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 * optimization: local call trampolines (x86 and x86-64) are emitted
20 * meta-optimization: improved compilation speed, especially for large
21 functions. (lp#792363 and lp#394206)
22 * bug fix: bound derivation for floating point operations is now more
23 careful about rounding possibly closing open bounds. (lp#793771)
24 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
25 backwards incompatible change in 1.0.48.27)
26 * bug fix: occasional debugger errors in when a type-error occured in a
27 function with dynamic-extent &rest list.
28 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
29 boa-construtors can be used to initialized structure slots.
30 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
31 (lp#795705, regression)
32 * bug fix: DIRECTORY works better on logical pathnames.
33 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
34 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
35 * bug fix: the compiler no longer constant-folds NaNs in
36 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
37 * bug fix: FORMAT now handles floating point rounding correct, eg.
38 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
40 * bug fix: style warning during lambda-list introspection of generic
41 functions with both optional and key argments.
43 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
44 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
45 interrupts for its body.
46 * enhancement: source locations are now available for files loaded as
47 source, compile-time-too evaluation, and initialization files.
48 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
49 virtual source-file information, eg. overriding input-file of COMPILE-FILE
50 when a temporary file is used for compilation.
51 * enhancement: ASDF has been updated to version 2.015.3.
52 * enhancement: backtraces involving frames from the default evaluator are
54 * enhancement: RUN-PROGRAM works with user-defined binary input and output
56 * enhancement: more informative compile-time warnings and runtime errors for
57 type-errors detected at compile-time.
58 * enhancement: deadlock detection for mutexes and spinlocks.
59 * enhancement: dynamic-extent for &rest lists stack allocate only their
60 spines, not their argumets. While portable code should not rely on this,
61 particularly in combination with inlining, it should make dynamic-extent
63 * enhancement: SB-POSIX improvements:
64 ** WNOHANG and WUNTRACED are exported.
65 ** SYSCALL-ERROR now also provides the name of the failing system call.
66 * enhancement: --script improvements:
67 ** errors on standard input, output, and error streams are handled and
68 cause scripts to exit silently, making them easier to use in shell
70 ** backtraces from scripts now go to standard error instead of the
71 terminal even if one is available.
72 ** --script can be an argument, causing the script to be loaded from
74 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
75 strings to foreign memory.
76 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
77 a file, making it easier to understand heap dynamics.
78 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
79 allows the compiler to automatically elide rest-list allocation so long as
80 the call sites are in functions that the compiler knows cannot escape.
82 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
83 especially in safe code when none of the required arguments have changed
85 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
86 uninterruptible, as well as blocking reads from socket streams created
87 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
88 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
89 from the to-char if the from-char is not a dispatch-macro character.
90 * bug fix: references to undefined variables in function calls that are
91 optimized away now signal a runtime error. (lp#722734)
92 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
93 types from a function defined in the same file. (regression from
95 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
97 * bug fix: spurious errors during QUIT when standard streams were closed.
99 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
100 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
101 years, is now no longer supported.
102 * enhancement: read() and write() have been added to SB-POSIX.
103 * enhancement: types of DEFSTRUCT constructors are proclaimed more
104 accurately, allowing better typechecking of call-sites.
105 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
106 are no longer caught. (reverted to pre 1.0.34 behaviour)
107 * optimization: slightly faster ISQRT. (lp#713343)
108 * bug fix: better support for Solaris /bin/sh in sh-based tests.
109 * bug fix: TRACE behaves better when attempting to trace undefined
110 functions. (lp#740717)
111 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
112 to (FUNCALL #'(LAMBDA ...) ...).
113 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
114 a compile-time error. (lp#720382)
115 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
117 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
118 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
119 optimization. (regression from 1.0.45.18/1.0.46.15)
120 * bug fix: package locks did not protects against compile-time side-effects
121 of DEFUN. (lp#675584)
122 * bug fix: --dynamic-space-size argument is validated more carefully.
124 * bug fix: memory fault from printing a malformed simple-condition.
126 * bug fix: redefining classes so that slot-definition classes change now
127 engages the obsolete instance protocol. (lp#766271)
128 * bug fix: constant improper lists could break source coverage recording.
130 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
133 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
134 * bug fix: fix mach port rights leaks in mach exception handling code on
135 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
137 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
138 * enhancement: redefinition warnings for macros from different files. (lp#434657)
139 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
140 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
141 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
142 processed using EVAL -- now the appropriate toplevel form is reported instead.
143 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
144 declarations. (lp#726331)
145 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
146 that NIL/NULL is excluded from the type.
147 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
149 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
151 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
152 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
153 stack-allocated values out of their dynamic-extent. (lp#310175)
154 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
155 x86-64 builds caused a type-error.
156 * bug fix: calling COMPILE with something else than a lambda-expression as the
157 second argument reports a more sensible error. (lp#718905)
158 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
159 are detected. (lp#520607)
160 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
162 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
163 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
164 methods. (regression from 1.0.45.18)
165 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
166 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
167 * bug fix: several foreign functions accepting string also accepted NIL and
168 consequently caused a memory fault at 0 now signal a type-error instead.
170 * bug fix: under rare circumstances, constraint propagation could rewrite a
171 variable reference to refer to a variable not in scope, causing an error
172 during physical environment analysis when attempting to close over the
173 variable. (lp#551227)
174 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
176 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
177 * enhancement: largefile support on Solaris.
178 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
179 arguments (lp#710017)
180 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
181 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
183 * optimization: ERROR and CERROR are approximately 5 times faster.
184 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
185 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
186 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
187 up instance creation in those cases.
188 * optimization: arithmetic operations with multiple constant arguments in now
189 have them reduced at compile-time. (lp#676414)
190 * optimization: determining current character position on string-streams for
191 pretty-printing was overly slow.
192 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
193 lifetime analysis to overwrite closed-over variables (lp#681092).
194 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
195 were not handled correctly (lp#713063).
196 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
198 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
199 mistake. (lp#667297).
200 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
201 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
202 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
203 unintern the wrong symbol with the same name. (lp#693796)
204 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
205 making it possible to restore the initial table if it has been messed up.
208 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
209 * enhancement: ~/ and ~user/ are treated specially in pathnames.
210 Refer to documentation for details.
211 * enhancement: ASDF has been updated to version 2.010.
212 * optimization: mutated closed-over variables that are only accessed by
213 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
214 declared to be DYNAMIC-EXTENT) are stored directly in their containing
215 stack frame, rather than allocating a VALUE-CELL (lp#586103).
216 * optimization: UNWIND-PROTECT cleanup functions are now declared
218 * bug fix: backtracing function with &REST arguments now shows the full
219 argument list. (lp#310173)
220 * bug fix: return types for functions with complex lambda-lists are now
221 derived properly (lp#384892)
222 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
223 long string arguments slowed the compiler down to a crawl.
224 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
225 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
226 in the DEFMETHOD body.
227 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
228 messages, being instead replaced with the corresponding function name.
229 * bug fix: don't derive overly complex unions of numeric types for arithmetic
230 operators. (lp#309448)
232 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
233 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
234 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
235 * enhancement: ALLOCATION-INFORMATION also provides the page the object
237 * enhancement: default dynamic-space size can be configured at build-time
238 without touching source, using the --dynamic-space-size argument to make.sh.
239 * enhancement: DESCRIBE recognizes symbols naming optimization policy
240 qualities, and mentions ALWAYS-BOUND declarations.
241 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
243 * enhancement: ASDF has been updated to 2.009.
244 * enhancement: the system detects known type-erros in calls better,
245 signalling a full warning about violated proclaimed FTYPEs and violations
246 of derived FTYPEs within the same file, including self-calls.
247 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
248 * optimization: constant-folding exploits numeric and character types, in
249 addition member types.
250 * optimization: numeric, character and member types that are inhabited by
251 exactly one value are tested with EQL.
252 * optimization: more conditional branches are eliminated during IR1.
253 Branches are simplified before performing if/if-conversion, and simple
254 equivalent branches (that only read the same constant or variable) are
256 * improvements to the Windows port:
257 ** change: canonical unparsing form for pathname namestrings now uses / as
258 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
259 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
260 on Windows. (thanks to Kalyanov Dmitry)
261 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
263 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
264 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
265 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
266 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
268 * bug fix: interrupts arriving during CL:OPEN caused an error.
269 * bug fix: overeager character buffering could cause input to block
270 spuriously when reading from a pipe (lp#643686)
271 * bug fix: more efficient timer expiry should avoid starvation on systems
272 where number of SIGALRMs per second is restricted. (lp#375515)
273 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
274 * bug fix: compile-times no longer scale linearly with the size of
275 quoted lists in source-code. (lp#654289)
276 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
277 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
278 so badly. (lp#654485)
279 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
280 an error for eg. STRUCTURE. (lp#458015)
281 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
282 (lp#613871, thanks to Roman Marynchak)
283 * bug fix: more reliable &REST list type derivation. (lp#655203)
284 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
285 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
286 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
287 also declared NOTINLINE. (lp#655581)
288 * bug fix: the compiler could attempt to emit constant left shifts of
289 greater value than n-word-bits. (lp#309063)
290 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
291 type information for the function being set. (lp#659220)
292 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
293 containing self-calls were recompiled with a new signature, and failed
294 to warn when a self-call using the old signature was left in. (lp#655126)
295 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
296 :DEFAULT when the default external had character size other than 8 bits.
298 * bug fix: derived types of functions in the same file were implicitly
299 trusted, leading to potential heap corruption when those function were
300 defined incompatibly. (lp#657499)
301 * bug fix: existing ASDF source registries are ignored when building
303 * bug fix: short-form DEFSETF checks that the second argument is a symbol
304 (lp#655824, thanks to Roman Marynchak)
305 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
306 package-lock violation was detected. (lp#660752)
307 * bug fix: the system can store different docstrings for a single function
308 under different names. (lp#661631, regression from 1.0.29.24)
309 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
310 properly. (lp#384801)
311 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
312 of specified length could confuse the type derivation in unsafe code.
314 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
315 fork with multiple Lisp threads running is made on every platform,
316 not just Darwin. (lp#451111)
317 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
318 around when core was saved, which could cause undefined behaviour when the
320 * bug fix: Allow UNTRACE of functions that are no longer defined
321 (lp#667657, thanks to Attila Lendvai)
322 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
323 compile-time warning (lp#664373, thanks to Stas Boukarev)
325 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
326 * incompatible change: FD-STREAMS no longer participate in the serve-event
327 event-loop by default. (lp#316072)
328 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
329 affects streams from CL:OPEN.
330 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
331 default, but this is liable to change: applications needing serve-event
332 for socket streams should explicitly request it using :SERVE-EVENTS T
334 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
336 * enhancement: CLOS effective method functions and defclass slot typechecking
337 function now have debug names for use in backtraces and profiles.
338 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
340 * enhancement: symbols are printed using fully qualified names in several
341 error and warning messages which are often associated with package
342 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
343 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
344 thanks to Andrew Golding)
345 * bug fix: reading /proc files on Linux works. (lp#425199)
346 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
348 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
349 breaking code that tried to write the value of a printer control variable.
350 (lp#581564, thanks to Stas Boukarev)
351 * bug fix: WRITE compiler macro did not handle output stream designators
352 correctly. (lp#598374, thanks to Stas Boukarev)
353 * bug fix: better availability of names of foreign functions in backtraces
354 on Linux. (lp#626962, thanks to Stas Boukarev)
355 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
356 lp#627581, thanks to Josh Elsasser and Jim Wise)
357 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
358 thanks to Josh Elsasser)
359 * bug fix: using aliases for builtin classes as defmethod specializers
360 without adding DEFTYPEs for them works. (lp#618387)
361 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
363 * bug fix: legally dynamic-extent lists and vectors used as
364 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
365 * bug fix: inline-expansion creating references to dead lambda-variables
366 (lp#454681, thanks to Alexey Dejneka)
367 * bug fix: better error message for bogus numerical arguments to RANDOM.
368 (lp#598986, thanks to Stas Boukarev)
369 * bug fix: the compiler occasionally inlined references from incompatible
370 environments occurs. (lp#308951)
371 * bug fix: the compiler threw an error when trying to compile a local
372 function (labels or flet) known to take a specialized complex argument.
373 (not in launchpad, reported by sykopomp in #lispgames)
374 * bug fix: package-locks failed to protect against compile-time effects of
375 DEFUN when the symbol previously had a macro definition. (lp#576637)
376 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
377 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
378 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
379 * bug fix: evaluation in debugger REPL works using the global context when
380 in frames that do not have sufficient debug information.
381 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
383 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
385 * bug fix: interrupt taking longer than the requested period caused SLEEP
386 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
388 changes in sbcl-1.0.42 relative to sbcl-1.0.41
390 ** Cross-compilation host is now specified to make.sh using
391 command-line argument --xc-host=<command> instead of a positional
392 argument. (thanks to Daniel Herring)
393 ** Install location can be specified to make.sh using command-line
394 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
395 * optimization: The default implementation of
396 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
397 * enhancement: Explicit memory barrier operations are now available for use
398 by multithreaded code. See documentation for details.
399 * enhancement: Experimental support for threading on Linux/PPC.
400 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
401 * bug fix: EXPT signals an error if first argument is a zero and second
402 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
403 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
404 (lp#576594, thanks to Roman Marynchak)
405 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
406 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
408 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
409 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
410 cached, leading to many fewer expensive calls to
411 COMPUTE-APPLICABLE-METHODS.
412 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
413 CLASS argument, search for and call an appropriate optimized ctor function
415 * bug fix: WRITE always returns the correct value.
417 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
418 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
419 * bug fix: Name conflicts between symbols passed as arguments to a single
420 call to IMPORT no longer add multiple symbols with the same name to the
421 package (detectable via DO-SYMBOLS).
422 * bug fix: support building without the dlshim on darwin x86 and x86-64
424 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
426 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
427 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
429 * bug fix: linkage-table entries on PPC now no longer overflow their
430 space allocation (potentially causing crashes if they are written out
432 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
433 platforms, preventing the GC from seeing stale pointers on the control
434 stack in subsequent GCs (which would, and does, break invariants).
435 * bug fix: 32-bit unicode external formats now work on big-endian systems.
436 * bug fix: Literal characters with code points greater than about 32767
437 now work on PPC UNICODE builds.
438 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
439 high order bits are explicitly cleared out. In some contrived situations,
440 this could lead to wrong results in mixed real/complex float arithmetic.
441 * bug fix: Fix function/macro redefinition warnings when building with
442 clisp. (lp#576787, thanks to Josh Elsasser)
443 * new platform: experimental support for ppc/openbsd (thanks to Josh
445 * bug fix: Floating-point traps now work on ppc/linux.
447 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
448 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
449 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
450 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
451 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
452 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
453 SB-THREAD:GRAB-MUTEX.
454 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
455 contain additional data structures and tools for concurrent programming;
456 at the moment it contains a lock-free queue, and a lock-free mailbox
458 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
459 GET-MUTEX but takes &key rather than &optional parameters. Also added
460 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
462 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
463 SB-THREAD:WAIT-ON-SEMAPHORE.
464 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
466 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
467 conditions to defer the deadline for forever.
468 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
470 * enhancement: errors from NO-APPLICABLE-METHOD and
471 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
472 generic function call.
473 * enhancement: SB-BSD-SOCKET improvements
474 ** sockets and socket streams now have a more informative printed
475 representation based on the corresponding SOCKET-NAME and
477 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
479 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
480 CL:CLOSE when appropriate, and no longer disassociates the stream
481 from the socket if close failed. (lp#543951)
482 * improvements to the instrumenting profiler
483 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
484 ** optimization: counters no longer use locks for the overflow mode.
485 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
486 incurred an off-by-one miscount.
487 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
488 * enhancement: improved DEFMETHOD pretty-printing.
489 * enhancement: perform range reduction when arguments are too large for
490 x87's transcendentals (instead of returning 0). (lp#327192)
491 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
492 some of CL-PPCRE's macros. (lp#570079)
493 * enhancement: our machine code is slightly less hostile to valgrind on
495 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
496 to Robert Swindells and Aleksej Saushev)
497 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
498 * bug fix: a rare case of startup-time page table corruption.
499 * bug fix: a semaphore with multiple waiters and some of them unwinding due
500 to timeouts could be left in an inconsistent state.
501 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
502 * bug fix: misoptimization of multiplication by one in
503 (SB-C::FLOAT-ACCURACY 0) policies.
504 * bug fix: miscounts in SB-PROFILE.
505 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
506 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
507 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
508 up itself" (March 2010) for further details.
509 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
510 against length of the list if the element is found before the specified
511 END is reached. (thanks to Alec Berryman, lp#554385)
512 * bug fix: errors signalled during package graph modification no longer
513 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
514 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
515 :SB-DOC feature. (lp#552564)
516 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
517 * bug fix: more robust runtime executable path detection. (lp#375549)
518 * bug fix: GCD always returns positive values. (lp#413680)
519 * bug fix: Converting division to multiplication by reciprocal handles
521 * bug fix: We were too eager in eliding range reduction tests on x87.
522 The maximal magnitude is 2^63, not 2^64.
523 * bug fix: Transforms for TRUNCATE don't die when the result is completely
525 * bug fix: Maybe restore buildability on Alpha.
526 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
528 * bug fix: RANDOM-STATE can be printed readably again.
529 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
530 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
531 types) could result in type mismatches during compilation.
533 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
534 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
535 stack frame thrown from.
536 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
537 compiler optimization qualities inside dynamic extent of its body.
538 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
539 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
541 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
542 constraint propgation, allowing better compilation eg. when used to
543 access structures with WITH-SLOTS. (lp#520366)
544 * optimization: the compiler is now more aware of the type of the underlying
545 storage vector for multidimensional simple arrays resulting in better code
546 for accessing such arrays.
547 * optimization: passing NIL as the environment argument to TYPEP no longer
548 inhibits optimizing it. (lp#309788)
549 * optimization: more efficient register usage when handling single-float
550 arguments on x86-64. (thanks to Lutz Euler)
551 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
552 pre-allocated temporary vectors. (lp#496249)
553 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
554 in :INITIAL-CONTENTS. (lp#523612)
555 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
556 functions. (lp#524707)
557 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
558 WITH-SLOTS usages during compilation.
559 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
560 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
561 all x86oid platforms with :UD2-BREAKPOINTS target feature.
562 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
563 instruction (tested on x86oid linux with ud2-breakpoints).
564 * bug fix: slam.sh now works on win32.
565 * bug fix: better differences of numeric types. (lp#309124)
566 * bug fix: arrays declared intersection and union types can have their
567 upgraded element type derived. (lp#316078)
568 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
569 threads started during profiling. (lp#472499)
570 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
572 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
573 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
574 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
575 values instead of signaling an error. (lp#309093)
576 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
578 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
579 declarations (lp#497321)
580 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
581 and failed to detect circular lists (lp#452008)
582 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
584 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
585 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
586 due to it, so that handlers can run.
587 * bug fix: reparsing undefined types if they have become defined since
589 * bug fix: missing &REST type in a proclamation for a function with both
590 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
591 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
592 expanded calls (lp#542174)
593 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
594 than just at toplevel form.
596 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
597 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
598 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
599 but work on type specifiers.
600 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
601 to name a type specifier.
602 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
603 specifier is valid where "valid" basically means "would be accepted as
604 second argument of TYPEP".
605 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
606 returns the function's declared, or derived FTYPE.
607 * new feature: SB-POSIX now supports accessing the d_ino member of
608 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
609 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
610 provide for seeding a RANDOM-STATE object with user-provided data or
611 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
612 attempt to initialize the returned state from the operating system's
613 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
614 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
615 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
616 * bug fix: Fix grammar and style issues for the docstrings of
617 printer-related variables and functions. (Thanks to mon_key; launchpad
619 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
621 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
622 in a row even though a handler defered the deadline long into the
624 * bug fix: A deadline handler was run without interrupts enabled for a
625 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
626 in infinitely spinning, non-killable threads.
627 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
628 before reaching the erring stack frame.
629 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
630 real power. (launchpad bug lp#525949)
631 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
632 GENCGC platforms. (launchpad bug lp#529014)
633 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
634 (launchpad bug lp#525916)
635 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
636 (Thanks to Robert Goldman)
638 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
639 * optimization: ROUND with a single single-float or double-float argument
640 is properly inlined when possible.
641 * optimization: Slightly better code is generated for integer<->float
642 conversions and for single-float<->double-float conversions on x86-64.
643 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
644 code for 32-bit and 64-bit rotations on x86-64.
645 * bug fix: The install script changes the ownership of directories as well
646 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
647 launchpad bug lp#508485)
648 * bug fix: TRUNCATE with a single single-float or double-float argument is
649 properly inlined when possible. (launchpad bug lp#489388)
650 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
651 no longer causes a compiler error on x86 and ppc.
652 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
653 always relative to *READTABLE* rather than the passed argument.
655 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
656 * minor incompatible change: threading support is now enabled by default
658 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
660 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
661 are now caught and reported just like errors during macroexpansion.
662 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
663 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
664 * enhancement: ASDF systems can now depends on SB-QUEUE.
665 * fixes and improvements related to Unicode and external formats:
666 ** bug fix: error handling and restart usage in the ucs-2 external format
668 ** there is now an implementation of the ucs-4 external format.
669 ** the utf-16 and utf-32 external formats are supported.
670 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
671 in the environment. setenv() and unsetenv() are also provided. (reported by
672 Fare Rideau; launchpad bug lp#460455)
673 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
674 loading. This ensures sensible errors for .FASL files from other
675 implementations on case-insensitive filesystems. (reported by Willem
676 Broekema; launchpad bug lp#489417)
677 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
678 Willem Broekema; launchpad bug lp#489698).
679 * bug fix: some minor code rearrangements to reenable warning-free building
680 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
681 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
683 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
686 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
687 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
688 * improvement: support O_LARGEFILE access to files larger than 2GB on
689 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
690 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
691 definitions for methods specializing on the passed class itself.
692 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
693 definitions for methods specializing on the passed class itself, or on
695 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
696 about itself during the build (e.g. for M-? in Slime), if this flag is
697 enabled in customize-target-features.lisp. This will increase the core
698 size by about 5-6mb, though, so it's mostly interesting to SBCL
700 * new feature: various GENCGC tuning parameters have been experimentally
701 documented and exported from SB-EXT. See documentation for details.
702 * fixes and improvements related to Unicode and external formats:
703 ** the Unicode character database has been upgraded to the
704 Unicode 5.2 standard, giving names and properties to a number of new
705 characters, and providing a few extra characters with case
707 ** improvement: restarts for providing replacement input/output on coding
708 errors for fd-stream external formats.
709 ** improvement: where :<encoding> is a keyword corresponding to an
710 external format the system supports, it is now possible to specify
711 (:<encoding> :replacement <character>) as an external format which will
712 automatically substitute <character> on encoding or decoding errors for
713 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
715 ** improvement: the file streams underlying the standard streams (such as
716 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
717 which uses the replacement mechanism to handle encoding errors,
718 preventing various infinite error chains and unrecoverable I/O
720 ** minor incompatible change: the utf-8 external format now correctly
721 refuses to encode Lisp characters in the surrogate range (char-codes
722 between #xd800 and #xdfff).
723 ** fix a typo preventing conversion of strings into octet vectors
724 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
726 ** fix a bug in the octet multibyte handling of decoding errors and the
727 USE-VALUE restart. (launchpad bug lp#314939)
728 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
729 restart on fd-stream decoding errors.
730 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
731 error is near the end of file.
732 ** fix a double-error case in unibyte octet conversions, when the first
733 use of USE-VALUE is ignored.
734 ** fix bugs in handling of undefined code points in unibyte encodings.
735 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
736 streams after an UNREAD-CHAR.
737 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
738 object is allocated in a boxed region of dynamic space.
739 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
740 fork with multiple Lisp threads running is made, instead of going
741 ahead with unpredictable consequences. (reported by Leslie Polzer)
742 * bug fix: uses of slot accessors on specialized method parameters within
743 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
744 error while finalizing the class. This fix may cause classes with slot
745 accessors to be finalized later than previously. (reported by Lars Rune
746 Nøstdal; launchpad bug lp#473699)
747 * bug fix: restore buildability on the MIPS platform. (regression from
748 1.0.30.38, reported by Samium Gromoff)
749 * bug fix: inspecting closures is less likely to fail with a type error.
750 * bug fix: no timer starvation when setting the system clock back.
751 (launchpad bug lp#460283)
752 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
753 standard pprint dispatch table as specified by CLHS.
754 * bug fix: give CLISP a hint about a type declaration to enable it to build
755 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
757 * bug fix: correctly dump literal objects in defaulting forms of arglists.
758 (reported by Attila Lendvai; launchpad bug lp#310132)
759 * bug fix: distinguish in type specifiers between arrays that might be
760 complex and arrays that are definitely complex. (launchpad bug lp#309129)
761 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
762 type. (reported by Levente Mészáros; launchpad bug lp#485972)
763 * bug fix: setting the value of a symbol-macro within a method in the
764 presence of type declarations works properly again. (reported by Iban
765 Hatchondo; launchpad bug lp#485019)
767 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
768 * optimization: faster FIND and POSITION on strings of unknown element type
769 in high SPEED policies. (thanks to Karol Swietlicki)
770 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
772 * improvement: better error signalling for bogus parameter specializer names
773 in DEFMETHOD forms (reported by Pluijzer)
774 * bug fix: DELETE-FILE once again works on logical pathnames (regression
776 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
778 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
779 removes previous default initargs (reported by Lars Rune Nøstdal and
781 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
782 lambda-lists. (reported by Peter Seibel)
783 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
784 correctly when starting from an executable core without saved runtime
785 options (reported by Faré Rideau, thanks to Zach Beane)
786 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
787 an optimization note instead. (reported by Martin Cracauer)
788 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
789 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
790 new process group if it doesn't need to share stdin with the sbcl
791 process. (thanks to Leslie Polzer)
792 * bug fix: SATISFIES could be misoptimized to refer to a local function.
793 (reported by Stanislaw Halik)
795 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
796 * improvement: stack allocation is should now be possible in all nested
797 inlining cases: failure to stack allocate when equivalent code is manually
798 open coded is now considered a bug.
799 * improvements related to Unicode:
800 ** the Unicode character database has been upgraded to the
801 Unicode 5.1 standard, giving names and properties to a number of new
802 characters, and providing a few extra characters with case
804 ** the system now recognizes and produces names for Unicode Hangul
806 ** the EBCDIC-US external-format is now supported for octet operations
807 (as well as for stream operations).
808 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
809 be used to output toplevel compile-time effects into a separate .CFASL
811 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
812 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
814 * optimization: TRUNCATE on known single- and double-floats is upto 25%
816 * optimization: division of floating point numbers by constants uses
817 multiplication by reciprocal when an exact reciprocal exists.
818 * optimization: multiplication of single- and double-floats floats by
819 constant two has been optimized.
820 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
821 sufficient type information is available. (thanks to Leslie Polzer)
822 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
823 known structure objects are as efficient as defstruct generated accessors.
824 * optimization: unused vector creation can now be optimized away.
825 * improvement: ASDF systems can now depends on SB-INTROSPECT.
826 * improvement: a STYLE-WARNING is signalled when a generic function
827 clobbers an earlier FTYPE proclamation.
828 * improvement: the compiler is able to track the effective type of
829 generic function across method addition and removal even in the
830 absence of an explicit DEFGENERIC.
831 * improvement: DESCRIBE now reports on symbols naming undefined
832 but assumed or declared function as well.
833 * improvement: recompilation of systems using SB-GROVEL now works
834 (thanks to Leslie Polzer)
835 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
836 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
838 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
839 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
840 well as user defined declaration names.
841 ** VARIABLE-INFORMATION is now aware of alien variables.
842 * improvement: improved address space layout on OpenBSD (thanks to Josh
844 * improvement: pretty-printing of various Lisp forms has been improved
845 (thanks to Tobias Rittweiler)
846 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
847 unused were deleted in safe code. (reported by John Fremlin)
848 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
850 * bug fix: some out-of-line array predicates were missing (reported by
852 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
854 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
855 (thanks to Larry D'Anna)
856 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
857 as well. (reported by Josh Elsasser)
858 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
859 leading to possible attempts to delete the same file twice. See docstring
860 on DELETE-FILE for details. (reported by John Fremlin)
861 * bug fix: DELETE-FILE once again deletes the file named by the pathname
862 designator argument, rather than its truename. (reported by Luis
864 * bug fix: the low-level debugger had 32-bit assumptions and was missing
865 information about some array types. (thanks to Luis Oliveira)
866 * bug fix: moderately complex combinations of inline expansions could
867 be miscompiled if the result was declared to be dynamic extent.
868 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
869 form (+ <variable> <integer>) were miscompiled under certain
871 * bug fix: in some cases no compiler note about failure to stack allocate
872 was emitted, even if the objects were in fact heap allocated.
873 * bug fix: minor violation of "otherwise inaccessible" rule for stack
874 allocation could cause objects users might reasonably expect to
875 be heap allocated to be stack allocated.
876 * bug fix: DESCRIBE signalled an error for generic functions under
877 certain circumstances. (thanks to Leslie Polzer)
878 * bug fix: Fixed spelling of an error message.
