (in doc/) is formatted into HTML more nicely.
5081 (thanks to coreythomas)
5082 * The system is smarter about SUBTYPEP relationships, especially
5083 those involving NOT types (including types such as ATOM which are
5084 represented internally using NOT types). Thus SUBTYPEP is less
5085 likely to return (VALUES NIL NIL) in general, and in particular
5086 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5088 * The fasl file format has changed again, because the internal
5089 representation of types now includes a new slot to support the new
5090 SUBTYPEP-of-NOT-types logic.
5091 * (not a change in the main branch of SBCL, but a related prototype
5092 which can hopefully be merged into the main branch of SBCL in the
5093 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5094 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5095 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5096 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5097 dispatch macro character combinations. (thanks to Alexey Dejneka)
5098 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5099 that superficially look like logical namestrings correctly.
5100 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5102 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5103 default supplied-p) for &optional and &key arguments. (thanks to
5106 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5107 * incompatible change: The compiler is now less aggressive about
5108 tail call optimization, doing it only when (> SPACE DEBUG) or
5109 (> SPEED DEBUG). (This is an incompatible change because there are
5110 programs which relied on the old CMU-CL-style behavior to optimize
5111 away their unbounded recursion which will now die of stack overflow.)
5112 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5113 for non-GENCGC systems has been increased to 20M (since that
5114 seems much closer to the likely performance optimum for modern
5115 systems than the old 4M value was)
5116 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5117 and *DEBUG-PRINT-LEVEL*
5118 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5119 of CMU CL's support for SPARC, and various endianness and other
5120 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5121 * new syntactic sugar for the Unix command line: --load foo.bar is now
5122 an alternate notation for --eval '(load "foo.bar")'.
5124 ** The system now detects stack overflow and handles it gracefully,
5125 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5126 optimization settings. (This is a good thing in general, and
5127 its introduction in this version should be particularly timely
5128 for anyone whose code fails because of suppression of tail
5130 ** The system now hunts for the C variable "environ" in a more
5131 devious way, to avoid segfaults when the C library version differs
5132 between compile time and run time. (thanks to Christophe Rhodes)
5133 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5134 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5135 ** The compiler no longer issues bogus style warnings for undefined
5136 classes in the same source file as the DEFCLASSes which defined
5137 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5139 ** fixes in CONDITION class precedence list for undefined function
5140 errors (thanks to Alexei Dejneka)
5141 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5142 correctly. (thanks to Dan Barlow)
5143 ** portability fixes aiming at bootstrapping under CLISP (thanks
5144 to Dave McDonald and Christophe Rhodes)
5145 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5146 ** fixes in type translation and and type inference (thanks to
5148 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5149 ** various fixes in the new ports (thanks to Dan Barlow)
5150 * several changes related to debugging:
5151 ** suppression of tail recursion, as noted above
5152 ** stack overflow detection, as noted above
5153 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5154 is now the default. (For some time encapsulation has been more
5155 reliable than the breakpoint-based :ENCAPSULATE NIL
5156 implementation, at least on X86 systems; and I just noticed that
5157 encapsulation also seems closer to the spirit of the ANSI
5160 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5162 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5163 up properly again. (There was a packaging bug in 0.7.0 which
5164 left their definitions in SB-SYS::LOAD-FOREIGN and
5165 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5166 vital for most things which interface to C-level interfaces,
5167 like extensions working with sockets or databases or
5168 Perl-compatible regexes or whatever, and the need to fix
5169 this bug is the main reason that 0.7.1 was released so
5171 ** DEFGENERIC is now choosier about the methods it redefines, so that
5172 reLOADing a previously-LOADed file containing DEFGENERICs does
5173 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5174 cycle now works as it should. (thanks to Alexey Dejneka)
5175 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5176 fixed by Christophe Rhodes. (He actually submitted this patch
5177 months ago, and I delayed until after 0.7.0.)
5178 ** Bug 111 (internal compiler confusion about runtime checks on
5179 FUNCTION types) was fixed by Alexey Dejneka.
5180 * Some internal cleanups (getting rid of variables which aren't
5181 needed now that the byte interpreter is gone) caused the fasl
5182 file format number to change again.
5184 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5185 * major incompatible change: The default fasl file extension, i.e. the
5186 default extension for files produced by COMPILE-FILE, has changed
5187 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5189 ** There are many changes in the implementation of the compiler.
5190 SBCL is now essentially a compiler-only implementation of ANSI
5191 Common Lisp. EVAL still "interprets" a few special cases, but
5192 almost all the interesting cases are handled by creating
5193 a LAMBDA expression, calling COMPILE on it, then calling
5194 FUNCALL on the result.
5195 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5196 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5197 Since the code is newer, there might still be some new bugs
5198 (though not as many as before Martin Atzmueller's fixes:-). But
5199 the new code is substantially simpler and clearer, and hopefully
5200 any remaining bugs will be simpler, less fundamental, and more
5201 fixable then the bugs in the old code.
5202 ** The revised compiler is still a little unsteady on its feet.
5204 *** The debugging information it produces (particularly the names
5205 of FUNCTION objects) is sometimes much less useful than what
5206 the old compiler produced.
5207 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5208 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5209 within a MACROLET) has been temporarily weakened.
5210 ** There are new compiler optimizations for various functions:
5211 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5212 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5213 *** the math functions TRUNCATE, FLOOR, and CEILING
5214 *** the function-of-all-trades COERCE
5215 Mostly these should be transparent, but there's one
5216 potentially-annoying problem (bug 117): when the compiler
5217 inline-expands a function and does type analysis on the result,
5218 it can create control paths which have type mismatches, and
5219 when it can't prove that those control paths aren't taken,
5220 it will issue WARNINGs about the type mismatches. This is
5221 a particular problem in practice for the new sequence functions.
