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;;;; -*- coding: utf-8; -*-
changes in sbcl-1.0.23 relative to 1.0.22:
* enhancement: when disassembling method functions, disassembly
for the associated fast function is also produced.
* enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
report them.
* optimization: printing with *PRINT-PRETTY* true is now more
efficient as long as the object being printed doesn't require
special handling by the pretty printer.
* bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
now interact correctly with type declarations.
* partial bug fix: PCL detects infinite recursion during wrapper
validation. (thanks to Attila Lendvai)
* bug fix: #426; nested function calls are inlined properly.
Previously if FOO was an inline function, in calls of the form
(FOO (FOO ...)) the outer call was not inlined.
* bug fix: long long arguments passed in registers to alien
functions on PowerPC Linux and NetBSD are now handled correctly
when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
changes in sbcl-1.0.22 relative to 1.0.21:
* minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
for the shared object in the current directory, but passes the native
namestring of the designated pathname to the operation system's shared
object loading function as-it.
* minor incompatible change: --disable-debugger toplevel option now takes
effect before processing of initialization files and --eval or --load
options.
* new feature: new commandline argument: --script, which supports
shebang lines. See documentation for details. (based on work by
Kevin Reid)
* new feature: SAVE-LISP-AND-DIE can save current values of
--dynamic-space-size and --control-stack-size in the executable core,
causing it to skip normal runtime option processing. See documentation
for details. (thanks to Zach Beane)
* enhancement: inoccous calls to EVAL or generic functions dispatching
on subclasses of eg. STREAM no longer cause compiler notes to appear.
* enhancement: the system no longer resignals errors from --load and
--eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
associated with the original error to be lost. (thanks to Ariel
Badichi)
* enhancement: :DONT-SAVE keyword argument has been added to
LOAD-SHARED-OBJECT for controlling interaction with
SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
the effects of an earlier LOAD-SHARED-OBJECT call.
* bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
provided. (reported by Cedric St-Jean)
* bug fix: circularity handling in the reader did not treat raw
structure slots correctly. (reported by Cedric St-Jean)
* bug fix: SERVE-EVENT occasionally signaled an error about bogus
file descriptors when there were none.
* bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
was broken. (reporteed by Willem Broekema)
* bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
pathnames without a directory.
* bug fix: COMPILE-FILE did not warn about undefined variable
references at toplevel, and LOAD of the resulting fasl did
not signal an error.
* bug fix: functions with non-required arguments used to end up with
(SB-C::&OPTIONAL-DISPATCH ...) as their name.
* bug fix: redefining a function with non-required arguments didn't
update the system's knowledge about its call signature properly.
* bug fix: fixed #431; incompatible alien record type redefinitions
are detected and handled. (reported by Neil Haven)
* bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
Snellman)
* bug fix: on x86 and x86-64 backtraces were sometimes truncated
after alien stack frames.
* bug fix: strings passed to mk{s,d}temp lacked null termination
changes in sbcl-1.0.21 relative to 1.0.20:
* new feature: the compiler is able to track the effective type of a
generic function across method addition and removal.
* new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
appropriately typed structure slots without locking.
* new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
information like those gathered by TIME using a programming-friendly
interface.
* new feature: TIME reports time taken even if the form performs a
non-local transfer of control.
* enhancement: reduced conservativism on GENCGC platforms: on
average 45% less pages pinned (measured from SBCL self build).
* bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
mutate constant symbols or violate declaimed type of the symbol.
* bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
sleeping on the semaphore in heavily contested semaphores.
* bug fix: semaphores and condition variables were not interrupt
safe.
* bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
owned by other threads anymore.
* bug fix: FIND on lists called KEY outside the specified
subsequence. (reported by budden)
* bug fix: LOG doesn't use single-float intermediate results when
given mixed integer and double-float arguments, leading to better
precision. (reported by Bob Felts)
* bug fix: LOG with base zero returned values of inconsistent type.
changes in sbcl-1.0.20 relative to 1.0.19:
* minor incompatible change: OPTIMIZE qualities
SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
* documentation: some slot access efficiency guidelines have been
added to the user manual.
* optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
as ASSOC and MEMEBER.
* optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
to more efficient EQ-comparison versions more often.
* optimization: enhanced derivation of DOLIST iteration variable type
for constant lists.
* optimization: constant folding of simple (LIST ...) forms as DOLIST
arguments.
* optimization: runtime lookup of function definitions can be
elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
* optimization: compiler is able to derive the return type of
(AREF (THE STRING X) Y) as being CHARACTER.
* optimization: CLRHASH on empty hash-tables no longer does pointless
work. (thanks to Alec Berryman)
* optimization: REPLACE deftransforms don't punt when :START1 or
:START2 is given
* bug fix: compiling DESTRUCTURING-BIND on constant list arguments
no longer emits a code deletion note. (reported by Andrew
Gasparovic)
* bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
functions with an odd number of &OPTIONAL arguments, a &REST
argument, and one or more &KEY arguments at the call site.
* bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
arguments appeared at call sites as well.
* bug fix: fixed #425; CLOSE drops input buffers from streams, so
READ-LINE &co can no longer read from them afterwards. (reported
by Damien Cassou)
* bug fix: fixed #427: unused local aliens no longer cause compiler
breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
Halik)
* bug fix: non-local exit from a WITH-ALIEN form no longer causes
alien-stack leakage. (reported by Andy Hefner)
* bug fix: PROGV signals an error when an attempt to violate declared
type of a variable or bind a constant is made.
* bug fix: SET signals an error when an attempt to violate declared
type of a variable is made.
* bug fix: restart computation during the execution of a restart
test function no longer causes infinite recursion. (reported by
Michael Weber)
* bug fix: calling SB-COVER:REPORT with a non-directory pathname now
signals an error. (thanks to Pierre Mai)
* bug fix: EXPORT left symbol unexported in conflict situations.
(thanks to Michael Weber)
* bug fix: correctly handle name conflicts involving CL:NIL.
(thanks to Michael Weber)
* bug fix: RESOLVE-CONFLICT restart for name conflicts handles
conflicts arising from USEing package with conflicting symbols
correctly. (thanks to Michael Weber)
changes in sbcl-1.0.19 relative to 1.0.18:
* new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
warnings that go otherwise unhandled will be muffled if they are
of the type that's the value of this variable.
* optimization: stack allocation is slightly more efficient on x86
and x86-64.
* bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
where a raw slot always is initialized using the initform whose
type is not know sufficiently well a compile-time are now compiled
correctly. (reported by John Morrison)
* bug fix: compiler no longer makes erronous assumptions in the
presense of non-foldable SATISFIES types.
* bug fix: stack analysis missed cleanups of dynamic-extent
arguments in non-let-converted calls to local functions.
* improvements to the Windows port:
** adjusted address spaces for building on both Win32 and
Win64. (thanks for John Connors)
* fixed some bugs revealed by Paul Dietz' test suite:
** interval arithmetic during type derivation used inexact integer
to single-float coercions.
** arithmetic operations involving large integers and single
floats give the same results in compiled and interpreted code.
** deriving the result type of COERCE no longer signals an error
if the derived type of the second argument is a MEMBER type
containing invalid type specifiers.
** ADJOIN with constant NIL as second argument works correctly.
** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
changes in sbcl-1.0.18 relative to 1.0.17:
* minor incompatible change: SB-SPROF:WITH-PROFILING now by default
profiles only the current thread.
* minor incompatible change: changes to SYMBOL-VALUE of constants
defined with DEFCONSTANT now signal an error.
* enhancement: SB-SPROF now has support for wallclock profiling,
and is also able to profile specific threads. REPORT output
has also additional sorting options.
* enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
to Michael Weber)
* optimization: structure allocation has been improved
** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
** out of line constructors are ~10% faster.
** inline constructors are ~15% faster.
** inline constructors are capable of dynamic extent allocation
(generally on x86 and x86-64, in some cases on other platforms
as well.)
* optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
longer cons.
* optimization: file compiler is now able to coalesce non-circular
lists, non-base strings, and bit-vectors. Additionally, constants
are never referenced through SYMBOL-VALUE at runtime.
* optimization: code defining methods on PRINT-OBJECT (and other
generic functions in the COMMON-LISP package) now loads faster.
* bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
in sb-bsd-sockets.
* bug fix: if COMPILE-FILE aborts due to an unwind, the partial
fasl is now deleted. (reported by Attila Lendvai)
* bug fix: READ-LINE always returned NIL for the last line in files.
(reported by Yoshinori Tahara)
* bug fix: more accurate disassembly annotations of foreign function
calls. (thanks to Andy Hefner)
* bug fix: trimming non-simple strings and non-string string
designators when the there is nothing to trim works properly.
(thanks to James Knight)
* new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
(thanks to Travis Cross)
* fixed some bugs revealed by Paul Dietz' test suite:
** NIL is a valid function name (regression at 1.0.13.38)
** FILL on lists was missing its return value (regression at 1.0.12.27)
** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
fill pointers properly (regression at 1.0.12.23)
** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
displacement indices properly (regression at 1.0.12.23)
changes in sbcl-1.0.17 relative to 1.0.16:
* temporary regression: user code can no longer allocate closure
variable storage on stack, due to bug 419 without explicitly
requesting it. Please consult sbcl-devel for advice if you need to
use this feature in the meanwhile.
* new feature: runtime argument --control-stack-size can be used to
adjust thread default control stack size.
* enhancement: improved TIME output
** all times are reported using the measured accuracy (milliseconds
for real and GC times, microseconds for everything else.)
** processor cycle counts on x86 and x86-64.
** interpreted forms are counted for both evaluator modes.
** number of lambdas converted by the compiler is reported.
** CPU percentage report (computed from real and total run time.)
** more comprehensive run time reporting, using a condenced format
** interperted form, lambda, and page fault counts are omitted
when zero.
* optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
SPEED policies.
* optimization: APPEND is upto ~10% faster in normal SPEED policies.
* optimization: two argument forms of LAST are upto ~10% faster
in normal SPEED policies.
* optimization: NCONC no longer needs to heap cons its &REST list
in normal SPEED policies.
* bug fix: SB-FLUID build feature no longer breaks the build. (thanks
to Sidney Markowitz)
* bug fix: UNION and NUNION work with :TEST-NOT once more,
regression since 1.0.9.1. (thanks to Eric Marsden)
* bug fix: result of MAKE-ARRAY can be stack allocated - regression
since 1.0.15.36. (thanks to Paul Khuong)
* bug fix: LAST when always returned the whole list when given a bignum
as the second argument.
* bug fix: dynamic extent allocation of nested lists and vectors
could leak to otherwise accessible parts.
* bug fix: invalid optimization of heap-allocated alien variable
reference.
* bug fix: fasl header checking is less vulnerable to different
platform word lengths.
* bug fix: more correct assembler syntax for GNU binutils
2.18.50.0.4 support. (thanks to Marijn Schouten)
* bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
Andreas Franke)
* bug fix: the fopcompiler can handle LOCALLY forms (with no
declarations) successfully. (reported by Attila Lendvai)
changes in sbcl-1.0.16 relative to 1.0.15:
* minor incompatible change: revert the changes to sb-posix's error
signaling added in 1.0.14.
* minor incompatible change: change PROBE-FILE back to returning
NIL whenever we can't get a truename, as was the case before 1.0.14.
* minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
inherits from ERROR instead of just CONDITION.
* new feature: SB-INTROSPECT can provide source locations for instances
as well. (thanks to Tobian Ritterweiler)
* optimization: binding special variables now generates smaller code
on threaded platforms.
* optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
and cases where no :TEST is given but the compiler can infer that
the element to search is of type (OR FIXNUM (NOT NUMBER)).
* optimization: better LOGNOT on fixnums.
* optimization: modular arithmetic for a particular requested width
is implemented using a tagged representation unless a better
representation is available.
* fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
* bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
for wellformedness and returns a specialized vector. (reported by
Francois-Rene Rideau)
* bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
* bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
* bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
unscheduling timer at the same time as another timer fires.
* bug fix: don't reschedule timers for dead threads.
* bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
* bug fix: copying output from RUN-PROGRAM to a stream signalled
bogus errors if select() was interrupted.
* enhancement: add support for fcntl's struct flock to SB-POSIX.
changes in sbcl-1.0.15 relative to sbcl-1.0.14:
* enhancement: cleaner backtraces for interactive interrupts, as
well as other cases where the interesting frames used to be
obscured by interrupt handling frames.
* enhancement: untracing a whole package using (UNTRACE "FOO") is
now supported, and tracing a whole package using (TRACE "FOO") now
traces SETF-functions as well.
* enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
* SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
* unreadably printed representation of hash-tables now includes
weakness if any.
* bug fix: partially fixed #188: type propagation from assignments
is now more efficient.
* bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
'DOUBLE-FLOAT) are not flushable.
* bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
full address of the object, and none of the tag bits.
* bug fix: readably printing hash-tables now respects other printer
control variables. (reported by Cedric St-Jean)
* bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
keyword with MAKE-HASH-TABLE.
* bug fix: export SB-POSIX:MKSTEMP.
* bug fix: SORT was not interrupt safe.
* bug fix: XREF accounts for the last node of each basic-block as
well.
* bug fix: MAKE-INSTANCE optimizations interacted badly with
non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
* bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
create obsolete instances in the case of redefinition or
obsoletion of a superclass. (thanks to Andy Hefner)
* bug fix: Support for the Alpha architecture has been revived; it had
suffered somewhat from lack of maintenance since sbcl-1.0.
* improvements to the Windows port:
** The system detects the codepage to use at startup, instead of
using the value from the saved core. (thanks to Kei Suzuki)
changes in sbcl-1.0.14 relative to sbcl-1.0.13:
* new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
(see documentation for details.)
* revived support for OpenBSD (contributed by Josh Elsasser)
* partially fixed bug #108: ROOM no longer suffers from occasional
(AVER (SAP= CURRENT END)) failures.
* fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
bodies no longer cause a WARNING to be signalled. (reported by
Vincent Arkesteijn)
* bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
the bug in TRUNCATE.) (reported by Michael Weber)
* bug fix: SB-SPROF:REPORT no longer signals an error if there are
no samples. (reported by Andy Hefner)
* bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
no longer appear as (NIL ...) frames in backtraces.
* bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
is now actually exported from SB-EXT as documented. (reported by
Maciej Katafiasz)
* bug fix: sb-aclrepl now correctly understands how to inspect
single-floats on 64-bit platforms where single-floats are not boxed.
* bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
yet been finalized. (reported by Levente Meszaros)
* bug fix: CLOSE :ABORT T behaves more correctly on Windows.
* DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
SBCL-specific optimize qualities.
changes in sbcl-1.0.13 relative to sbcl-1.0.12:
* minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
an executable in the search path, and does so in the child
process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
been removed; it can be found in the CVS history, for somebody who
needs that search behavior (see the manual).
* minor incompatible change: compiler policy re. weakening type
checks has changed: now type checks are weakened only if SAFETY < 2
and SAFETY < SPEED.
* SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
unparsing of directory pathnames as files. Analogously,
SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
filename to parse into a directory pathname.
* enhancement: implicit generic function creation now signals a
specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
users can bind handlers for and muffle around calls to LOAD.
* enhancement: RUN-PROGRAM allows unicode arguments and environments
to be used (using the default stream external format), and allows
non-simple strings to be used. (thanks to Harald Hanche-Olsen)
* optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
strings and vectors whose element-type or simplicity is not fully
known at compile-time.
* optimization: STRING-TRIM and related functions no longer allocate
a new string when no trimming needs to be performed. These functions
are also faster than before when the input string has been declared
as a simple-string.
* optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
* optimization: READ-LINE is significantly faster for files containing
long lines.
* optimization: non-open coded uses of character comparison operators
(e.g. char=) no longer cons when called with more than one parameter
on platforms supporting dynamic-extent allocation.
* bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
* bug fix: COPY-SEQ on lists did not signal a type-error on improper
lists in safe code.
* bug fix: some sequence functions elided bounds checking when
SPEED > SAFETY.
* bug fix: too liberal weakening of union-type checks when SPEED >
SAFETY.
* bug fix: more bogus fixnum declarations in ROOM implementation
have been fixed.
changes in sbcl-1.0.12 relative to sbcl-1.0.11:
* new feature: MAKE-HASH-TABLE now experimentally accepts a
:SYNCHRONIZED argument, which makes the hash-table safe for
concurrent accesses (but not iteration.) See also:
SB-EXT:WITH-LOCKED-HASH-TABLE, and
SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
* optimization: CONCATENATE on strings is an order of magnitude faster
in code compiled with (> SPEED SPACE).
* optimization: SUBSEQ is ~50% faster on lists.
* bug fix: bug 417 fixed -- source location reporting is now more robust.
* bug fix: SUBSEQ on a list will now correctly signal an error if if
END is smaller then START.
* bug fix: SB-PROFILE will no longer report extra consing for nested
calls to profiled functions.
* bug fix: ROOM implementation had bogus fixnum declarations which
could cause type-errors when calling ROOM on large images.
* bug fix: if file compilation is aborted, the partial fasl is now
deleted, and COMPILE-FILE returns NIL as the primary value.
* bug fix: number of thread safety issues relating to SBCL's internal
hash-table usage have been fixed.
* bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
be returned from its body when the values were being returned
using unknown-values return convection and the W-P-O was wrapped
inside an UNWIND-PROTECT.
* bug fix: sb-posix should now compile again under Windows, enabling
slime to work again.
changes in sbcl-1.0.11 relative to sbcl-1.0.10:
* incompatible change: hash-table accessor functions are no longer
automatically protected by locks. Concurrent accesses on the same hash-table
from multiple threads can give inconsistent results or even corrupt the
hash-table completely. Multi-threaded applications should do their own
locking at the correct granularity. In the current implementation it is
still safe to have multiple readers access the same table, but it's not
guaranteed that this property will be maintained in future releases.
* minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
and will signal an error at runtime.
* enhancement: SB-THREAD package now exports a semaphore interface.
* enhancement: CONS can now stack-allocate on x86 and
x86-64. (Earlier LIST and LIST* supported stack-allocation, but
CONS did not.)
* enhancement: nested lists can now be stack allocated on
platforms providing stack allocation support.
* enhancement: dynamic-extent support has been extended to support
cases where there are multiple possible sources for the stack
allocated value.
* optimization: RELEASE-MUTEX no longer needs to perform a syscall
if the mutex is uncontested on Linux.
* bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
as specified by the CLHS. (thanks to Tobias Rittweiler)
* bug fix: NaN comparison now works on x86-64.
* bug fix: CLOSE :ABORT T on a stream with pending output now
works.
* bug fix: instances of non-standard metaclasses using standard
instance structure protocol sometimes missed the slot type checks
in safe code.
* bug fix: known functions can be inlined in high-debug code.
changes in sbcl-1.0.10 relative to sbcl-1.0.9:
* minor incompatible change: the MSI installer on Windows no longer
associates .lisp and .fasl files with the installed SBCL.