880 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
881 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
882 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
883 of SB-THREAD:THREAD-ERROR-THREAD.
884 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
885 * new feature: docstrings for local and anonymous functions are no longer
886 discarded. (thanks to Leslie Polzer)
887 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
888 values in other threads.
889 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
890 about object allocation.
891 * optimization: division of a real float by a complex float is implemented
892 with a specialised code sequence.
893 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
894 keywords is an order of magnitude faster.
895 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
896 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
897 methods, and similarly for non-standard metaclass classes as long as there
898 are no methods additional on MAKE-INSTANCE.
899 * optimization: more efficient type-checks for FIXNUMs when the value
900 is known to be a signed word on x86 and x86-64.
901 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
902 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
904 * optimization: compiler is smarter about delegating argument type checks to
906 * optimization: several character functions are now compiled somewhat more
907 efficiently. (reported by Lynn Quam)
908 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
909 * improvement: less unsafe constant folding in floating point arithmetic,
910 especially for mixed complex/real -float operations.
911 * optimization: constant double and single floats are stored in native
912 unboxed format on x86[-64].
913 * optimization: smarter code for arithmetic operations with constant floats,
914 complex floats, or integers on x86[-64].
915 * optimization: smarter code for conjugate/multiplication of float complexes
916 and abs/negate of floats on x86-64.
917 * optimization: more efficient complex float and real float operations on
919 * improvement: complex float division is slightly more stable.
920 * improvement: DESCRIBE output has been reworked to be easier to read and
921 contains more pertinent information.
922 * improvement: failure to provide requested stack allocation compiler notes
923 provided in all cases (requested stack allocation not happening without a
924 note being issued is now considered a bug.)
925 * bug fix: SB-POSIX exports the documented types and functions
926 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
927 types. (reported by "abhi")
928 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
929 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
930 (thanks to Paul Khuong)
931 * bug fix: looping around HANDLER-CASE could silently consume stack space
932 on each iteration. (reported by "foobar")
933 * bug fix: better error signalling when calls to functions seeking elements
934 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
935 (reported by Tobias Rittweiler)
936 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
937 directory components now works as it used to. (various prolems reported by
938 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
939 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
940 (reported by Elliot Slaughter, thanks to Stas Boukarev)
941 * bug fix: bogus undefined variable warnings from fopcompiled references to
942 global variables. (thanks to Lars Rune Nøstdal)
943 * bug fix: foreign function names should now appear in backtraces on
944 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
945 * bug fix: SETF compiler macro documentation strings are not discarded
947 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
948 (thanks to Alex Plotnick)
949 * bug fix: SLEEP accepts large integer arguments, truncating them to
950 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
951 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
952 * bug fix: compiler notes for expensive slot type checks could be emitted
953 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
955 changes in sbcl-1.0.29 relative to 1.0.28:
956 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
957 https://bugs.launchpad.net/sbcl
958 Bugs can be reported directly there, or by sending email to
959 sbcl-bugs@lists.sourceforge.net
960 (no subscription required.)
961 * minor incompatible change: under weak type checking policy integer
962 types are weakened less aggressively.
963 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
964 allowed to return, which causes SBCL to quit with exit status 0. Previously
965 if the function returned with a small integer return value, that value
966 was accidentally reused as the exit status.
967 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
968 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
969 :HASH-FUNCTION argument. Refer to user manual for details.
970 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
972 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
973 microseconds since the Unix epoch on all platforms.
974 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
975 allows the compiler to safely elide boundedness checks for special
977 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
978 the symbol, prohibits both lexical and dynamic binding. This is mainly an
979 efficiency measure for threaded platforms, but also valueable in
981 * new feature: UNC pathnames are now understood by the system on Windows.
982 * optimization: the compiler uses a specialized version of FILL when the
983 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
985 * optimization: accesses to potentially non-simple arrays where element type
986 is known are 50% faster.
987 * optimization: compiler now generates faster array typechecking code.
988 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
990 * optimization: multidimensional array accesses in the absence of type
991 information regarding array rank are approximately 10% faster due to
992 open coding of ARRAY-RANK.
993 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
994 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
996 * optimization: result of call to VECTOR can now be stack allocated.
997 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
998 as long as the resulting array is one-dimensional and has a known
999 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1000 length of the list matches the known length of the vector does not
1001 allocate the list as an intermediate step. Ditto for VECTOR and simple
1003 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1004 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1005 known element type, and is known to be simple and one dimensional.
1006 * improvement: SBCL now emits a compiler note where stack allocation was
1007 requested but could not be provided (not in all cases, unfortunately)
1008 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1009 * improvement: pretty-printing loop has been implemented properly. (thanks
1010 to Tobias Rittweiler)
1011 * documentation: CLOS slot typechecing policy has been documented.
1012 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1013 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1014 pointer, leading to memory faults. (thanks to Bart Botta)
1015 * bug fix: better floating point exception handling on x86/OpenBSD.
1016 (thanks to Josh Elsasser)
1017 * bug fix: exit status from QUIT when called under --script was lost
1018 (reported by Hubert Kauker)
1019 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1020 same implementation of FILL to initialize the array, even if a more
1021 efficient one was available (reported by Stas Boukarev, thanks to
1023 * bug fix: potential miscompilation of array stack allocation on x86 and
1024 x86-64. (reported by Time Tossavainen)
1025 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1026 result in their subforms being treated as top level forms. (reported by
1028 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1029 than a machine register could leave garbage in the high bits of the
1030 result register (bug 316325).
1031 * bug fix: disable address space randomization Linux/x86-64 as well,
1032 not just x86-64. (reported by Ken Olum)
1033 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1034 generate incorrect code.
1035 * bug fix: #201; type inference for CONS and ARRAY types could derive
1036 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1037 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1038 could not be assigned to or bound with PROGV. (reported by Lorenz
1040 * bug fix: the value of CL:- in the inspector was the previous expression
1041 evaluated rather than the expression being evaluated.
1042 * bug fix: constants can no longer be locally declared special.
1043 * bug fix: signals delivered to threads started from foreign land (read:
1044 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1045 thread by blocking all signals and resignalling.
1046 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1047 from :INITFORM, if any.
1049 changes in sbcl-1.0.28 relative to 1.0.27:
1050 * a number of bugs in cross-compilation have been fixed, with the ultimate
1051 result that building under (at least) clisp should be much more reliable.
1052 * minor incompatible changes: echo-streams now propagate unread-char to the
1053 underlying input stream, and no longer permit unreading more than one
1055 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1056 frames, allowing for instance more reliable backtraces.
1057 * improvement: the debugger REPL can now reference lexical variables
1058 by name directly for code compiled with (DEBUG 3).
1059 * improvement: errors from malformed declarations now have better source
1060 paths associated with them. (thanks to Tobias Rittweiler)
1061 * optimization: faster local calls on x86/x86-64
1062 * bug fix: some error messages for out-of-bound array indexes confused the
1063 index and the bound. (thanks to Stas Boukarev)
1064 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1066 * bug fix: running regressions tests in shells without OSTYPE set now works.
1067 (reported by Harald Hanche-Olsen)
1068 * bug fix: more robust static space exhaustion signalling from
1069 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1070 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1071 docstring away instead of storing it under names such as (LAMBDA (X)).
1072 (reported by Leslie Polzer)
1073 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1074 (thanks to Ole Arndt for the patch)
1075 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1076 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1077 potentially-invalid effective methods in its cache.
1078 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1079 instances as well (thanks to Paul Khuong)
1080 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1081 SB-POSIX:WAITPID and their C equivalents.
1082 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1084 changes in sbcl-1.0.27 relative to 1.0.26:
1085 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1086 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1087 * improvement: the system either recovers from stack exhaustion or dies
1088 properly as opposed to leaving the user uncertain of whether the handler
1089 trampled on some random memory next to the stack or having to rely on
1090 --lose-on-corruption (which is still a good idea to use in production
1091 because stack exhaustion can happen in signal handlers which will likely
1093 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1094 1.0.25.37, reported by Harald Hanche-Olsen)
1095 * bug fix: work around signal delivery bug in darwin (regression from
1096 1.0.25.44, reported by Sidney Markowitz)
1097 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1099 changes in sbcl-1.0.26 relative to 1.0.25:
1100 * incompatible change: an interruption (be it a function passed to
1101 INTERRUPT-THREAD or a timer function) runs in an environment where
1102 interrupts can be enabled. The interruption can use
1103 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1104 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1105 potentially running out of stack. Keep in mind that in the absence
1106 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1107 acquiring a lock can enable interrupts.
1108 * incompatible change: GC-OFF and GC-ON are removed, as they were
1109 always unsafe. Use WITHOUT-GCING instead.
1110 * new feature: runtime option --disable-ldb
1111 * new feature: runtime option --lose-on-corruption to die at the
1112 slightest hint of possibly non-recoverable errors: running out of
1113 memory, stack, alien stack, binding stack, encountering a memory
1114 fault, etc. In the absence of --lose-on-corruption a warning is
1116 * enhancement: detect binding stack exhaustion
1117 * enhancement: detect alien stack exhaustion on x86/x86-64
1118 * improvement: generally more stable and reliable interrupt handling
1119 * improvement: there is a per thread interruption queue,
1120 interruptions are executed in order of arrival
1121 * improvement: a repeating timer reschedules itself when the it has
1122 finished, but expiration times are spaced equally. If an
1123 expiration time is in the past it will trigger after a short grace
1124 period that may give a chance to other things to run.
1125 * optimization: slightly faster gc on multithreaded builds
1126 * optimization: faster WITHOUT-GCING
1127 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1128 important locks so that the debugger/handler doesn't produce
1129 recursive errors or deadlock.
1130 * bug fix: real-time signals are not used anymore, so no more
1131 hanging when the system wide real-time signal queue gets full.
1132 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1134 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1135 * bug fix: fix random memory faults related to interrupts on alpha
1136 * bug fix: fix random memory faults related to interrupts on sparc
1137 * bug fix: fix deadlocks related to starting threads
1138 * bug fix: fix deadlines on locks on futex platforms
1139 * bug fix: restore errno in signal handlers
1140 * bug fix: fix deadlocks related to hash tables
1141 * bug fix: fix deadlocks in pcl
1143 changes in sbcl-1.0.25 relative to 1.0.24:
1144 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1145 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1146 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1147 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1148 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1149 better name and does not return values so stale on multiprocessor systems.
1150 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1152 * improvement: unithread builds keep track of MUTEX-VALUE.
1153 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1154 stream anymore making it thread safe to have a concurrent reader and
1155 a writer, for instance, in a pipe.
1156 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1157 arguments, making compiler-macros for SETF-functions able to inspect
1158 their constant arguments.
1159 * improvement: COMPILE-FILE reports times with millisecond accuracy
1160 (thanks to Luis Oliveira)
1161 * optimization: CHAR-CODE type derivation has been improved, making
1162 TYPEP elimination on subtypes of CHARACTER work better. (reported
1163 by Tobias Rittweiler, patch by Paul Khuong)
1164 * bug fix: setting alien structure fields of type struct by value now
1165 computes the right offset for the memory copy.
1166 * bug fix: compilation problem involving inlined calls to aliens with
1167 result type VOID. (reported by Ken Olum)
1168 * bug fix: #235a; sequential inline expasion in different policies no
1169 longer reuses the functional from the previous expansion site.
1170 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1171 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1172 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1173 cause an implied type redefinition. Regression from 1.0.21.29.
1174 * bug fix: sign-extension of small signed return values now works with C
1175 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1176 * improvements to the Windows port:
1177 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1178 Westfold, thanks to Rudi Schlatte)
1180 changes in sbcl-1.0.24 relative to 1.0.23:
1181 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1182 vector of a multidimensional SIMPLE-ARRAY.
1183 * new feature: the system now signals a continuable error if standard
1184 readtable modification is attempted. (thanks to Tobias Rittweiler)
1185 * new feature: DIRECTORY has been extended with a non-standard keyword
1186 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1187 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1188 has been robustified and documented better. (thanks to Robert Goldman)
1189 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1190 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1191 * tradeoff: constant FORMAT control strings are now compiled unless
1192 SPACE > SPEED (previously only when SPEED > SPACE.)
1193 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1195 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1197 * bug fix: lexical type declarations are now correctly reported by
1198 SB-CLTL2. (reported by Larry D'Anna)
1199 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1200 using UTF-8 as external format. (thanks to Luis Oliveira)
1201 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1202 are signalled correctly. (thanks to Stas Boukarev)
1203 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1204 designator. (thanks to Tobias Rittweiler)
1205 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1206 designator, and returns T instead of the function. (thanks to
1208 * bug fix: direct superclasses of STANDARD-CLASS and
1209 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1210 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1211 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1212 when no class with the named slot yet exists no longer causes a
1213 compile-time style-warning.
1214 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1215 in safe code. (reported by Didier Verna)
1216 * bug fix: #430; nested structure constructors can stack allocate.
1217 * bug fix: on some 64-bit platforms dynamic space size was truncated
1218 to #xffff0000 bytes. (reported by Benjamin Lambert)
1219 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1220 REPL unusable. (reported by Daniel Herring)
1221 * bug fix: return values of READ-SEQUENCE did not take :START into
1222 account on file streams, regressions since 1.0.12.22. (reported by
1223 Thomas Russ, patch by Paul Khuong)
1224 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1225 method specializer used to confuse permuation vector optimization.
1226 * bug fix: system inserted bogus implicit type declarations for local
1227 special variables in DEFMETHOD bodies.
1228 * bug fix: #354; duplicated frames in backtraces due to
1229 non-tail-call-optimized XEPs to functions with return type NIL
1231 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1232 initializes structure object slots according to DEFSTRUCT initforms,
1233 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1234 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1235 (reported by Bruno Haible and Stephen Wilson)
1236 * bug fix: #395; fill-pointer output streams used now support
1237 element-type BASE-CHAR as well.
1238 * bug fix: compiler error when attempting to derive return value of
1239 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1241 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1243 * bug fix: Mac OS X binaries should now be portable between Leopard
1246 changes in sbcl-1.0.23 relative to 1.0.22:
1247 * enhancement: when disassembling method functions, disassembly
1248 for the associated fast function is also produced.
1249 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1251 * optimization: printing with *PRINT-PRETTY* true is now more
1252 efficient as long as the object being printed doesn't require
1253 special handling by the pretty printer.
1254 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1255 now interact correctly with type declarations.
1256 * partial bug fix: PCL detects infinite recursion during wrapper
1257 validation. (thanks to Attila Lendvai)
1258 * bug fix: #426; nested function calls are inlined properly.
1259 Previously if FOO was an inline function, in calls of the form
1260 (FOO (FOO ...)) the outer call was not inlined.
1261 * bug fix: long long arguments passed in registers to alien
1262 functions on PowerPC Linux and NetBSD are now handled correctly
1263 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1265 changes in sbcl-1.0.22 relative to 1.0.21:
1266 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1267 for the shared object in the current directory, but passes the native
1268 namestring of the designated pathname to the operation system's shared
1269 object loading function as-it.
1270 * minor incompatible change: --disable-debugger toplevel option now takes
1271 effect before processing of initialization files and --eval or --load
1273 * new feature: new commandline argument: --script, which supports
1274 shebang lines. See documentation for details. (based on work by
1276 * new feature: SAVE-LISP-AND-DIE can save current values of
1277 --dynamic-space-size and --control-stack-size in the executable core,
1278 causing it to skip normal runtime option processing. See documentation
1279 for details. (thanks to Zach Beane)
1280 * enhancement: inoccous calls to EVAL or generic functions dispatching
1281 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1282 * enhancement: the system no longer resignals errors from --load and
1283 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1284 associated with the original error to be lost. (thanks to Ariel
1286 * enhancement: :DONT-SAVE keyword argument has been added to
1287 LOAD-SHARED-OBJECT for controlling interaction with
1288 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1289 the effects of an earlier LOAD-SHARED-OBJECT call.
1290 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1291 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1292 provided. (reported by Cedric St-Jean)
1293 * bug fix: circularity handling in the reader did not treat raw
1294 structure slots correctly. (reported by Cedric St-Jean)
1295 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1296 file descriptors when there were none.
1297 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1298 was broken. (reporteed by Willem Broekema)
1299 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1300 pathnames without a directory.
1301 * bug fix: COMPILE-FILE did not warn about undefined variable
1302 references at toplevel, and LOAD of the resulting fasl did
1303 not signal an error.
1304 * bug fix: functions with non-required arguments used to end up with
1305 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1306 * bug fix: redefining a function with non-required arguments didn't
1307 update the system's knowledge about its call signature properly.
1308 * bug fix: fixed #431; incompatible alien record type redefinitions
1309 are detected and handled. (reported by Neil Haven)
1310 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1311 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1313 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1314 after alien stack frames.
1315 * bug fix: strings passed to mk{s,d}temp lacked null termination
1317 changes in sbcl-1.0.21 relative to 1.0.20:
1318 * new feature: the compiler is able to track the effective type of a
1319 generic function across method addition and removal.
1320 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1321 appropriately typed structure slots without locking.
1322 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1323 information like those gathered by TIME using a programming-friendly
1325 * new feature: TIME reports time taken even if the form performs a
1326 non-local transfer of control.
1327 * enhancement: reduced conservativism on GENCGC platforms: on
1328 average 45% less pages pinned (measured from SBCL self build).
1329 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1330 mutate constant symbols or violate declaimed type of the symbol.
1331 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1332 sleeping on the semaphore in heavily contested semaphores.
1333 * bug fix: semaphores and condition variables were not interrupt
1335 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1336 owned by other threads anymore.
1337 * bug fix: FIND on lists called KEY outside the specified
1338 subsequence. (reported by budden)
1339 * bug fix: LOG doesn't use single-float intermediate results when
1340 given mixed integer and double-float arguments, leading to better
1341 precision. (reported by Bob Felts)
1342 * bug fix: LOG with base zero returned values of inconsistent type.
1344 changes in sbcl-1.0.20 relative to 1.0.19:
1345 * minor incompatible change: OPTIMIZE qualities
1346 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1347 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1348 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1349 * documentation: some slot access efficiency guidelines have been
1350 added to the user manual.
1351 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1352 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1353 as ASSOC and MEMEBER.
1354 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1355 to more efficient EQ-comparison versions more often.
1356 * optimization: enhanced derivation of DOLIST iteration variable type
1358 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1360 * optimization: runtime lookup of function definitions can be
1361 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1362 * optimization: compiler is able to derive the return type of
1363 (AREF (THE STRING X) Y) as being CHARACTER.
1364 * optimization: CLRHASH on empty hash-tables no longer does pointless
1365 work. (thanks to Alec Berryman)
1366 * optimization: REPLACE deftransforms don't punt when :START1 or
1368 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1369 no longer emits a code deletion note. (reported by Andrew
1371 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1372 functions with an odd number of &OPTIONAL arguments, a &REST
1373 argument, and one or more &KEY arguments at the call site.
1374 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1375 arguments appeared at call sites as well.
1376 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1377 READ-LINE &co can no longer read from them afterwards. (reported
1379 * bug fix: fixed #427: unused local aliens no longer cause compiler
1380 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1382 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1383 alien-stack leakage. (reported by Andy Hefner)
1384 * bug fix: PROGV signals an error when an attempt to violate declared
1385 type of a variable or bind a constant is made.
1386 * bug fix: SET signals an error when an attempt to violate declared
1387 type of a variable is made.
1388 * bug fix: restart computation during the execution of a restart
1389 test function no longer causes infinite recursion. (reported by
1391 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1392 signals an error. (thanks to Pierre Mai)
1393 * bug fix: EXPORT left symbol unexported in conflict situations.
1394 (thanks to Michael Weber)
1395 * bug fix: correctly handle name conflicts involving CL:NIL.
1396 (thanks to Michael Weber)
1397 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1398 conflicts arising from USEing package with conflicting symbols
1399 correctly. (thanks to Michael Weber)
1401 changes in sbcl-1.0.19 relative to 1.0.18:
1402 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1403 warnings that go otherwise unhandled will be muffled if they are
1404 of the type that's the value of this variable.
1405 * optimization: stack allocation is slightly more efficient on x86
1407 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1408 where a raw slot always is initialized using the initform whose
1409 type is not know sufficiently well a compile-time are now compiled
1410 correctly. (reported by John Morrison)
1411 * bug fix: compiler no longer makes erronous assumptions in the
1412 presence of non-foldable SATISFIES types.
1413 * bug fix: stack analysis missed cleanups of dynamic-extent
1414 arguments in non-let-converted calls to local functions.
1415 * improvements to the Windows port:
1416 ** adjusted address spaces for building on both Win32 and
1417 Win64. (thanks for John Connors)
1418 * fixed some bugs revealed by Paul Dietz' test suite:
1419 ** interval arithmetic during type derivation used inexact integer
1420 to single-float coercions.
1421 ** arithmetic operations involving large integers and single
1422 floats give the same results in compiled and interpreted code.
1423 ** deriving the result type of COERCE no longer signals an error
1424 if the derived type of the second argument is a MEMBER type
1425 containing invalid type specifiers.
1426 ** ADJOIN with constant NIL as second argument works correctly.
1427 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1429 changes in sbcl-1.0.18 relative to 1.0.17:
1430 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1431 profiles only the current thread.
1432 * minor incompatible change: changes to SYMBOL-VALUE of constants
1433 defined with DEFCONSTANT now signal an error.
1434 * enhancement: SB-SPROF now has support for wallclock profiling,
1435 and is also able to profile specific threads. REPORT output
1436 has also additional sorting options.
1437 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1439 * optimization: structure allocation has been improved
1440 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1441 ** out of line constructors are ~10% faster.
1442 ** inline constructors are ~15% faster.
1443 ** inline constructors are capable of dynamic extent allocation
1444 (generally on x86 and x86-64, in some cases on other platforms
1446 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1448 * optimization: file compiler is now able to coalesce non-circular
1449 lists, non-base strings, and bit-vectors. Additionally, constants
1450 are never referenced through SYMBOL-VALUE at runtime.
1451 * optimization: code defining methods on PRINT-OBJECT (and other
1452 generic functions in the COMMON-LISP package) now loads faster.
1453 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1455 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1456 fasl is now deleted. (reported by Attila Lendvai)
1457 * bug fix: READ-LINE always returned NIL for the last line in files.
1458 (reported by Yoshinori Tahara)
1459 * bug fix: more accurate disassembly annotations of foreign function
1460 calls. (thanks to Andy Hefner)
1461 * bug fix: trimming non-simple strings and non-string string
1462 designators when the there is nothing to trim works properly.
1463 (thanks to James Knight)
1464 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1465 (thanks to Travis Cross)
1466 * fixed some bugs revealed by Paul Dietz' test suite:
1467 ** NIL is a valid function name (regression at 1.0.13.38)
1468 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1469 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1470 fill pointers properly (regression at 1.0.12.23)
1471 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1472 displacement indices properly (regression at 1.0.12.23)
1474 changes in sbcl-1.0.17 relative to 1.0.16:
1475 * temporary regression: user code can no longer allocate closure
1476 variable storage on stack, due to bug 419 without explicitly
1477 requesting it. Please consult sbcl-devel for advice if you need to
1478 use this feature in the meanwhile.
1479 * new feature: runtime argument --control-stack-size can be used to
1480 adjust thread default control stack size.
1481 * enhancement: improved TIME output
1482 ** all times are reported using the measured accuracy (milliseconds
1483 for real and GC times, microseconds for everything else.)
1484 ** processor cycle counts on x86 and x86-64.
1485 ** interpreted forms are counted for both evaluator modes.
1486 ** number of lambdas converted by the compiler is reported.
1487 ** CPU percentage report (computed from real and total run time.)
1488 ** more comprehensive run time reporting, using a condenced format
1489 ** interperted form, lambda, and page fault counts are omitted
1491 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1493 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1494 * optimization: two argument forms of LAST are upto ~10% faster
1495 in normal SPEED policies.
1496 * optimization: NCONC no longer needs to heap cons its &REST list
1497 in normal SPEED policies.
1498 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1499 to Sidney Markowitz)
1500 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1501 regression since 1.0.9.1. (thanks to Eric Marsden)
1502 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1503 since 1.0.15.36. (thanks to Paul Khuong)
1504 * bug fix: LAST when always returned the whole list when given a bignum
1505 as the second argument.
1506 * bug fix: dynamic extent allocation of nested lists and vectors
1507 could leak to otherwise accessible parts.
1508 * bug fix: invalid optimization of heap-allocated alien variable
1510 * bug fix: fasl header checking is less vulnerable to different
1511 platform word lengths.
1512 * bug fix: more correct assembler syntax for GNU binutils
1513 2.18.50.0.4 support. (thanks to Marijn Schouten)
1514 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1516 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1517 declarations) successfully. (reported by Attila Lendvai)
1519 changes in sbcl-1.0.16 relative to 1.0.15:
1520 * minor incompatible change: revert the changes to sb-posix's error
1521 signaling added in 1.0.14.
1522 * minor incompatible change: change PROBE-FILE back to returning
1523 NIL whenever we can't get a truename, as was the case before 1.0.14.
1524 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1525 inherits from ERROR instead of just CONDITION.
1526 * new feature: SB-INTROSPECT can provide source locations for instances
1527 as well. (thanks to Tobias Rittweiler)
1528 * optimization: binding special variables now generates smaller code
1529 on threaded platforms.
1530 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1531 and cases where no :TEST is given but the compiler can infer that
1532 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1533 * optimization: better LOGNOT on fixnums.
1534 * optimization: modular arithmetic for a particular requested width
1535 is implemented using a tagged representation unless a better
1536 representation is available.
1537 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1538 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1539 for wellformedness and returns a specialized vector. (reported by
1540 Francois-Rene Rideau)
1541 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1542 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1543 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1544 unscheduling timer at the same time as another timer fires.
1545 * bug fix: don't reschedule timers for dead threads.
1546 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1547 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1548 bogus errors if select() was interrupted.
1549 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1551 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1552 * enhancement: cleaner backtraces for interactive interrupts, as
1553 well as other cases where the interesting frames used to be
1554 obscured by interrupt handling frames.
1555 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1556 now supported, and tracing a whole package using (TRACE "FOO") now
1557 traces SETF-functions as well.
1558 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1559 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1560 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1561 * unreadably printed representation of hash-tables now includes
1563 * bug fix: partially fixed #188: type propagation from assignments
1564 is now more efficient.
1565 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1566 'DOUBLE-FLOAT) are not flushable.
1567 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1568 full address of the object, and none of the tag bits.
1569 * bug fix: readably printing hash-tables now respects other printer
1570 control variables. (reported by Cedric St-Jean)
1571 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1572 keyword with MAKE-HASH-TABLE.
1573 * bug fix: export SB-POSIX:MKSTEMP.
1574 * bug fix: SORT was not interrupt safe.
1575 * bug fix: XREF accounts for the last node of each basic-block as
1577 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1578 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1579 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1580 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1581 create obsolete instances in the case of redefinition or
1582 obsoletion of a superclass. (thanks to Andy Hefner)
1583 * bug fix: Support for the Alpha architecture has been revived; it had
1584 suffered somewhat from lack of maintenance since sbcl-1.0.
1585 * improvements to the Windows port:
1586 ** The system detects the codepage to use at startup, instead of
1587 using the value from the saved core. (thanks to Kei Suzuki)
1589 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1590 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1591 (see documentation for details.)
1592 * revived support for OpenBSD (contributed by Josh Elsasser)
1593 * partially fixed bug #108: ROOM no longer suffers from occasional
1594 (AVER (SAP= CURRENT END)) failures.
1595 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1596 bodies no longer cause a WARNING to be signalled. (reported by
1598 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1599 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1600 the bug in TRUNCATE.) (reported by Michael Weber)
1601 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1602 no samples. (reported by Andy Hefner)
1603 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1604 no longer appear as (NIL ...) frames in backtraces.
1605 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1606 is now actually exported from SB-EXT as documented. (reported by
1608 * bug fix: sb-aclrepl now correctly understands how to inspect
1609 single-floats on 64-bit platforms where single-floats are not boxed.
1610 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1611 yet been finalized. (reported by Levente Meszaros)
1612 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1613 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1614 SBCL-specific optimize qualities.
1616 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1617 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1618 an executable in the search path, and does so in the child
1619 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1620 been removed; it can be found in the CVS history, for somebody who
1621 needs that search behavior (see the manual).
1622 * minor incompatible change: compiler policy re. weakening type
1623 checks has changed: now type checks are weakened only if SAFETY < 2
1625 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1626 unparsing of directory pathnames as files. Analogously,
1627 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1628 filename to parse into a directory pathname.
1629 * enhancement: implicit generic function creation now signals a
1630 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1631 users can bind handlers for and muffle around calls to LOAD.
1632 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1633 to be used (using the default stream external format), and allows
1634 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1635 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1636 strings and vectors whose element-type or simplicity is not fully
1637 known at compile-time.
1638 * optimization: STRING-TRIM and related functions no longer allocate
1639 a new string when no trimming needs to be performed. These functions
1640 are also faster than before when the input string has been declared
1642 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1643 * optimization: READ-LINE is significantly faster for files containing
1645 * optimization: non-open coded uses of character comparison operators
1646 (e.g. char=) no longer cons when called with more than one parameter
1647 on platforms supporting dynamic-extent allocation.