5222 It's not clear how this should be fixed, and for now, a
5223 workaround is given in the entry for 117 in the BUGS file.
5224 ** (Because of the interaction between the two previous items --
5225 occasional inlining problems and new inline expansions -- some
5226 of the new sequence function optimizations won't really kick in
5227 completely until debugging information, and then inlining, are
5228 straightened out in some future version.)
5229 * minor incompatible changes:
5230 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5231 DIRECTORY no longer implicitly promotes NIL slots of its
5232 pathname argument to :WILD. In particular, when you ask for the
5233 contents of a directory (which you used to be able to do without
5234 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5235 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5236 ** changes in behavior that ANSI explicitly defines to be
5237 implementation dependent:
5238 *** The new compiler-only implementation still conforms with ANSI,
5239 but acts a little different than before. Besides the obvious
5240 changes in performance tradeoffs (that the cost per form passed
5241 to EVAL has gone up, and the cost per form executed by EVAL
5242 has gone down), the behavior of the system changes a little
5243 because there are no longer any interpreted function objects.
5244 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5245 e.g. doing COMPILE on the output of interactive DEFUN is
5247 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5249 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5250 has changed from (:CL) to NIL.
5251 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5252 e.g. #\Newline and #\Tab, don't have names specified in the
5253 ANSI Common Lisp standard, is now based on their ASCII symbolic
5254 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5255 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5256 are no longer used for output.
5257 ** changes in internal implementation constants:
5258 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5259 4 million. (If your application spends a lot of time GCing and
5260 you have a lot of RAM, you might want to experiment with
5261 increasing it even more.)
5262 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5263 However, almost all old code should still continue to work without
5264 immediate update, as SB-C-CALL is now a (deprecated) nickname
5266 ** Old operator names in the style DEF-FOO are now deprecated in
5267 favor of new corresponding names DEFINE-FOO, for consistency with
5268 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5269 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5270 internal symbols, but a few supported extensions like
5271 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5272 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5273 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5274 etc. as you get deeper into recursive calls to the debugger
5275 command loop, instead of the old "5]", "5]]", "5]]]"
5276 sequence. (I was motivated to do this when squabbles between
5277 ILISP and SBCL left me very deeply nested in the debugger. In the
5278 short term, this change will probably provoke more ILISP/SBCL
5279 squabbles, but hopefully it will be an improvement in the long run.)
5280 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5281 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5282 function, since declaiming return types involving aliens is
5283 (1) annoyingly messy to do by hand and (2) vital to efficient
5284 compilation of code which calls such functions.
5285 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5286 longer reexported by the SB-EXT package. They're solely useful
5287 for alien code, so it seems more logical that you should get
5288 them from the SB-ALIEN package, not in SB-EXT.
5289 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5290 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5291 features. Instead, the code that they used to control is always
5292 built into the system.
5293 * many other bug fixes
5294 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5295 advantage of the new EVAL-WHEN stuff and to clean them up in
5296 general, and they are now more ANSI-compliant in a number of
5297 ways. Martin Atzmueller is responsible for a lot of this.
5298 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5300 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5301 *** correct ERROR type for various file operations
5302 *** some fixes for Lisp streams
5303 *** DEFMETHOD syntax checking
5304 *** changing old weird representation of debug information as
5305 strings (which, among their other deficiencies, don't transform
5306 correctly when you rename packages, and don't change their
5307 print representation when you change things like *PACKAGE*
5308 and *PRINT-LENGTH*) to symbols and lists of symbols
5309 He also made several improvements and fixed several bugs in DESCRIBE.
5310 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5312 *** misbehavior of WRITE-STRING/WRITE-LINE
5313 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5314 and several other LOOP problems as well
5315 *** DIRECTORY when similar filenames are present
5316 *** DEFGENERIC with :METHOD options
5317 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5318 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5319 *** argument ordering in FIND with :TEST option
5320 *** mishandled package designator argument in APROPOS-LIST
5321 *** various problems in the backquote readmacro
5322 *** a bug in APROPOS
5323 *** probably some others that I'm not describing very well here,
5324 since the CVS log documents them by reference to sbcl-devel
5325 messages, and the SourceForge archives aren't working well.:-(
5326 ** Dan Barlow improved the Alpha port (and is making progress on the
5327 PPC port, for those of you who think different).
5328 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5329 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5330 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5331 continues to work on the SPARC port (for those of you in a position
5332 to look down upon our little PC-compatible boxes from a great height).
5333 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5334 and uses that copy, rather than the current dynamic value, when
5335 it's trying to decide whether to truncate output. Thus e.g.
5336 (let ((*print-lines* 50))
5337 (pprint-logical-block (stream nil)
5339 (let ((*print-lines* 8))
5340 (print (aref possiblybigthings i) stream)))))
5341 should now truncate the logical block only at 50 lines, instead of
5342 often truncating it at 8 lines, as it did before.
5343 * The doc/cmucl/ directory, containing old CMU CL documentation
5344 from the time of the fork, is no longer part of the base system.
5345 SourceForge has shut down its anonymous FTP service, and with it
5346 my original plan for distributing the old CMU CL documentation
5347 there. For now, if you need these files you can download an old
5348 SBCL source release and extract them from it.
5349 * The fasl file version number changed again, for dozens of reasons,
5350 some of which are apparent above.
5352 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5353 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5354 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5355 patch, so that DISASSEMBLE output is much nicer.
5356 * The code in the SB-PROFILE package now seems reasonably stable.
5357 I still haven't decided what the final interface should look like
5358 (I'd like PROFILE to interact cleanly with TRACE, since both
5359 facilities use function encapsulation) but if you have a need
5360 for profiling now, you can probably use it successfully with
5361 the current CMU-CL-style interface.
