1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.48:
3 * enhancement: source locations are now available for files loaded as source,
4 compile-time-too evaluation, and initialization files.
5 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
6 virtual source-file information, eg. overriding input-file of COMPILE-FILE
7 when a temporary file is used for compilation.
8 * enhancement: ASDF has been updated to version 2.015.3.
9 * enhancement: backtraces involving frames from the default evaluator
11 * enhancement: RUN-PROGRAM works with user-defined binary input and output
13 * enhancement: more informative compile-time warnings and runtime
14 errors for type-errors detected at compile-time.
15 * enhancement: deadlock detection for mutexes and spinlocks.
16 * enhancement: dynamic-extent for &rest lists stack allocate only their
17 spines, not their argumets. While portable code should not rely on this,
18 particularly in combination with inlining, it should make dynamic-extent
19 easier and safer to use.
20 * enhancement: SB-POSIX improvements:
21 ** WNOHANG and WUNTRACED are exported.
22 ** SYSCALL-ERROR now also provides the name of the failing system call.
23 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
24 allows the compiler to automatically elide rest-list allocation so long
25 as the call sites are in functions that the compiler knows cannot escape.
27 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
28 uninterruptible, as well as blocking reads from socket streams created
29 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
30 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
31 from the to-char if the from-char is not a dispatch-macro character.
32 * bug fix: references to undefined variables in function calls that are
33 optimized away now signal a runtime error. (lp#722734)
34 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
35 types from a function defined in the same file. (regression from
38 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
39 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
40 years, is now no longer supported.
41 * enhancement: read() and write() have been added to SB-POSIX.
42 * enhancement: types of DEFSTRUCT constructors are proclaimed more
43 accurately, allowing better typechecking of call-sites.
44 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
45 are no longer caught. (reverted to pre 1.0.34 behaviour)
46 * optimization: slightly faster ISQRT. (lp#713343)
47 * bug fix: better support for Solaris /bin/sh in sh-based tests.
48 * bug fix: TRACE behaves better when attempting to trace undefined
49 functions. (lp#740717)
50 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
51 to (FUNCALL #'(LAMBDA ...) ...).
52 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
53 a compile-time error. (lp#720382)
54 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
56 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
57 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
58 optimization. (regression from 1.0.45.18/1.0.46.15)
59 * bug fix: package locks did not protects against compile-time side-effects
61 * bug fix: --dynamic-space-size argument is validated more carefully.
63 * bug fix: memory fault from printing a malformed simple-condition.
65 * bug fix: redefining classes so that slot-definition classes change now
66 engages the obsolete instance protocol. (lp#766271)
67 * bug fix: constant improper lists could break source coverage recording.
69 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
72 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
73 * bug fix: fix mach port rights leaks in mach exception handling code on
74 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
76 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
77 * enhancement: redefinition warnings for macros from different files. (lp#434657)
78 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
79 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
80 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
81 processed using EVAL -- now the appropriate toplevel form is reported instead.
82 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
83 declarations. (lp#726331)
84 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
85 that NIL/NULL is excluded from the type.
86 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
88 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
90 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
91 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
92 stack-allocated values out of their dynamic-extent. (lp#310175)
93 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
94 x86-64 builds caused a type-error.
95 * bug fix: calling COMPILE with something else than a lambda-expression as the
96 second argument reports a more sensible error. (lp#718905)
97 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
98 are detected. (lp#520607)
99 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
101 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
102 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
103 methods. (regression from 1.0.45.18)
104 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
105 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
106 * bug fix: several foreign functions accepting string also accepted NIL and
107 consequently caused a memory fault at 0 now signal a type-error instead.
109 * bug fix: under rare circumstances, constraint propagation could rewrite a
110 variable reference to refer to a variable not in scope, causing an error
111 during physical environment analysis when attempting to close over the
112 variable. (lp#551227)
113 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
115 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
116 * enhancement: largefile support on Solaris.
117 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
118 arguments (lp#710017)
119 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
120 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
122 * optimization: ERROR and CERROR are approximately 5 times faster.
123 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
124 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
125 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
126 up instance creation in those cases.
127 * optimization: arithmetic operations with multiple constant arguments in now
128 have them reduced at compile-time. (lp#676414)
129 * optimization: determining current character position on string-streams for
130 pretty-printing was overly slow.
131 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
132 lifetime analysis to overwrite closed-over variables (lp#681092).
133 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
134 were not handled correctly (lp#713063).
135 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
137 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
138 mistake. (lp#667297).
139 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
140 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
141 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
142 unintern the wrong symbol with the same name. (lp#693796)
143 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
144 making it possible to restore the initial table if it has been messed up.
147 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
148 * enhancement: ~/ and ~user/ are treated specially in pathnames.
149 Refer to documentation for details.
150 * enhancement: ASDF has been updated to version 2.010.
151 * optimization: mutated closed-over variables that are only accessed by
152 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
153 declared to be DYNAMIC-EXTENT) are stored directly in their containing
154 stack frame, rather than allocating a VALUE-CELL (lp#586103).
155 * optimization: UNWIND-PROTECT cleanup functions are now declared
157 * bug fix: backtracing function with &REST arguments now shows the full
158 argument list. (lp#310173)
159 * bug fix: return types for functions with complex lambda-lists are now
160 derived properly (lp#384892)
161 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
162 long string arguments slowed the compiler down to a crawl.
163 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
164 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
165 in the DEFMETHOD body.
166 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
167 messages, being instead replaced with the corresponding function name.
168 * bug fix: don't derive overly complex unions of numeric types for arithmetic
169 operators. (lp#309448)
171 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
172 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
173 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
174 * enhancement: ALLOCATION-INFORMATION also provides the page the object
176 * enhancement: default dynamic-space size can be configured at build-time
177 without touching source, using the --dynamic-space-size argument to make.sh.
178 * enhancement: DESCRIBE recognizes symbols naming optimization policy
179 qualities, and mentions ALWAYS-BOUND declarations.
180 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
182 * enhancement: ASDF has been updated to 2.009.
183 * enhancement: the system detects known type-erros in calls better,
184 signalling a full warning about violated proclaimed FTYPEs and violations
185 of derived FTYPEs within the same file, including self-calls.
186 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
187 * optimization: constant-folding exploits numeric and character types, in
188 addition member types.
189 * optimization: numeric, character and member types that are inhabited by
190 exactly one value are tested with EQL.
191 * optimization: more conditional branches are eliminated during IR1.
192 Branches are simplified before performing if/if-conversion, and simple
193 equivalent branches (that only read the same constant or variable) are
195 * improvements to the Windows port:
196 ** change: canonical unparsing form for pathname namestrings now uses / as
197 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
198 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
199 on Windows. (thanks to Kalyanov Dmitry)
200 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
202 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
203 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
204 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
205 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
207 * bug fix: interrupts arriving during CL:OPEN caused an error.
208 * bug fix: overeager character buffering could cause input to block
209 spuriously when reading from a pipe (lp#643686)
210 * bug fix: more efficient timer expiry should avoid starvation on systems
211 where number of SIGALRMs per second is restricted. (lp#375515)
212 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
213 * bug fix: compile-times no longer scale linearly with the size of
214 quoted lists in source-code. (lp#654289)
215 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
216 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
217 so badly. (lp#654485)
218 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
219 an error for eg. STRUCTURE. (lp#458015)
220 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
221 (lp#613871, thanks to Roman Marynchak)
222 * bug fix: more reliable &REST list type derivation. (lp#655203)
223 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
224 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
225 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
226 also declared NOTINLINE. (lp#655581)
227 * bug fix: the compiler could attempt to emit constant left shifts of
228 greater value than n-word-bits. (lp#309063)
229 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
230 type information for the function being set. (lp#659220)
231 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
232 containing self-calls were recompiled with a new signature, and failed
233 to warn when a self-call using the old signature was left in. (lp#655126)
234 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
235 :DEFAULT when the default external had character size other than 8 bits.
237 * bug fix: derived types of functions in the same file were implicitly
238 trusted, leading to potential heap corruption when those function were
239 defined incompatibly. (lp#657499)
240 * bug fix: existing ASDF source registries are ignored when building
242 * bug fix: short-form DEFSETF checks that the second argument is a symbol
243 (lp#655824, thanks to Roman Marynchak)
244 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
245 package-lock violation was detected. (lp#660752)
246 * bug fix: the system can store different docstrings for a single function
247 under different names. (lp#661631, regression from 1.0.29.24)
248 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
249 properly. (lp#384801)
250 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
251 of specified length could confuse the type derivation in unsafe code.
253 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
254 fork with multiple Lisp threads running is made on every platform,
255 not just Darwin. (lp#451111)
256 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
257 around when core was saved, which could cause undefined behaviour when the
259 * bug fix: Allow UNTRACE of functions that are no longer defined
260 (lp#667657, thanks to Attila Lendvai)
261 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
262 compile-time warning (lp#664373, thanks to Stas Boukarev)
264 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
265 * incompatible change: FD-STREAMS no longer participate in the serve-event
266 event-loop by default. (lp#316072)
267 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
268 affects streams from CL:OPEN.
269 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
270 default, but this is liable to change: applications needing serve-event
271 for socket streams should explicitly request it using :SERVE-EVENTS T
273 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
275 * enhancement: CLOS effective method functions and defclass slot typechecking
276 function now have debug names for use in backtraces and profiles.
277 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
279 * enhancement: symbols are printed using fully qualified names in several
280 error and warning messages which are often associated with package
281 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
282 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
283 thanks to Andrew Golding)
284 * bug fix: reading /proc files on Linux works. (lp#425199)
285 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
287 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
288 breaking code that tried to write the value of a printer control variable.
289 (lp#581564, thanks to Stas Boukarev)
290 * bug fix: WRITE compiler macro did not handle output stream designators
291 correctly. (lp#598374, thanks to Stas Boukarev)
292 * bug fix: better availability of names of foreign functions in backtraces
293 on Linux. (lp#626962, thanks to Stas Boukarev)
294 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
295 lp#627581, thanks to Josh Elsasser and Jim Wise)
296 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
297 thanks to Josh Elsasser)
298 * bug fix: using aliases for builtin classes as defmethod specializers
299 without adding DEFTYPEs for them works. (lp#618387)
300 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
302 * bug fix: legally dynamic-extent lists and vectors used as
303 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
304 * bug fix: inline-expansion creating references to dead lambda-variables
305 (lp#454681, thanks to Alexey Dejneka)
306 * bug fix: better error message for bogus numerical arguments to RANDOM.
307 (lp#598986, thanks to Stas Boukarev)
308 * bug fix: the compiler occasionally inlined references from incompatible
309 environments occurs. (lp#308951)
310 * bug fix: the compiler threw an error when trying to compile a local
311 function (labels or flet) known to take a specialized complex argument.
312 (not in launchpad, reported by sykopomp in #lispgames)
313 * bug fix: package-locks failed to protect against compile-time effects of
314 DEFUN when the symbol previously had a macro definition. (lp#576637)
315 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
316 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
317 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
318 * bug fix: evaluation in debugger REPL works using the global context when
319 in frames that do not have sufficient debug information.
320 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
322 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
324 * bug fix: interrupt taking longer than the requested period caused SLEEP
325 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
327 changes in sbcl-1.0.42 relative to sbcl-1.0.41
329 ** Cross-compilation host is now specified to make.sh using
330 command-line argument --xc-host=<command> instead of a positional
331 argument. (thanks to Daniel Herring)
332 ** Install location can be specified to make.sh using command-line
333 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
334 * optimization: The default implementation of
335 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
336 * enhancement: Explicit memory barrier operations are now available for use
337 by multithreaded code. See documentation for details.
338 * enhancement: Experimental support for threading on Linux/PPC.
339 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
340 * bug fix: EXPT signals an error if first argument is a zero and second
341 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
342 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
343 (lp#576594, thanks to Roman Marynchak)
344 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
345 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
347 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
348 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
349 cached, leading to many fewer expensive calls to
350 COMPUTE-APPLICABLE-METHODS.
351 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
352 CLASS argument, search for and call an appropriate optimized ctor function
354 * bug fix: WRITE always returns the correct value.
356 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
357 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
358 * bug fix: Name conflicts between symbols passed as arguments to a single
359 call to IMPORT no longer add multiple symbols with the same name to the
360 package (detectable via DO-SYMBOLS).
361 * bug fix: support building without the dlshim on darwin x86 and x86-64
363 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
365 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
366 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
368 * bug fix: linkage-table entries on PPC now no longer overflow their
369 space allocation (potentially causing crashes if they are written out
371 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
372 platforms, preventing the GC from seeing stale pointers on the control
373 stack in subsequent GCs (which would, and does, break invariants).
374 * bug fix: 32-bit unicode external formats now work on big-endian systems.
375 * bug fix: Literal characters with code points greater than about 32767
376 now work on PPC UNICODE builds.
377 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
378 high order bits are explicitly cleared out. In some contrived situations,
379 this could lead to wrong results in mixed real/complex float arithmetic.
380 * bug fix: Fix function/macro redefinition warnings when building with
381 clisp. (lp#576787, thanks to Josh Elsasser)
382 * new platform: experimental support for ppc/openbsd (thanks to Josh
384 * bug fix: Floating-point traps now work on ppc/linux.
386 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
387 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
388 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
389 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
390 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
391 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
392 SB-THREAD:GRAB-MUTEX.
393 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
394 contain additional data structures and tools for concurrent programming;
395 at the moment it contains a lock-free queue, and a lock-free mailbox
397 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
398 GET-MUTEX but takes &key rather than &optional parameters. Also added
399 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
401 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
402 SB-THREAD:WAIT-ON-SEMAPHORE.
403 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
405 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
406 conditions to defer the deadline for forever.
407 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
409 * enhancement: errors from NO-APPLICABLE-METHOD and
410 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
411 generic function call.
412 * enhancement: SB-BSD-SOCKET improvements
413 ** sockets and socket streams now have a more informative printed
414 representation based on the corresponding SOCKET-NAME and
416 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
418 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
419 CL:CLOSE when appropriate, and no longer disassociates the stream
420 from the socket if close failed. (lp#543951)
421 * improvements to the instrumenting profiler
422 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
423 ** optimization: counters no longer use locks for the overflow mode.
424 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
425 incurred an off-by-one miscount.
426 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
427 * enhancement: improved DEFMETHOD pretty-printing.
428 * enhancement: perform range reduction when arguments are too large for
429 x87's transcendentals (instead of returning 0). (lp#327192)
430 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
431 some of CL-PPCRE's macros. (lp#570079)
432 * enhancement: our machine code is slightly less hostile to valgrind on
434 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
435 to Robert Swindells and Aleksej Saushev)
436 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
437 * bug fix: a rare case of startup-time page table corruption.
438 * bug fix: a semaphore with multiple waiters and some of them unwinding due
439 to timeouts could be left in an inconsistent state.
440 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
441 * bug fix: misoptimization of multiplication by one in
442 (SB-C::FLOAT-ACCURACY 0) policies.
443 * bug fix: miscounts in SB-PROFILE.
444 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
445 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
446 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
447 up itself" (March 2010) for further details.
448 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
449 against length of the list if the element is found before the specified
450 END is reached. (thanks to Alec Berryman, lp#554385)
451 * bug fix: errors signalled during package graph modification no longer
452 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
453 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
454 :SB-DOC feature. (lp#552564)
455 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
456 * bug fix: more robust runtime executable path detection. (lp#375549)
457 * bug fix: GCD always returns positive values. (lp#413680)
458 * bug fix: Converting division to multiplication by reciprocal handles
460 * bug fix: We were too eager in eliding range reduction tests on x87.
461 The maximal magnitude is 2^63, not 2^64.
462 * bug fix: Transforms for TRUNCATE don't die when the result is completely
464 * bug fix: Maybe restore buildability on Alpha.
465 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
467 * bug fix: RANDOM-STATE can be printed readably again.
468 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
469 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
470 types) could result in type mismatches during compilation.
472 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
473 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
474 stack frame thrown from.
475 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
476 compiler optimization qualities inside dynamic extent of its body.
477 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
478 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
480 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
481 constraint propgation, allowing better compilation eg. when used to
482 access structures with WITH-SLOTS. (lp#520366)
483 * optimization: the compiler is now more aware of the type of the underlying
484 storage vector for multidimensional simple arrays resulting in better code
485 for accessing such arrays.
486 * optimization: passing NIL as the environment argument to TYPEP no longer
487 inhibits optimizing it. (lp#309788)
488 * optimization: more efficient register usage when handling single-float
489 arguments on x86-64. (thanks to Lutz Euler)
490 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
491 pre-allocated temporary vectors. (lp#496249)
492 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
493 in :INITIAL-CONTENTS. (lp#523612)
494 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
495 functions. (lp#524707)
496 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
497 WITH-SLOTS usages during compilation.
498 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
499 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
500 all x86oid platforms with :UD2-BREAKPOINTS target feature.
501 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
502 instruction (tested on x86oid linux with ud2-breakpoints).
503 * bug fix: slam.sh now works on win32.
504 * bug fix: better differences of numeric types. (lp#309124)
505 * bug fix: arrays declared intersection and union types can have their
506 upgraded element type derived. (lp#316078)
507 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
508 threads started during profiling. (lp#472499)
509 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
511 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
512 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
513 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
514 values instead of signaling an error. (lp#309093)
515 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
517 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
518 declarations (lp#497321)
519 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
520 and failed to detect circular lists (lp#452008)
521 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
523 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
524 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
525 due to it, so that handlers can run.
526 * bug fix: reparsing undefined types if they have become defined since
528 * bug fix: missing &REST type in a proclamation for a function with both
529 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
530 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
531 expanded calls (lp#542174)
532 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
533 than just at toplevel form.
535 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
536 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
537 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
538 but work on type specifiers.
539 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
540 to name a type specifier.
541 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
542 specifier is valid where "valid" basically means "would be accepted as
543 second argument of TYPEP".
544 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
545 returns the function's declared, or derived FTYPE.
546 * new feature: SB-POSIX now supports accessing the d_ino member of
547 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
548 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
549 provide for seeding a RANDOM-STATE object with user-provided data or
550 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
551 attempt to initialize the returned state from the operating system's
552 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
553 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
554 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
555 * bug fix: Fix grammar and style issues for the docstrings of
556 printer-related variables and functions. (Thanks to mon_key; launchpad
558 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
560 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
561 in a row even though a handler defered the deadline long into the
563 * bug fix: A deadline handler was run without interrupts enabled for a
564 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
565 in infinitely spinning, non-killable threads.
566 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
567 before reaching the erring stack frame.
568 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
569 real power. (launchpad bug lp#525949)
570 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
571 GENCGC platforms. (launchpad bug lp#529014)
572 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
573 (launchpad bug lp#525916)
574 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
575 (Thanks to Robert Goldman)
577 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
578 * optimization: ROUND with a single single-float or double-float argument
579 is properly inlined when possible.
580 * optimization: Slightly better code is generated for integer<->float
581 conversions and for single-float<->double-float conversions on x86-64.
582 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
583 code for 32-bit and 64-bit rotations on x86-64.
584 * bug fix: The install script changes the ownership of directories as well
585 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
586 launchpad bug lp#508485)
587 * bug fix: TRUNCATE with a single single-float or double-float argument is
588 properly inlined when possible. (launchpad bug lp#489388)
589 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
590 no longer causes a compiler error on x86 and ppc.
591 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
592 always relative to *READTABLE* rather than the passed argument.
594 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
595 * minor incompatible change: threading support is now enabled by default
597 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
599 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
600 are now caught and reported just like errors during macroexpansion.
601 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
602 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
603 * enhancement: ASDF systems can now depends on SB-QUEUE.
604 * fixes and improvements related to Unicode and external formats:
605 ** bug fix: error handling and restart usage in the ucs-2 external format
607 ** there is now an implementation of the ucs-4 external format.
608 ** the utf-16 and utf-32 external formats are supported.
609 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
610 in the environment. setenv() and unsetenv() are also provided. (reported by
611 Fare Rideau; launchpad bug lp#460455)
612 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
613 loading. This ensures sensible errors for .FASL files from other
614 implementations on case-insensitive filesystems. (reported by Willem
615 Broekema; launchpad bug lp#489417)
616 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
617 Willem Broekema; launchpad bug lp#489698).
618 * bug fix: some minor code rearrangements to reenable warning-free building
619 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
620 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
622 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
625 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
626 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
627 * improvement: support O_LARGEFILE access to files larger than 2GB on
628 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
629 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
630 definitions for methods specializing on the passed class itself.
631 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
632 definitions for methods specializing on the passed class itself, or on
634 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
635 about itself during the build (e.g. for M-? in Slime), if this flag is
636 enabled in customize-target-features.lisp. This will increase the core
637 size by about 5-6mb, though, so it's mostly interesting to SBCL
639 * new feature: various GENCGC tuning parameters have been experimentally
640 documented and exported from SB-EXT. See documentation for details.
641 * fixes and improvements related to Unicode and external formats:
642 ** the Unicode character database has been upgraded to the
643 Unicode 5.2 standard, giving names and properties to a number of new
644 characters, and providing a few extra characters with case
646 ** improvement: restarts for providing replacement input/output on coding
647 errors for fd-stream external formats.
648 ** improvement: where :<encoding> is a keyword corresponding to an
649 external format the system supports, it is now possible to specify
650 (:<encoding> :replacement <character>) as an external format which will
651 automatically substitute <character> on encoding or decoding errors for
652 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
654 ** improvement: the file streams underlying the standard streams (such as
655 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
656 which uses the replacement mechanism to handle encoding errors,
657 preventing various infinite error chains and unrecoverable I/O
659 ** minor incompatible change: the utf-8 external format now correctly
660 refuses to encode Lisp characters in the surrogate range (char-codes
661 between #xd800 and #xdfff).
662 ** fix a typo preventing conversion of strings into octet vectors
663 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
665 ** fix a bug in the octet multibyte handling of decoding errors and the
666 USE-VALUE restart. (launchpad bug lp#314939)
667 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
668 restart on fd-stream decoding errors.
669 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
670 error is near the end of file.
671 ** fix a double-error case in unibyte octet conversions, when the first
672 use of USE-VALUE is ignored.
673 ** fix bugs in handling of undefined code points in unibyte encodings.
674 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
675 streams after an UNREAD-CHAR.
676 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
677 object is allocated in a boxed region of dynamic space.
678 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
679 fork with multiple Lisp threads running is made, instead of going
680 ahead with unpredictable consequences. (reported by Leslie Polzer)
681 * bug fix: uses of slot accessors on specialized method parameters within
682 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
683 error while finalizing the class. This fix may cause classes with slot
684 accessors to be finalized later than previously. (reported by Lars Rune
685 Nøstdal; launchpad bug lp#473699)
686 * bug fix: restore buildability on the MIPS platform. (regression from
687 1.0.30.38, reported by Samium Gromoff)
688 * bug fix: inspecting closures is less likely to fail with a type error.
689 * bug fix: no timer starvation when setting the system clock back.
690 (launchpad bug lp#460283)
691 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
692 standard pprint dispatch table as specified by CLHS.
693 * bug fix: give CLISP a hint about a type declaration to enable it to build
694 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
696 * bug fix: correctly dump literal objects in defaulting forms of arglists.
697 (reported by Attila Lendvai; launchpad bug lp#310132)
698 * bug fix: distinguish in type specifiers between arrays that might be
699 complex and arrays that are definitely complex. (launchpad bug lp#309129)
700 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
701 type. (reported by Levente Mészáros; launchpad bug lp#485972)
702 * bug fix: setting the value of a symbol-macro within a method in the
703 presence of type declarations works properly again. (reported by Iban
704 Hatchondo; launchpad bug lp#485019)
706 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
707 * optimization: faster FIND and POSITION on strings of unknown element type
708 in high SPEED policies. (thanks to Karol Swietlicki)
709 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
711 * improvement: better error signalling for bogus parameter specializer names
712 in DEFMETHOD forms (reported by Pluijzer)
713 * bug fix: DELETE-FILE once again works on logical pathnames (regression
715 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
717 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
718 removes previous default initargs (reported by Lars Rune Nøstdal and
720 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
721 lambda-lists. (reported by Peter Seibel)
722 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
723 correctly when starting from an executable core without saved runtime
724 options (reported by Faré Rideau, thanks to Zach Beane)
725 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
726 an optimization note instead. (reported by Martin Cracauer)
727 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
728 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
729 new process group if it doesn't need to share stdin with the sbcl
730 process. (thanks to Leslie Polzer)
731 * bug fix: SATISFIES could be misoptimized to refer to a local function.
732 (reported by Stanislaw Halik)
734 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
735 * improvement: stack allocation is should now be possible in all nested
736 inlining cases: failure to stack allocate when equivalent code is manually
737 open coded is now considered a bug.
738 * improvements related to Unicode:
739 ** the Unicode character database has been upgraded to the
740 Unicode 5.1 standard, giving names and properties to a number of new
741 characters, and providing a few extra characters with case
743 ** the system now recognizes and produces names for Unicode Hangul
745 ** the EBCDIC-US external-format is now supported for octet operations
746 (as well as for stream operations).
747 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
748 be used to output toplevel compile-time effects into a separate .CFASL
750 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
751 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
753 * optimization: TRUNCATE on known single- and double-floats is upto 25%
755 * optimization: division of floating point numbers by constants uses
756 multiplication by reciprocal when an exact reciprocal exists.
757 * optimization: multiplication of single- and double-floats floats by
758 constant two has been optimized.
759 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
760 sufficient type information is available. (thanks to Leslie Polzer)
761 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
762 known structure objects are as efficient as defstruct generated accessors.
763 * optimization: unused vector creation can now be optimized away.
764 * improvement: ASDF systems can now depends on SB-INTROSPECT.
765 * improvement: a STYLE-WARNING is signalled when a generic function
766 clobbers an earlier FTYPE proclamation.
767 * improvement: the compiler is able to track the effective type of
768 generic function across method addition and removal even in the
769 absence of an explicit DEFGENERIC.
770 * improvement: DESCRIBE now reports on symbols naming undefined
771 but assumed or declared function as well.
772 * improvement: recompilation of systems using SB-GROVEL now works
773 (thanks to Leslie Polzer)
774 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
775 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
777 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
778 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
779 well as user defined declaration names.
780 ** VARIABLE-INFORMATION is now aware of alien variables.
781 * improvement: improved address space layout on OpenBSD (thanks to Josh
783 * improvement: pretty-printing of various Lisp forms has been improved
784 (thanks to Tobias Rittweiler)
785 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
786 unused were deleted in safe code. (reported by John Fremlin)
787 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
789 * bug fix: some out-of-line array predicates were missing (reported by
791 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
793 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
794 (thanks to Larry D'Anna)
795 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
796 as well. (reported by Josh Elsasser)
797 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
798 leading to possible attempts to delete the same file twice. See docstring
799 on DELETE-FILE for details. (reported by John Fremlin)
800 * bug fix: DELETE-FILE once again deletes the file named by the pathname
801 designator argument, rather than its truename. (reported by Luis
803 * bug fix: the low-level debugger had 32-bit assumptions and was missing
804 information about some array types. (thanks to Luis Oliveira)
805 * bug fix: moderately complex combinations of inline expansions could
806 be miscompiled if the result was declared to be dynamic extent.
807 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
808 form (+ <variable> <integer>) were miscompiled under certain
810 * bug fix: in some cases no compiler note about failure to stack allocate
811 was emitted, even if the objects were in fact heap allocated.
812 * bug fix: minor violation of "otherwise inaccessible" rule for stack
813 allocation could cause objects users might reasonably expect to
814 be heap allocated to be stack allocated.
815 * bug fix: DESCRIBE signalled an error for generic functions under
816 certain circumstances. (thanks to Leslie Polzer)
817 * bug fix: Fixed spelling of an error message.
819 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
820 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
821 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
822 of SB-THREAD:THREAD-ERROR-THREAD.
823 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
824 * new feature: docstrings for local and anonymous functions are no longer
825 discarded. (thanks to Leslie Polzer)
826 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
827 values in other threads.
828 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
829 about object allocation.
830 * optimization: division of a real float by a complex float is implemented
831 with a specialised code sequence.
832 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
833 keywords is an order of magnitude faster.
834 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
835 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
836 methods, and similarly for non-standard metaclass classes as long as there
837 are no methods additional on MAKE-INSTANCE.
838 * optimization: more efficient type-checks for FIXNUMs when the value
839 is known to be a signed word on x86 and x86-64.
840 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
841 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
843 * optimization: compiler is smarter about delegating argument type checks to
845 * optimization: several character functions are now compiled somewhat more
846 efficiently. (reported by Lynn Quam)
847 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
848 * improvement: less unsafe constant folding in floating point arithmetic,
849 especially for mixed complex/real -float operations.
850 * optimization: constant double and single floats are stored in native
851 unboxed format on x86[-64].
852 * optimization: smarter code for arithmetic operations with constant floats,
853 complex floats, or integers on x86[-64].
854 * optimization: smarter code for conjugate/multiplication of float complexes
855 and abs/negate of floats on x86-64.