1648 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1649 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1650 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1652 * bug fix: some sequence functions elided bounds checking when
1654 * bug fix: too liberal weakening of union-type checks when SPEED >
1656 * bug fix: more bogus fixnum declarations in ROOM implementation
1659 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1660 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1661 :SYNCHRONIZED argument, which makes the hash-table safe for
1662 concurrent accesses (but not iteration.) See also:
1663 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1664 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1665 * optimization: CONCATENATE on strings is an order of magnitude faster
1666 in code compiled with (> SPEED SPACE).
1667 * optimization: SUBSEQ is ~50% faster on lists.
1668 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1669 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1670 END is smaller then START.
1671 * bug fix: SB-PROFILE will no longer report extra consing for nested
1672 calls to profiled functions.
1673 * bug fix: ROOM implementation had bogus fixnum declarations which
1674 could cause type-errors when calling ROOM on large images.
1675 * bug fix: if file compilation is aborted, the partial fasl is now
1676 deleted, and COMPILE-FILE returns NIL as the primary value.
1677 * bug fix: number of thread safety issues relating to SBCL's internal
1678 hash-table usage have been fixed.
1679 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1680 be returned from its body when the values were being returned
1681 using unknown-values return convection and the W-P-O was wrapped
1682 inside an UNWIND-PROTECT.
1683 * bug fix: sb-posix should now compile again under Windows, enabling
1684 slime to work again.
1686 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1687 * incompatible change: hash-table accessor functions are no longer
1688 automatically protected by locks. Concurrent accesses on the same hash-table
1689 from multiple threads can give inconsistent results or even corrupt the
1690 hash-table completely. Multi-threaded applications should do their own
1691 locking at the correct granularity. In the current implementation it is
1692 still safe to have multiple readers access the same table, but it's not
1693 guaranteed that this property will be maintained in future releases.
1694 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1695 and will signal an error at runtime.
1696 * enhancement: SB-THREAD package now exports a semaphore interface.
1697 * enhancement: CONS can now stack-allocate on x86 and
1698 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1700 * enhancement: nested lists can now be stack allocated on
1701 platforms providing stack allocation support.
1702 * enhancement: dynamic-extent support has been extended to support
1703 cases where there are multiple possible sources for the stack
1705 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1706 if the mutex is uncontested on Linux.
1707 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1708 as specified by the CLHS. (thanks to Tobias Rittweiler)
1709 * bug fix: NaN comparison now works on x86-64.
1710 * bug fix: CLOSE :ABORT T on a stream with pending output now
1712 * bug fix: instances of non-standard metaclasses using standard
1713 instance structure protocol sometimes missed the slot type checks
1715 * bug fix: known functions can be inlined in high-debug code.
1717 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1718 * minor incompatible change: the MSI installer on Windows no longer
1719 associates .lisp and .fasl files with the installed SBCL.
1720 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1721 on Windows. (thanks to Luis Oliviera)
1722 * new feature: SB-CLTL2 contrib module now implements
1723 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1724 * optimization: scavenging weak pointers is now more efficient,
1725 requiring O(1) instead of O(N) per weak pointer to identify
1726 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1727 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1728 method bodies using constant slot-names when the first argument is
1729 a specializer parameter for the method.
1730 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1731 names, when the class of the instance is a direct instance
1732 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1733 as slow as the constant slot-name case.)
1734 * optimization: member type construction is now O(N) instead
1736 * optimization: UNION and NUNION are now O(N+M) for large
1737 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1739 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1740 now more readable in environments like Slime which display it.
1741 (thanks to Tobias C. Rittweiler)
1742 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1743 was able to infer the correct argument type for the object on which
1744 the CAS operation was being performed.
1745 * bug fix: copy propagation interfered with parallel assignment
1746 semantics in local calls. (reported by Paul Khuong)
1747 * bug fix: the signed modular fixnum shift compiled to wrong code on
1748 x86 and x86-64. (spotted by a slight modification to some of
1751 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1752 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1753 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1754 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1756 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1757 and generic function now print the object identity for anonymous
1758 instances. (thanks to Attila Lendvai)
1759 * enhancement: as an extension to MOP, SBCL now supports SETF of
1760 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1761 (thanks to Attila Lendvai)
1762 * enhancement: sb-cover has an alternate annotation mode which puts
1763 the form annotations at the car of the form, instead of annotating
1764 it completely. The benefit of this mode is that it shows better
1765 which forms were instrumented by the compiler.
1766 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1767 by printer control variables. (reported by Dan Corkill)
1768 * bug fix: system leaked memory when delayed output was performed by
1769 the OS in smaller chunks then expected. (thanks to David Smith)
1770 * bug fix: system leaked memory when file streams were not closed
1772 * bug fix: large objects written to slow streams that were modified
1773 after the write could end up with the modified state written to
1774 the underlying file descriptor.
1775 * bug fix: multiple threads operating in parallel on the same stream
1776 could cause buffer-overflows.
1777 * bug fix: source location information is stored correctly
1778 (broken since 1.0.6). This bug would generally show up as the
1779 Slime debugger highlighting the wrong form when the sldb-show-source
1781 * bug fix: Branch forms are again annotated as branches in the sb-cover
1783 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1784 on x86-64. (reported by Gregory Vanuxem)
1785 * bug fix: EQUALP could return wrong results for structures with raw
1786 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1787 word). (reported by Vjacheslav Fyodorov)
1788 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1791 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1792 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1793 atomic compare-and-swap operations on threaded platforms.
1794 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1795 allows assigning a global minimum value to optimization qualities
1796 (overriding proclamations and declarations).
1797 * enhancement: closed over variables can be stack-allocated on x86
1799 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1801 * optimization: slot definition lookup is now O(1). This speeds up
1802 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1803 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1804 * optimization: ASSOC and MEMBER can now be open-coded for all
1805 combinations of keyword arguments when second argument is constant
1806 and SPEED >= SPACE. In other cases a specialized version is
1808 * bug fix: using obsoleted structure instances with TYPEP and
1809 generic functions now signals a sensible error.
1810 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1811 (reported by Kristoffer Kvello)
1812 * bug fix: backtrace construction is now more careful when making
1813 lisp-objects from pointers on the stack, to avoid creating bogus
1814 objects that can be seen by the GC.
1815 * bug fix: defaulting of values in contexts expecting more than 7
1816 variables now works on x86-64. (reported by Christopher Laux)
1817 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1819 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1820 as the property-list of a symbol.
1821 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1822 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1823 situations requested, are once again file-compileable. (reported
1826 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1827 * MOP improvement: support for user-defined subclasses of
1828 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1829 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1830 the expansion of DEFMETHOD, is responsible for generating a form
1831 which creates a list of specializers when evaluated. Additional
1832 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1833 debugging and introspective support.
1834 * minor incompatible change: the (unsupported) spinlock interface
1835 has changed: free spinlock now has the value NIL, and a held spinlock
1836 has the owning thread as its value.
1837 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1838 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1840 * enhancement: name of a socket-stream is now "a socket" instead of
1841 "a constant string".
1842 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1843 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1844 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1845 for generic functions. (Thanks to Tobias C. Rittweiler)
1846 * optimization: bignum printing speed has been improved by 20-40%
1847 (depending on the bignum size.)
1848 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1850 * bug fix: the cache used by the CLOS to store precomputed effective
1851 methods, slot offsets, and constant return values is now thread and
1853 * bug fix: generic function dispatch function updating is now thread
1854 and interrupt safe (in the sense that the known issues have been
1856 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1857 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1858 * bug fix: asdf systems with dependencies to the SB-POSIX or
1859 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1860 * bug fix: interrupt safety of applicable method computation has been
1863 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1864 * new contrib: sb-cover, an experimental code coverage tool, is included
1865 as a contrib module.
1866 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1867 significantly faster.
1868 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1869 produce more efficient code on x86-64 if the compiler can determine
1870 that (+ INDEX <constant>) does not require a bounds check and FOO
1871 has an element type at least 8 bits wide.
1872 * enhancement: a new, experimental synchronous timeout facility is
1873 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1874 * enhancement: when a symbol name conflict error arises, the
1875 conflicting symbols are always printed with a package prefix.
1876 (thanks to Kevin Reid)
1877 * enhancement: stepping is now once again supported on the SPARC and
1878 MIPS platforms. (It is also now more likely to work on CheneyGC
1880 * enhancement: sb-sprof can now also track and report accurate call
1882 * bug fixes: the treatment of non-standard subclasses of
1883 SB-MOP:SPECIALIZER is more correct.
1884 * incompatible change: PURIFY no longer copies the data from the
1885 dynamic space into the static and read-only spaces on platforms
1886 that use the generational garbage collector
1887 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1889 * bug fix: GC race condition occasionally resulting in crashes with
1890 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1892 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1894 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1895 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1896 * bug fix: an asynchronous interrupt could previously leave the
1897 system running with GC inhibited.
1898 * bug fix: a DECLARE form evaluated at top-level now causes an error
1899 rather than silently (or verbosely) returning NIL.
1900 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1901 result in a error being signalled due to source form lookup errors.
1902 (reported by Peter Graves)
1904 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1905 * incompatible change: removed writer methods for host-ent-name,
1906 host-ent-addresses -- changing the values did not update the DNS
1908 * minor incompatible change: changed experimental JOIN-THREAD interface
1909 * documentation: the manual now lists reader and writer methods
1910 in class slot documentation sections. (thanks to Richard M Kreuter)
1911 * documentation: unwinding from asyncronous events has been
1912 documented as unsafe.
1913 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1914 in multithreaded application code.
1915 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1916 platforms. (thanks to James Anderson for the optimization hint)
1917 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1919 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1920 variants no longer cons.
1921 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1922 their NOT- variants no longer cons.
1923 * optimization: EQUAL hash tables no longer use SXHASH for objects
1924 of all data types, but instead use an EQL hash for types for which
1925 EQUAL is the same as EQL.
1926 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1927 are significantly faster.
1928 * optimization: new STRING-OUTPUT-STREAM implementation is much
1929 faster for large outputs and conses 30% less on average.
1930 * enhancement: XREF information is now collected for references made
1931 to global variables using SYMBOL-VALUE and a constant argument.
1932 * enhancement: SIGINT now causes a specific condition
1933 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1934 * bug fix: FILE-POSITION used to signal an error in some cases where
1935 ANSI requires it to return NIL.
1936 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1937 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1938 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1940 * bug fix: bad type declaration in the CLOS implementation has
1941 been fixed. (reported by James Anderson)
1942 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1943 (thanks to Lutz Euler)
1944 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1945 required by the CLHS. (reported by Samium Gromoff)
1946 * bug fix: dead unbound variable references now signal an error.
1947 (reported by Marco Monteiro)
1948 * bug fix: / with an unused value was being deleted in safe code.
1949 (thanks to Marco Monteiro and Kevin Reid)
1950 * bug fix: number of characters that can be written onto a single
1951 line in a file is unlimited.
1952 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1953 been fixed by inhibiting interrupts for when GC is disabled.
1954 * bug fix: some interrupt safety issues with GETHASH, (SETF
1955 GETHASH), CLRHASH and REMHASH have been fixed.
1956 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1957 specifier no longer causes infinite recursion.
1958 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1959 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1960 * bug fix: an &environment argument with the correct variable information
1961 is passed to macros that are expanded during byte compilation.
1962 (reported by Samium Gromoff)
1963 * bug fix: a logic error was causing the hash function for bignums to
1964 have excessive amounts of collisions. (reported by Faré Rideau)
1965 * bug fix: modifying the contents of an array could change the return
1966 value of SXHASH on that array, which is only allowed for strings
1967 and bit vectors. (bug introduced in 0.9.16)
1968 * improvement: the x86-64/darwin port now passes all tests (except
1969 for the debugger tests) but should still be considered
1970 experimental until this is fixed.
1971 * improvement: a style-warning is signaled for CASE (etc) clauses with
1972 duplicate keys. (thanks to Kevin Reid)
1973 * improvement: macos/x86 and macos/x86-64 now use mach exception
1974 handlers for dealing with illegal instructions (for trapping and
1975 error handling) and memory protection violations (for GC).
1977 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1978 * new platform: experimental support for x86-64/darwin (MacOS).
1979 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1980 and getnameinfo sockets functions are used instead of gethostbyaddr
1981 and gethostbyname, on platforms where the newer functions are available.
1982 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1984 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1985 don't print the startup banner, but behave as if --noinform was passed
1986 as a command line argument. (thanks to Kevin Reid)
1987 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1988 * optimization: code using alien values with undeclared types is much faster.
1989 * optimization: the compiler is now able to open code SEARCH in more cases.
1990 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1991 * bug fix: using standardized COMMON-LISP special variables as loop
1992 variables no longer signals bogus package lock violations. (reported
1994 * bug fix: declaring local loop variables to be of a range-limited type
1995 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1996 (reported by Andras Simon)
1997 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1998 bugs remain on x86-64.)
1999 * bug fix: the #= and ## reader macros now interact reasonably with
2000 funcallable instances.
2001 * bug fix: type-checks for function arguments were compiled using the
2002 compiler policy settings of the wrong lexical environment (in 1.0.2
2004 * bug fix: SHADOW accepts characters as string designators, as required
2005 by the spec (thanks to Eric Marsden)
2006 * bug fix: fixed GC safety issues when foreign functions are called with
2007 non-base strings as arguments
2008 * bug fix: more consistent error output for fatal-compiler-warnings, like
2010 * bug fix: functions with proper names were showing up as NIL in
2011 backtraces (reported by Edi Weitz, regression in 1.0.2)
2013 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2014 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2015 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2016 produce more efficient code on the x86 if the compiler can determine
2017 that (+ INDEX <constant>) does not require a bounds check and FOO
2018 has an element type at least 8 bits wide.
2019 * bug fix: references to undefined variables are handled the same way
2020 in toplevel forms as in the normal compiler
2021 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2023 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2024 (thanks to Jon Buller)
2025 * improvement: faster compilation times for complex functions
2026 * improvement: added readlink support to SB-POSIX (thanks to Richard
2029 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2030 * improvement: experimental support for mach exception handling on
2031 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2033 * improvement: support for GBK external format.
2034 (thanks to Chun Tian (binghe))
2035 * improvement: the debugger now displays variables that have been closed
2036 over, in code compiled with (DEBUG 2) or higher
2037 * improvement: support for executable cores on NetBSD (thanks to
2039 * new feature: added a RESTART-FRAME debugger command
2040 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2041 be used to provide an implementation for FILE-POSITION on Gray streams
2042 (thanks to Eric Marsden)
2043 * new feature: add syslog, openlog and closelog support to SB-POSIX
2044 (thanks to Richard Kreuter)
2045 * optimization: the function call overhead in code compiled with
2046 a high DEBUG optimization setting is significantly
2047 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2048 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2049 (thanks to Tony Martinez)
2050 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2051 evaluated once (reported by Kevin Reid)
2052 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2053 works again (thanks to Kilian Sprotte)
2054 * bug fix: an error is signaled for tagbodies with duplicate tags
2055 (thanks to Stephen Wilson)
2056 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2057 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2058 stack frames from alien callbacks.
2059 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2060 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2061 65k pages (thanks to David Woodhouse)
2062 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2064 changes in sbcl-1.0.1 relative to sbcl-1.0:
2065 * new platform: FreeBSD/x86-64, including support for threading.
2066 * new feature: the compiler stores cross-referencing information
2067 about function calls (who-calls), macroexpansion (who-macroexpands)
2068 and special variables (who-binds, who-sets, who-references) for code
2069 compiled with (< SPACE 3). This information is available through the
2070 sb-introspect contrib.
2071 * new feature: users may subclass SEQUENCE, and have instances of
2072 these classes interoperate with standard Common Lisp functions if
2073 a number of methods are defined. (This feature is experimental
2074 and the interface subject to change based on feedback from SBCL
2075 users and the general community)
2076 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2077 x86/x86-64, rather than the previous fixed depth of 8
2078 * improvement: another pthread back-end of mutex "pthread-futex".
2079 * bug fix: non-ascii command-line arguments are processed correctly
2080 (thanks to Yaroslav Kavenchuk)
2081 * bug fix: non-required arguments were not passed correctly when a method
2082 defined using DEFMETHOD was called from a mop-generated method using
2083 CALL-NEXT-METHOD (reported by Pascal Costanza)
2084 * bug fix: recursion is now permitted in accessors through
2085 SLOT-UNBOUND. (reported by Pascal Costanza)
2086 * bug fix: an error was signaled at startup if the HOME environment
2087 variable was defined, but had an empty value (reported by Peter Van Eynde)
2088 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2089 signal a PROGRAM-ERROR, not a BUG.
2090 * bug fix: SB-POSIX:READDIR works when built with large file support.
2091 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2093 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2094 for better automatic indentation support. (thanks to Matt Pillsbury)
2095 * optimization: loading generic functions no longer takes O(n^2) time,
2096 proportional to the amount of methods in the generic function
2097 (reported by Todd Sabin and Jeremy Brown)
2098 * optimization: the FIND and POSITION family of sequence functions
2099 are significantly faster on arrays whose element types have been
2101 * improvements to the Windows port:
2102 ** Intermittent heap corruption problems have been fixed. (thanks
2103 to Alastair Bridgewater)
2104 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2106 ** Lisp is able to unwind foreign exception frames from alien
2107 callbacks. (thanks to Alastair Bridgewater)
2109 changes in sbcl-1.0 relative to sbcl-0.9.18:
2110 * improvement: experimental support for threading on FreeBSD/x86.
2111 (thanks to NIIMI Satoshi)
2112 * improvement: runtime option --dynamic-space-size can be used
2113 to set the size of the dynamic space reserved on startup.
2114 * improvement: floating point modes in effect are now saved in
2115 core, and restored on startup.
2116 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2117 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2118 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2119 threads are not running after *SAVE-HOOKS* have run.
2120 * improvement: writes to CLOS instance slots are type-checked in code
2121 compiled with (SAFETY 3)
2122 * improvement: floating-point exception handling on FreeBSD (thanks to
2124 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2125 (thanks to Zach Beane)
2126 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2128 * improvement: added support for the Shift-JIS external format.
2129 (contributed by NIIMI Satoshi)
2130 * improvement: callbacks are supported on Linux/PPC. (thanks to
2132 * bug fix: compiler bug triggered by a (non-standard) VALUES
2133 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2134 * bug fix: file compiler no longer confuses validated and already
2135 dumped structurres. (reported by Kaersten Poeck)
2136 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2137 fill-pointer signals a type-error as required. (thanks to
2139 * bug fix: disassemly of funcallable instances works.
2140 * bug fix: single stepping on PPC.
2141 * bug fix: fix thread-safety problems in the type system (generally
2142 manifesting as nonsensical errors like "STRING is a bad type specifier
2143 for sequences" or "The value 1 is not of type FIXNUM")
2144 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2145 (reported by Josip Gracin)
2146 * bug fix: an error is signaled for attempts to displace arrays with
2147 incompatible element types (thanks to Mario Mommer)
2148 * bug fix: more correct handling of wide characters in debug info
2149 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2150 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2151 and don't cause extra consing
2152 * optimization: MAP and MAP-INTO are significantly faster on vectors
2153 whose elements types have been declared.
2154 * Improvements to SB-SPROF:
2155 ** Support for allocation profiling
2156 ** Reduced profiling overhead, especially for long profiling runs
2157 * Improvements to the Windows port:
2158 ** floating point exceptions are now reported correctly.
2159 ** stack exhaustion detection works partially.
2160 ** more accurate GET-INTERNAL-REAL-TIME.
2161 ** better RUN-PROGRAM behaviour in case of errors in the child
2163 ** PROBE-FILE now simplifies pathnames correctly.
2164 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2165 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2166 1st 1970 (although time timezone data will be unreliable).
2167 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2169 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2170 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2171 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2173 * bug fix: two potential GC deadlocks affecting threaded builds.
2174 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2175 returns T (reported by Anton Kazennikov)
2176 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2177 with non-variable places
2178 * bug fix: remove a race condition in the setting of
2179 funcallable-instance functions, this should make threaded CLOS
2180 code more stable against memory faults.
2181 * bug fix: corruption of specials when unbinding is interrupted by an
2182 asynchronous unwind (reported by Hannu Koivisto)
2183 * improvement: the debugger will now also display local variables that
2184 are only used once, for code compiled with a DEBUG optimization quality
2187 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2188 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2189 * incompatible change: External-format support for FFI calls. The
2190 SB-ALIEN:C-STRING no longer implies an ASCII
2191 external-format. Instead the string is subject to external-format
2192 conversion. Additionally return values of type SB-ALIEN:C-STRING
2193 are by default of type (SIMPLE-ARRAY CHARACTER), not
2194 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2195 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2196 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2197 * incompatible change: SB-EXT package no longer contains the
2198 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2199 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2201 * incompatible change: the single-stepper is no longer available
2202 on Alpha, Mips and Sparc platforms.
2203 * minor incompatible change: the direct superclasses of
2204 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2205 not (STANDARD-OBJECT FUNCTION). This makes the
2206 class-precedence-lists of GENERIC-FUNCTION and
2207 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2209 * minor incompatible change: the default stream external format on
2210 non-unicode SBCL is no longer detected from the locale, but is always
2212 * new feature: Add a version of evaluator that uses an interpreter instead
2213 of the compiler. EVAL still uses the compiler by default, to switch it
2214 to use the interpreter, set the value of the variable
2215 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2216 * minor incompatible change: the single-stepper REPL has been merged
2217 with the normal debugger (see the "Stepping" heading of the debugger help
2218 for more details). The debugger command STEP will no longer switch
2219 to the single-stepper REPL.
2220 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2221 for a type now works.
2222 * bug fix: loading of default sysinit file works. (thanks to Leonid
2224 * bug fix: better detection of circularities in the file-compiler.
2225 (reported by Marco Monteiro)
2226 * bug fix: the CL pathname functions now work with files that have
2227 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2228 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2229 systems with Unix98 pty semantics.
2230 * bug fix: ASDF-INSTALL will now work with bsd tar.
2231 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2233 * bug fix: timers expiring in dead threads no longer cause a
2234 type-error (reported by Paul "Nonny Mouse").
2235 * bug fix: thanks to more lightweight single-stepper instrumentation,
2236 code compiled with (DEBUG 3) will compile and execute significantly faster,
2237 and will have more accurate type-inferencing than before
2238 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2239 whose bindings are modified
2240 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2241 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2242 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2243 CL:SOFTWARE-VERSION with proper version
2245 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2246 * feature: implemented the READER-METHOD-CLASS and
2247 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2248 as specified by AMOP.
2249 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2251 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2252 (thanks to Lutz Euler)
2253 * optimization: hashing of general arrays and vectors has been
2254 improved. (reported by Any Fingerhut)
2255 * enhancement: SB-INTROSPECT is now able to find definitions of
2256 profiled functions. (thanks to Troels Henriksen)
2257 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2258 as well, allowing compiler-macros for SETF-functions to expand.
2259 * enhancement: step-instrumentation no longer wraps known
2260 single-value functions with multiple-value context, allowing
2261 better type inference.
2262 * fixed bug #337: use of MAKE-METHOD in method combination now works
2263 even in the presence of user-defined method classes. (reported by
2264 Bruno Haible and Pascal Costanza)
2265 * fixed bug #339(c): if there are applicable methods not part of any
2266 long-form method-combination group, call INVALID-METHOD-ERROR.
2267 (reported by Bruno Haible)
2268 * fixed bug #361: the :FUNCTION initarg in the protocol for
2269 initialization of methods can now be used to override
2270 internally-produced optimized functions. (reported by Bruno
2272 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2273 system-provided lambda expression no longer cause warnings about
2274 unbound #:|pv-table| symbols.
2275 * bug fix: improved the handling of type declarations and the
2276 detection of violations for keyword arguments with non-constant
2278 * bug fix: potentially erronous calls to PATHNAME and
2279 MERGE-PATHNAMES were being flushed in some cases.
2280 (reported by Richard Kreuter)
2281 * bug fix: compiled calls to TYPEP were mishandling obsolete
2282 instances. (reported by James Bielman and Attila Lendvai)
2283 * bug fix: format strings with ~> without matching ~< no longer
2284 trigger an AVER, but signal an understandable error instead.
2285 (reported by Antonio Martinez)
2286 * bug fix: specifying an output-file without a pathname-type for
2287 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2288 of input-file instead of "fasl". (reported by Robert Dodier)
2289 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2290 (reported by James Y Knight).
2291 * bug fix: compiler-macros-function did not consider the environment
2292 argument for shadowing by local functions.
2293 * bug fix: compiler-macros expansion was inhibited by local INLINE
2295 * bug fix: inline expansions of known functions were subject to
2296 step-instrumentation in high debug policies, leading to problems
2297 with type-inference.
2298 * bug fix: compiler failed to differentiate between different CONS
2299 types in some cases.
2300 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2301 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2302 * bug fix: #368: incorrect use of expressed vs. upgraded array
2304 * bug fix: #306a: more precise unions of array types.
2305 * thread-safety improvements:
2306 ** CONDITION-WAIT could return early on Linux, if the thread was
2307 interrupted and subsequently continued with SIGCONT.
2308 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2310 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2311 * added support for the ucs-2 external format. (contributed by Ivan
2313 * minor incompatible change: pretty printing of objects of type
2314 (cons symbol) is, in the default pprint-dispatch-table, now
2315 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2317 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2318 called later in a class's lifetime, possibly as late as when the
2319 first instance of the class is created. Previously,
2320 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2321 class became finalizeable.
2322 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2323 for multibyte external-format streams. (thanks to "vbzoli")
2324 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2325 with :ALLOCATION :CLASS inherited from superclasses of the
2327 * fixed bug: anonymous classes can now be created using the :NAME
2328 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2329 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2330 * fixed bug: core-files saved with :EXECUTABLE T can again be
2331 executed when SBCL_HOME isn't set. (reported by James Knight)
2332 * fixed bug: toplevel LOCALLY forms with declarations could
2333 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2334 * fixed bug: printing from several different threads using different
2335 values of *print-case* could cause invalid output, due to
2336 some internal special variables of the printer not being bound
2337 thread-locally (reported by Max Mikhanosha)
2338 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2339 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2340 (reported by Pascal Costanza)
2341 * fixed bug: FINALIZE-INHERITANCE is called from
2342 REINITIALIZE-INSTANCE on classes when the class has previously
2343 been finalized, as required by AMOP.
2344 * minor code generation optimizations:
2345 ** better register allocation in CLOS dispatching functions
2346 ** overflow detection when coercing signed bytes to fixnums on x86-64
2347 ** is now implemented with one IMUL instruction instead of three shifts
2348 ** more efficient bit-vector access on x86 and x86-64
2349 ** more efficient access to raw structure slots on x86 and x86-64
2350 * fixed some bugs revealed by Paul Dietz' test suite:
2351 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2352 return its argument.
2354 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2355 * feature: thread support on Solaris/x86, and experimental thread support
2357 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2359 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2360 default method for SLOT-UNBOUND.
2361 * minor incompatible change: prevent the user from specializing the
2362 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2363 somewhat counter to the intent of the protocol, I (CSR) think, and
2364 additionally it just doesn't work in SBCL as currently
2365 implemented, thanks to optimizations (that are always valid for
2366 the other three SLOT-VALUEish functions, but not for the setter).
2367 * minor incompatible change: the :SB-LDB feature is now enabled by
2368 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2369 the low-level debugger.
2370 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2371 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2372 down to an SB-SYS:FD-STREAM, allowing direct communication in
2373 more cases. Temporary files and pipes are still used as a fallback
2375 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2376 on the non-reentrant C functions localtime(3) and gmtime(3).
2377 * bug fix: global optimization policy was not visible in LOCALLY and
2379 * bug fix: class objects can be used as specializers in methods.
2380 (reported by Pascal Costanza)
2381 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2382 with a type error. (reported by blitz_ on #lisp)
2383 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2384 failed with a type error. (reported by Pascal Bourguignon)
2385 * bug fix: merging pathnames against defaults with :DIRECTORY
2386 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2387 (reported by James Y Knight)
2388 * bug fix: saving large (>2GB) cores on x86-64 now works
2389 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2390 constant index and a (simple-array (signed-byte 32)) array
2391 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2392 error (patch by Robert J. Macomber)
2393 * feature: TIME now displays the amount of run-time spent in GC
2394 * bug fix: The debugger now does a better job of respecting
2395 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2396 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2397 workaround for bug 403.)
2398 * bug fix: floating point exception handling now works on FreeBSD
2399 (thanks to NIIMI Satoshi)
2400 * fixed some bugs revealed by Paul Dietz' test suite:
2401 ** MISC.641: LET-conversion were not supposed to work in late
2403 * improvements to the Win32/x86 port:
2404 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2405 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2407 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2408 * new feature: source path information is generated for macro-expansion
2409 errors for use in IDE's like Slime (thanks to Helmut Eller)
2410 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2411 * bug fix: compiler does not loop forever on an invalid type in
2413 * improvement: compilation of most CLOS applications is significantly
2415 * optimization: added a limited bytecode compiler for simple toplevel
2416 forms, speeding up compilation and FASL loading
2417 * bug fix: the statistical profiler now properly distinguishes anonymous
2420 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2421 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2422 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2423 into subclasses of the finalized class. Now user calls to
2424 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2425 system return before any subclasses are finalized.