5362 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5363 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5364 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5365 link now returns the dangling link itself, and for similar
5366 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5367 link itself. (In these cases the old code signalled an error and
5368 looped endlessly, respectively.) Thus, DIRECTORY now works even
5369 in the presence of dangling and cyclic symbolic links.
5370 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5371 is now a supported extension again, since the consensus on
5372 sbcl-devel was that it can be useful for ordinary development
5373 work, not just for debugging SBCL itself.
5374 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5375 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5376 that currently-defined functions might be redefined later with
5377 different return types.
5378 * Hash tables can be printed readably, as inspired by CMU CL code
5379 of Eric Marsden and SBCL code of Martin Atzmueller.
5380 * better error handling in CLOS method combination, thanks to
5381 Martin Atzmueller porting Pierre Mai's CMU CL patches
5382 * more overflow fixes for >16Mbyte I/O buffers
5383 * A bug in READ has been fixed, so that now a single Ctrl-D
5384 character suffices to cause end-of-file on character streams.
5385 In particular, now you only need one Ctrl-D at the command
5386 line (not two) to exit SBCL.
5387 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5389 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5390 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5391 does the right thing.
5392 * The implementation of some type tests, especially for CONDITION
5393 types, is now tidier and maybe faster, due to CMU CL code
5394 originally by Douglas Crosher, ported by Martin Atzmueller.
5395 * Some math functions have been fixed, and there are new
5396 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5397 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5398 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5399 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5400 likely to be built into sbcl-0.7.0.)
5401 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5402 CL, ported to SBCL by Martin Atzmueller)
5403 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5404 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5405 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5406 * There's a new slam.sh hack to shorten the edit/compile/debug
5407 cycle for low-level changes to SBCL itself, and a new
5408 :SB-AFTER-XC-CORE target feature to control the generation of
5409 the after-xc.core file needed by slam.sh.
5410 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5411 COMPILE-FILE is no longer supported, so that now every function
5412 gets an entry point, so that block compilation looks a little
5413 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5414 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5415 returns the number of bytes consed since the system started,
5416 rather than the number consed since the first time the function
5417 was called. (The new definition parallels ANSI functions like
5418 CL:GET-INTERNAL-RUN-TIME.)
5419 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5420 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5421 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5422 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5423 * Fasl file version numbers are now independent of the target CPU,
5424 since historically most system changes which required version
5425 number changes have affected all CPUs equally. Similarly,
5426 the byte fasl file version is now equal to the ordinary
5429 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5430 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5431 is no longer recognized. I apologize for this, because it was
5432 listed in SB-EXT as a supported extension, but I found that
5433 its existing behavior was poorly specified, as well as incorrectly
5434 specified, and it looked like too much of a mess to straighten it
5435 out. I have enough on my hands trying to get ANSI stuff to work..
5436 * many patches ported from CMU CL by Martin Atzmueller, with
5437 half a dozen bug fixes in pretty-printing and the debugger, and
5438 half a dozen others elsewhere
5439 * fixed bug 13: Floating point infinities are now supported again.
5440 They might still be a little bit flaky, but thanks to bug reports
5441 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5442 as flaky as they were.
5443 * The --noprogrammer command line option is now supported. (Its
5444 behavior is slightly different in detail from what the old man
5445 page claimed it would do, but it's still appropriate under the
5446 same circumstances that the man page talks about.)
5447 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5448 are now supported, and enabled by default. Thus, the compiler can
5449 handle many floating point and complex operations much less
5450 inefficiently. (Thus e.g. you can implement a complex FFT
5452 * The compiler now detects type mismatches between DECLAIM FTYPE
5453 and DEFUN better, and implements CHECK-TYPE more correctly, and
5454 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5455 thanks to patches from Martin Atzmueller.
5456 * various fixes to make the cross-compiler more portable to
5457 ANSI-conforming-but-different cross-compilation hosts (notably
5458 Lispworks for Windows, following bug reports from Arthur Lemmens)
5459 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5460 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5461 fixed thanks to Pierre Mai's CMU CL patches.
5462 * fixes to keep the system from overflowing internal counters when
5463 it tries to use i/o buffers larger than 16M bytes
5464 * fixed bug 45a: Various internal functions required to support
5465 complex special functions have been merged from CMU CL sources.
5466 (When I was first setting up SBCL, I misunderstood a compile-time
5467 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5468 * improved support for type intersection and union, fixing bug 12
5469 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5470 more obscure bugs as well
5471 * some steps toward byte-compiling non-performance-critical
5472 parts of the system, courtesy of patches from Martin Atzmueller
5473 * Christophe Rhodes has made some debian packages of sbcl at
5474 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5475 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5476 stable, but are nonetheless usable. When he's ready, I'd be happy
5477 to add them to the SourceForge "File Releases" section. (And if
5478 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5479 * new fasl file format version number (because of changes in
5480 internal representation of (OR ..) types to accommodate the new
5481 support for (AND ..) types, among other things)
5483 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5484 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5486 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5488 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5489 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5490 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5491 * DESCRIBE now works on structure objects again.
5492 * Most function call argument type mismatches are now handled as
5493 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5494 know whether the function will be redefined before the call is
5495 executed. (The compiler could flag local calls with full WARNINGs,
5496 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5497 it doesn't keep track of enough information to know whether calls
5498 are local in this sense.)
5499 * Compiler output is now more verbose, with messages truncated
5500 later than before. (There should be some supported way for users
5501 to override the default verbosity, but I haven't decided how to
5502 provide it yet, so this behavior is still controlled by the internal
5503 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5504 src/compiler/ir1util.lisp.)