856 * optimization: more efficient complex float and real float operations on
858 * improvement: complex float division is slightly more stable.
859 * improvement: DESCRIBE output has been reworked to be easier to read and
860 contains more pertinent information.
861 * improvement: failure to provide requested stack allocation compiler notes
862 provided in all cases (requested stack allocation not happening without a
863 note being issued is now considered a bug.)
864 * bug fix: SB-POSIX exports the documented types and functions
865 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
866 types. (reported by "abhi")
867 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
868 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
869 (thanks to Paul Khuong)
870 * bug fix: looping around HANDLER-CASE could silently consume stack space
871 on each iteration. (reported by "foobar")
872 * bug fix: better error signalling when calls to functions seeking elements
873 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
874 (reported by Tobias Rittweiler)
875 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
876 directory components now works as it used to. (various prolems reported by
877 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
878 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
879 (reported by Elliot Slaughter, thanks to Stas Boukarev)
880 * bug fix: bogus undefined variable warnings from fopcompiled references to
881 global variables. (thanks to Lars Rune Nøstdal)
882 * bug fix: foreign function names should now appear in backtraces on
883 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
884 * bug fix: SETF compiler macro documentation strings are not discarded
886 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
887 (thanks to Alex Plotnick)
888 * bug fix: SLEEP accepts large integer arguments, truncating them to
889 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
890 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
891 * bug fix: compiler notes for expensive slot type checks could be emitted
892 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
894 changes in sbcl-1.0.29 relative to 1.0.28:
895 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
896 https://bugs.launchpad.net/sbcl
897 Bugs can be reported directly there, or by sending email to
898 sbcl-bugs@lists.sourceforge.net
899 (no subscription required.)
900 * minor incompatible change: under weak type checking policy integer
901 types are weakened less aggressively.
902 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
903 allowed to return, which causes SBCL to quit with exit status 0. Previously
904 if the function returned with a small integer return value, that value
905 was accidentally reused as the exit status.
906 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
907 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
908 :HASH-FUNCTION argument. Refer to user manual for details.
909 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
911 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
912 microseconds since the Unix epoch on all platforms.
913 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
914 allows the compiler to safely elide boundedness checks for special
916 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
917 the symbol, prohibits both lexical and dynamic binding. This is mainly an
918 efficiency measure for threaded platforms, but also valueable in
920 * new feature: UNC pathnames are now understood by the system on Windows.
921 * optimization: the compiler uses a specialized version of FILL when the
922 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
924 * optimization: accesses to potentially non-simple arrays where element type
925 is known are 50% faster.
926 * optimization: compiler now generates faster array typechecking code.
927 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
929 * optimization: multidimensional array accesses in the absence of type
930 information regarding array rank are approximately 10% faster due to
931 open coding of ARRAY-RANK.
932 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
933 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
935 * optimization: result of call to VECTOR can now be stack allocated.
936 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
937 as long as the resulting array is one-dimensional and has a known
938 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
939 length of the list matches the known length of the vector does not
940 allocate the list as an intermediate step. Ditto for VECTOR and simple
942 * optimization: MAKE-ARRAY can now stack allocate in the presence of
943 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
944 known element type, and is known to be simple and one dimensional.
945 * improvement: SBCL now emits a compiler note where stack allocation was
946 requested but could not be provided (not in all cases, unfortunately)
947 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
948 * improvement: pretty-printing loop has been implemented properly. (thanks
949 to Tobias Rittweiler)
950 * documentation: CLOS slot typechecing policy has been documented.
951 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
952 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
953 pointer, leading to memory faults. (thanks to Bart Botta)
954 * bug fix: better floating point exception handling on x86/OpenBSD.
955 (thanks to Josh Elsasser)
956 * bug fix: exit status from QUIT when called under --script was lost
957 (reported by Hubert Kauker)
958 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
959 same implementation of FILL to initialize the array, even if a more
960 efficient one was available (reported by Stas Boukarev, thanks to
962 * bug fix: potential miscompilation of array stack allocation on x86 and
963 x86-64. (reported by Time Tossavainen)
964 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
965 result in their subforms being treated as top level forms. (reported by
967 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
968 than a machine register could leave garbage in the high bits of the
969 result register (bug 316325).
970 * bug fix: disable address space randomization Linux/x86-64 as well,
971 not just x86-64. (reported by Ken Olum)
972 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
973 generate incorrect code.
974 * bug fix: #201; type inference for CONS and ARRAY types could derive
975 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
976 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
977 could not be assigned to or bound with PROGV. (reported by Lorenz
979 * bug fix: the value of CL:- in the inspector was the previous expression
980 evaluated rather than the expression being evaluated.
981 * bug fix: constants can no longer be locally declared special.
982 * bug fix: signals delivered to threads started from foreign land (read:
983 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
984 thread by blocking all signals and resignalling.
985 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
986 from :INITFORM, if any.
988 changes in sbcl-1.0.28 relative to 1.0.27:
989 * a number of bugs in cross-compilation have been fixed, with the ultimate
990 result that building under (at least) clisp should be much more reliable.
991 * minor incompatible changes: echo-streams now propagate unread-char to the
992 underlying input stream, and no longer permit unreading more than one
994 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
995 frames, allowing for instance more reliable backtraces.
996 * improvement: the debugger REPL can now reference lexical variables
997 by name directly for code compiled with (DEBUG 3).
998 * improvement: errors from malformed declarations now have better source
999 paths associated with them. (thanks to Tobias Rittweiler)
1000 * optimization: faster local calls on x86/x86-64
1001 * bug fix: some error messages for out-of-bound array indexes confused the
1002 index and the bound. (thanks to Stas Boukarev)
1003 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1005 * bug fix: running regressions tests in shells without OSTYPE set now works.
1006 (reported by Harald Hanche-Olsen)
1007 * bug fix: more robust static space exhaustion signalling from
1008 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1009 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1010 docstring away instead of storing it under names such as (LAMBDA (X)).
1011 (reported by Leslie Polzer)
1012 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1013 (thanks to Ole Arndt for the patch)
1014 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1015 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1016 potentially-invalid effective methods in its cache.
1017 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1018 instances as well (thanks to Paul Khuong)
1019 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1020 SB-POSIX:WAITPID and their C equivalents.
1021 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1023 changes in sbcl-1.0.27 relative to 1.0.26:
1024 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1025 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1026 * improvement: the system either recovers from stack exhaustion or dies
1027 properly as opposed to leaving the user uncertain of whether the handler
1028 trampled on some random memory next to the stack or having to rely on
1029 --lose-on-corruption (which is still a good idea to use in production
1030 because stack exhaustion can happen in signal handlers which will likely
1032 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1033 1.0.25.37, reported by Harald Hanche-Olsen)
1034 * bug fix: work around signal delivery bug in darwin (regression from
1035 1.0.25.44, reported by Sidney Markowitz)
1036 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1038 changes in sbcl-1.0.26 relative to 1.0.25:
1039 * incompatible change: an interruption (be it a function passed to
1040 INTERRUPT-THREAD or a timer function) runs in an environment where
1041 interrupts can be enabled. The interruption can use
1042 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1043 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1044 potentially running out of stack. Keep in mind that in the absence
1045 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1046 acquiring a lock can enable interrupts.
1047 * incompatible change: GC-OFF and GC-ON are removed, as they were
1048 always unsafe. Use WITHOUT-GCING instead.
1049 * new feature: runtime option --disable-ldb
1050 * new feature: runtime option --lose-on-corruption to die at the
1051 slightest hint of possibly non-recoverable errors: running out of
1052 memory, stack, alien stack, binding stack, encountering a memory
1053 fault, etc. In the absence of --lose-on-corruption a warning is
1055 * enhancement: detect binding stack exhaustion
1056 * enhancement: detect alien stack exhaustion on x86/x86-64
1057 * improvement: generally more stable and reliable interrupt handling
1058 * improvement: there is a per thread interruption queue,
1059 interruptions are executed in order of arrival
1060 * improvement: a repeating timer reschedules itself when the it has
1061 finished, but expiration times are spaced equally. If an
1062 expiration time is in the past it will trigger after a short grace
1063 period that may give a chance to other things to run.
1064 * optimization: slightly faster gc on multithreaded builds
1065 * optimization: faster WITHOUT-GCING
1066 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1067 important locks so that the debugger/handler doesn't produce
1068 recursive errors or deadlock.
1069 * bug fix: real-time signals are not used anymore, so no more
1070 hanging when the system wide real-time signal queue gets full.
1071 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1073 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1074 * bug fix: fix random memory faults related to interrupts on alpha
1075 * bug fix: fix random memory faults related to interrupts on sparc
1076 * bug fix: fix deadlocks related to starting threads
1077 * bug fix: fix deadlines on locks on futex platforms
1078 * bug fix: restore errno in signal handlers
1079 * bug fix: fix deadlocks related to hash tables
1080 * bug fix: fix deadlocks in pcl
1082 changes in sbcl-1.0.25 relative to 1.0.24:
1083 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1084 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1085 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1086 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1087 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1088 better name and does not return values so stale on multiprocessor systems.
1089 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1091 * improvement: unithread builds keep track of MUTEX-VALUE.
1092 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1093 stream anymore making it thread safe to have a concurrent reader and
1094 a writer, for instance, in a pipe.
1095 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1096 arguments, making compiler-macros for SETF-functions able to inspect
1097 their constant arguments.
1098 * improvement: COMPILE-FILE reports times with millisecond accuracy
1099 (thanks to Luis Oliveira)
1100 * optimization: CHAR-CODE type derivation has been improved, making
1101 TYPEP elimination on subtypes of CHARACTER work better. (reported
1102 by Tobias Rittweiler, patch by Paul Khuong)
1103 * bug fix: setting alien structure fields of type struct by value now
1104 computes the right offset for the memory copy.
1105 * bug fix: compilation problem involving inlined calls to aliens with
1106 result type VOID. (reported by Ken Olum)
1107 * bug fix: #235a; sequential inline expasion in different policies no
1108 longer reuses the functional from the previous expansion site.
1109 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1110 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1111 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1112 cause an implied type redefinition. Regression from 1.0.21.29.
1113 * bug fix: sign-extension of small signed return values now works with C
1114 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1115 * improvements to the Windows port:
1116 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1117 Westfold, thanks to Rudi Schlatte)
1119 changes in sbcl-1.0.24 relative to 1.0.23:
1120 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1121 vector of a multidimensional SIMPLE-ARRAY.
1122 * new feature: the system now signals a continuable error if standard
1123 readtable modification is attempted. (thanks to Tobias Rittweiler)
1124 * new feature: DIRECTORY has been extended with a non-standard keyword
1125 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1126 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1127 has been robustified and documented better. (thanks to Robert Goldman)
1128 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1129 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1130 * tradeoff: constant FORMAT control strings are now compiled unless
1131 SPACE > SPEED (previously only when SPEED > SPACE.)
1132 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1134 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1136 * bug fix: lexical type declarations are now correctly reported by
1137 SB-CLTL2. (reported by Larry D'Anna)
1138 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1139 using UTF-8 as external format. (thanks to Luis Oliveira)
1140 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1141 are signalled correctly. (thanks to Stas Boukarev)
1142 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1143 designator. (thanks to Tobias Rittweiler)
1144 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1145 designator, and returns T instead of the function. (thanks to
1147 * bug fix: direct superclasses of STANDARD-CLASS and
1148 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1149 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1150 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1151 when no class with the named slot yet exists no longer causes a
1152 compile-time style-warning.
1153 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1154 in safe code. (reported by Didier Verna)
1155 * bug fix: #430; nested structure constructors can stack allocate.
1156 * bug fix: on some 64-bit platforms dynamic space size was truncated
1157 to #xffff0000 bytes. (reported by Benjamin Lambert)
1158 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1159 REPL unusable. (reported by Daniel Herring)
1160 * bug fix: return values of READ-SEQUENCE did not take :START into
1161 account on file streams, regressions since 1.0.12.22. (reported by
1162 Thomas Russ, patch by Paul Khuong)
1163 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1164 method specializer used to confuse permuation vector optimization.
1165 * bug fix: system inserted bogus implicit type declarations for local
1166 special variables in DEFMETHOD bodies.
1167 * bug fix: #354; duplicated frames in backtraces due to
1168 non-tail-call-optimized XEPs to functions with return type NIL
1170 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1171 initializes structure object slots according to DEFSTRUCT initforms,
1172 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1173 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1174 (reported by Bruno Haible and Stephen Wilson)
1175 * bug fix: #395; fill-pointer output streams used now support
1176 element-type BASE-CHAR as well.
1177 * bug fix: compiler error when attempting to derive return value of
1178 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1180 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1182 * bug fix: Mac OS X binaries should now be portable between Leopard
1185 changes in sbcl-1.0.23 relative to 1.0.22:
1186 * enhancement: when disassembling method functions, disassembly
1187 for the associated fast function is also produced.
1188 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1190 * optimization: printing with *PRINT-PRETTY* true is now more
1191 efficient as long as the object being printed doesn't require
1192 special handling by the pretty printer.
1193 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1194 now interact correctly with type declarations.
1195 * partial bug fix: PCL detects infinite recursion during wrapper
1196 validation. (thanks to Attila Lendvai)
1197 * bug fix: #426; nested function calls are inlined properly.
1198 Previously if FOO was an inline function, in calls of the form
1199 (FOO (FOO ...)) the outer call was not inlined.
1200 * bug fix: long long arguments passed in registers to alien
1201 functions on PowerPC Linux and NetBSD are now handled correctly
1202 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1204 changes in sbcl-1.0.22 relative to 1.0.21:
1205 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1206 for the shared object in the current directory, but passes the native
1207 namestring of the designated pathname to the operation system's shared
1208 object loading function as-it.
1209 * minor incompatible change: --disable-debugger toplevel option now takes
1210 effect before processing of initialization files and --eval or --load
1212 * new feature: new commandline argument: --script, which supports
1213 shebang lines. See documentation for details. (based on work by
1215 * new feature: SAVE-LISP-AND-DIE can save current values of
1216 --dynamic-space-size and --control-stack-size in the executable core,
1217 causing it to skip normal runtime option processing. See documentation
1218 for details. (thanks to Zach Beane)
1219 * enhancement: inoccous calls to EVAL or generic functions dispatching
1220 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1221 * enhancement: the system no longer resignals errors from --load and
1222 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1223 associated with the original error to be lost. (thanks to Ariel
1225 * enhancement: :DONT-SAVE keyword argument has been added to
1226 LOAD-SHARED-OBJECT for controlling interaction with
1227 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1228 the effects of an earlier LOAD-SHARED-OBJECT call.
1229 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1230 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1231 provided. (reported by Cedric St-Jean)
1232 * bug fix: circularity handling in the reader did not treat raw
1233 structure slots correctly. (reported by Cedric St-Jean)
1234 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1235 file descriptors when there were none.
1236 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1237 was broken. (reporteed by Willem Broekema)
1238 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1239 pathnames without a directory.
1240 * bug fix: COMPILE-FILE did not warn about undefined variable
1241 references at toplevel, and LOAD of the resulting fasl did
1242 not signal an error.
1243 * bug fix: functions with non-required arguments used to end up with
1244 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1245 * bug fix: redefining a function with non-required arguments didn't
1246 update the system's knowledge about its call signature properly.
1247 * bug fix: fixed #431; incompatible alien record type redefinitions
1248 are detected and handled. (reported by Neil Haven)
1249 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1250 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1252 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1253 after alien stack frames.
1254 * bug fix: strings passed to mk{s,d}temp lacked null termination
1256 changes in sbcl-1.0.21 relative to 1.0.20:
1257 * new feature: the compiler is able to track the effective type of a
1258 generic function across method addition and removal.
1259 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1260 appropriately typed structure slots without locking.
1261 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1262 information like those gathered by TIME using a programming-friendly
1264 * new feature: TIME reports time taken even if the form performs a
1265 non-local transfer of control.
1266 * enhancement: reduced conservativism on GENCGC platforms: on
1267 average 45% less pages pinned (measured from SBCL self build).
1268 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1269 mutate constant symbols or violate declaimed type of the symbol.
1270 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1271 sleeping on the semaphore in heavily contested semaphores.
1272 * bug fix: semaphores and condition variables were not interrupt
1274 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1275 owned by other threads anymore.
1276 * bug fix: FIND on lists called KEY outside the specified
1277 subsequence. (reported by budden)
1278 * bug fix: LOG doesn't use single-float intermediate results when
1279 given mixed integer and double-float arguments, leading to better
1280 precision. (reported by Bob Felts)
1281 * bug fix: LOG with base zero returned values of inconsistent type.
1283 changes in sbcl-1.0.20 relative to 1.0.19:
1284 * minor incompatible change: OPTIMIZE qualities
1285 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1286 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1287 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1288 * documentation: some slot access efficiency guidelines have been
1289 added to the user manual.
1290 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1291 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1292 as ASSOC and MEMEBER.
1293 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1294 to more efficient EQ-comparison versions more often.
1295 * optimization: enhanced derivation of DOLIST iteration variable type
1297 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1299 * optimization: runtime lookup of function definitions can be
1300 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1301 * optimization: compiler is able to derive the return type of
1302 (AREF (THE STRING X) Y) as being CHARACTER.
1303 * optimization: CLRHASH on empty hash-tables no longer does pointless
1304 work. (thanks to Alec Berryman)
1305 * optimization: REPLACE deftransforms don't punt when :START1 or
1307 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1308 no longer emits a code deletion note. (reported by Andrew
1310 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1311 functions with an odd number of &OPTIONAL arguments, a &REST
1312 argument, and one or more &KEY arguments at the call site.
1313 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1314 arguments appeared at call sites as well.
1315 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1316 READ-LINE &co can no longer read from them afterwards. (reported
1318 * bug fix: fixed #427: unused local aliens no longer cause compiler
1319 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1321 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1322 alien-stack leakage. (reported by Andy Hefner)
1323 * bug fix: PROGV signals an error when an attempt to violate declared
1324 type of a variable or bind a constant is made.
1325 * bug fix: SET signals an error when an attempt to violate declared
1326 type of a variable is made.
1327 * bug fix: restart computation during the execution of a restart
1328 test function no longer causes infinite recursion. (reported by
1330 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1331 signals an error. (thanks to Pierre Mai)
1332 * bug fix: EXPORT left symbol unexported in conflict situations.
1333 (thanks to Michael Weber)
1334 * bug fix: correctly handle name conflicts involving CL:NIL.
1335 (thanks to Michael Weber)
1336 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1337 conflicts arising from USEing package with conflicting symbols
1338 correctly. (thanks to Michael Weber)
1340 changes in sbcl-1.0.19 relative to 1.0.18:
1341 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1342 warnings that go otherwise unhandled will be muffled if they are
1343 of the type that's the value of this variable.
1344 * optimization: stack allocation is slightly more efficient on x86
1346 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1347 where a raw slot always is initialized using the initform whose
1348 type is not know sufficiently well a compile-time are now compiled
1349 correctly. (reported by John Morrison)
1350 * bug fix: compiler no longer makes erronous assumptions in the
1351 presence of non-foldable SATISFIES types.
1352 * bug fix: stack analysis missed cleanups of dynamic-extent
1353 arguments in non-let-converted calls to local functions.
1354 * improvements to the Windows port:
1355 ** adjusted address spaces for building on both Win32 and
1356 Win64. (thanks for John Connors)
1357 * fixed some bugs revealed by Paul Dietz' test suite:
1358 ** interval arithmetic during type derivation used inexact integer
1359 to single-float coercions.
1360 ** arithmetic operations involving large integers and single
1361 floats give the same results in compiled and interpreted code.
1362 ** deriving the result type of COERCE no longer signals an error
1363 if the derived type of the second argument is a MEMBER type
1364 containing invalid type specifiers.
1365 ** ADJOIN with constant NIL as second argument works correctly.
1366 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1368 changes in sbcl-1.0.18 relative to 1.0.17:
1369 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1370 profiles only the current thread.
1371 * minor incompatible change: changes to SYMBOL-VALUE of constants
1372 defined with DEFCONSTANT now signal an error.
1373 * enhancement: SB-SPROF now has support for wallclock profiling,
1374 and is also able to profile specific threads. REPORT output
1375 has also additional sorting options.
1376 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1378 * optimization: structure allocation has been improved
1379 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1380 ** out of line constructors are ~10% faster.
1381 ** inline constructors are ~15% faster.
1382 ** inline constructors are capable of dynamic extent allocation
1383 (generally on x86 and x86-64, in some cases on other platforms
1385 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1387 * optimization: file compiler is now able to coalesce non-circular
1388 lists, non-base strings, and bit-vectors. Additionally, constants
1389 are never referenced through SYMBOL-VALUE at runtime.
1390 * optimization: code defining methods on PRINT-OBJECT (and other
1391 generic functions in the COMMON-LISP package) now loads faster.
1392 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1394 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1395 fasl is now deleted. (reported by Attila Lendvai)
1396 * bug fix: READ-LINE always returned NIL for the last line in files.
1397 (reported by Yoshinori Tahara)
1398 * bug fix: more accurate disassembly annotations of foreign function
1399 calls. (thanks to Andy Hefner)
1400 * bug fix: trimming non-simple strings and non-string string
1401 designators when the there is nothing to trim works properly.
1402 (thanks to James Knight)
1403 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1404 (thanks to Travis Cross)
1405 * fixed some bugs revealed by Paul Dietz' test suite:
1406 ** NIL is a valid function name (regression at 1.0.13.38)
1407 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1408 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1409 fill pointers properly (regression at 1.0.12.23)
1410 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1411 displacement indices properly (regression at 1.0.12.23)
1413 changes in sbcl-1.0.17 relative to 1.0.16:
1414 * temporary regression: user code can no longer allocate closure
1415 variable storage on stack, due to bug 419 without explicitly
1416 requesting it. Please consult sbcl-devel for advice if you need to
1417 use this feature in the meanwhile.
1418 * new feature: runtime argument --control-stack-size can be used to
1419 adjust thread default control stack size.
1420 * enhancement: improved TIME output
1421 ** all times are reported using the measured accuracy (milliseconds
1422 for real and GC times, microseconds for everything else.)
1423 ** processor cycle counts on x86 and x86-64.
1424 ** interpreted forms are counted for both evaluator modes.
1425 ** number of lambdas converted by the compiler is reported.
1426 ** CPU percentage report (computed from real and total run time.)
1427 ** more comprehensive run time reporting, using a condenced format
1428 ** interperted form, lambda, and page fault counts are omitted
1430 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1432 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1433 * optimization: two argument forms of LAST are upto ~10% faster
1434 in normal SPEED policies.
1435 * optimization: NCONC no longer needs to heap cons its &REST list
1436 in normal SPEED policies.
1437 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1438 to Sidney Markowitz)
1439 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1440 regression since 1.0.9.1. (thanks to Eric Marsden)
1441 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1442 since 1.0.15.36. (thanks to Paul Khuong)
1443 * bug fix: LAST when always returned the whole list when given a bignum
1444 as the second argument.
1445 * bug fix: dynamic extent allocation of nested lists and vectors
1446 could leak to otherwise accessible parts.
1447 * bug fix: invalid optimization of heap-allocated alien variable
1449 * bug fix: fasl header checking is less vulnerable to different
1450 platform word lengths.
1451 * bug fix: more correct assembler syntax for GNU binutils
1452 2.18.50.0.4 support. (thanks to Marijn Schouten)
1453 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1455 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1456 declarations) successfully. (reported by Attila Lendvai)
1458 changes in sbcl-1.0.16 relative to 1.0.15:
1459 * minor incompatible change: revert the changes to sb-posix's error
1460 signaling added in 1.0.14.
1461 * minor incompatible change: change PROBE-FILE back to returning
1462 NIL whenever we can't get a truename, as was the case before 1.0.14.
1463 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1464 inherits from ERROR instead of just CONDITION.
1465 * new feature: SB-INTROSPECT can provide source locations for instances
1466 as well. (thanks to Tobias Rittweiler)
1467 * optimization: binding special variables now generates smaller code
1468 on threaded platforms.
1469 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1470 and cases where no :TEST is given but the compiler can infer that
1471 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1472 * optimization: better LOGNOT on fixnums.
1473 * optimization: modular arithmetic for a particular requested width
1474 is implemented using a tagged representation unless a better
1475 representation is available.
1476 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1477 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1478 for wellformedness and returns a specialized vector. (reported by
1479 Francois-Rene Rideau)
1480 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1481 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1482 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1483 unscheduling timer at the same time as another timer fires.
1484 * bug fix: don't reschedule timers for dead threads.
1485 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1486 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1487 bogus errors if select() was interrupted.
1488 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1490 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1491 * enhancement: cleaner backtraces for interactive interrupts, as
1492 well as other cases where the interesting frames used to be
1493 obscured by interrupt handling frames.
1494 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1495 now supported, and tracing a whole package using (TRACE "FOO") now
1496 traces SETF-functions as well.
1497 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1498 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1499 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1500 * unreadably printed representation of hash-tables now includes
1502 * bug fix: partially fixed #188: type propagation from assignments
1503 is now more efficient.
1504 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1505 'DOUBLE-FLOAT) are not flushable.
1506 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1507 full address of the object, and none of the tag bits.
1508 * bug fix: readably printing hash-tables now respects other printer
1509 control variables. (reported by Cedric St-Jean)
1510 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1511 keyword with MAKE-HASH-TABLE.
1512 * bug fix: export SB-POSIX:MKSTEMP.
1513 * bug fix: SORT was not interrupt safe.
1514 * bug fix: XREF accounts for the last node of each basic-block as
1516 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1517 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1518 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1519 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1520 create obsolete instances in the case of redefinition or
1521 obsoletion of a superclass. (thanks to Andy Hefner)
1522 * bug fix: Support for the Alpha architecture has been revived; it had
1523 suffered somewhat from lack of maintenance since sbcl-1.0.
1524 * improvements to the Windows port:
1525 ** The system detects the codepage to use at startup, instead of
1526 using the value from the saved core. (thanks to Kei Suzuki)
1528 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1529 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1530 (see documentation for details.)
1531 * revived support for OpenBSD (contributed by Josh Elsasser)
1532 * partially fixed bug #108: ROOM no longer suffers from occasional
1533 (AVER (SAP= CURRENT END)) failures.
1534 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1535 bodies no longer cause a WARNING to be signalled. (reported by
1537 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1538 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1539 the bug in TRUNCATE.) (reported by Michael Weber)
1540 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1541 no samples. (reported by Andy Hefner)
1542 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1543 no longer appear as (NIL ...) frames in backtraces.
1544 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1545 is now actually exported from SB-EXT as documented. (reported by
1547 * bug fix: sb-aclrepl now correctly understands how to inspect
1548 single-floats on 64-bit platforms where single-floats are not boxed.
1549 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1550 yet been finalized. (reported by Levente Meszaros)
1551 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1552 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1553 SBCL-specific optimize qualities.
1555 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1556 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1557 an executable in the search path, and does so in the child
1558 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1559 been removed; it can be found in the CVS history, for somebody who
1560 needs that search behavior (see the manual).
1561 * minor incompatible change: compiler policy re. weakening type
1562 checks has changed: now type checks are weakened only if SAFETY < 2
1564 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1565 unparsing of directory pathnames as files. Analogously,
1566 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1567 filename to parse into a directory pathname.
1568 * enhancement: implicit generic function creation now signals a
1569 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1570 users can bind handlers for and muffle around calls to LOAD.
1571 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1572 to be used (using the default stream external format), and allows
1573 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1574 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1575 strings and vectors whose element-type or simplicity is not fully
1576 known at compile-time.
1577 * optimization: STRING-TRIM and related functions no longer allocate
1578 a new string when no trimming needs to be performed. These functions
1579 are also faster than before when the input string has been declared
1581 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1582 * optimization: READ-LINE is significantly faster for files containing
1584 * optimization: non-open coded uses of character comparison operators
1585 (e.g. char=) no longer cons when called with more than one parameter
1586 on platforms supporting dynamic-extent allocation.
1587 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1588 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1589 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1591 * bug fix: some sequence functions elided bounds checking when
1593 * bug fix: too liberal weakening of union-type checks when SPEED >
1595 * bug fix: more bogus fixnum declarations in ROOM implementation
1598 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1599 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1600 :SYNCHRONIZED argument, which makes the hash-table safe for
1601 concurrent accesses (but not iteration.) See also:
1602 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1603 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1604 * optimization: CONCATENATE on strings is an order of magnitude faster
1605 in code compiled with (> SPEED SPACE).
1606 * optimization: SUBSEQ is ~50% faster on lists.
1607 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1608 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1609 END is smaller then START.
1610 * bug fix: SB-PROFILE will no longer report extra consing for nested
1611 calls to profiled functions.
1612 * bug fix: ROOM implementation had bogus fixnum declarations which
1613 could cause type-errors when calling ROOM on large images.
1614 * bug fix: if file compilation is aborted, the partial fasl is now
1615 deleted, and COMPILE-FILE returns NIL as the primary value.
1616 * bug fix: number of thread safety issues relating to SBCL's internal
1617 hash-table usage have been fixed.