2426 * minor incompatible change: The reader no longer ignores errors
2427 regarding non-existent packages in #+ and #- feature tests.
2428 * new feature: command line options --no-sysinit, --no-userinit to
2429 inhibit loading the corresponding init files
2430 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2431 for sending data through UDP sockets (thanks to François-René Rideau)
2432 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2433 error is signalled instead (thanks to François-René Rideau)
2434 * minor incompatible change: Error signalling behaviour of lexical
2435 operations violating package locks has changed slightly. Refer to
2436 documentation on package locks for details.
2437 * enhancement: EVAL can process IF-expressions without resorting to the
2439 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2440 constant-folded properly due to missing out-of-line functions.
2441 (reported by Mika Pihlajamäki)
2442 * bug fix: LISTEN sometimes returned T even in cases where no data was
2443 immediately available from the stream
2444 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2445 were reversed. (reported by Levente Mészáros)
2446 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2447 when given a vector displaced to an adjustable array. (reported
2449 * bug fix: derivation of float boundaries from numbers outside the
2450 appropriate float range (reported by John Wiseman)
2451 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2453 * bug fix: precomputing cache entries for generic functions with
2454 some subclasses of specializers as yet invalid does not attempt to
2455 fill a cache line with a negative offset. (reported by Levente
2457 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2458 allow condition class objects as arguments to DOCUMENTATION and
2459 (SETF DOCUMENTATION); only find and set documentation for
2460 structure names for the STRUCTURE doc-type. (suggested by Gary
2462 * improvements to the Win32/x86 port:
2463 ** (user-homedir-pathname) and default initialization file
2464 locations now know about the user's "Documents and Settings"
2465 directory (thanks to Yaroslav Kavenchuk)
2466 ** run-program is implemented (thanks to Mike Thomas)
2467 ** sockets support (thanks to Timothy Ritchey)
2468 ** better backtrace support (thanks to Alastair Bridgewater)
2469 ** sb-grovel supported
2470 ** asdf-install and sb-posix work somewhat
2471 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2472 * improvements to the Solaris/x86 port:
2473 ** works on Solaris 11/Solaris Express
2474 ** floating-point exception handling support
2475 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2476 * fixed some bugs revealed by Paul Dietz' test suite:
2477 ** REMOVE-METHOD returns its generic function argument even when
2478 the method is not one of the generic functions' methods.
2479 ** objects declared as MEMBER types can be admissible arguments to
2480 structure accessors.
2481 ** printing characters should simply be printed by the FORMAT ~:C
2483 ** compiler failure when compiling functions with hairy constant
2484 defaults for optional parameters.
2485 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2486 function, which is already optimized.
2488 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2489 * new platform: experimental support for SBCL x86/Darwin, including
2490 MacOS X 10.4.5 on Intel.
2491 * new feature: Unicode character names are now known to the system
2492 (through CHAR-NAME and NAME-CHAR).
2493 * new feature: the filesystem location of SBCL's core file is
2494 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2495 * minor incompatible change: the contrib modules SB-POSIX and
2496 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2497 this change is to make it easier to distribute
2498 location-independent binaries.
2499 * bug fix: as implied by AMOP, standardized classes no longer have
2500 slots named by external symbols of public packages. (reported by
2502 * optimization: calling functions via constant symbols -- as in
2503 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2504 via the function object as in (FUNCALL #'FOO).
2505 * optimization: on x86 and x86-64, the calling convention for the
2506 case of dealing with an unknown number of values has been altered
2507 to be friendlier to the prediction heuristics implemented,
2508 particularly with reference to CALL and RET pairing. (thanks to
2509 Alastair Bridgewater)
2510 * optimization: on x86, the code for access to thread-local symbol
2511 values and binding/unbinding of thread-local symbols is smaller.
2512 (thanks to Alastair Bridgewater)
2513 * enhancement: CONSTANTP is now able to determine constantness of
2514 more complex forms, including calls to constant-foldable standardized
2515 functions and some special forms beyond QUOTE.
2516 * fixed bug: occasional GC crashes on Solaris/x86
2517 * optimization: x86-64 supports stack allocation of results of simple
2518 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2519 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2520 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2521 (thanks to James Knight)
2522 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2523 by the standard (thanks to Stephen Compall)
2525 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2526 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2527 be used for bundling the runtime and the core file into one
2528 executable binary. This feature is not currently supported on all SBCL
2529 platforms. (thanks to James Bielman and NIIMI Satoshi)
2530 * new feature: a generational or ephemeral garbage collector is now
2531 the default on the PowerPC platform (both Linux and Darwin). The
2532 old Cheney (stop and copy) collector is a build-time option.
2533 (thanks to Cyrus Harmon, after Raymond Toy)
2534 * minor incompatible change: the method by which SBCL finds its
2535 contributed modules has changed; it no longer relies on symbolic
2536 links from an $SBCL_HOME/systems directory, but searches directly
2537 in the subdirectories of $SBCL_HOME.
2538 * enhancement: the dynamic heap size on the Linux/PPC platform is
2539 markedly larger, even using the older Cheney garbage collector.
2540 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2541 certain complicated string types. (reported by Gary King)
2542 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2543 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2544 * fixed bug: DOCUMENTATION on structures no longer signals an
2545 error if no structure type of the right name exists. (reported by
2547 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2548 applicable non-standard primary or :AROUND method on
2549 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2550 no longer cause unbound variable errors. (reported by Kevin Reid)
2551 * fixed bug: metacircle resolution in cases where methods have slots
2552 added before the slots from STANDARD-METHOD. (reported by Jean
2554 * fixed bug: the Power PC assembly code for calling into lisp
2555 sometimes computed its return address wrongly (depending on the
2556 15th bit of the address, fixed at link time). This used to
2557 manifest itself in a segmentation violation while building PCL.
2558 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2559 many others over the years)
2560 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2561 the stack pointer (treated as a signed integer) is negative.
2562 (thanks to Peter van Eynde)
2564 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2565 * new platform: experimental support for the Windows operating
2566 system has been added. (thanks to Alastair Bridgewater)
2567 * fixed several bugs in and robustified the PPC FFI (including
2568 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2569 * bug fix: allow non-simple string symbol names (reported by Paul
2571 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2573 * bug fix: saving a core corrupted callbacks on x86/x86-64
2574 * bug fix: closed a loophole in metacircularity detection and
2575 grounding in the PCL implementation of CLOS.
2576 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2577 (reported by tomppa on #lisp)
2578 * bug fix: clear the direction flag on Lisp -> C transitions, as
2579 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2580 (reported by Andrej Grozin and Hendrik Maryns)
2581 * optimization: major improvements to GC efficiency on GENCGC platforms
2582 * optimization: faster implementation of EQUAL
2583 * optimization: emit more efficient opcodes for some common
2584 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2585 * optimization: several other minor code-generation improvements on x86-64
2586 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2588 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2589 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2590 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2591 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2592 by ANSI as a generic function, and for consistency (SETF
2593 GENERIC-FUNCTION-NAME) is treated likewise.
2594 * fixed bug #233.b: make constraint propagation notice when a variable
2595 value is changed after it is referenced but before it is used
2596 * fixed bug #296: no more arbitrary behaviour from filenames with
2597 odd characters as --load arguments. (reported by Adam Warner)
2598 * fixed bug #390: :CHARACTER-SET pathname components now work as
2599 expected. (reported by Tim Daly Jr)
2600 * fixed bug #391: complicated :TYPE intersections in slot
2601 definitions no longer cause an error in PCL internals.
2602 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2603 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2604 returning the number of octets which would be written to the
2605 file-stream. (thanks to Robert J. Macomber)
2606 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2607 arguments to the internal stream functions. (thanks to David
2609 * bug fix: stack exhaustion is now handled on the x86/SunOS
2610 platform. (thanks to Daisuke Homma)
2611 * bug fix: more accurate ROOM results on GENCGC platforms
2612 * optimization: improved type inference for arithmetic-for
2613 index variables in LOOP
2614 * optimization: faster floating-point SQRT on x86-64
2615 * fixed some bugs revealed by Paul Dietz' test suite:
2616 ** DOCUMENTATION returns NIL instead of "" for method combinations
2617 that don't have a docstring
2619 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2620 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2621 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2622 therefore are not customizeable by user code (as seems to be at
2623 least permitted and maybe required by AMOP). As a consolation,
2624 however, the SBCL implementation of these functions now calls
2625 REINITIALIZE-INSTANCE as specified by AMOP.
2626 * bug fix: slot-definition documentation is propagated as per ANSI
2627 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2628 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2629 argument, as do eslotd initialization methods. (from Pascal
2630 Costanza's "Closer" project)
2631 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2632 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2634 * bug fix: it is now possible to have more than one subclass of
2635 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2636 (reported by Bruno Haible, Pascal Costanza and others)
2637 * bug fix: the dependent update protocol now works for generic
2638 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2639 and Pascal Costanza)
2640 * bug fix: condition-class instances corresponding to
2641 DEFINE-CONDITION forms are now created eagerly. (reported by
2642 Kalle Olavi Niemitalo on comp.lang.lisp)
2643 * bug fix: floating point printing is more accurate in some
2644 circumstances. (thanks to Simon Alexander)
2645 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2646 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2647 * bug fix: callbacks on OS X now preserve stack-alignment.
2648 (thanks to Cyrus Harmon)
2649 * enhancement: the x86-64 disassembler is much better at
2650 disassembling SSE instructions. (thanks to Lutz Euler)
2651 * enhancement: CHECK-TYPE on a variable now allows type-inference
2652 (thanks to Vincent Arkesteijn)
2653 * optimization: improved performance of EUC-JP external format.
2654 (thanks to NIIMI Satoshi)
2655 * optimization: performance improvements to IO on file streams of
2656 :ELEMENT-TYPE CHARACTER
2657 * optimization: much faster memory allocation on x86-64
2658 * optimization: faster garbage collections (latency and throughput)
2660 * optimization: faster bignum subtraction and division on x86 and x86-64
2661 (thanks to Lutz Euler)
2662 * optimization: more accurate type-inference for loops that use a
2663 floating point index variable or a negative step.
2665 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2666 * bug fix: add a workaround to SBCL looping infinitely at startup on
2667 Linux kernels with apparently buggy implementations of personality().
2668 (thanks to Svein Ove Aas)
2669 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2670 (thanks to David Lichteblau)
2671 * bug fix: local bindings shadow global symbol macros for
2672 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2673 * optimization: non-open coded uses of numeric comparison operators
2674 (e.g. >) no longer cons when called with more than one parameter
2675 on platforms supporting dynamic-extent allocation.
2676 * enhancement: saving cores with foreign code loaded is now supported
2677 on MIPS/Linux in addition to the previously supported platforms.
2678 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2679 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2680 * bug fix: division by zero in sb-sprof when no samples were collected
2681 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2682 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2683 (thanks to Alexander Kjeldaas)
2684 * new feature: ignoring the return values of destructive functions
2685 like NREVERSE signals a compile-time style-warning.
2686 (thanks to Kevin Reid)
2687 * new feature: the alignment of alien structure fields can be
2688 explicitly specified. (thanks to Cyrus Harmon)
2689 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2690 and dump core on SIGQUIT
2692 ** incompatible change: threads do not inherit values of specials
2693 from their parents (see manual)
2694 ** bug fix: threads stacks belonging to dead threads are freed by the
2695 next exiting thread, no need to gc to collect thread stacks anymore
2696 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2697 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2698 ** bug fix: dynamic variable and thread start related gc lossage
2699 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2701 * fixed some bugs revealed by Paul Dietz' test suite:
2702 ** SUBTYPEP is slightly more accurate on heinously complicated
2703 CONS types where some of the members have uncertain (in the
2704 NIL, NIL sense) type relationships to each other.
2706 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2707 no longer purified unless :PURIFY T is explicitly specified.
2708 ** Non-purified cores are significantly smaller than before
2710 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2711 * new feature: timers based on Zach Beane's excellent timer package
2712 * added support for the following external formats: koi8-u,
2713 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2714 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2715 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2716 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2717 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2718 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2719 * incompatible change: a threaded SBCL will no longer revert to
2720 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2721 * bug fix: interrupts are disabled until startup is complete; no
2722 more sigsegvs when receiving a signal to soon
2723 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2725 * bug fix: add a workaround for the memory randomization features in
2726 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2727 workaround will only be in effect on systems with the proc filesystem
2729 * bug fix: printing objects of type HASH-TABLE signals a
2730 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2732 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2733 have been running for over 50 days. (reported by Gilbert Baumann)
2734 * bug fix: the logic for getting names of functions gets less
2735 confused when confronded with alternate-metaclass
2736 funcallable-instances. (reported by Cyrus Harmon)
2737 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2738 consistent, even on internal alternate-metaclass objects.
2739 * bug fix: flush closure information collected by physical
2740 environment analysis prepass before the main pass. (bug reported
2742 * bug fix: compiler pack phase does not modify a hashtable, which is
2743 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2744 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2745 may be expanded. (reported by Alexander <malishev> on c.l.l)
2746 * bug fix: no more style-warnings when compiling code using LAST
2747 under high-SPEED low-SPACE settings. (reported by David Wallin
2749 * fixed some incompatibilities between SBCL's MOP and the MOP
2751 ** the METAOBJECT class is now implemented;
2752 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2753 STANDARD-OBJECT, as required;
2754 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2755 now compatible (as required by VALIDATE-SUPERCLASS); there
2756 remains a consistency requirement over the presence or absence
2757 of the FUNCTION class in the superclass list of finalized
2758 classes; see the manual for more details;
2759 ** the :AROUND method for COMPUTE-SLOTS on
2760 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2761 requested slot ordering.
2763 ** bug fix: parent thread now can be gc'ed even with a live
2765 ** bug fix: binding a special with PROGV to no value is not
2766 the same as that symbol not having been bound (thanks to
2768 ** bug fix: binding specials is thread safe (thanks to
2770 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2771 and SB-SPROF do not die with 'no handler for signal XX in
2772 interrupt_handle_now(..)' anymore
2773 ** bug fix: WITH-TIMEOUT works with multiple running threads
2774 * fixed some bugs revealed by Paul Dietz' test suite:
2775 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2776 the :method-class keyword argument.
2778 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2779 * new port: the Solaris operating system on x86 processors is now
2780 mostly supported, though some rough edges in the environment
2781 remain. (thanks to Daisuke Homma)
2782 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2783 space for its heap. (thanks to Thiemo Seufer)
2784 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2785 closures. (thanks to Thiemo Seufer)
2786 * minor incompatible change: eof selects abort in the debugger.
2787 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2788 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2790 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2791 deprecated, and will go away in a future revision of SBCL.
2792 * minor incompatible change: GC-ON and GC-OFF are no longer
2793 implemented with a counter, it does not matter how many times gc
2794 is switched on or off
2795 * bug fix: discriminating functions for generic function classes
2796 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2797 make invalid assumptions about method precedence order. (reported
2799 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2800 platforms. (thanks to Thiemo Seufer)
2801 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2802 * bug fix: correct pathname printing with printer escaping is on.
2803 (thanks to Kevin Reid)
2804 * bug fix: complex VOP definitions in "user-space" no longer trigger
2805 package locks. (reported by Zach Beane)
2806 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2807 for funcallable-instance functions, and is no different from
2809 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2810 characters in the current readtable. (reported by Nicholas Neuss)
2811 * bug fix: SUBTYPEP on various CONS types returns more a more
2812 accurate acknowledgment of its certainty.
2813 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2814 lists in some cases. This partially fixes bug 384.
2815 * flush all standard streams before prompting in the REPL and the
2817 * bug fix: signal handling and triggering gc do not conflict
2818 directly anymore, in particular a high frequency sb-sprof does
2819 not prevent gc from running
2820 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2821 approximation for timezone and DST information between the
2822 universal time epoch and the smallest negative 32-bit time_t.
2823 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2824 year 1899 so long as the encoded time is non-negative.
2825 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2826 the correct answer for non-constant rotate amounts when performing
2827 an inline 32-bit rotation.
2829 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2830 there is only one thread in the session
2831 ** bug fix: memory leak for streams created in one thread and
2832 written to in another
2833 ** bug fix: lockup when compiled with gcc4
2834 ** bug fix: race that allows the gc to be triggered when gc is
2836 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2837 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2839 ** bug fix: finished threads are gc'ed properly
2840 * fixed some bugs revealed by Paul Dietz' test suite:
2841 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2842 has arguments with a different set of applicable methods from
2843 the orignal arguments.
2844 ** The type error thrown by MAP now has a correct expected-type
2846 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2847 name a compiled function.
2848 ** Three MISC tests where a large bignum was improperly coerced to
2849 a float that couldn't represent that bignum during type
2850 derivation were fixed.
2851 ** SUBTYPEP can now handle types involving the negation of a
2852 list-form FUNCTION type.
2853 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2854 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2855 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2857 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2858 * New feature: Experimental support for bivalent streams: streams
2859 opened with :element-type :default now allow character and binary
2860 (unsigned-byte 8) I/O
2861 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2862 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2864 * bug fix: no more highly sporadic "couldn't check whether ~S is
2865 readable" when reading a stream and an interrupt hits in the middle
2866 of a select system call
2867 * compiler better recognizes complex arrays (reported by Eduardo
2869 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2870 for variables on SBCL built with linkage-tables. (reported by Luis
2872 * various error reporting improvements.
2873 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2874 (Thanks to Thiemo Seufer)
2875 * bug fix: nested reader invokations work correctly
2876 * bug fix: it is possible to have simultaneous references to foreign
2877 code and foreign data with the same name.
2879 ** added x86-64 support
2880 ** incompatible change: the threading api now works with thread
2881 objects instead of thread ids
2882 ** bug fix: threads are protected from signals and interruption when
2883 starting up or going down
2884 ** bug fix: a race where an exiting thread could lose its stack to gc
2885 ** bug fix: don't halt on infinite error in threads if possible
2886 ** fixed numerous gc deadlocks introduced in the pthread merge
2887 ** bug fix: fixed thread safety issues in read and print
2888 ** bug fix: debugger doesn't hang on session lock if interrupted at
2889 an inappropriate moment
2890 ** bug fix: run-program is now thread safe(r)
2891 ** bug fix: inner with-recursive-lock no longer releases the mutex
2892 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2893 * fixed some bugs revealed by Paul Dietz' test suite:
2894 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2895 EXPECTED-TYPE slots filled.
2896 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2898 ** MAKE-CONDITION accepts classes as type-designators.
2899 ** COMPILE may never return NIL.
2900 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2901 range before calling Unix time functions
2903 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2904 * numerous signal handling fixes to increase stability
2905 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2906 * minor incompatible change: we now correctly canonize default
2907 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2908 as per the MOP, rather than the historical (INITARG INITFUNCTION
2909 INITFORM). (reported by Bruno Haible)
2910 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2911 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2912 for more information.
2913 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2914 pathname is a directory pathname.
2915 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2916 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2918 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2919 :METACLASS argument in addition to a class name. (reported by
2920 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2921 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2922 (reported by Bruno Haible; patch from Gerd Moellmann)
2923 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2925 * bug fix: more cleanups to the floating point exception handling on
2926 x86-64 (thanks to James Knight)
2927 * bug fix: the compiler does not try to constant fold calls of
2928 COERCE and BIT-* functions when they return freshly constructed
2929 objects. (reported by Nikodemus Siivola and Paul Dietz)
2930 * optimization: improved the MIPS versions of generic (in the
2931 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2932 * optimization: direct conversion of (unsigned-byte 32) to floats on
2933 the PowerPC platform.
2934 * optimization: structure instances with raw slots now use less
2935 memory, and probably show better memory locality. (thanks to
2937 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2938 are treated as requests for stack allocation on the x86-64,
2939 Alpha-32, PPC and SPARC platforms.
2940 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2941 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2942 (thanks to Tony Martinez)
2944 ** gcing a dead thread can no longer lead to lockups
2945 ** threads block signals until they are set up properly
2946 ** errno is no longer shared by threads
2947 ** interrupt-thread restores the eflags register on x86
2948 ** fixed some lockups due to gc/thread interaction
2949 * fixed some bugs revealed by Paul Dietz' test suite:
2950 ** invalid dotted lists no longer raise a read error when
2951 *READ-SUPPRESS* is T
2952 ** signal an error if a symbol that names a declaration is used
2953 as the name of a type, or vice versa
2954 ** allow using the (declare (typespec var*)) abbreviation for
2955 (declare (type typespec var*)) with all type specifiers
2956 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2957 ** always return NIL from PPRINT-POP when OBJECT is NIL
2958 ** don't signal errors when pretty-printing malformed LABELS,
2959 FLET or MACROLET forms
2960 ** declarations in a DOLIST body are also in scope for the
2962 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2964 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2967 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2968 * fixed cross-compiler leakages that prevented building a 32-bit
2969 target with a 64-bit host compiler.
2970 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2971 opened with :IF-EXISTS :OVERWRITE.
2972 * fixed bug 281: error for an invalid qualifier in a short-form method
2973 combination method is not signalled until the faulty method is called.
2974 * bug fix: iteration variable type inferrer failed to deal with open
2975 intervals. (reported by Alan Shields)
2976 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2977 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2978 or more runtime options were provided to the sbcl binary.
2979 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2980 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2981 * optimization: there's now a fast-path for fixnum arguments in the
2982 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2983 * optimization: the code generated on x86-64 is more compact thanks
2984 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2985 * bug fix: floating-point exception handling now partly works on
2986 x86-64. (Thanks to James Knight)
2987 * improvement to the MIPS backend from Thiemo Seufer: C-style
2988 64-bit long long arguments and return values to alien functions
2990 * fixed some bugs revealed by Paul Dietz' test suite:
2991 ** the type-error signalled from WARN has a filled-in DATUM slot.
2992 ** the type-error required when a stream is not associated with
2993 a file has the stream as its datum.
2994 ** type-errors on single-floats on x86-64 no longer have
2995 :INVALID-OBJECT as the datum
2996 ** the type-errors signalled for invalid function names now have
2997 a correct expected type
2998 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2999 for structures defined with a :TYPE. Documentation strings for
3000 typed structures are no longer immediately discarded
3001 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3002 broadcast streams and synonym streams. FILE-LENGTH now also works
3003 on broadcast streams.
3005 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3006 * incompatible change: the --noprogrammer option, deprecated since
3007 version 0.7.5, has been removed. Please use the equivalent
3008 --disable-debugger option instead.
3009 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3011 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3012 inoperational for a while now) has been completely removed.
3013 * null lexical environments are now printed as #<NULL-LEXENV>,
3014 significantly reducing the amount of clutter in typical backtraces.
3015 * documentation on weak pointers, finalization, and after GC hooks
3016 has been added to the manual.
3017 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3018 as other specialized array types, is much faster. SUBSEQ and
3019 COPY-SEQ on such arrays have also been sped up.
3020 * optimization: EQL is now more efficient when at least other argument
3021 is known to be of type (OR FIXNUM (NOT NUMBER)).
3022 * fixed bug: the runtime is now less vulnerable to changes in the
3023 size of the SBCL object on OS X, and virtual memory is reserved for
3024 all spaces that need to be at a fixed address.
3025 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3026 * fixed bug: finalizers and after GC hooks that cause consing are now
3028 * fixed bug: compiler error messages and summaries are now printed to
3029 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3030 * fixed inference of the upper bound of an iteration variable.
3031 (reported by Rajat Datta).
3032 * fixed bug 211e: calling local functions with duplicated constant
3033 keyword argument no longer causes a bogus style warning about an
3035 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3036 ftype declaration to be disregarded. (reported by Dave Roberts)
3037 * fixed bug 373: caused by erronous compilation of references to alien
3038 variables in the runtime on ppc/darwin.
3039 * fixed bug 376: CONJUGATE type deriver.
3040 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3041 (reported by Baughn on #lisp)
3042 * a cross-compiler bug on non-x86 platforms has been identified and
3043 fixed. (thanks to Bruno Haible)
3044 * improvements to the MIPS runtime code for increased stability.
3045 (thanks to Thiemo Seufer)
3046 * increased the maximimum compact environment size to allow
3047 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3048 * partial workaround for bug 135: don't name the function we're
3049 calling for hairy cases of EVAL, so as not to accumulate one environment
3050 entry per call to EVAL. (reported by Kevin Reid)
3051 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3052 * optimization: type testing for non-vector arrays should be faster.
3053 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3055 * bug fix: setting 31st element of a bit vector to zero did not work
3057 * bug fix: redefining a class definition which failed due to a
3058 previous accessor / function clash now works (but see BUGS entry
3059 #380 for more problems in this area). (thanks to Zach Beane)
3060 * the long form of DEFINE-METHOD-COMBINATION disables method group
3061 checking when given a single method group with pattern *. (thanks
3063 * on x86 compiler supports stack allocation of results of simple
3064 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3065 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3066 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3067 * fixed some bugs related to Unicode integration:
3068 ** the restarts for recovering from input and output encoding
3069 errors only appear when there is in fact such an error to
3071 * fixed some bugs revealed by Paul Dietz' test suite:
3072 ** MISC.549 and similar: late transformation of unsafe type
3073 assertions into derived types caused unexpected code
3075 ** SCALE-FLOAT type deriver is less wrong.
3076 ** type derivers for EXP, LOG and similar functions compute result
3077 types for complex arguments better.
3078 ** (MISC.563) CONJUGATE type deriver works for very restricted
3080 ** out-of-line type testers for character strings are available.
3081 ** EQUAL compiler transform understands specialness of objects
3083 ** accessing double-floats stored on the stack now works on x86-64.
3084 ** debugger internals could sometimes create invalid lispobjs,
3085 resulting in GC crashes.
3086 ** MISC.548: type check weakening can convert required type into
3088 ** initialization forms for bindings are not in scope of free special
3091 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3092 * incompatible change: thread support for non-NPTL systems has
3093 been removed - locking is buggy and unreliable. A threaded
3094 SBCL build will now warn at startup and refuse to create
3095 new threads, unless futex support is detected in the kernel
3096 * incompatible change: the top level REPL now has only an ABORT
3097 restart associated with it, not TOPLEVEL and ABORT as it used to.
3098 TOP and TOPLEVEL are now available as debugger commands for
3099 returning to the top level.
3100 * incompatible change: forms evaluated in the REPL now use the
3101 global optimization policy.
3102 * incompatible change: user- and system-initialization files are
3103 no longer processed with LOAD, but by READ and EVAL; hence the
3104 global optimization policy, startup package, readtable, etc,
3106 * The .fasl file format number has been incremented because of
3107 various incompatible changes.
3108 * internal entry point details and argument counts no longer appear
3109 in backtraces unless explicitly requested by setting
3110 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3111 * built-in and standard functions no longer have names like "top
3112 level local call to FOO".
3113 * fixed bug 32: functions defined in non-null lexical environments
3114 now have more legible printed representation
3115 * fixed bug 33: functions defined in non-null lexical environemnts
3116 are now more amenable to inspection by INSPECT.
3117 * workaround for bug 354: XEPs no longer appear in backtraces unless
3118 explicitly requested.
3119 * fixed bug: receiving the signal which results from attempting to
3120 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3121 SIGBUS on other *BSDs) on architectures where the C stack is also
3122 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3123 to debugger confusion or wild instability. (reported by Cheuksan
3125 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3126 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3127 (reported by Lutz Euler)
3128 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3129 compiled code. (reported by Paul Dietz)
3130 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3131 specialized parameter to a method to something that is not TYPEP
3132 the specializer is now possible.
3133 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3134 face of package deletion.
3135 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3136 pathname. (reported by David Tolpin on c.l.l)
3137 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3138 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3139 STRING-STREAM and FILE-STREAM, respectively.
3140 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3141 than previously; in addition, its test suite is now run on build.
3142 (thanks to Luke Gorrie)
3143 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3144 * optimization: added a immediate representation for single-floats
3146 * fixed some bugs revealed by Paul Dietz' test suite:
3147 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3148 ** attempting to create a package with a colliding nickname causes
3149 correctable errors to be signalled.
3150 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3151 ** several x86-64 backend bugs related to sign-extension of immediate
3154 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3155 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3156 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3158 * fixed loading of multiply forward-referenced layouts.
3159 (thanks to Cheuksan Wang)
3160 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3161 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3162 (see COMPILE-FILE documentation for details of :PRINT option)
3163 * fixed bugs 19 and 317: fixed-format floating point printing is
3164 more accurate. This also fixes a bug reported by Adam Warner
3165 related to the ~@F format directive.
3166 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3168 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3169 dispatch table if the from-char is a dispatch macro character.
3170 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3171 by the wordsize no longer ignore the last word. (reported by Lutz
3173 * fixed bug in type checking of dynamic-extent variables. (reported
3175 * optimization: sequence traversal functions use their freedom to
3176 coerce function designators to functions.
3177 * optimization: code with many calls to CLOS methods specialized on
3178 CLOS classes has had redundant type checks removed.
3179 * optimization: added declarations to speed up operations that access
3180 the internal character database (for example STRING-UPCASE)
3181 * optimization: comparison operations between floats and sufficiently small
3182 fixnums no longer create extra rationals
3183 * fixed some bugs related to Unicode integration:
3184 ** portions of multibyte characters at the end of buffers for
3185 character-based file input are correctly transferred to the
3186 start of the buffer at the next read.