5505 * Fasl file format version numbers have increased again, because
5506 support for the Gray streams extension changes the layout of the
5507 system's STREAM objects.
5508 * The Gray subclassable streams extension now works, thanks to a
5509 patch from Martin Atzmueller.
5510 * The full LOAD-FOREIGN extension (not just the primitive
5511 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5512 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5513 but like most other programs, it defaults to copying the Unix
5514 environment from the original process instead of starting the
5515 new process in an empty environment.
5516 * Extensions which manipulate the Unix environment now support
5517 an :ENVIRONMENT keyword option which doesn't smash case or
5518 do other bad things. The CMU-CL-style :ENV option is retained
5519 for porting convenience.
5520 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5521 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5523 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5525 * A patch from Martin Atzmueller seems to have solved the SIGINT
5526 problem, and as far as we know, signal-handling now works cleanly.
5527 (If you find any new bugs, please report them!)
5528 * The system no longer defaults Lisp source file names to types
5529 ".l", ".cl", or ".lsp", but only to ".lisp".
5530 * The compiler no longer uses special default file extensions for
5531 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5532 seems to expect a single default extension for all compiled code,
5533 and there's no compelling reason to try to stretch the standard
5534 to allow two different extensions.) Instead, byte-compiled files
5535 default to the same extension as native-compiled files.
5536 * Fasl file format version numbers have increased again, because
5537 a rearrangement of internal implementation packages made some
5538 dumped symbols in old fasl files unreadable in new cores.
5539 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5540 many fewer weird special cases.
5541 * Bug #17 (differing COMPILE-FILE behavior between logical and
5542 physical pathnames) has been fixed, and some related misbehavior too,
5543 thanks to a patch from Martin Atzmueller.
5544 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5545 by Tim Moore, ported to SBCL by Martin Atzmueller.
5546 * Martin Atzmueller fixed several filesystem-related problems,
5547 including bug #36, in part by porting CMU CL patches, which were
5548 written in part by Paul Werkowski.
5549 * More compiler warnings in src/runtime/ are gone, thanks to
5550 more patches from Martin Atzmueller.
5551 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5554 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5556 * DESCRIBE now works on CONDITION objects.
5557 * The debugger now handles errors which arise when trying to print
5558 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5560 * The build system now uses an additional file, customize-target-features.lisp,
5561 to allow local modifications to the target *FEATURES* list. (The point of
5562 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5563 debugging features enabled, without having to worry about propagating it
5564 into everyone's system when I do a "cvs update".) When no
5565 customize-target-features.lisp file exists, the target *FEATURES* list
5566 should be constructed the same way as before.
5567 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5568 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5569 warn about behavior which is undefined under the ANSI spec. Note: This
5570 is specified by ANSI, but it's not very popular with programmers.
5571 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5572 macro in the SBCL sources for an example of a workaround which you
5573 might use to make portable ANSI-standard code which does what you want.
5574 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5575 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5576 when it's used as a non-toplevel form. (This is required in order
5577 to implement the DEFCONSTANT-EQX macro.)
5578 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5579 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5580 funny things, due to bugs in the implementation of EVAL-WHEN
5581 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5582 non-toplevel DEFCONSTANTs are uncommon.)
5583 * The core file version number and fasl file version number have been
5584 incremented, because the old noncompliant DEFCONSTANT behavior involved
5585 calling functions which no longer exist, and because I also took the
5586 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5587 * fixed bug 1 (error handling before read-eval-print loop starts), and
5588 redid debugger restarts and related debugger commands somewhat while
5590 ** The QUIT debugger command is gone, since it did something
5591 rather different than the SB-EXT:QUIT command, and since it never
5592 worked properly outside the main toplevel read/eval/print loop.
5593 Invoking the new TOPLEVEL restart provides the same functionality.
5594 ** The GO debugger command is also gone, since you can just invoke
5595 the CONTINUE restart directly instead.
5596 ** The TOP debugger command is also gone, since it's redundant with the
5597 FRAME 0 command, and since it interfered with abbreviations for the
5599 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5601 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5602 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5603 some porting work by Martin Atzmueller)
5604 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5605 with a boatload of patches which he ported to SBCL. Now that those
5607 ** The system tries to make sure that its low-priority messages
5608 are prefixed by semicolons, to help people who like to use
5609 syntax highlighting in their ILISP buffer. (This patch
5610 was originally due to Raymond Toy.)
5611 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5612 patches originally written by Raymond Toy.
5613 ** The compiler understands coercion between single-value and
5614 multiple-VALUES type expressions better, getting rid of some very
5615 weird behavior, thanks to patches originally by Robert MacLachlan
5616 and Douglas Crosher.
5617 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5618 lambda lists, thanks to a patch originally by Pierre Mai.
5619 ** The system no longer bogusly warns about "abbreviated type
5621 ** The compiler gets less confused by inlining and RETURN-FROM,
5622 thanks to some patches originally by Tim Moore.
5623 ** The system no longer hangs when dumping circular lists to fasl
5624 files, thanks to a patch originally from Douglas Crosher.
5625 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5626 undefined function error.
5627 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5628 in structure slot initforms) for now, documented workaround instead:-|
5629 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5630 * fixed bug 5: added stubs for various Gray stream functions called
5631 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5632 installed, at least appropriate type errors are generated
5633 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5634 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5635 consistently in DEFMETHOD forms.
5636 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5637 it doesn't seem to affect SBCL after all
5638 * The C runtime system now builds with better optimization and many
5639 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5641 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5643 * The system is now under CVS at SourceForge (instead of the
5644 CVS repository on my home machine).
5645 * The new signal handling code has been tweaked to treat register
5646 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5647 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5648 downstream, e.g. in debug-int.lisp, has implicit dependencies
5649 on the unsignedness of integer representation of machine words,
5650 and that caused the system to bomb out with infinite regress
5651 when trying to recover from type errors involving signed values,
5652 e.g. (BUTLAST '(1 2 3) -1).)