1618 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1619 be returned from its body when the values were being returned
1620 using unknown-values return convection and the W-P-O was wrapped
1621 inside an UNWIND-PROTECT.
1622 * bug fix: sb-posix should now compile again under Windows, enabling
1623 slime to work again.
1625 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1626 * incompatible change: hash-table accessor functions are no longer
1627 automatically protected by locks. Concurrent accesses on the same hash-table
1628 from multiple threads can give inconsistent results or even corrupt the
1629 hash-table completely. Multi-threaded applications should do their own
1630 locking at the correct granularity. In the current implementation it is
1631 still safe to have multiple readers access the same table, but it's not
1632 guaranteed that this property will be maintained in future releases.
1633 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1634 and will signal an error at runtime.
1635 * enhancement: SB-THREAD package now exports a semaphore interface.
1636 * enhancement: CONS can now stack-allocate on x86 and
1637 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1639 * enhancement: nested lists can now be stack allocated on
1640 platforms providing stack allocation support.
1641 * enhancement: dynamic-extent support has been extended to support
1642 cases where there are multiple possible sources for the stack
1644 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1645 if the mutex is uncontested on Linux.
1646 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1647 as specified by the CLHS. (thanks to Tobias Rittweiler)
1648 * bug fix: NaN comparison now works on x86-64.
1649 * bug fix: CLOSE :ABORT T on a stream with pending output now
1651 * bug fix: instances of non-standard metaclasses using standard
1652 instance structure protocol sometimes missed the slot type checks
1654 * bug fix: known functions can be inlined in high-debug code.
1656 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1657 * minor incompatible change: the MSI installer on Windows no longer
1658 associates .lisp and .fasl files with the installed SBCL.
1659 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1660 on Windows. (thanks to Luis Oliviera)
1661 * new feature: SB-CLTL2 contrib module now implements
1662 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1663 * optimization: scavenging weak pointers is now more efficient,
1664 requiring O(1) instead of O(N) per weak pointer to identify
1665 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1666 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1667 method bodies using constant slot-names when the first argument is
1668 a specializer parameter for the method.
1669 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1670 names, when the class of the instance is a direct instance
1671 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1672 as slow as the constant slot-name case.)
1673 * optimization: member type construction is now O(N) instead
1675 * optimization: UNION and NUNION are now O(N+M) for large
1676 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1678 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1679 now more readable in environments like Slime which display it.
1680 (thanks to Tobias C. Rittweiler)
1681 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1682 was able to infer the correct argument type for the object on which
1683 the CAS operation was being performed.
1684 * bug fix: copy propagation interfered with parallel assignment
1685 semantics in local calls. (reported by Paul Khuong)
1686 * bug fix: the signed modular fixnum shift compiled to wrong code on
1687 x86 and x86-64. (spotted by a slight modification to some of
1690 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1691 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1692 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1693 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1695 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1696 and generic function now print the object identity for anonymous
1697 instances. (thanks to Attila Lendvai)
1698 * enhancement: as an extension to MOP, SBCL now supports SETF of
1699 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1700 (thanks to Attila Lendvai)
1701 * enhancement: sb-cover has an alternate annotation mode which puts
1702 the form annotations at the car of the form, instead of annotating
1703 it completely. The benefit of this mode is that it shows better
1704 which forms were instrumented by the compiler.
1705 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1706 by printer control variables. (reported by Dan Corkill)
1707 * bug fix: system leaked memory when delayed output was performed by
1708 the OS in smaller chunks then expected. (thanks to David Smith)
1709 * bug fix: system leaked memory when file streams were not closed
1711 * bug fix: large objects written to slow streams that were modified
1712 after the write could end up with the modified state written to
1713 the underlying file descriptor.
1714 * bug fix: multiple threads operating in parallel on the same stream
1715 could cause buffer-overflows.
1716 * bug fix: source location information is stored correctly
1717 (broken since 1.0.6). This bug would generally show up as the
1718 Slime debugger highlighting the wrong form when the sldb-show-source
1720 * bug fix: Branch forms are again annotated as branches in the sb-cover
1722 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1723 on x86-64. (reported by Gregory Vanuxem)
1724 * bug fix: EQUALP could return wrong results for structures with raw
1725 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1726 word). (reported by Vjacheslav Fyodorov)
1727 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1730 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1731 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1732 atomic compare-and-swap operations on threaded platforms.
1733 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1734 allows assigning a global minimum value to optimization qualities
1735 (overriding proclamations and declarations).
1736 * enhancement: closed over variables can be stack-allocated on x86
1738 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1740 * optimization: slot definition lookup is now O(1). This speeds up
1741 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1742 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1743 * optimization: ASSOC and MEMBER can now be open-coded for all
1744 combinations of keyword arguments when second argument is constant
1745 and SPEED >= SPACE. In other cases a specialized version is
1747 * bug fix: using obsoleted structure instances with TYPEP and
1748 generic functions now signals a sensible error.
1749 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1750 (reported by Kristoffer Kvello)
1751 * bug fix: backtrace construction is now more careful when making
1752 lisp-objects from pointers on the stack, to avoid creating bogus
1753 objects that can be seen by the GC.
1754 * bug fix: defaulting of values in contexts expecting more than 7
1755 variables now works on x86-64. (reported by Christopher Laux)
1756 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1758 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1759 as the property-list of a symbol.
1760 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1761 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1762 situations requested, are once again file-compileable. (reported
1765 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1766 * MOP improvement: support for user-defined subclasses of
1767 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1768 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1769 the expansion of DEFMETHOD, is responsible for generating a form
1770 which creates a list of specializers when evaluated. Additional
1771 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1772 debugging and introspective support.
1773 * minor incompatible change: the (unsupported) spinlock interface
1774 has changed: free spinlock now has the value NIL, and a held spinlock
1775 has the owning thread as its value.
1776 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1777 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1779 * enhancement: name of a socket-stream is now "a socket" instead of
1780 "a constant string".
1781 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1782 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1783 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1784 for generic functions. (Thanks to Tobias C. Rittweiler)
1785 * optimization: bignum printing speed has been improved by 20-40%
1786 (depending on the bignum size.)
1787 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1789 * bug fix: the cache used by the CLOS to store precomputed effective
1790 methods, slot offsets, and constant return values is now thread and
1792 * bug fix: generic function dispatch function updating is now thread
1793 and interrupt safe (in the sense that the known issues have been
1795 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1796 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1797 * bug fix: asdf systems with dependencies to the SB-POSIX or
1798 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1799 * bug fix: interrupt safety of applicable method computation has been
1802 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1803 * new contrib: sb-cover, an experimental code coverage tool, is included
1804 as a contrib module.
1805 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1806 significantly faster.
1807 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1808 produce more efficient code on x86-64 if the compiler can determine
1809 that (+ INDEX <constant>) does not require a bounds check and FOO
1810 has an element type at least 8 bits wide.
1811 * enhancement: a new, experimental synchronous timeout facility is
1812 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1813 * enhancement: when a symbol name conflict error arises, the
1814 conflicting symbols are always printed with a package prefix.
1815 (thanks to Kevin Reid)
1816 * enhancement: stepping is now once again supported on the SPARC and
1817 MIPS platforms. (It is also now more likely to work on CheneyGC
1819 * enhancement: sb-sprof can now also track and report accurate call
1821 * bug fixes: the treatment of non-standard subclasses of
1822 SB-MOP:SPECIALIZER is more correct.
1823 * incompatible change: PURIFY no longer copies the data from the
1824 dynamic space into the static and read-only spaces on platforms
1825 that use the generational garbage collector
1826 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1828 * bug fix: GC race condition occasionally resulting in crashes with
1829 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1831 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1833 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1834 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1835 * bug fix: an asynchronous interrupt could previously leave the
1836 system running with GC inhibited.
1837 * bug fix: a DECLARE form evaluated at top-level now causes an error
1838 rather than silently (or verbosely) returning NIL.
1839 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1840 result in a error being signalled due to source form lookup errors.
1841 (reported by Peter Graves)
1843 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1844 * incompatible change: removed writer methods for host-ent-name,
1845 host-ent-addresses -- changing the values did not update the DNS
1847 * minor incompatible change: changed experimental JOIN-THREAD interface
1848 * documentation: the manual now lists reader and writer methods
1849 in class slot documentation sections. (thanks to Richard M Kreuter)
1850 * documentation: unwinding from asyncronous events has been
1851 documented as unsafe.
1852 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1853 in multithreaded application code.
1854 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1855 platforms. (thanks to James Anderson for the optimization hint)
1856 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1858 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1859 variants no longer cons.
1860 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1861 their NOT- variants no longer cons.
1862 * optimization: EQUAL hash tables no longer use SXHASH for objects
1863 of all data types, but instead use an EQL hash for types for which
1864 EQUAL is the same as EQL.
1865 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1866 are significantly faster.
1867 * optimization: new STRING-OUTPUT-STREAM implementation is much
1868 faster for large outputs and conses 30% less on average.
1869 * enhancement: XREF information is now collected for references made
1870 to global variables using SYMBOL-VALUE and a constant argument.
1871 * enhancement: SIGINT now causes a specific condition
1872 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1873 * bug fix: FILE-POSITION used to signal an error in some cases where
1874 ANSI requires it to return NIL.
1875 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1876 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1877 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1879 * bug fix: bad type declaration in the CLOS implementation has
1880 been fixed. (reported by James Anderson)
1881 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1882 (thanks to Lutz Euler)
1883 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1884 required by the CLHS. (reported by Samium Gromoff)
1885 * bug fix: dead unbound variable references now signal an error.
1886 (reported by Marco Monteiro)
1887 * bug fix: / with an unused value was being deleted in safe code.
1888 (thanks to Marco Monteiro and Kevin Reid)
1889 * bug fix: number of characters that can be written onto a single
1890 line in a file is unlimited.
1891 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1892 been fixed by inhibiting interrupts for when GC is disabled.
1893 * bug fix: some interrupt safety issues with GETHASH, (SETF
1894 GETHASH), CLRHASH and REMHASH have been fixed.
1895 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1896 specifier no longer causes infinite recursion.
1897 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1898 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1899 * bug fix: an &environment argument with the correct variable information
1900 is passed to macros that are expanded during byte compilation.
1901 (reported by Samium Gromoff)
1902 * bug fix: a logic error was causing the hash function for bignums to
1903 have excessive amounts of collisions. (reported by Faré Rideau)
1904 * bug fix: modifying the contents of an array could change the return
1905 value of SXHASH on that array, which is only allowed for strings
1906 and bit vectors. (bug introduced in 0.9.16)
1907 * improvement: the x86-64/darwin port now passes all tests (except
1908 for the debugger tests) but should still be considered
1909 experimental until this is fixed.
1910 * improvement: a style-warning is signaled for CASE (etc) clauses with
1911 duplicate keys. (thanks to Kevin Reid)
1912 * improvement: macos/x86 and macos/x86-64 now use mach exception
1913 handlers for dealing with illegal instructions (for trapping and
1914 error handling) and memory protection violations (for GC).
1916 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1917 * new platform: experimental support for x86-64/darwin (MacOS).
1918 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1919 and getnameinfo sockets functions are used instead of gethostbyaddr
1920 and gethostbyname, on platforms where the newer functions are available.
1921 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1923 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1924 don't print the startup banner, but behave as if --noinform was passed
1925 as a command line argument. (thanks to Kevin Reid)
1926 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1927 * optimization: code using alien values with undeclared types is much faster.
1928 * optimization: the compiler is now able to open code SEARCH in more cases.
1929 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1930 * bug fix: using standardized COMMON-LISP special variables as loop
1931 variables no longer signals bogus package lock violations. (reported
1933 * bug fix: declaring local loop variables to be of a range-limited type
1934 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1935 (reported by Andras Simon)
1936 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1937 bugs remain on x86-64.)
1938 * bug fix: the #= and ## reader macros now interact reasonably with
1939 funcallable instances.
1940 * bug fix: type-checks for function arguments were compiled using the
1941 compiler policy settings of the wrong lexical environment (in 1.0.2
1943 * bug fix: SHADOW accepts characters as string designators, as required
1944 by the spec (thanks to Eric Marsden)
1945 * bug fix: fixed GC safety issues when foreign functions are called with
1946 non-base strings as arguments
1947 * bug fix: more consistent error output for fatal-compiler-warnings, like
1949 * bug fix: functions with proper names were showing up as NIL in
1950 backtraces (reported by Edi Weitz, regression in 1.0.2)
1952 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1953 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1954 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1955 produce more efficient code on the x86 if the compiler can determine
1956 that (+ INDEX <constant>) does not require a bounds check and FOO
1957 has an element type at least 8 bits wide.
1958 * bug fix: references to undefined variables are handled the same way
1959 in toplevel forms as in the normal compiler
1960 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1962 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1963 (thanks to Jon Buller)
1964 * improvement: faster compilation times for complex functions
1965 * improvement: added readlink support to SB-POSIX (thanks to Richard
1968 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1969 * improvement: experimental support for mach exception handling on
1970 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1972 * improvement: support for GBK external format.
1973 (thanks to Chun Tian (binghe))
1974 * improvement: the debugger now displays variables that have been closed
1975 over, in code compiled with (DEBUG 2) or higher
1976 * improvement: support for executable cores on NetBSD (thanks to
1978 * new feature: added a RESTART-FRAME debugger command
1979 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1980 be used to provide an implementation for FILE-POSITION on Gray streams
1981 (thanks to Eric Marsden)
1982 * new feature: add syslog, openlog and closelog support to SB-POSIX
1983 (thanks to Richard Kreuter)
1984 * optimization: the function call overhead in code compiled with
1985 a high DEBUG optimization setting is significantly
1986 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1987 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1988 (thanks to Tony Martinez)
1989 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1990 evaluated once (reported by Kevin Reid)
1991 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1992 works again (thanks to Kilian Sprotte)
1993 * bug fix: an error is signaled for tagbodies with duplicate tags
1994 (thanks to Stephen Wilson)
1995 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1996 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1997 stack frames from alien callbacks.
1998 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1999 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2000 65k pages (thanks to David Woodhouse)
2001 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2003 changes in sbcl-1.0.1 relative to sbcl-1.0:
2004 * new platform: FreeBSD/x86-64, including support for threading.
2005 * new feature: the compiler stores cross-referencing information
2006 about function calls (who-calls), macroexpansion (who-macroexpands)
2007 and special variables (who-binds, who-sets, who-references) for code
2008 compiled with (< SPACE 3). This information is available through the
2009 sb-introspect contrib.
2010 * new feature: users may subclass SEQUENCE, and have instances of
2011 these classes interoperate with standard Common Lisp functions if
2012 a number of methods are defined. (This feature is experimental
2013 and the interface subject to change based on feedback from SBCL
2014 users and the general community)
2015 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2016 x86/x86-64, rather than the previous fixed depth of 8
2017 * improvement: another pthread back-end of mutex "pthread-futex".
2018 * bug fix: non-ascii command-line arguments are processed correctly
2019 (thanks to Yaroslav Kavenchuk)
2020 * bug fix: non-required arguments were not passed correctly when a method
2021 defined using DEFMETHOD was called from a mop-generated method using
2022 CALL-NEXT-METHOD (reported by Pascal Costanza)
2023 * bug fix: recursion is now permitted in accessors through
2024 SLOT-UNBOUND. (reported by Pascal Costanza)
2025 * bug fix: an error was signaled at startup if the HOME environment
2026 variable was defined, but had an empty value (reported by Peter Van Eynde)
2027 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2028 signal a PROGRAM-ERROR, not a BUG.
2029 * bug fix: SB-POSIX:READDIR works when built with large file support.
2030 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2032 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2033 for better automatic indentation support. (thanks to Matt Pillsbury)
2034 * optimization: loading generic functions no longer takes O(n^2) time,
2035 proportional to the amount of methods in the generic function
2036 (reported by Todd Sabin and Jeremy Brown)
2037 * optimization: the FIND and POSITION family of sequence functions
2038 are significantly faster on arrays whose element types have been
2040 * improvements to the Windows port:
2041 ** Intermittent heap corruption problems have been fixed. (thanks
2042 to Alastair Bridgewater)
2043 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2045 ** Lisp is able to unwind foreign exception frames from alien
2046 callbacks. (thanks to Alastair Bridgewater)
2048 changes in sbcl-1.0 relative to sbcl-0.9.18:
2049 * improvement: experimental support for threading on FreeBSD/x86.
2050 (thanks to NIIMI Satoshi)
2051 * improvement: runtime option --dynamic-space-size can be used
2052 to set the size of the dynamic space reserved on startup.
2053 * improvement: floating point modes in effect are now saved in
2054 core, and restored on startup.
2055 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2056 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2057 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2058 threads are not running after *SAVE-HOOKS* have run.
2059 * improvement: writes to CLOS instance slots are type-checked in code
2060 compiled with (SAFETY 3)
2061 * improvement: floating-point exception handling on FreeBSD (thanks to
2063 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2064 (thanks to Zach Beane)
2065 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2067 * improvement: added support for the Shift-JIS external format.
2068 (contributed by NIIMI Satoshi)
2069 * improvement: callbacks are supported on Linux/PPC. (thanks to
2071 * bug fix: compiler bug triggered by a (non-standard) VALUES
2072 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2073 * bug fix: file compiler no longer confuses validated and already
2074 dumped structurres. (reported by Kaersten Poeck)
2075 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2076 fill-pointer signals a type-error as required. (thanks to
2078 * bug fix: disassemly of funcallable instances works.
2079 * bug fix: single stepping on PPC.
2080 * bug fix: fix thread-safety problems in the type system (generally
2081 manifesting as nonsensical errors like "STRING is a bad type specifier
2082 for sequences" or "The value 1 is not of type FIXNUM")
2083 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2084 (reported by Josip Gracin)
2085 * bug fix: an error is signaled for attempts to displace arrays with
2086 incompatible element types (thanks to Mario Mommer)
2087 * bug fix: more correct handling of wide characters in debug info
2088 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2089 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2090 and don't cause extra consing
2091 * optimization: MAP and MAP-INTO are significantly faster on vectors
2092 whose elements types have been declared.
2093 * Improvements to SB-SPROF:
2094 ** Support for allocation profiling
2095 ** Reduced profiling overhead, especially for long profiling runs
2096 * Improvements to the Windows port:
2097 ** floating point exceptions are now reported correctly.
2098 ** stack exhaustion detection works partially.
2099 ** more accurate GET-INTERNAL-REAL-TIME.
2100 ** better RUN-PROGRAM behaviour in case of errors in the child
2102 ** PROBE-FILE now simplifies pathnames correctly.
2103 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2104 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2105 1st 1970 (although time timezone data will be unreliable).
2106 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2108 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2109 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2110 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2112 * bug fix: two potential GC deadlocks affecting threaded builds.
2113 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2114 returns T (reported by Anton Kazennikov)
2115 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2116 with non-variable places
2117 * bug fix: remove a race condition in the setting of
2118 funcallable-instance functions, this should make threaded CLOS
2119 code more stable against memory faults.
2120 * bug fix: corruption of specials when unbinding is interrupted by an
2121 asynchronous unwind (reported by Hannu Koivisto)
2122 * improvement: the debugger will now also display local variables that
2123 are only used once, for code compiled with a DEBUG optimization quality
2126 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2127 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2128 * incompatible change: External-format support for FFI calls. The
2129 SB-ALIEN:C-STRING no longer implies an ASCII
2130 external-format. Instead the string is subject to external-format
2131 conversion. Additionally return values of type SB-ALIEN:C-STRING
2132 are by default of type (SIMPLE-ARRAY CHARACTER), not
2133 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2134 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2135 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2136 * incompatible change: SB-EXT package no longer contains the
2137 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2138 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2140 * incompatible change: the single-stepper is no longer available
2141 on Alpha, Mips and Sparc platforms.
2142 * minor incompatible change: the direct superclasses of
2143 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2144 not (STANDARD-OBJECT FUNCTION). This makes the
2145 class-precedence-lists of GENERIC-FUNCTION and
2146 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2148 * minor incompatible change: the default stream external format on
2149 non-unicode SBCL is no longer detected from the locale, but is always
2151 * new feature: Add a version of evaluator that uses an interpreter instead
2152 of the compiler. EVAL still uses the compiler by default, to switch it
2153 to use the interpreter, set the value of the variable
2154 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2155 * minor incompatible change: the single-stepper REPL has been merged
2156 with the normal debugger (see the "Stepping" heading of the debugger help
2157 for more details). The debugger command STEP will no longer switch
2158 to the single-stepper REPL.
2159 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2160 for a type now works.
2161 * bug fix: loading of default sysinit file works. (thanks to Leonid
2163 * bug fix: better detection of circularities in the file-compiler.
2164 (reported by Marco Monteiro)
2165 * bug fix: the CL pathname functions now work with files that have
2166 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2167 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2168 systems with Unix98 pty semantics.
2169 * bug fix: ASDF-INSTALL will now work with bsd tar.
2170 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2172 * bug fix: timers expiring in dead threads no longer cause a
2173 type-error (reported by Paul "Nonny Mouse").
2174 * bug fix: thanks to more lightweight single-stepper instrumentation,
2175 code compiled with (DEBUG 3) will compile and execute significantly faster,
2176 and will have more accurate type-inferencing than before
2177 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2178 whose bindings are modified
2179 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2180 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2181 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2182 CL:SOFTWARE-VERSION with proper version
2184 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2185 * feature: implemented the READER-METHOD-CLASS and
2186 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2187 as specified by AMOP.
2188 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2190 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2191 (thanks to Lutz Euler)
2192 * optimization: hashing of general arrays and vectors has been
2193 improved. (reported by Any Fingerhut)
2194 * enhancement: SB-INTROSPECT is now able to find definitions of
2195 profiled functions. (thanks to Troels Henriksen)
2196 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2197 as well, allowing compiler-macros for SETF-functions to expand.
2198 * enhancement: step-instrumentation no longer wraps known
2199 single-value functions with multiple-value context, allowing
2200 better type inference.
2201 * fixed bug #337: use of MAKE-METHOD in method combination now works
2202 even in the presence of user-defined method classes. (reported by
2203 Bruno Haible and Pascal Costanza)
2204 * fixed bug #339(c): if there are applicable methods not part of any
2205 long-form method-combination group, call INVALID-METHOD-ERROR.
2206 (reported by Bruno Haible)
2207 * fixed bug #361: the :FUNCTION initarg in the protocol for
2208 initialization of methods can now be used to override
2209 internally-produced optimized functions. (reported by Bruno
2211 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2212 system-provided lambda expression no longer cause warnings about
2213 unbound #:|pv-table| symbols.
2214 * bug fix: improved the handling of type declarations and the
2215 detection of violations for keyword arguments with non-constant
2217 * bug fix: potentially erronous calls to PATHNAME and
2218 MERGE-PATHNAMES were being flushed in some cases.
2219 (reported by Richard Kreuter)
2220 * bug fix: compiled calls to TYPEP were mishandling obsolete
2221 instances. (reported by James Bielman and Attila Lendvai)
2222 * bug fix: format strings with ~> without matching ~< no longer
2223 trigger an AVER, but signal an understandable error instead.
2224 (reported by Antonio Martinez)
2225 * bug fix: specifying an output-file without a pathname-type for
2226 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2227 of input-file instead of "fasl". (reported by Robert Dodier)
2228 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2229 (reported by James Y Knight).
2230 * bug fix: compiler-macros-function did not consider the environment
2231 argument for shadowing by local functions.
2232 * bug fix: compiler-macros expansion was inhibited by local INLINE
2234 * bug fix: inline expansions of known functions were subject to
2235 step-instrumentation in high debug policies, leading to problems
2236 with type-inference.
2237 * bug fix: compiler failed to differentiate between different CONS
2238 types in some cases.
2239 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2240 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2241 * bug fix: #368: incorrect use of expressed vs. upgraded array
2243 * bug fix: #306a: more precise unions of array types.
2244 * thread-safety improvements:
2245 ** CONDITION-WAIT could return early on Linux, if the thread was
2246 interrupted and subsequently continued with SIGCONT.
2247 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2249 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2250 * added support for the ucs-2 external format. (contributed by Ivan
2252 * minor incompatible change: pretty printing of objects of type
2253 (cons symbol) is, in the default pprint-dispatch-table, now
2254 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2256 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2257 called later in a class's lifetime, possibly as late as when the
2258 first instance of the class is created. Previously,
2259 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2260 class became finalizeable.
2261 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2262 for multibyte external-format streams. (thanks to "vbzoli")
2263 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2264 with :ALLOCATION :CLASS inherited from superclasses of the
2266 * fixed bug: anonymous classes can now be created using the :NAME
2267 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2268 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2269 * fixed bug: core-files saved with :EXECUTABLE T can again be
2270 executed when SBCL_HOME isn't set. (reported by James Knight)
2271 * fixed bug: toplevel LOCALLY forms with declarations could
2272 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2273 * fixed bug: printing from several different threads using different
2274 values of *print-case* could cause invalid output, due to
2275 some internal special variables of the printer not being bound
2276 thread-locally (reported by Max Mikhanosha)
2277 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2278 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2279 (reported by Pascal Costanza)
2280 * fixed bug: FINALIZE-INHERITANCE is called from
2281 REINITIALIZE-INSTANCE on classes when the class has previously
2282 been finalized, as required by AMOP.
2283 * minor code generation optimizations:
2284 ** better register allocation in CLOS dispatching functions
2285 ** overflow detection when coercing signed bytes to fixnums on x86-64
2286 ** is now implemented with one IMUL instruction instead of three shifts
2287 ** more efficient bit-vector access on x86 and x86-64
2288 ** more efficient access to raw structure slots on x86 and x86-64
2289 * fixed some bugs revealed by Paul Dietz' test suite:
2290 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2291 return its argument.
2293 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2294 * feature: thread support on Solaris/x86, and experimental thread support
2296 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2298 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2299 default method for SLOT-UNBOUND.
2300 * minor incompatible change: prevent the user from specializing the
2301 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2302 somewhat counter to the intent of the protocol, I (CSR) think, and
2303 additionally it just doesn't work in SBCL as currently
2304 implemented, thanks to optimizations (that are always valid for
2305 the other three SLOT-VALUEish functions, but not for the setter).
2306 * minor incompatible change: the :SB-LDB feature is now enabled by
2307 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2308 the low-level debugger.
2309 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2310 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2311 down to an SB-SYS:FD-STREAM, allowing direct communication in
2312 more cases. Temporary files and pipes are still used as a fallback
2314 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2315 on the non-reentrant C functions localtime(3) and gmtime(3).
2316 * bug fix: global optimization policy was not visible in LOCALLY and
2318 * bug fix: class objects can be used as specializers in methods.
2319 (reported by Pascal Costanza)
2320 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2321 with a type error. (reported by blitz_ on #lisp)
2322 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2323 failed with a type error. (reported by Pascal Bourguignon)
2324 * bug fix: merging pathnames against defaults with :DIRECTORY
2325 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2326 (reported by James Y Knight)
2327 * bug fix: saving large (>2GB) cores on x86-64 now works
2328 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2329 constant index and a (simple-array (signed-byte 32)) array
2330 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2331 error (patch by Robert J. Macomber)
2332 * feature: TIME now displays the amount of run-time spent in GC
2333 * bug fix: The debugger now does a better job of respecting
2334 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2335 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2336 workaround for bug 403.)
2337 * bug fix: floating point exception handling now works on FreeBSD
2338 (thanks to NIIMI Satoshi)
2339 * fixed some bugs revealed by Paul Dietz' test suite:
2340 ** MISC.641: LET-conversion were not supposed to work in late
2342 * improvements to the Win32/x86 port:
2343 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2344 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2346 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2347 * new feature: source path information is generated for macro-expansion
2348 errors for use in IDE's like Slime (thanks to Helmut Eller)
2349 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2350 * bug fix: compiler does not loop forever on an invalid type in
2352 * improvement: compilation of most CLOS applications is significantly
2354 * optimization: added a limited bytecode compiler for simple toplevel
2355 forms, speeding up compilation and FASL loading
2356 * bug fix: the statistical profiler now properly distinguishes anonymous
2359 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2360 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2361 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2362 into subclasses of the finalized class. Now user calls to
2363 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2364 system return before any subclasses are finalized.
2365 * minor incompatible change: The reader no longer ignores errors
2366 regarding non-existent packages in #+ and #- feature tests.
2367 * new feature: command line options --no-sysinit, --no-userinit to
2368 inhibit loading the corresponding init files
2369 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2370 for sending data through UDP sockets (thanks to François-René Rideau)
2371 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2372 error is signalled instead (thanks to François-René Rideau)
2373 * minor incompatible change: Error signalling behaviour of lexical
2374 operations violating package locks has changed slightly. Refer to
2375 documentation on package locks for details.
2376 * enhancement: EVAL can process IF-expressions without resorting to the
2378 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2379 constant-folded properly due to missing out-of-line functions.