3187 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3188 passing it through to OPEN.
3189 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3190 argument given to internal calls to OPEN.
3191 ** the built-in comment readers (introduced by character sequences
3192 ";" and "#|") are more forgiving to encoding errors; they will
3193 STYLE-WARN and then attempt to resync the stream at a character
3194 boundary. (thanks to Teemu Kalvas)
3195 * fixed some bugs in the x86-64 port:
3196 ** Negative short int return values from c-calls are sign-extended
3198 ** The stack is aligned to 16-bytes for c-calls, as required by
3199 the ABI. (thanks to Cheuksan Wang)
3200 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3201 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3202 for enums. (thanks to Vincent Arkesteijn)
3203 ** Multiple small optimizations and bugfixes for floating point
3205 * fixed some bugs revealed by Paul Dietz' test suite:
3206 ** Space, Tab, Linefeed, Return and Page have the invalid
3207 secondary constituent character trait.
3208 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3210 ** WITH-INPUT-FROM-STRING should only update the index place on
3212 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3213 works more reliably.
3214 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3215 with one-dimensional arrays with fill pointers.
3216 ** TYPE-OF failed on a complex with an integer realpart and a
3218 ** compiler failure during type inference for the code of form
3219 (IF (EQL X (THE ...)) ...) (MISC.535).
3221 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3222 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3223 platform. The port supports 61-bit fixnums, large memory spaces
3224 and reloading shared object files.
3225 * enhancement: saving cores with foreign code loaded is now
3226 supported on ppc/Darwin in addition to the previously supported
3228 * enhancement: the statistical profiler now walks deeper into the
3229 call stack for more meaningful call-graphs and accrued time
3230 reports (x86/x86-64 only). It also now reports time spent in
3232 * enhancement: it is now possible to trace most individual methods
3233 of a generic function in addition to tracing the generic function
3235 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3237 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3238 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3239 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3240 produces an error. (thanks to Vincent Arkesteijn)
3241 * bug fix: NAMESTRING on pathnames with :WILD components in their
3242 directories works correctly. (thanks to Artem V. Andreev)
3243 * fixed bug 125: compiler preserves identity of closures. (reported
3245 * bug fixed: functions with &REST arguments sometimes failed with
3246 "Undefined function" when compiled with (DEBUG 3). (reported by
3248 * bug fix: overflow during compiling of setting element of a bit
3249 vector with constant index and value. (reported by Timmy Douglas)
3250 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3251 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3252 * on x86 compiler partially supports stack allocation of dynamic-extent
3254 * GO and RETURN-FROM do not check the extent of their exit points
3255 when compiled with SAFETY 0.
3256 * fixed some bugs related to Unicode integration:
3257 ** encoding and decoding errors are now much more robustly
3258 handled; it should now be possible to recover even from invalid
3259 input or output to the terminal. (thanks to Teemu Kalvas)
3260 ** provided a first cut at implementing STRING-TO-OCTETS and
3261 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3262 ** altered the SB-MD5 contributed module slightly, changing the
3263 interface just enough for it to be supportable for builds where
3264 lisp characters are not eight bits.
3265 * fixed some bugs revealed by Paul Dietz' test suite:
3266 ** the FORMATTER-generated functions for ~V[ conditionals require
3267 the correct number of arguments.
3268 ** READ-FROM-STRING returns the mandated second value when applied
3269 to displaced strings.
3270 ** the #\Rubout and #\Backspace characters are treated as invalid
3271 constituent characters by the tokenizer.
3273 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3274 * new feature: reloading changed shared object files with
3275 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3276 * new feature: references to foreign variables and functions
3277 can now be compiled and loaded before the corresponding shared
3278 object file is loaded, as long as the foreign definitions are
3279 available at runtime.
3280 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3281 supported. (thanks to Dan Debertin)
3282 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3283 just keywords. (thanks to Vincent Arkesteijn)
3284 * fixed bug #331: structure-class instances corresponding to
3285 DEFSTRUCT forms are now created eagerly.
3286 * fixed bug #345: backtraces from calls to undefined functions work
3287 on x86 as well. Related bug #61 is now also partially fixed on x86
3288 (backtraces from throws to unknown catch tags.)
3289 * bug fix: lambda-list parsing is now stricter vrt. order and number
3290 of lambda-list keywords.
3291 * bug fix: as specified by AMOP, an error is signalled if a
3292 class-option appears multiple times in a DEFCLASS form. (reported
3294 * bug fix: RANDOM can be compiled when the compiler derives the type
3295 of its numeric argument as a disjoint set of small integers.
3296 (reported by Paul Dietz)
3297 * bug fix: starting a core saved with shared objects loaded when
3298 those objects are not available no longer causes threaded SBCL to
3299 hang. (reported by Sean Ross)
3300 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3302 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3303 argument, which must always be NIL. (reported by Kalle Niemitalo)
3304 * bug fix: printing 1.0d+23 no longer results in an error.
3305 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3306 * bug fix: structure slot setters preserve evaluation order. (thanks
3308 * fixed some bugs related to Unicode integration:
3309 ** RUN-PROGRAM can allow its child to take input from a Lisp
3310 stream. (reported by Stefan Scholl)
3311 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3312 locales. (reported by Ken Causey)
3313 * fixed some bugs revealed by Paul Dietz' test suite:
3314 ** INCF, DECF and REMF evaluate their place form as specified in
3316 ** FORMATTER expands ~{ ~} iteration directives with V or #
3317 parameters correctly.
3318 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3319 consequent uses no arguments correctly.
3320 ** the system has a partial understanding of the (COMPLEX RATIO)
3322 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3325 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3326 * new feature: a build-time option (controlled by the :SB-UNICODE
3327 keyword feature, enabled by default) for building the system with
3328 support for the entire 21-bit character space defined by the
3330 * new feature: the system now has rudimentary external-format
3331 support; the primary user-visible change at this time is that
3332 characters with the high bit set (such as lower-case-e-acute) will
3333 print correctly to a terminal in a UTF-8 environment.
3334 * minor incompatible change: BASE-CHAR no longer names a class;
3335 however, CHARACTER continues to do so, as required by ANSI.
3336 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3337 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3338 has been moved to the SB-EXT package (temporarily re-exported from
3340 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3341 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3343 * fixed bug #351: better error-handlind and reporting for malformed
3345 * fixed bug #350: bignum-printing is now more memory-efficient,
3346 allowing printing of very large bignums, eg. (expt 2 10000000).
3347 (reported by Bruno Haible)
3348 * fixed bug #302: better primitive-type selection for intersection
3350 * fixed bug #308: non-graphic characters now all have names, as
3351 required. (reported by Bruno Haible)
3352 * bug fix: redefining a class with different superclasses now correctly
3353 removes it from the direct-subclasses of its previous superclasses.
3354 (reported by David Morse)
3355 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3356 new value now works. (reported by Bruno Haible)
3357 * bug fix: correct canonicalization of multiple non-standard slot
3358 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3359 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3360 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3361 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3362 now exists, an signals an error.
3363 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3364 during macroexpansion for non-iteration variables as well. (reported
3365 by Bruno Haible for CMUCL)
3366 * bug fix: Cyclic structures and unprintable objects in compiler
3367 messages no longer cause errors. (reported by Bruno Haible)
3368 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3369 and READ-FROM-STRING all now return a primary value of NIL if
3370 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3371 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3372 (reported by Bruno Haible for CMUCL)
3373 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3374 do not designate a condition. (reported by Bruno Haible for
3376 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3377 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3378 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3379 permitting resolution in favour of any of the conflicting symbols.
3380 (reported by Bruno Haible for CMUCL)
3381 * bug fix: EQUAL compiler optimizations is less aggressive on
3382 strings which can potentially compare true despite having distinct
3383 specialized array element types.
3384 * bug fix: unit enumerations can be defined without dividing by
3385 zero. (thanks to Vincent Arkesteijn)
3386 * FORMAT compile-time argument count checking has been enhanced.
3387 (report from Bruno Haible for CMUCL)
3388 * a partial workaround for the bug 262: the compiler does not try to
3389 inline-expand a local function doing RETURN-FROM from a deleted
3390 BLOCK. (thanks to Peter Denno for the bug report and to David
3391 Wragg for the simple test case)
3392 * fixed some bugs revealed by Paul Dietz' test suite:
3393 ** RENAME-PACKAGE allows all package designators as new package
3395 ** constraint propagation and lambda variable substitution are
3396 more cautious in dealing with partially deleted code.
3397 ** compiler sometimes lost reoptimization passes.
3398 ** CERROR, given a condition as condition designator, passes its
3399 remaining arguments to the continue format control without
3401 ** Case-altering FORMAT directives work correctly on non-ASCII
3403 ** The REAL type specifier handles bounds outside the floating
3404 point ranges without signalling FLOATING-POINT-OVERFLOW.
3405 ** Functions with IR1-transformations can create intercomponent
3406 references to global functions.
3407 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3409 ** FORMAT ~R treats a nil value for its first parameter correctly.
3411 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3412 * enhancement: saving cores with foreign code loaded is now
3413 supported on x86/NetBSD and sparc/Linux in addition to the previously
3414 supported platforms.
3415 * bug fix: on some platforms repeated installations caused multiple
3416 copies of HTML documentation to be installed -- should not happen
3417 any more. (reported by Stefan Scholl)
3418 * bug fix: parsing self-recursive alien record types multiple times
3419 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3420 original patch by Helmut Eller for CMUCL)
3421 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3422 (thanks to Richard Kreuter)
3423 * bug fix: defining classes whose accessors are methods on existing
3424 generic functions in other (locked) packages no longer signals
3425 bogus package lock violations. (reported by François-René Rideau)
3426 * bug fix: special variables as DEFMETHOD parameters no longer have
3427 associated bogus type declarations. (reported by David Wragg and
3429 * bug fix: read-write consistency on streams of element-type
3430 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3431 * bug fix: redefiniton of the only method of a generic function with
3432 no DEFGENERIC no longer emits a full WARNING. In addition,
3433 redefinition of generic functions with no DEFGENERIC to an
3434 incompatible lambda list now signals an error. (thanks to Zach
3436 * bug fix: DEFGENERIC now works even when there's a function of the
3437 same name in an enclosing lexical environment. (thanks to Zach
3439 * fixed compiler failure, caused by instrumenting code during
3440 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3441 * optimization: added loop analysis and improved register allocation
3442 * fixed some bugs revealed by Paul Dietz' test suite:
3443 ** POSITION on displaced vectors with non-zero displacement
3444 returns the right answer.
3445 ** (SIMPLE-STRING) is a valid type specifier for sequence
3447 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3449 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3450 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3452 ** The justification version of the FORMAT ~< directive treats
3453 non-zero minpad parameter correctly.
3455 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3456 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3457 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3458 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3459 the supported interface.
3460 * new feature: Single-stepping of code compiled with DEBUG 2 or
3461 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3462 * new feature: saving cores with foreign code loaded is now
3463 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3464 Timothy Moore's work for CMUCL)
3465 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3466 parameters to * instead of NIL if no initform is supplied.
3467 (reported by Johan Bockgaard)
3468 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3469 correctly when FUNCALL appears as the car of the form. Note:
3470 despite this FUNCALL forms are not currently subject to
3471 compiler-macro expansion. (port of Raymond Toy's fix for the
3472 same from CMUCL, reported by Johan Bockgaard)
3473 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3474 (thanks for Teemu Kalvas)
3475 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3476 case instead of terminating the iteration (thanks for Julian
3477 Squires, Sean Champ and Raymond Toy)
3478 * bug fix: incorrect expansion of defgeneric that caused a style
3479 warning. (thanks for Zach Beane)
3480 * bug fix: slot accessor effective method computation works properly
3481 for classes with multiple non-standard applicable methods on
3482 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3483 * on x86 compiler supports stack allocation of results of LIST and
3484 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3485 CMUCL implementation by Gerd Moellmann)
3486 * fixed some bugs revealed by Paul Dietz' test suite:
3487 ** FORMAT strings with both the ~<~:;~> form of the justification
3488 directive and pretty-printing directives cause an error.
3490 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3491 * incompatible change: the internal functions
3492 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3493 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3494 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3495 instead of the old functions.
3496 * new feature: on platforms where "dladdr" is available foreign
3497 function names now appear in backtraces. (based on Helmut Eller's
3499 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3500 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3502 * documentation: ASDF manual is now distributed with SBCL.
3503 * bug fix: SBCL can now load its contributed modules with REQUIRE
3504 even if the system-provided entries have been removed from
3505 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3507 * bug fix: backtraces involving undefined functions or assembly
3508 routines are more informative. (thanks to Brian Downing)
3509 * bug fix: mutually referent alien structures now work correctly.
3510 (reported by Rick Taube)
3511 * bug fix: structures defined by WITH-ALIEN can be referred to
3512 within other definitions in the same WITH-ALIEN.
3513 * bug fix: division operators (MOD, TRUNCATE and the like) with
3514 constant zero divisors and integer dividends no longer generate
3516 * bug fix: provide default methods for INPUT-STREAM-P and
3517 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3518 * bug fix: improve the detection and resolution of MOP metacycles
3519 (where effective method computation depends on the generic function
3520 having its effective method computed). (reported by Bruno Haible)
3521 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3522 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3523 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3524 * bug fix: pathnames with relative directory components can be
3525 represented relative to default pathnames.
3526 * optimization: in taking the GCD of bignums, reduce the two bignums
3527 to approximately the same size (using Euclid's algorithm) before
3528 applying the more sophisticated binary GCD. (thanks to Juho
3530 * optimization: COUNT on bitvectors now operates word-at-a-time.
3531 * optimization: ASH with a positive, but not necessarily constant,
3532 (leftwards) shift, when in a modular context, is compiled to a
3534 * fixed some bugs revealed by Paul Dietz' test suite:
3535 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3536 if the corresponding argument is NIL.
3537 ** FORMAT directives accepting a minpad parameter treat negative
3539 ** literal commas as character parameters to FORMAT directives are
3541 ** literal spaces directly after ~<Newline> directives within a
3542 format-logical-block (~:< ~@:>) do not induce :FILL-style
3543 conditional newlines.
3544 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3545 as specified: it no longer includes conditional newlines).
3546 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3548 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3549 :PER-LINE-PREFIX argument does not evaluate to a string.
3551 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3552 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3553 the manual for details; for now, package locks can be disabled by
3554 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3555 if no major problems are found then it is likely that they will be
3556 compiled in unconditionally.
3557 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3558 unsupported operators on all platforms. To load a shared library
3559 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3560 object file, link it into a shared library outside of SBCL and
3561 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3563 * bug workaround: ROOM T and the GC were not working together
3564 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3565 reporting facility aren't preserved. That reporting has been
3566 disabled, so now until and unless someone figures out how to make it
3567 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3568 * minor incompatible change: as threatened around sbcl-0.8.0, the
3569 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3570 The symbols are also exported from SB-PCL for backwards
3571 compatibility, but more so than before SB-PCL should be treated as
3572 an implementation-internal package.
3573 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3575 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3576 It is known as of this release not to work on the Alpha, however.
3577 * fixed bug #167: errors signalled due to illegal syntax in method
3578 bodies are now more legible.
3579 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3580 designators and can hence be used with TYPEP.
3581 * fixed bug #333: CHECK-TYPE now ensures that the type error
3582 signalled, if any, has the right object to be accessed by
3583 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3584 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3585 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3587 * fixed bug #334: programmatic addition of slots using specialized
3588 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3589 and :ALLOCATION :CLASS slots.
3590 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3591 float exponents. (rereported by Peter Seibel)
3592 * fixed a bug: #\Space (and other whitespace characters) are no
3593 longer considered to be macro characters in standard syntax by
3594 GET-MACRO-CHARACTER.
3595 * fixed bug: initialization of condition class metaobjects no longer
3596 causes an instance of the condition to be created. (reported by
3598 * fixed bug: it is now possible to have slots such that
3599 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3600 description is neither :INSTANCE nor :CLASS.
3601 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3602 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3603 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3604 non-standard SLOT-DEFINITION-ALLOCATION values.
3605 * fixed bugs: various race conditions handling exiting threads.
3606 CL-PPCRE's thread torture test now passes.
3607 * fixed arguably-a-bug: GC time proportional to number of threads in
3608 system even when most of them are idle
3609 * optimization: improved performance of BIT and SBIT on bit-vectors.
3610 * .fasl file incompatibility: The fasl file version number has
3611 been incremented because of changes associated with package locks.
3613 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3614 * minor incompatible change: the system no longer provides
3615 optimization hints (conditions which are TYPEP
3616 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3617 mode; these hints are still emitted when higher SPEED optimization
3619 * new contrib module: a sampling profiler (profiling by statistical
3620 sampling, rather than by instrumenting functions) is available as
3621 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3622 * the behaviour of the standard function ED is now customizeable by
3623 third parties through a hook variable: see ED's documentation
3624 string for information on the protocol.
3625 * the compiler no longer emits efficiency notes for (FUNCALL X)
3626 when the type of X is uncertain under default optimization
3628 * fixed bug 276: mutating a binding of a specialized parameter to a
3629 method to something that is not TYPEP the specializer is now
3631 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3632 exhibit the required behaviour on the x86 platform. (thanks to
3633 Peter van Eynde, Eric Marsden and Bruno Haible)
3634 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3635 even for difficult arguments. (reported by Peter Graves)
3636 * fixed bug 141a: the backquote printer now descends quoted
3638 * fixed another bug in backquote printing: no more destructive
3639 modification of the form's list structure. (reported by Brian
3641 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3642 move between its address being taken and the call to
3643 interrupt_thread, fixing a crashing race condition.
3644 * the SB-POSIX contrib implementation has been adjusted so that it
3645 no longer exhibits ridiculously poor performance when constructing
3646 instances corresponding to C structs.
3648 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3649 * minor incompatible change: the sb-grovel contrib now treats C
3650 structures as alien (in the sense of SB-ALIEN) objects rather than
3651 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3652 has implications for memory management of client code
3653 (sb-grovel-returned objects must now be manually managed) and for
3654 type safety (alien objects now have full types).
3655 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3656 used to control emission of compiler diagnostics, rather than the
3657 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3658 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3659 quality should be considered deprecated.
3660 * install.sh now installs the user manual as well
3661 * (not quite a new documentable feature, but worth considering in
3662 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3663 beginnings of a semantically meaningful condition hierarchy is
3664 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3666 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3667 designator as the defaults argument.
3668 * fixed bug: Displaced arrays whose displaced-to array has become
3669 too small now cause ARRAY-DIMENSION to signal an error, providing
3670 for safer bounds-checking. (reported by Bruno Haible)
3671 * fixed bug: DEFCLASS slot definitions with identical :READER and
3672 :WRITER names now signal a reasonable error. (reported by Thomas
3674 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3676 * fixed bug: Invalid slot specification errors now print correctly.
3677 (thanks to Zach Beane)
3678 * fixed bug 320: Shared to local slot value transfers in class
3679 redefinitions now happen corrently from superclasses as
3680 well. (reported by Bruno Haible)
3681 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3683 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3684 improper lists correctly. (reported by Bruno Haible)
3685 * fixed bug 313: source-transform for <fun-name> was erroneously
3686 applied to a call of a value of a variable with name <fun-name>.
3687 (reported by Antonio Menezes Leitao)
3688 * fixed bug 307: The obsolete instance protocol ensures that
3689 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3690 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3691 remove dead unknown-values globs from the middle of the stack.
3692 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3693 easier to resume long computations after using *BREAK-ON-SIGNALS*
3694 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3695 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3696 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3697 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3698 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3699 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3701 * fixed a (fairly theoretical) bug in string printing: if
3702 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3703 does not have array-element-type equal to the most general string
3705 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3706 function name. (thanks to Nikodemus Siivola)
3707 * fixed bug: compile-time format string checker failed on
3708 non-closed ~{. (reported by Thomas F Burdick)
3709 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3710 don't warn on legal loop code involving more than one aggregate
3711 boolean. (thanks to Nikodemus Siivola)
3712 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3713 in keyword position to MAKE-PACKAGE was not being reported as
3715 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3716 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3718 * fixed bugs 280 and 312: the checking for multiple definitions in a
3719 file is less likely to become confused by uses of inline
3721 * fixed bug: the #S reader macro performs the keyword coercion
3722 specified for slot names. (reported by Kalle Niemitalo)
3723 * fixed bug: lambda lists may contain symbols whose names start with
3724 & but are not lambda-list-keywords; their occurrence triggers a
3726 * fixed bug 321: define-method-combination argument lambda lists do
3727 not cause invalid code to be generated when &optional or &aux
3728 variables have default values. (reported by Bruno Haible)
3729 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3730 have CLOS classes; this appears also to have fixed reported
3731 instability in stack exhaustion detection.
3732 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3733 MUFFLE-WARNING when no associated restart is present is now
3735 * optimization: rearranged the expansion of various defining macros
3736 so that each expands into only one top-level form in a
3737 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3739 * optimization: used a previously little-used slot in symbols to
3740 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3742 * fixed some bugs revealed by Paul Dietz' test suite:
3743 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3745 ** Fixed an optimization bug related to inheritance of initforms
3746 from local to shared slots.
3747 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3748 ** CAST optimizer forgot to flush argument derived type.
3749 ** print/read consistency on floats is now orders of magnitude
3750 more likely. (thanks also to Bruno Haible for a similar report
3752 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3753 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3754 for objects of type REAL. Make it so.
3755 ** SXHASH is specified (infelicitously) to respect similarity,
3756 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3757 it so. (thanks to Markus Ziegler)
3758 ** on the Alpha, the compiler succeeds in compiling functions
3759 returning a known number of arguments greater than 63.
3760 ** fixed handling of invalid NIL arguments in keyword position
3762 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3764 ** provided a readably-printable representation for RANDOM-STATE
3766 ** ensured that pathnames, where they have a namestring, always
3767 print using #P"..." syntax.
3769 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3770 * Support for the forthcoming 2.0 version of the NetBSD kernel
3771 running on x86 hardware has been added. (thanks to Perry
3772 E. Metzger most immediately, and others for their past work)
3773 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3774 current release version; SBCL's OpenBSD support had been broken
3775 since about the time of OpenBSD's switch to ELF binary format.)
3776 * [placeholder for DX summary]
3777 ** user code with &REST lists declared dynamic-extent, under high
3778 speed or space and low safety and debug optimization policy.
3779 * The manual has been converted to Texinfo format and the debugger
3780 chapter from the cmucl manual has been added.
3781 * A facility has been added to extract documentation strings from
3782 sbcl and store them as Texinfo-formatted snippets for inclusion in
3783 the manual (via Texinfo's @include directive)
3784 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3785 the test case to Dave Roberts)
3786 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3787 pointers. (reported by Sean Ross)
3788 * bug fix: PROFILE output is printed nicely even for large numerical
3789 values. (thanks to Zach Beane)
3790 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3791 greater than 32 handle EOF correctly.
3792 * bug fix: on X86 an immediate argument of the IMUL instruction is
3793 correctly printed in disassembly. (thanks to Lutz Euler)
3794 * bug fix: class slots in redefined classes preserve their old
3795 values. (thanks to Bruno Haible and Nikodemus Siivola)
3796 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3797 succeeds. (reported by Marco Baringer)
3798 * fixed some bugs revealed by Paul Dietz' test suite:
3799 ** READ-SEQUENCE now works on ECHO-STREAMs.
3800 ** RATIONALIZE works more according to its specification. (thanks
3803 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3804 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3805 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3806 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3807 should matter to you only if you rebind the printer control
3808 variables and then find you want different bindings in the
3809 debugger than in the ordinary execution of your program.)
3810 * The runtime build system has been tweaked to support building
3811 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3812 assembler and linker. (thanks to Nikodemus Siivola)
3813 * Unbound, undefined, undeclared variables now trigger full
3814 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3815 more often programmer error than deliberate exploitation of undefined
3817 * optimization: the hash algorithm for strings has changed to one
3818 that is less vulnerable to spurious collisions. (thanks to Juho
3820 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3821 needless bounds checking. (thanks to Juho Snellman)
3822 * optimization: implemented multiplication as a modular
3823 (UNSIGNED-BYTE 32) operation on the PPC backend.
3824 * fixed some bugs revealed by Paul Dietz' test suite:
3825 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3827 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3828 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3829 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3831 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3833 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3835 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3836 their output stream on EOF from read.
3837 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3838 have been read to end-of-file.
3839 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3841 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3842 description of determination of which consecutive characters
3844 ** Printing the "Space" character with escaping on now yields "#\\ ",
3845 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3846 ** Reading floating-point numbers with *READ-BASE* set to a number
3847 less than 10 works correctly.
3848 ** Reading floating-point numbers with *READ-BASE* set to a number
3849 more than 10 works correctly.
3850 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3851 the readtable currently in effect.
3853 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3854 * minor incompatible change: parsing of namestrings on a physical
3855 (Unix) host has changed; numbers after the final #\. in a
3856 namestring are no longer interpreted as a version field. This is
3857 intented to be largely invisible to the user, except that the
3858 meaning of the namestring "*.*.*" has changed: it now refers to a
3859 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3860 should usually be replaced by
3861 (make-pathname :name :wild :type :wild :version :wild)
3862 with the added benefit that this is more likely to be portable.
3863 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3864 option to OPEN now signals an error if the file being opened
3865 exists; this may have an impact on existing code.
3866 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3867 signals received, on the PowerPC platforms (both Linux and
3868 Darwin). (thanks to Pierre Mai for pointing out the location of
3870 * several fixes on OS X: The system now builds and runs cleanly on
3871 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3872 (thanks to Brian Mastenbrook)
3873 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3874 second-resolution: integer multiples of 1/3600 between -24 and 24.
3875 (thanks to Vincent Arkesteijn)
3876 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3877 type when called with 1 argument; PEEK-CHAR checked type of
3878 PEEK-TYPE only after having read first character from a
3879 stream. (reported by Peter Graves)
3880 * bug fix: the garbage collector now has much better locality
3881 behaviour, and in particular no longer treats all memory as being
3882 exhausted when many small objects point to each other in a deeply
3884 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3885 recognized as being TYPEP their class.
3886 * bug fix: the PUSHNEW documentation string has been corrected.
3887 (thanks to Vincent Arkesteijn)
3888 * bug fix: defaulting of the value for the last of an atypically
3889 large number of multiple values being bound was not being
3890 performed correctly on the Alpha or PPC platforms
3891 * optimization: implemented multiplication as a modular
3892 (UNSIGNED-BYTE 32) operation on the x86 backend.
3893 * optimization: SEARCH on simple-base-strings can now be open-coded.
3894 (see also contrib/compiler-extras.lisp for inspiration for
3895 teaching the compiler about the Boyer-Moore algorithm).
3896 * value, returned by MAX (and MIN) called with several EQUALP, but
3897 not EQL, arguments now does not depend on compiler settings.
3898 * fixed some bugs revealed by Paul Dietz' test suite:
3899 ** in stack analysis liveness information is propagated from
3900 non-local entry points.
3901 ** pathwise CAST removing failed when the CAST node did not start
3903 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3904 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3906 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3907 host is already defined.
3908 ** RENAME-FILE works on streams instead of signalling an internal
3910 ** PEEK-CHAR uses the current readtable when determining whether
3911 or not a character is whitespace.
3912 ** MERGE-PATHNAMES handles the case when the pathname does not
3913 specify a name while the default-pathname specifies a version.
3914 ** Pathnames now stand a better chance of respecting print/read
3916 ** Attempting to use standardized file system operators with a
3917 pathname with invalid :DIRECTORY components signals a
3919 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3921 ** DIRECTORY on logical pathnames is more correct.
3922 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3923 signal a TYPE-ERROR if their argument is not a stream.
3924 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3925 designator argument does not designate a stream.
3926 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3927 examining the synonym.
3928 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3930 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3931 element-type larger than ([UN]SIGNED-BYTE 32).
3933 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3934 * When built with the :SB-FUTEX feature, threaded builds now take
3935 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3936 for faster/more reliable mutex and condition variable support.
3937 * Incompatible change (but one you probably shouldn't have been using
3938 anyway): the interface and code for arbitrating between multiple
3939 threads in the same user session has been redesigned.
3940 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3941 error when called without an explicit environment argument.
3942 (thanks to Nikodemus Siivola)
3943 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3944 confused about their position. (thanks to Adam Warner and Gerd
3946 * bug fix: Pretty printing backquoted forms with unquotations in the
3947 argument list position of various code constructs such as LAMBDA
3948 now works correctly. (reported by Paul Dietz)
3949 * bug fix: Pretty printing unquotations no longer loses all
3950 stream position information.
3951 * optimization: performance of string output streams is now less
3952 poor for multiple small sequence writes.
3953 * optimization: performance of CSUBTYPEP in the presence of complex
3954 expressions involving CONS and NOT many times has been improved.
3955 (reported by Paul Dietz)
3956 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3958 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3959 streams for the REPL, for the debugger, and so on. (thanks to
3961 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3962 * fixed some bugs revealed by Paul Dietz' test suite:
3963 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3964 is ignored if it is too small, rather than propagating through
3965 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3966 ** extremely complex negations of CONS types were not being
3967 sufficiently canonicalized, leading to inconsistencies in
3969 ** VALUES tranformer lost derived type.