5653 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5654 (This was one of the bugs Peter Van Eynde reported back in July.)
5655 * The system now uses code inspired by Colin Walters' O(N)
5656 implementation of MAP (from the cmucl-imp@cons.org mailing
5657 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5658 inline the MAP operation, and there is more than one
5659 sequence argument to the MAP call (so that it can't just
5660 do ETYPECASE once and for all based on the type of the
5661 single sequence argument). (The old non-inline implementation
5662 of the general M-argument sequence-of-length-N case required
5663 O(M*N*N) time when any of the sequence arguments were LISTs.)
5664 * The QUIT :UNIX-CODE keyword argument has been renamed to
5665 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5666 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5668 * Raymond Wiker's patches to port dynamic loading from Linux to
5669 FreeBSD have been added.
5670 * The BUGS file is now more nearly up to date, thanks in large part
5671 to Martin Atzmueller's review of it.
5672 * The debugger now flushes standard output streams before it begins
5673 its output ("debugger invoked" and so forth).
5674 * The core version number and fasl file version number have both
5675 been incremented, because of incompatible changes in the layout
5677 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5678 used to not be called for a saved Lisp image.)
5679 * Martin Atzmueller's version of a patch to fix a compiler crash,
5680 as posted on sbcl-devel 13 September 2000, has been installed.
5681 * Instead of installing Martin Atzmueller's patch for the
5682 compiler transform for SUBSEQ, I deleted the compiler transform,
5683 and transforms for some similar consing operations.
5684 * A bug in signal handling which kept TRACE from working on OpenBSD
5686 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5687 away by constant folding
5688 * The system now defines its address space constants in one place
5689 (in the Lisp sources), and propagates them automatically elsewhere
5690 (through GENESIS and the sbcl.h file). Therefore, patching the
5691 address map is less unnecessarily tedious and error-prone. The
5692 Lisp names of address space constants have also been systematized.
5693 * CVS tags like dollar-Header-dollar have been removed from
5694 the sources, because they have never saved me trouble and
5695 they've been source of trouble working with patches and other
5696 diff-related operations.
5697 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5698 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5700 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5702 * The system has been ported to OpenBSD.
5703 * The system now compiles with a simple "sh make.sh" on the systems
5704 that it's supported on. I.e., now you no longer need to tweak
5705 text in the target-features.lisp-expr and symlinks in src/runtime/
5706 by hand, the make.sh takes care of it for you.
5707 * The system is no longer so grossly inefficient when compiling code
5708 involving vectors implemented as general (not simple) vectors (VECTOR T),
5709 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5710 which dares to use the various sequence functions on non-simple
5711 vectors, takes less of a performance hit.
5712 * There is now a primitive type predicate VECTOR-T-P
5713 to test for the (VECTOR T) type, so that e.g.
5714 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5715 can now be compiled with some semblance of efficiency. (The old code
5716 turned the type declaration into a full call to %TYPEP at runtime!)
5717 * AREF on (VECTOR T) is still not fast, since it's still compiled
5718 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5719 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5720 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5721 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5722 without making full calls to SUBTYPEP at runtime.
5723 (Some analogous efficiency issues for non-simple vectors specialized to
5724 element types other than T, or for non-simple multidimensional arrays,
5725 have not been addressed. They could almost certainly be handled the
5726 same way if anyone is motivated to do so.)
5727 * The changes in array handling break binary compatibility, so
5728 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5729 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5730 instead of (VALUES T T).
5731 * By following the instructions that Dan Barlow posted to sbcl-devel
5732 on 2 July 2000, I was able to enable primitive dynamic object
5733 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5734 functionality is not implemented (since it calls ld to resolve
5735 library references automatically, requiring RUN-PROGRAM for its
5736 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5737 try to resolve library references) is now supported.
5738 * The system now flushes the standard output streams when it terminates,
5739 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5740 them at several other probably-convenient times, e.g. in each pass of
5741 the toplevel read-eval-print loop, and after evaluating a form given
5742 as an "--eval" command-line option. (These changes were motivated by a
5743 discussion of stream flushing issues on cmucl-imp in August 2000.)
5744 * The source transform for TYPEP of array types no longer assumes
5745 that an array whose element type is a not-yet-defined type
5746 is implemented as an array of T, but instead punts, so that the
5747 type will be interpreted at runtime.
5748 * There is now some support for cross-compiling in make.sh: each of
5749 the phases of make.sh has its own script. (This should be transparent
5750 to people doing ordinary, non-cross-compile builds.)
5751 * Since my laptop doesn't have hundreds of megabytes of memory like
5752 my desktop machine, I became more motivated to do some items on
5753 my to-do list in order to reduce the size of the system a little:
5754 ** Arrange for various needed-only-at-cold-init things to be
5755 uninterned after cold init. To support this, those things have
5756 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5757 symbols with such names are now uninterned after cold init).
5758 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5759 fasl files for cold load.
5760 ** Remove the old compiler structure pooling code (which used to
5761 be conditional on the target feature :SB-ALLOC) completely.
5762 ** Redo the representation of some data in cold init to be more compact.
5763 (I also looked into supporting byte compiled code at bootstrap time,
5764 which would probably reduce the size of the system a lot, but that
5765 looked too complicated, so I punted for now.)
5766 * The maximum signal nesting depth in the src/runtime/ support code has
5767 been reduced from 4096 to 256. (I don't know any reason for the very
5768 large old value. If the new smaller value turns out to break something,
5769 I'll probably just bump it back up.)
5770 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5772 * Many, many bugs reported by Peter Van Eynde have been added to
5773 the BUGS list; some have even been fixed.