2380 (reported by Mika Pihlajamäki)
2381 * bug fix: LISTEN sometimes returned T even in cases where no data was
2382 immediately available from the stream
2383 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2384 were reversed. (reported by Levente Mészáros)
2385 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2386 when given a vector displaced to an adjustable array. (reported
2388 * bug fix: derivation of float boundaries from numbers outside the
2389 appropriate float range (reported by John Wiseman)
2390 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2392 * bug fix: precomputing cache entries for generic functions with
2393 some subclasses of specializers as yet invalid does not attempt to
2394 fill a cache line with a negative offset. (reported by Levente
2396 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2397 allow condition class objects as arguments to DOCUMENTATION and
2398 (SETF DOCUMENTATION); only find and set documentation for
2399 structure names for the STRUCTURE doc-type. (suggested by Gary
2401 * improvements to the Win32/x86 port:
2402 ** (user-homedir-pathname) and default initialization file
2403 locations now know about the user's "Documents and Settings"
2404 directory (thanks to Yaroslav Kavenchuk)
2405 ** run-program is implemented (thanks to Mike Thomas)
2406 ** sockets support (thanks to Timothy Ritchey)
2407 ** better backtrace support (thanks to Alastair Bridgewater)
2408 ** sb-grovel supported
2409 ** asdf-install and sb-posix work somewhat
2410 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2411 * improvements to the Solaris/x86 port:
2412 ** works on Solaris 11/Solaris Express
2413 ** floating-point exception handling support
2414 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2415 * fixed some bugs revealed by Paul Dietz' test suite:
2416 ** REMOVE-METHOD returns its generic function argument even when
2417 the method is not one of the generic functions' methods.
2418 ** objects declared as MEMBER types can be admissible arguments to
2419 structure accessors.
2420 ** printing characters should simply be printed by the FORMAT ~:C
2422 ** compiler failure when compiling functions with hairy constant
2423 defaults for optional parameters.
2424 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2425 function, which is already optimized.
2427 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2428 * new platform: experimental support for SBCL x86/Darwin, including
2429 MacOS X 10.4.5 on Intel.
2430 * new feature: Unicode character names are now known to the system
2431 (through CHAR-NAME and NAME-CHAR).
2432 * new feature: the filesystem location of SBCL's core file is
2433 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2434 * minor incompatible change: the contrib modules SB-POSIX and
2435 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2436 this change is to make it easier to distribute
2437 location-independent binaries.
2438 * bug fix: as implied by AMOP, standardized classes no longer have
2439 slots named by external symbols of public packages. (reported by
2441 * optimization: calling functions via constant symbols -- as in
2442 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2443 via the function object as in (FUNCALL #'FOO).
2444 * optimization: on x86 and x86-64, the calling convention for the
2445 case of dealing with an unknown number of values has been altered
2446 to be friendlier to the prediction heuristics implemented,
2447 particularly with reference to CALL and RET pairing. (thanks to
2448 Alastair Bridgewater)
2449 * optimization: on x86, the code for access to thread-local symbol
2450 values and binding/unbinding of thread-local symbols is smaller.
2451 (thanks to Alastair Bridgewater)
2452 * enhancement: CONSTANTP is now able to determine constantness of
2453 more complex forms, including calls to constant-foldable standardized
2454 functions and some special forms beyond QUOTE.
2455 * fixed bug: occasional GC crashes on Solaris/x86
2456 * optimization: x86-64 supports stack allocation of results of simple
2457 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2458 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2459 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2460 (thanks to James Knight)
2461 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2462 by the standard (thanks to Stephen Compall)
2464 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2465 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2466 be used for bundling the runtime and the core file into one
2467 executable binary. This feature is not currently supported on all SBCL
2468 platforms. (thanks to James Bielman and NIIMI Satoshi)
2469 * new feature: a generational or ephemeral garbage collector is now
2470 the default on the PowerPC platform (both Linux and Darwin). The
2471 old Cheney (stop and copy) collector is a build-time option.
2472 (thanks to Cyrus Harmon, after Raymond Toy)
2473 * minor incompatible change: the method by which SBCL finds its
2474 contributed modules has changed; it no longer relies on symbolic
2475 links from an $SBCL_HOME/systems directory, but searches directly
2476 in the subdirectories of $SBCL_HOME.
2477 * enhancement: the dynamic heap size on the Linux/PPC platform is
2478 markedly larger, even using the older Cheney garbage collector.
2479 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2480 certain complicated string types. (reported by Gary King)
2481 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2482 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2483 * fixed bug: DOCUMENTATION on structures no longer signals an
2484 error if no structure type of the right name exists. (reported by
2486 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2487 applicable non-standard primary or :AROUND method on
2488 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2489 no longer cause unbound variable errors. (reported by Kevin Reid)
2490 * fixed bug: metacircle resolution in cases where methods have slots
2491 added before the slots from STANDARD-METHOD. (reported by Jean
2493 * fixed bug: the Power PC assembly code for calling into lisp
2494 sometimes computed its return address wrongly (depending on the
2495 15th bit of the address, fixed at link time). This used to
2496 manifest itself in a segmentation violation while building PCL.
2497 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2498 many others over the years)
2499 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2500 the stack pointer (treated as a signed integer) is negative.
2501 (thanks to Peter van Eynde)
2503 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2504 * new platform: experimental support for the Windows operating
2505 system has been added. (thanks to Alastair Bridgewater)
2506 * fixed several bugs in and robustified the PPC FFI (including
2507 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2508 * bug fix: allow non-simple string symbol names (reported by Paul
2510 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2512 * bug fix: saving a core corrupted callbacks on x86/x86-64
2513 * bug fix: closed a loophole in metacircularity detection and
2514 grounding in the PCL implementation of CLOS.
2515 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2516 (reported by tomppa on #lisp)
2517 * bug fix: clear the direction flag on Lisp -> C transitions, as
2518 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2519 (reported by Andrej Grozin and Hendrik Maryns)
2520 * optimization: major improvements to GC efficiency on GENCGC platforms
2521 * optimization: faster implementation of EQUAL
2522 * optimization: emit more efficient opcodes for some common
2523 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2524 * optimization: several other minor code-generation improvements on x86-64
2525 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2527 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2528 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2529 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2530 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2531 by ANSI as a generic function, and for consistency (SETF
2532 GENERIC-FUNCTION-NAME) is treated likewise.
2533 * fixed bug #233.b: make constraint propagation notice when a variable
2534 value is changed after it is referenced but before it is used
2535 * fixed bug #296: no more arbitrary behaviour from filenames with
2536 odd characters as --load arguments. (reported by Adam Warner)
2537 * fixed bug #390: :CHARACTER-SET pathname components now work as
2538 expected. (reported by Tim Daly Jr)
2539 * fixed bug #391: complicated :TYPE intersections in slot
2540 definitions no longer cause an error in PCL internals.
2541 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2542 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2543 returning the number of octets which would be written to the
2544 file-stream. (thanks to Robert J. Macomber)
2545 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2546 arguments to the internal stream functions. (thanks to David
2548 * bug fix: stack exhaustion is now handled on the x86/SunOS
2549 platform. (thanks to Daisuke Homma)
2550 * bug fix: more accurate ROOM results on GENCGC platforms
2551 * optimization: improved type inference for arithmetic-for
2552 index variables in LOOP
2553 * optimization: faster floating-point SQRT on x86-64
2554 * fixed some bugs revealed by Paul Dietz' test suite:
2555 ** DOCUMENTATION returns NIL instead of "" for method combinations
2556 that don't have a docstring
2558 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2559 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2560 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2561 therefore are not customizeable by user code (as seems to be at
2562 least permitted and maybe required by AMOP). As a consolation,
2563 however, the SBCL implementation of these functions now calls
2564 REINITIALIZE-INSTANCE as specified by AMOP.
2565 * bug fix: slot-definition documentation is propagated as per ANSI
2566 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2567 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2568 argument, as do eslotd initialization methods. (from Pascal
2569 Costanza's "Closer" project)
2570 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2571 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2573 * bug fix: it is now possible to have more than one subclass of
2574 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2575 (reported by Bruno Haible, Pascal Costanza and others)
2576 * bug fix: the dependent update protocol now works for generic
2577 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2578 and Pascal Costanza)
2579 * bug fix: condition-class instances corresponding to
2580 DEFINE-CONDITION forms are now created eagerly. (reported by
2581 Kalle Olavi Niemitalo on comp.lang.lisp)
2582 * bug fix: floating point printing is more accurate in some
2583 circumstances. (thanks to Simon Alexander)
2584 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2585 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2586 * bug fix: callbacks on OS X now preserve stack-alignment.
2587 (thanks to Cyrus Harmon)
2588 * enhancement: the x86-64 disassembler is much better at
2589 disassembling SSE instructions. (thanks to Lutz Euler)
2590 * enhancement: CHECK-TYPE on a variable now allows type-inference
2591 (thanks to Vincent Arkesteijn)
2592 * optimization: improved performance of EUC-JP external format.
2593 (thanks to NIIMI Satoshi)
2594 * optimization: performance improvements to IO on file streams of
2595 :ELEMENT-TYPE CHARACTER
2596 * optimization: much faster memory allocation on x86-64
2597 * optimization: faster garbage collections (latency and throughput)
2599 * optimization: faster bignum subtraction and division on x86 and x86-64
2600 (thanks to Lutz Euler)
2601 * optimization: more accurate type-inference for loops that use a
2602 floating point index variable or a negative step.
2604 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2605 * bug fix: add a workaround to SBCL looping infinitely at startup on
2606 Linux kernels with apparently buggy implementations of personality().
2607 (thanks to Svein Ove Aas)
2608 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2609 (thanks to David Lichteblau)
2610 * bug fix: local bindings shadow global symbol macros for
2611 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2612 * optimization: non-open coded uses of numeric comparison operators
2613 (e.g. >) no longer cons when called with more than one parameter
2614 on platforms supporting dynamic-extent allocation.
2615 * enhancement: saving cores with foreign code loaded is now supported
2616 on MIPS/Linux in addition to the previously supported platforms.
2617 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2618 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2619 * bug fix: division by zero in sb-sprof when no samples were collected
2620 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2621 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2622 (thanks to Alexander Kjeldaas)
2623 * new feature: ignoring the return values of destructive functions
2624 like NREVERSE signals a compile-time style-warning.
2625 (thanks to Kevin Reid)
2626 * new feature: the alignment of alien structure fields can be
2627 explicitly specified. (thanks to Cyrus Harmon)
2628 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2629 and dump core on SIGQUIT
2631 ** incompatible change: threads do not inherit values of specials
2632 from their parents (see manual)
2633 ** bug fix: threads stacks belonging to dead threads are freed by the
2634 next exiting thread, no need to gc to collect thread stacks anymore
2635 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2636 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2637 ** bug fix: dynamic variable and thread start related gc lossage
2638 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2640 * fixed some bugs revealed by Paul Dietz' test suite:
2641 ** SUBTYPEP is slightly more accurate on heinously complicated
2642 CONS types where some of the members have uncertain (in the
2643 NIL, NIL sense) type relationships to each other.
2645 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2646 no longer purified unless :PURIFY T is explicitly specified.
2647 ** Non-purified cores are significantly smaller than before
2649 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2650 * new feature: timers based on Zach Beane's excellent timer package
2651 * added support for the following external formats: koi8-u,
2652 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2653 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2654 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2655 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2656 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2657 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2658 * incompatible change: a threaded SBCL will no longer revert to
2659 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2660 * bug fix: interrupts are disabled until startup is complete; no
2661 more sigsegvs when receiving a signal to soon
2662 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2664 * bug fix: add a workaround for the memory randomization features in
2665 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2666 workaround will only be in effect on systems with the proc filesystem
2668 * bug fix: printing objects of type HASH-TABLE signals a
2669 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2671 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2672 have been running for over 50 days. (reported by Gilbert Baumann)
2673 * bug fix: the logic for getting names of functions gets less
2674 confused when confronded with alternate-metaclass
2675 funcallable-instances. (reported by Cyrus Harmon)
2676 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2677 consistent, even on internal alternate-metaclass objects.
2678 * bug fix: flush closure information collected by physical
2679 environment analysis prepass before the main pass. (bug reported
2681 * bug fix: compiler pack phase does not modify a hashtable, which is
2682 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2683 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2684 may be expanded. (reported by Alexander <malishev> on c.l.l)
2685 * bug fix: no more style-warnings when compiling code using LAST
2686 under high-SPEED low-SPACE settings. (reported by David Wallin
2688 * fixed some incompatibilities between SBCL's MOP and the MOP
2690 ** the METAOBJECT class is now implemented;
2691 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2692 STANDARD-OBJECT, as required;
2693 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2694 now compatible (as required by VALIDATE-SUPERCLASS); there
2695 remains a consistency requirement over the presence or absence
2696 of the FUNCTION class in the superclass list of finalized
2697 classes; see the manual for more details;
2698 ** the :AROUND method for COMPUTE-SLOTS on
2699 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2700 requested slot ordering.
2702 ** bug fix: parent thread now can be gc'ed even with a live
2704 ** bug fix: binding a special with PROGV to no value is not
2705 the same as that symbol not having been bound (thanks to
2707 ** bug fix: binding specials is thread safe (thanks to
2709 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2710 and SB-SPROF do not die with 'no handler for signal XX in
2711 interrupt_handle_now(..)' anymore
2712 ** bug fix: WITH-TIMEOUT works with multiple running threads
2713 * fixed some bugs revealed by Paul Dietz' test suite:
2714 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2715 the :method-class keyword argument.
2717 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2718 * new port: the Solaris operating system on x86 processors is now
2719 mostly supported, though some rough edges in the environment
2720 remain. (thanks to Daisuke Homma)
2721 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2722 space for its heap. (thanks to Thiemo Seufer)
2723 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2724 closures. (thanks to Thiemo Seufer)
2725 * minor incompatible change: eof selects abort in the debugger.
2726 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2727 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2729 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2730 deprecated, and will go away in a future revision of SBCL.
2731 * minor incompatible change: GC-ON and GC-OFF are no longer
2732 implemented with a counter, it does not matter how many times gc
2733 is switched on or off
2734 * bug fix: discriminating functions for generic function classes
2735 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2736 make invalid assumptions about method precedence order. (reported
2738 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2739 platforms. (thanks to Thiemo Seufer)
2740 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2741 * bug fix: correct pathname printing with printer escaping is on.
2742 (thanks to Kevin Reid)
2743 * bug fix: complex VOP definitions in "user-space" no longer trigger
2744 package locks. (reported by Zach Beane)
2745 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2746 for funcallable-instance functions, and is no different from
2748 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2749 characters in the current readtable. (reported by Nicholas Neuss)
2750 * bug fix: SUBTYPEP on various CONS types returns more a more
2751 accurate acknowledgment of its certainty.
2752 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2753 lists in some cases. This partially fixes bug 384.
2754 * flush all standard streams before prompting in the REPL and the
2756 * bug fix: signal handling and triggering gc do not conflict
2757 directly anymore, in particular a high frequency sb-sprof does
2758 not prevent gc from running
2759 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2760 approximation for timezone and DST information between the
2761 universal time epoch and the smallest negative 32-bit time_t.
2762 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2763 year 1899 so long as the encoded time is non-negative.
2764 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2765 the correct answer for non-constant rotate amounts when performing
2766 an inline 32-bit rotation.
2768 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2769 there is only one thread in the session
2770 ** bug fix: memory leak for streams created in one thread and
2771 written to in another
2772 ** bug fix: lockup when compiled with gcc4
2773 ** bug fix: race that allows the gc to be triggered when gc is
2775 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2776 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2778 ** bug fix: finished threads are gc'ed properly
2779 * fixed some bugs revealed by Paul Dietz' test suite:
2780 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2781 has arguments with a different set of applicable methods from
2782 the orignal arguments.
2783 ** The type error thrown by MAP now has a correct expected-type
2785 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2786 name a compiled function.
2787 ** Three MISC tests where a large bignum was improperly coerced to
2788 a float that couldn't represent that bignum during type
2789 derivation were fixed.
2790 ** SUBTYPEP can now handle types involving the negation of a
2791 list-form FUNCTION type.
2792 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2793 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2794 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2796 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2797 * New feature: Experimental support for bivalent streams: streams
2798 opened with :element-type :default now allow character and binary
2799 (unsigned-byte 8) I/O
2800 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2801 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2803 * bug fix: no more highly sporadic "couldn't check whether ~S is
2804 readable" when reading a stream and an interrupt hits in the middle
2805 of a select system call
2806 * compiler better recognizes complex arrays (reported by Eduardo
2808 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2809 for variables on SBCL built with linkage-tables. (reported by Luis
2811 * various error reporting improvements.
2812 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2813 (Thanks to Thiemo Seufer)
2814 * bug fix: nested reader invokations work correctly
2815 * bug fix: it is possible to have simultaneous references to foreign
2816 code and foreign data with the same name.
2818 ** added x86-64 support
2819 ** incompatible change: the threading api now works with thread
2820 objects instead of thread ids
2821 ** bug fix: threads are protected from signals and interruption when
2822 starting up or going down
2823 ** bug fix: a race where an exiting thread could lose its stack to gc
2824 ** bug fix: don't halt on infinite error in threads if possible
2825 ** fixed numerous gc deadlocks introduced in the pthread merge
2826 ** bug fix: fixed thread safety issues in read and print
2827 ** bug fix: debugger doesn't hang on session lock if interrupted at
2828 an inappropriate moment
2829 ** bug fix: run-program is now thread safe(r)
2830 ** bug fix: inner with-recursive-lock no longer releases the mutex
2831 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2832 * fixed some bugs revealed by Paul Dietz' test suite:
2833 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2834 EXPECTED-TYPE slots filled.
2835 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2837 ** MAKE-CONDITION accepts classes as type-designators.
2838 ** COMPILE may never return NIL.
2839 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2840 range before calling Unix time functions
2842 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2843 * numerous signal handling fixes to increase stability
2844 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2845 * minor incompatible change: we now correctly canonize default
2846 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2847 as per the MOP, rather than the historical (INITARG INITFUNCTION
2848 INITFORM). (reported by Bruno Haible)
2849 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2850 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2851 for more information.
2852 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2853 pathname is a directory pathname.
2854 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2855 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2857 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2858 :METACLASS argument in addition to a class name. (reported by
2859 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2860 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2861 (reported by Bruno Haible; patch from Gerd Moellmann)
2862 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2864 * bug fix: more cleanups to the floating point exception handling on
2865 x86-64 (thanks to James Knight)
2866 * bug fix: the compiler does not try to constant fold calls of
2867 COERCE and BIT-* functions when they return freshly constructed
2868 objects. (reported by Nikodemus Siivola and Paul Dietz)
2869 * optimization: improved the MIPS versions of generic (in the
2870 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2871 * optimization: direct conversion of (unsigned-byte 32) to floats on
2872 the PowerPC platform.
2873 * optimization: structure instances with raw slots now use less
2874 memory, and probably show better memory locality. (thanks to
2876 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2877 are treated as requests for stack allocation on the x86-64,
2878 Alpha-32, PPC and SPARC platforms.
2879 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2880 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2881 (thanks to Tony Martinez)
2883 ** gcing a dead thread can no longer lead to lockups
2884 ** threads block signals until they are set up properly
2885 ** errno is no longer shared by threads
2886 ** interrupt-thread restores the eflags register on x86
2887 ** fixed some lockups due to gc/thread interaction
2888 * fixed some bugs revealed by Paul Dietz' test suite:
2889 ** invalid dotted lists no longer raise a read error when
2890 *READ-SUPPRESS* is T
2891 ** signal an error if a symbol that names a declaration is used
2892 as the name of a type, or vice versa
2893 ** allow using the (declare (typespec var*)) abbreviation for
2894 (declare (type typespec var*)) with all type specifiers
2895 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2896 ** always return NIL from PPRINT-POP when OBJECT is NIL
2897 ** don't signal errors when pretty-printing malformed LABELS,
2898 FLET or MACROLET forms
2899 ** declarations in a DOLIST body are also in scope for the
2901 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2903 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2906 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2907 * fixed cross-compiler leakages that prevented building a 32-bit
2908 target with a 64-bit host compiler.
2909 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2910 opened with :IF-EXISTS :OVERWRITE.
2911 * fixed bug 281: error for an invalid qualifier in a short-form method
2912 combination method is not signalled until the faulty method is called.
2913 * bug fix: iteration variable type inferrer failed to deal with open
2914 intervals. (reported by Alan Shields)
2915 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2916 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2917 or more runtime options were provided to the sbcl binary.
2918 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2919 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2920 * optimization: there's now a fast-path for fixnum arguments in the
2921 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2922 * optimization: the code generated on x86-64 is more compact thanks
2923 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2924 * bug fix: floating-point exception handling now partly works on
2925 x86-64. (Thanks to James Knight)
2926 * improvement to the MIPS backend from Thiemo Seufer: C-style
2927 64-bit long long arguments and return values to alien functions
2929 * fixed some bugs revealed by Paul Dietz' test suite:
2930 ** the type-error signalled from WARN has a filled-in DATUM slot.
2931 ** the type-error required when a stream is not associated with
2932 a file has the stream as its datum.
2933 ** type-errors on single-floats on x86-64 no longer have
2934 :INVALID-OBJECT as the datum
2935 ** the type-errors signalled for invalid function names now have
2936 a correct expected type
2937 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2938 for structures defined with a :TYPE. Documentation strings for
2939 typed structures are no longer immediately discarded
2940 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2941 broadcast streams and synonym streams. FILE-LENGTH now also works
2942 on broadcast streams.
2944 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2945 * incompatible change: the --noprogrammer option, deprecated since
2946 version 0.7.5, has been removed. Please use the equivalent
2947 --disable-debugger option instead.
2948 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2950 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2951 inoperational for a while now) has been completely removed.
2952 * null lexical environments are now printed as #<NULL-LEXENV>,
2953 significantly reducing the amount of clutter in typical backtraces.
2954 * documentation on weak pointers, finalization, and after GC hooks
2955 has been added to the manual.
2956 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2957 as other specialized array types, is much faster. SUBSEQ and
2958 COPY-SEQ on such arrays have also been sped up.
2959 * optimization: EQL is now more efficient when at least other argument
2960 is known to be of type (OR FIXNUM (NOT NUMBER)).
2961 * fixed bug: the runtime is now less vulnerable to changes in the
2962 size of the SBCL object on OS X, and virtual memory is reserved for
2963 all spaces that need to be at a fixed address.
2964 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2965 * fixed bug: finalizers and after GC hooks that cause consing are now
2967 * fixed bug: compiler error messages and summaries are now printed to
2968 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2969 * fixed inference of the upper bound of an iteration variable.
2970 (reported by Rajat Datta).
2971 * fixed bug 211e: calling local functions with duplicated constant
2972 keyword argument no longer causes a bogus style warning about an
2974 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2975 ftype declaration to be disregarded. (reported by Dave Roberts)
2976 * fixed bug 373: caused by erronous compilation of references to alien
2977 variables in the runtime on ppc/darwin.
2978 * fixed bug 376: CONJUGATE type deriver.
2979 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2980 (reported by Baughn on #lisp)
2981 * a cross-compiler bug on non-x86 platforms has been identified and
2982 fixed. (thanks to Bruno Haible)
2983 * improvements to the MIPS runtime code for increased stability.
2984 (thanks to Thiemo Seufer)
2985 * increased the maximimum compact environment size to allow
2986 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2987 * partial workaround for bug 135: don't name the function we're
2988 calling for hairy cases of EVAL, so as not to accumulate one environment
2989 entry per call to EVAL. (reported by Kevin Reid)
2990 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2991 * optimization: type testing for non-vector arrays should be faster.
2992 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2994 * bug fix: setting 31st element of a bit vector to zero did not work
2996 * bug fix: redefining a class definition which failed due to a
2997 previous accessor / function clash now works (but see BUGS entry
2998 #380 for more problems in this area). (thanks to Zach Beane)
2999 * the long form of DEFINE-METHOD-COMBINATION disables method group
3000 checking when given a single method group with pattern *. (thanks
3002 * on x86 compiler supports stack allocation of results of simple
3003 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3004 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3005 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3006 * fixed some bugs related to Unicode integration:
3007 ** the restarts for recovering from input and output encoding
3008 errors only appear when there is in fact such an error to
3010 * fixed some bugs revealed by Paul Dietz' test suite:
3011 ** MISC.549 and similar: late transformation of unsafe type
3012 assertions into derived types caused unexpected code
3014 ** SCALE-FLOAT type deriver is less wrong.
3015 ** type derivers for EXP, LOG and similar functions compute result
3016 types for complex arguments better.
3017 ** (MISC.563) CONJUGATE type deriver works for very restricted
3019 ** out-of-line type testers for character strings are available.
3020 ** EQUAL compiler transform understands specialness of objects
3022 ** accessing double-floats stored on the stack now works on x86-64.
3023 ** debugger internals could sometimes create invalid lispobjs,
3024 resulting in GC crashes.
3025 ** MISC.548: type check weakening can convert required type into
3027 ** initialization forms for bindings are not in scope of free special
3030 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3031 * incompatible change: thread support for non-NPTL systems has
3032 been removed - locking is buggy and unreliable. A threaded
3033 SBCL build will now warn at startup and refuse to create
3034 new threads, unless futex support is detected in the kernel
3035 * incompatible change: the top level REPL now has only an ABORT
3036 restart associated with it, not TOPLEVEL and ABORT as it used to.
3037 TOP and TOPLEVEL are now available as debugger commands for
3038 returning to the top level.
3039 * incompatible change: forms evaluated in the REPL now use the
3040 global optimization policy.
3041 * incompatible change: user- and system-initialization files are
3042 no longer processed with LOAD, but by READ and EVAL; hence the
3043 global optimization policy, startup package, readtable, etc,
3045 * The .fasl file format number has been incremented because of
3046 various incompatible changes.
3047 * internal entry point details and argument counts no longer appear
3048 in backtraces unless explicitly requested by setting
3049 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3050 * built-in and standard functions no longer have names like "top
3051 level local call to FOO".
3052 * fixed bug 32: functions defined in non-null lexical environments
3053 now have more legible printed representation
3054 * fixed bug 33: functions defined in non-null lexical environemnts
3055 are now more amenable to inspection by INSPECT.
3056 * workaround for bug 354: XEPs no longer appear in backtraces unless
3057 explicitly requested.
3058 * fixed bug: receiving the signal which results from attempting to
3059 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3060 SIGBUS on other *BSDs) on architectures where the C stack is also
3061 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3062 to debugger confusion or wild instability. (reported by Cheuksan
3064 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3065 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3066 (reported by Lutz Euler)
3067 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3068 compiled code. (reported by Paul Dietz)
3069 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3070 specialized parameter to a method to something that is not TYPEP
3071 the specializer is now possible.
3072 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3073 face of package deletion.
3074 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3075 pathname. (reported by David Tolpin on c.l.l)
3076 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3077 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3078 STRING-STREAM and FILE-STREAM, respectively.
3079 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3080 than previously; in addition, its test suite is now run on build.
3081 (thanks to Luke Gorrie)
3082 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3083 * optimization: added a immediate representation for single-floats
3085 * fixed some bugs revealed by Paul Dietz' test suite:
3086 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3087 ** attempting to create a package with a colliding nickname causes
3088 correctable errors to be signalled.
3089 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3090 ** several x86-64 backend bugs related to sign-extension of immediate
3093 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3094 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3095 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3097 * fixed loading of multiply forward-referenced layouts.
3098 (thanks to Cheuksan Wang)
3099 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3100 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3101 (see COMPILE-FILE documentation for details of :PRINT option)
3102 * fixed bugs 19 and 317: fixed-format floating point printing is
3103 more accurate. This also fixes a bug reported by Adam Warner
3104 related to the ~@F format directive.
3105 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3107 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3108 dispatch table if the from-char is a dispatch macro character.
3109 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3110 by the wordsize no longer ignore the last word. (reported by Lutz
3112 * fixed bug in type checking of dynamic-extent variables. (reported
3114 * optimization: sequence traversal functions use their freedom to
3115 coerce function designators to functions.
3116 * optimization: code with many calls to CLOS methods specialized on
3117 CLOS classes has had redundant type checks removed.
3118 * optimization: added declarations to speed up operations that access
3119 the internal character database (for example STRING-UPCASE)
3120 * optimization: comparison operations between floats and sufficiently small
3121 fixnums no longer create extra rationals
3122 * fixed some bugs related to Unicode integration:
3123 ** portions of multibyte characters at the end of buffers for
3124 character-based file input are correctly transferred to the
3125 start of the buffer at the next read.
3126 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3127 passing it through to OPEN.
3128 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3129 argument given to internal calls to OPEN.
3130 ** the built-in comment readers (introduced by character sequences
3131 ";" and "#|") are more forgiving to encoding errors; they will
3132 STYLE-WARN and then attempt to resync the stream at a character
3133 boundary. (thanks to Teemu Kalvas)
3134 * fixed some bugs in the x86-64 port:
3135 ** Negative short int return values from c-calls are sign-extended
3137 ** The stack is aligned to 16-bytes for c-calls, as required by
3138 the ABI. (thanks to Cheuksan Wang)
3139 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3140 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3141 for enums. (thanks to Vincent Arkesteijn)
3142 ** Multiple small optimizations and bugfixes for floating point
3144 * fixed some bugs revealed by Paul Dietz' test suite:
3145 ** Space, Tab, Linefeed, Return and Page have the invalid
3146 secondary constituent character trait.