* minor incompatible change: :UNIX is no longer present in *FEATURES*
on Windows. (thanks to Luis Oliviera)
* new feature: SB-CLTL2 contrib module now implements
FUNCTION-INFORMATION. (thanks to Larry D'Anna)
* optimization: scavenging weak pointers is now more efficient,
requiring O(1) instead of O(N) per weak pointer to identify
scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
* optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
method bodies using constant slot-names when the first argument is
a specializer parameter for the method.
* optimization: SLOT-VALUE &co are now ~50% faster for variable slot
names, when the class of the instance is a direct instance
STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
as slow as the constant slot-name case.)
* optimization: member type construction is now O(N) instead
of O(N^2).
* optimization: UNION and NUNION are now O(N+M) for large
inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
EQUALP.
* enhancement: DEFINE-MODIFY-MACRO lambda-list information is
now more readable in environments like Slime which display it.
(thanks to Tobias C. Rittweiler)
* bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
was able to infer the correct argument type for the object on which
the CAS operation was being performed.
* bug fix: copy propagation interfered with parallel assignment
semantics in local calls. (reported by Paul Khuong)
* bug fix: the signed modular fixnum shift compiled to wrong code on
x86 and x86-64. (spotted by a slight modification to some of
PFD's random tests)
changes in sbcl-1.0.9 relative to sbcl-1.0.8:
* minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
* enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
is called.
* enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
and generic function now print the object identity for anonymous
instances. (thanks to Attila Lendvai)
* enhancement: as an extension to MOP, SBCL now supports SETF of
STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
(thanks to Attila Lendvai)
* enhancement: sb-cover has an alternate annotation mode which puts
the form annotations at the car of the form, instead of annotating
it completely. The benefit of this mode is that it shows better
which forms were instrumented by the compiler.
* bug fix: new compiler transforms for MEMBER and ASSOC were affected
by printer control variables. (reported by Dan Corkill)
* bug fix: system leaked memory when delayed output was performed by
the OS in smaller chunks then expected. (thanks to David Smith)
* bug fix: system leaked memory when file streams were not closed
properly.
* bug fix: large objects written to slow streams that were modified
after the write could end up with the modified state written to
the underlying file descriptor.
* bug fix: multiple threads operating in parallel on the same stream
could cause buffer-overflows.
* bug fix: source location information is stored correctly
(broken since 1.0.6). This bug would generally show up as the
Slime debugger highlighting the wrong form when the sldb-show-source
command was used.
* bug fix: Branch forms are again annotated as branches in the sb-cover
annotations.
* bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
on x86-64. (reported by Gregory Vanuxem)
* bug fix: EQUALP could return wrong results for structures with raw
slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
word). (reported by Vjacheslav Fyodorov)
* bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
by Pierre Mai)
changes in sbcl-1.0.8 relative to sbcl-1.0.7:
* enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
atomic compare-and-swap operations on threaded platforms.
* enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
allows assigning a global minimum value to optimization qualities
(overriding proclamations and declarations).
* enhancement: closed over variables can be stack-allocated on x86
and x86-64.
* performance bug fix: GETHASH and (SETF GETHASH) are once again
non-consing.
* optimization: slot definition lookup is now O(1). This speeds up
eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
* optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
* optimization: ASSOC and MEMBER can now be open-coded for all
combinations of keyword arguments when second argument is constant
and SPEED >= SPACE. In other cases a specialized version is
selected.
* bug fix: using obsoleted structure instances with TYPEP and
generic functions now signals a sensible error.
* bug fix: threads waiting on GET-FOREGROUND can be interrupted.
(reported by Kristoffer Kvello)
* bug fix: backtrace construction is now more careful when making
lisp-objects from pointers on the stack, to avoid creating bogus
objects that can be seen by the GC.
* bug fix: defaulting of values in contexts expecting more than 7
variables now works on x86-64. (reported by Christopher Laux)
* bug fix: modifications to packages (INTERN, EXPORT, etc) are now
thread safe.
* bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
as the property-list of a symbol.
* bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
situations requested, are once again file-compileable. (reported
by Sascha Wilde)
changes in sbcl-1.0.7 relative to sbcl-1.0.6:
* MOP improvement: support for user-defined subclasses of
SB-MOP:SPECIALIZER has been enhanced. The experimental interface
function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
the expansion of DEFMETHOD, is responsible for generating a form
which creates a list of specializers when evaluated. Additional
functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
debugging and introspective support.
* minor incompatible change: the (unsupported) spinlock interface
has changed: free spinlock now has the value NIL, and a held spinlock
has the owning thread as its value.
* enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
for details.
* enhancement: name of a socket-stream is now "a socket" instead of
"a constant string".
* enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
* enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
* enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
for generic functions. (Thanks to Tobias C. Rittweiler)
* optimization: bignum printing speed has been improved by 20-40%
(depending on the bignum size.)
* bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
on Linux.
* bug fix: the cache used by the CLOS to store precomputed effective
methods, slot offsets, and constant return values is now thread and
interrupt safe.
* bug fix: generic function dispatch function updating is now thread
and interrupt safe (in the sense that the known issues have been
fixed.)
* bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
* bug fix: interning EQL-specializers is now thread and interrupt safe.
* bug fix: asdf systems with dependencies to the SB-POSIX or
SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
* bug fix: interrupt safety of applicable method computation has been
improved.
changes in sbcl-1.0.6 relative to sbcl-1.0.5:
* new contrib: sb-cover, an experimental code coverage tool, is included
as a contrib module.
* optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
significantly faster.
* optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
produce more efficient code on x86-64 if the compiler can determine
that (+ INDEX <constant>) does not require a bounds check and FOO
has an element type at least 8 bits wide.
* enhancement: a new, experimental synchronous timeout facility is
provided. Refer to SB-SYS:WITH-DEADLINE for details.
* enhancement: when a symbol name conflict error arises, the
conflicting symbols are always printed with a package prefix.
(thanks to Kevin Reid)
* enhancement: stepping is now once again supported on the SPARC and
MIPS platforms. (It is also now more likely to work on CheneyGC
builds on the PPC.)
* enhancement: sb-sprof can now also track and report accurate call
counts.
* bug fixes: the treatment of non-standard subclasses of
SB-MOP:SPECIALIZER is more correct.
* incompatible change: PURIFY no longer copies the data from the
dynamic space into the static and read-only spaces on platforms
that use the generational garbage collector
* bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
interrupt safe.
* bug fix: GC race condition occasionally resulting in crashes with
the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
fixed.
* bug fix: &ENVIRONMENT variables in macro lambda lists can now be
declared ignored.
* bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
a STYLE-WARNING to be signalled (regression from 1.0.4.)
* bug fix: an asynchronous interrupt could previously leave the
system running with GC inhibited.
* bug fix: a DECLARE form evaluated at top-level now causes an error
rather than silently (or verbosely) returning NIL.
* bug fix: trying to dissassemble functions compiled at high DEBUG could
result in a error being signalled due to source form lookup errors.
(reported by Peter Graves)
changes in sbcl-1.0.5 relative to sbcl-1.0.4:
* incompatible change: removed writer methods for host-ent-name,
host-ent-addresses -- changing the values did not update the DNS
information anyway.
* minor incompatible change: changed experimental JOIN-THREAD interface
* documentation: the manual now lists reader and writer methods
in class slot documentation sections. (thanks to Richard M Kreuter)
* documentation: unwinding from asyncronous events has been
documented as unsafe.
* documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
in multithreaded application code.
* optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
platforms. (thanks to James Anderson for the optimization hint)
* optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
more cases.
* optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
variants no longer cons.
* optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
their NOT- variants no longer cons.
* optimization: EQUAL hash tables no longer use SXHASH for objects
of all data types, but instead use an EQL hash for types for which
EQUAL is the same as EQL.
* optimization: the non-inlined generic versions of AREF and (SETF AREF)
are significantly faster.
* optimization: new STRING-OUTPUT-STREAM implementation is much
faster for large outputs and conses 30% less on average.
* enhancement: XREF information is now collected for references made
to global variables using SYMBOL-VALUE and a constant argument.
* enhancement: SIGINT now causes a specific condition
SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
* bug fix: FILE-POSITION used to signal an error in some cases where
ANSI requires it to return NIL.
* bug fix: ADJUST-ARRAY is now interrupt-safe.
* bug fix: adding and removing fd-handlers is now interrupt-safe.
* bug fix: inlined calls to C now ensure 16byte stack alignment on
x86/Darwin.
* bug fix: bad type declaration in the CLOS implementation has
been fixed. (reported by James Anderson)
* bug fix: incorrect ROOM reporting on x86-64 has been fixed.
(thanks to Lutz Euler)
* bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
required by the CLHS. (reported by Samium Gromoff)
* bug fix: dead unbound variable references now signal an error.
(reported by Marco Monteiro)
* bug fix: / with an unused value was being deleted in safe code.
(thanks to Marco Monteiro and Kevin Reid)
* bug fix: number of characters that can be written onto a single
line in a file is unlimited.
* bug fix: some GC deadlocks caused by asynchronous interrupts have
been fixed by inhibiting interrupts for when GC is disabled.
* bug fix: some interrupt safety issues with GETHASH, (SETF
GETHASH), CLRHASH and REMHASH have been fixed.
* bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
specifier no longer causes infinite recursion.
* bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
* bug fix: an &environment argument with the correct variable information
is passed to macros that are expanded during byte compilation.
(reported by Samium Gromoff)
* bug fix: a logic error was causing the hash function for bignums to
have excessive amounts of collisions. (reported by Faré Rideau)
* bug fix: modifying the contents of an array could change the return
value of SXHASH on that array, which is only allowed for strings
and bit vectors. (bug introduced in 0.9.16)
* improvement: the x86-64/darwin port now passes all tests (except
for the debugger tests) but should still be considered
experimental until this is fixed.
* improvement: a style-warning is signaled for CASE (etc) clauses with
duplicate keys. (thanks to Kevin Reid)
* improvement: macos/x86 and macos/x86-64 now use mach exception
handlers for dealing with illegal instructions (for trapping and
error handling) and memory protection violations (for GC).
changes in sbcl-1.0.4 relative to sbcl-1.0.3:
* new platform: experimental support for x86-64/darwin (MacOS).
* incompatible change: the thread-safe (on most platforms) getaddrinfo
and getnameinfo sockets functions are used instead of gethostbyaddr
and gethostbyname, on platforms where the newer functions are available.
As a result, the ALIASES field of HOST-ENT will always be NIL on these
platforms.
* change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
don't print the startup banner, but behave as if --noinform was passed
as a command line argument. (thanks to Kevin Reid)
* new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
* optimization: code using alien values with undeclared types is much faster.
* optimization: the compiler is now able to open code SEARCH in more cases.
* optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
* bug fix: using standardized COMMON-LISP special variables as loop
variables no longer signals bogus package lock violations. (reported
by Eric Marsden)
* bug fix: declaring local loop variables to be of a range-limited type
such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
(reported by Andras Simon)
* bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
bugs remain on x86-64.)
* bug fix: the #= and ## reader macros now interact reasonably with
funcallable instances.
* bug fix: type-checks for function arguments were compiled using the
compiler policy settings of the wrong lexical environment (in 1.0.2
and 1.0.3).
* bug fix: SHADOW accepts characters as string designators, as required
by the spec (thanks to Eric Marsden)
* bug fix: fixed GC safety issues when foreign functions are called with
non-base strings as arguments
* bug fix: more consistent error output for fatal-compiler-warnings, like
reader errors
* bug fix: functions with proper names were showing up as NIL in
backtraces (reported by Edi Weitz, regression in 1.0.2)
changes in sbcl-1.0.3 relative to sbcl-1.0.2:
* new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
* optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
produce more efficient code on the x86 if the compiler can determine
that (+ INDEX <constant>) does not require a bounds check and FOO
has an element type at least 8 bits wide.
* bug fix: references to undefined variables are handled the same way
in toplevel forms as in the normal compiler
* bug fix: the build scripts again work with non-bash /bin/sh (thanks
to Magnus Henoch)
* bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
(thanks to Jon Buller)
* improvement: faster compilation times for complex functions
* improvement: added readlink support to SB-POSIX (thanks to Richard
M Kreuter)
changes in sbcl-1.0.2 relative to sbcl-1.0.1:
* improvement: experimental support for mach exception handling on
x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
to use.
* improvement: support for GBK external format.
(thanks to Chun Tian (binghe))
* improvement: the debugger now displays variables that have been closed
over, in code compiled with (DEBUG 2) or higher
* improvement: support for executable cores on NetBSD (thanks to
Richard Kreuter)
* new feature: added a RESTART-FRAME debugger command
* new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
be used to provide an implementation for FILE-POSITION on Gray streams
(thanks to Eric Marsden)
* new feature: add syslog, openlog and closelog support to SB-POSIX
(thanks to Richard Kreuter)
* optimization: the function call overhead in code compiled with
a high DEBUG optimization setting is significantly
* bug fix: an error is signaled for attempts to use READ-SEQUENCE
for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
(thanks to Tony Martinez)
* bug fix: the initforms for DEFMETHOD &AUX parameters are only
evaluated once (reported by Kevin Reid)
* bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
works again (thanks to Kilian Sprotte)
* bug fix: an error is signaled for tagbodies with duplicate tags
(thanks to Stephen Wilson)
* bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
* bug fix: Win32 port can now handle foreign code unwinding Lisp
stack frames from alien callbacks.
* bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
* bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
65k pages (thanks to David Woodhouse)
* bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
changes in sbcl-1.0.1 relative to sbcl-1.0:
* new platform: FreeBSD/x86-64, including support for threading.
* new feature: the compiler stores cross-referencing information
about function calls (who-calls), macroexpansion (who-macroexpands)
and special variables (who-binds, who-sets, who-references) for code
compiled with (< SPACE 3). This information is available through the
sb-introspect contrib.
* new feature: users may subclass SEQUENCE, and have instances of
these classes interoperate with standard Common Lisp functions if
a number of methods are defined. (This feature is experimental
and the interface subject to change based on feedback from SBCL
users and the general community)
* improvement: sb-sprof traces call stacks to an arbitrary depth on
x86/x86-64, rather than the previous fixed depth of 8
* improvement: another pthread back-end of mutex "pthread-futex".
* bug fix: non-ascii command-line arguments are processed correctly
(thanks to Yaroslav Kavenchuk)
* bug fix: non-required arguments were not passed correctly when a method
defined using DEFMETHOD was called from a mop-generated method using
CALL-NEXT-METHOD (reported by Pascal Costanza)
* bug fix: recursion is now permitted in accessors through
SLOT-UNBOUND. (reported by Pascal Costanza)
* bug fix: an error was signaled at startup if the HOME environment
variable was defined, but had an empty value (reported by Peter Van Eynde)
* bug fix: non ordinary lambda-list keyword in ordinary lambda lists
signal a PROGRAM-ERROR, not a BUG.
* bug fix: SB-POSIX:READDIR works when built with large file support.
* bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
to Marco Monteiro)
* enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
for better automatic indentation support. (thanks to Matt Pillsbury)
* optimization: loading generic functions no longer takes O(n^2) time,
proportional to the amount of methods in the generic function
(reported by Todd Sabin and Jeremy Brown)
* optimization: the FIND and POSITION family of sequence functions
are significantly faster on arrays whose element types have been
declared.
* improvements to the Windows port:
** Intermittent heap corruption problems have been fixed. (thanks
to Alastair Bridgewater)
** TRACE :ENCAPSULATE NIL (and function end breakpoints)
work on Windows.
** Lisp is able to unwind foreign exception frames from alien
callbacks. (thanks to Alastair Bridgewater)
changes in sbcl-1.0 relative to sbcl-0.9.18:
* improvement: experimental support for threading on FreeBSD/x86.
(thanks to NIIMI Satoshi)
* improvement: runtime option --dynamic-space-size can be used
to set the size of the dynamic space reserved on startup.
* improvement: floating point modes in effect are now saved in
core, and restored on startup.
* improvement: GET-INTERNAL-REAL-TIME now reports the time since
startup, not time since first call to GET-INTERNAL-REAL-TIME.
* improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
threads are not running after *SAVE-HOOKS* have run.
* improvement: writes to CLOS instance slots are type-checked in code
compiled with (SAFETY 3)
* improvement: floating-point exception handling on FreeBSD (thanks to
NIIMI Satoshi)
* improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
(thanks to Zach Beane)
* improvement: support for files larger than 2GB for CL streams and SB-POSIX
on Linux/x86
* improvement: added support for the Shift-JIS external format.
(contributed by NIIMI Satoshi)
* improvement: callbacks are supported on Linux/PPC. (thanks to
Joshua Ross)
* bug fix: compiler bug triggered by a (non-standard) VALUES
declaration in a LET* was fixed. (reported by Kaersten Poeck)
* bug fix: file compiler no longer confuses validated and already
dumped structurres. (reported by Kaersten Poeck)
* bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
fill-pointer signals a type-error as required. (thanks to
Lars Brinkhoff)
* bug fix: disassemly of funcallable instances works.
* bug fix: single stepping on PPC.
* bug fix: fix thread-safety problems in the type system (generally
manifesting as nonsensical errors like "STRING is a bad type specifier
for sequences" or "The value 1 is not of type FIXNUM")
* bug fix: version components are handled correctly in TRANSLATE-PATHNAME
(reported by Josip Gracin)
* bug fix: an error is signaled for attempts to displace arrays with
incompatible element types (thanks to Mario Mommer)
* bug fix: more correct handling of wide characters in debug info
(bug reported by Attila Lendvai and fixed by Juho Snellman)
* optimization: method calls with &OPTIONAL or &KEY arguments are faster
and don't cause extra consing
* optimization: MAP and MAP-INTO are significantly faster on vectors
whose elements types have been declared.
* Improvements to SB-SPROF:
** Support for allocation profiling
** Reduced profiling overhead, especially for long profiling runs
* Improvements to the Windows port:
** floating point exceptions are now reported correctly.
** stack exhaustion detection works partially.
** more accurate GET-INTERNAL-REAL-TIME.
** better RUN-PROGRAM behaviour in case of errors in the child
process.
** PROBE-FILE now simplifies pathnames correctly.
** DIRECTORY now works correctly with :WILD-INFERIORS.
** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1st 1970 (although time timezone data will be unreliable).
** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
* enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
Max-Gerd Retzlaff)
* bug fix: two potential GC deadlocks affecting threaded builds.
* bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
returns T (reported by Anton Kazennikov)
* bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
with non-variable places
* bug fix: remove a race condition in the setting of
funcallable-instance functions, this should make threaded CLOS
code more stable against memory faults.
* bug fix: corruption of specials when unbinding is interrupted by an
asynchronous unwind (reported by Hannu Koivisto)
* improvement: the debugger will now also display local variables that
are only used once, for code compiled with a DEBUG optimization quality
of 2 or higher.
changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
* feature: weak hash tables, see MAKE-HASH-TABLE documentation
* incompatible change: External-format support for FFI calls. The
SB-ALIEN:C-STRING no longer implies an ASCII
external-format. Instead the string is subject to external-format
conversion. Additionally return values of type SB-ALIEN:C-STRING
are by default of type (SIMPLE-ARRAY CHARACTER), not
SIMPLE-BASE-STRING. For an alien type that behaves like the old
SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
:ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
* incompatible change: SB-EXT package no longer contains the
following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
*GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
*ERROR-PRINT-LINES*
* incompatible change: the single-stepper is no longer available
on Alpha, Mips and Sparc platforms.