5774 * While enabling dynamic object file loading, I tried to make the
5775 code easier to understand, renaming various functions and variables
5776 with less ambiguous names, and changing some function calling
5777 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5778 * While trying to figure out how to do the OpenBSD port, I tried to
5779 clean up some of the code in src/runtime/. In particular, I dropped
5780 support for non-POSIX signal handling, added various comments,
5781 tweaked the code to reduce the number of compilation warnings, and
5782 renamed some files to increase consistency.
5783 * To support the new automatic configuration functionality in make.sh,
5784 the source file target-features.lisp-expr has been replaced with the
5785 source file base-target-features.lisp-expr and the machine-generated
5786 file local-target-features.lisp-expr.
5787 * fixed a stupid quoting error in make.sh so that using CMU CL
5788 "lisp -batch" as cross-compilation host works again
5790 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5792 * DESCRIBE no longer tries to call itself recursively to describe
5793 bound/fbound values, so that it no longer fails on symbols which are
5794 bound to themselves (like keywords, T, and NIL).
5795 * DESCRIBE now works on generic functions.
5796 * The printer now prints less-screwed-up representations of closures
5797 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5798 * A private symbol is used instead of the :EMPTY keyword previously
5799 used to mark empty slots in hash tables. Thus
5800 (DEFVAR *HT* (MAKE-HASH-TABLE))
5801 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5802 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5803 now does what ANSI says that it should. (You can still get
5804 similar noncompliant behavior if bang on the hash table
5805 implementation with all the symbols you get back from
5806 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5807 This breaks binary compatibility, since tests for equality to
5808 :EMPTY are wired into things like the macroexpansion of
5809 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5811 * There's now a minimal placeholder implementation for CL:STEP,
5812 as required by ANSI.
5813 * An obscure bug in the interaction of the normal compiler, the byte
5814 compiler, inlining, and structure predicates has been patched
5815 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5816 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5818 * Missing ordinary arguments in a macro call are now detected even
5819 when the macro lambda list contains &KEY or &REST.
5820 * The debugger no longer complains about encountering the top of the
5821 stack when you type "FRAME 0" to explicitly instruct it to go to
5822 the top of the stack. And it now prints the frame you request even
5823 if it's the current frame (instead of saying "You are here.").
5824 * As specified by ANSI, the system now always prints keywords
5825 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5827 * The default initial SIZE of HASH-TABLEs is now smaller.
5828 * Type information from CLOS class dispatch is now propagated
5829 into DEFMETHOD bodies, so that e.g.
5830 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5832 is now basically equivalent to
5833 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5834 (DECLARE (TYPE SINGLE-FLOAT X))
5836 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5837 operation, without having to do run-time type dispatch.
5838 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5839 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5840 * Since I don't seem to be making big file reorganizations very often
5841 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5842 is overflowing my ability to conveniently back them up), I've finally
5843 checked the system into CVS. (The CVS repository is on my home system,
5844 not at SourceForge -- putting it on SourceForge might come later.)
5845 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5846 high-level GC-NOTIFY-FOO functions send their output. (There's
5847 still very little control of where low-level verbose GC functions
5848 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5849 less than it used to -- the GC-NOTIFY-FOO functions are now under
5850 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5851 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5852 in only one place in the source code, and propagates it automatically
5853 everywhere that it's needed. Thus e.g. when I bump the version from
5854 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5855 * The C source files now include boilerplate legalese and documentation
5856 at the head of each file (just as the Lisp source files already did).
5857 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5858 to his page will be replaced with a link to his new CLiki service.
5860 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5862 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5863 * The build process now looks for GNU make under the default name "gmake",
5864 instead of "make" as it used to. If GNU make is not available as "gmake"
5865 on your system, you can change this default behavior by setting the
5866 GNUMAKE environment variable.
5867 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5868 can build without error under CMU CL.
5870 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5872 * There is now a partial SBCL user manual (with some new text and some
5873 text cribbed from the CMU CL manual).
5874 * The beginnings of a profiler have been added (starting with the
5875 CMU CL profiler and simplifying and cleaning up). Eventually the
5876 main interface should be through the TRACE macro, but for now,
5877 it's still accessed through vaguely CMU-CL-style functions and macros
5878 exported from the package SB-PROFILE.
5879 * Some problems left over from porting CMU CL to the new
5880 cross-compilation bootstrap process have been cleaned up:
5881 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5882 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5883 part when getting rid of the compiler *BACKEND* stuff.)
5884 ** The value of *NULL-TYPE* was screwed up, because it was
5885 being initialized before the type system knew the final
5886 definition of the 'NULL type. This screwed up several key
5887 optimizations in the compiler, causing inefficiency in all sorts
5888 of places. (I found it because I wanted to understand why
5889 GET-INTERNAL-RUN-TIME was consing.)
5890 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5891 PROCLAIM FTYPE information. Unfortunately this broke binary
5892 compatibility again, since now the forms output by DEFGENERIC
5893 to refer to functions which didn't exist in 0.6.3.
5894 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5895 can use the new (as of 0.6.3) transform for SOME into MAP into
5897 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5898 values to (INTEGER 0 1000000), so that the time code will no longer
5899 occasionally get blown up by Linux returning 1000000 microseconds
5900 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5901 its output conform to the ANSI spec. (Alas, this makes its output
5902 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5903 * A full call to MAP NIL with a single sequence argument no longer conses.
5904 * fixes to problems pointed out by Martin Atzmueller:
5905 * The manual page no longer talks about multiprocessing as though
5906 it were currently supported.
5907 * The ILISP support patches have been removed from the distribution,
5908 because as of version 5.10.1, ILISP now supports SBCL without us
5909 having to maintain patches.