3147 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3149 ** WITH-INPUT-FROM-STRING should only update the index place on
3151 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3152 works more reliably.
3153 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3154 with one-dimensional arrays with fill pointers.
3155 ** TYPE-OF failed on a complex with an integer realpart and a
3157 ** compiler failure during type inference for the code of form
3158 (IF (EQL X (THE ...)) ...) (MISC.535).
3160 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3161 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3162 platform. The port supports 61-bit fixnums, large memory spaces
3163 and reloading shared object files.
3164 * enhancement: saving cores with foreign code loaded is now
3165 supported on ppc/Darwin in addition to the previously supported
3167 * enhancement: the statistical profiler now walks deeper into the
3168 call stack for more meaningful call-graphs and accrued time
3169 reports (x86/x86-64 only). It also now reports time spent in
3171 * enhancement: it is now possible to trace most individual methods
3172 of a generic function in addition to tracing the generic function
3174 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3176 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3177 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3178 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3179 produces an error. (thanks to Vincent Arkesteijn)
3180 * bug fix: NAMESTRING on pathnames with :WILD components in their
3181 directories works correctly. (thanks to Artem V. Andreev)
3182 * fixed bug 125: compiler preserves identity of closures. (reported
3184 * bug fixed: functions with &REST arguments sometimes failed with
3185 "Undefined function" when compiled with (DEBUG 3). (reported by
3187 * bug fix: overflow during compiling of setting element of a bit
3188 vector with constant index and value. (reported by Timmy Douglas)
3189 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3190 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3191 * on x86 compiler partially supports stack allocation of dynamic-extent
3193 * GO and RETURN-FROM do not check the extent of their exit points
3194 when compiled with SAFETY 0.
3195 * fixed some bugs related to Unicode integration:
3196 ** encoding and decoding errors are now much more robustly
3197 handled; it should now be possible to recover even from invalid
3198 input or output to the terminal. (thanks to Teemu Kalvas)
3199 ** provided a first cut at implementing STRING-TO-OCTETS and
3200 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3201 ** altered the SB-MD5 contributed module slightly, changing the
3202 interface just enough for it to be supportable for builds where
3203 lisp characters are not eight bits.
3204 * fixed some bugs revealed by Paul Dietz' test suite:
3205 ** the FORMATTER-generated functions for ~V[ conditionals require
3206 the correct number of arguments.
3207 ** READ-FROM-STRING returns the mandated second value when applied
3208 to displaced strings.
3209 ** the #\Rubout and #\Backspace characters are treated as invalid
3210 constituent characters by the tokenizer.
3212 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3213 * new feature: reloading changed shared object files with
3214 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3215 * new feature: references to foreign variables and functions
3216 can now be compiled and loaded before the corresponding shared
3217 object file is loaded, as long as the foreign definitions are
3218 available at runtime.
3219 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3220 supported. (thanks to Dan Debertin)
3221 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3222 just keywords. (thanks to Vincent Arkesteijn)
3223 * fixed bug #331: structure-class instances corresponding to
3224 DEFSTRUCT forms are now created eagerly.
3225 * fixed bug #345: backtraces from calls to undefined functions work
3226 on x86 as well. Related bug #61 is now also partially fixed on x86
3227 (backtraces from throws to unknown catch tags.)
3228 * bug fix: lambda-list parsing is now stricter vrt. order and number
3229 of lambda-list keywords.
3230 * bug fix: as specified by AMOP, an error is signalled if a
3231 class-option appears multiple times in a DEFCLASS form. (reported
3233 * bug fix: RANDOM can be compiled when the compiler derives the type
3234 of its numeric argument as a disjoint set of small integers.
3235 (reported by Paul Dietz)
3236 * bug fix: starting a core saved with shared objects loaded when
3237 those objects are not available no longer causes threaded SBCL to
3238 hang. (reported by Sean Ross)
3239 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3241 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3242 argument, which must always be NIL. (reported by Kalle Niemitalo)
3243 * bug fix: printing 1.0d+23 no longer results in an error.
3244 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3245 * bug fix: structure slot setters preserve evaluation order. (thanks
3247 * fixed some bugs related to Unicode integration:
3248 ** RUN-PROGRAM can allow its child to take input from a Lisp
3249 stream. (reported by Stefan Scholl)
3250 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3251 locales. (reported by Ken Causey)
3252 * fixed some bugs revealed by Paul Dietz' test suite:
3253 ** INCF, DECF and REMF evaluate their place form as specified in
3255 ** FORMATTER expands ~{ ~} iteration directives with V or #
3256 parameters correctly.
3257 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3258 consequent uses no arguments correctly.
3259 ** the system has a partial understanding of the (COMPLEX RATIO)
3261 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3264 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3265 * new feature: a build-time option (controlled by the :SB-UNICODE
3266 keyword feature, enabled by default) for building the system with
3267 support for the entire 21-bit character space defined by the
3269 * new feature: the system now has rudimentary external-format
3270 support; the primary user-visible change at this time is that
3271 characters with the high bit set (such as lower-case-e-acute) will
3272 print correctly to a terminal in a UTF-8 environment.
3273 * minor incompatible change: BASE-CHAR no longer names a class;
3274 however, CHARACTER continues to do so, as required by ANSI.
3275 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3276 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3277 has been moved to the SB-EXT package (temporarily re-exported from
3279 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3280 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3282 * fixed bug #351: better error-handlind and reporting for malformed
3284 * fixed bug #350: bignum-printing is now more memory-efficient,
3285 allowing printing of very large bignums, eg. (expt 2 10000000).
3286 (reported by Bruno Haible)
3287 * fixed bug #302: better primitive-type selection for intersection
3289 * fixed bug #308: non-graphic characters now all have names, as
3290 required. (reported by Bruno Haible)
3291 * bug fix: redefining a class with different superclasses now correctly
3292 removes it from the direct-subclasses of its previous superclasses.
3293 (reported by David Morse)
3294 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3295 new value now works. (reported by Bruno Haible)
3296 * bug fix: correct canonicalization of multiple non-standard slot
3297 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3298 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3299 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3300 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3301 now exists, an signals an error.
3302 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3303 during macroexpansion for non-iteration variables as well. (reported
3304 by Bruno Haible for CMUCL)
3305 * bug fix: Cyclic structures and unprintable objects in compiler
3306 messages no longer cause errors. (reported by Bruno Haible)
3307 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3308 and READ-FROM-STRING all now return a primary value of NIL if
3309 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3310 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3311 (reported by Bruno Haible for CMUCL)
3312 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3313 do not designate a condition. (reported by Bruno Haible for
3315 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3316 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3317 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3318 permitting resolution in favour of any of the conflicting symbols.
3319 (reported by Bruno Haible for CMUCL)
3320 * bug fix: EQUAL compiler optimizations is less aggressive on
3321 strings which can potentially compare true despite having distinct
3322 specialized array element types.
3323 * bug fix: unit enumerations can be defined without dividing by
3324 zero. (thanks to Vincent Arkesteijn)
3325 * FORMAT compile-time argument count checking has been enhanced.
3326 (report from Bruno Haible for CMUCL)
3327 * a partial workaround for the bug 262: the compiler does not try to
3328 inline-expand a local function doing RETURN-FROM from a deleted
3329 BLOCK. (thanks to Peter Denno for the bug report and to David
3330 Wragg for the simple test case)
3331 * fixed some bugs revealed by Paul Dietz' test suite:
3332 ** RENAME-PACKAGE allows all package designators as new package
3334 ** constraint propagation and lambda variable substitution are
3335 more cautious in dealing with partially deleted code.
3336 ** compiler sometimes lost reoptimization passes.
3337 ** CERROR, given a condition as condition designator, passes its
3338 remaining arguments to the continue format control without
3340 ** Case-altering FORMAT directives work correctly on non-ASCII
3342 ** The REAL type specifier handles bounds outside the floating
3343 point ranges without signalling FLOATING-POINT-OVERFLOW.
3344 ** Functions with IR1-transformations can create intercomponent
3345 references to global functions.
3346 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3348 ** FORMAT ~R treats a nil value for its first parameter correctly.
3350 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3351 * enhancement: saving cores with foreign code loaded is now
3352 supported on x86/NetBSD and sparc/Linux in addition to the previously
3353 supported platforms.
3354 * bug fix: on some platforms repeated installations caused multiple
3355 copies of HTML documentation to be installed -- should not happen
3356 any more. (reported by Stefan Scholl)
3357 * bug fix: parsing self-recursive alien record types multiple times
3358 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3359 original patch by Helmut Eller for CMUCL)
3360 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3361 (thanks to Richard Kreuter)
3362 * bug fix: defining classes whose accessors are methods on existing
3363 generic functions in other (locked) packages no longer signals
3364 bogus package lock violations. (reported by François-René Rideau)
3365 * bug fix: special variables as DEFMETHOD parameters no longer have
3366 associated bogus type declarations. (reported by David Wragg and
3368 * bug fix: read-write consistency on streams of element-type
3369 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3370 * bug fix: redefiniton of the only method of a generic function with
3371 no DEFGENERIC no longer emits a full WARNING. In addition,
3372 redefinition of generic functions with no DEFGENERIC to an
3373 incompatible lambda list now signals an error. (thanks to Zach
3375 * bug fix: DEFGENERIC now works even when there's a function of the
3376 same name in an enclosing lexical environment. (thanks to Zach
3378 * fixed compiler failure, caused by instrumenting code during
3379 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3380 * optimization: added loop analysis and improved register allocation
3381 * fixed some bugs revealed by Paul Dietz' test suite:
3382 ** POSITION on displaced vectors with non-zero displacement
3383 returns the right answer.
3384 ** (SIMPLE-STRING) is a valid type specifier for sequence
3386 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3388 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3389 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3391 ** The justification version of the FORMAT ~< directive treats
3392 non-zero minpad parameter correctly.
3394 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3395 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3396 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3397 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3398 the supported interface.
3399 * new feature: Single-stepping of code compiled with DEBUG 2 or
3400 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3401 * new feature: saving cores with foreign code loaded is now
3402 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3403 Timothy Moore's work for CMUCL)
3404 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3405 parameters to * instead of NIL if no initform is supplied.
3406 (reported by Johan Bockgaard)
3407 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3408 correctly when FUNCALL appears as the car of the form. Note:
3409 despite this FUNCALL forms are not currently subject to
3410 compiler-macro expansion. (port of Raymond Toy's fix for the
3411 same from CMUCL, reported by Johan Bockgaard)
3412 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3413 (thanks for Teemu Kalvas)
3414 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3415 case instead of terminating the iteration (thanks for Julian
3416 Squires, Sean Champ and Raymond Toy)
3417 * bug fix: incorrect expansion of defgeneric that caused a style
3418 warning. (thanks for Zach Beane)
3419 * bug fix: slot accessor effective method computation works properly
3420 for classes with multiple non-standard applicable methods on
3421 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3422 * on x86 compiler supports stack allocation of results of LIST and
3423 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3424 CMUCL implementation by Gerd Moellmann)
3425 * fixed some bugs revealed by Paul Dietz' test suite:
3426 ** FORMAT strings with both the ~<~:;~> form of the justification
3427 directive and pretty-printing directives cause an error.
3429 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3430 * incompatible change: the internal functions
3431 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3432 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3433 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3434 instead of the old functions.
3435 * new feature: on platforms where "dladdr" is available foreign
3436 function names now appear in backtraces. (based on Helmut Eller's
3438 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3439 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3441 * documentation: ASDF manual is now distributed with SBCL.
3442 * bug fix: SBCL can now load its contributed modules with REQUIRE
3443 even if the system-provided entries have been removed from
3444 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3446 * bug fix: backtraces involving undefined functions or assembly
3447 routines are more informative. (thanks to Brian Downing)
3448 * bug fix: mutually referent alien structures now work correctly.
3449 (reported by Rick Taube)
3450 * bug fix: structures defined by WITH-ALIEN can be referred to
3451 within other definitions in the same WITH-ALIEN.
3452 * bug fix: division operators (MOD, TRUNCATE and the like) with
3453 constant zero divisors and integer dividends no longer generate
3455 * bug fix: provide default methods for INPUT-STREAM-P and
3456 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3457 * bug fix: improve the detection and resolution of MOP metacycles
3458 (where effective method computation depends on the generic function
3459 having its effective method computed). (reported by Bruno Haible)
3460 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3461 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3462 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3463 * bug fix: pathnames with relative directory components can be
3464 represented relative to default pathnames.
3465 * optimization: in taking the GCD of bignums, reduce the two bignums
3466 to approximately the same size (using Euclid's algorithm) before
3467 applying the more sophisticated binary GCD. (thanks to Juho
3469 * optimization: COUNT on bitvectors now operates word-at-a-time.
3470 * optimization: ASH with a positive, but not necessarily constant,
3471 (leftwards) shift, when in a modular context, is compiled to a
3473 * fixed some bugs revealed by Paul Dietz' test suite:
3474 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3475 if the corresponding argument is NIL.
3476 ** FORMAT directives accepting a minpad parameter treat negative
3478 ** literal commas as character parameters to FORMAT directives are
3480 ** literal spaces directly after ~<Newline> directives within a
3481 format-logical-block (~:< ~@:>) do not induce :FILL-style
3482 conditional newlines.
3483 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3484 as specified: it no longer includes conditional newlines).
3485 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3487 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3488 :PER-LINE-PREFIX argument does not evaluate to a string.
3490 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3491 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3492 the manual for details; for now, package locks can be disabled by
3493 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3494 if no major problems are found then it is likely that they will be
3495 compiled in unconditionally.
3496 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3497 unsupported operators on all platforms. To load a shared library
3498 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3499 object file, link it into a shared library outside of SBCL and
3500 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3502 * bug workaround: ROOM T and the GC were not working together
3503 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3504 reporting facility aren't preserved. That reporting has been
3505 disabled, so now until and unless someone figures out how to make it
3506 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3507 * minor incompatible change: as threatened around sbcl-0.8.0, the
3508 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3509 The symbols are also exported from SB-PCL for backwards
3510 compatibility, but more so than before SB-PCL should be treated as
3511 an implementation-internal package.
3512 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3514 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3515 It is known as of this release not to work on the Alpha, however.
3516 * fixed bug #167: errors signalled due to illegal syntax in method
3517 bodies are now more legible.
3518 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3519 designators and can hence be used with TYPEP.
3520 * fixed bug #333: CHECK-TYPE now ensures that the type error
3521 signalled, if any, has the right object to be accessed by
3522 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3523 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3524 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3526 * fixed bug #334: programmatic addition of slots using specialized
3527 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3528 and :ALLOCATION :CLASS slots.
3529 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3530 float exponents. (rereported by Peter Seibel)
3531 * fixed a bug: #\Space (and other whitespace characters) are no
3532 longer considered to be macro characters in standard syntax by
3533 GET-MACRO-CHARACTER.
3534 * fixed bug: initialization of condition class metaobjects no longer
3535 causes an instance of the condition to be created. (reported by
3537 * fixed bug: it is now possible to have slots such that
3538 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3539 description is neither :INSTANCE nor :CLASS.
3540 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3541 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3542 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3543 non-standard SLOT-DEFINITION-ALLOCATION values.
3544 * fixed bugs: various race conditions handling exiting threads.
3545 CL-PPCRE's thread torture test now passes.
3546 * fixed arguably-a-bug: GC time proportional to number of threads in
3547 system even when most of them are idle
3548 * optimization: improved performance of BIT and SBIT on bit-vectors.
3549 * .fasl file incompatibility: The fasl file version number has
3550 been incremented because of changes associated with package locks.
3552 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3553 * minor incompatible change: the system no longer provides
3554 optimization hints (conditions which are TYPEP
3555 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3556 mode; these hints are still emitted when higher SPEED optimization
3558 * new contrib module: a sampling profiler (profiling by statistical
3559 sampling, rather than by instrumenting functions) is available as
3560 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3561 * the behaviour of the standard function ED is now customizeable by
3562 third parties through a hook variable: see ED's documentation
3563 string for information on the protocol.
3564 * the compiler no longer emits efficiency notes for (FUNCALL X)
3565 when the type of X is uncertain under default optimization
3567 * fixed bug 276: mutating a binding of a specialized parameter to a
3568 method to something that is not TYPEP the specializer is now
3570 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3571 exhibit the required behaviour on the x86 platform. (thanks to
3572 Peter van Eynde, Eric Marsden and Bruno Haible)
3573 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3574 even for difficult arguments. (reported by Peter Graves)
3575 * fixed bug 141a: the backquote printer now descends quoted
3577 * fixed another bug in backquote printing: no more destructive
3578 modification of the form's list structure. (reported by Brian
3580 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3581 move between its address being taken and the call to
3582 interrupt_thread, fixing a crashing race condition.
3583 * the SB-POSIX contrib implementation has been adjusted so that it
3584 no longer exhibits ridiculously poor performance when constructing
3585 instances corresponding to C structs.
3587 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3588 * minor incompatible change: the sb-grovel contrib now treats C
3589 structures as alien (in the sense of SB-ALIEN) objects rather than
3590 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3591 has implications for memory management of client code
3592 (sb-grovel-returned objects must now be manually managed) and for
3593 type safety (alien objects now have full types).
3594 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3595 used to control emission of compiler diagnostics, rather than the
3596 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3597 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3598 quality should be considered deprecated.
3599 * install.sh now installs the user manual as well
3600 * (not quite a new documentable feature, but worth considering in
3601 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3602 beginnings of a semantically meaningful condition hierarchy is
3603 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3605 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3606 designator as the defaults argument.
3607 * fixed bug: Displaced arrays whose displaced-to array has become
3608 too small now cause ARRAY-DIMENSION to signal an error, providing
3609 for safer bounds-checking. (reported by Bruno Haible)
3610 * fixed bug: DEFCLASS slot definitions with identical :READER and
3611 :WRITER names now signal a reasonable error. (reported by Thomas
3613 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3615 * fixed bug: Invalid slot specification errors now print correctly.
3616 (thanks to Zach Beane)
3617 * fixed bug 320: Shared to local slot value transfers in class
3618 redefinitions now happen corrently from superclasses as
3619 well. (reported by Bruno Haible)
3620 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3622 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3623 improper lists correctly. (reported by Bruno Haible)
3624 * fixed bug 313: source-transform for <fun-name> was erroneously
3625 applied to a call of a value of a variable with name <fun-name>.
3626 (reported by Antonio Menezes Leitao)
3627 * fixed bug 307: The obsolete instance protocol ensures that
3628 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3629 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3630 remove dead unknown-values globs from the middle of the stack.
3631 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3632 easier to resume long computations after using *BREAK-ON-SIGNALS*
3633 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3634 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3635 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3636 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3637 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3638 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3640 * fixed a (fairly theoretical) bug in string printing: if
3641 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3642 does not have array-element-type equal to the most general string
3644 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3645 function name. (thanks to Nikodemus Siivola)
3646 * fixed bug: compile-time format string checker failed on
3647 non-closed ~{. (reported by Thomas F Burdick)
3648 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3649 don't warn on legal loop code involving more than one aggregate
3650 boolean. (thanks to Nikodemus Siivola)
3651 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3652 in keyword position to MAKE-PACKAGE was not being reported as
3654 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3655 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3657 * fixed bugs 280 and 312: the checking for multiple definitions in a
3658 file is less likely to become confused by uses of inline
3660 * fixed bug: the #S reader macro performs the keyword coercion
3661 specified for slot names. (reported by Kalle Niemitalo)
3662 * fixed bug: lambda lists may contain symbols whose names start with
3663 & but are not lambda-list-keywords; their occurrence triggers a
3665 * fixed bug 321: define-method-combination argument lambda lists do
3666 not cause invalid code to be generated when &optional or &aux
3667 variables have default values. (reported by Bruno Haible)
3668 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3669 have CLOS classes; this appears also to have fixed reported
3670 instability in stack exhaustion detection.
3671 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3672 MUFFLE-WARNING when no associated restart is present is now
3674 * optimization: rearranged the expansion of various defining macros
3675 so that each expands into only one top-level form in a
3676 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3678 * optimization: used a previously little-used slot in symbols to
3679 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3681 * fixed some bugs revealed by Paul Dietz' test suite:
3682 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3684 ** Fixed an optimization bug related to inheritance of initforms
3685 from local to shared slots.
3686 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3687 ** CAST optimizer forgot to flush argument derived type.
3688 ** print/read consistency on floats is now orders of magnitude
3689 more likely. (thanks also to Bruno Haible for a similar report
3691 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3692 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3693 for objects of type REAL. Make it so.
3694 ** SXHASH is specified (infelicitously) to respect similarity,
3695 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3696 it so. (thanks to Markus Ziegler)
3697 ** on the Alpha, the compiler succeeds in compiling functions
3698 returning a known number of arguments greater than 63.
3699 ** fixed handling of invalid NIL arguments in keyword position
3701 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3703 ** provided a readably-printable representation for RANDOM-STATE
3705 ** ensured that pathnames, where they have a namestring, always
3706 print using #P"..." syntax.
3708 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3709 * Support for the forthcoming 2.0 version of the NetBSD kernel
3710 running on x86 hardware has been added. (thanks to Perry
3711 E. Metzger most immediately, and others for their past work)
3712 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3713 current release version; SBCL's OpenBSD support had been broken
3714 since about the time of OpenBSD's switch to ELF binary format.)
3715 * [placeholder for DX summary]
3716 ** user code with &REST lists declared dynamic-extent, under high
3717 speed or space and low safety and debug optimization policy.
3718 * The manual has been converted to Texinfo format and the debugger
3719 chapter from the cmucl manual has been added.
3720 * A facility has been added to extract documentation strings from
3721 sbcl and store them as Texinfo-formatted snippets for inclusion in
3722 the manual (via Texinfo's @include directive)
3723 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3724 the test case to Dave Roberts)
3725 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3726 pointers. (reported by Sean Ross)
3727 * bug fix: PROFILE output is printed nicely even for large numerical
3728 values. (thanks to Zach Beane)
3729 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3730 greater than 32 handle EOF correctly.
3731 * bug fix: on X86 an immediate argument of the IMUL instruction is
3732 correctly printed in disassembly. (thanks to Lutz Euler)
3733 * bug fix: class slots in redefined classes preserve their old
3734 values. (thanks to Bruno Haible and Nikodemus Siivola)
3735 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3736 succeeds. (reported by Marco Baringer)
3737 * fixed some bugs revealed by Paul Dietz' test suite:
3738 ** READ-SEQUENCE now works on ECHO-STREAMs.
3739 ** RATIONALIZE works more according to its specification. (thanks
3742 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3743 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3744 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3745 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3746 should matter to you only if you rebind the printer control
3747 variables and then find you want different bindings in the
3748 debugger than in the ordinary execution of your program.)
3749 * The runtime build system has been tweaked to support building
3750 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3751 assembler and linker. (thanks to Nikodemus Siivola)
3752 * Unbound, undefined, undeclared variables now trigger full
3753 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3754 more often programmer error than deliberate exploitation of undefined
3756 * optimization: the hash algorithm for strings has changed to one
3757 that is less vulnerable to spurious collisions. (thanks to Juho
3759 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3760 needless bounds checking. (thanks to Juho Snellman)
3761 * optimization: implemented multiplication as a modular
3762 (UNSIGNED-BYTE 32) operation on the PPC backend.
3763 * fixed some bugs revealed by Paul Dietz' test suite:
3764 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3766 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3767 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3768 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3770 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3772 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3774 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3775 their output stream on EOF from read.
3776 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3777 have been read to end-of-file.
3778 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3780 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3781 description of determination of which consecutive characters
3783 ** Printing the "Space" character with escaping on now yields "#\\ ",
3784 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3785 ** Reading floating-point numbers with *READ-BASE* set to a number
3786 less than 10 works correctly.
3787 ** Reading floating-point numbers with *READ-BASE* set to a number
3788 more than 10 works correctly.
3789 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3790 the readtable currently in effect.
3792 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3793 * minor incompatible change: parsing of namestrings on a physical
3794 (Unix) host has changed; numbers after the final #\. in a
3795 namestring are no longer interpreted as a version field. This is
3796 intented to be largely invisible to the user, except that the
3797 meaning of the namestring "*.*.*" has changed: it now refers to a
3798 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3799 should usually be replaced by
3800 (make-pathname :name :wild :type :wild :version :wild)
3801 with the added benefit that this is more likely to be portable.
3802 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3803 option to OPEN now signals an error if the file being opened
3804 exists; this may have an impact on existing code.
3805 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3806 signals received, on the PowerPC platforms (both Linux and
3807 Darwin). (thanks to Pierre Mai for pointing out the location of
3809 * several fixes on OS X: The system now builds and runs cleanly on
3810 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3811 (thanks to Brian Mastenbrook)
3812 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3813 second-resolution: integer multiples of 1/3600 between -24 and 24.
3814 (thanks to Vincent Arkesteijn)
3815 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3816 type when called with 1 argument; PEEK-CHAR checked type of
3817 PEEK-TYPE only after having read first character from a
3818 stream. (reported by Peter Graves)
3819 * bug fix: the garbage collector now has much better locality
3820 behaviour, and in particular no longer treats all memory as being
3821 exhausted when many small objects point to each other in a deeply
3823 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3824 recognized as being TYPEP their class.
3825 * bug fix: the PUSHNEW documentation string has been corrected.
3826 (thanks to Vincent Arkesteijn)
3827 * bug fix: defaulting of the value for the last of an atypically
3828 large number of multiple values being bound was not being
3829 performed correctly on the Alpha or PPC platforms
3830 * optimization: implemented multiplication as a modular
3831 (UNSIGNED-BYTE 32) operation on the x86 backend.
3832 * optimization: SEARCH on simple-base-strings can now be open-coded.
3833 (see also contrib/compiler-extras.lisp for inspiration for
3834 teaching the compiler about the Boyer-Moore algorithm).
3835 * value, returned by MAX (and MIN) called with several EQUALP, but
3836 not EQL, arguments now does not depend on compiler settings.
3837 * fixed some bugs revealed by Paul Dietz' test suite:
3838 ** in stack analysis liveness information is propagated from
3839 non-local entry points.
3840 ** pathwise CAST removing failed when the CAST node did not start
3842 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3843 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3845 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3846 host is already defined.
3847 ** RENAME-FILE works on streams instead of signalling an internal
3849 ** PEEK-CHAR uses the current readtable when determining whether
3850 or not a character is whitespace.
3851 ** MERGE-PATHNAMES handles the case when the pathname does not
3852 specify a name while the default-pathname specifies a version.
3853 ** Pathnames now stand a better chance of respecting print/read
3855 ** Attempting to use standardized file system operators with a
3856 pathname with invalid :DIRECTORY components signals a
3858 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3860 ** DIRECTORY on logical pathnames is more correct.
3861 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3862 signal a TYPE-ERROR if their argument is not a stream.
3863 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3864 designator argument does not designate a stream.
3865 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3866 examining the synonym.
3867 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3869 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3870 element-type larger than ([UN]SIGNED-BYTE 32).
3872 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3873 * When built with the :SB-FUTEX feature, threaded builds now take
3874 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3875 for faster/more reliable mutex and condition variable support.
3876 * Incompatible change (but one you probably shouldn't have been using
3877 anyway): the interface and code for arbitrating between multiple
3878 threads in the same user session has been redesigned.
3879 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3880 error when called without an explicit environment argument.
3881 (thanks to Nikodemus Siivola)
3882 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3883 confused about their position. (thanks to Adam Warner and Gerd
3885 * bug fix: Pretty printing backquoted forms with unquotations in the
3886 argument list position of various code constructs such as LAMBDA
3887 now works correctly. (reported by Paul Dietz)
3888 * bug fix: Pretty printing unquotations no longer loses all
3889 stream position information.
3890 * optimization: performance of string output streams is now less
3891 poor for multiple small sequence writes.
3892 * optimization: performance of CSUBTYPEP in the presence of complex
3893 expressions involving CONS and NOT many times has been improved.
3894 (reported by Paul Dietz)
3895 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3897 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3898 streams for the REPL, for the debugger, and so on. (thanks to
3900 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3901 * fixed some bugs revealed by Paul Dietz' test suite:
3902 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3903 is ignored if it is too small, rather than propagating through
3904 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3905 ** extremely complex negations of CONS types were not being
3906 sufficiently canonicalized, leading to inconsistencies in
3908 ** VALUES tranformer lost derived type.
3910 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3911 * fixed a bootstrapping bug: the build process no longer assumes
3912 that the various BOOLE-related constants have the same value in
3913 host and target lisps. (noted by Paul Dietz' test suite on an
3914 SBCL binary built from CLISP)
3915 * The system can now be dynamically linked on the MIPS platform,
3916 which enables dynamic loading of foreign code from Lisp. (thanks
3917 to Ralf Baechle for discussions on the MIPS ABI)
3918 * The system now records debugging information for its own source
3919 files in a filesystem-position-independent manner, relative to
3920 the "SYS" logical host.