* minor incompatible change: the direct superclasses of
SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
not (STANDARD-OBJECT FUNCTION). This makes the
class-precedence-lists of GENERIC-FUNCTION and
STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1.4.4.5.
* minor incompatible change: the default stream external format on
non-unicode SBCL is no longer detected from the locale, but is always
ISO-8859-1
* new feature: Add a version of evaluator that uses an interpreter instead
of the compiler. EVAL still uses the compiler by default, to switch it
to use the interpreter, set the value of the variable
SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
* minor incompatible change: the single-stepper REPL has been merged
with the normal debugger (see the "Stepping" heading of the debugger help
for more details). The debugger command STEP will no longer switch
to the single-stepper REPL.
* bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
for a type now works.
* bug fix: loading of default sysinit file works. (thanks to Leonid
Slobodov)
* bug fix: better detection of circularities in the file-compiler.
(reported by Marco Monteiro)
* bug fix: the CL pathname functions now work with files that have
non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
* bug fix: The :PTY argument for RUN-PROGRAM will now work on
systems with Unix98 pty semantics.
* bug fix: ASDF-INSTALL will now work with bsd tar.
* bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
Gracin).
* bug fix: timers expiring in dead threads no longer cause a
type-error (reported by Paul "Nonny Mouse").
* bug fix: thanks to more lightweight single-stepper instrumentation,
code compiled with (DEBUG 3) will compile and execute significantly faster,
and will have more accurate type-inferencing than before
* bug fix: SLOT-VALUE optimizations are no longer done on method parameters
whose bindings are modified
* improvements to the win32 port (thanks to Yaroslav Kavenchuk):
** bug fix: arguments to RUN-PROGRAM are escaped correctly
** replace dummy implementations of CL:MACHINE-INSTANCE and
CL:SOFTWARE-VERSION with proper version
changes in sbcl-0.9.16 relative to sbcl-0.9.15:
* feature: implemented the READER-METHOD-CLASS and
WRITER-METHOD-CLASS portion of the Class Initialization Protocol
as specified by AMOP.
* incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
no longer exists.
* optimization: faster LOGCOUNT implementation on x86 and x86-64
(thanks to Lutz Euler)
* optimization: hashing of general arrays and vectors has been
improved. (reported by Any Fingerhut)
* enhancement: SB-INTROSPECT is now able to find definitions of
profiled functions. (thanks to Troels Henriksen)
* enhancement: compiler-macro expansion applies now to FUNCALL forms
as well, allowing compiler-macros for SETF-functions to expand.
* enhancement: step-instrumentation no longer wraps known
single-value functions with multiple-value context, allowing
better type inference.
* fixed bug #337: use of MAKE-METHOD in method combination now works
even in the presence of user-defined method classes. (reported by
Bruno Haible and Pascal Costanza)
* fixed bug #339(c): if there are applicable methods not part of any
long-form method-combination group, call INVALID-METHOD-ERROR.
(reported by Bruno Haible)
* fixed bug #361: the :FUNCTION initarg in the protocol for
initialization of methods can now be used to override
internally-produced optimized functions. (reported by Bruno
Haible)
* bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
system-provided lambda expression no longer cause warnings about
unbound #:|pv-table| symbols.
* bug fix: improved the handling of type declarations and the
detection of violations for keyword arguments with non-constant
defaults.
* bug fix: potentially erronous calls to PATHNAME and
MERGE-PATHNAMES were being flushed in some cases.
(reported by Richard Kreuter)
* bug fix: compiled calls to TYPEP were mishandling obsolete
instances. (reported by James Bielman and Attila Lendvai)
* bug fix: format strings with ~> without matching ~< no longer
trigger an AVER, but signal an understandable error instead.
(reported by Antonio Martinez)
* bug fix: specifying an output-file without a pathname-type for
COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
of input-file instead of "fasl". (reported by Robert Dodier)
* bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
(reported by James Y Knight).
* bug fix: compiler-macros-function did not consider the environment
argument for shadowing by local functions.
* bug fix: compiler-macros expansion was inhibited by local INLINE
declarations.
* bug fix: inline expansions of known functions were subject to
step-instrumentation in high debug policies, leading to problems
with type-inference.
* bug fix: compiler failed to differentiate between different CONS
types in some cases.
* bug fix: fixed input, output and error redirection in RUN-PROGRAM
for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
* bug fix: #368: incorrect use of expressed vs. upgraded array
element type.
* bug fix: #306a: more precise unions of array types.
* thread-safety improvements:
** CONDITION-WAIT could return early on Linux, if the thread was
interrupted and subsequently continued with SIGCONT.
** STABLE-SORT and ADJUST-ARRAY were not reentrant.
changes in sbcl-0.9.15 relative to sbcl-0.9.14:
* added support for the ucs-2 external format. (contributed by Ivan
Boldyrev)
* minor incompatible change: pretty printing of objects of type
(cons symbol) is, in the default pprint-dispatch-table, now
sensitive to whether the symbol satisfies FBOUNDP. (thanks to
Marcus Pearce)
* minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
called later in a class's lifetime, possibly as late as when the
first instance of the class is created. Previously,
SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
class became finalizeable.
* fixed bug: FILE-POSITION sometimes returned inconsistent results
for multibyte external-format streams. (thanks to "vbzoli")
* fixed bug: CHANGE-CLASS would fail to preserve the values of slots
with :ALLOCATION :CLASS inherited from superclasses of the
original class.
* fixed bug: anonymous classes can now be created using the :NAME
initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
* fixed bug: core-files saved with :EXECUTABLE T can again be
executed when SBCL_HOME isn't set. (reported by James Knight)
* fixed bug: toplevel LOCALLY forms with declarations could
occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
* fixed bug: printing from several different threads using different
values of *print-case* could cause invalid output, due to
some internal special variables of the printer not being bound
thread-locally (reported by Max Mikhanosha)
* fixed bug: SPECIALIZER metaobjects (including anonymous classes
and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
(reported by Pascal Costanza)
* fixed bug: FINALIZE-INHERITANCE is called from
REINITIALIZE-INSTANCE on classes when the class has previously
been finalized, as required by AMOP.
* minor code generation optimizations:
** better register allocation in CLOS dispatching functions
** overflow detection when coercing signed bytes to fixnums on x86-64
** is now implemented with one IMUL instruction instead of three shifts
** more efficient bit-vector access on x86 and x86-64
** more efficient access to raw structure slots on x86 and x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
return its argument.
changes in sbcl-0.9.14 relative to sbcl-0.9.13:
* feature: thread support on Solaris/x86, and experimental thread support
on OS X/x86.
* feature: SBCL now tries to signal a STORAGE-CONDITION when running out
of heap.
* feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
default method for SLOT-UNBOUND.
* minor incompatible change: prevent the user from specializing the
new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
somewhat counter to the intent of the protocol, I (CSR) think, and
additionally it just doesn't work in SBCL as currently
implemented, thanks to optimizations (that are always valid for
the other three SLOT-VALUEish functions, but not for the setter).
* minor incompatible change: the :SB-LDB feature is now enabled by
default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
the low-level debugger.
* enchancement: RUN-PROGRAM is now able to extract the file-descriptor
from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
down to an SB-SYS:FD-STREAM, allowing direct communication in
more cases. Temporary files and pipes are still used as a fallback
strategy.
* thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
on the non-reentrant C functions localtime(3) and gmtime(3).
* bug fix: global optimization policy was not visible in LOCALLY and
MACROLET forms.
* bug fix: class objects can be used as specializers in methods.
(reported by Pascal Costanza)
* bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
with a type error. (reported by blitz_ on #lisp)
* bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
failed with a type error. (reported by Pascal Bourguignon)
* bug fix: merging pathnames against defaults with :DIRECTORY
starting with '(:RELATIVE :BACK) should preserve the :BACK.
(reported by James Y Knight)
* bug fix: saving large (>2GB) cores on x86-64 now works
* bug fix: a x86-64 backend bug when compiling (setf aref) with a
constant index and a (simple-array (signed-byte 32)) array
* bug fix: NAME-CHAR on an invalid symbol no longer signals an
error (patch by Robert J. Macomber)
* feature: TIME now displays the amount of run-time spent in GC
* bug fix: The debugger now does a better job of respecting
(PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
workaround for bug 403.)
* bug fix: floating point exception handling now works on FreeBSD
(thanks to NIIMI Satoshi)
* fixed some bugs revealed by Paul Dietz' test suite:
** MISC.641: LET-conversion were not supposed to work in late
compilation stages.
* improvements to the Win32/x86 port:
** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
changes in sbcl-0.9.13 relative to sbcl-0.9.12:
* new feature: source path information is generated for macro-expansion
errors for use in IDE's like Slime (thanks to Helmut Eller)
* bug fix: calls to the compiler no longer modify *RANDOM-STATE*
* bug fix: compiler does not loop forever on an invalid type in
TYPEP.
* improvement: compilation of most CLOS applications is significantly
faster
* optimization: added a limited bytecode compiler for simple toplevel
forms, speeding up compilation and FASL loading
* bug fix: the statistical profiler now properly distinguishes anonymous
functions
changes in sbcl-0.9.12 relative to sbcl-0.9.11:
* minor incompatible change: in sbcl-0.9.11 (but not earlier
versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
into subclasses of the finalized class. Now user calls to
FINALIZE-INHERITANCE finalize just the one class, and calls by the
system return before any subclasses are finalized.
* minor incompatible change: The reader no longer ignores errors
regarding non-existent packages in #+ and #- feature tests.
* new feature: command line options --no-sysinit, --no-userinit to
inhibit loading the corresponding init files
* new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
for sending data through UDP sockets (thanks to François-René Rideau)
* minor incompatible change: SIGPIPE is ignored and "Broken pipe"
error is signalled instead (thanks to François-René Rideau)
* minor incompatible change: Error signalling behaviour of lexical
operations violating package locks has changed slightly. Refer to
documentation on package locks for details.
* enhancement: EVAL can process IF-expressions without resorting to the
compiler.
* bug fix: Some operations involving SIN, COS, or TAN weren't being
constant-folded properly due to missing out-of-line functions.
(reported by Mika Pihlajamäki)
* bug fix: LISTEN sometimes returned T even in cases where no data was
immediately available from the stream
* fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
were reversed. (reported by Levente Mészáros)
* fixed bug: Tests for the (VECTOR T) type gave the wrong answer
when given a vector displaced to an adjustable array. (reported
by Utz-Uwe Haus)
* bug fix: derivation of float boundaries from numbers outside the
appropriate float range (reported by John Wiseman)
* bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
list.
* bug fix: precomputing cache entries for generic functions with
some subclasses of specializers as yet invalid does not attempt to
fill a cache line with a negative offset. (reported by Levente
Mészároz)
* improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
allow condition class objects as arguments to DOCUMENTATION and
(SETF DOCUMENTATION); only find and set documentation for
structure names for the STRUCTURE doc-type. (suggested by Gary
King)
* improvements to the Win32/x86 port:
** (user-homedir-pathname) and default initialization file
locations now know about the user's "Documents and Settings"
directory (thanks to Yaroslav Kavenchuk)
** run-program is implemented (thanks to Mike Thomas)
** sockets support (thanks to Timothy Ritchey)
** better backtrace support (thanks to Alastair Bridgewater)
** sb-grovel supported
** asdf-install and sb-posix work somewhat
** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
* improvements to the Solaris/x86 port:
** works on Solaris 11/Solaris Express
** floating-point exception handling support
** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
* fixed some bugs revealed by Paul Dietz' test suite:
** REMOVE-METHOD returns its generic function argument even when
the method is not one of the generic functions' methods.
** objects declared as MEMBER types can be admissible arguments to
structure accessors.
** printing characters should simply be printed by the FORMAT ~:C
directive.
** compiler failure when compiling functions with hairy constant
defaults for optional parameters.
** compiler produces wrong code when MAYBE-INLINE-expanding a
function, which is already optimized.
changes in sbcl-0.9.11 relative to sbcl-0.9.10:
* new platform: experimental support for SBCL x86/Darwin, including
MacOS X 10.4.5 on Intel.
* new feature: Unicode character names are now known to the system
(through CHAR-NAME and NAME-CHAR).
* new feature: the filesystem location of SBCL's core file is
exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
* minor incompatible change: the contrib modules SB-POSIX and
SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
this change is to make it easier to distribute
location-independent binaries.
* bug fix: as implied by AMOP, standardized classes no longer have
slots named by external symbols of public packages. (reported by
Pascal Costanza)
* optimization: calling functions via constant symbols -- as in
(FUNCALL 'FOO) -- is now roughly as efficient as calling them
via the function object as in (FUNCALL #'FOO).
* optimization: on x86 and x86-64, the calling convention for the
case of dealing with an unknown number of values has been altered
to be friendlier to the prediction heuristics implemented,
particularly with reference to CALL and RET pairing. (thanks to
Alastair Bridgewater)
* optimization: on x86, the code for access to thread-local symbol
values and binding/unbinding of thread-local symbols is smaller.
(thanks to Alastair Bridgewater)
* enhancement: CONSTANTP is now able to determine constantness of
more complex forms, including calls to constant-foldable standardized
functions and some special forms beyond QUOTE.
* fixed bug: occasional GC crashes on Solaris/x86
* optimization: x86-64 supports stack allocation of results of simple
calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
* enchancement: the PROCESS-INPUT and -OUTPUT streams created by
SB-EXT:RUN-PROGRAM can be used for both character and byte IO
(thanks to James Knight)
* fixed bug: CL:LISTEN always returns NIL at end of file, as required
by the standard (thanks to Stephen Compall)
changes in sbcl-0.9.10 relative to sbcl-0.9.9:
* new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
be used for bundling the runtime and the core file into one
executable binary. This feature is not currently supported on all SBCL
platforms. (thanks to James Bielman and NIIMI Satoshi)
* new feature: a generational or ephemeral garbage collector is now
the default on the PowerPC platform (both Linux and Darwin). The
old Cheney (stop and copy) collector is a build-time option.
(thanks to Cyrus Harmon, after Raymond Toy)
* minor incompatible change: the method by which SBCL finds its
contributed modules has changed; it no longer relies on symbolic
links from an $SBCL_HOME/systems directory, but searches directly
in the subdirectories of $SBCL_HOME.
* enhancement: the dynamic heap size on the Linux/PPC platform is
markedly larger, even using the older Cheney garbage collector.
* fixed bug #399: full call to DATA-VECTOR-REF in accesses to
certain complicated string types. (reported by Gary King)
* fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
* fixed bug: DOCUMENTATION on structures no longer signals an
error if no structure type of the right name exists. (reported by
Glenn Ehrlich)
* fixed bug: compiled calls to MAKE-INSTANCE where there is an
applicable non-standard primary or :AROUND method on
INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
no longer cause unbound variable errors. (reported by Kevin Reid)
* fixed bug: metacircle resolution in cases where methods have slots
added before the slots from STANDARD-METHOD. (reported by Jean
Bresson)
* fixed bug: the Power PC assembly code for calling into lisp
sometimes computed its return address wrongly (depending on the
15th bit of the address, fixed at link time). This used to
manifest itself in a segmentation violation while building PCL.
(reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
many others over the years)
* fixed bug: ROOM no longer reports silly numbers for stack usage if
the stack pointer (treated as a signed integer) is negative.
(thanks to Peter van Eynde)
changes in sbcl-0.9.9 relative to sbcl-0.9.8:
* new platform: experimental support for the Windows operating
system has been added. (thanks to Alastair Bridgewater)
* fixed several bugs in and robustified the PPC FFI (including
callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
* bug fix: allow non-simple string symbol names (reported by Paul
Dietz)
* bug fix: interrupt handling on NetBSD (thanks to Richard M
Kreuter)
* bug fix: saving a core corrupted callbacks on x86/x86-64
* bug fix: closed a loophole in metacircularity detection and
grounding in the PCL implementation of CLOS.
* bug fix: TRUENAME on "/" no longer returns a relative pathname.
(reported by tomppa on #lisp)
* bug fix: clear the direction flag on Lisp -> C transitions, as
required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
(reported by Andrej Grozin and Hendrik Maryns)
* optimization: major improvements to GC efficiency on GENCGC platforms
* optimization: faster implementation of EQUAL
* optimization: emit more efficient opcodes for some common
immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
* optimization: several other minor code-generation improvements on x86-64
* fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
changes in sbcl-0.9.8 relative to sbcl-0.9.7:
* minor incompatible change: (SETF CLASS-NAME) and (SETF
GENERIC-FUNCTION-NAME) are generic functions once more (reverting
the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
by ANSI as a generic function, and for consistency (SETF
GENERIC-FUNCTION-NAME) is treated likewise.
* fixed bug #233.b: make constraint propagation notice when a variable
value is changed after it is referenced but before it is used
* fixed bug #296: no more arbitrary behaviour from filenames with
odd characters as --load arguments. (reported by Adam Warner)
* fixed bug #390: :CHARACTER-SET pathname components now work as
expected. (reported by Tim Daly Jr)
* fixed bug #391: complicated :TYPE intersections in slot
definitions no longer cause an error in PCL internals.
* fixed bug #392: plugged a hole in the obsolete-instance protocol.
* bug fix: FILE-STRING-LENGTH is now external-format sensitive,
returning the number of octets which would be written to the
file-stream. (thanks to Robert J. Macomber)
* bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
arguments to the internal stream functions. (thanks to David
Lichteblau)
* bug fix: stack exhaustion is now handled on the x86/SunOS
platform. (thanks to Daisuke Homma)
* bug fix: more accurate ROOM results on GENCGC platforms
* optimization: improved type inference for arithmetic-for
index variables in LOOP
* optimization: faster floating-point SQRT on x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
** DOCUMENTATION returns NIL instead of "" for method combinations
that don't have a docstring

changes in sbcl-0.9.7 relative to sbcl-0.9.6:
* minor incompatible change: (SETF CLASS-NAME) and (SETF
GENERIC-FUNCTION-NAME) are no longer generic functions, and
therefore are not customizeable by user code (as seems to be at
least permitted and maybe required by AMOP). As a consolation,
however, the SBCL implementation of these functions now calls
REINITIALIZE-INSTANCE as specified by AMOP.
* bug fix: slot-definition documentation is propagated as per ANSI
7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
argument, as do eslotd initialization methods. (from Pascal
Costanza's "Closer" project)
* bug fix: REINITIALIZE-INSTANCE on generic functions calls
COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
specified by AMOP.
* bug fix: it is now possible to have more than one subclass of
STANDARD-GENERIC-FUNCTION without causing stack overflow.
(reported by Bruno Haible, Pascal Costanza and others)
* bug fix: the dependent update protocol now works for generic
functions. (thanks to Gerd Moellmann; reported by Bruno Haible
and Pascal Costanza)
* bug fix: condition-class instances corresponding to
DEFINE-CONDITION forms are now created eagerly. (reported by
Kalle Olavi Niemitalo on comp.lang.lisp)
* bug fix: floating point printing is more accurate in some
circumstances. (thanks to Simon Alexander)
* bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
merged with *DEFAULT-PATHNAME-DEFAULTS*.