5910 * added a modified version of Raymond Toy's recent CMU CL patch for
5911 EQUALP comparison of HASH-TABLE
5913 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5915 * The system still can't cross-compile itself with
5916 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5917 entails), but at least it can compile more of itself that way
5918 than it used to be able to, and various buglets which were uncovered
5919 by trying to cross-compile itself that way have now been fixed.
5920 * This release breaks binary compatibility again. This time
5921 at least I've incremented the FASL file format version to 2, so that the
5922 problem can be detected reliably instead of just causing weird errors.
5923 * various new style warnings:
5924 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5925 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5926 ** using the lexical binding of a variable named in the *FOO* style
5927 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5928 as specified by ANSI.
5929 * *RANDOM-STATE* is no longer automatically initialized from
5930 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5931 default behavior of the system is to repeat its behavior every time
5932 it's run. If you'd like to change this behavior, you can always
5933 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5934 old convention there was no comparably easy way to get the system to
5935 repeat its behavior every time it was run.
5936 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5937 FTYPE declarations has been removed, in favor of their ANSI
5938 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5939 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5940 the types of their sequence arguments can be determined at compile time.
5941 This is done through a new open code expansion for MAP which eliminates
5942 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5943 argument types can be determined at compile time.
5944 * The optimizer now transforms COERCE into an identity operation when it
5945 can prove that the coerced object is already of the correct type. (This
5946 can be a win for machine generated code, including the output of other
5947 optimization transforms, such as the MAP transform above.)
5948 * Credit information has been moved from source file headers into CREDITS.
5949 * Source file headers have been made more standard.
5950 * The CASE macro now compiles without complaining even when it has
5953 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5955 * (Note that the way that the PCL macroexpansions were rewritten
5956 to accommodate the change in DEFGENERIC below breaks binary
5957 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5958 not run under sbcl-0.6.2. Once we get out of alpha releases,
5959 i.e. hit release 1.0.0, we'll probably try to maintain binary
5960 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5961 and sbcl-1.4.4. Until then, however, it might be fairly common
5962 for maintenance releases to break binary compatibility.)
5963 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5965 * The reporting of unhandled signals has been changed to print some
5966 explanatory text as well as the report form. (Previously only
5967 the report form was printed.)
5968 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5969 it defines, so that the compiler no longer issues undefined function
5970 warnings for compiled-but-not-yet-loaded generic functions.
5971 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5972 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5973 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5974 section of the ANSI spec are supported.
5975 * The "" nickname for the "KEYWORD" package has been removed.
5976 The reader still handles symbol tokens which begin with a package marker
5977 as keywords, but it doesn't expose its mechanism for doing so in the
5978 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5979 * The system now issues STYLE-WARNINGs for contradictory TYPE
5980 proclamations. (Warnings for contradictory FTYPE proclamations would
5981 be nice too, but those can't be done usefully unless the type system
5982 is made smarter about FUNCTION types.)
5983 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5984 systematized, so that "*target-*.lisp is supposed to exist only on the
5985 target and imply that there's a related file which exists on the
5986 host, and *host-*.lisp is supposed to exist only on the host and imply
5987 that there's a related file which exists on the target. This involves a
5988 lot of renaming. Hopefully the acute confusion caused by the renaming
5989 will be justified by the reduction in chronic confusion..
5990 ** runtime-type.lisp -> early-target-type.lisp
5991 ** target-type.lisp -> late-target-type.lisp
5992 ** early-host-format.lisp -> early-format.lisp
5993 ** late-host-format.lisp -> late-format.lisp
5994 ** host-error.lisp -> misc-error.lisp
5995 ** early-error.lisp -> early-target-error.lisp
5996 ** late-error.lisp -> late-target-error.lisp
5997 ** host-defboot.lisp -> early-defboot.lisp
5998 ** code/misc.lisp -> code/target-misc.lisp
5999 ** code/host-misc.lisp -> code/misc.lisp
6000 ** code/numbers.lisp -> code/target-numbers.lisp
6001 ** code/early-numbers.lisp -> numbers.lisp
6002 ** early-host-type.lisp -> early-type.lisp
6003 ** late-host-type.lisp -> late-type.lisp
6004 ** host-typep.lisp -> typep.lisp
6005 ** load.lisp -> target-load.lisp
6006 ** host-load.lisp -> load.lisp
6007 ** host-disassem.lisp -> disassem.lisp
6008 ** host-insts.lisp -> insts.lisp
6009 ** byte-comp.lisp -> target-byte-comp.lisp
6010 ** host-byte-comp.lisp -> byte-comp.lisp
6011 ** host-signal.lisp -> signal.lisp
6012 ** host-defstruct.lisp -> defstruct.lisp
6013 ** late-target-type.lisp -> deftypes-for-target.lisp
6014 Furthermore, several other previously target-only files foo.lisp (e.g.
6015 hash-table.lisp and random.lisp) have been split into a target-and-host
6016 foo.lisp file and a target-only target-foo.lisp file, with their key type
6017 definitions in the target-and-host part, so that the cross-compiler will
6018 know more about target types.
6019 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6020 gone away. In their place are various *BACKEND-FOO* variables
6021 corresponding to the slots of the old structure.
6022 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6023 into the target SBCL has been fixed.
6024 * The chill.lisp system for loading cold code into a running SBCL
6026 * Support for the CMU CL "scavenger hook" extension has been removed.
6027 (It was undocumented and unused in the CMU CL sources that SBCL was
6028 derived from, and stale in sbcl-0.6.1.)
6029 * Various errors in the cross-compiler type system were detected
6030 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6031 (enabling various consistency checks). Many of them were fixed,
6032 but some hard problems remain, so the compiler is back to
6033 running without *TYPE-SYSTEM-INITIALIZED* for now.