3921 * fixed a compiler bug: MV-LET convertion did not check references
3922 to the "max args" entry point. (reported by Brian Downing)
3923 * tweaked disassembly notes to be less confident about proclaiming
3924 some instruction as an LRA. (thanks to Brian Downing)
3925 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3926 now each have their own history, command character, and other
3927 characteristics. (thanks to David Lichteblau)
3928 * fixed some bugs revealed by Paul Dietz' test suite:
3929 ** compiler failure in compiling LOGAND expressions including a
3931 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3932 shift greater than 32.
3933 ** FLUSH-DEST did not mark blocks for type check regeneration.
3934 ** HANDLER-CASE failed to accept declarations in handler clauses
3935 in some circumstances.
3937 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3938 * New code in contrib/sb-introspect (still probably not entirely
3939 stable yet) provides some support for smart Lisp development
3940 environments like SLIME.
3941 * The conditions signalled for errors occurring when loading .fasl
3942 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3943 in a way which should help ASDF recover gracefully.
3944 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3945 stuff has been cleaned up. If you code contrib/ stuff, this might
3946 affect you, and you can look at contrib/README, contrib/STANDARDS,
3947 and/or the 0.8.4.27 diff to check.
3948 * In full calls the compiler now does not generate checks for declared
3949 argument types for all arguments.
3950 * various threading fixes
3951 ** and some experimental patches which didn't make it into
3952 the main tree for this release, but which are shipped in
3953 contrib/experimental-thread.patch as a possible fix for some
3954 failures (deadlock, spinning...) in GC-intensive multithreaded
3956 * fixed PPC build problem (source code incompatibility of different
3957 library versions): added offsetof() hackery which attempts to divine
3958 where glibc maintainers put uc_mcontext today
3959 * fixed bug 282: compiler does not trust type assertions while passing
3960 arguments to a full call.
3961 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3962 &OPTIONAL VALUES type parameter.
3963 * fix bug 214: algorithm for noting rejected templates is now more
3964 similar to that of template seletion. (also reported by rydis on
3966 * fixed bug 141b: printing backquoted information readably and prettily
3967 inserts a space where necessary.
3968 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3969 (CHARACTER 10) are now reported as errors, rather than propagated
3970 as unknown types. (reported by piso on #lisp)
3971 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3972 with values NIL and :ERROR. (thanks to Milan Zamazal)
3973 * fixed bug 191c: CLOS now does proper keyword argument checking as
3974 described in CLHS 7.6.5 and 7.6.5.1.
3975 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3976 longer raise an error; further, using a list as a for-as-arithmetic
3977 counter now raises a meaningful error.
3978 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3979 now understood by sequence creation functions such as MAKE-SEQUENCE
3981 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3982 a STRING-INPUT-STREAM.
3983 * compiler enhancement: SIGNUM is now better able to derive the type
3985 * type declarations inside WITH-SLOTS are checked. (reported by
3987 * fixed some bugs revealed by Paul Dietz' test suite:
3988 ** incorrect optimization of TRUNCATE for a positive first
3989 argument and negative second.
3990 ** compiler failure in let-convertion during flushing dead code.
3991 ** compiler failure while deriving type of TRUNCATE on an
3992 interval, containing 0.
3993 ** ASH of a negative bignum by a negative bignum count now returns
3995 ** intersection of CONS types now canonicalizes properly, fixing
3996 inconsistencies in SUBTYPEP.
3998 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3999 * incompatible change: The --disable-debugger command line
4000 option now clobbers the debugger at a more fundamental
4001 level, by redefining #'INVOKE-DEBUGGER instead of by
4002 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4003 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4004 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4005 enter the debugger REPL and then suffer recursive errors
4006 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4007 while under the new system, BREAK in --disable-debugger mode
4008 terminates the system just as an unhandled error would.
4009 * fixed compiler performance when processing loops with a step >1;
4010 * bug fix: DOCUMENTATION now retrieves generic function
4011 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4012 support has been systematized, and now supports the methods
4013 specified by ANSI, along with a default method and a method for
4014 slot documentation. (reported by Nathan Froyd)
4015 * bug fix: effective methods associated with a generic function are
4016 no longer cached over a change of that generic function's method
4017 combination. (reported by Andreas Fuchs)
4018 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4019 names a non-existent directory. (thanks to Andreas Fuchs)
4020 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4021 the PPC platform, lead to stack corruption; this has been fixed.
4022 (reported by Rainer Joswig)
4023 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4024 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4025 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4026 arithmetic in general, is now much more reliable on the PPC
4028 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4029 platform now returns the right answer.
4030 * optimization: restored some effective method precomputation in
4031 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4032 precomputation is now tunable.
4033 * optimization: compiler-internal data structure use has been
4034 reviewed, and changes have been made that should improve the
4035 performance of the compiler by about 20%.
4036 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4037 simple-base-strings and simple-bit-vectors is improved.
4038 * optimization: the optimization of 32-bit logical and arithmetic
4039 functions introduced in version 0.8.3 on the x86 has been
4040 implemented on the mips, ppc and sparc platforms; an
4041 implementation of the same facility, but for 64-bit arithmetic,
4042 has been added for the alpha.
4043 * microoptimization: the compiler is better able to make use of the
4044 x86 LEA instruction for multiplication by constants.
4045 * bug fix: in some situations compiler did not report usage of
4046 generic arithmetic in (SPEED 3) policy.
4047 * bug 145b fix: compiler used wrong type specifier while converting
4048 MEMBER-types to numeric.
4049 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4051 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4052 index argument now works properly on the Alpha platform.
4053 * bug fix: floating point exception treatment on the Alpha platform
4055 * bug fix: FILE-POSITION works much better on string input and
4056 output streams. (thanks to Nikodemus Siivola)
4057 * bug fix: many threading/garbage collection symptoms sorted.
4058 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4059 might be pseudo-atomic.
4060 * internal change: Stopping for GC is now done with signals not
4061 ptrace. GC is now done in whichever thread wanted it, instead of
4063 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4065 * bug fix: result form in DO is not contained in the implicit
4067 * incompatible change: ICR structure is changed; the value part of
4068 CONTINUATION is now called LVAR; corresponding functions are
4069 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4070 * added type deriver for ISQRT (thanks to Robert E. Brown).
4071 * bug fix: better support for loading from the command line when an
4072 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4074 * fixed some bugs revealed by Paul Dietz' test suite:
4075 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4076 ** ROUND and FROUND now give the right answer when given very
4077 small float arguments.
4078 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4080 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4081 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4082 ** LCM should return a non-negative integer.
4083 ** PARSE-INTEGER returned the index of a terminator instead of the
4084 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4085 ** PARSE-INTEGER returned an incorrect index being applied to a
4087 ** LCM with two arguments of 0 returns 0 rather than signalling
4089 ** unsigned addition of a 32-bit constant with the high bit set no
4090 longer causes an internal compiler error on the x86.
4091 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4092 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4093 with negative last argument.
4094 ** byte specifiers with zero size and position no longer cause
4095 an error during type derivation.
4096 ** bignum multiplication on the Alpha platform now returns the
4098 * porting: The system now builds on SuSE AMD64, although it still
4099 generates a 32-bit binary.
4100 * .fasl file incompatibility: The fasl file version number has
4101 been incremented (because of the changes to internal compiler
4102 data structures referred to above).
4104 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4105 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4106 more accurately, on the Darwin kernel running on PowerPC hardware.
4107 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4108 * Compiler code deletion notes now signal a condition of type
4109 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4110 an associated MUFFLE-WARNING restart.
4111 * The compiler now performs limited argument count validation of
4112 constant format strings in FORMAT, and where appropriate in ERROR,
4113 CERROR and WARN. (thanks to Gerd Moellmann)
4114 * New ASDF-INSTALL contrib can be used for automatic download and
4115 installation of third-party Lisp code from CCLAN or other sites
4117 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4118 which forces another thread to execute a function supplied by the
4120 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4121 now accept and act upon their :ELEMENT-TYPE keyword argument.
4122 (reported by Martin Atzmueller, Edi Weitz)
4123 * bug fix: FILE-POSITION now accepts position designators up to
4124 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4125 is the greater. (thanks to Patrik Nordebo)
4126 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4127 Kalle Olavi Niemitalo)
4128 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4129 printable. (reported by Eric Marsden)
4130 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4131 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4132 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4133 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4134 (thanks to Stig Sandoe)
4135 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4136 UNREAD-CHAR now correctly includes the unread character in the
4137 target sequence. (thanks to Gerd Moellmann)
4138 * bug fix in threaded builds: the system can now be suspended and
4139 resumed by shell job control with minimal disruption.
4140 * bug fixes in times and timezones >2038AD
4141 * better handling of "where is GNU make?" problem in build scripts
4142 (thanks to Nikodemus Siivola)
4143 * new optimization: inside a named function any reference to a
4144 function with the same name is considered to be a self-reference;
4145 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4146 optimization quality.
4147 * new optimization on x86: logical functions and + now have
4148 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4149 used when the result is truncated to 32 bits.
4150 * VALUES declaration is partially enabled.
4151 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4152 * fixed some bugs revealed by Paul Dietz' test suite:
4153 ** The system now obeys the constraint imposed by
4154 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4155 types form a lattice under type intersection.
4156 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4157 ** ASSOC now ignores NIL elements in an alist.
4158 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4159 and (1+ MOST-POSITIVE-FIXNUM) answers.
4160 ** The addition of a method with invalid qualifiers to a generic
4161 function does not cause an error to be signalled immediately;
4162 a warning is signalled, and the error is generated only on
4163 calling the generic function.
4164 * changed .fasl file version number, in part to add type codes for
4165 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4166 obscure ANSI requirements
4168 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4169 * fixed bug 148: failure to inline-expand a local function left
4170 garbage, confusing the compiler.
4171 * fixed bugs 3cd: structure slot readers perform type check if the
4172 slot can have an invalid value (i.e. it is either not initialized
4173 or can be written with a less specific slot writer).
4174 * bug fix: the compiler now traps array references to elements off
4175 the end of an array; previously, the bounds checking in some
4176 circumstances could go off-by-one.
4177 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4179 * type declarations for array element types now obey the description
4180 on the CLHS page "Declaration TYPE", as per discussions on
4181 sbcl-help around 2003-05-08. This means that a declaration
4182 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4183 declaration, all references to BAR will be asserted or assumed
4184 (with THE, so dependent on compiler policy) to involve objects of
4185 type FOO. Note that no such declaration is implied in
4186 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4187 * declared types of functions from the "Conditions"
4188 chapter. (reported by Paul Dietz)
4189 * bug fix: CERROR accepts a function as its first argument.
4190 * bug fix: NTH an NTHCDR accept a bignum as index
4191 arguments. (reported by Adam Warner)
4192 * optimization: character compare routines now optimize comparing
4193 against a constant character. (reported by Gilbert Baumann)
4194 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4195 argument now works properly on the MIPS platform.
4196 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4197 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4198 declared to have a functional type, does not cause an error
4200 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4201 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4202 * fixed bug: if last continuation of a deleted block has a
4203 destination, this destination should be deleted too. (reported by
4205 * fixed a bug in the bootstrap process: the host compiler's values
4206 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4207 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4208 test case from Patrik Nordebo)
4209 * improved the ability of the disassembler on the PPC platform to
4210 provide helpful disassembly notes.
4211 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4212 the class in more cases than previously.
4213 * bug fix: FILE-POSITION now understands :START and :END for
4214 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4215 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4216 8) data. (thanks to David Lichteblau)
4217 * bug fix: it is possible to add a method to a generic function
4218 without lambda list.
4219 * bug fix: reader failed to signal END-OF-FILE inside an
4220 object representation. (reported by Nikodemus Siivola)
4221 * fixed some bugs revealed by Paul Dietz' test suite:
4222 ** LAST and [N]BUTLAST should accept a bignum.
4223 ** condition slot accessors are methods.
4224 ** (VECTOR NIL) is a subtype of STRING.
4226 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4227 * minor incompatible change: some nonsensical specialized lambda
4228 lists (used in DEFMETHOD) which were previously ignored now signal
4230 * minor incompatible change: the system is now aware of the types of
4231 variables in the COMMON-LISP package, and will signal errors for
4232 most violations of these type constraints (where previously they
4233 were silently accepted).
4234 * minor incompatible change: COMPILE-FILE now uses the freedom
4235 afforded (ANSI 3.2.2.3) to use derived function types for
4236 functions defined in the same file. This also permits the system
4237 to warn on static type mismatches and function
4238 redefinition. (Currently it does not work with high DEBUG level.)
4239 * minor incompatible change: VALUES declaration is disabled.
4240 * When issuing notes, the compiler now signals a condition of type
4241 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4242 restart for use in user handlers. It is expected that the
4243 COMPILER-NOTE condition will eventually become a condition
4244 supertype to a hierarchy of note types, which will then be
4245 handleable in a similar fashion. However, at the moment, no such
4246 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4247 but it's an implementation detail, not a classification for the
4249 * Changes in type checking closed the following bugs:
4250 ** type checking of unused values (192b, 194d, 203);
4251 ** template selection based on unsafe type assertions (192c, 236);
4252 ** type checking in branches (194bc).
4253 * A short form of VALUES type specifier has ANSI meaning (it has
4254 increased the number of situations when SBCL cannot perform type
4256 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4257 keywords or constants is permissible.
4258 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4259 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4260 classes. (thanks to Antonio Martinez)
4261 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4262 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4263 argument to a pretty-print stream. Instead, it leaves any such
4264 operations to DESCRIBE-OBJECT methods.
4265 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4267 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4268 lambda lists. (thanks to David Lichteblau)
4269 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4270 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4271 (thanks to Gerd Moellmann)
4272 * fixed bug 246: increased compilation speed of long
4273 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4275 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4277 * DEFCONSTANT now throws a condition of type
4278 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4279 constant to a non-EQL value; CONTINUE and ABORT restarts
4280 respectively change and preserve the value.
4281 * fixed bug 63: The code walker, part of the implementation of CLOS,
4282 is now better at handling symbol macros.
4283 * bug fix: There is no longer an internal implementation type named
4284 CL:LENGTH. (reported by Raymond Toy)
4285 * bug fix: In macro-like defining macros/special operators the
4286 implicit block does not enclose the lambda list.
4287 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4288 enclosed in parentheses) are not suitable as type specifiers, and
4289 their use properly signals an error now.
4290 * bug fix: An argument count mismatch for a type specifier in code
4291 being compiled no longer causes an unhandled error at compile
4292 time, but signals a compile-time warning.
4293 * fixed simple vector readable printing
4294 * bug fix: DESCRIBE takes more care over whether the class
4295 precedence list slot of a class is bound before accessing it.
4296 (reported by Markus Krummenacker)
4297 * bug fix: FORMATTER can successfully compile pretty-printer format
4298 strings which use variants of the ~* directive inside.
4299 * bug fix: SEARCH now applies its TEST predicate to the elements of
4300 the arguments in the correct order. (thanks to Wolfhard Buss)
4301 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4302 in type inference. (thanks to Robert E. Brown)
4303 * bug fix: Reading in symbols with an explicit package name of ""
4304 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4305 * fixed some bugs revealed by Paul Dietz' test suite:
4306 ** NIL is now allowed as a structure slot name.
4307 ** Arbitrary numbers, not just REALs, are allowed in certain
4308 circumstances in LOOP for-as-arithmetic clauses.
4309 ** Multiple class redefinitions before slot access no longer
4310 causes a type error.
4311 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4312 association between the name and a class.
4313 ** Generic functions with non-standard method-combination and over
4314 five methods all of which return constants no longer return NIL
4315 after the first few invocations. (thanks to Gerd Moellmann)
4316 ** CALL-NEXT-METHOD with no arguments now passes the original
4317 values of the arguments, even in the presence of assignment.
4318 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4320 ** DISASSEMBLE works with closures and funcallable instances.
4321 ** ADD-METHOD now returns the generic function, not the new method.
4322 ** FIND-METHOD signals an error if the lengths of the specializers
4323 is incompatible with the generic function, even if the ERRORP
4325 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4326 which its argument is a member.
4327 ** DEFCLASS only redefines the class named by its class-name
4328 argument if that name is the proper name of the class;
4329 otherwise, it creates a new class.
4330 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4331 of the UNBOUND-SLOT condition to the name of the slot.
4332 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4333 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4334 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4335 SLOT-MAKUNBOUND in the specified fashion.
4337 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4338 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4339 cross-compilation host. As a consequence, we can now bootstrap our
4340 way up to SBCL starting with a bare gcc toolchain and human-readable
4341 source code (first the source to CLISP, then the source to SBCL).
4342 * A contributed module containing a partial implementation of the
4343 simple-streams interface has been included. (thanks to Rudi
4345 * A contributed module implementing the RFC1321 Message Digest
4346 Algorithm, known as MD5, has been included.
4347 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4348 no longer has any effect, as the code controlled by this feature
4349 has been deleted. (As far as we know, no-one has ever built using
4350 this feature, and its semantics were confused in any case).
4351 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4352 work on conditions (as required by the ANSI specification),
4353 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4354 expected behaviour on conditions. Users should note, however,
4355 that such behaviour is not required by the ANSI specification,
4356 and so use of this behaviour may render their code unportable.
4357 * fixed some bugs revealed by Paul Dietz' test suite:
4358 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4360 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4361 ** SXHASH on condition objects no longer returns NIL.
4362 ** :ALLOCATION :CLASS slots are better treated; their values are
4363 updated on class redefinition, and initforms inherited from
4364 superclasses are applied.
4365 ** REMOVE-METHOD returns its generic function argument even when
4366 no method was removed.
4367 ** SHARED-INITIALIZE now initializes the values of the requested
4368 slots, including those with :ALLOCATION :CLASS.
4369 ** ALLOCATE-INSTANCE now works on structure classes defined via
4370 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4372 ** SLOT-EXISTS-P now works on conditions, as well as structures
4374 ** MAKE-LOAD-FORM now has the required methods on
4375 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4376 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4377 keyword, and now implements the SLOT-NAMES argument.
4378 ** methods with &OPTIONAL arguments no longer allow too many
4379 arguments to be passed in the call without error.
4380 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4381 option is consistent with the required arguments of the generic
4382 function lambda list.
4383 * bug fix: REQUIRE accepts a string designator. (Thanks to
4385 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4386 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4387 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4388 * bug fix: The compiler now checks for duplicated variables in macro
4390 * bug fix: SETQ on globals returns the correct value.
4391 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4392 not a COMPILER-ERROR (followed by some other strange error on
4393 choosing the CONTINUE restart).
4394 * bug fix: make.sh and friends are now more consistent in the way that
4395 they look for GNU "make".
4397 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4398 * experimental native threads support (on x86 Linux >=2.4 only).
4399 This is not compiled in by default: you need to add :SB-THREAD to
4400 the target features. See the "Beyond ANSI" chapter of the manual
4402 * fix for longstanding nonANSIism: The old distinction between
4403 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4404 The return value from CL:FIND-CLASS is now a CLOS class, and
4405 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4406 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4407 * An interface to the MetaObject Protocol, as described in Kiczales,
4408 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4409 MIT Press, 1991, is available from the SB-MOP package.
4410 * incompatible change: the SB-PCL package should now be considered
4411 a private implementation detail, and no longer a semi-private MOP
4413 * minor incompatible change: due to rearrangement for threads, the
4414 control stack and binding stack are now allocated at arbitrary
4415 addresses instead of being hardcoded per-port. Users affected by
4416 this probably have to be doing advanced things with shared
4417 libraries, and will know who they are.
4418 * minor incompatible change: Previously, all --eval forms used were
4419 processed with READ before any of them were processed with EVAL.
4420 Now each --eval form is processed with both READ and EVAL before
4421 the next --eval form is processed. (Thus package operations like
4422 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4423 work as the user might reasonably expect.)
4424 * minor incompatible change: *STANDARD-INPUT* is now only an
4425 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4427 * minor incompatible change: Y-OR-N-P is now character-oriented,
4428 not line oriented. Also, YES-OR-NO-P now works without errors.
4429 (thanks to Antonio Martinez)
4430 * sb-aclrepl module improvements: an integrated inspector, added
4431 repl features, and a bug fix to :trace command.
4432 * Known functions, which cannot be open coded by the backend, are
4433 considered to be able to check types of their arguments. (fixing
4434 a bug report by Nathan J. Froyd)
4435 * fixed a bug in computing method discriminating functions: It is
4436 now possible to define methods specialized on classes which have
4437 forward-referenced superclasses. (thanks to Gerd Moellmann)
4438 * fixed evaluation order in optional entries (reported by Gilbert
4440 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4441 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4442 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4443 required-by-AMOP NAME argument, as well as CLASS and
4444 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4445 * fixed bug 20: DEFMETHOD can define methods using names that are
4446 not the proper names of classes to designate class specializers.
4447 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4448 Unix file descriptors, instead of blowing up. (thanks to Antonio
4450 * Garbage collection refactoring: user-visible change is that a
4451 call to the GC function during WITHOUT-GCING will not do garbage
4452 collection until the end of the WITHOUT-GCING. If you were doing
4453 this you were probably losing anyway.
4454 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4455 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4456 TYPEP the latter but not the former.
4457 * The compiler issues a full WARNING for calls to undefined functions
4458 with names from the CL package.
4459 * MAP-INTO for a vector destination is open coded. (reported by
4460 Brian Downing on c.l.l)
4461 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4462 documentation string.
4463 * fixed some bugs revealed by Paul Dietz' test suite:
4464 ** COPY-ALIST now signals an error if its argument is a dotted
4466 ** Condition slots are now accessed more correctly in the presence
4467 of multiple initargs for a given slot.
4468 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4469 exclude restarts of the same name associated with a different
4471 ** DEFCLASS of forward-referenced classes with another
4472 forward-referenced class in the superclasses list no longer
4474 ** Condition slots are now initialized once each, not multiple
4475 times. (thanks to Gerd Moellmann)
4476 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4478 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4479 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4480 arguments contain duplicated elements.
4481 ** RESTART-CASE understands local macros.
4482 ** RESTART-CASE associates exactly its own restarts with a condition.
4483 ** ENDP in safe mode checks its argument to be of type LIST.
4484 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4485 in question is unbound.
4486 ** Optimized MAKE-INSTANCE functions no longer cause internal
4487 assertion failures in the presence of duplicate initargs.
4488 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4489 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4490 propagated even in the ctor optimized implementation of
4492 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4494 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4495 * a better implementation of SXHASH on (simple) bit vectors,
4496 measured both in execution speed and in distribution of results
4497 over the positive fixnums, has been installed. Likewise, a better
4498 implementation of EQUAL for simple bit vectors is now available.
4499 * fixed CEILING optimization for a divisor of form 2^k.
4500 * fixed bug 240 (emitting extra style warnings "using the lexical
4501 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4502 by Antonio Martinez)
4503 * fixed SXHASH, giving different results for NIL depending on type
4504 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4505 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4506 variable. (found by Rolf Wester)
4507 * SBCL does not ignore type declarations for special
4508 variables. (reported by rif on c.l.l 2003-03-05)
4509 * some bug fixes in contrib/sb-aclrepl/
4510 * fixed some bugs revealed by Paul Dietz' test suite:
4511 ** a bug in the CONS type specifier, whereby the CAR and CDR
4512 types got intertwined, has been fixed;
4513 ** the type system is now able to reason about the interaction
4514 between INTEGER and RATIO types more completely;
4515 ** APPEND, [N]REVERSE and NRECONC check that those their
4516 arguments, which must be proper lists, are really so;
4517 ** An array specialized to be unable to hold elements has been
4518 implemented, as required -- yes, really -- by ANSI;
4519 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4520 on malformed property lists;
4522 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4523 * incompatible packaging change: in line with Unix convention,
4524 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4525 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4526 * REQUIRE and PROVIDE are now optionally capable of doing something
4527 useful. See the documentation string for REQUIRE.
4528 * infrastructure for a managed SBCL contrib system: contributed
4529 modules in this release include:
4530 ** the ASDF system definition facility;
4531 ** an interface to the BSD Sockets API;
4532 ** an ACL-like convenience interface to the repl;
4533 (thanks to Kevin Rosenberg)
4534 ** an implementation of ROTATE-BYTE, with efficient implementation
4536 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4537 gives a closer approximation to the right answer than previously.
4538 (thanks to Raymond Toy)
4539 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4540 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4541 optional environment arguments, as required by ANSI.
4542 * fixed bugs in other functions taking environment objects, allowing
4543 calls with an explicit NIL environment argument to be compiled
4545 * fixed bug 228: primary return values from
4546 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4547 COMPILE or FUNCTION.
4548 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4549 :TYPE will no longer signal errors on innocuous objects.
4550 * fixed bug 231b: SETQ is better at respecting type declarations in
4551 the lexical environment.
4552 * fixed a bug in DEFCLASS: classes named by symbols with no or
4553 unprintable packages can now be defined.
4554 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4555 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4556 * fixed compiler failure related to checking types of functions.
4557 (reported by Robert E. Brown)
4558 * the compiler is now much more consistent in its error-checking
4559 treatment of bounding index arguments to sequence functions: in
4560 (SAFETY 3) code, errors will be signalled in almost all cases if
4561 invalid sequence bounding indices are passed to functions defined
4562 by ANSI to operate on sequences.
4563 * fixed a bug in the build procedure: documentation of SBCL-specific
4564 packages is now preserved and available in the final Lisp image.
4565 * lifted FDEFINITION lookup out of loops in the implementation of
4566 many list operations. (thanks to Robert E. Brown)
4567 * fixed a bug in the reader: the #n# reader macro now works for
4568 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4569 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4570 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4571 E. Brown and Tony Martinez respectively)
4572 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4573 SLOT-BOUNDP: in particular, it is now able to optimize them much
4574 better, and is now not vulnerable to having packages renamed.
4575 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4576 always called when a slot is not present in an instance. (thanks
4578 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4579 longer signal an error on unreading a character following EOF on
4580 the previous constituent stream. (thanks to Tony Martinez)
4581 * fixed some bugs revealed by Paul Dietz' test suite:
4582 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4583 not just nonnegative fixnums;
4584 ** the logical bit-array operators such as BIT-AND now accept an
4585 explicit NIL for their "opt-arg" argument (to indicate a
4586 freshly-consed result bit-array);
4587 ** ELT now signals an error on an invalid sequence index in safe
4589 ** the type system is now cleverer about negations of numeric
4590 types, and consequently understands the BIGNUM and RATIO types
4592 ** the type system is now cleverer about the interaction between
4593 INTEGER and RATIO types: while bugs still remain, many more
4594 cases are accurately computed;
4595 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4596 if it is in the last clause;
4597 ** CONSTANTLY now correctly returns a side-effect-free function in
4599 ** DECLARE is no longer treated as a special-operator; in
4600 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4601 * incremented fasl file version number due to the change in the
4602 DEFSTRUCT-SLOT-DESCRIPTION structure.
4604 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4605 * minor incompatible change: code processed by the "interpreter" or
4606 EVAL now has a compilation optimization policy of (DEBUG 2)
4607 (changed from (DEBUG 1)) to improve debuggability of interactive
4608 development, and to allow the use of the debug RETURN command in
4610 * an experimental implementation of the RETURN command for the
4611 debugger has been included. (thanks to Frederik Kuivinen)
4612 * fixed bug 62: constraints were not propagated into a loop.
4613 * fixed bug in embedded calls of SORT (reported and investigated by
4615 * fixed some bugs revealed by Paul Dietz' test suite:
4616 ** printing and reading of arrays with some dimensions having
4617 length 0 (thanks to Gerd Moellmann);
4618 ** BOA constructor with &AUX argument without a default value does
4619 not cause a type error;
4620 ** CONSTANTP now returns true for all self-evaluating objects.
4622 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4623 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4624 accessors that are related by inheritance, as specified in the
4625 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4626 Valtteri Vuorikoski)
4627 * The compiler is now able to inline functions that were defined in
4628 a complex lexical environment (e.g. inside a MACROLET).
4629 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4631 * Support for the upcoming FreeBSD-5.0 release has been included.
4632 (thanks to Dag-Erling Smorgrav)
4633 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4634 effect when it is not in a toplevel context.
4635 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4636 stand a better chance of being correct. (thanks to Gerd
4638 * fixed bug in COERCE, which now signals an error on coercing a
4639 rational to a bounded real type which excludes the expected
4641 * The compiler is now able to derive types more accurately from the
4642 COERCE and COMPILE functions.
4643 * fixed bug 223: functional binding is considered to be constant
4644 only for symbols in the CL package.