* bug fix: callbacks on OS X now preserve stack-alignment.
(thanks to Cyrus Harmon)
* enhancement: the x86-64 disassembler is much better at
disassembling SSE instructions. (thanks to Lutz Euler)
* enhancement: CHECK-TYPE on a variable now allows type-inference
(thanks to Vincent Arkesteijn)
* optimization: improved performance of EUC-JP external format.
(thanks to NIIMI Satoshi)
* optimization: performance improvements to IO on file streams of
:ELEMENT-TYPE CHARACTER
* optimization: much faster memory allocation on x86-64
* optimization: faster garbage collections (latency and throughput)
on gencgc
* optimization: faster bignum subtraction and division on x86 and x86-64
(thanks to Lutz Euler)
* optimization: more accurate type-inference for loops that use a
floating point index variable or a negative step.
changes in sbcl-0.9.6 relative to sbcl-0.9.5:
* bug fix: add a workaround to SBCL looping infinitely at startup on
Linux kernels with apparently buggy implementations of personality().
(thanks to Svein Ove Aas)
* bug fix: Unicode symbols are correctly printed in LDB backtraces
(thanks to David Lichteblau)
* bug fix: local bindings shadow global symbol macros for
macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
* optimization: non-open coded uses of numeric comparison operators
(e.g. >) no longer cons when called with more than one parameter
on platforms supporting dynamic-extent allocation.
* enhancement: saving cores with foreign code loaded is now supported
on MIPS/Linux in addition to the previously supported platforms.
* bug fix: FIND-RESTART now tests for activity, not applicability when given
a restart object as identifier. (reported by Helmut Eller for CMUCL)
* bug fix: division by zero in sb-sprof when no samples were collected
* bug fix: a race when a slow to arrive sigprof signal killed sbcl
* bug fix: asdf-install uses CRLF as required by the HTTP spec.
(thanks to Alexander Kjeldaas)
* new feature: ignoring the return values of destructive functions
like NREVERSE signals a compile-time style-warning.
(thanks to Kevin Reid)
* new feature: the alignment of alien structure fields can be
explicitly specified. (thanks to Cyrus Harmon)
* bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
and dump core on SIGQUIT
* threads
** incompatible change: threads do not inherit values of specials
from their parents (see manual)
** bug fix: threads stacks belonging to dead threads are freed by the
next exiting thread, no need to gc to collect thread stacks anymore
** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
** bug fix: dynamic variable and thread start related gc lossage
** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
suspended for gc
* fixed some bugs revealed by Paul Dietz' test suite:
** SUBTYPEP is slightly more accurate on heinously complicated
CONS types where some of the members have uncertain (in the
NIL, NIL sense) type relationships to each other.
* GENCGC
** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
no longer purified unless :PURIFY T is explicitly specified.
** Non-purified cores are significantly smaller than before
changes in sbcl-0.9.5 relative to sbcl-0.9.4:
* new feature: timers based on Zach Beane's excellent timer package
* added support for the following external formats: koi8-u,
x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
* incompatible change: a threaded SBCL will no longer revert to
non-threaded mode on non-NPTL systems, but refuse to start entirely.
* bug fix: interrupts are disabled until startup is complete; no
more sigsegvs when receiving a signal to soon
* optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
platforms
* bug fix: add a workaround for the memory randomization features in
Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
workaround will only be in effect on systems with the proc filesystem
mounted.
* bug fix: printing objects of type HASH-TABLE signals a
PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
Faré Rideau)
* bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
have been running for over 50 days. (reported by Gilbert Baumann)
* bug fix: the logic for getting names of functions gets less
confused when confronded with alternate-metaclass
funcallable-instances. (reported by Cyrus Harmon)
* bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
consistent, even on internal alternate-metaclass objects.
* bug fix: flush closure information collected by physical
environment analysis prepass before the main pass. (bug reported
by Vasile Rotaru)
* bug fix: compiler pack phase does not modify a hashtable, which is
iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
* bug fix: backquote does not optimize (LIST* x y) to CONS when x
may be expanded. (reported by Alexander <malishev> on c.l.l)
* bug fix: no more style-warnings when compiling code using LAST
under high-SPEED low-SPACE settings. (reported by David Wallin
aka froog on #lisp)
* fixed some incompatibilities between SBCL's MOP and the MOP
specified by AMOP:
** the METAOBJECT class is now implemented;
** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
STANDARD-OBJECT, as required;
** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
now compatible (as required by VALIDATE-SUPERCLASS); there
remains a consistency requirement over the presence or absence
of the FUNCTION class in the superclass list of finalized
classes; see the manual for more details;
** the :AROUND method for COMPUTE-SLOTS on
FUNCALLABLE-STANDARD-CLASS now honours the primary method's
requested slot ordering.
* threads
** bug fix: parent thread now can be gc'ed even with a live
child thread
** bug fix: binding a special with PROGV to no value is not
the same as that symbol not having been bound (thanks to
Hannu Koivisto)
** bug fix: binding specials is thread safe (thanks to
Hannu Koivisto)
** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
and SB-SPROF do not die with 'no handler for signal XX in
interrupt_handle_now(..)' anymore
** bug fix: WITH-TIMEOUT works with multiple running threads
* fixed some bugs revealed by Paul Dietz' test suite:
** ENSURE-GENERIC-FUNCTION should take a method class object for
the :method-class keyword argument.
changes in sbcl-0.9.4 relative to sbcl-0.9.3:
* new port: the Solaris operating system on x86 processors is now
mostly supported, though some rough edges in the environment
remain. (thanks to Daisuke Homma)
* enhancement: SBCL on MIPS platforms now has a much larger dynamic
space for its heap. (thanks to Thiemo Seufer)
* optimization: SBCL on MIPS platforms now supports dynamic-extent
closures. (thanks to Thiemo Seufer)
* minor incompatible change: eof selects abort in the debugger.
* minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
*DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
is disabled.
* minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
deprecated, and will go away in a future revision of SBCL.
* minor incompatible change: GC-ON and GC-OFF are no longer
implemented with a counter, it does not matter how many times gc
is switched on or off
* bug fix: discriminating functions for generic function classes
with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
make invalid assumptions about method precedence order. (reported
by Bruno Haible)
* bug fix: TRUNCATE now correctly signals division by zero on MIPS
platforms. (thanks to Thiemo Seufer)
* bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
* bug fix: correct pathname printing with printer escaping is on.
(thanks to Kevin Reid)
* bug fix: complex VOP definitions in "user-space" no longer trigger
package locks. (reported by Zach Beane)
* fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
for funcallable-instance functions, and is no different from
regular LAMBDA.
* bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
characters in the current readtable. (reported by Nicholas Neuss)
* bug fix: SUBTYPEP on various CONS types returns more a more
accurate acknowledgment of its certainty.
* optimizations: REMOVE-DUPLICATES now runs in linear time on
lists in some cases. This partially fixes bug 384.
* flush all standard streams before prompting in the REPL and the
debugger.
* bug fix: signal handling and triggering gc do not conflict
directly anymore, in particular a high frequency sb-sprof does
not prevent gc from running
* bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
approximation for timezone and DST information between the
universal time epoch and the smallest negative 32-bit time_t.
* bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
year 1899 so long as the encoded time is non-negative.
* bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
the correct answer for non-constant rotate amounts when performing
an inline 32-bit rotation.
* threads
** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
there is only one thread in the session
** bug fix: memory leak for streams created in one thread and
written to in another
** bug fix: lockup when compiled with gcc4
** bug fix: race that allows the gc to be triggered when gc is
inhibited
** bug fix: one less memory fault in INTERRUPT-THREAD, again
** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
queue is full
** bug fix: finished threads are gc'ed properly
* fixed some bugs revealed by Paul Dietz' test suite:
** CALL-NEXT-METHOD signals an error (in safe code) when the call
has arguments with a different set of applicable methods from
the orignal arguments.
** The type error thrown by MAP now has a correct expected-type
cell.
** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
name a compiled function.
** Three MISC tests where a large bignum was improperly coerced to
a float that couldn't represent that bignum during type
derivation were fixed.
** SUBTYPEP can now handle types involving the negation of a
list-form FUNCTION type.
** SUBTYPEP also now handles certain COMPLEX type specifiers such
as (COMPLEX (AND RATIO (NOT FIXNUM))).
** READ-BYTE and WRITE-BYTE no longer take stream designators.
changes in sbcl-0.9.3 relative to sbcl-0.9.2:
* New feature: Experimental support for bivalent streams: streams
opened with :element-type :default now allow character and binary
(unsigned-byte 8) I/O
* Support for the koi8-r external format. (thanks to Ivan Boldyrev)
* Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
to Zach Beane)
* bug fix: no more highly sporadic "couldn't check whether ~S is
readable" when reading a stream and an interrupt hits in the middle
of a select system call
* compiler better recognizes complex arrays (reported by Eduardo
Muñoz)
* bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
for variables on SBCL built with linkage-tables. (reported by Luis
Oliveira)
* various error reporting improvements.
* optimizations: LOGNOR on fixnums is improved in the MIPS backend.
(Thanks to Thiemo Seufer)
* bug fix: nested reader invokations work correctly
* bug fix: it is possible to have simultaneous references to foreign
code and foreign data with the same name.
* threads
** added x86-64 support
** incompatible change: the threading api now works with thread
objects instead of thread ids
** bug fix: threads are protected from signals and interruption when
starting up or going down
** bug fix: a race where an exiting thread could lose its stack to gc
** bug fix: don't halt on infinite error in threads if possible
** fixed numerous gc deadlocks introduced in the pthread merge
** bug fix: fixed thread safety issues in read and print
** bug fix: debugger doesn't hang on session lock if interrupted at
an inappropriate moment
** bug fix: run-program is now thread safe(r)
** bug fix: inner with-recursive-lock no longer releases the mutex
* fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
* fixed some bugs revealed by Paul Dietz' test suite:
** TYPE-ERRORs from signalled by COERCE now have DATUM and
EXPECTED-TYPE slots filled.
** MULTIPLE-VALUE-SETQ always returns the primary value of the
values form.
** MAKE-CONDITION accepts classes as type-designators.
** COMPILE may never return NIL.
** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
range before calling Unix time functions
changes in sbcl-0.9.2 relative to sbcl-0.9.1:
* numerous signal handling fixes to increase stability
* Support for EUC-JP external format. (thanks to NIIMI Satoshi)
* minor incompatible change: we now correctly canonize default
initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
as per the MOP, rather than the historical (INITARG INITFUNCTION
INITFORM). (reported by Bruno Haible)
* new feature: WITH-COMPILATION-UNIT now accepts a non-standard
:SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
for more information.
* TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
pathname is a directory pathname.
* SB-SPROF now works (more) reliably on non-GENCGC platforms.
* dynamic space size on PPC has been increased to 768Mb. (thanks to
Cyrus Harmon)
* SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
:METACLASS argument in addition to a class name. (reported by
Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
* RESTART-CASE can now be wrapped around CALL-METHOD forms.
(reported by Bruno Haible; patch from Gerd Moellmann)
* bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
Sascha Wilde)
* bug fix: more cleanups to the floating point exception handling on
x86-64 (thanks to James Knight)
* bug fix: the compiler does not try to constant fold calls of
COERCE and BIT-* functions when they return freshly constructed
objects. (reported by Nikodemus Siivola and Paul Dietz)
* optimization: improved the MIPS versions of generic (in the
generic sense) arithmetic routines. (thanks to Thiemo Seufer)
* optimization: direct conversion of (unsigned-byte 32) to floats on
the PowerPC platform.
* optimization: structure instances with raw slots now use less
memory, and probably show better memory locality. (thanks to
David Lichteblau)
* optimization: DYNAMIC-EXTENT declarations for lists and closures
are treated as requests for stack allocation on the x86-64,
Alpha-32, PPC and SPARC platforms.
* contrib improvement: it's harder to cause SOCKET-CLOSE to close()
the wrong file descriptor; implementation of SOCKET-OPEN-P.
(thanks to Tony Martinez)
* threads
** gcing a dead thread can no longer lead to lockups
** threads block signals until they are set up properly
** errno is no longer shared by threads
** interrupt-thread restores the eflags register on x86
** fixed some lockups due to gc/thread interaction
* fixed some bugs revealed by Paul Dietz' test suite:
** invalid dotted lists no longer raise a read error when
*READ-SUPPRESS* is T
** signal an error if a symbol that names a declaration is used
as the name of a type, or vice versa
** allow using the (declare (typespec var*)) abbreviation for
(declare (type typespec var*)) with all type specifiers
** circularity detection works properly with PPRINT-LOGICAL-BLOCK
** always return NIL from PPRINT-POP when OBJECT is NIL
** don't signal errors when pretty-printing malformed LABELS,
FLET or MACROLET forms
** declarations in a DOLIST body are also in scope for the
DOLIST return-form
** COMPILE-FILE accepts all pathname designators as INPUT-FILE
and OUTPUT-FILE
** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
always evaluated
changes in sbcl-0.9.1 relative to sbcl-0.9.0:
* fixed cross-compiler leakages that prevented building a 32-bit
target with a 64-bit host compiler.
* fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
opened with :IF-EXISTS :OVERWRITE.
* fixed bug 281: error for an invalid qualifier in a short-form method
combination method is not signalled until the faulty method is called.
* bug fix: iteration variable type inferrer failed to deal with open
intervals. (reported by Alan Shields)
* bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
"frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
or more runtime options were provided to the sbcl binary.
* compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
* contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
* optimization: there's now a fast-path for fixnum arguments in the
generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
* optimization: the code generated on x86-64 is more compact thanks
to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
* bug fix: floating-point exception handling now partly works on
x86-64. (Thanks to James Knight)
* improvement to the MIPS backend from Thiemo Seufer: C-style
64-bit long long arguments and return values to alien functions
are now supported.
* fixed some bugs revealed by Paul Dietz' test suite:
** the type-error signalled from WARN has a filled-in DATUM slot.
** the type-error required when a stream is not associated with
a file has the stream as its datum.
** type-errors on single-floats on x86-64 no longer have
:INVALID-OBJECT as the datum
** the type-errors signalled for invalid function names now have
a correct expected type
** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
for structures defined with a :TYPE. Documentation strings for
typed structures are no longer immediately discarded
** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
broadcast streams and synonym streams. FILE-LENGTH now also works
on broadcast streams.
changes in sbcl-0.9.0 relative to sbcl-0.8.21:
* incompatible change: the --noprogrammer option, deprecated since
version 0.7.5, has been removed. Please use the equivalent
--disable-debugger option instead.
* incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
interrupts enabled.
* incompatible change: support for *BEFORE-GC-HOOKS* (that have been
inoperational for a while now) has been completely removed.
* null lexical environments are now printed as #<NULL-LEXENV>,
significantly reducing the amount of clutter in typical backtraces.
* documentation on weak pointers, finalization, and after GC hooks
has been added to the manual.
* optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
as other specialized array types, is much faster. SUBSEQ and
COPY-SEQ on such arrays have also been sped up.
* optimization: EQL is now more efficient when at least other argument
is known to be of type (OR FIXNUM (NOT NUMBER)).
* fixed bug: the runtime is now less vulnerable to changes in the
size of the SBCL object on OS X, and virtual memory is reserved for
all spaces that need to be at a fixed address.
* fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
* fixed bug: finalizers and after GC hooks that cause consing are now
safe.
* fixed bug: compiler error messages and summaries are now printed to
*ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
* fixed inference of the upper bound of an iteration variable.
(reported by Rajat Datta).
* fixed bug 211e: calling local functions with duplicated constant
keyword argument no longer causes a bogus style warning about an
unused variable.
* fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
ftype declaration to be disregarded. (reported by Dave Roberts)
* fixed bug 373: caused by erronous compilation of references to alien
variables in the runtime on ppc/darwin.
* fixed bug 376: CONJUGATE type deriver.
* fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
(reported by Baughn on #lisp)
* a cross-compiler bug on non-x86 platforms has been identified and
fixed. (thanks to Bruno Haible)
* improvements to the MIPS runtime code for increased stability.
(thanks to Thiemo Seufer)
* increased the maximimum compact environment size to allow
purify on images with large amounts of functions. (thanks to Cyrus Harmon)
* partial workaround for bug 135: don't name the function we're
calling for hairy cases of EVAL, so as not to accumulate one environment
entry per call to EVAL. (reported by Kevin Reid)
* improvements to the x86-64 disassembler. (thanks to Lutz Euler)
* optimization: type testing for non-vector arrays should be faster.
* fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
on x86-64
* bug fix: setting 31st element of a bit vector to zero did not work
on Alpha-32.
* bug fix: redefining a class definition which failed due to a
previous accessor / function clash now works (but see BUGS entry
#380 for more problems in this area). (thanks to Zach Beane)
* the long form of DEFINE-METHOD-COMBINATION disables method group
checking when given a single method group with pattern *. (thanks
to Wendall Marvel)
* on x86 compiler supports stack allocation of results of simple
calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
* support for building and running on Mac OS X 10.4 "Tiger" has been added
** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
* fixed some bugs related to Unicode integration:
** the restarts for recovering from input and output encoding
errors only appear when there is in fact such an error to
handle.
* fixed some bugs revealed by Paul Dietz' test suite:
** MISC.549 and similar: late transformation of unsafe type
assertions into derived types caused unexpected code
transformations.
** SCALE-FLOAT type deriver is less wrong.
** type derivers for EXP, LOG and similar functions compute result
types for complex arguments better.
** (MISC.563) CONJUGATE type deriver works for very restricted
complex types.
** out-of-line type testers for character strings are available.
** EQUAL compiler transform understands specialness of objects
of type BIT-VECTOR.
** accessing double-floats stored on the stack now works on x86-64.
** debugger internals could sometimes create invalid lispobjs,
resulting in GC crashes.
** MISC.548: type check weakening can convert required type into
optional.
** initialization forms for bindings are not in scope of free special
declarations.
changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
* incompatible change: thread support for non-NPTL systems has
been removed - locking is buggy and unreliable. A threaded
SBCL build will now warn at startup and refuse to create
new threads, unless futex support is detected in the kernel
* incompatible change: the top level REPL now has only an ABORT
restart associated with it, not TOPLEVEL and ABORT as it used to.
TOP and TOPLEVEL are now available as debugger commands for
returning to the top level.
* incompatible change: forms evaluated in the REPL now use the
global optimization policy.
* incompatible change: user- and system-initialization files are
no longer processed with LOAD, but by READ and EVAL; hence the
global optimization policy, startup package, readtable, etc,
can be set by them.
* The .fasl file format number has been incremented because of
various incompatible changes.
* internal entry point details and argument counts no longer appear
in backtraces unless explicitly requested by setting
SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
* built-in and standard functions no longer have names like "top
level local call to FOO".
* fixed bug 32: functions defined in non-null lexical environments
now have more legible printed representation
* fixed bug 33: functions defined in non-null lexical environemnts
are now more amenable to inspection by INSPECT.