6034 * As part of the cross-compiler type system cleanup, I implemented
6035 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6036 * I have started adding UNCROSS calls throughout the type system
6037 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6038 on cross-compiler input files will be able to go away, and various
6040 * CONSTANTP now returns true for quoted forms (as explicitly required
6043 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6045 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6046 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6047 (MAKE-LIST -1). In the longer term, it ought to become true
6048 that declarations are assertions even at SAFETY 1. For now, it's not
6049 quite true even at SAFETY 3, but it's at least more nearly true..
6050 (Note that this change seems to increases the size of the system by
6051 O(5%) and to decrease the speed of the compiler by 20% or more.)
6052 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6053 for the problem of printing dozens of lines of distracting information
6054 about low-level system machinery as part of the top stack frame
6055 on entry to the debugger when an undefined function was called.
6056 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6057 is not reset to COMMON-LISP-USER.
6058 * Compilation of stuff related to dyncount.lisp has been made conditional
6059 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6060 smaller. The various dyncount-related symbols have been moved into
6061 a new "SB-DYNCOUNT" package.
6062 * tty-inspect.lisp has been renamed to inspect.lisp.
6063 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6064 feature has gone away. (When we eventually port to other flavors of
6065 libc and/or Unix, we'll try to make the differences between flavors
6066 invisible at the user level.)
6067 * Various other *FEATURES* tags, and/or their associated conditionals,
6068 have been removed if obsolescent, or given better documentation, or
6069 sometimes given more-mnemonic names.
6071 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6073 * tidied up "make.sh" script
6074 * tidied up system directory structure
6075 * better "clean.sh" behavior
6076 * added doc/FOR-CMUCL-DEVELOPERS
6077 * many many small tweaks to output format, e.g. removing possibly-confusing
6078 trailing #\. character in DESCRIBE-INSTANCE
6079 * (EQUALP #\A 'A) no longer signals an error.
6080 * new hashing code, including EQUALP hashing
6081 * tidied up Lisp initialization and toplevel
6082 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6083 * command line argument processing
6084 * added POSIX-GETENV function to deal with Unix-ish environment variables
6085 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6086 terminating SBCL on EOF
6087 * non-verbose GC by default
6088 * There is no more "sbcl" shell script; the sbcl file is now the C
6089 runtime executable (just like CMU CL).
6090 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6092 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6093 symbol and package information as Lisp native symbol and package objects
6094 instead of strings naming symbols and strings naming packages. This way,
6095 whenever packages are renamed (as in warm init), debug information is
6096 transformed along with everything else.
6097 * tweaked the optimization policy declarations which control the building
6098 of SBCL itself. Now, among other things, the system no longer saves
6099 source location debugging information. (This helps two problems at once
6100 by reducing SBCL size and by keeping SBCL from trying to look for its
6101 sources -- which may not exist -- when reporting errors.)
6102 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6103 debugging and testing purposes
6104 * cleaned up printing, making the printer call PRINT-OBJECT for
6105 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6106 methods, giving nearly-ANSI behavior
6107 * converted almost all special variables to use *FOO* naming convention
6108 * deleted PARSE-TIME functionality, since it can be done portably
6109 * moved some files out of cold init into warm init
6110 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6112 * regularized formatting of source files
6113 * added an install.sh script
6114 * fixed ridiculous memory usage of cross-compiler by making
6115 compiler/alloc.lisp not try to do pooling unless it can hook
6116 itself into the GC of the cross-compilation host. Now the system
6117 builds nicely on my old laptop.
6118 * added :SB-ALLOC in target-features.lisp-expr
6119 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6120 was not implemented)
6121 * re-did condition handling and note reporting in the compiler. Notes
6122 are no longer handled by signalling conditions. Style warnings
6123 and warnings are handled more correctly and reported in such a way
6124 that it's easy to find one or the other in your output (so that you
6125 can e.g. figure out which of many problems caused COMPILE-FILE to
6127 * changed the severity of several compiler warnings from full WARNING
6128 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6129 compiler note reporting so that it doesn't use the condition system
6130 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6131 COMPILE-FILE command)
6132 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6133 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6134 no longer supported, since their implementation was deeply intertwingled
6135 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6136 * removed bogus "support" for compiler macros named (SETF FOO), and
6137 removed the compiler macro for SETF INFO (but only after making a fool
6138 of myself on the cmucl-imp mailing list by posting a bogus patch for
6139 DEFINE-COMPILER-MACRO..)
6140 * Compiled files containing forms which have side effects on the Lisp
6141 reader (such as DEFPACKAGE forms) are now handled more correctly.
6142 (Compiler queuing of top level lambdas has been suppressed by setting
6143 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6144 * deleted various currently-unused source files, e.g. gengc.lisp. They
6145 may be added back at some point e.g. when porting to other architectures,
6146 but until they are it's distracting to distribute them and to try to
6148 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6149 there were so many of them they're just distractions, and UNCROSS is
6150 known to be able to handle the current sources
6151 * moved PROFILE functionality into TRACE, so that it will be clear
6152 how the wrapping and unwrapping of functions when you profile them
6153 interacts with the wrapping and unwrapping of functions when you
6154 trace them. (Actually, the functionality isn't there yet, but at least
6155 the interface specification is there. Hopefully, the functionality will
6156 arrive with some future maintenance release.)
6157 * removed host-oops.lisp
6158 * changed signature of QUIT function to allow UNIX-CODE argument
6159 * fixed READ-SEQUENCE bug
6160 * tweaked verbose GC output so that it looks more like the progress
6161 output that ANSI specifies for functions like LOAD
6162 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6163 * added <http://sbcl.sourceforge.com> to the banner information printed by