4645 * fixed bug 231: SETQ did not check the type of a variable being set
4646 (reported by Robert E. Brown)
4647 * A new optimization for MAKE-INSTANCE has been included, fixing
4648 various bugs (including relating to :ALLOCATION :CLASS slots and
4649 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4651 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4652 ** As required by ANSI, LOOP now disallows anonymous collection
4653 clauses such as COLLECT I in conjunction with aggregate boolean
4654 clauses such as THEREIS (= I 1);
4655 ** LOOP now signals an error when any variable is reused in the
4656 same loop (including the potentially useful construct analogous
4657 to WITH A = 1 WITH A = (1+ A);
4658 ** IT is only a special loop symbol within the first clause of a
4659 conditional loop clause;
4660 ** LOOP with a typed iteration variable over a hashtable now
4661 signals a type error iff it should.
4662 * fixed some other bugs revealed by Paul Dietz' test suite:
4663 ** FILE-STREAM now names the class previously known as FD-STREAM;
4664 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4665 argument) no longer signals an error;
4666 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4667 of the slot symbol, rather than using the current package
4668 ((:CONC-NAME "") continues to intern the slot's name in the
4670 * incremented fasl file version number, because of the incompatible
4671 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4672 of the new implementation of DEFINE-COMPILER-MACRO.
4674 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4675 * Support for building SBCL for MIPS platforms running in
4676 little-endian mode has now been checked in, and basic
4677 functionality on said platforms verified.
4678 * minor incompatible change: PCL now records the pathname of a file
4679 in which methods and the like are defined, rather than its
4681 * minor incompatible change: TRUENAME now considers the truename of
4682 a file naming a directory to be the pathname with :DIRECTORY
4683 component indicating that directory.
4684 * minor incompatible change: a NAMED clause in the extended form of
4685 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4686 reason for the previous behaviour is unclear.
4687 * more systematization and improvement of CLOS and MOP conformance
4688 in PCL (thanks to Gerd Moellman and Pierre Mai):
4689 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4691 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4692 primary methods with no specializers;
4693 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4695 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4696 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4697 FORWARD-REFERENCED-CLASSes; error reporting on
4698 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4700 ** SXHASH on CLOS instances now uses a slot internal to the
4701 instance to return different numbers on distinct instances,
4702 while preserving the same return value through invocations of
4704 ** DEFMETHOD signals errors when methods with longer incongruent
4705 lambda lists are added to generic functions;
4706 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4707 CLASS, as specified in AMOP;
4708 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4709 on the order returned by the primary method for classes of
4710 class STANDARD-CLASS;
4711 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4712 * fixed some bugs shown by Paul Dietz' test suite:
4713 ** DOLIST puts its body in TAGBODY;
4714 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4716 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4717 value producing form;
4718 ** if more variables are given to PROGV than values, extra
4719 variables are bound and made to have no value;
4720 ** NSUBSTITUTE on list arguments gets the right answer with
4722 ** ELT signals an error of type TYPE-ERROR when the index argument
4723 is not a valid sequence index;
4724 ** LOOP signals (at macroexpansion time) an error of type
4725 PROGRAM-ERROR when duplicate variable names are found;
4726 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4727 ** FUNCALL of special-operators now cause an error of type
4729 ** PSETQ now works as required in the presence of side-effecting
4730 symbol-macro places;
4731 ** NCONC accepts any object as its last argument;
4732 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4734 ** loop-for-as-package does not require a package to be explicitely
4736 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4738 * fixed bug 166: compiler preserves "there is a way to go"
4739 invariant when deleting code.
4740 * fixed bug 172: macro lambda lists with required arguments after
4741 &REST arguments now cause an error to be signalled. (thanks to
4743 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4744 bug. (thanks to Matthew Danish)
4745 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4747 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4748 arguments are lexically rebound. (thanks to Gerd Moellmann and
4750 * fixed bug 194: error messages are now more informative when there
4751 is no primary method applicable in a call to a generic
4752 function. (thanks to Gerd Moellmann)
4753 * fixed bug in command line argument checking (thanks to Julian
4755 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4756 (thanks to Matthew Danish)
4757 * incremented fasl file version number, because of the
4758 SXHASH-related changes in the layout of CLOS data structures
4760 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4761 * minor incompatible change: The runtime (the Unix executable named
4762 "sbcl") is now much pickier about the .core files it will load.
4763 Essentially it now requires .core files to descend from the same
4764 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4765 as the runtime does. (The intent is to prevent the crashes which
4766 can occur, and which can even be reported as mysterious failures,
4767 when people patch the sources or change the build parameters
4768 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4769 sbcl and .core files.)
4770 * fixed bug: VALUES-LIST is no longer optimized away.
4771 * fixed bug 142: The FFI conversion of C string values to Lisp
4772 string values no longer conses excessively. (thanks to Nathan
4773 Froyd porting Raymond Toy's fix to CMU CL)
4774 * began to systematize and improve MOP conformance in PCL (thanks to
4775 Nathan Froyd, Gerd Moellman and Pierre Mai):
4776 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4778 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4779 ** FINALIZE-INHERITANCE is now called on class finalization;
4780 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4781 argument precedence order.
4782 * fixed bug 202: The compiler no longer fails on functions whose
4783 derived types contradict their declared type.
4784 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4785 so it can be non-toplevel.
4786 * The fasl file version number has changed (because of the new
4787 implementation of DEFMACRO).
4788 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4789 safe code, that any length requirement by their type-specifier
4790 argument is valid. The exceptions to this are described in bug
4792 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4793 functions now check the types of their inputs as required by ANSI.
4794 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4795 introduced symbol is DECLAREd to be SPECIAL.
4796 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4797 * fixed bug: :COUNT argument to sequence functions may be negative
4798 * fixed bug: body of DO-SYMBOLS may contain declarations
4799 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4800 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4801 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4802 symbol macro only once
4803 * fixed printing of call frame when argument list is unavailable
4804 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4805 * compiler no longer signals WARNING on unknown keyword
4808 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4809 * A beta-quality port to the mips architecture running Linux,
4810 based on the old CMUCL backend, has been made. It has been tested
4811 on a big-endian kernel, and works sufficiently well to be able to
4812 rebuild itself; it has not been tested in little-endian mode.
4813 * fixed an inconsistency between gencgc.c and purify.c which made
4814 dumping/loading .core files unreliable
4815 * fixed bug 120a: The compiler now deals correctly with IFs where
4816 the consequent is the same as the alternative, instead of
4817 misderiving the return type. (thanks to Alexey Dejneka)
4818 * fixed bug 113: Logical pathnames are now dumpable (the logical
4819 host is resolved at load-time, throwing an error if it is not
4821 * fixed bug 174: FORMAT's error message is slightly clearer when a
4822 non-printing character is used in a format directive.
4823 * fixed several bugs in compiler checking of type declarations, i.e.
4824 violations of the Python "declarations are assertions" principle
4825 (thanks to Alexey Dejneka)
4826 * fixed several bugs in PCL's error checking (thanks to Gerd
4828 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4830 * fixed bug in compilation of functions as first class values
4831 (thanks to Antonio Martinez-Shotton)
4832 * The compiler's handling TYPE-ERRORs which it can prove will
4833 inevitably happen at runtime has been cleaned up and corrected
4834 in several ways. (thanks to Alexey Dejneka)
4835 * improved argument type checking for various basic arithmetic
4836 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4837 lavished on them in the past that they can be compiled in many
4838 ways in different special cases
4839 * fixed bug 181: compiler checks validity of user supplied type
4841 * cleaned up code flushing in optimization: Function calls which
4842 should signal errors for safety purposes (e.g. which ANSI says
4843 should signal errors when their arguments are of incorrect type)
4844 are no longer optimized away.
4845 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4846 * incremented fasl file version number, because changes in the
4847 implementation of sequence functions like COERCE caused
4848 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4849 in old inline expansions) to become undefined. (Actually these
4850 changes were later undone, so we might very well be binary
4851 compatible with 0.7.7 after all, but leaving the version number
4852 incremented seemed like the simplest and most conservative
4855 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4856 * An alpha-quality port to the parisc architecture running Linux,
4857 based on the old CMUCL backend, has been made. This, even more so
4858 than the other backends, should be considered still a work in
4859 progress; known problems include that the Linux kernel in 64-bit
4860 mode does not propagate the correct sigcontext structure to
4861 userspace, and consequently SBCL on a parisc64 kernel will not
4863 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4864 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4865 suppressed.) Also now that the compiler is looking at declarations
4866 in the environment, it checks optimization declarations as well,
4867 and suppresses inlining when (> DEBUG SPEED).
4868 * More fixes have been made to treatment of floating point exception
4869 treatment and other Unix signals. In particular, floating point
4870 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4871 * The detection and handling of control stack exhaustion (infinite
4872 or very deeply nested recursion) has changed. Stack exhaustion
4873 detection is now done by write-protecting pages at the OS level
4874 and applies at all optimization settings; when found, a
4875 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4876 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4877 be caught using IGNORE-ERRORS.
4878 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4879 correctly when transforming recursive LABELS functions to LETs.
4880 (thanks to Alexey Dejneka)
4881 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4882 that are names of constants or global variables.
4883 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4884 alien routines with docstrings.
4885 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4886 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4888 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4889 (thanks to Eric Marsden)
4890 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4891 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4892 * Bug fix: The SPARC backend can now compile functions involving
4893 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4894 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4895 to a functions expecting a PATHNAME-DESIGNATOR.
4896 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4897 lambda lists. (thanks to Alexey Dejneka)
4898 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4899 functions so that EXPORTing the name of the class doesn't cause
4900 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4901 to Antonio Martinez for reporting this)
4902 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4903 constant-folded without failing an assertion. (thanks to Einar
4904 Floystad Dorum for reporting this)
4905 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4906 types are now dealt with more correctly by the compiler.
4907 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4908 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4909 behaviour analogous to RENAME-FILE. This puts its behaviour more
4910 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4912 * The fasl file version number has changed again. (because of the
4913 bug fix involving the names of PCL MAKE-INSTANCE functions)
4915 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4916 * bug fix: Floating point exceptions are treated much more
4917 consistently on the x86/Linux and PPC/Linux platforms.
4918 * Array initialization with :INITIAL-ELEMENT is now much faster for
4919 cases when the compiler cannot open code the array creation, but
4920 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4921 array accesses have also seen a speed increase.
4922 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4923 specified. (This was at the root of some bad interactions between
4924 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4926 * bug fix: Internal error arguments for undefined functions are now
4927 computed correctly on the PPC/Linux platform.
4928 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4929 Raymond Toy's patch for CMU CL)
4930 * Support for the Solaris 9 operating environment has been included
4931 (thanks to Daniel Merritt)
4932 * A very ugly but hopefully complete draft of the missing FFI chapter
4933 of the manual has been created by reformatting the corresponding
4934 CMU CL manual chapter into (currently very ugly and incoherent)
4935 DocBook and bringing it up to date for SBCL behavior. Thus, the
4936 manual is now essentially complete, at least by my extreme
4937 once-and-only-once standards, whereby it's acceptable to refer to
4938 the doc strings of SB-EXT functions as the primary documentation.
4939 * The fasl file version number has changed again, due to cleanup of
4940 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4941 is no longer a static symbol.)
4943 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4944 * SBCL now builds with OpenMCL (version 0.12) as the
4945 cross-compilation host; also, more progress has been made toward
4946 bootstrapping under CLISP.
4947 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4949 * bug 158 fixed: The compiler can now deal with integer loop
4950 increments different from 1; fixing this turned out also to fix
4952 * bug 169 fixed: no more bogus warnings about using lexical bindings
4953 despite the presence of perfectly good SPECIAL declarations (thanks
4954 to David Lichteblau)
4955 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4956 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4957 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4959 * bug 180 fixed: Method combination specifications no longer ignore
4960 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4961 * bug fix: Structure type predicate functions now check their argument
4962 count as they should.
4963 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4964 correctly. (thanks to Pierre Mai)
4965 * minor incompatible change: The --noprogrammer option is deprecated
4966 in favor of the new --disable-debugger option, which is very similar.
4967 (The major difference is that it takes effect at a slightly different
4968 time at startup, causing handling of errors in --sysinit and
4969 --userinit files will be affected differently.) The
4970 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4971 been added to allow this functionality to be controlled from ordinary
4972 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4973 maintainers, who might want to run non-interactive scripts to
4974 build SBCL cores which will later be used interactively.)
4975 * minor incompatible change: The LOAD function no longer, when given
4976 a wild pathname to load, loads all files matching that pathname.
4977 Instead, an error of type FILE-ERROR is signalled.
4979 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4980 * bug 147 fixed: The compiler preserves its block link/count
4981 invariants more correctly now so that it doesn't crash. (thanks
4983 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4985 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4986 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4987 no-value-for-this-character as NIL (as specified by ANSI).
4988 * HOST-NAMESTRING on physical pathnames now returns a string that is
4989 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4990 (thanks to Christophe Rhodes)
4991 * The Alpha port handles icache flushing more correctly. (thanks to
4993 * More progress has been made toward bootstrapping under CLISP. (thanks
4994 to Christophe Rhodes)
4995 * The fasl file format has changed again, because dynamic loading
4996 on OpenBSD (which has non-ELF object files) motivated some cleanups
4997 in the way that foreign symbols are transformed and passed around.
4998 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4999 is no longer treated as whitespace by the reader, but instead as
5000 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5001 |A
\7fB|, instead of A as it used to.
5003 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5004 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5005 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5006 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5007 this as of 0.7.1.45, but was left out of the previous news section
5008 (thanks to Dan Barlow)
5009 * SBCL now runs on the Solaris operating system on SPARC architectures
5010 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5011 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5012 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5013 * SPARC backend cleanups, allowing builds of cores optimized for V8
5014 and V9 SPARCS, and also emission of code targeted to a particular
5015 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5017 * SBCL is closer to bootstrapping under CLISP, thanks to various
5018 fixes by Christophe Rhodes.
5019 * The fasl file format has changed again, to allow the compiler's
5020 INFO database to support symbol macros.
5021 * The user manual (in doc/) is formatted into HTML more nicely.
5022 (thanks to coreythomas)
5023 * The system is smarter about SUBTYPEP relationships, especially
5024 those involving NOT types (including types such as ATOM which are
5025 represented internally using NOT types). Thus SUBTYPEP is less
5026 likely to return (VALUES NIL NIL) in general, and in particular
5027 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5029 * The fasl file format has changed again, because the internal
5030 representation of types now includes a new slot to support the new
5031 SUBTYPEP-of-NOT-types logic.
5032 * (not a change in the main branch of SBCL, but a related prototype
5033 which can hopefully be merged into the main branch of SBCL in the
5034 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5035 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5036 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5037 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5038 dispatch macro character combinations. (thanks to Alexey Dejneka)
5039 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5040 that superficially look like logical namestrings correctly.
5041 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5043 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5044 default supplied-p) for &optional and &key arguments. (thanks to
5047 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5048 * incompatible change: The compiler is now less aggressive about
5049 tail call optimization, doing it only when (> SPACE DEBUG) or
5050 (> SPEED DEBUG). (This is an incompatible change because there are
5051 programs which relied on the old CMU-CL-style behavior to optimize
5052 away their unbounded recursion which will now die of stack overflow.)
5053 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5054 for non-GENCGC systems has been increased to 20M (since that
5055 seems much closer to the likely performance optimum for modern
5056 systems than the old 4M value was)
5057 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5058 and *DEBUG-PRINT-LEVEL*
5059 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5060 of CMU CL's support for SPARC, and various endianness and other
5061 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5062 * new syntactic sugar for the Unix command line: --load foo.bar is now
5063 an alternate notation for --eval '(load "foo.bar")'.
5065 ** The system now detects stack overflow and handles it gracefully,
5066 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5067 optimization settings. (This is a good thing in general, and
5068 its introduction in this version should be particularly timely
5069 for anyone whose code fails because of suppression of tail
5071 ** The system now hunts for the C variable "environ" in a more
5072 devious way, to avoid segfaults when the C library version differs
5073 between compile time and run time. (thanks to Christophe Rhodes)
5074 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5075 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5076 ** The compiler no longer issues bogus style warnings for undefined
5077 classes in the same source file as the DEFCLASSes which defined
5078 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5080 ** fixes in CONDITION class precedence list for undefined function
5081 errors (thanks to Alexei Dejneka)
5082 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5083 correctly. (thanks to Dan Barlow)
5084 ** portability fixes aiming at bootstrapping under CLISP (thanks
5085 to Dave McDonald and Christophe Rhodes)
5086 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5087 ** fixes in type translation and and type inference (thanks to
5089 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5090 ** various fixes in the new ports (thanks to Dan Barlow)
5091 * several changes related to debugging:
5092 ** suppression of tail recursion, as noted above
5093 ** stack overflow detection, as noted above
5094 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5095 is now the default. (For some time encapsulation has been more
5096 reliable than the breakpoint-based :ENCAPSULATE NIL
5097 implementation, at least on X86 systems; and I just noticed that
5098 encapsulation also seems closer to the spirit of the ANSI
5101 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5103 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5104 up properly again. (There was a packaging bug in 0.7.0 which
5105 left their definitions in SB-SYS::LOAD-FOREIGN and
5106 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5107 vital for most things which interface to C-level interfaces,
5108 like extensions working with sockets or databases or
5109 Perl-compatible regexes or whatever, and the need to fix
5110 this bug is the main reason that 0.7.1 was released so
5112 ** DEFGENERIC is now choosier about the methods it redefines, so that
5113 reLOADing a previously-LOADed file containing DEFGENERICs does
5114 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5115 cycle now works as it should. (thanks to Alexey Dejneka)
5116 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5117 fixed by Christophe Rhodes. (He actually submitted this patch
5118 months ago, and I delayed until after 0.7.0.)
5119 ** Bug 111 (internal compiler confusion about runtime checks on
5120 FUNCTION types) was fixed by Alexey Dejneka.
5121 * Some internal cleanups (getting rid of variables which aren't
5122 needed now that the byte interpreter is gone) caused the fasl
5123 file format number to change again.
5125 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5126 * major incompatible change: The default fasl file extension, i.e. the
5127 default extension for files produced by COMPILE-FILE, has changed
5128 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5130 ** There are many changes in the implementation of the compiler.
5131 SBCL is now essentially a compiler-only implementation of ANSI
5132 Common Lisp. EVAL still "interprets" a few special cases, but
5133 almost all the interesting cases are handled by creating
5134 a LAMBDA expression, calling COMPILE on it, then calling
5135 FUNCALL on the result.
5136 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5137 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5138 Since the code is newer, there might still be some new bugs
5139 (though not as many as before Martin Atzmueller's fixes:-). But
5140 the new code is substantially simpler and clearer, and hopefully
5141 any remaining bugs will be simpler, less fundamental, and more
5142 fixable then the bugs in the old code.
5143 ** The revised compiler is still a little unsteady on its feet.
5145 *** The debugging information it produces (particularly the names
5146 of FUNCTION objects) is sometimes much less useful than what
5147 the old compiler produced.
5148 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5149 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5150 within a MACROLET) has been temporarily weakened.
5151 ** There are new compiler optimizations for various functions:
5152 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5153 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5154 *** the math functions TRUNCATE, FLOOR, and CEILING
5155 *** the function-of-all-trades COERCE
5156 Mostly these should be transparent, but there's one
5157 potentially-annoying problem (bug 117): when the compiler
5158 inline-expands a function and does type analysis on the result,
5159 it can create control paths which have type mismatches, and
5160 when it can't prove that those control paths aren't taken,
5161 it will issue WARNINGs about the type mismatches. This is
5162 a particular problem in practice for the new sequence functions.
5163 It's not clear how this should be fixed, and for now, a
5164 workaround is given in the entry for 117 in the BUGS file.
5165 ** (Because of the interaction between the two previous items --
5166 occasional inlining problems and new inline expansions -- some
5167 of the new sequence function optimizations won't really kick in
5168 completely until debugging information, and then inlining, are
5169 straightened out in some future version.)
5170 * minor incompatible changes:
5171 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5172 DIRECTORY no longer implicitly promotes NIL slots of its
5173 pathname argument to :WILD. In particular, when you ask for the
5174 contents of a directory (which you used to be able to do without
5175 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5176 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5177 ** changes in behavior that ANSI explicitly defines to be
5178 implementation dependent:
5179 *** The new compiler-only implementation still conforms with ANSI,
5180 but acts a little different than before. Besides the obvious
5181 changes in performance tradeoffs (that the cost per form passed
5182 to EVAL has gone up, and the cost per form executed by EVAL
5183 has gone down), the behavior of the system changes a little
5184 because there are no longer any interpreted function objects.
5185 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5186 e.g. doing COMPILE on the output of interactive DEFUN is
5188 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5190 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5191 has changed from (:CL) to NIL.
5192 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5193 e.g. #\Newline and #\Tab, don't have names specified in the
5194 ANSI Common Lisp standard, is now based on their ASCII symbolic
5195 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5196 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5197 are no longer used for output.
5198 ** changes in internal implementation constants:
5199 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5200 4 million. (If your application spends a lot of time GCing and
5201 you have a lot of RAM, you might want to experiment with
5202 increasing it even more.)
5203 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5204 However, almost all old code should still continue to work without
5205 immediate update, as SB-C-CALL is now a (deprecated) nickname
5207 ** Old operator names in the style DEF-FOO are now deprecated in
5208 favor of new corresponding names DEFINE-FOO, for consistency with
5209 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5210 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5211 internal symbols, but a few supported extensions like
5212 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5213 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5214 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5215 etc. as you get deeper into recursive calls to the debugger
5216 command loop, instead of the old "5]", "5]]", "5]]]"
5217 sequence. (I was motivated to do this when squabbles between
5218 ILISP and SBCL left me very deeply nested in the debugger. In the
5219 short term, this change will probably provoke more ILISP/SBCL
5220 squabbles, but hopefully it will be an improvement in the long run.)
5221 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5222 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5223 function, since declaiming return types involving aliens is
5224 (1) annoyingly messy to do by hand and (2) vital to efficient
5225 compilation of code which calls such functions.
5226 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5227 longer reexported by the SB-EXT package. They're solely useful
5228 for alien code, so it seems more logical that you should get
5229 them from the SB-ALIEN package, not in SB-EXT.
5230 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5231 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5232 features. Instead, the code that they used to control is always
5233 built into the system.
5234 * many other bug fixes
5235 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5236 advantage of the new EVAL-WHEN stuff and to clean them up in
5237 general, and they are now more ANSI-compliant in a number of
5238 ways. Martin Atzmueller is responsible for a lot of this.
5239 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5241 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5242 *** correct ERROR type for various file operations
5243 *** some fixes for Lisp streams
5244 *** DEFMETHOD syntax checking
5245 *** changing old weird representation of debug information as
5246 strings (which, among their other deficiencies, don't transform
5247 correctly when you rename packages, and don't change their
5248 print representation when you change things like *PACKAGE*
5249 and *PRINT-LENGTH*) to symbols and lists of symbols
5250 He also made several improvements and fixed several bugs in DESCRIBE.
5251 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5253 *** misbehavior of WRITE-STRING/WRITE-LINE
5254 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5255 and several other LOOP problems as well
5256 *** DIRECTORY when similar filenames are present
5257 *** DEFGENERIC with :METHOD options
5258 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5259 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5260 *** argument ordering in FIND with :TEST option
5261 *** mishandled package designator argument in APROPOS-LIST
5262 *** various problems in the backquote readmacro
5263 *** a bug in APROPOS
5264 *** probably some others that I'm not describing very well here,
5265 since the CVS log documents them by reference to sbcl-devel
5266 messages, and the SourceForge archives aren't working well.:-(
5267 ** Dan Barlow improved the Alpha port (and is making progress on the
5268 PPC port, for those of you who think different).
5269 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5270 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5271 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5272 continues to work on the SPARC port (for those of you in a position
5273 to look down upon our little PC-compatible boxes from a great height).
5274 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5275 and uses that copy, rather than the current dynamic value, when
5276 it's trying to decide whether to truncate output. Thus e.g.
5277 (let ((*print-lines* 50))
5278 (pprint-logical-block (stream nil)
5280 (let ((*print-lines* 8))
5281 (print (aref possiblybigthings i) stream)))))
5282 should now truncate the logical block only at 50 lines, instead of
5283 often truncating it at 8 lines, as it did before.
5284 * The doc/cmucl/ directory, containing old CMU CL documentation
5285 from the time of the fork, is no longer part of the base system.
5286 SourceForge has shut down its anonymous FTP service, and with it
5287 my original plan for distributing the old CMU CL documentation
5288 there. For now, if you need these files you can download an old
5289 SBCL source release and extract them from it.
5290 * The fasl file version number changed again, for dozens of reasons,
5291 some of which are apparent above.
5293 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5294 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5295 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5296 patch, so that DISASSEMBLE output is much nicer.
5297 * The code in the SB-PROFILE package now seems reasonably stable.
5298 I still haven't decided what the final interface should look like
5299 (I'd like PROFILE to interact cleanly with TRACE, since both
5300 facilities use function encapsulation) but if you have a need
5301 for profiling now, you can probably use it successfully with
5302 the current CMU-CL-style interface.
5303 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5304 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5305 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5306 link now returns the dangling link itself, and for similar
5307 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5308 link itself. (In these cases the old code signalled an error and
5309 looped endlessly, respectively.) Thus, DIRECTORY now works even
5310 in the presence of dangling and cyclic symbolic links.
5311 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5312 is now a supported extension again, since the consensus on
5313 sbcl-devel was that it can be useful for ordinary development
5314 work, not just for debugging SBCL itself.
5315 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5316 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5317 that currently-defined functions might be redefined later with
5318 different return types.
5319 * Hash tables can be printed readably, as inspired by CMU CL code
5320 of Eric Marsden and SBCL code of Martin Atzmueller.
5321 * better error handling in CLOS method combination, thanks to
5322 Martin Atzmueller porting Pierre Mai's CMU CL patches
5323 * more overflow fixes for >16Mbyte I/O buffers
5324 * A bug in READ has been fixed, so that now a single Ctrl-D
5325 character suffices to cause end-of-file on character streams.
5326 In particular, now you only need one Ctrl-D at the command
5327 line (not two) to exit SBCL.
5328 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5330 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5331 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5332 does the right thing.
5333 * The implementation of some type tests, especially for CONDITION
5334 types, is now tidier and maybe faster, due to CMU CL code
5335 originally by Douglas Crosher, ported by Martin Atzmueller.
5336 * Some math functions have been fixed, and there are new
5337 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5338 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5339 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5340 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5341 likely to be built into sbcl-0.7.0.)
5342 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5343 CL, ported to SBCL by Martin Atzmueller)
5344 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5345 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5346 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5347 * There's a new slam.sh hack to shorten the edit/compile/debug
5348 cycle for low-level changes to SBCL itself, and a new
5349 :SB-AFTER-XC-CORE target feature to control the generation of
5350 the after-xc.core file needed by slam.sh.
5351 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5352 COMPILE-FILE is no longer supported, so that now every function
5353 gets an entry point, so that block compilation looks a little
5354 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5355 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5356 returns the number of bytes consed since the system started,
5357 rather than the number consed since the first time the function
5358 was called. (The new definition parallels ANSI functions like
5359 CL:GET-INTERNAL-RUN-TIME.)
5360 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5361 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5362 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5363 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5364 * Fasl file version numbers are now independent of the target CPU,
5365 since historically most system changes which required version
5366 number changes have affected all CPUs equally. Similarly,
5367 the byte fasl file version is now equal to the ordinary
5370 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5371 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5372 is no longer recognized. I apologize for this, because it was
5373 listed in SB-EXT as a supported extension, but I found that
5374 its existing behavior was poorly specified, as well as incorrectly
5375 specified, and it looked like too much of a mess to straighten it
5376 out. I have enough on my hands trying to get ANSI stuff to work..
5377 * many patches ported from CMU CL by Martin Atzmueller, with
5378 half a dozen bug fixes in pretty-printing and the debugger, and
5379 half a dozen others elsewhere
5380 * fixed bug 13: Floating point infinities are now supported again.
5381 They might still be a little bit flaky, but thanks to bug reports
5382 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5383 as flaky as they were.
5384 * The --noprogrammer command line option is now supported. (Its
5385 behavior is slightly different in detail from what the old man
5386 page claimed it would do, but it's still appropriate under the
5387 same circumstances that the man page talks about.)
5388 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5389 are now supported, and enabled by default. Thus, the compiler can
5390 handle many floating point and complex operations much less
5391 inefficiently. (Thus e.g. you can implement a complex FFT
5393 * The compiler now detects type mismatches between DECLAIM FTYPE
5394 and DEFUN better, and implements CHECK-TYPE more correctly, and
5395 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5396 thanks to patches from Martin Atzmueller.
5397 * various fixes to make the cross-compiler more portable to
5398 ANSI-conforming-but-different cross-compilation hosts (notably
5399 Lispworks for Windows, following bug reports from Arthur Lemmens)
5400 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5401 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5402 fixed thanks to Pierre Mai's CMU CL patches.
5403 * fixes to keep the system from overflowing internal counters when
5404 it tries to use i/o buffers larger than 16M bytes
5405 * fixed bug 45a: Various internal functions required to support
5406 complex special functions have been merged from CMU CL sources.