* workaround for bug 354: XEPs no longer appear in backtraces unless
explicitly requested.
* fixed bug: receiving the signal which results from attempting to
write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
SIGBUS on other *BSDs) on architectures where the C stack is also
the Lisp stack (x86 and x86-64) from foreign code no longer leads
to debugger confusion or wild instability. (reported by Cheuksan
Wang)
* fixed bug: COUNT and EQUAL no longer issue compiler efficiency
notes when operating on objects known to be SIMPLE-BIT-VECTORs.
(reported by Lutz Euler)
* fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
compiled code. (reported by Paul Dietz)
* fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
specialized parameter to a method to something that is not TYPEP
the specializer is now possible.
* fixed bug: the MAKE-INSTANCE optimization is now correct in the
face of package deletion.
* fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
pathname. (reported by David Tolpin on c.l.l)
* contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
STRING-STREAM and FILE-STREAM, respectively.
* contrib improvement: SB-INTROSPECT handles more of SLIME's needs
than previously; in addition, its test suite is now run on build.
(thanks to Luke Gorrie)
* a more robust x86-64 disassembler. (thanks to Lutz Euler)
* optimization: added a immediate representation for single-floats
on x86-64
* fixed some bugs revealed by Paul Dietz' test suite:
** MISC.564: defined out-of-line version of %ATAN2 on x86.
** attempting to create a package with a colliding nickname causes
correctable errors to be signalled.
** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
** several x86-64 backend bugs related to sign-extension of immediate
operands.
changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
* fixed inspection of specialized arrays. (thanks to Simon Alexander)
* fixed disassembly of SHLD and SHRD on x86. (thanks to David
Lichteblau)
* fixed loading of multiply forward-referenced layouts.
(thanks to Cheuksan Wang)
* fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
(see COMPILE-FILE documentation for details of :PRINT option)
* fixed bugs 19 and 317: fixed-format floating point printing is
more accurate. This also fixes a bug reported by Adam Warner
related to the ~@F format directive.
* fixed bug 371: bignum print/read inconsistency. (thanks to Harald
Hanche-Olsen)
* fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
dispatch table if the from-char is a dispatch macro character.
* fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
by the wordsize no longer ignore the last word. (reported by Lutz
Euler)
* fixed bug in type checking of dynamic-extent variables. (reported
by Svein Ove Aas)
* optimization: sequence traversal functions use their freedom to
coerce function designators to functions.
* optimization: code with many calls to CLOS methods specialized on
CLOS classes has had redundant type checks removed.
* optimization: added declarations to speed up operations that access
the internal character database (for example STRING-UPCASE)
* optimization: comparison operations between floats and sufficiently small
fixnums no longer create extra rationals
* fixed some bugs related to Unicode integration:
** portions of multibyte characters at the end of buffers for
character-based file input are correctly transferred to the
start of the buffer at the next read.
** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
passing it through to OPEN.
** LOAD on source files likewise passes any EXTERNAL-FORMAT
argument given to internal calls to OPEN.
** the built-in comment readers (introduced by character sequences
";" and "#|") are more forgiving to encoding errors; they will
STYLE-WARN and then attempt to resync the stream at a character
boundary. (thanks to Teemu Kalvas)
* fixed some bugs in the x86-64 port:
** Negative short int return values from c-calls are sign-extended
correctly.
** The stack is aligned to 16-bytes for c-calls, as required by
the ABI. (thanks to Cheuksan Wang)
** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
for enums. (thanks to Vincent Arkesteijn)
** Multiple small optimizations and bugfixes for floating point
operations.
* fixed some bugs revealed by Paul Dietz' test suite:
** Space, Tab, Linefeed, Return and Page have the invalid
secondary constituent character trait.
** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
syntax.
** WITH-INPUT-FROM-STRING should only update the index place on
normal termination.
** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
works more reliably.
** Bit-array operations (BIT-AND and similar) worked incorrectly
with one-dimensional arrays with fill pointers.
** TYPE-OF failed on a complex with an integer realpart and a
RATIO imagpart.
** compiler failure during type inference for the code of form
(IF (EQL X (THE ...)) ...) (MISC.535).
changes in sbcl-0.8.19 relative to sbcl-0.8.18:
* new port: SBCL now works in native 64-bit mode on x86-64/Linux
platform. The port supports 61-bit fixnums, large memory spaces
and reloading shared object files.
* enhancement: saving cores with foreign code loaded is now
supported on ppc/Darwin in addition to the previously supported
platforms.
* enhancement: the statistical profiler now walks deeper into the
call stack for more meaningful call-graphs and accrued time
reports (x86/x86-64 only). It also now reports time spent in
foreign functions.
* enhancement: it is now possible to trace most individual methods
of a generic function in addition to tracing the generic function
itself.
* bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
to MAKE-INSTANCE.
* bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
* bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
produces an error. (thanks to Vincent Arkesteijn)
* bug fix: NAMESTRING on pathnames with :WILD components in their
directories works correctly. (thanks to Artem V. Andreev)
* fixed bug 125: compiler preserves identity of closures. (reported
by Gabe Garza)
* bug fixed: functions with &REST arguments sometimes failed with
"Undefined function" when compiled with (DEBUG 3). (reported by
Robert J. Macomber)
* bug fix: overflow during compiling of setting element of a bit
vector with constant index and value. (reported by Timmy Douglas)
* build fix: fixed the dependence on *LOAD-PATHNAME* and
*COMPILE-FILE-PATHNAME* being absolute pathnames.
* on x86 compiler partially supports stack allocation of dynamic-extent
closures.
* GO and RETURN-FROM do not check the extent of their exit points
when compiled with SAFETY 0.
* fixed some bugs related to Unicode integration:
** encoding and decoding errors are now much more robustly
handled; it should now be possible to recover even from invalid
input or output to the terminal. (thanks to Teemu Kalvas)
** provided a first cut at implementing STRING-TO-OCTETS and
OCTETS-TO-STRING. (thanks to Robert J. Macomber)
** altered the SB-MD5 contributed module slightly, changing the
interface just enough for it to be supportable for builds where
lisp characters are not eight bits.
* fixed some bugs revealed by Paul Dietz' test suite:
** the FORMATTER-generated functions for ~V[ conditionals require
the correct number of arguments.
** READ-FROM-STRING returns the mandated second value when applied
to displaced strings.
** the #\Rubout and #\Backspace characters are treated as invalid
constituent characters by the tokenizer.
changes in sbcl-0.8.18 relative to sbcl-0.8.17:
* new feature: reloading changed shared object files with
LOAD-SHARED-OBJECT now causes the new definitions to take effect.
* new feature: references to foreign variables and functions
can now be compiled and loaded before the corresponding shared
object file is loaded, as long as the foreign definitions are
available at runtime.
* Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
supported. (thanks to Dan Debertin)
* SB-ALIEN enums can now be represented in Lisp by any symbols, not
just keywords. (thanks to Vincent Arkesteijn)
* fixed bug #331: structure-class instances corresponding to
DEFSTRUCT forms are now created eagerly.
* fixed bug #345: backtraces from calls to undefined functions work
on x86 as well. Related bug #61 is now also partially fixed on x86
(backtraces from throws to unknown catch tags.)
* bug fix: lambda-list parsing is now stricter vrt. order and number
of lambda-list keywords.
* bug fix: as specified by AMOP, an error is signalled if a
class-option appears multiple times in a DEFCLASS form. (reported
by Bruno Haible)
* bug fix: RANDOM can be compiled when the compiler derives the type
of its numeric argument as a disjoint set of small integers.
(reported by Paul Dietz)
* bug fix: starting a core saved with shared objects loaded when
those objects are not available no longer causes threaded SBCL to
hang. (reported by Sean Ross)
* bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
TRACE).
* bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
argument, which must always be NIL. (reported by Kalle Niemitalo)
* bug fix: printing 1.0d+23 no longer results in an error.
(reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
* bug fix: structure slot setters preserve evaluation order. (thanks
to Gabor Melis)
* fixed some bugs related to Unicode integration:
** RUN-PROGRAM can allow its child to take input from a Lisp
stream. (reported by Stefan Scholl)
** ASDF-INSTALL successfully downloads .tar.gz files in all
locales. (reported by Ken Causey)
* fixed some bugs revealed by Paul Dietz' test suite:
** INCF, DECF and REMF evaluate their place form as specified in
CLtS 5.1.3.
** FORMATTER expands ~{ ~} iteration directives with V or #
parameters correctly.
** FORMATTER deals with the ~@[ ~] conditional directive where the
consequent uses no arguments correctly.
** the system has a partial understanding of the (COMPLEX RATIO)
type specifier.
** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
required.
changes in sbcl-0.8.17 relative to sbcl-0.8.16:
* new feature: a build-time option (controlled by the :SB-UNICODE
keyword feature, enabled by default) for building the system with
support for the entire 21-bit character space defined by the
Unicode consortium.
* new feature: the system now has rudimentary external-format
support; the primary user-visible change at this time is that
characters with the high bit set (such as lower-case-e-acute) will
print correctly to a terminal in a UTF-8 environment.
* minor incompatible change: BASE-CHAR no longer names a class;
however, CHARACTER continues to do so, as required by ANSI.
* minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
has been moved to the SB-EXT package (temporarily re-exported from
SB-DEBUG).
* minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
instead.
* fixed bug #351: better error-handlind and reporting for malformed
LET and LET* forms.
* fixed bug #350: bignum-printing is now more memory-efficient,
allowing printing of very large bignums, eg. (expt 2 10000000).
(reported by Bruno Haible)
* fixed bug #302: better primitive-type selection for intersection
types.
* fixed bug #308: non-graphic characters now all have names, as
required. (reported by Bruno Haible)
* bug fix: redefining a class with different superclasses now correctly
removes it from the direct-subclasses of its previous superclasses.
(reported by David Morse)
* bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
new value now works. (reported by Bruno Haible)
* bug fix: correct canonicalization of multiple non-standard slot
options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
* bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
is not yet finalized, as required by AMOP. (reported by Bruno Haible)
* bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
now exists, an signals an error.
* bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
during macroexpansion for non-iteration variables as well. (reported
by Bruno Haible for CMUCL)
* bug fix: Cyclic structures and unprintable objects in compiler
messages no longer cause errors. (reported by Bruno Haible)
* bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
and READ-FROM-STRING all now return a primary value of NIL if
*READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
* bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
(reported by Bruno Haible for CMUCL)
* bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
do not designate a condition. (reported by Bruno Haible for
CMUCL)
* bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
name conflict situations in CLHS 11.1.1.2.5, and provide a restart
permitting resolution in favour of any of the conflicting symbols.
(reported by Bruno Haible for CMUCL)
* bug fix: EQUAL compiler optimizations is less aggressive on
strings which can potentially compare true despite having distinct
specialized array element types.
* bug fix: unit enumerations can be defined without dividing by
zero. (thanks to Vincent Arkesteijn)
* FORMAT compile-time argument count checking has been enhanced.
(report from Bruno Haible for CMUCL)
* a partial workaround for the bug 262: the compiler does not try to
inline-expand a local function doing RETURN-FROM from a deleted
BLOCK. (thanks to Peter Denno for the bug report and to David
Wragg for the simple test case)
* fixed some bugs revealed by Paul Dietz' test suite:
** RENAME-PACKAGE allows all package designators as new package
names.
** constraint propagation and lambda variable substitution are
more cautious in dealing with partially deleted code.
** compiler sometimes lost reoptimization passes.
** CERROR, given a condition as condition designator, passes its
remaining arguments to the continue format control without
complaint.
** Case-altering FORMAT directives work correctly on non-ASCII
characters.
** The REAL type specifier handles bounds outside the floating
point ranges without signalling FLOATING-POINT-OVERFLOW.
** Functions with IR1-transformations can create intercomponent
references to global functions.
** NIL parameter to the FORMAT directive ~^ means `unsupplied
parameter'.
** FORMAT ~R treats a nil value for its first parameter correctly.
changes in sbcl-0.8.16 relative to sbcl-0.8.15:
* enhancement: saving cores with foreign code loaded is now
supported on x86/NetBSD and sparc/Linux in addition to the previously
supported platforms.
* bug fix: on some platforms repeated installations caused multiple
copies of HTML documentation to be installed -- should not happen
any more. (reported by Stefan Scholl)
* bug fix: parsing self-recursive alien record types multiple times
no longer causes infinite recursion. (reported by Thomas F. Burdick,
original patch by Helmut Eller for CMUCL)
* bug fix: stack-exhaustion detection works now on NetBSD as well.
(thanks to Richard Kreuter)
* bug fix: defining classes whose accessors are methods on existing
generic functions in other (locked) packages no longer signals
bogus package lock violations. (reported by François-René Rideau)
* bug fix: special variables as DEFMETHOD parameters no longer have
associated bogus type declarations. (reported by David Wragg and
Bruno Haible)
* bug fix: read-write consistency on streams of element-type
(SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
* bug fix: redefiniton of the only method of a generic function with
no DEFGENERIC no longer emits a full WARNING. In addition,
redefinition of generic functions with no DEFGENERIC to an
incompatible lambda list now signals an error. (thanks to Zach
Beane)
* bug fix: DEFGENERIC now works even when there's a function of the
same name in an enclosing lexical environment. (thanks to Zach
Beane)
* fixed compiler failure, caused by instrumenting code during
IR1-optimization. (Debian bug report #273606 by Gabor Melis)
* optimization: added loop analysis and improved register allocation
* fixed some bugs revealed by Paul Dietz' test suite:
** POSITION on displaced vectors with non-zero displacement
returns the right answer.
** (SIMPLE-STRING) is a valid type specifier for sequence
creators.
** *PRINT-LEVEL* handling for slotless structures is pedantically
correct.
** PPRINT-INDENT accepts a request for an indentation of any REAL.
** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
correct amounts.
** The justification version of the FORMAT ~< directive treats
non-zero minpad parameter correctly.
changes in sbcl-0.8.15 relative to sbcl-0.8.14:
* incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
the supported interface.
* new feature: Single-stepping of code compiled with DEBUG 2 or
higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
* new feature: saving cores with foreign code loaded is now
supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
Timothy Moore's work for CMUCL)
* bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
parameters to * instead of NIL if no initform is supplied.
(reported by Johan Bockgaard)
* bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
correctly when FUNCALL appears as the car of the form. Note:
despite this FUNCALL forms are not currently subject to
compiler-macro expansion. (port of Raymond Toy's fix for the
same from CMUCL, reported by Johan Bockgaard)
* bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
(thanks for Teemu Kalvas)
* bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
case instead of terminating the iteration (thanks for Julian
Squires, Sean Champ and Raymond Toy)
* bug fix: incorrect expansion of defgeneric that caused a style
warning. (thanks for Zach Beane)
* bug fix: slot accessor effective method computation works properly
for classes with multiple non-standard applicable methods on
SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
* on x86 compiler supports stack allocation of results of LIST and
LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
CMUCL implementation by Gerd Moellmann)
* fixed some bugs revealed by Paul Dietz' test suite:
** FORMAT strings with both the ~<~:;~> form of the justification
directive and pretty-printing directives cause an error.
changes in sbcl-0.8.14 relative to sbcl-0.8.13:
* incompatible change: the internal functions
SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
logical operations on (UNSIGNED-BYTE 32) values, have been renamed
to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
instead of the old functions.
* new feature: on platforms where "dladdr" is available foreign
function names now appear in backtraces. (based on Helmut Eller's
work for CMUCL)
* documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
manual.
* documentation: ASDF manual is now distributed with SBCL.
* bug fix: SBCL can now load its contributed modules with REQUIRE
even if the system-provided entries have been removed from
ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
detected.
* bug fix: backtraces involving undefined functions or assembly
routines are more informative. (thanks to Brian Downing)
* bug fix: mutually referent alien structures now work correctly.
(reported by Rick Taube)
* bug fix: structures defined by WITH-ALIEN can be referred to
within other definitions in the same WITH-ALIEN.
* bug fix: division operators (MOD, TRUNCATE and the like) with
constant zero divisors and integer dividends no longer generate
left shifts.
* bug fix: provide default methods for INPUT-STREAM-P and
OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
* bug fix: improve the detection and resolution of MOP metacycles
(where effective method computation depends on the generic function
having its effective method computed). (reported by Bruno Haible)
* bug fix: pass the right initargs to :BEFORE or :AFTER methods on
SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
* bug fix: pathnames with relative directory components can be
represented relative to default pathnames.
* optimization: in taking the GCD of bignums, reduce the two bignums
to approximately the same size (using Euclid's algorithm) before
applying the more sophisticated binary GCD. (thanks to Juho
Snellman)
* optimization: COUNT on bitvectors now operates word-at-a-time.
* optimization: ASH with a positive, but not necessarily constant,
(leftwards) shift, when in a modular context, is compiled to a
hardware shift.
* fixed some bugs revealed by Paul Dietz' test suite:
** FORMAT variable parameters ("~V<char>") are defaulted properly
if the corresponding argument is NIL.
** FORMAT directives accepting a minpad parameter treat negative
values as 0.
** literal commas as character parameters to FORMAT directives are
parsed correctly.
** literal spaces directly after ~<Newline> directives within a
format-logical-block (~:< ~@:>) do not induce :FILL-style
conditional newlines.
** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
as specified: it no longer includes conditional newlines).
** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
*PRINT-ESCAPE*).
** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
:PER-LINE-PREFIX argument does not evaluate to a string.
changes in sbcl-0.8.13 relative to sbcl-0.8.12:
* new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
the manual for details; for now, package locks can be disabled by
removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
if no major problems are found then it is likely that they will be
compiled in unconditionally.
* major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
unsupported operators on all platforms. To load a shared library
into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
object file, link it into a shared library outside of SBCL and
load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
bug #79)
* bug workaround: ROOM T and the GC were not working together
reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
reporting facility aren't preserved. That reporting has been
disabled, so now until and unless someone figures out how to make it
work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
* minor incompatible change: as threatened around sbcl-0.8.0, the
home package of MOP-related symbols is now SB-MOP, not SB-PCL.
The symbols are also exported from SB-PCL for backwards
compatibility, but more so than before SB-PCL should be treated as
an implementation-internal package.
* fasl format changed: SBCL 0.8.13 fasls are incompatible with those
of earlier versions
* the SB-SPROF contrib now works on (most) non-x86 architectures.
It is known as of this release not to work on the Alpha, however.
* fixed bug #167: errors signalled due to illegal syntax in method
bodies are now more legible.
* fixed bug #338: instances of EQL-SPECIFIER are now valid type
designators and can hence be used with TYPEP.
* fixed bug #333: CHECK-TYPE now ensures that the type error
signalled, if any, has the right object to be accessed by
TYPE-ERROR-DATUM. (reported by Tony Martinez)
* fixed bug #340: SETF of VALUES obeys the specification in ANSI
5.1.2.3 for multiple-value place subforms. (reported by Kalle
Olavi Niemetalo)
* fixed bug #334: programmatic addition of slots using specialized
methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
and :ALLOCATION :CLASS slots.
* fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
float exponents. (rereported by Peter Seibel)
* fixed a bug: #\Space (and other whitespace characters) are no
longer considered to be macro characters in standard syntax by
GET-MACRO-CHARACTER.
* fixed bug: initialization of condition class metaobjects no longer
causes an instance of the condition to be created. (reported by
Marco Baringer)
* fixed bug: it is now possible to have slots such that
SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
description is neither :INSTANCE nor :CLASS.
* fixed bug: the ctor optimization of MAKE-INSTANCE now respects
user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
SLOT-VALUE-USING-CLASS), and no longer causes errors with
non-standard SLOT-DEFINITION-ALLOCATION values.
* fixed bugs: various race conditions handling exiting threads.
CL-PPCRE's thread torture test now passes.
* fixed arguably-a-bug: GC time proportional to number of threads in
system even when most of them are idle
* optimization: improved performance of BIT and SBIT on bit-vectors.
* .fasl file incompatibility: The fasl file version number has
been incremented because of changes associated with package locks.
changes in sbcl-0.8.12 relative to sbcl-0.8.11:
* minor incompatible change: the system no longer provides
optimization hints (conditions which are TYPEP
SB-EXT:COMPILER-NOTE) for conforming code in default compilation
mode; these hints are still emitted when higher SPEED optimization
is requested.
* new contrib module: a sampling profiler (profiling by statistical
sampling, rather than by instrumenting functions) is available as
the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
* the behaviour of the standard function ED is now customizeable by
third parties through a hook variable: see ED's documentation
string for information on the protocol.
* the compiler no longer emits efficiency notes for (FUNCALL X)
when the type of X is uncertain under default optimization
settings.
* fixed bug 276: mutating a binding of a specialized parameter to a
method to something that is not TYPEP the specializer is now
possible.
* fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
exhibit the required behaviour on the x86 platform. (thanks to
Peter van Eynde, Eric Marsden and Bruno Haible)
* fixed bug 335: ATANH now computes the inverse hyperbolic tangent
even for difficult arguments. (reported by Peter Graves)
* fixed bug 141a: the backquote printer now descends quoted
structure.
* fixed another bug in backquote printing: no more destructive
modification of the form's list structure. (reported by Brian
Downing)
* fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
move between its address being taken and the call to
interrupt_thread, fixing a crashing race condition.
* the SB-POSIX contrib implementation has been adjusted so that it
no longer exhibits ridiculously poor performance when constructing
instances corresponding to C structs.
changes in sbcl-0.8.11 relative to sbcl-0.8.10:
* minor incompatible change: the sb-grovel contrib now treats C
structures as alien (in the sense of SB-ALIEN) objects rather than
as undistinguished (simple-array (unsigned-byte 8) (*))s. This
has implications for memory management of client code
(sb-grovel-returned objects must now be manually managed) and for
type safety (alien objects now have full types).
* new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
used to control emission of compiler diagnostics, rather than the
SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
quality should be considered deprecated.
* install.sh now installs the user manual as well
* (not quite a new documentable feature, but worth considering in
the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
beginnings of a semantically meaningful condition hierarchy is
under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
IDEs.
* fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
designator as the defaults argument.
* fixed bug: Displaced arrays whose displaced-to array has become
too small now cause ARRAY-DIMENSION to signal an error, providing
for safer bounds-checking. (reported by Bruno Haible)
* fixed bug: DEFCLASS slot definitions with identical :READER and
:WRITER names now signal a reasonable error. (reported by Thomas
Burdick)
* fixed bug: CLOSE :ABORT T on appending stream no longer causes
file deletion.
* fixed bug: Invalid slot specification errors now print correctly.
(thanks to Zach Beane)
* fixed bug 320: Shared to local slot value transfers in class
redefinitions now happen corrently from superclasses as
well. (reported by Bruno Haible)
* fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
Haible)
* fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
improper lists correctly. (reported by Bruno Haible)
* fixed bug 313: source-transform for <fun-name> was erroneously
applied to a call of a value of a variable with name <fun-name>.
(reported by Antonio Menezes Leitao)
* fixed bug 307: The obsolete instance protocol ensures that
subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
* fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
remove dead unknown-values globs from the middle of the stack.
* added a new restart to *BREAK-ON-SIGNALS* handling to make it
easier to resume long computations after using *BREAK-ON-SIGNALS*
to diagnose and fix failures. (thanks to Nikodemus Siivola)
* fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
CLISP test suite): WRITE-TO-STRING is not constant-foldable.
* fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
MEMBER and UNION types have likewise been fixed. (thanks to Bruno
Haible)
* fixed a (fairly theoretical) bug in string printing: if
*PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
does not have array-element-type equal to the most general string
type.
* fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
function name. (thanks to Nikodemus Siivola)
* fixed bug: compile-time format string checker failed on
non-closed ~{. (reported by Thomas F Burdick)
* fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
don't warn on legal loop code involving more than one aggregate
boolean. (thanks to Nikodemus Siivola)
* fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
in keyword position to MAKE-PACKAGE was not being reported as
invalid.
* fixed bug: as reported by Juan Ripoll on cmucl-imp,
MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
keywords.
* fixed bugs 280 and 312: the checking for multiple definitions in a
file is less likely to become confused by uses of inline
functions.
* fixed bug: the #S reader macro performs the keyword coercion
specified for slot names. (reported by Kalle Niemitalo)
* fixed bug: lambda lists may contain symbols whose names start with
& but are not lambda-list-keywords; their occurrence triggers a
STYLE-WARNING.
* fixed bug 321: define-method-combination argument lambda lists do
not cause invalid code to be generated when &optional or &aux
variables have default values. (reported by Bruno Haible)
* fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
have CLOS classes; this appears also to have fixed reported
instability in stack exhaustion detection.
* fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
MUFFLE-WARNING when no associated restart is present is now
printable.
* optimization: rearranged the expansion of various defining macros
so that each expands into only one top-level form in a
:LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
approximately 10%.
* optimization: used a previously little-used slot in symbols to
cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
to Juho Snellman)
* fixed some bugs revealed by Paul Dietz' test suite:
** MAKE-INSTANCES-OBSOLETE returns the class name when called with
a symbol.
** Fixed an optimization bug related to inheritance of initforms
from local to shared slots.
** FILE-POSITION works as specified on BROADCAST-STREAMs.
** CAST optimizer forgot to flush argument derived type.
** print/read consistency on floats is now orders of magnitude
more likely. (thanks also to Bruno Haible for a similar report
and discussions)
** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
for objects of type REAL. Make it so.
** SXHASH is specified (infelicitously) to respect similarity,
which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
it so. (thanks to Markus Ziegler)
** on the Alpha, the compiler succeeds in compiling functions
returning a known number of arguments greater than 63.
** fixed handling of invalid NIL arguments in keyword position
in local calls.
** fixed non-pretty printing of arrays with *PRINT-RADIX* being
true.
** provided a readably-printable representation for RANDOM-STATE
objects.
** ensured that pathnames, where they have a namestring, always
print using #P"..." syntax.
changes in sbcl-0.8.10 relative to sbcl-0.8.9:
* Support for the forthcoming 2.0 version of the NetBSD kernel
running on x86 hardware has been added. (thanks to Perry
E. Metzger most immediately, and others for their past work)
* SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
current release version; SBCL's OpenBSD support had been broken
since about the time of OpenBSD's switch to ELF binary format.)
* [placeholder for DX summary]
** user code with &REST lists declared dynamic-extent, under high
speed or space and low safety and debug optimization policy.
* The manual has been converted to Texinfo format and the debugger
chapter from the cmucl manual has been added.
* A facility has been added to extract documentation strings from
sbcl and store them as Texinfo-formatted snippets for inclusion in
the manual (via Texinfo's @include directive)
* bug fix: compiler emitted division in optimized DEREF. (thanks for
the test case to Dave Roberts)
* bug fix: multidimensional simple arrays loaded from FASLs had fill
pointers. (reported by Sean Ross)
* bug fix: PROFILE output is printed nicely even for large numerical
values. (thanks to Zach Beane)
* bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
greater than 32 handle EOF correctly.
* bug fix: on X86 an immediate argument of the IMUL instruction is
correctly printed in disassembly. (thanks to Lutz Euler)
* bug fix: class slots in redefined classes preserve their old
values. (thanks to Bruno Haible and Nikodemus Siivola)
* bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
succeeds. (reported by Marco Baringer)
* fixed some bugs revealed by Paul Dietz' test suite:
** READ-SEQUENCE now works on ECHO-STREAMs.
** RATIONALIZE works more according to its specification. (thanks
to Bruno Haible)
changes in sbcl-0.8.9 relative to sbcl-0.8.8:
* deprecation of old extension: *DEBUG-PRINT-LEVEL* and
*DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
should matter to you only if you rebind the printer control
variables and then find you want different bindings in the
debugger than in the ordinary execution of your program.)
* The runtime build system has been tweaked to support building
(on SPARC/SunOS) using a C compiler which invokes Sun's own
assembler and linker. (thanks to Nikodemus Siivola)
* Unbound, undefined, undeclared variables now trigger full
WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
more often programmer error than deliberate exploitation of undefined
behaviour.
* optimization: the hash algorithm for strings has changed to one
that is less vulnerable to spurious collisions. (thanks to Juho
Snellman)
* optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
needless bounds checking. (thanks to Juho Snellman)
* optimization: implemented multiplication as a modular
(UNSIGNED-BYTE 32) operation on the PPC backend.
* fixed some bugs revealed by Paul Dietz' test suite:
** ADJUST-ARRAY now copies the datum in a zero rank array if
required.
** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
** MAKE-STRING-INPUT-STREAM functions correctly for strings with
element-type NIL.
** CLEAR-INPUT accepts NIL and T for its (optional) stream
argument.
** Ratios can now be printed correctly with *PRINT-BASE* bound to
2, 8 or 16.
** ECHO-STREAMs no longer attempt to echo the end of file value to
their output stream on EOF from read.
** CONCATENATED-STREAM-STREAMS discards constituent streams which
have been read to end-of-file.
** CLOSE works as expected on the null CONCATENATED-STREAM, and on
STRING-STREAMS.
** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
description of determination of which consecutive characters
constitute a word.
** Printing the "Space" character with escaping on now yields "#\\ ",
rather than "#\\Space", as mandated by ANSI 22.1.3.2.
** Reading floating-point numbers with *READ-BASE* set to a number
less than 10 works correctly.
** Reading floating-point numbers with *READ-BASE* set to a number
more than 10 works correctly.
** Printing with *PRINT-READABLY* targets the standard readtable, not
the readtable currently in effect.
changes in sbcl-0.8.8 relative to sbcl-0.8.7:
* minor incompatible change: parsing of namestrings on a physical
(Unix) host has changed; numbers after the final #\. in a
namestring are no longer interpreted as a version field. This is
intented to be largely invisible to the user, except that the
meaning of the namestring "*.*.*" has changed: it now refers to a
pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
should usually be replaced by
(make-pathname :name :wild :type :wild :version :wild)
with the added benefit that this is more likely to be portable.
As a consequence of this change, the :IF-EXISTS :NEW-VERSION
option to OPEN now signals an error if the file being opened
exists; this may have an impact on existing code.
* fixed bug 190: RUN-PROGRAM should now work properly, respecting
signals received, on the PowerPC platforms (both Linux and
Darwin). (thanks to Pierre Mai for pointing out the location of
the error)
* several fixes on OS X: The system now builds and runs cleanly on
Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
(thanks to Brian Mastenbrook)
* bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
second-resolution: integer multiples of 1/3600 between -24 and 24.
(thanks to Vincent Arkesteijn)
* bug fix: functions =, /=, <, <=, >, >= did not check the argument
type when called with 1 argument; PEEK-CHAR checked type of
PEEK-TYPE only after having read first character from a
stream. (reported by Peter Graves)
* bug fix: the garbage collector now has much better locality
behaviour, and in particular no longer treats all memory as being
exhausted when many small objects point to each other in a deeply
recursive manner.
* bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
recognized as being TYPEP their class.
* bug fix: the PUSHNEW documentation string has been corrected.
(thanks to Vincent Arkesteijn)
* bug fix: defaulting of the value for the last of an atypically
large number of multiple values being bound was not being
performed correctly on the Alpha or PPC platforms
* optimization: implemented multiplication as a modular
(UNSIGNED-BYTE 32) operation on the x86 backend.
* optimization: SEARCH on simple-base-strings can now be open-coded.
(see also contrib/compiler-extras.lisp for inspiration for
teaching the compiler about the Boyer-Moore algorithm).
* value, returned by MAX (and MIN) called with several EQUALP, but
not EQL, arguments now does not depend on compiler settings.
* fixed some bugs revealed by Paul Dietz' test suite:
** in stack analysis liveness information is propagated from
non-local entry points.
** pathwise CAST removing failed when the CAST node did not start
a block.
** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
stream.
** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
host is already defined.
** RENAME-FILE works on streams instead of signalling an internal
type error.
** PEEK-CHAR uses the current readtable when determining whether
or not a character is whitespace.
** MERGE-PATHNAMES handles the case when the pathname does not
specify a name while the default-pathname specifies a version.
** Pathnames now stand a better chance of respecting print/read
consistency.
** Attempting to use standardized file system operators with a
pathname with invalid :DIRECTORY components signals a
FILE-ERROR.
** OPEN :DIRECTION :IO no longer fails to work on non-existent
files.
** DIRECTORY on logical pathnames is more correct.
** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
signal a TYPE-ERROR if their argument is not a stream.
** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
designator argument does not designate a stream.
** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
examining the synonym.
** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
work as specified.
** OPEN and WITH-OPEN-STREAM allow opening streams with
element-type larger than ([UN]SIGNED-BYTE 32).
changes in sbcl-0.8.7 relative to sbcl-0.8.6:
* When built with the :SB-FUTEX feature, threaded builds now take
advantage of the "fast userspace mutex" facility in Linux kernel 2.6
for faster/more reliable mutex and condition variable support.
* Incompatible change (but one you probably shouldn't have been using
anyway): the interface and code for arbitrating between multiple
threads in the same user session has been redesigned.
* bug fix: GET-SETF-EXPANSION no longer throws an internal type
error when called without an explicit environment argument.
(thanks to Nikodemus Siivola)
* bug fix: buffered :DIRECTION :IO streams are less likely to become
confused about their position. (thanks to Adam Warner and Gerd
Moellmann)
* bug fix: Pretty printing backquoted forms with unquotations in the
argument list position of various code constructs such as LAMBDA
now works correctly. (reported by Paul Dietz)
* bug fix: Pretty printing unquotations no longer loses all
stream position information.
* optimization: performance of string output streams is now less
poor for multiple small sequence writes.
* optimization: performance of CSUBTYPEP in the presence of complex
expressions involving CONS and NOT many times has been improved.
(reported by Paul Dietz)
* ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
Sean Ross)
* SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
streams for the REPL, for the debugger, and so on. (thanks to
David Licteblau)
* DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
* fixed some bugs revealed by Paul Dietz' test suite:
** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
is ignored if it is too small, rather than propagating through
to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
** extremely complex negations of CONS types were not being
sufficiently canonicalized, leading to inconsistencies in
SUBTYPEP.
** VALUES tranformer lost derived type.
changes in sbcl-0.8.6 relative to sbcl-0.8.5:
* fixed a bootstrapping bug: the build process no longer assumes
that the various BOOLE-related constants have the same value in
host and target lisps. (noted by Paul Dietz' test suite on an
SBCL binary built from CLISP)
* The system can now be dynamically linked on the MIPS platform,
which enables dynamic loading of foreign code from Lisp. (thanks
to Ralf Baechle for discussions on the MIPS ABI)
* The system now records debugging information for its own source
files in a filesystem-position-independent manner, relative to
the "SYS" logical host.
* fixed a compiler bug: MV-LET convertion did not check references
to the "max args" entry point. (reported by Brian Downing)
* tweaked disassembly notes to be less confident about proclaiming
some instruction as an LRA. (thanks to Brian Downing)
* contrib update: SB-ACLREPL is now threadsafe; multiple listeners
now each have their own history, command character, and other
characteristics. (thanks to David Lichteblau)
* fixed some bugs revealed by Paul Dietz' test suite:
** compiler failure in compiling LOGAND expressions including a
constant 0
** Implementation of ASH-MOD32 on X86 and PPC did not work for the
shift greater than 32.
** FLUSH-DEST did not mark blocks for type check regeneration.
** HANDLER-CASE failed to accept declarations in handler clauses
in some circumstances.
changes in sbcl-0.8.5 relative to sbcl-0.8.4:
* New code in contrib/sb-introspect (still probably not entirely
stable yet) provides some support for smart Lisp development
environments like SLIME.
* The conditions signalled for errors occurring when loading .fasl
files have been systematized (inheriting from SB-EXT:INVALID-FASL)
in a way which should help ASDF recover gracefully.
* The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
stuff has been cleaned up. If you code contrib/ stuff, this might
affect you, and you can look at contrib/README, contrib/STANDARDS,
and/or the 0.8.4.27 diff to check.
* In full calls the compiler now does not generate checks for declared
argument types for all arguments.
* various threading fixes
** and some experimental patches which didn't make it into
the main tree for this release, but which are shipped in
contrib/experimental-thread.patch as a possible fix for some
failures (deadlock, spinning...) in GC-intensive multithreaded
applications.
* fixed PPC build problem (source code incompatibility of different
library versions): added offsetof() hackery which attempts to divine
where glibc maintainers put uc_mcontext today
* fixed bug 282: compiler does not trust type assertions while passing
arguments to a full call.
* fixed bug 261: compiler allows NIL or "no value" to be accepted for
&OPTIONAL VALUES type parameter.
* fix bug 214: algorithm for noting rejected templates is now more
similar to that of template seletion. (also reported by rydis on
#lisp)
* fixed bug 141b: printing backquoted information readably and prettily
inserts a space where necessary.
* bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
(CHARACTER 10) are now reported as errors, rather than propagated
as unknown types. (reported by piso on #lisp)
* bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
with values NIL and :ERROR. (thanks to Milan Zamazal)
* fixed bug 191c: CLOS now does proper keyword argument checking as
described in CLHS 7.6.5 and 7.6.5.1.
* bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
longer raise an error; further, using a list as a for-as-arithmetic
counter now raises a meaningful error.
* fixed bug 213a: even fairly unreasonable CONS type specifiers are
now understood by sequence creation functions such as MAKE-SEQUENCE
and COERCE.
* fixed bug 46k: READ-BYTE now signals an error when asked to read from
a STRING-INPUT-STREAM.
* compiler enhancement: SIGNUM is now better able to derive the type
of its result.
* type declarations inside WITH-SLOTS are checked. (reported by
salex on #lisp)
* fixed some bugs revealed by Paul Dietz' test suite:
** incorrect optimization of TRUNCATE for a positive first
argument and negative second.
** compiler failure in let-convertion during flushing dead code.
** compiler failure while deriving type of TRUNCATE on an
interval, containing 0.
** ASH of a negative bignum by a negative bignum count now returns
-1, not 0.