3971 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3972 * fixed a bootstrapping bug: the build process no longer assumes
3973 that the various BOOLE-related constants have the same value in
3974 host and target lisps. (noted by Paul Dietz' test suite on an
3975 SBCL binary built from CLISP)
3976 * The system can now be dynamically linked on the MIPS platform,
3977 which enables dynamic loading of foreign code from Lisp. (thanks
3978 to Ralf Baechle for discussions on the MIPS ABI)
3979 * The system now records debugging information for its own source
3980 files in a filesystem-position-independent manner, relative to
3981 the "SYS" logical host.
3982 * fixed a compiler bug: MV-LET convertion did not check references
3983 to the "max args" entry point. (reported by Brian Downing)
3984 * tweaked disassembly notes to be less confident about proclaiming
3985 some instruction as an LRA. (thanks to Brian Downing)
3986 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3987 now each have their own history, command character, and other
3988 characteristics. (thanks to David Lichteblau)
3989 * fixed some bugs revealed by Paul Dietz' test suite:
3990 ** compiler failure in compiling LOGAND expressions including a
3992 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3993 shift greater than 32.
3994 ** FLUSH-DEST did not mark blocks for type check regeneration.
3995 ** HANDLER-CASE failed to accept declarations in handler clauses
3996 in some circumstances.
3998 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3999 * New code in contrib/sb-introspect (still probably not entirely
4000 stable yet) provides some support for smart Lisp development
4001 environments like SLIME.
4002 * The conditions signalled for errors occurring when loading .fasl
4003 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4004 in a way which should help ASDF recover gracefully.
4005 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4006 stuff has been cleaned up. If you code contrib/ stuff, this might
4007 affect you, and you can look at contrib/README, contrib/STANDARDS,
4008 and/or the 0.8.4.27 diff to check.
4009 * In full calls the compiler now does not generate checks for declared
4010 argument types for all arguments.
4011 * various threading fixes
4012 ** and some experimental patches which didn't make it into
4013 the main tree for this release, but which are shipped in
4014 contrib/experimental-thread.patch as a possible fix for some
4015 failures (deadlock, spinning...) in GC-intensive multithreaded
4017 * fixed PPC build problem (source code incompatibility of different
4018 library versions): added offsetof() hackery which attempts to divine
4019 where glibc maintainers put uc_mcontext today
4020 * fixed bug 282: compiler does not trust type assertions while passing
4021 arguments to a full call.
4022 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4023 &OPTIONAL VALUES type parameter.
4024 * fix bug 214: algorithm for noting rejected templates is now more
4025 similar to that of template seletion. (also reported by rydis on
4027 * fixed bug 141b: printing backquoted information readably and prettily
4028 inserts a space where necessary.
4029 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4030 (CHARACTER 10) are now reported as errors, rather than propagated
4031 as unknown types. (reported by piso on #lisp)
4032 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4033 with values NIL and :ERROR. (thanks to Milan Zamazal)
4034 * fixed bug 191c: CLOS now does proper keyword argument checking as
4035 described in CLHS 7.6.5 and 7.6.5.1.
4036 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4037 longer raise an error; further, using a list as a for-as-arithmetic
4038 counter now raises a meaningful error.
4039 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4040 now understood by sequence creation functions such as MAKE-SEQUENCE
4042 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4043 a STRING-INPUT-STREAM.
4044 * compiler enhancement: SIGNUM is now better able to derive the type
4046 * type declarations inside WITH-SLOTS are checked. (reported by
4048 * fixed some bugs revealed by Paul Dietz' test suite:
4049 ** incorrect optimization of TRUNCATE for a positive first
4050 argument and negative second.
4051 ** compiler failure in let-convertion during flushing dead code.
4052 ** compiler failure while deriving type of TRUNCATE on an
4053 interval, containing 0.
4054 ** ASH of a negative bignum by a negative bignum count now returns
4056 ** intersection of CONS types now canonicalizes properly, fixing
4057 inconsistencies in SUBTYPEP.
4059 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4060 * incompatible change: The --disable-debugger command line
4061 option now clobbers the debugger at a more fundamental
4062 level, by redefining #'INVOKE-DEBUGGER instead of by
4063 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4064 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4065 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4066 enter the debugger REPL and then suffer recursive errors
4067 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4068 while under the new system, BREAK in --disable-debugger mode
4069 terminates the system just as an unhandled error would.
4070 * fixed compiler performance when processing loops with a step >1;
4071 * bug fix: DOCUMENTATION now retrieves generic function
4072 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4073 support has been systematized, and now supports the methods
4074 specified by ANSI, along with a default method and a method for
4075 slot documentation. (reported by Nathan Froyd)
4076 * bug fix: effective methods associated with a generic function are
4077 no longer cached over a change of that generic function's method
4078 combination. (reported by Andreas Fuchs)
4079 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4080 names a non-existent directory. (thanks to Andreas Fuchs)
4081 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4082 the PPC platform, lead to stack corruption; this has been fixed.
4083 (reported by Rainer Joswig)
4084 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4085 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4086 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4087 arithmetic in general, is now much more reliable on the PPC
4089 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4090 platform now returns the right answer.
4091 * optimization: restored some effective method precomputation in
4092 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4093 precomputation is now tunable.
4094 * optimization: compiler-internal data structure use has been
4095 reviewed, and changes have been made that should improve the
4096 performance of the compiler by about 20%.
4097 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4098 simple-base-strings and simple-bit-vectors is improved.
4099 * optimization: the optimization of 32-bit logical and arithmetic
4100 functions introduced in version 0.8.3 on the x86 has been
4101 implemented on the mips, ppc and sparc platforms; an
4102 implementation of the same facility, but for 64-bit arithmetic,
4103 has been added for the alpha.
4104 * microoptimization: the compiler is better able to make use of the
4105 x86 LEA instruction for multiplication by constants.
4106 * bug fix: in some situations compiler did not report usage of
4107 generic arithmetic in (SPEED 3) policy.
4108 * bug 145b fix: compiler used wrong type specifier while converting
4109 MEMBER-types to numeric.
4110 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4112 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4113 index argument now works properly on the Alpha platform.
4114 * bug fix: floating point exception treatment on the Alpha platform
4116 * bug fix: FILE-POSITION works much better on string input and
4117 output streams. (thanks to Nikodemus Siivola)
4118 * bug fix: many threading/garbage collection symptoms sorted.
4119 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4120 might be pseudo-atomic.
4121 * internal change: Stopping for GC is now done with signals not
4122 ptrace. GC is now done in whichever thread wanted it, instead of
4124 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4126 * bug fix: result form in DO is not contained in the implicit
4128 * incompatible change: ICR structure is changed; the value part of
4129 CONTINUATION is now called LVAR; corresponding functions are
4130 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4131 * added type deriver for ISQRT (thanks to Robert E. Brown).
4132 * bug fix: better support for loading from the command line when an
4133 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4135 * fixed some bugs revealed by Paul Dietz' test suite:
4136 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4137 ** ROUND and FROUND now give the right answer when given very
4138 small float arguments.
4139 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4141 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4142 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4143 ** LCM should return a non-negative integer.
4144 ** PARSE-INTEGER returned the index of a terminator instead of the
4145 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4146 ** PARSE-INTEGER returned an incorrect index being applied to a
4148 ** LCM with two arguments of 0 returns 0 rather than signalling
4150 ** unsigned addition of a 32-bit constant with the high bit set no
4151 longer causes an internal compiler error on the x86.
4152 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4153 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4154 with negative last argument.
4155 ** byte specifiers with zero size and position no longer cause
4156 an error during type derivation.
4157 ** bignum multiplication on the Alpha platform now returns the
4159 * porting: The system now builds on SuSE AMD64, although it still
4160 generates a 32-bit binary.
4161 * .fasl file incompatibility: The fasl file version number has
4162 been incremented (because of the changes to internal compiler
4163 data structures referred to above).
4165 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4166 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4167 more accurately, on the Darwin kernel running on PowerPC hardware.
4168 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4169 * Compiler code deletion notes now signal a condition of type
4170 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4171 an associated MUFFLE-WARNING restart.
4172 * The compiler now performs limited argument count validation of
4173 constant format strings in FORMAT, and where appropriate in ERROR,
4174 CERROR and WARN. (thanks to Gerd Moellmann)
4175 * New ASDF-INSTALL contrib can be used for automatic download and
4176 installation of third-party Lisp code from CCLAN or other sites
4178 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4179 which forces another thread to execute a function supplied by the
4181 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4182 now accept and act upon their :ELEMENT-TYPE keyword argument.
4183 (reported by Martin Atzmueller, Edi Weitz)
4184 * bug fix: FILE-POSITION now accepts position designators up to
4185 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4186 is the greater. (thanks to Patrik Nordebo)
4187 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4188 Kalle Olavi Niemitalo)
4189 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4190 printable. (reported by Eric Marsden)
4191 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4192 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4193 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4194 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4195 (thanks to Stig Sandoe)
4196 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4197 UNREAD-CHAR now correctly includes the unread character in the
4198 target sequence. (thanks to Gerd Moellmann)
4199 * bug fix in threaded builds: the system can now be suspended and
4200 resumed by shell job control with minimal disruption.
4201 * bug fixes in times and timezones >2038AD
4202 * better handling of "where is GNU make?" problem in build scripts
4203 (thanks to Nikodemus Siivola)
4204 * new optimization: inside a named function any reference to a
4205 function with the same name is considered to be a self-reference;
4206 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4207 optimization quality.
4208 * new optimization on x86: logical functions and + now have
4209 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4210 used when the result is truncated to 32 bits.
4211 * VALUES declaration is partially enabled.
4212 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4213 * fixed some bugs revealed by Paul Dietz' test suite:
4214 ** The system now obeys the constraint imposed by
4215 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4216 types form a lattice under type intersection.
4217 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4218 ** ASSOC now ignores NIL elements in an alist.
4219 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4220 and (1+ MOST-POSITIVE-FIXNUM) answers.
4221 ** The addition of a method with invalid qualifiers to a generic
4222 function does not cause an error to be signalled immediately;
4223 a warning is signalled, and the error is generated only on
4224 calling the generic function.
4225 * changed .fasl file version number, in part to add type codes for
4226 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4227 obscure ANSI requirements
4229 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4230 * fixed bug 148: failure to inline-expand a local function left
4231 garbage, confusing the compiler.
4232 * fixed bugs 3cd: structure slot readers perform type check if the
4233 slot can have an invalid value (i.e. it is either not initialized
4234 or can be written with a less specific slot writer).
4235 * bug fix: the compiler now traps array references to elements off
4236 the end of an array; previously, the bounds checking in some
4237 circumstances could go off-by-one.
4238 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4240 * type declarations for array element types now obey the description
4241 on the CLHS page "Declaration TYPE", as per discussions on
4242 sbcl-help around 2003-05-08. This means that a declaration
4243 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4244 declaration, all references to BAR will be asserted or assumed
4245 (with THE, so dependent on compiler policy) to involve objects of
4246 type FOO. Note that no such declaration is implied in
4247 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4248 * declared types of functions from the "Conditions"
4249 chapter. (reported by Paul Dietz)
4250 * bug fix: CERROR accepts a function as its first argument.
4251 * bug fix: NTH an NTHCDR accept a bignum as index
4252 arguments. (reported by Adam Warner)
4253 * optimization: character compare routines now optimize comparing
4254 against a constant character. (reported by Gilbert Baumann)
4255 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4256 argument now works properly on the MIPS platform.
4257 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4258 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4259 declared to have a functional type, does not cause an error
4261 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4262 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4263 * fixed bug: if last continuation of a deleted block has a
4264 destination, this destination should be deleted too. (reported by
4266 * fixed a bug in the bootstrap process: the host compiler's values
4267 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4268 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4269 test case from Patrik Nordebo)
4270 * improved the ability of the disassembler on the PPC platform to
4271 provide helpful disassembly notes.
4272 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4273 the class in more cases than previously.
4274 * bug fix: FILE-POSITION now understands :START and :END for
4275 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4276 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4277 8) data. (thanks to David Lichteblau)
4278 * bug fix: it is possible to add a method to a generic function
4279 without lambda list.
4280 * bug fix: reader failed to signal END-OF-FILE inside an
4281 object representation. (reported by Nikodemus Siivola)
4282 * fixed some bugs revealed by Paul Dietz' test suite:
4283 ** LAST and [N]BUTLAST should accept a bignum.
4284 ** condition slot accessors are methods.
4285 ** (VECTOR NIL) is a subtype of STRING.
4287 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4288 * minor incompatible change: some nonsensical specialized lambda
4289 lists (used in DEFMETHOD) which were previously ignored now signal
4291 * minor incompatible change: the system is now aware of the types of
4292 variables in the COMMON-LISP package, and will signal errors for
4293 most violations of these type constraints (where previously they
4294 were silently accepted).
4295 * minor incompatible change: COMPILE-FILE now uses the freedom
4296 afforded (ANSI 3.2.2.3) to use derived function types for
4297 functions defined in the same file. This also permits the system
4298 to warn on static type mismatches and function
4299 redefinition. (Currently it does not work with high DEBUG level.)
4300 * minor incompatible change: VALUES declaration is disabled.
4301 * When issuing notes, the compiler now signals a condition of type
4302 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4303 restart for use in user handlers. It is expected that the
4304 COMPILER-NOTE condition will eventually become a condition
4305 supertype to a hierarchy of note types, which will then be
4306 handleable in a similar fashion. However, at the moment, no such
4307 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4308 but it's an implementation detail, not a classification for the
4310 * Changes in type checking closed the following bugs:
4311 ** type checking of unused values (192b, 194d, 203);
4312 ** template selection based on unsafe type assertions (192c, 236);
4313 ** type checking in branches (194bc).
4314 * A short form of VALUES type specifier has ANSI meaning (it has
4315 increased the number of situations when SBCL cannot perform type
4317 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4318 keywords or constants is permissible.
4319 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4320 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4321 classes. (thanks to Antonio Martinez)
4322 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4323 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4324 argument to a pretty-print stream. Instead, it leaves any such
4325 operations to DESCRIBE-OBJECT methods.
4326 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4328 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4329 lambda lists. (thanks to David Lichteblau)
4330 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4331 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4332 (thanks to Gerd Moellmann)
4333 * fixed bug 246: increased compilation speed of long
4334 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4336 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4338 * DEFCONSTANT now throws a condition of type
4339 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4340 constant to a non-EQL value; CONTINUE and ABORT restarts
4341 respectively change and preserve the value.
4342 * fixed bug 63: The code walker, part of the implementation of CLOS,
4343 is now better at handling symbol macros.
4344 * bug fix: There is no longer an internal implementation type named
4345 CL:LENGTH. (reported by Raymond Toy)
4346 * bug fix: In macro-like defining macros/special operators the
4347 implicit block does not enclose the lambda list.
4348 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4349 enclosed in parentheses) are not suitable as type specifiers, and
4350 their use properly signals an error now.
4351 * bug fix: An argument count mismatch for a type specifier in code
4352 being compiled no longer causes an unhandled error at compile
4353 time, but signals a compile-time warning.
4354 * fixed simple vector readable printing
4355 * bug fix: DESCRIBE takes more care over whether the class
4356 precedence list slot of a class is bound before accessing it.
4357 (reported by Markus Krummenacker)
4358 * bug fix: FORMATTER can successfully compile pretty-printer format
4359 strings which use variants of the ~* directive inside.
4360 * bug fix: SEARCH now applies its TEST predicate to the elements of
4361 the arguments in the correct order. (thanks to Wolfhard Buss)
4362 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4363 in type inference. (thanks to Robert E. Brown)
4364 * bug fix: Reading in symbols with an explicit package name of ""
4365 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4366 * fixed some bugs revealed by Paul Dietz' test suite:
4367 ** NIL is now allowed as a structure slot name.
4368 ** Arbitrary numbers, not just REALs, are allowed in certain
4369 circumstances in LOOP for-as-arithmetic clauses.
4370 ** Multiple class redefinitions before slot access no longer
4371 causes a type error.
4372 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4373 association between the name and a class.
4374 ** Generic functions with non-standard method-combination and over
4375 five methods all of which return constants no longer return NIL
4376 after the first few invocations. (thanks to Gerd Moellmann)
4377 ** CALL-NEXT-METHOD with no arguments now passes the original
4378 values of the arguments, even in the presence of assignment.
4379 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4381 ** DISASSEMBLE works with closures and funcallable instances.
4382 ** ADD-METHOD now returns the generic function, not the new method.
4383 ** FIND-METHOD signals an error if the lengths of the specializers
4384 is incompatible with the generic function, even if the ERRORP
4386 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4387 which its argument is a member.
4388 ** DEFCLASS only redefines the class named by its class-name
4389 argument if that name is the proper name of the class;
4390 otherwise, it creates a new class.
4391 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4392 of the UNBOUND-SLOT condition to the name of the slot.
4393 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4394 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4395 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4396 SLOT-MAKUNBOUND in the specified fashion.
4398 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4399 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4400 cross-compilation host. As a consequence, we can now bootstrap our
4401 way up to SBCL starting with a bare gcc toolchain and human-readable
4402 source code (first the source to CLISP, then the source to SBCL).
4403 * A contributed module containing a partial implementation of the
4404 simple-streams interface has been included. (thanks to Rudi
4406 * A contributed module implementing the RFC1321 Message Digest
4407 Algorithm, known as MD5, has been included.
4408 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4409 no longer has any effect, as the code controlled by this feature
4410 has been deleted. (As far as we know, no-one has ever built using
4411 this feature, and its semantics were confused in any case).
4412 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4413 work on conditions (as required by the ANSI specification),
4414 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4415 expected behaviour on conditions. Users should note, however,
4416 that such behaviour is not required by the ANSI specification,
4417 and so use of this behaviour may render their code unportable.
4418 * fixed some bugs revealed by Paul Dietz' test suite:
4419 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4421 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4422 ** SXHASH on condition objects no longer returns NIL.
4423 ** :ALLOCATION :CLASS slots are better treated; their values are
4424 updated on class redefinition, and initforms inherited from
4425 superclasses are applied.
4426 ** REMOVE-METHOD returns its generic function argument even when
4427 no method was removed.
4428 ** SHARED-INITIALIZE now initializes the values of the requested
4429 slots, including those with :ALLOCATION :CLASS.
4430 ** ALLOCATE-INSTANCE now works on structure classes defined via
4431 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4433 ** SLOT-EXISTS-P now works on conditions, as well as structures
4435 ** MAKE-LOAD-FORM now has the required methods on
4436 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4437 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4438 keyword, and now implements the SLOT-NAMES argument.
4439 ** methods with &OPTIONAL arguments no longer allow too many
4440 arguments to be passed in the call without error.
4441 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4442 option is consistent with the required arguments of the generic
4443 function lambda list.
4444 * bug fix: REQUIRE accepts a string designator. (Thanks to
4446 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4447 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4448 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4449 * bug fix: The compiler now checks for duplicated variables in macro
4451 * bug fix: SETQ on globals returns the correct value.
4452 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4453 not a COMPILER-ERROR (followed by some other strange error on
4454 choosing the CONTINUE restart).
4455 * bug fix: make.sh and friends are now more consistent in the way that
4456 they look for GNU "make".
4458 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4459 * experimental native threads support (on x86 Linux >=2.4 only).
4460 This is not compiled in by default: you need to add :SB-THREAD to
4461 the target features. See the "Beyond ANSI" chapter of the manual
4463 * fix for longstanding nonANSIism: The old distinction between
4464 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4465 The return value from CL:FIND-CLASS is now a CLOS class, and
4466 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4467 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4468 * An interface to the MetaObject Protocol, as described in Kiczales,
4469 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4470 MIT Press, 1991, is available from the SB-MOP package.
4471 * incompatible change: the SB-PCL package should now be considered
4472 a private implementation detail, and no longer a semi-private MOP
4474 * minor incompatible change: due to rearrangement for threads, the
4475 control stack and binding stack are now allocated at arbitrary
4476 addresses instead of being hardcoded per-port. Users affected by
4477 this probably have to be doing advanced things with shared
4478 libraries, and will know who they are.
4479 * minor incompatible change: Previously, all --eval forms used were
4480 processed with READ before any of them were processed with EVAL.
4481 Now each --eval form is processed with both READ and EVAL before
4482 the next --eval form is processed. (Thus package operations like
4483 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4484 work as the user might reasonably expect.)
4485 * minor incompatible change: *STANDARD-INPUT* is now only an
4486 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4488 * minor incompatible change: Y-OR-N-P is now character-oriented,
4489 not line oriented. Also, YES-OR-NO-P now works without errors.
4490 (thanks to Antonio Martinez)
4491 * sb-aclrepl module improvements: an integrated inspector, added
4492 repl features, and a bug fix to :trace command.
4493 * Known functions, which cannot be open coded by the backend, are
4494 considered to be able to check types of their arguments. (fixing
4495 a bug report by Nathan J. Froyd)
4496 * fixed a bug in computing method discriminating functions: It is
4497 now possible to define methods specialized on classes which have
4498 forward-referenced superclasses. (thanks to Gerd Moellmann)
4499 * fixed evaluation order in optional entries (reported by Gilbert
4501 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4502 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4503 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4504 required-by-AMOP NAME argument, as well as CLASS and
4505 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4506 * fixed bug 20: DEFMETHOD can define methods using names that are
4507 not the proper names of classes to designate class specializers.
4508 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4509 Unix file descriptors, instead of blowing up. (thanks to Antonio
4511 * Garbage collection refactoring: user-visible change is that a
4512 call to the GC function during WITHOUT-GCING will not do garbage
4513 collection until the end of the WITHOUT-GCING. If you were doing
4514 this you were probably losing anyway.
4515 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4516 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4517 TYPEP the latter but not the former.
4518 * The compiler issues a full WARNING for calls to undefined functions
4519 with names from the CL package.
4520 * MAP-INTO for a vector destination is open coded. (reported by
4521 Brian Downing on c.l.l)
4522 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4523 documentation string.
4524 * fixed some bugs revealed by Paul Dietz' test suite:
4525 ** COPY-ALIST now signals an error if its argument is a dotted
4527 ** Condition slots are now accessed more correctly in the presence
4528 of multiple initargs for a given slot.
4529 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4530 exclude restarts of the same name associated with a different
4532 ** DEFCLASS of forward-referenced classes with another
4533 forward-referenced class in the superclasses list no longer
4535 ** Condition slots are now initialized once each, not multiple
4536 times. (thanks to Gerd Moellmann)
4537 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4539 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4540 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4541 arguments contain duplicated elements.
4542 ** RESTART-CASE understands local macros.
4543 ** RESTART-CASE associates exactly its own restarts with a condition.
4544 ** ENDP in safe mode checks its argument to be of type LIST.
4545 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4546 in question is unbound.
4547 ** Optimized MAKE-INSTANCE functions no longer cause internal
4548 assertion failures in the presence of duplicate initargs.
4549 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4550 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4551 propagated even in the ctor optimized implementation of
4553 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4555 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4556 * a better implementation of SXHASH on (simple) bit vectors,
4557 measured both in execution speed and in distribution of results
4558 over the positive fixnums, has been installed. Likewise, a better
4559 implementation of EQUAL for simple bit vectors is now available.
4560 * fixed CEILING optimization for a divisor of form 2^k.
4561 * fixed bug 240 (emitting extra style warnings "using the lexical
4562 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4563 by Antonio Martinez)
4564 * fixed SXHASH, giving different results for NIL depending on type
4565 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4566 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4567 variable. (found by Rolf Wester)
4568 * SBCL does not ignore type declarations for special
4569 variables. (reported by rif on c.l.l 2003-03-05)
4570 * some bug fixes in contrib/sb-aclrepl/
4571 * fixed some bugs revealed by Paul Dietz' test suite:
4572 ** a bug in the CONS type specifier, whereby the CAR and CDR
4573 types got intertwined, has been fixed;
4574 ** the type system is now able to reason about the interaction
4575 between INTEGER and RATIO types more completely;
4576 ** APPEND, [N]REVERSE and NRECONC check that those their
4577 arguments, which must be proper lists, are really so;
4578 ** An array specialized to be unable to hold elements has been
4579 implemented, as required -- yes, really -- by ANSI;
4580 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4581 on malformed property lists;
4583 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4584 * incompatible packaging change: in line with Unix convention,
4585 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4586 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4587 * REQUIRE and PROVIDE are now optionally capable of doing something
4588 useful. See the documentation string for REQUIRE.
4589 * infrastructure for a managed SBCL contrib system: contributed
4590 modules in this release include:
4591 ** the ASDF system definition facility;
4592 ** an interface to the BSD Sockets API;
4593 ** an ACL-like convenience interface to the repl;
4594 (thanks to Kevin Rosenberg)
4595 ** an implementation of ROTATE-BYTE, with efficient implementation
4597 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4598 gives a closer approximation to the right answer than previously.
4599 (thanks to Raymond Toy)
4600 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4601 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4602 optional environment arguments, as required by ANSI.
4603 * fixed bugs in other functions taking environment objects, allowing
4604 calls with an explicit NIL environment argument to be compiled
4606 * fixed bug 228: primary return values from
4607 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4608 COMPILE or FUNCTION.
4609 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4610 :TYPE will no longer signal errors on innocuous objects.
4611 * fixed bug 231b: SETQ is better at respecting type declarations in
4612 the lexical environment.
4613 * fixed a bug in DEFCLASS: classes named by symbols with no or
4614 unprintable packages can now be defined.
4615 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4616 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4617 * fixed compiler failure related to checking types of functions.
4618 (reported by Robert E. Brown)
4619 * the compiler is now much more consistent in its error-checking
4620 treatment of bounding index arguments to sequence functions: in
4621 (SAFETY 3) code, errors will be signalled in almost all cases if
4622 invalid sequence bounding indices are passed to functions defined
4623 by ANSI to operate on sequences.
4624 * fixed a bug in the build procedure: documentation of SBCL-specific
4625 packages is now preserved and available in the final Lisp image.
4626 * lifted FDEFINITION lookup out of loops in the implementation of
4627 many list operations. (thanks to Robert E. Brown)
4628 * fixed a bug in the reader: the #n# reader macro now works for
4629 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4630 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4631 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4632 E. Brown and Tony Martinez respectively)
4633 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4634 SLOT-BOUNDP: in particular, it is now able to optimize them much
4635 better, and is now not vulnerable to having packages renamed.
4636 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4637 always called when a slot is not present in an instance. (thanks
4639 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4640 longer signal an error on unreading a character following EOF on
4641 the previous constituent stream. (thanks to Tony Martinez)
4642 * fixed some bugs revealed by Paul Dietz' test suite:
4643 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4644 not just nonnegative fixnums;
4645 ** the logical bit-array operators such as BIT-AND now accept an
4646 explicit NIL for their "opt-arg" argument (to indicate a
4647 freshly-consed result bit-array);
4648 ** ELT now signals an error on an invalid sequence index in safe
4650 ** the type system is now cleverer about negations of numeric
4651 types, and consequently understands the BIGNUM and RATIO types
4653 ** the type system is now cleverer about the interaction between
4654 INTEGER and RATIO types: while bugs still remain, many more
4655 cases are accurately computed;
4656 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4657 if it is in the last clause;
4658 ** CONSTANTLY now correctly returns a side-effect-free function in
4660 ** DECLARE is no longer treated as a special-operator; in
4661 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4662 * incremented fasl file version number due to the change in the
4663 DEFSTRUCT-SLOT-DESCRIPTION structure.
4665 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4666 * minor incompatible change: code processed by the "interpreter" or
4667 EVAL now has a compilation optimization policy of (DEBUG 2)
4668 (changed from (DEBUG 1)) to improve debuggability of interactive
4669 development, and to allow the use of the debug RETURN command in
4671 * an experimental implementation of the RETURN command for the
4672 debugger has been included. (thanks to Frederik Kuivinen)
4673 * fixed bug 62: constraints were not propagated into a loop.
4674 * fixed bug in embedded calls of SORT (reported and investigated by
4676 * fixed some bugs revealed by Paul Dietz' test suite:
4677 ** printing and reading of arrays with some dimensions having
4678 length 0 (thanks to Gerd Moellmann);
4679 ** BOA constructor with &AUX argument without a default value does
4680 not cause a type error;
4681 ** CONSTANTP now returns true for all self-evaluating objects.
4683 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4684 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4685 accessors that are related by inheritance, as specified in the
4686 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4687 Valtteri Vuorikoski)
4688 * The compiler is now able to inline functions that were defined in
4689 a complex lexical environment (e.g. inside a MACROLET).
4690 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4692 * Support for the upcoming FreeBSD-5.0 release has been included.
4693 (thanks to Dag-Erling Smorgrav)
4694 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4695 effect when it is not in a toplevel context.
4696 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4697 stand a better chance of being correct. (thanks to Gerd
4699 * fixed bug in COERCE, which now signals an error on coercing a
4700 rational to a bounded real type which excludes the expected
4702 * The compiler is now able to derive types more accurately from the
4703 COERCE and COMPILE functions.
4704 * fixed bug 223: functional binding is considered to be constant
4705 only for symbols in the CL package.