5407 (When I was first setting up SBCL, I misunderstood a compile-time
5408 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5409 * improved support for type intersection and union, fixing bug 12
5410 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5411 more obscure bugs as well
5412 * some steps toward byte-compiling non-performance-critical
5413 parts of the system, courtesy of patches from Martin Atzmueller
5414 * Christophe Rhodes has made some debian packages of sbcl at
5415 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5416 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5417 stable, but are nonetheless usable. When he's ready, I'd be happy
5418 to add them to the SourceForge "File Releases" section. (And if
5419 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5420 * new fasl file format version number (because of changes in
5421 internal representation of (OR ..) types to accommodate the new
5422 support for (AND ..) types, among other things)
5424 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5425 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5427 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5429 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5430 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5431 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5432 * DESCRIBE now works on structure objects again.
5433 * Most function call argument type mismatches are now handled as
5434 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5435 know whether the function will be redefined before the call is
5436 executed. (The compiler could flag local calls with full WARNINGs,
5437 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5438 it doesn't keep track of enough information to know whether calls
5439 are local in this sense.)
5440 * Compiler output is now more verbose, with messages truncated
5441 later than before. (There should be some supported way for users
5442 to override the default verbosity, but I haven't decided how to
5443 provide it yet, so this behavior is still controlled by the internal
5444 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5445 src/compiler/ir1util.lisp.)
5446 * Fasl file format version numbers have increased again, because
5447 support for the Gray streams extension changes the layout of the
5448 system's STREAM objects.
5449 * The Gray subclassable streams extension now works, thanks to a
5450 patch from Martin Atzmueller.
5451 * The full LOAD-FOREIGN extension (not just the primitive
5452 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5453 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5454 but like most other programs, it defaults to copying the Unix
5455 environment from the original process instead of starting the
5456 new process in an empty environment.
5457 * Extensions which manipulate the Unix environment now support
5458 an :ENVIRONMENT keyword option which doesn't smash case or
5459 do other bad things. The CMU-CL-style :ENV option is retained
5460 for porting convenience.
5461 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5462 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5464 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5466 * A patch from Martin Atzmueller seems to have solved the SIGINT
5467 problem, and as far as we know, signal-handling now works cleanly.
5468 (If you find any new bugs, please report them!)
5469 * The system no longer defaults Lisp source file names to types
5470 ".l", ".cl", or ".lsp", but only to ".lisp".
5471 * The compiler no longer uses special default file extensions for
5472 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5473 seems to expect a single default extension for all compiled code,
5474 and there's no compelling reason to try to stretch the standard
5475 to allow two different extensions.) Instead, byte-compiled files
5476 default to the same extension as native-compiled files.
5477 * Fasl file format version numbers have increased again, because
5478 a rearrangement of internal implementation packages made some
5479 dumped symbols in old fasl files unreadable in new cores.
5480 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5481 many fewer weird special cases.
5482 * Bug #17 (differing COMPILE-FILE behavior between logical and
5483 physical pathnames) has been fixed, and some related misbehavior too,
5484 thanks to a patch from Martin Atzmueller.
5485 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5486 by Tim Moore, ported to SBCL by Martin Atzmueller.
5487 * Martin Atzmueller fixed several filesystem-related problems,
5488 including bug #36, in part by porting CMU CL patches, which were
5489 written in part by Paul Werkowski.
5490 * More compiler warnings in src/runtime/ are gone, thanks to
5491 more patches from Martin Atzmueller.
5492 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5495 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5497 * DESCRIBE now works on CONDITION objects.
5498 * The debugger now handles errors which arise when trying to print
5499 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5501 * The build system now uses an additional file, customize-target-features.lisp,
5502 to allow local modifications to the target *FEATURES* list. (The point of
5503 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5504 debugging features enabled, without having to worry about propagating it
5505 into everyone's system when I do a "cvs update".) When no
5506 customize-target-features.lisp file exists, the target *FEATURES* list
5507 should be constructed the same way as before.
5508 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5509 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5510 warn about behavior which is undefined under the ANSI spec. Note: This
5511 is specified by ANSI, but it's not very popular with programmers.
5512 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5513 macro in the SBCL sources for an example of a workaround which you
5514 might use to make portable ANSI-standard code which does what you want.
5515 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5516 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5517 when it's used as a non-toplevel form. (This is required in order
5518 to implement the DEFCONSTANT-EQX macro.)
5519 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5520 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5521 funny things, due to bugs in the implementation of EVAL-WHEN
5522 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5523 non-toplevel DEFCONSTANTs are uncommon.)
5524 * The core file version number and fasl file version number have been
5525 incremented, because the old noncompliant DEFCONSTANT behavior involved
5526 calling functions which no longer exist, and because I also took the
5527 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5528 * fixed bug 1 (error handling before read-eval-print loop starts), and
5529 redid debugger restarts and related debugger commands somewhat while
5531 ** The QUIT debugger command is gone, since it did something
5532 rather different than the SB-EXT:QUIT command, and since it never
5533 worked properly outside the main toplevel read/eval/print loop.
5534 Invoking the new TOPLEVEL restart provides the same functionality.
5535 ** The GO debugger command is also gone, since you can just invoke
5536 the CONTINUE restart directly instead.
5537 ** The TOP debugger command is also gone, since it's redundant with the
5538 FRAME 0 command, and since it interfered with abbreviations for the
5540 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5542 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5543 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5544 some porting work by Martin Atzmueller)
5545 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5546 with a boatload of patches which he ported to SBCL. Now that those
5548 ** The system tries to make sure that its low-priority messages
5549 are prefixed by semicolons, to help people who like to use
5550 syntax highlighting in their ILISP buffer. (This patch
5551 was originally due to Raymond Toy.)
5552 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5553 patches originally written by Raymond Toy.
5554 ** The compiler understands coercion between single-value and
5555 multiple-VALUES type expressions better, getting rid of some very
5556 weird behavior, thanks to patches originally by Robert MacLachlan
5557 and Douglas Crosher.
5558 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5559 lambda lists, thanks to a patch originally by Pierre Mai.
5560 ** The system no longer bogusly warns about "abbreviated type
5562 ** The compiler gets less confused by inlining and RETURN-FROM,
5563 thanks to some patches originally by Tim Moore.
5564 ** The system no longer hangs when dumping circular lists to fasl
5565 files, thanks to a patch originally from Douglas Crosher.
5566 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5567 undefined function error.
5568 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5569 in structure slot initforms) for now, documented workaround instead:-|
5570 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5571 * fixed bug 5: added stubs for various Gray stream functions called
5572 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5573 installed, at least appropriate type errors are generated
5574 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5575 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5576 consistently in DEFMETHOD forms.
5577 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5578 it doesn't seem to affect SBCL after all
5579 * The C runtime system now builds with better optimization and many
5580 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5582 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5584 * The system is now under CVS at SourceForge (instead of the
5585 CVS repository on my home machine).
5586 * The new signal handling code has been tweaked to treat register
5587 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5588 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5589 downstream, e.g. in debug-int.lisp, has implicit dependencies
5590 on the unsignedness of integer representation of machine words,
5591 and that caused the system to bomb out with infinite regress
5592 when trying to recover from type errors involving signed values,
5593 e.g. (BUTLAST '(1 2 3) -1).)
5594 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5595 (This was one of the bugs Peter Van Eynde reported back in July.)
5596 * The system now uses code inspired by Colin Walters' O(N)
5597 implementation of MAP (from the cmucl-imp@cons.org mailing
5598 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5599 inline the MAP operation, and there is more than one
5600 sequence argument to the MAP call (so that it can't just
5601 do ETYPECASE once and for all based on the type of the
5602 single sequence argument). (The old non-inline implementation
5603 of the general M-argument sequence-of-length-N case required
5604 O(M*N*N) time when any of the sequence arguments were LISTs.)
5605 * The QUIT :UNIX-CODE keyword argument has been renamed to
5606 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5607 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5609 * Raymond Wiker's patches to port dynamic loading from Linux to
5610 FreeBSD have been added.
5611 * The BUGS file is now more nearly up to date, thanks in large part
5612 to Martin Atzmueller's review of it.
5613 * The debugger now flushes standard output streams before it begins
5614 its output ("debugger invoked" and so forth).
5615 * The core version number and fasl file version number have both
5616 been incremented, because of incompatible changes in the layout
5618 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5619 used to not be called for a saved Lisp image.)
5620 * Martin Atzmueller's version of a patch to fix a compiler crash,
5621 as posted on sbcl-devel 13 September 2000, has been installed.
5622 * Instead of installing Martin Atzmueller's patch for the
5623 compiler transform for SUBSEQ, I deleted the compiler transform,
5624 and transforms for some similar consing operations.
5625 * A bug in signal handling which kept TRACE from working on OpenBSD
5627 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5628 away by constant folding
5629 * The system now defines its address space constants in one place
5630 (in the Lisp sources), and propagates them automatically elsewhere
5631 (through GENESIS and the sbcl.h file). Therefore, patching the
5632 address map is less unnecessarily tedious and error-prone. The
5633 Lisp names of address space constants have also been systematized.
5634 * CVS tags like dollar-Header-dollar have been removed from
5635 the sources, because they have never saved me trouble and
5636 they've been source of trouble working with patches and other
5637 diff-related operations.
5638 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5639 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5641 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5643 * The system has been ported to OpenBSD.
5644 * The system now compiles with a simple "sh make.sh" on the systems
5645 that it's supported on. I.e., now you no longer need to tweak
5646 text in the target-features.lisp-expr and symlinks in src/runtime/
5647 by hand, the make.sh takes care of it for you.
5648 * The system is no longer so grossly inefficient when compiling code
5649 involving vectors implemented as general (not simple) vectors (VECTOR T),
5650 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5651 which dares to use the various sequence functions on non-simple
5652 vectors, takes less of a performance hit.
5653 * There is now a primitive type predicate VECTOR-T-P
5654 to test for the (VECTOR T) type, so that e.g.
5655 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5656 can now be compiled with some semblance of efficiency. (The old code
5657 turned the type declaration into a full call to %TYPEP at runtime!)
5658 * AREF on (VECTOR T) is still not fast, since it's still compiled
5659 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5660 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5661 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5662 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5663 without making full calls to SUBTYPEP at runtime.
5664 (Some analogous efficiency issues for non-simple vectors specialized to
5665 element types other than T, or for non-simple multidimensional arrays,
5666 have not been addressed. They could almost certainly be handled the
5667 same way if anyone is motivated to do so.)
5668 * The changes in array handling break binary compatibility, so
5669 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5670 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5671 instead of (VALUES T T).
5672 * By following the instructions that Dan Barlow posted to sbcl-devel
5673 on 2 July 2000, I was able to enable primitive dynamic object
5674 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5675 functionality is not implemented (since it calls ld to resolve
5676 library references automatically, requiring RUN-PROGRAM for its
5677 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5678 try to resolve library references) is now supported.
5679 * The system now flushes the standard output streams when it terminates,
5680 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5681 them at several other probably-convenient times, e.g. in each pass of
5682 the toplevel read-eval-print loop, and after evaluating a form given
5683 as an "--eval" command-line option. (These changes were motivated by a
5684 discussion of stream flushing issues on cmucl-imp in August 2000.)
5685 * The source transform for TYPEP of array types no longer assumes
5686 that an array whose element type is a not-yet-defined type
5687 is implemented as an array of T, but instead punts, so that the
5688 type will be interpreted at runtime.
5689 * There is now some support for cross-compiling in make.sh: each of
5690 the phases of make.sh has its own script. (This should be transparent
5691 to people doing ordinary, non-cross-compile builds.)
5692 * Since my laptop doesn't have hundreds of megabytes of memory like
5693 my desktop machine, I became more motivated to do some items on
5694 my to-do list in order to reduce the size of the system a little:
5695 ** Arrange for various needed-only-at-cold-init things to be
5696 uninterned after cold init. To support this, those things have
5697 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5698 symbols with such names are now uninterned after cold init).
5699 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5700 fasl files for cold load.
5701 ** Remove the old compiler structure pooling code (which used to
5702 be conditional on the target feature :SB-ALLOC) completely.
5703 ** Redo the representation of some data in cold init to be more compact.
5704 (I also looked into supporting byte compiled code at bootstrap time,
5705 which would probably reduce the size of the system a lot, but that
5706 looked too complicated, so I punted for now.)
5707 * The maximum signal nesting depth in the src/runtime/ support code has
5708 been reduced from 4096 to 256. (I don't know any reason for the very
5709 large old value. If the new smaller value turns out to break something,
5710 I'll probably just bump it back up.)
5711 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5713 * Many, many bugs reported by Peter Van Eynde have been added to
5714 the BUGS list; some have even been fixed.
5715 * While enabling dynamic object file loading, I tried to make the
5716 code easier to understand, renaming various functions and variables
5717 with less ambiguous names, and changing some function calling
5718 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5719 * While trying to figure out how to do the OpenBSD port, I tried to
5720 clean up some of the code in src/runtime/. In particular, I dropped
5721 support for non-POSIX signal handling, added various comments,
5722 tweaked the code to reduce the number of compilation warnings, and
5723 renamed some files to increase consistency.
5724 * To support the new automatic configuration functionality in make.sh,
5725 the source file target-features.lisp-expr has been replaced with the
5726 source file base-target-features.lisp-expr and the machine-generated
5727 file local-target-features.lisp-expr.
5728 * fixed a stupid quoting error in make.sh so that using CMU CL
5729 "lisp -batch" as cross-compilation host works again
5731 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5733 * DESCRIBE no longer tries to call itself recursively to describe
5734 bound/fbound values, so that it no longer fails on symbols which are
5735 bound to themselves (like keywords, T, and NIL).
5736 * DESCRIBE now works on generic functions.
5737 * The printer now prints less-screwed-up representations of closures
5738 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5739 * A private symbol is used instead of the :EMPTY keyword previously
5740 used to mark empty slots in hash tables. Thus
5741 (DEFVAR *HT* (MAKE-HASH-TABLE))
5742 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5743 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5744 now does what ANSI says that it should. (You can still get
5745 similar noncompliant behavior if bang on the hash table
5746 implementation with all the symbols you get back from
5747 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5748 This breaks binary compatibility, since tests for equality to
5749 :EMPTY are wired into things like the macroexpansion of
5750 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5752 * There's now a minimal placeholder implementation for CL:STEP,
5753 as required by ANSI.
5754 * An obscure bug in the interaction of the normal compiler, the byte
5755 compiler, inlining, and structure predicates has been patched
5756 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5757 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5759 * Missing ordinary arguments in a macro call are now detected even
5760 when the macro lambda list contains &KEY or &REST.
5761 * The debugger no longer complains about encountering the top of the
5762 stack when you type "FRAME 0" to explicitly instruct it to go to
5763 the top of the stack. And it now prints the frame you request even
5764 if it's the current frame (instead of saying "You are here.").
5765 * As specified by ANSI, the system now always prints keywords
5766 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5768 * The default initial SIZE of HASH-TABLEs is now smaller.
5769 * Type information from CLOS class dispatch is now propagated
5770 into DEFMETHOD bodies, so that e.g.
5771 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5773 is now basically equivalent to
5774 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5775 (DECLARE (TYPE SINGLE-FLOAT X))
5777 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5778 operation, without having to do run-time type dispatch.
5779 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5780 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5781 * Since I don't seem to be making big file reorganizations very often
5782 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5783 is overflowing my ability to conveniently back them up), I've finally
5784 checked the system into CVS. (The CVS repository is on my home system,
5785 not at SourceForge -- putting it on SourceForge might come later.)
5786 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5787 high-level GC-NOTIFY-FOO functions send their output. (There's
5788 still very little control of where low-level verbose GC functions
5789 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5790 less than it used to -- the GC-NOTIFY-FOO functions are now under
5791 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5792 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5793 in only one place in the source code, and propagates it automatically
5794 everywhere that it's needed. Thus e.g. when I bump the version from
5795 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5796 * The C source files now include boilerplate legalese and documentation
5797 at the head of each file (just as the Lisp source files already did).
5798 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5799 to his page will be replaced with a link to his new CLiki service.
5801 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5803 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5804 * The build process now looks for GNU make under the default name "gmake",
5805 instead of "make" as it used to. If GNU make is not available as "gmake"
5806 on your system, you can change this default behavior by setting the
5807 GNUMAKE environment variable.
5808 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5809 can build without error under CMU CL.
5811 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5813 * There is now a partial SBCL user manual (with some new text and some
5814 text cribbed from the CMU CL manual).
5815 * The beginnings of a profiler have been added (starting with the
5816 CMU CL profiler and simplifying and cleaning up). Eventually the
5817 main interface should be through the TRACE macro, but for now,
5818 it's still accessed through vaguely CMU-CL-style functions and macros
5819 exported from the package SB-PROFILE.
5820 * Some problems left over from porting CMU CL to the new
5821 cross-compilation bootstrap process have been cleaned up:
5822 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5823 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5824 part when getting rid of the compiler *BACKEND* stuff.)
5825 ** The value of *NULL-TYPE* was screwed up, because it was
5826 being initialized before the type system knew the final
5827 definition of the 'NULL type. This screwed up several key
5828 optimizations in the compiler, causing inefficiency in all sorts
5829 of places. (I found it because I wanted to understand why
5830 GET-INTERNAL-RUN-TIME was consing.)
5831 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5832 PROCLAIM FTYPE information. Unfortunately this broke binary
5833 compatibility again, since now the forms output by DEFGENERIC
5834 to refer to functions which didn't exist in 0.6.3.
5835 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5836 can use the new (as of 0.6.3) transform for SOME into MAP into
5838 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5839 values to (INTEGER 0 1000000), so that the time code will no longer
5840 occasionally get blown up by Linux returning 1000000 microseconds
5841 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5842 its output conform to the ANSI spec. (Alas, this makes its output
5843 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5844 * A full call to MAP NIL with a single sequence argument no longer conses.
5845 * fixes to problems pointed out by Martin Atzmueller:
5846 * The manual page no longer talks about multiprocessing as though
5847 it were currently supported.
5848 * The ILISP support patches have been removed from the distribution,
5849 because as of version 5.10.1, ILISP now supports SBCL without us
5850 having to maintain patches.
5851 * added a modified version of Raymond Toy's recent CMU CL patch for
5852 EQUALP comparison of HASH-TABLE
5854 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5856 * The system still can't cross-compile itself with
5857 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5858 entails), but at least it can compile more of itself that way
5859 than it used to be able to, and various buglets which were uncovered
5860 by trying to cross-compile itself that way have now been fixed.
5861 * This release breaks binary compatibility again. This time
5862 at least I've incremented the FASL file format version to 2, so that the
5863 problem can be detected reliably instead of just causing weird errors.
5864 * various new style warnings:
5865 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5866 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5867 ** using the lexical binding of a variable named in the *FOO* style
5868 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5869 as specified by ANSI.
5870 * *RANDOM-STATE* is no longer automatically initialized from
5871 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5872 default behavior of the system is to repeat its behavior every time
5873 it's run. If you'd like to change this behavior, you can always
5874 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5875 old convention there was no comparably easy way to get the system to
5876 repeat its behavior every time it was run.
5877 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5878 FTYPE declarations has been removed, in favor of their ANSI
5879 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5880 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5881 the types of their sequence arguments can be determined at compile time.
5882 This is done through a new open code expansion for MAP which eliminates
5883 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5884 argument types can be determined at compile time.
5885 * The optimizer now transforms COERCE into an identity operation when it
5886 can prove that the coerced object is already of the correct type. (This
5887 can be a win for machine generated code, including the output of other
5888 optimization transforms, such as the MAP transform above.)
5889 * Credit information has been moved from source file headers into CREDITS.
5890 * Source file headers have been made more standard.
5891 * The CASE macro now compiles without complaining even when it has
5894 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5896 * (Note that the way that the PCL macroexpansions were rewritten
5897 to accommodate the change in DEFGENERIC below breaks binary
5898 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5899 not run under sbcl-0.6.2. Once we get out of alpha releases,
5900 i.e. hit release 1.0.0, we'll probably try to maintain binary
5901 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5902 and sbcl-1.4.4. Until then, however, it might be fairly common
5903 for maintenance releases to break binary compatibility.)
5904 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5906 * The reporting of unhandled signals has been changed to print some
5907 explanatory text as well as the report form. (Previously only
5908 the report form was printed.)
5909 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5910 it defines, so that the compiler no longer issues undefined function
5911 warnings for compiled-but-not-yet-loaded generic functions.
5912 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5913 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5914 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5915 section of the ANSI spec are supported.
5916 * The "" nickname for the "KEYWORD" package has been removed.
5917 The reader still handles symbol tokens which begin with a package marker
5918 as keywords, but it doesn't expose its mechanism for doing so in the
5919 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5920 * The system now issues STYLE-WARNINGs for contradictory TYPE
5921 proclamations. (Warnings for contradictory FTYPE proclamations would
5922 be nice too, but those can't be done usefully unless the type system
5923 is made smarter about FUNCTION types.)
5924 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5925 systematized, so that "*target-*.lisp is supposed to exist only on the
5926 target and imply that there's a related file which exists on the
5927 host, and *host-*.lisp is supposed to exist only on the host and imply
5928 that there's a related file which exists on the target. This involves a
5929 lot of renaming. Hopefully the acute confusion caused by the renaming
5930 will be justified by the reduction in chronic confusion..
5931 ** runtime-type.lisp -> early-target-type.lisp
5932 ** target-type.lisp -> late-target-type.lisp
5933 ** early-host-format.lisp -> early-format.lisp
5934 ** late-host-format.lisp -> late-format.lisp
5935 ** host-error.lisp -> misc-error.lisp
5936 ** early-error.lisp -> early-target-error.lisp
5937 ** late-error.lisp -> late-target-error.lisp
5938 ** host-defboot.lisp -> early-defboot.lisp
5939 ** code/misc.lisp -> code/target-misc.lisp
5940 ** code/host-misc.lisp -> code/misc.lisp
5941 ** code/numbers.lisp -> code/target-numbers.lisp
5942 ** code/early-numbers.lisp -> numbers.lisp
5943 ** early-host-type.lisp -> early-type.lisp
5944 ** late-host-type.lisp -> late-type.lisp
5945 ** host-typep.lisp -> typep.lisp
5946 ** load.lisp -> target-load.lisp
5947 ** host-load.lisp -> load.lisp
5948 ** host-disassem.lisp -> disassem.lisp
5949 ** host-insts.lisp -> insts.lisp
5950 ** byte-comp.lisp -> target-byte-comp.lisp
5951 ** host-byte-comp.lisp -> byte-comp.lisp
5952 ** host-signal.lisp -> signal.lisp
5953 ** host-defstruct.lisp -> defstruct.lisp
5954 ** late-target-type.lisp -> deftypes-for-target.lisp
5955 Furthermore, several other previously target-only files foo.lisp (e.g.
5956 hash-table.lisp and random.lisp) have been split into a target-and-host
5957 foo.lisp file and a target-only target-foo.lisp file, with their key type
5958 definitions in the target-and-host part, so that the cross-compiler will
5959 know more about target types.
5960 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5961 gone away. In their place are various *BACKEND-FOO* variables
5962 corresponding to the slots of the old structure.
5963 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5964 into the target SBCL has been fixed.
5965 * The chill.lisp system for loading cold code into a running SBCL
5967 * Support for the CMU CL "scavenger hook" extension has been removed.
5968 (It was undocumented and unused in the CMU CL sources that SBCL was
5969 derived from, and stale in sbcl-0.6.1.)
5970 * Various errors in the cross-compiler type system were detected
5971 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5972 (enabling various consistency checks). Many of them were fixed,
5973 but some hard problems remain, so the compiler is back to
5974 running without *TYPE-SYSTEM-INITIALIZED* for now.
5975 * As part of the cross-compiler type system cleanup, I implemented
5976 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5977 * I have started adding UNCROSS calls throughout the type system
5978 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5979 on cross-compiler input files will be able to go away, and various
5981 * CONSTANTP now returns true for quoted forms (as explicitly required
5984 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5986 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5987 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5988 (MAKE-LIST -1). In the longer term, it ought to become true
5989 that declarations are assertions even at SAFETY 1. For now, it's not
5990 quite true even at SAFETY 3, but it's at least more nearly true..
5991 (Note that this change seems to increases the size of the system by
5992 O(5%) and to decrease the speed of the compiler by 20% or more.)
5993 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5994 for the problem of printing dozens of lines of distracting information
5995 about low-level system machinery as part of the top stack frame
5996 on entry to the debugger when an undefined function was called.
5997 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5998 is not reset to COMMON-LISP-USER.
5999 * Compilation of stuff related to dyncount.lisp has been made conditional
6000 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6001 smaller. The various dyncount-related symbols have been moved into
6002 a new "SB-DYNCOUNT" package.
6003 * tty-inspect.lisp has been renamed to inspect.lisp.
6004 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6005 feature has gone away. (When we eventually port to other flavors of
6006 libc and/or Unix, we'll try to make the differences between flavors
6007 invisible at the user level.)
6008 * Various other *FEATURES* tags, and/or their associated conditionals,
6009 have been removed if obsolescent, or given better documentation, or
6010 sometimes given more-mnemonic names.
6012 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6014 * tidied up "make.sh" script
6015 * tidied up system directory structure
6016 * better "clean.sh" behavior
6017 * added doc/FOR-CMUCL-DEVELOPERS
6018 * many many small tweaks to output format, e.g. removing possibly-confusing
6019 trailing #\. character in DESCRIBE-INSTANCE
6020 * (EQUALP #\A 'A) no longer signals an error.
6021 * new hashing code, including EQUALP hashing
6022 * tidied up Lisp initialization and toplevel
6023 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6024 * command line argument processing
6025 * added POSIX-GETENV function to deal with Unix-ish environment variables
6026 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6027 terminating SBCL on EOF
6028 * non-verbose GC by default
6029 * There is no more "sbcl" shell script; the sbcl file is now the C
6030 runtime executable (just like CMU CL).
6031 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6033 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6034 symbol and package information as Lisp native symbol and package objects
6035 instead of strings naming symbols and strings naming packages. This way,
6036 whenever packages are renamed (as in warm init), debug information is
6037 transformed along with everything else.
6038 * tweaked the optimization policy declarations which control the building
6039 of SBCL itself. Now, among other things, the system no longer saves
6040 source location debugging information. (This helps two problems at once
6041 by reducing SBCL size and by keeping SBCL from trying to look for its
6042 sources -- which may not exist -- when reporting errors.)
6043 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6044 debugging and testing purposes
6045 * cleaned up printing, making the printer call PRINT-OBJECT for
6046 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6047 methods, giving nearly-ANSI behavior
6048 * converted almost all special variables to use *FOO* naming convention
6049 * deleted PARSE-TIME functionality, since it can be done portably
6050 * moved some files out of cold init into warm init
6051 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6053 * regularized formatting of source files
6054 * added an install.sh script
6055 * fixed ridiculous memory usage of cross-compiler by making
6056 compiler/alloc.lisp not try to do pooling unless it can hook
6057 itself into the GC of the cross-compilation host. Now the system
6058 builds nicely on my old laptop.
6059 * added :SB-ALLOC in target-features.lisp-expr
6060 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6061 was not implemented)
6062 * re-did condition handling and note reporting in the compiler. Notes
6063 are no longer handled by signalling conditions. Style warnings
6064 and warnings are handled more correctly and reported in such a way
6065 that it's easy to find one or the other in your output (so that you
6066 can e.g. figure out which of many problems caused COMPILE-FILE to
6068 * changed the severity of several compiler warnings from full WARNING
6069 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6070 compiler note reporting so that it doesn't use the condition system
6071 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6072 COMPILE-FILE command)
6073 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6074 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6075 no longer supported, since their implementation was deeply intertwingled
6076 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6077 * removed bogus "support" for compiler macros named (SETF FOO), and
6078 removed the compiler macro for SETF INFO (but only after making a fool
6079 of myself on the cmucl-imp mailing list by posting a bogus patch for
6080 DEFINE-COMPILER-MACRO..)
6081 * Compiled files containing forms which have side effects on the Lisp
6082 reader (such as DEFPACKAGE forms) are now handled more correctly.
6083 (Compiler queuing of top level lambdas has been suppressed by setting
6084 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6085 * deleted various currently-unused source files, e.g. gengc.lisp. They
6086 may be added back at some point e.g. when porting to other architectures,
6087 but until they are it's distracting to distribute them and to try to
6089 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6090 there were so many of them they're just distractions, and UNCROSS is
6091 known to be able to handle the current sources
6092 * moved PROFILE functionality into TRACE, so that it will be clear
6093 how the wrapping and unwrapping of functions when you profile them
6094 interacts with the wrapping and unwrapping of functions when you
6095 trace them. (Actually, the functionality isn't there yet, but at least
6096 the interface specification is there. Hopefully, the functionality will
6097 arrive with some future maintenance release.)
6098 * removed host-oops.lisp
6099 * changed signature of QUIT function to allow UNIX-CODE argument
6100 * fixed READ-SEQUENCE bug
6101 * tweaked verbose GC output so that it looks more like the progress
6102 output that ANSI specifies for functions like LOAD
6103 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6104 * added <http://sbcl.sourceforge.com> to the banner information printed by