** intersection of CONS types now canonicalizes properly, fixing
inconsistencies in SUBTYPEP.
changes in sbcl-0.8.4 relative to sbcl-0.8.3:
* incompatible change: The --disable-debugger command line
option now clobbers the debugger at a more fundamental
level, by redefining #'INVOKE-DEBUGGER instead of by
rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
is specified by ANSI to ignore *DEBUGGER-HOOK* and
INVOKE-DEBUGGER regardless. Under the old system, BREAK would
enter the debugger REPL and then suffer recursive errors
because *DEBUG-IO* is also messed up in --disable-debugger mode;
while under the new system, BREAK in --disable-debugger mode
terminates the system just as an unhandled error would.
* fixed compiler performance when processing loops with a step >1;
* bug fix: DOCUMENTATION now retrieves generic function
documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
support has been systematized, and now supports the methods
specified by ANSI, along with a default method and a method for
slot documentation. (reported by Nathan Froyd)
* bug fix: effective methods associated with a generic function are
no longer cached over a change of that generic function's method
combination. (reported by Andreas Fuchs)
* bug fix: RUN-PROGRAM now does not fail if some element in $PATH
names a non-existent directory. (thanks to Andreas Fuchs)
* bug fix: ROUND and TRUNCATE could, under certain circumstances on
the PPC platform, lead to stack corruption; this has been fixed.
(reported by Rainer Joswig)
* bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
* fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
arithmetic in general, is now much more reliable on the PPC
platform.
* bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
platform now returns the right answer.
* optimization: restored some effective method precomputation in
CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
precomputation is now tunable.
* optimization: compiler-internal data structure use has been
reviewed, and changes have been made that should improve the
performance of the compiler by about 20%.
* optimization: performance of FILL (and :INITIAL-ELEMENT) on
simple-base-strings and simple-bit-vectors is improved.
* optimization: the optimization of 32-bit logical and arithmetic
functions introduced in version 0.8.3 on the x86 has been
implemented on the mips, ppc and sparc platforms; an
implementation of the same facility, but for 64-bit arithmetic,
has been added for the alpha.
* microoptimization: the compiler is better able to make use of the
x86 LEA instruction for multiplication by constants.
* bug fix: in some situations compiler did not report usage of
generic arithmetic in (SPEED 3) policy.
* bug 145b fix: compiler used wrong type specifier while converting
MEMBER-types to numeric.
* bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
McNaught)
* bug fix: (SETF AREF) on byte-sized-element arrays with constant
index argument now works properly on the Alpha platform.
* bug fix: floating point exception treatment on the Alpha platform
is improved.
* bug fix: FILE-POSITION works much better on string input and
output streams. (thanks to Nikodemus Siivola)
* bug fix: many threading/garbage collection symptoms sorted.
SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
might be pseudo-atomic.
* internal change: Stopping for GC is now done with signals not
ptrace. GC is now done in whichever thread wanted it, instead of
in the parent.
* bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
work again.
* bug fix: result form in DO is not contained in the implicit
TAGBODY.
* incompatible change: ICR structure is changed; the value part of
CONTINUATION is now called LVAR; corresponding functions are
renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
* added type deriver for ISQRT (thanks to Robert E. Brown).
* bug fix: better support for loading from the command line when an
initialization file sets (READTABLE-CASE *READTABLE*). (thanks
to Adam Warner)
* fixed some bugs revealed by Paul Dietz' test suite:
** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
** ROUND and FROUND now give the right answer when given very
small float arguments.
** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
circumstances.
** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
** (GCD 0 <negative-integer>) returned <negative-integer>.
** LCM should return a non-negative integer.
** PARSE-INTEGER returned the index of a terminator instead of the
upper bounding index of a substring in case :JUNK-ALLOWED NIL.
** PARSE-INTEGER returned an incorrect index being applied to a
displaced string.
** LCM with two arguments of 0 returns 0 rather than signalling
DIVISION-BY-ZERO.
** unsigned addition of a 32-bit constant with the high bit set no
longer causes an internal compiler error on the x86.
** LOGBITP accepts a non-negative bignum as its INDEX argument.
** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
with negative last argument.
** byte specifiers with zero size and position no longer cause
an error during type derivation.
** bignum multiplication on the Alpha platform now returns the
right answer.
* porting: The system now builds on SuSE AMD64, although it still
generates a 32-bit binary.
* .fasl file incompatibility: The fasl file version number has
been incremented (because of the changes to internal compiler
data structures referred to above).
changes in sbcl-0.8.3 relative to sbcl-0.8.2:
* SBCL now builds and runs on MacOS X (version 10.2), or perhaps
more accurately, on the Darwin kernel running on PowerPC hardware.
(thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
* Compiler code deletion notes now signal a condition of type
SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
an associated MUFFLE-WARNING restart.
* The compiler now performs limited argument count validation of
constant format strings in FORMAT, and where appropriate in ERROR,
CERROR and WARN. (thanks to Gerd Moellmann)
* New ASDF-INSTALL contrib can be used for automatic download and
installation of third-party Lisp code from CCLAN or other sites
via CLiki.
* Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
which forces another thread to execute a function supplied by the
caller.
* bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
now accept and act upon their :ELEMENT-TYPE keyword argument.
(reported by Martin Atzmueller, Edi Weitz)
* bug fix: FILE-POSITION now accepts position designators up to
ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
is the greater. (thanks to Patrik Nordebo)
* bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
Kalle Olavi Niemitalo)
* bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
printable. (reported by Eric Marsden)
* bug fix in sb-posix: mmap() now works on systems with a 64-bit
off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
* x86 bug fix in control stack exhaustion checking: now shows backtrace
* bug fix in WITH-TIMEOUT: now the body can have more than one form.
(thanks to Stig Sandoe)
* bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
UNREAD-CHAR now correctly includes the unread character in the
target sequence. (thanks to Gerd Moellmann)
* bug fix in threaded builds: the system can now be suspended and
resumed by shell job control with minimal disruption.
* bug fixes in times and timezones >2038AD
* better handling of "where is GNU make?" problem in build scripts
(thanks to Nikodemus Siivola)
* new optimization: inside a named function any reference to a
function with the same name is considered to be a self-reference;
this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
optimization quality.
* new optimization on x86: logical functions and + now have
optimized (UNSIGNED-BYTE 32) versions, which are automatically
used when the result is truncated to 32 bits.
* VALUES declaration is partially enabled.
* fixes in SB-GROVEL (thanks to Andreas Fuchs)
* fixed some bugs revealed by Paul Dietz' test suite:
** The system now obeys the constraint imposed by
UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
types form a lattice under type intersection.
** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
** ASSOC now ignores NIL elements in an alist.
** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
and (1+ MOST-POSITIVE-FIXNUM) answers.
** The addition of a method with invalid qualifiers to a generic
function does not cause an error to be signalled immediately;
a warning is signalled, and the error is generated only on
calling the generic function.
* changed .fasl file version number, in part to add type codes for
new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
obscure ANSI requirements
changes in sbcl-0.8.2 relative to sbcl-0.8.1:
* fixed bug 148: failure to inline-expand a local function left
garbage, confusing the compiler.
* fixed bugs 3cd: structure slot readers perform type check if the
slot can have an invalid value (i.e. it is either not initialized
or can be written with a less specific slot writer).
* bug fix: the compiler now traps array references to elements off
the end of an array; previously, the bounds checking in some
circumstances could go off-by-one.
* improved MACHINE-VERSION, especially on Linux (thanks to Lars
Brinkhoff)
* type declarations for array element types now obey the description
on the CLHS page "Declaration TYPE", as per discussions on
sbcl-help around 2003-05-08. This means that a declaration
(TYPE (ARRAY FOO) BAR) means that, within the scope of the
declaration, all references to BAR will be asserted or assumed
(with THE, so dependent on compiler policy) to involve objects of
type FOO. Note that no such declaration is implied in
(MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
* declared types of functions from the "Conditions"
chapter. (reported by Paul Dietz)
* bug fix: CERROR accepts a function as its first argument.
* bug fix: NTH an NTHCDR accept a bignum as index
arguments. (reported by Adam Warner)
* optimization: character compare routines now optimize comparing
against a constant character. (reported by Gilbert Baumann)
* bug fix: (SETF AREF) on byte-sized-element arrays with constant index
argument now works properly on the MIPS platform.
* fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
* repeated evaluation of the same DEFSTRUCT, a slot of which is
declared to have a functional type, does not cause an error
anymore.
* fixed bug: sometimes MAKE-INSTANCE did not work with classes with
many :DEFAULT-INITARGS. (reported by Istvan Marko)
* fixed bug: if last continuation of a deleted block has a
destination, this destination should be deleted too. (reported by
ohler on #lisp)
* fixed a bug in the bootstrap process: the host compiler's values
of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
into the newly-built SBCL. (reported by Eric Marsden on #lisp,
test case from Patrik Nordebo)
* improved the ability of the disassembler on the PPC platform to
provide helpful disassembly notes.
* SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
the class in more cases than previously.
* bug fix: FILE-POSITION now understands :START and :END for
STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
* bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
8) data. (thanks to David Lichteblau)
* bug fix: it is possible to add a method to a generic function
without lambda list.
* bug fix: reader failed to signal END-OF-FILE inside an
object representation. (reported by Nikodemus Siivola)
* fixed some bugs revealed by Paul Dietz' test suite:
** LAST and [N]BUTLAST should accept a bignum.
** condition slot accessors are methods.
** (VECTOR NIL) is a subtype of STRING.
changes in sbcl-0.8.1 relative to sbcl-0.8.0:
* minor incompatible change: some nonsensical specialized lambda
lists (used in DEFMETHOD) which were previously ignored now signal
errors.
* minor incompatible change: the system is now aware of the types of
variables in the COMMON-LISP package, and will signal errors for
most violations of these type constraints (where previously they
were silently accepted).
* minor incompatible change: COMPILE-FILE now uses the freedom
afforded (ANSI 3.2.2.3) to use derived function types for
functions defined in the same file. This also permits the system
to warn on static type mismatches and function
redefinition. (Currently it does not work with high DEBUG level.)
* minor incompatible change: VALUES declaration is disabled.
* When issuing notes, the compiler now signals a condition of type
SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
restart for use in user handlers. It is expected that the
COMPILER-NOTE condition will eventually become a condition
supertype to a hierarchy of note types, which will then be
handleable in a similar fashion. However, at the moment, no such
note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
but it's an implementation detail, not a classification for the
purpose above.)
* Changes in type checking closed the following bugs:
** type checking of unused values (192b, 194d, 203);
** template selection based on unsafe type assertions (192c, 236);
** type checking in branches (194bc).
* A short form of VALUES type specifier has ANSI meaning (it has
increased the number of situations when SBCL cannot perform type
checking).
* fixed bug in DEFSTRUCT: once again, naming structure slots with
keywords or constants is permissible.
* STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
classes. (thanks to Antonio Martinez)
* improved ANSIness in DESCRIBE: The DESCRIBE function no longer
outputs FRESH-LINE or TERPRI, and no longer converts its stream
argument to a pretty-print stream. Instead, it leaves any such
operations to DESCRIBE-OBJECT methods.
* bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
by Teemu Kalvas)
* bug fix: NIL is now a valid destructuring argument in DEFMACRO
lambda lists. (thanks to David Lichteblau)
* bug fix: Defining a generic function with a :METHOD-CLASS being a
subclass of STANDARD-METHOD no longer causes stack exhaustion.
(thanks to Gerd Moellmann)
* fixed bug 246: increased compilation speed of long
MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
integer argument)
* a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
has been included.
* DEFCONSTANT now throws a condition of type
SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
constant to a non-EQL value; CONTINUE and ABORT restarts
respectively change and preserve the value.
* fixed bug 63: The code walker, part of the implementation of CLOS,
is now better at handling symbol macros.
* bug fix: There is no longer an internal implementation type named
CL:LENGTH. (reported by Raymond Toy)
* bug fix: In macro-like defining macros/special operators the
implicit block does not enclose the lambda list.
* fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
enclosed in parentheses) are not suitable as type specifiers, and
their use properly signals an error now.
* bug fix: An argument count mismatch for a type specifier in code
being compiled no longer causes an unhandled error at compile
time, but signals a compile-time warning.
* fixed simple vector readable printing
* bug fix: DESCRIBE takes more care over whether the class
precedence list slot of a class is bound before accessing it.
(reported by Markus Krummenacker)
* bug fix: FORMATTER can successfully compile pretty-printer format
strings which use variants of the ~* directive inside.
* bug fix: SEARCH now applies its TEST predicate to the elements of
the arguments in the correct order. (thanks to Wolfhard Buss)
* fixed bug 235b: The compiler uses return types of MAPCAR and friends
in type inference. (thanks to Robert E. Brown)
* bug fix: Reading in symbols with an explicit package name of ""
(e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
* fixed some bugs revealed by Paul Dietz' test suite:
** NIL is now allowed as a structure slot name.
** Arbitrary numbers, not just REALs, are allowed in certain
circumstances in LOOP for-as-arithmetic clauses.
** Multiple class redefinitions before slot access no longer
causes a type error.
** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
association between the name and a class.
** Generic functions with non-standard method-combination and over
five methods all of which return constants no longer return NIL
after the first few invocations. (thanks to Gerd Moellmann)
** CALL-NEXT-METHOD with no arguments now passes the original
values of the arguments, even in the presence of assignment.
** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
object.
** DISASSEMBLE works with closures and funcallable instances.
** ADD-METHOD now returns the generic function, not the new method.
** FIND-METHOD signals an error if the lengths of the specializers
is incompatible with the generic function, even if the ERRORP
argument is true.
** TYPE-OF returns recognizeable subtypes of all built-in-types of
which its argument is a member.
** DEFCLASS only redefines the class named by its class-name
argument if that name is the proper name of the class;
otherwise, it creates a new class.
** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
of the UNBOUND-SLOT condition to the name of the slot.
** (SETF (AREF bv 0) ...) did not work for bit vectors.
** SLOT-UNBOUND and SLOT-MISSING now have their return values
treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
SLOT-MAKUNBOUND in the specified fashion.
changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
* SBCL now builds using CLISP (version of late April 2003 from CVS) as
cross-compilation host. As a consequence, we can now bootstrap our
way up to SBCL starting with a bare gcc toolchain and human-readable
source code (first the source to CLISP, then the source to SBCL).
* A contributed module containing a partial implementation of the
simple-streams interface has been included. (thanks to Rudi
Schlatte)
* A contributed module implementing the RFC1321 Message Digest
Algorithm, known as MD5, has been included.
* minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
no longer has any effect, as the code controlled by this feature
has been deleted. (As far as we know, no-one has ever built using
this feature, and its semantics were confused in any case).
* minor incompatible change: As a consequence of making SLOT-EXISTS-P
work on conditions (as required by the ANSI specification),
SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
expected behaviour on conditions. Users should note, however,
that such behaviour is not required by the ANSI specification,
and so use of this behaviour may render their code unportable.
* fixed some bugs revealed by Paul Dietz' test suite:
** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
types.
** &ENVIRONMENT parameter in macro lambda list is bound first.
** SXHASH on condition objects no longer returns NIL.
** :ALLOCATION :CLASS slots are better treated; their values are
updated on class redefinition, and initforms inherited from
superclasses are applied.
** REMOVE-METHOD returns its generic function argument even when
no method was removed.
** SHARED-INITIALIZE now initializes the values of the requested
slots, including those with :ALLOCATION :CLASS.
** ALLOCATE-INSTANCE now works on structure classes defined via
DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
STRUCTURE-CLASS).
** SLOT-EXISTS-P now works on conditions, as well as structures
and CLOS instances.
** MAKE-LOAD-FORM now has the required methods on
STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
keyword, and now implements the SLOT-NAMES argument.
** methods with &OPTIONAL arguments no longer allow too many
arguments to be passed in the call without error.
** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
option is consistent with the required arguments of the generic
function lambda list.
* bug fix: REQUIRE accepts a string designator. (Thanks to
Antonio Martinez.)
* bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
specified-by-AMOP lambda list of (CLASS &REST INITARGS).
* bug fix: The compiler now checks for duplicated variables in macro
lambda lists.
* bug fix: SETQ on globals returns the correct value.
* fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
not a COMPILER-ERROR (followed by some other strange error on
choosing the CONTINUE restart).
* bug fix: make.sh and friends are now more consistent in the way that
they look for GNU "make".
changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
* experimental native threads support (on x86 Linux >=2.4 only).
This is not compiled in by default: you need to add :SB-THREAD to
the target features. See the "Beyond ANSI" chapter of the manual
for details.
* fix for longstanding nonANSIism: The old distinction between
CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
The return value from CL:FIND-CLASS is now a CLOS class, and
likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
* An interface to the MetaObject Protocol, as described in Kiczales,
des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
MIT Press, 1991, is available from the SB-MOP package.
* incompatible change: the SB-PCL package should now be considered
a private implementation detail, and no longer a semi-private MOP
interface.
* minor incompatible change: due to rearrangement for threads, the
control stack and binding stack are now allocated at arbitrary
addresses instead of being hardcoded per-port. Users affected by
this probably have to be doing advanced things with shared
libraries, and will know who they are.
* minor incompatible change: Previously, all --eval forms used were
processed with READ before any of them were processed with EVAL.
Now each --eval form is processed with both READ and EVAL before
the next --eval form is processed. (Thus package operations like
sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
work as the user might reasonably expect.)
* minor incompatible change: *STANDARD-INPUT* is now only an
INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
Martinez)
* minor incompatible change: Y-OR-N-P is now character-oriented,
not line oriented. Also, YES-OR-NO-P now works without errors.
(thanks to Antonio Martinez)
* sb-aclrepl module improvements: an integrated inspector, added
repl features, and a bug fix to :trace command.
* Known functions, which cannot be open coded by the backend, are
considered to be able to check types of their arguments. (fixing
a bug report by Nathan J. Froyd)
* fixed a bug in computing method discriminating functions: It is
now possible to define methods specialized on classes which have
forward-referenced superclasses. (thanks to Gerd Moellmann)
* fixed evaluation order in optional entries (reported by Gilbert
Baumann)
* SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
* SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
required-by-AMOP NAME argument, as well as CLASS and
DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
* fixed bug 20: DEFMETHOD can define methods using names that are
not the proper names of classes to designate class specializers.
* bug fix: INTERACTIVE-STREAM-P now works on streams associated with
Unix file descriptors, instead of blowing up. (thanks to Antonio
Martinez)
* Garbage collection refactoring: user-visible change is that a
call to the GC function during WITHOUT-GCING will not do garbage
collection until the end of the WITHOUT-GCING. If you were doing
this you were probably losing anyway.
* fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
(SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
TYPEP the latter but not the former.
* The compiler issues a full WARNING for calls to undefined functions
with names from the CL package.
* MAP-INTO for a vector destination is open coded. (reported by
Brian Downing on c.l.l)
* bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
documentation string.
* fixed some bugs revealed by Paul Dietz' test suite:
** COPY-ALIST now signals an error if its argument is a dotted
list.
** Condition slots are now accessed more correctly in the presence
of multiple initargs for a given slot.
** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
exclude restarts of the same name associated with a different
condition.
** DEFCLASS of forward-referenced classes with another
forward-referenced class in the superclasses list no longer
causes an error.