4706 * fixed bug 231: SETQ did not check the type of a variable being set
4707 (reported by Robert E. Brown)
4708 * A new optimization for MAKE-INSTANCE has been included, fixing
4709 various bugs (including relating to :ALLOCATION :CLASS slots and
4710 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4712 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4713 ** As required by ANSI, LOOP now disallows anonymous collection
4714 clauses such as COLLECT I in conjunction with aggregate boolean
4715 clauses such as THEREIS (= I 1);
4716 ** LOOP now signals an error when any variable is reused in the
4717 same loop (including the potentially useful construct analogous
4718 to WITH A = 1 WITH A = (1+ A);
4719 ** IT is only a special loop symbol within the first clause of a
4720 conditional loop clause;
4721 ** LOOP with a typed iteration variable over a hashtable now
4722 signals a type error iff it should.
4723 * fixed some other bugs revealed by Paul Dietz' test suite:
4724 ** FILE-STREAM now names the class previously known as FD-STREAM;
4725 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4726 argument) no longer signals an error;
4727 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4728 of the slot symbol, rather than using the current package
4729 ((:CONC-NAME "") continues to intern the slot's name in the
4731 * incremented fasl file version number, because of the incompatible
4732 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4733 of the new implementation of DEFINE-COMPILER-MACRO.
4735 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4736 * Support for building SBCL for MIPS platforms running in
4737 little-endian mode has now been checked in, and basic
4738 functionality on said platforms verified.
4739 * minor incompatible change: PCL now records the pathname of a file
4740 in which methods and the like are defined, rather than its
4742 * minor incompatible change: TRUENAME now considers the truename of
4743 a file naming a directory to be the pathname with :DIRECTORY
4744 component indicating that directory.
4745 * minor incompatible change: a NAMED clause in the extended form of
4746 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4747 reason for the previous behaviour is unclear.
4748 * more systematization and improvement of CLOS and MOP conformance
4749 in PCL (thanks to Gerd Moellman and Pierre Mai):
4750 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4752 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4753 primary methods with no specializers;
4754 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4756 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4757 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4758 FORWARD-REFERENCED-CLASSes; error reporting on
4759 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4761 ** SXHASH on CLOS instances now uses a slot internal to the
4762 instance to return different numbers on distinct instances,
4763 while preserving the same return value through invocations of
4765 ** DEFMETHOD signals errors when methods with longer incongruent
4766 lambda lists are added to generic functions;
4767 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4768 CLASS, as specified in AMOP;
4769 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4770 on the order returned by the primary method for classes of
4771 class STANDARD-CLASS;
4772 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4773 * fixed some bugs shown by Paul Dietz' test suite:
4774 ** DOLIST puts its body in TAGBODY;
4775 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4777 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4778 value producing form;
4779 ** if more variables are given to PROGV than values, extra
4780 variables are bound and made to have no value;
4781 ** NSUBSTITUTE on list arguments gets the right answer with
4783 ** ELT signals an error of type TYPE-ERROR when the index argument
4784 is not a valid sequence index;
4785 ** LOOP signals (at macroexpansion time) an error of type
4786 PROGRAM-ERROR when duplicate variable names are found;
4787 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4788 ** FUNCALL of special-operators now cause an error of type
4790 ** PSETQ now works as required in the presence of side-effecting
4791 symbol-macro places;
4792 ** NCONC accepts any object as its last argument;
4793 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4795 ** loop-for-as-package does not require a package to be explicitely
4797 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4799 * fixed bug 166: compiler preserves "there is a way to go"
4800 invariant when deleting code.
4801 * fixed bug 172: macro lambda lists with required arguments after
4802 &REST arguments now cause an error to be signalled. (thanks to
4804 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4805 bug. (thanks to Matthew Danish)
4806 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4808 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4809 arguments are lexically rebound. (thanks to Gerd Moellmann and
4811 * fixed bug 194: error messages are now more informative when there
4812 is no primary method applicable in a call to a generic
4813 function. (thanks to Gerd Moellmann)
4814 * fixed bug in command line argument checking (thanks to Julian
4816 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4817 (thanks to Matthew Danish)
4818 * incremented fasl file version number, because of the
4819 SXHASH-related changes in the layout of CLOS data structures
4821 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4822 * minor incompatible change: The runtime (the Unix executable named
4823 "sbcl") is now much pickier about the .core files it will load.
4824 Essentially it now requires .core files to descend from the same
4825 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4826 as the runtime does. (The intent is to prevent the crashes which
4827 can occur, and which can even be reported as mysterious failures,
4828 when people patch the sources or change the build parameters
4829 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4830 sbcl and .core files.)
4831 * fixed bug: VALUES-LIST is no longer optimized away.
4832 * fixed bug 142: The FFI conversion of C string values to Lisp
4833 string values no longer conses excessively. (thanks to Nathan
4834 Froyd porting Raymond Toy's fix to CMU CL)
4835 * began to systematize and improve MOP conformance in PCL (thanks to
4836 Nathan Froyd, Gerd Moellman and Pierre Mai):
4837 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4839 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4840 ** FINALIZE-INHERITANCE is now called on class finalization;
4841 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4842 argument precedence order.
4843 * fixed bug 202: The compiler no longer fails on functions whose
4844 derived types contradict their declared type.
4845 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4846 so it can be non-toplevel.
4847 * The fasl file version number has changed (because of the new
4848 implementation of DEFMACRO).
4849 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4850 safe code, that any length requirement by their type-specifier
4851 argument is valid. The exceptions to this are described in bug
4853 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4854 functions now check the types of their inputs as required by ANSI.
4855 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4856 introduced symbol is DECLAREd to be SPECIAL.
4857 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4858 * fixed bug: :COUNT argument to sequence functions may be negative
4859 * fixed bug: body of DO-SYMBOLS may contain declarations
4860 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4861 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4862 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4863 symbol macro only once
4864 * fixed printing of call frame when argument list is unavailable
4865 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4866 * compiler no longer signals WARNING on unknown keyword
4869 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4870 * A beta-quality port to the mips architecture running Linux,
4871 based on the old CMUCL backend, has been made. It has been tested
4872 on a big-endian kernel, and works sufficiently well to be able to
4873 rebuild itself; it has not been tested in little-endian mode.
4874 * fixed an inconsistency between gencgc.c and purify.c which made
4875 dumping/loading .core files unreliable
4876 * fixed bug 120a: The compiler now deals correctly with IFs where
4877 the consequent is the same as the alternative, instead of
4878 misderiving the return type. (thanks to Alexey Dejneka)
4879 * fixed bug 113: Logical pathnames are now dumpable (the logical
4880 host is resolved at load-time, throwing an error if it is not
4882 * fixed bug 174: FORMAT's error message is slightly clearer when a
4883 non-printing character is used in a format directive.
4884 * fixed several bugs in compiler checking of type declarations, i.e.
4885 violations of the Python "declarations are assertions" principle
4886 (thanks to Alexey Dejneka)
4887 * fixed several bugs in PCL's error checking (thanks to Gerd
4889 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4891 * fixed bug in compilation of functions as first class values
4892 (thanks to Antonio Martinez-Shotton)
4893 * The compiler's handling TYPE-ERRORs which it can prove will
4894 inevitably happen at runtime has been cleaned up and corrected
4895 in several ways. (thanks to Alexey Dejneka)
4896 * improved argument type checking for various basic arithmetic
4897 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4898 lavished on them in the past that they can be compiled in many
4899 ways in different special cases
4900 * fixed bug 181: compiler checks validity of user supplied type
4902 * cleaned up code flushing in optimization: Function calls which
4903 should signal errors for safety purposes (e.g. which ANSI says
4904 should signal errors when their arguments are of incorrect type)
4905 are no longer optimized away.
4906 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4907 * incremented fasl file version number, because changes in the
4908 implementation of sequence functions like COERCE caused
4909 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4910 in old inline expansions) to become undefined. (Actually these
4911 changes were later undone, so we might very well be binary
4912 compatible with 0.7.7 after all, but leaving the version number
4913 incremented seemed like the simplest and most conservative
4916 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4917 * An alpha-quality port to the parisc architecture running Linux,
4918 based on the old CMUCL backend, has been made. This, even more so
4919 than the other backends, should be considered still a work in
4920 progress; known problems include that the Linux kernel in 64-bit
4921 mode does not propagate the correct sigcontext structure to
4922 userspace, and consequently SBCL on a parisc64 kernel will not
4924 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4925 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4926 suppressed.) Also now that the compiler is looking at declarations
4927 in the environment, it checks optimization declarations as well,
4928 and suppresses inlining when (> DEBUG SPEED).
4929 * More fixes have been made to treatment of floating point exception
4930 treatment and other Unix signals. In particular, floating point
4931 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4932 * The detection and handling of control stack exhaustion (infinite
4933 or very deeply nested recursion) has changed. Stack exhaustion
4934 detection is now done by write-protecting pages at the OS level
4935 and applies at all optimization settings; when found, a
4936 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4937 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4938 be caught using IGNORE-ERRORS.
4939 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4940 correctly when transforming recursive LABELS functions to LETs.
4941 (thanks to Alexey Dejneka)
4942 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4943 that are names of constants or global variables.
4944 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4945 alien routines with docstrings.
4946 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4947 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4949 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4950 (thanks to Eric Marsden)
4951 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4952 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4953 * Bug fix: The SPARC backend can now compile functions involving
4954 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4955 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4956 to a functions expecting a PATHNAME-DESIGNATOR.
4957 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4958 lambda lists. (thanks to Alexey Dejneka)
4959 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4960 functions so that EXPORTing the name of the class doesn't cause
4961 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4962 to Antonio Martinez for reporting this)
4963 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4964 constant-folded without failing an assertion. (thanks to Einar
4965 Floystad Dorum for reporting this)
4966 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4967 types are now dealt with more correctly by the compiler.
4968 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4969 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4970 behaviour analogous to RENAME-FILE. This puts its behaviour more
4971 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4973 * The fasl file version number has changed again. (because of the
4974 bug fix involving the names of PCL MAKE-INSTANCE functions)
4976 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4977 * bug fix: Floating point exceptions are treated much more
4978 consistently on the x86/Linux and PPC/Linux platforms.
4979 * Array initialization with :INITIAL-ELEMENT is now much faster for
4980 cases when the compiler cannot open code the array creation, but
4981 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4982 array accesses have also seen a speed increase.
4983 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4984 specified. (This was at the root of some bad interactions between
4985 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4987 * bug fix: Internal error arguments for undefined functions are now
4988 computed correctly on the PPC/Linux platform.
4989 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4990 Raymond Toy's patch for CMU CL)
4991 * Support for the Solaris 9 operating environment has been included
4992 (thanks to Daniel Merritt)
4993 * A very ugly but hopefully complete draft of the missing FFI chapter
4994 of the manual has been created by reformatting the corresponding
4995 CMU CL manual chapter into (currently very ugly and incoherent)
4996 DocBook and bringing it up to date for SBCL behavior. Thus, the
4997 manual is now essentially complete, at least by my extreme
4998 once-and-only-once standards, whereby it's acceptable to refer to
4999 the doc strings of SB-EXT functions as the primary documentation.
5000 * The fasl file version number has changed again, due to cleanup of
5001 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5002 is no longer a static symbol.)
5004 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5005 * SBCL now builds with OpenMCL (version 0.12) as the
5006 cross-compilation host; also, more progress has been made toward
5007 bootstrapping under CLISP.
5008 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5010 * bug 158 fixed: The compiler can now deal with integer loop
5011 increments different from 1; fixing this turned out also to fix
5013 * bug 169 fixed: no more bogus warnings about using lexical bindings
5014 despite the presence of perfectly good SPECIAL declarations (thanks
5015 to David Lichteblau)
5016 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5017 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5018 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5020 * bug 180 fixed: Method combination specifications no longer ignore
5021 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5022 * bug fix: Structure type predicate functions now check their argument
5023 count as they should.
5024 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5025 correctly. (thanks to Pierre Mai)
5026 * minor incompatible change: The --noprogrammer option is deprecated
5027 in favor of the new --disable-debugger option, which is very similar.
5028 (The major difference is that it takes effect at a slightly different
5029 time at startup, causing handling of errors in --sysinit and
5030 --userinit files will be affected differently.) The
5031 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5032 been added to allow this functionality to be controlled from ordinary
5033 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5034 maintainers, who might want to run non-interactive scripts to
5035 build SBCL cores which will later be used interactively.)
5036 * minor incompatible change: The LOAD function no longer, when given
5037 a wild pathname to load, loads all files matching that pathname.
5038 Instead, an error of type FILE-ERROR is signalled.
5040 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5041 * bug 147 fixed: The compiler preserves its block link/count
5042 invariants more correctly now so that it doesn't crash. (thanks
5044 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5046 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5047 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5048 no-value-for-this-character as NIL (as specified by ANSI).
5049 * HOST-NAMESTRING on physical pathnames now returns a string that is
5050 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5051 (thanks to Christophe Rhodes)
5052 * The Alpha port handles icache flushing more correctly. (thanks to
5054 * More progress has been made toward bootstrapping under CLISP. (thanks
5055 to Christophe Rhodes)
5056 * The fasl file format has changed again, because dynamic loading
5057 on OpenBSD (which has non-ELF object files) motivated some cleanups
5058 in the way that foreign symbols are transformed and passed around.
5059 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5060 is no longer treated as whitespace by the reader, but instead as
5061 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5062 |A
\7fB|, instead of A as it used to.
5064 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5065 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5066 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5067 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5068 this as of 0.7.1.45, but was left out of the previous news section
5069 (thanks to Dan Barlow)
5070 * SBCL now runs on the Solaris operating system on SPARC architectures
5071 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5072 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5073 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5074 * SPARC backend cleanups, allowing builds of cores optimized for V8
5075 and V9 SPARCS, and also emission of code targeted to a particular
5076 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5078 * SBCL is closer to bootstrapping under CLISP, thanks to various
5079 fixes by Christophe Rhodes.
5080 * The fasl file format has changed again, to allow the compiler's
5081 INFO database to support symbol macros.
5082 * The user manual (in doc/) is formatted into HTML more nicely.
5083 (thanks to coreythomas)
5084 * The system is smarter about SUBTYPEP relationships, especially
5085 those involving NOT types (including types such as ATOM which are
5086 represented internally using NOT types). Thus SUBTYPEP is less
5087 likely to return (VALUES NIL NIL) in general, and in particular
5088 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5090 * The fasl file format has changed again, because the internal
5091 representation of types now includes a new slot to support the new
5092 SUBTYPEP-of-NOT-types logic.
5093 * (not a change in the main branch of SBCL, but a related prototype
5094 which can hopefully be merged into the main branch of SBCL in the
5095 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5096 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5097 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5098 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5099 dispatch macro character combinations. (thanks to Alexey Dejneka)
5100 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5101 that superficially look like logical namestrings correctly.
5102 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5104 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5105 default supplied-p) for &optional and &key arguments. (thanks to
5108 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5109 * incompatible change: The compiler is now less aggressive about
5110 tail call optimization, doing it only when (> SPACE DEBUG) or
5111 (> SPEED DEBUG). (This is an incompatible change because there are
5112 programs which relied on the old CMU-CL-style behavior to optimize
5113 away their unbounded recursion which will now die of stack overflow.)
5114 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5115 for non-GENCGC systems has been increased to 20M (since that
5116 seems much closer to the likely performance optimum for modern
5117 systems than the old 4M value was)
5118 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5119 and *DEBUG-PRINT-LEVEL*
5120 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5121 of CMU CL's support for SPARC, and various endianness and other
5122 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5123 * new syntactic sugar for the Unix command line: --load foo.bar is now
5124 an alternate notation for --eval '(load "foo.bar")'.
5126 ** The system now detects stack overflow and handles it gracefully,
5127 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5128 optimization settings. (This is a good thing in general, and
5129 its introduction in this version should be particularly timely
5130 for anyone whose code fails because of suppression of tail
5132 ** The system now hunts for the C variable "environ" in a more
5133 devious way, to avoid segfaults when the C library version differs
5134 between compile time and run time. (thanks to Christophe Rhodes)
5135 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5136 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5137 ** The compiler no longer issues bogus style warnings for undefined
5138 classes in the same source file as the DEFCLASSes which defined
5139 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5141 ** fixes in CONDITION class precedence list for undefined function
5142 errors (thanks to Alexei Dejneka)
5143 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5144 correctly. (thanks to Dan Barlow)
5145 ** portability fixes aiming at bootstrapping under CLISP (thanks
5146 to Dave McDonald and Christophe Rhodes)
5147 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5148 ** fixes in type translation and and type inference (thanks to
5150 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5151 ** various fixes in the new ports (thanks to Dan Barlow)
5152 * several changes related to debugging:
5153 ** suppression of tail recursion, as noted above
5154 ** stack overflow detection, as noted above
5155 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5156 is now the default. (For some time encapsulation has been more
5157 reliable than the breakpoint-based :ENCAPSULATE NIL
5158 implementation, at least on X86 systems; and I just noticed that
5159 encapsulation also seems closer to the spirit of the ANSI
5162 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5164 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5165 up properly again. (There was a packaging bug in 0.7.0 which
5166 left their definitions in SB-SYS::LOAD-FOREIGN and
5167 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5168 vital for most things which interface to C-level interfaces,
5169 like extensions working with sockets or databases or
5170 Perl-compatible regexes or whatever, and the need to fix
5171 this bug is the main reason that 0.7.1 was released so
5173 ** DEFGENERIC is now choosier about the methods it redefines, so that
5174 reLOADing a previously-LOADed file containing DEFGENERICs does
5175 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5176 cycle now works as it should. (thanks to Alexey Dejneka)
5177 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5178 fixed by Christophe Rhodes. (He actually submitted this patch
5179 months ago, and I delayed until after 0.7.0.)
5180 ** Bug 111 (internal compiler confusion about runtime checks on
5181 FUNCTION types) was fixed by Alexey Dejneka.
5182 * Some internal cleanups (getting rid of variables which aren't
5183 needed now that the byte interpreter is gone) caused the fasl
5184 file format number to change again.
5186 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5187 * major incompatible change: The default fasl file extension, i.e. the
5188 default extension for files produced by COMPILE-FILE, has changed
5189 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5191 ** There are many changes in the implementation of the compiler.
5192 SBCL is now essentially a compiler-only implementation of ANSI
5193 Common Lisp. EVAL still "interprets" a few special cases, but
5194 almost all the interesting cases are handled by creating
5195 a LAMBDA expression, calling COMPILE on it, then calling
5196 FUNCALL on the result.
5197 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5198 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5199 Since the code is newer, there might still be some new bugs
5200 (though not as many as before Martin Atzmueller's fixes:-). But
5201 the new code is substantially simpler and clearer, and hopefully
5202 any remaining bugs will be simpler, less fundamental, and more
5203 fixable then the bugs in the old code.
5204 ** The revised compiler is still a little unsteady on its feet.
5206 *** The debugging information it produces (particularly the names
5207 of FUNCTION objects) is sometimes much less useful than what
5208 the old compiler produced.
5209 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5210 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5211 within a MACROLET) has been temporarily weakened.
5212 ** There are new compiler optimizations for various functions:
5213 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5214 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5215 *** the math functions TRUNCATE, FLOOR, and CEILING
5216 *** the function-of-all-trades COERCE
5217 Mostly these should be transparent, but there's one
5218 potentially-annoying problem (bug 117): when the compiler
5219 inline-expands a function and does type analysis on the result,
5220 it can create control paths which have type mismatches, and
5221 when it can't prove that those control paths aren't taken,
5222 it will issue WARNINGs about the type mismatches. This is
5223 a particular problem in practice for the new sequence functions.
5224 It's not clear how this should be fixed, and for now, a
5225 workaround is given in the entry for 117 in the BUGS file.
5226 ** (Because of the interaction between the two previous items --
5227 occasional inlining problems and new inline expansions -- some
5228 of the new sequence function optimizations won't really kick in
5229 completely until debugging information, and then inlining, are
5230 straightened out in some future version.)
5231 * minor incompatible changes:
5232 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5233 DIRECTORY no longer implicitly promotes NIL slots of its
5234 pathname argument to :WILD. In particular, when you ask for the
5235 contents of a directory (which you used to be able to do without
5236 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5237 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5238 ** changes in behavior that ANSI explicitly defines to be
5239 implementation dependent:
5240 *** The new compiler-only implementation still conforms with ANSI,
5241 but acts a little different than before. Besides the obvious
5242 changes in performance tradeoffs (that the cost per form passed
5243 to EVAL has gone up, and the cost per form executed by EVAL
5244 has gone down), the behavior of the system changes a little
5245 because there are no longer any interpreted function objects.
5246 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5247 e.g. doing COMPILE on the output of interactive DEFUN is
5249 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5251 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5252 has changed from (:CL) to NIL.
5253 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5254 e.g. #\Newline and #\Tab, don't have names specified in the
5255 ANSI Common Lisp standard, is now based on their ASCII symbolic
5256 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5257 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5258 are no longer used for output.
5259 ** changes in internal implementation constants:
5260 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5261 4 million. (If your application spends a lot of time GCing and
5262 you have a lot of RAM, you might want to experiment with
5263 increasing it even more.)
5264 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5265 However, almost all old code should still continue to work without
5266 immediate update, as SB-C-CALL is now a (deprecated) nickname
5268 ** Old operator names in the style DEF-FOO are now deprecated in
5269 favor of new corresponding names DEFINE-FOO, for consistency with
5270 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5271 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5272 internal symbols, but a few supported extensions like
5273 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5274 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5275 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5276 etc. as you get deeper into recursive calls to the debugger
5277 command loop, instead of the old "5]", "5]]", "5]]]"
5278 sequence. (I was motivated to do this when squabbles between
5279 ILISP and SBCL left me very deeply nested in the debugger. In the
5280 short term, this change will probably provoke more ILISP/SBCL
5281 squabbles, but hopefully it will be an improvement in the long run.)
5282 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5283 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5284 function, since declaiming return types involving aliens is
5285 (1) annoyingly messy to do by hand and (2) vital to efficient
5286 compilation of code which calls such functions.
5287 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5288 longer reexported by the SB-EXT package. They're solely useful
5289 for alien code, so it seems more logical that you should get
5290 them from the SB-ALIEN package, not in SB-EXT.
5291 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5292 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5293 features. Instead, the code that they used to control is always
5294 built into the system.
5295 * many other bug fixes
5296 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5297 advantage of the new EVAL-WHEN stuff and to clean them up in
5298 general, and they are now more ANSI-compliant in a number of
5299 ways. Martin Atzmueller is responsible for a lot of this.
5300 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5302 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5303 *** correct ERROR type for various file operations
5304 *** some fixes for Lisp streams
5305 *** DEFMETHOD syntax checking
5306 *** changing old weird representation of debug information as
5307 strings (which, among their other deficiencies, don't transform
5308 correctly when you rename packages, and don't change their
5309 print representation when you change things like *PACKAGE*
5310 and *PRINT-LENGTH*) to symbols and lists of symbols
5311 He also made several improvements and fixed several bugs in DESCRIBE.
5312 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5314 *** misbehavior of WRITE-STRING/WRITE-LINE
5315 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5316 and several other LOOP problems as well
5317 *** DIRECTORY when similar filenames are present
5318 *** DEFGENERIC with :METHOD options
5319 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5320 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5321 *** argument ordering in FIND with :TEST option
5322 *** mishandled package designator argument in APROPOS-LIST
5323 *** various problems in the backquote readmacro
5324 *** a bug in APROPOS
5325 *** probably some others that I'm not describing very well here,
5326 since the CVS log documents them by reference to sbcl-devel
5327 messages, and the SourceForge archives aren't working well.:-(
5328 ** Dan Barlow improved the Alpha port (and is making progress on the
5329 PPC port, for those of you who think different).
5330 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5331 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5332 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5333 continues to work on the SPARC port (for those of you in a position
5334 to look down upon our little PC-compatible boxes from a great height).
5335 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5336 and uses that copy, rather than the current dynamic value, when
5337 it's trying to decide whether to truncate output. Thus e.g.
5338 (let ((*print-lines* 50))
5339 (pprint-logical-block (stream nil)
5341 (let ((*print-lines* 8))
5342 (print (aref possiblybigthings i) stream)))))
5343 should now truncate the logical block only at 50 lines, instead of
5344 often truncating it at 8 lines, as it did before.
5345 * The doc/cmucl/ directory, containing old CMU CL documentation
5346 from the time of the fork, is no longer part of the base system.
5347 SourceForge has shut down its anonymous FTP service, and with it
5348 my original plan for distributing the old CMU CL documentation
5349 there. For now, if you need these files you can download an old
5350 SBCL source release and extract them from it.
5351 * The fasl file version number changed again, for dozens of reasons,
5352 some of which are apparent above.
5354 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5355 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5356 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5357 patch, so that DISASSEMBLE output is much nicer.
5358 * The code in the SB-PROFILE package now seems reasonably stable.
5359 I still haven't decided what the final interface should look like
5360 (I'd like PROFILE to interact cleanly with TRACE, since both
5361 facilities use function encapsulation) but if you have a need
5362 for profiling now, you can probably use it successfully with
5363 the current CMU-CL-style interface.
5364 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5365 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5366 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5367 link now returns the dangling link itself, and for similar
5368 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5369 link itself. (In these cases the old code signalled an error and
5370 looped endlessly, respectively.) Thus, DIRECTORY now works even
5371 in the presence of dangling and cyclic symbolic links.
5372 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5373 is now a supported extension again, since the consensus on
5374 sbcl-devel was that it can be useful for ordinary development
5375 work, not just for debugging SBCL itself.
5376 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5377 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5378 that currently-defined functions might be redefined later with
5379 different return types.
5380 * Hash tables can be printed readably, as inspired by CMU CL code
5381 of Eric Marsden and SBCL code of Martin Atzmueller.
5382 * better error handling in CLOS method combination, thanks to
5383 Martin Atzmueller porting Pierre Mai's CMU CL patches
5384 * more overflow fixes for >16Mbyte I/O buffers
5385 * A bug in READ has been fixed, so that now a single Ctrl-D
5386 character suffices to cause end-of-file on character streams.
5387 In particular, now you only need one Ctrl-D at the command
5388 line (not two) to exit SBCL.
5389 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5391 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5392 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5393 does the right thing.
5394 * The implementation of some type tests, especially for CONDITION
5395 types, is now tidier and maybe faster, due to CMU CL code
5396 originally by Douglas Crosher, ported by Martin Atzmueller.
5397 * Some math functions have been fixed, and there are new
5398 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5399 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5400 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5401 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5402 likely to be built into sbcl-0.7.0.)
5403 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5404 CL, ported to SBCL by Martin Atzmueller)
5405 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5406 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5407 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5408 * There's a new slam.sh hack to shorten the edit/compile/debug
5409 cycle for low-level changes to SBCL itself, and a new
5410 :SB-AFTER-XC-CORE target feature to control the generation of
5411 the after-xc.core file needed by slam.sh.
5412 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5413 COMPILE-FILE is no longer supported, so that now every function
5414 gets an entry point, so that block compilation looks a little
5415 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5416 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5417 returns the number of bytes consed since the system started,
5418 rather than the number consed since the first time the function
5419 was called. (The new definition parallels ANSI functions like
5420 CL:GET-INTERNAL-RUN-TIME.)
5421 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5422 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5423 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5424 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5425 * Fasl file version numbers are now independent of the target CPU,
5426 since historically most system changes which required version
5427 number changes have affected all CPUs equally. Similarly,
5428 the byte fasl file version is now equal to the ordinary
5431 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5432 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5433 is no longer recognized. I apologize for this, because it was
5434 listed in SB-EXT as a supported extension, but I found that
5435 its existing behavior was poorly specified, as well as incorrectly
5436 specified, and it looked like too much of a mess to straighten it
5437 out. I have enough on my hands trying to get ANSI stuff to work..
5438 * many patches ported from CMU CL by Martin Atzmueller, with
5439 half a dozen bug fixes in pretty-printing and the debugger, and
5440 half a dozen others elsewhere
5441 * fixed bug 13: Floating point infinities are now supported again.
5442 They might still be a little bit flaky, but thanks to bug reports
5443 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5444 as flaky as they were.
5445 * The --noprogrammer command line option is now supported. (Its
5446 behavior is slightly different in detail from what the old man
5447 page claimed it would do, but it's still appropriate under the
5448 same circumstances that the man page talks about.)
5449 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5450 are now supported, and enabled by default. Thus, the compiler can
5451 handle many floating point and complex operations much less
5452 inefficiently. (Thus e.g. you can implement a complex FFT
5454 * The compiler now detects type mismatches between DECLAIM FTYPE
5455 and DEFUN better, and implements CHECK-TYPE more correctly, and
5456 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5457 thanks to patches from Martin Atzmueller.
5458 * various fixes to make the cross-compiler more portable to
5459 ANSI-conforming-but-different cross-compilation hosts (notably
5460 Lispworks for Windows, following bug reports from Arthur Lemmens)
5461 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5462 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5463 fixed thanks to Pierre Mai's CMU CL patches.
5464 * fixes to keep the system from overflowing internal counters when
5465 it tries to use i/o buffers larger than 16M bytes
5466 * fixed bug 45a: Various internal functions required to support
5467 complex special functions have been merged from CMU CL sources.
5468 (When I was first setting up SBCL, I misunderstood a compile-time
5469 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5470 * improved support for type intersection and union, fixing bug 12
5471 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5472 more obscure bugs as well
5473 * some steps toward byte-compiling non-performance-critical
5474 parts of the system, courtesy of patches from Martin Atzmueller
5475 * Christophe Rhodes has made some debian packages of sbcl at
5476 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5477 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5478 stable, but are nonetheless usable. When he's ready, I'd be happy
5479 to add them to the SourceForge "File Releases" section. (And if
5480 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5481 * new fasl file format version number (because of changes in
5482 internal representation of (OR ..) types to accommodate the new
5483 support for (AND ..) types, among other things)
5485 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5486 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5488 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5490 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5491 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5492 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5493 * DESCRIBE now works on structure objects again.
5494 * Most function call argument type mismatches are now handled as
5495 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5496 know whether the function will be redefined before the call is
5497 executed. (The compiler could flag local calls with full WARNINGs,
5498 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5499 it doesn't keep track of enough information to know whether calls
5500 are local in this sense.)
5501 * Compiler output is now more verbose, with messages truncated
5502 later than before. (There should be some supported way for users
5503 to override the default verbosity, but I haven't decided how to
5504 provide it yet, so this behavior is still controlled by the internal
5505 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5506 src/compiler/ir1util.lisp.)
5507 * Fasl file format version numbers have increased again, because
5508 support for the Gray streams extension changes the layout of the
5509 system's STREAM objects.
5510 * The Gray subclassable streams extension now works, thanks to a
5511 patch from Martin Atzmueller.
5512 * The full LOAD-FOREIGN extension (not just the primitive
5513 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5514 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5515 but like most other programs, it defaults to copying the Unix
5516 environment from the original process instead of starting the
5517 new process in an empty environment.
5518 * Extensions which manipulate the Unix environment now support
5519 an :ENVIRONMENT keyword option which doesn't smash case or
5520 do other bad things. The CMU-CL-style :ENV option is retained
5521 for porting convenience.
5522 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5523 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5525 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5527 * A patch from Martin Atzmueller seems to have solved the SIGINT
5528 problem, and as far as we know, signal-handling now works cleanly.
5529 (If you find any new bugs, please report them!)
5530 * The system no longer defaults Lisp source file names to types
5531 ".l", ".cl", or ".lsp", but only to ".lisp".
5532 * The compiler no longer uses special default file extensions for
5533 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5534 seems to expect a single default extension for all compiled code,
5535 and there's no compelling reason to try to stretch the standard
5536 to allow two different extensions.) Instead, byte-compiled files
5537 default to the same extension as native-compiled files.
5538 * Fasl file format version numbers have increased again, because
5539 a rearrangement of internal implementation packages made some
5540 dumped symbols in old fasl files unreadable in new cores.
5541 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5542 many fewer weird special cases.
5543 * Bug #17 (differing COMPILE-FILE behavior between logical and
5544 physical pathnames) has been fixed, and some related misbehavior too,
5545 thanks to a patch from Martin Atzmueller.
5546 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5547 by Tim Moore, ported to SBCL by Martin Atzmueller.
5548 * Martin Atzmueller fixed several filesystem-related problems,
5549 including bug #36, in part by porting CMU CL patches, which were
5550 written in part by Paul Werkowski.
5551 * More compiler warnings in src/runtime/ are gone, thanks to
5552 more patches from Martin Atzmueller.
5553 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5556 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5558 * DESCRIBE now works on CONDITION objects.
5559 * The debugger now handles errors which arise when trying to print
5560 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5562 * The build system now uses an additional file, customize-target-features.lisp,
5563 to allow local modifications to the target *FEATURES* list. (The point of
5564 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5565 debugging features enabled, without having to worry about propagating it
5566 into everyone's system when I do a "cvs update".) When no
5567 customize-target-features.lisp file exists, the target *FEATURES* list
5568 should be constructed the same way as before.
5569 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5570 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5571 warn about behavior which is undefined under the ANSI spec. Note: This
5572 is specified by ANSI, but it's not very popular with programmers.
5573 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5574 macro in the SBCL sources for an example of a workaround which you
5575 might use to make portable ANSI-standard code which does what you want.
5576 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5577 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5578 when it's used as a non-toplevel form. (This is required in order
5579 to implement the DEFCONSTANT-EQX macro.)
5580 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5581 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5582 funny things, due to bugs in the implementation of EVAL-WHEN
5583 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5584 non-toplevel DEFCONSTANTs are uncommon.)
5585 * The core file version number and fasl file version number have been
5586 incremented, because the old noncompliant DEFCONSTANT behavior involved
5587 calling functions which no longer exist, and because I also took the
5588 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5589 * fixed bug 1 (error handling before read-eval-print loop starts), and
5590 redid debugger restarts and related debugger commands somewhat while
5592 ** The QUIT debugger command is gone, since it did something
5593 rather different than the SB-EXT:QUIT command, and since it never
5594 worked properly outside the main toplevel read/eval/print loop.
5595 Invoking the new TOPLEVEL restart provides the same functionality.
5596 ** The GO debugger command is also gone, since you can just invoke
5597 the CONTINUE restart directly instead.
5598 ** The TOP debugger command is also gone, since it's redundant with the
5599 FRAME 0 command, and since it interfered with abbreviations for the
5601 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5603 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5604 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5605 some porting work by Martin Atzmueller)
5606 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5607 with a boatload of patches which he ported to SBCL. Now that those
5609 ** The system tries to make sure that its low-priority messages
5610 are prefixed by semicolons, to help people who like to use
5611 syntax highlighting in their ILISP buffer. (This patch
5612 was originally due to Raymond Toy.)
5613 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5614 patches originally written by Raymond Toy.
5615 ** The compiler understands coercion between single-value and
5616 multiple-VALUES type expressions better, getting rid of some very
5617 weird behavior, thanks to patches originally by Robert MacLachlan
5618 and Douglas Crosher.
5619 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5620 lambda lists, thanks to a patch originally by Pierre Mai.
5621 ** The system no longer bogusly warns about "abbreviated type
5623 ** The compiler gets less confused by inlining and RETURN-FROM,
5624 thanks to some patches originally by Tim Moore.
5625 ** The system no longer hangs when dumping circular lists to fasl
5626 files, thanks to a patch originally from Douglas Crosher.
5627 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5628 undefined function error.
5629 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5630 in structure slot initforms) for now, documented workaround instead:-|
5631 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5632 * fixed bug 5: added stubs for various Gray stream functions called
5633 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5634 installed, at least appropriate type errors are generated
5635 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5636 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5637 consistently in DEFMETHOD forms.
5638 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5639 it doesn't seem to affect SBCL after all
5640 * The C runtime system now builds with better optimization and many
5641 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5643 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5645 * The system is now under CVS at SourceForge (instead of the
5646 CVS repository on my home machine).
5647 * The new signal handling code has been tweaked to treat register
5648 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5649 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5650 downstream, e.g. in debug-int.lisp, has implicit dependencies
5651 on the unsignedness of integer representation of machine words,
5652 and that caused the system to bomb out with infinite regress
5653 when trying to recover from type errors involving signed values,
5654 e.g. (BUTLAST '(1 2 3) -1).)
5655 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5656 (This was one of the bugs Peter Van Eynde reported back in July.)
5657 * The system now uses code inspired by Colin Walters' O(N)
5658 implementation of MAP (from the cmucl-imp@cons.org mailing
5659 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5660 inline the MAP operation, and there is more than one
5661 sequence argument to the MAP call (so that it can't just
5662 do ETYPECASE once and for all based on the type of the
5663 single sequence argument). (The old non-inline implementation
5664 of the general M-argument sequence-of-length-N case required
5665 O(M*N*N) time when any of the sequence arguments were LISTs.)
5666 * The QUIT :UNIX-CODE keyword argument has been renamed to
5667 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5668 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5670 * Raymond Wiker's patches to port dynamic loading from Linux to
5671 FreeBSD have been added.
5672 * The BUGS file is now more nearly up to date, thanks in large part
5673 to Martin Atzmueller's review of it.
5674 * The debugger now flushes standard output streams before it begins
5675 its output ("debugger invoked" and so forth).
5676 * The core version number and fasl file version number have both
5677 been incremented, because of incompatible changes in the layout
5679 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5680 used to not be called for a saved Lisp image.)
5681 * Martin Atzmueller's version of a patch to fix a compiler crash,
5682 as posted on sbcl-devel 13 September 2000, has been installed.
5683 * Instead of installing Martin Atzmueller's patch for the
5684 compiler transform for SUBSEQ, I deleted the compiler transform,
5685 and transforms for some similar consing operations.
5686 * A bug in signal handling which kept TRACE from working on OpenBSD
5688 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5689 away by constant folding
5690 * The system now defines its address space constants in one place
5691 (in the Lisp sources), and propagates them automatically elsewhere
5692 (through GENESIS and the sbcl.h file). Therefore, patching the
5693 address map is less unnecessarily tedious and error-prone. The
5694 Lisp names of address space constants have also been systematized.
5695 * CVS tags like dollar-Header-dollar have been removed from
5696 the sources, because they have never saved me trouble and
5697 they've been source of trouble working with patches and other
5698 diff-related operations.
5699 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5700 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5702 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5704 * The system has been ported to OpenBSD.
5705 * The system now compiles with a simple "sh make.sh" on the systems
5706 that it's supported on. I.e., now you no longer need to tweak
5707 text in the target-features.lisp-expr and symlinks in src/runtime/
5708 by hand, the make.sh takes care of it for you.
5709 * The system is no longer so grossly inefficient when compiling code
5710 involving vectors implemented as general (not simple) vectors (VECTOR T),
5711 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5712 which dares to use the various sequence functions on non-simple
5713 vectors, takes less of a performance hit.
5714 * There is now a primitive type predicate VECTOR-T-P
5715 to test for the (VECTOR T) type, so that e.g.
5716 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5717 can now be compiled with some semblance of efficiency. (The old code
5718 turned the type declaration into a full call to %TYPEP at runtime!)
5719 * AREF on (VECTOR T) is still not fast, since it's still compiled
5720 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5721 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5722 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5723 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5724 without making full calls to SUBTYPEP at runtime.
5725 (Some analogous efficiency issues for non-simple vectors specialized to
5726 element types other than T, or for non-simple multidimensional arrays,
5727 have not been addressed. They could almost certainly be handled the
5728 same way if anyone is motivated to do so.)
5729 * The changes in array handling break binary compatibility, so
5730 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5731 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5732 instead of (VALUES T T).
5733 * By following the instructions that Dan Barlow posted to sbcl-devel
5734 on 2 July 2000, I was able to enable primitive dynamic object
5735 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5736 functionality is not implemented (since it calls ld to resolve
5737 library references automatically, requiring RUN-PROGRAM for its
5738 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5739 try to resolve library references) is now supported.
5740 * The system now flushes the standard output streams when it terminates,
5741 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5742 them at several other probably-convenient times, e.g. in each pass of
5743 the toplevel read-eval-print loop, and after evaluating a form given
5744 as an "--eval" command-line option. (These changes were motivated by a
5745 discussion of stream flushing issues on cmucl-imp in August 2000.)
5746 * The source transform for TYPEP of array types no longer assumes
5747 that an array whose element type is a not-yet-defined type
5748 is implemented as an array of T, but instead punts, so that the
5749 type will be interpreted at runtime.
5750 * There is now some support for cross-compiling in make.sh: each of
5751 the phases of make.sh has its own script. (This should be transparent
5752 to people doing ordinary, non-cross-compile builds.)
5753 * Since my laptop doesn't have hundreds of megabytes of memory like
5754 my desktop machine, I became more motivated to do some items on
5755 my to-do list in order to reduce the size of the system a little:
5756 ** Arrange for various needed-only-at-cold-init things to be
5757 uninterned after cold init. To support this, those things have
5758 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5759 symbols with such names are now uninterned after cold init).
5760 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5761 fasl files for cold load.
5762 ** Remove the old compiler structure pooling code (which used to
5763 be conditional on the target feature :SB-ALLOC) completely.
5764 ** Redo the representation of some data in cold init to be more compact.
5765 (I also looked into supporting byte compiled code at bootstrap time,
5766 which would probably reduce the size of the system a lot, but that
5767 looked too complicated, so I punted for now.)
5768 * The maximum signal nesting depth in the src/runtime/ support code has
5769 been reduced from 4096 to 256. (I don't know any reason for the very
5770 large old value. If the new smaller value turns out to break something,
5771 I'll probably just bump it back up.)
5772 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5774 * Many, many bugs reported by Peter Van Eynde have been added to
5775 the BUGS list; some have even been fixed.
5776 * While enabling dynamic object file loading, I tried to make the
5777 code easier to understand, renaming various functions and variables
5778 with less ambiguous names, and changing some function calling
5779 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5780 * While trying to figure out how to do the OpenBSD port, I tried to
5781 clean up some of the code in src/runtime/. In particular, I dropped
5782 support for non-POSIX signal handling, added various comments,
5783 tweaked the code to reduce the number of compilation warnings, and
5784 renamed some files to increase consistency.
5785 * To support the new automatic configuration functionality in make.sh,
5786 the source file target-features.lisp-expr has been replaced with the
5787 source file base-target-features.lisp-expr and the machine-generated
5788 file local-target-features.lisp-expr.
5789 * fixed a stupid quoting error in make.sh so that using CMU CL
5790 "lisp -batch" as cross-compilation host works again
5792 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5794 * DESCRIBE no longer tries to call itself recursively to describe
5795 bound/fbound values, so that it no longer fails on symbols which are
5796 bound to themselves (like keywords, T, and NIL).
5797 * DESCRIBE now works on generic functions.
5798 * The printer now prints less-screwed-up representations of closures
5799 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5800 * A private symbol is used instead of the :EMPTY keyword previously
5801 used to mark empty slots in hash tables. Thus
5802 (DEFVAR *HT* (MAKE-HASH-TABLE))
5803 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5804 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5805 now does what ANSI says that it should. (You can still get
5806 similar noncompliant behavior if bang on the hash table
5807 implementation with all the symbols you get back from
5808 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5809 This breaks binary compatibility, since tests for equality to
5810 :EMPTY are wired into things like the macroexpansion of
5811 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5813 * There's now a minimal placeholder implementation for CL:STEP,
5814 as required by ANSI.
5815 * An obscure bug in the interaction of the normal compiler, the byte
5816 compiler, inlining, and structure predicates has been patched
5817 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5818 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5820 * Missing ordinary arguments in a macro call are now detected even
5821 when the macro lambda list contains &KEY or &REST.
5822 * The debugger no longer complains about encountering the top of the
5823 stack when you type "FRAME 0" to explicitly instruct it to go to
5824 the top of the stack. And it now prints the frame you request even
5825 if it's the current frame (instead of saying "You are here.").
5826 * As specified by ANSI, the system now always prints keywords
5827 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5829 * The default initial SIZE of HASH-TABLEs is now smaller.
5830 * Type information from CLOS class dispatch is now propagated
5831 into DEFMETHOD bodies, so that e.g.
5832 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5834 is now basically equivalent to
5835 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5836 (DECLARE (TYPE SINGLE-FLOAT X))
5838 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5839 operation, without having to do run-time type dispatch.
5840 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5841 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5842 * Since I don't seem to be making big file reorganizations very often
5843 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5844 is overflowing my ability to conveniently back them up), I've finally
5845 checked the system into CVS. (The CVS repository is on my home system,
5846 not at SourceForge -- putting it on SourceForge might come later.)
5847 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5848 high-level GC-NOTIFY-FOO functions send their output. (There's
5849 still very little control of where low-level verbose GC functions
5850 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5851 less than it used to -- the GC-NOTIFY-FOO functions are now under
5852 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5853 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5854 in only one place in the source code, and propagates it automatically
5855 everywhere that it's needed. Thus e.g. when I bump the version from
5856 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5857 * The C source files now include boilerplate legalese and documentation
5858 at the head of each file (just as the Lisp source files already did).
5859 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5860 to his page will be replaced with a link to his new CLiki service.
5862 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5864 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5865 * The build process now looks for GNU make under the default name "gmake",
5866 instead of "make" as it used to. If GNU make is not available as "gmake"
5867 on your system, you can change this default behavior by setting the
5868 GNUMAKE environment variable.
5869 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5870 can build without error under CMU CL.
5872 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5874 * There is now a partial SBCL user manual (with some new text and some
5875 text cribbed from the CMU CL manual).
5876 * The beginnings of a profiler have been added (starting with the
5877 CMU CL profiler and simplifying and cleaning up). Eventually the
5878 main interface should be through the TRACE macro, but for now,
5879 it's still accessed through vaguely CMU-CL-style functions and macros
5880 exported from the package SB-PROFILE.
5881 * Some problems left over from porting CMU CL to the new
5882 cross-compilation bootstrap process have been cleaned up:
5883 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5884 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5885 part when getting rid of the compiler *BACKEND* stuff.)
5886 ** The value of *NULL-TYPE* was screwed up, because it was
5887 being initialized before the type system knew the final
5888 definition of the 'NULL type. This screwed up several key
5889 optimizations in the compiler, causing inefficiency in all sorts
5890 of places. (I found it because I wanted to understand why
5891 GET-INTERNAL-RUN-TIME was consing.)
5892 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5893 PROCLAIM FTYPE information. Unfortunately this broke binary
5894 compatibility again, since now the forms output by DEFGENERIC
5895 to refer to functions which didn't exist in 0.6.3.
5896 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5897 can use the new (as of 0.6.3) transform for SOME into MAP into
5899 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5900 values to (INTEGER 0 1000000), so that the time code will no longer
5901 occasionally get blown up by Linux returning 1000000 microseconds
5902 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5903 its output conform to the ANSI spec. (Alas, this makes its output
5904 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5905 * A full call to MAP NIL with a single sequence argument no longer conses.
5906 * fixes to problems pointed out by Martin Atzmueller:
5907 * The manual page no longer talks about multiprocessing as though
5908 it were currently supported.
5909 * The ILISP support patches have been removed from the distribution,
5910 because as of version 5.10.1, ILISP now supports SBCL without us
5911 having to maintain patches.
5912 * added a modified version of Raymond Toy's recent CMU CL patch for
5913 EQUALP comparison of HASH-TABLE
5915 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5917 * The system still can't cross-compile itself with
5918 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5919 entails), but at least it can compile more of itself that way
5920 than it used to be able to, and various buglets which were uncovered
5921 by trying to cross-compile itself that way have now been fixed.
5922 * This release breaks binary compatibility again. This time
5923 at least I've incremented the FASL file format version to 2, so that the
5924 problem can be detected reliably instead of just causing weird errors.
5925 * various new style warnings:
5926 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5927 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5928 ** using the lexical binding of a variable named in the *FOO* style
5929 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5930 as specified by ANSI.
5931 * *RANDOM-STATE* is no longer automatically initialized from
5932 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5933 default behavior of the system is to repeat its behavior every time
5934 it's run. If you'd like to change this behavior, you can always
5935 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5936 old convention there was no comparably easy way to get the system to
5937 repeat its behavior every time it was run.
5938 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5939 FTYPE declarations has been removed, in favor of their ANSI
5940 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5941 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5942 the types of their sequence arguments can be determined at compile time.
5943 This is done through a new open code expansion for MAP which eliminates
5944 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5945 argument types can be determined at compile time.
5946 * The optimizer now transforms COERCE into an identity operation when it
5947 can prove that the coerced object is already of the correct type. (This
5948 can be a win for machine generated code, including the output of other
5949 optimization transforms, such as the MAP transform above.)
5950 * Credit information has been moved from source file headers into CREDITS.
5951 * Source file headers have been made more standard.
5952 * The CASE macro now compiles without complaining even when it has
5955 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5957 * (Note that the way that the PCL macroexpansions were rewritten
5958 to accommodate the change in DEFGENERIC below breaks binary
5959 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5960 not run under sbcl-0.6.2. Once we get out of alpha releases,
5961 i.e. hit release 1.0.0, we'll probably try to maintain binary
5962 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5963 and sbcl-1.4.4. Until then, however, it might be fairly common
5964 for maintenance releases to break binary compatibility.)
5965 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5967 * The reporting of unhandled signals has been changed to print some
5968 explanatory text as well as the report form. (Previously only
5969 the report form was printed.)
5970 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5971 it defines, so that the compiler no longer issues undefined function
5972 warnings for compiled-but-not-yet-loaded generic functions.
5973 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5974 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5975 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5976 section of the ANSI spec are supported.
5977 * The "" nickname for the "KEYWORD" package has been removed.
5978 The reader still handles symbol tokens which begin with a package marker
5979 as keywords, but it doesn't expose its mechanism for doing so in the
5980 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5981 * The system now issues STYLE-WARNINGs for contradictory TYPE
5982 proclamations. (Warnings for contradictory FTYPE proclamations would
5983 be nice too, but those can't be done usefully unless the type system
5984 is made smarter about FUNCTION types.)
5985 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5986 systematized, so that "*target-*.lisp is supposed to exist only on the
5987 target and imply that there's a related file which exists on the
5988 host, and *host-*.lisp is supposed to exist only on the host and imply
5989 that there's a related file which exists on the target. This involves a
5990 lot of renaming. Hopefully the acute confusion caused by the renaming
5991 will be justified by the reduction in chronic confusion..
5992 ** runtime-type.lisp -> early-target-type.lisp
5993 ** target-type.lisp -> late-target-type.lisp
5994 ** early-host-format.lisp -> early-format.lisp
5995 ** late-host-format.lisp -> late-format.lisp
5996 ** host-error.lisp -> misc-error.lisp
5997 ** early-error.lisp -> early-target-error.lisp
5998 ** late-error.lisp -> late-target-error.lisp
5999 ** host-defboot.lisp -> early-defboot.lisp
6000 ** code/misc.lisp -> code/target-misc.lisp
6001 ** code/host-misc.lisp -> code/misc.lisp
6002 ** code/numbers.lisp -> code/target-numbers.lisp
6003 ** code/early-numbers.lisp -> numbers.lisp
6004 ** early-host-type.lisp -> early-type.lisp
6005 ** late-host-type.lisp -> late-type.lisp
6006 ** host-typep.lisp -> typep.lisp
6007 ** load.lisp -> target-load.lisp
6008 ** host-load.lisp -> load.lisp
6009 ** host-disassem.lisp -> disassem.lisp
6010 ** host-insts.lisp -> insts.lisp
6011 ** byte-comp.lisp -> target-byte-comp.lisp
6012 ** host-byte-comp.lisp -> byte-comp.lisp
6013 ** host-signal.lisp -> signal.lisp
6014 ** host-defstruct.lisp -> defstruct.lisp
6015 ** late-target-type.lisp -> deftypes-for-target.lisp
6016 Furthermore, several other previously target-only files foo.lisp (e.g.
6017 hash-table.lisp and random.lisp) have been split into a target-and-host
6018 foo.lisp file and a target-only target-foo.lisp file, with their key type
6019 definitions in the target-and-host part, so that the cross-compiler will
6020 know more about target types.
6021 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6022 gone away. In their place are various *BACKEND-FOO* variables
6023 corresponding to the slots of the old structure.
6024 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6025 into the target SBCL has been fixed.
6026 * The chill.lisp system for loading cold code into a running SBCL
6028 * Support for the CMU CL "scavenger hook" extension has been removed.
6029 (It was undocumented and unused in the CMU CL sources that SBCL was
6030 derived from, and stale in sbcl-0.6.1.)
6031 * Various errors in the cross-compiler type system were detected
6032 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6033 (enabling various consistency checks). Many of them were fixed,
6034 but some hard problems remain, so the compiler is back to
6035 running without *TYPE-SYSTEM-INITIALIZED* for now.
6036 * As part of the cross-compiler type system cleanup, I implemented
6037 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6038 * I have started adding UNCROSS calls throughout the type system
6039 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6040 on cross-compiler input files will be able to go away, and various
6042 * CONSTANTP now returns true for quoted forms (as explicitly required
6045 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6047 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6048 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6049 (MAKE-LIST -1). In the longer term, it ought to become true
6050 that declarations are assertions even at SAFETY 1. For now, it's not
6051 quite true even at SAFETY 3, but it's at least more nearly true..
6052 (Note that this change seems to increases the size of the system by
6053 O(5%) and to decrease the speed of the compiler by 20% or more.)
6054 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6055 for the problem of printing dozens of lines of distracting information
6056 about low-level system machinery as part of the top stack frame
6057 on entry to the debugger when an undefined function was called.
6058 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6059 is not reset to COMMON-LISP-USER.
6060 * Compilation of stuff related to dyncount.lisp has been made conditional
6061 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6062 smaller. The various dyncount-related symbols have been moved into
6063 a new "SB-DYNCOUNT" package.
6064 * tty-inspect.lisp has been renamed to inspect.lisp.
6065 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6066 feature has gone away. (When we eventually port to other flavors of
6067 libc and/or Unix, we'll try to make the differences between flavors
6068 invisible at the user level.)
6069 * Various other *FEATURES* tags, and/or their associated conditionals,
6070 have been removed if obsolescent, or given better documentation, or
6071 sometimes given more-mnemonic names.
6073 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6075 * tidied up "make.sh" script
6076 * tidied up system directory structure
6077 * better "clean.sh" behavior
6078 * added doc/FOR-CMUCL-DEVELOPERS
6079 * many many small tweaks to output format, e.g. removing possibly-confusing
6080 trailing #\. character in DESCRIBE-INSTANCE
6081 * (EQUALP #\A 'A) no longer signals an error.
6082 * new hashing code, including EQUALP hashing
6083 * tidied up Lisp initialization and toplevel
6084 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6085 * command line argument processing
6086 * added POSIX-GETENV function to deal with Unix-ish environment variables
6087 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6088 terminating SBCL on EOF
6089 * non-verbose GC by default
6090 * There is no more "sbcl" shell script; the sbcl file is now the C
6091 runtime executable (just like CMU CL).
6092 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6094 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6095 symbol and package information as Lisp native symbol and package objects
6096 instead of strings naming symbols and strings naming packages. This way,
6097 whenever packages are renamed (as in warm init), debug information is
6098 transformed along with everything else.
6099 * tweaked the optimization policy declarations which control the building
6100 of SBCL itself. Now, among other things, the system no longer saves
6101 source location debugging information. (This helps two problems at once
6102 by reducing SBCL size and by keeping SBCL from trying to look for its
6103 sources -- which may not exist -- when reporting errors.)
6104 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6105 debugging and testing purposes
6106 * cleaned up printing, making the printer call PRINT-OBJECT for
6107 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6108 methods, giving nearly-ANSI behavior
6109 * converted almost all special variables to use *FOO* naming convention
6110 * deleted PARSE-TIME functionality, since it can be done portably
6111 * moved some files out of cold init into warm init
6112 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6114 * regularized formatting of source files
6115 * added an install.sh script
6116 * fixed ridiculous memory usage of cross-compiler by making
6117 compiler/alloc.lisp not try to do pooling unless it can hook
6118 itself into the GC of the cross-compilation host. Now the system
6119 builds nicely on my old laptop.
6120 * added :SB-ALLOC in target-features.lisp-expr
6121 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6122 was not implemented)
6123 * re-did condition handling and note reporting in the compiler. Notes
6124 are no longer handled by signalling conditions. Style warnings
6125 and warnings are handled more correctly and reported in such a way
6126 that it's easy to find one or the other in your output (so that you
6127 can e.g. figure out which of many problems caused COMPILE-FILE to
6129 * changed the severity of several compiler warnings from full WARNING
6130 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6131 compiler note reporting so that it doesn't use the condition system
6132 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6133 COMPILE-FILE command)
6134 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6135 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6136 no longer supported, since their implementation was deeply intertwingled
6137 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6138 * removed bogus "support" for compiler macros named (SETF FOO), and
6139 removed the compiler macro for SETF INFO (but only after making a fool
6140 of myself on the cmucl-imp mailing list by posting a bogus patch for
6141 DEFINE-COMPILER-MACRO..)
6142 * Compiled files containing forms which have side effects on the Lisp
6143 reader (such as DEFPACKAGE forms) are now handled more correctly.
6144 (Compiler queuing of top level lambdas has been suppressed by setting
6145 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6146 * deleted various currently-unused source files, e.g. gengc.lisp. They
6147 may be added back at some point e.g. when porting to other architectures,
6148 but until they are it's distracting to distribute them and to try to
6150 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6151 there were so many of them they're just distractions, and UNCROSS is
6152 known to be able to handle the current sources
6153 * moved PROFILE functionality into TRACE, so that it will be clear
6154 how the wrapping and unwrapping of functions when you profile them
6155 interacts with the wrapping and unwrapping of functions when you
6156 trace them. (Actually, the functionality isn't there yet, but at least
6157 the interface specification is there. Hopefully, the functionality will
6158 arrive with some future maintenance release.)
6159 * removed host-oops.lisp
6160 * changed signature of QUIT function to allow UNIX-CODE argument
6161 * fixed READ-SEQUENCE bug
6162 * tweaked verbose GC output so that it looks more like the progress
6163 output that ANSI specifies for functions like LOAD
6164 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6165 * added <http://sbcl.sourceforge.com> to the banner information printed by