** Condition slots are now initialized once each, not multiple
times. (thanks to Gerd Moellmann)
** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
Gerd Moellmann)
** &WHOLE and &REST arguments in macro lambda lists are patterns.
** NSET-EXCLUSIVE-OR does not return extra elements when its
arguments contain duplicated elements.
** RESTART-CASE understands local macros.
** RESTART-CASE associates exactly its own restarts with a condition.
** ENDP in safe mode checks its argument to be of type LIST.
** COPY-SYMBOL in a threaded build no longer fails when the symbol
in question is unbound.
** Optimized MAKE-INSTANCE functions no longer cause internal
assertion failures in the presence of duplicate initargs.
** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
** Side-effectful :DEFAULT-INITARGS have their side-effects
propagated even in the ctor optimized implementation of
MAKE-INSTANCE.
** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
changes in sbcl-0.7.14 relative to sbcl-0.7.13:
* a better implementation of SXHASH on (simple) bit vectors,
measured both in execution speed and in distribution of results
over the positive fixnums, has been installed. Likewise, a better
implementation of EQUAL for simple bit vectors is now available.
* fixed CEILING optimization for a divisor of form 2^k.
* fixed bug 240 (emitting extra style warnings "using the lexical
binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
by Antonio Martinez)
* fixed SXHASH, giving different results for NIL depending on type
declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
* fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
variable. (found by Rolf Wester)
* SBCL does not ignore type declarations for special
variables. (reported by rif on c.l.l 2003-03-05)
* some bug fixes in contrib/sb-aclrepl/
* fixed some bugs revealed by Paul Dietz' test suite:
** a bug in the CONS type specifier, whereby the CAR and CDR
types got intertwined, has been fixed;
** the type system is now able to reason about the interaction
between INTEGER and RATIO types more completely;
** APPEND, [N]REVERSE and NRECONC check that those their
arguments, which must be proper lists, are really so;
** An array specialized to be unable to hold elements has been
implemented, as required -- yes, really -- by ANSI;
** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
on malformed property lists;
changes in sbcl-0.7.13 relative to sbcl-0.7.12:
* incompatible packaging change: in line with Unix convention,
SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
* REQUIRE and PROVIDE are now optionally capable of doing something
useful. See the documentation string for REQUIRE.
* infrastructure for a managed SBCL contrib system: contributed
modules in this release include:
** the ASDF system definition facility;
** an interface to the BSD Sockets API;
** an ACL-like convenience interface to the repl;
(thanks to Kevin Rosenberg)
** an implementation of ROTATE-BYTE, with efficient implementation
on x86 hardware;
* fixed a bug in LOG, so that LOG of a rational argument near 1 now
gives a closer approximation to the right answer than previously.
(thanks to Raymond Toy)
* fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
optional environment arguments, as required by ANSI.
* fixed bugs in other functions taking environment objects, allowing
calls with an explicit NIL environment argument to be compiled
without error.
* fixed bug 228: primary return values from
FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
COMPILE or FUNCTION.
* fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
:TYPE will no longer signal errors on innocuous objects.
* fixed bug 231b: SETQ is better at respecting type declarations in
the lexical environment.
* fixed a bug in DEFCLASS: classes named by symbols with no or
unprintable packages can now be defined.
* fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
* fixed compiler failure related to checking types of functions.
(reported by Robert E. Brown)
* the compiler is now much more consistent in its error-checking
treatment of bounding index arguments to sequence functions: in
(SAFETY 3) code, errors will be signalled in almost all cases if
invalid sequence bounding indices are passed to functions defined
by ANSI to operate on sequences.
* fixed a bug in the build procedure: documentation of SBCL-specific
packages is now preserved and available in the final Lisp image.
* lifted FDEFINITION lookup out of loops in the implementation of
many list operations. (thanks to Robert E. Brown)
* fixed a bug in the reader: the #n# reader macro now works for
objects of type STANDARD-OBJECT. (reported by Tony Martinez)
* the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
E. Brown and Tony Martinez respectively)
* PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
SLOT-BOUNDP: in particular, it is now able to optimize them much
better, and is now not vulnerable to having packages renamed.
Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
always called when a slot is not present in an instance. (thanks
to Gerd Moellmann)
* fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
longer signal an error on unreading a character following EOF on
the previous constituent stream. (thanks to Tony Martinez)
* fixed some bugs revealed by Paul Dietz' test suite:
** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
not just nonnegative fixnums;
** the logical bit-array operators such as BIT-AND now accept an
explicit NIL for their "opt-arg" argument (to indicate a
freshly-consed result bit-array);
** ELT now signals an error on an invalid sequence index in safe
code;
** the type system is now cleverer about negations of numeric
types, and consequently understands the BIGNUM and RATIO types
better;
** the type system is now cleverer about the interaction between
INTEGER and RATIO types: while bugs still remain, many more
cases are accurately computed;
** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
if it is in the last clause;
** CONSTANTLY now correctly returns a side-effect-free function in
all cases;
** DECLARE is no longer treated as a special-operator; in
particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
* incremented fasl file version number due to the change in the
DEFSTRUCT-SLOT-DESCRIPTION structure.
changes in sbcl-0.7.12 relative to sbcl-0.7.11:
* minor incompatible change: code processed by the "interpreter" or
EVAL now has a compilation optimization policy of (DEBUG 2)
(changed from (DEBUG 1)) to improve debuggability of interactive
development, and to allow the use of the debug RETURN command in
such code.
* an experimental implementation of the RETURN command for the
debugger has been included. (thanks to Frederik Kuivinen)
* fixed bug 62: constraints were not propagated into a loop.
* fixed bug in embedded calls of SORT (reported and investigated by
Wolfgang Jenkner).
* fixed some bugs revealed by Paul Dietz' test suite:
** printing and reading of arrays with some dimensions having
length 0 (thanks to Gerd Moellmann);
** BOA constructor with &AUX argument without a default value does
not cause a type error;
** CONSTANTP now returns true for all self-evaluating objects.
changes in sbcl-0.7.11 relative to sbcl-0.7.10:
* fixed bug 127: DEFSTRUCT now does not clobber old structure
accessors that are related by inheritance, as specified in the
:CONC-NAME section of the specification of DEFSTRUCT. (thanks to
Valtteri Vuorikoski)
* The compiler is now able to inline functions that were defined in
a complex lexical environment (e.g. inside a MACROLET).
* fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
to Lutz Euler)
* Support for the upcoming FreeBSD-5.0 release has been included.
(thanks to Dag-Erling Smorgrav)
* fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
effect when it is not in a toplevel context.
* fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
stand a better chance of being correct. (thanks to Gerd
Moellmann)
* fixed bug in COERCE, which now signals an error on coercing a
rational to a bounded real type which excludes the expected
answer.
* The compiler is now able to derive types more accurately from the
COERCE and COMPILE functions.
* fixed bug 223: functional binding is considered to be constant
only for symbols in the CL package.
* fixed bug 231: SETQ did not check the type of a variable being set
(reported by Robert E. Brown)
* A new optimization for MAKE-INSTANCE has been included, fixing
various bugs (including relating to :ALLOCATION :CLASS slots and
:DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
Moellmann)
* fixed some LOOP bugs revealed by Paul Dietz' test suite:
** As required by ANSI, LOOP now disallows anonymous collection
clauses such as COLLECT I in conjunction with aggregate boolean
clauses such as THEREIS (= I 1);
** LOOP now signals an error when any variable is reused in the
same loop (including the potentially useful construct analogous
to WITH A = 1 WITH A = (1+ A);
** IT is only a special loop symbol within the first clause of a
conditional loop clause;
** LOOP with a typed iteration variable over a hashtable now
signals a type error iff it should.
* fixed some other bugs revealed by Paul Dietz' test suite:
** FILE-STREAM now names the class previously known as FD-STREAM;
** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
argument) no longer signals an error;
** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
of the slot symbol, rather than using the current package
((:CONC-NAME "") continues to intern the slot's name in the
current package);
* incremented fasl file version number, because of the incompatible
change to the DEFSTRUCT-DESCRIPTION structure, and again because
of the new implementation of DEFINE-COMPILER-MACRO.
changes in sbcl-0.7.10 relative to sbcl-0.7.9:
* Support for building SBCL for MIPS platforms running in
little-endian mode has now been checked in, and basic
functionality on said platforms verified.
* minor incompatible change: PCL now records the pathname of a file
in which methods and the like are defined, rather than its
truename.
* minor incompatible change: TRUENAME now considers the truename of
a file naming a directory to be the pathname with :DIRECTORY
component indicating that directory.
* minor incompatible change: a NAMED clause in the extended form of
LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
reason for the previous behaviour is unclear.
* more systematization and improvement of CLOS and MOP conformance
in PCL (thanks to Gerd Moellman and Pierre Mai):
** the standard ANSI CL generic function NO-NEXT-METHOD is now
implemented;
** DEFINE-METHOD-COMBINATION no longer signals an error for
primary methods with no specializers;
** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
implemented;
** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
FORWARD-REFERENCED-CLASSes; error reporting on
CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
has been improved;
** SXHASH on CLOS instances now uses a slot internal to the
instance to return different numbers on distinct instances,
while preserving the same return value through invocations of
CHANGE-CLASS;
** DEFMETHOD signals errors when methods with longer incongruent
lambda lists are added to generic functions;
** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
CLASS, as specified in AMOP;
** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
on the order returned by the primary method for classes of
class STANDARD-CLASS;
** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
* fixed some bugs shown by Paul Dietz' test suite:
** DOLIST puts its body in TAGBODY;
** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
correct order;
** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
value producing form;
** if more variables are given to PROGV than values, extra
variables are bound and made to have no value;
** NSUBSTITUTE on list arguments gets the right answer with
:FROM-END;
** ELT signals an error of type TYPE-ERROR when the index argument
is not a valid sequence index;
** LOOP signals (at macroexpansion time) an error of type
PROGRAM-ERROR when duplicate variable names are found;
** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
** FUNCALL of special-operators now cause an error of type
UNDEFINED-FUNCTION;
** PSETQ now works as required in the presence of side-effecting
symbol-macro places;
** NCONC accepts any object as its last argument;
** :COUNT argument to sequence functions may be BIGNUM; (thanks to
Gerd Moellman)
** loop-for-as-package does not require a package to be explicitely
specified;
** LOOP WITH now treats NIL in the d-var-spec correctly as an
ignored binding.
* fixed bug 166: compiler preserves "there is a way to go"
invariant when deleting code.
* fixed bug 172: macro lambda lists with required arguments after
&REST arguments now cause an error to be signalled. (thanks to
Matthew Danish)
* fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
bug. (thanks to Matthew Danish)
* fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
Baumann)
* fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
arguments are lexically rebound. (thanks to Gerd Moellmann and
Pierre Mai)
* fixed bug 194: error messages are now more informative when there
is no primary method applicable in a call to a generic
function. (thanks to Gerd Moellmann)
* fixed bug in command line argument checking (thanks to Julian
Fondren)
* fixed bug in COUNT-IF, making it handle :FROM-END correctly
(thanks to Matthew Danish)
* incremented fasl file version number, because of the
SXHASH-related changes in the layout of CLOS data structures
changes in sbcl-0.7.9 relative to sbcl-0.7.8:
* minor incompatible change: The runtime (the Unix executable named
"sbcl") is now much pickier about the .core files it will load.
Essentially it now requires .core files to descend from the same
build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
as the runtime does. (The intent is to prevent the crashes which
can occur, and which can even be reported as mysterious failures,
when people patch the sources or change the build parameters
without changing LISP-IMPLEMENTATION-VERSION, then mix and match
sbcl and .core files.)
* fixed bug: VALUES-LIST is no longer optimized away.
* fixed bug 142: The FFI conversion of C string values to Lisp
string values no longer conses excessively. (thanks to Nathan
Froyd porting Raymond Toy's fix to CMU CL)
* began to systematize and improve MOP conformance in PCL (thanks to
Nathan Froyd, Gerd Moellman and Pierre Mai):
** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
itself;
** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
** FINALIZE-INHERITANCE is now called on class finalization;
** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
argument precedence order.
* fixed bug 202: The compiler no longer fails on functions whose
derived types contradict their declared type.
* DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
so it can be non-toplevel.
* The fasl file version number has changed (because of the new
implementation of DEFMACRO).
* (mostly) fixed bugs 46b and 46c: sequence functions now check, in
safe code, that any length requirement by their type-specifier
argument is valid. The exceptions to this are described in bug
213.
* fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
functions now check the types of their inputs as required by ANSI.
* fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
introduced symbol is DECLAREd to be SPECIAL.
* fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
* fixed bug: :COUNT argument to sequence functions may be negative
* fixed bug: body of DO-SYMBOLS may contain declarations
* fixed bug: PUSHNEW now evaluates its arguments from left to right
(reported by Paul F. Dietz, fixed by Gerd Moellman)
* fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
symbol macro only once
* fixed printing of call frame when argument list is unavailable
* fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
* compiler no longer signals WARNING on unknown keyword
:ALLOW-OTHER-KEYS
changes in sbcl-0.7.8 relative to sbcl-0.7.7:
* A beta-quality port to the mips architecture running Linux,
based on the old CMUCL backend, has been made. It has been tested
on a big-endian kernel, and works sufficiently well to be able to
rebuild itself; it has not been tested in little-endian mode.
* fixed an inconsistency between gencgc.c and purify.c which made
dumping/loading .core files unreliable
* fixed bug 120a: The compiler now deals correctly with IFs where
the consequent is the same as the alternative, instead of
misderiving the return type. (thanks to Alexey Dejneka)
* fixed bug 113: Logical pathnames are now dumpable (the logical
host is resolved at load-time, throwing an error if it is not
found).
* fixed bug 174: FORMAT's error message is slightly clearer when a
non-printing character is used in a format directive.
* fixed several bugs in compiler checking of type declarations, i.e.
violations of the Python "declarations are assertions" principle
(thanks to Alexey Dejneka)
* fixed several bugs in PCL's error checking (thanks to Gerd
Moellmann)
* fixed bug: printing of FILE-ERROR (thanks to Antonio
Martinez-Shotton)
* fixed bug in compilation of functions as first class values
(thanks to Antonio Martinez-Shotton)
* The compiler's handling TYPE-ERRORs which it can prove will
inevitably happen at runtime has been cleaned up and corrected
in several ways. (thanks to Alexey Dejneka)
* improved argument type checking for various basic arithmetic
operations (MAX, +, LOGXOR, etc.) which have had so much TLC
lavished on them in the past that they can be compiled in many
ways in different special cases
* fixed bug 181: compiler checks validity of user supplied type
specifiers
* cleaned up code flushing in optimization: Function calls which
should signal errors for safety purposes (e.g. which ANSI says
should signal errors when their arguments are of incorrect type)
are no longer optimized away.
* added new extension: SB-DEBUG:BACKTRACE-AS-LIST
* incremented fasl file version number, because changes in the
implementation of sequence functions like COERCE caused
internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
in old inline expansions) to become undefined. (Actually these
changes were later undone, so we might very well be binary
compatible with 0.7.7 after all, but leaving the version number
incremented seemed like the simplest and most conservative
thing to do.)
changes in sbcl-0.7.7 relative to sbcl-0.7.6:
* An alpha-quality port to the parisc architecture running Linux,
based on the old CMUCL backend, has been made. This, even more so
than the other backends, should be considered still a work in
progress; known problems include that the Linux kernel in 64-bit
mode does not propagate the correct sigcontext structure to
userspace, and consequently SBCL on a parisc64 kernel will not
work yet.
* fixed bug 189: The compiler now respects NOTINLINE declarations for
functions declared in FLET and LABELS. (I.e. "LET conversion" is
suppressed.) Also now that the compiler is looking at declarations
in the environment, it checks optimization declarations as well,
and suppresses inlining when (> DEBUG SPEED).
* More fixes have been made to treatment of floating point exception
treatment and other Unix signals. In particular, floating point
exceptions no longer cause Bus errors on the SPARC/Linux platform.
* The detection and handling of control stack exhaustion (infinite
or very deeply nested recursion) has changed. Stack exhaustion
detection is now done by write-protecting pages at the OS level
and applies at all optimization settings; when found, a
SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
be caught using IGNORE-ERRORS.
* Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
correctly when transforming recursive LABELS functions to LETs.
(thanks to Alexey Dejneka)
* Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
that are names of constants or global variables.
* Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
alien routines with docstrings.
* Bug 184 fixed: Division of ratios by the integer 0 now signals an
error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
Raymond Toy)
* Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
(thanks to Eric Marsden)
* Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
* Bug fix: The SPARC backend can now compile functions involving
LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
* Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
to a functions expecting a PATHNAME-DESIGNATOR.
* Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
lambda lists. (thanks to Alexey Dejneka)
* Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
functions so that EXPORTing the name of the class doesn't cause
MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
to Antonio Martinez for reporting this)
* Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
constant-folded without failing an assertion. (thanks to Einar
Floystad Dorum for reporting this)
* Bugs 123 and 165 fixed: array specializations on as-yet-undefined
types are now dealt with more correctly by the compiler.
* Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
behaviour analogous to RENAME-FILE. This puts its behaviour more
in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
Marco Antinotti)
* The fasl file version number has changed again. (because of the
bug fix involving the names of PCL MAKE-INSTANCE functions)
changes in sbcl-0.7.6 relative to sbcl-0.7.5:
* bug fix: Floating point exceptions are treated much more
consistently on the x86/Linux and PPC/Linux platforms.
* Array initialization with :INITIAL-ELEMENT is now much faster for
cases when the compiler cannot open code the array creation, but
does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
array accesses have also seen a speed increase.
* bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
specified. (This was at the root of some bad interactions between
SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
reporting the bug.)
* bug fix: Internal error arguments for undefined functions are now
computed correctly on the PPC/Linux platform.
* bug fix: Bad &REST syntax is now checked correctly. (thanks to
Raymond Toy's patch for CMU CL)
* Support for the Solaris 9 operating environment has been included
(thanks to Daniel Merritt)
* A very ugly but hopefully complete draft of the missing FFI chapter
of the manual has been created by reformatting the corresponding
CMU CL manual chapter into (currently very ugly and incoherent)
DocBook and bringing it up to date for SBCL behavior. Thus, the
manual is now essentially complete, at least by my extreme
once-and-only-once standards, whereby it's acceptable to refer to
the doc strings of SB-EXT functions as the primary documentation.
* The fasl file version number has changed again, due to cleanup of
(user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
is no longer a static symbol.)
changes in sbcl-0.7.5 relative to sbcl-0.7.4:
* SBCL now builds with OpenMCL (version 0.12) as the
cross-compilation host; also, more progress has been made toward
bootstrapping under CLISP.
* SBCL now runs on the Tru64 (aka OSF/1) operating system on the
Alpha architecture.
* bug 158 fixed: The compiler can now deal with integer loop
increments different from 1; fixing this turned out also to fix
bug 164.
* bug 169 fixed: no more bogus warnings about using lexical bindings
despite the presence of perfectly good SPECIAL declarations (thanks
to David Lichteblau)
* bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
* bug 179 fixed: DIRECTORY can now deal with filenames with pattern
characters in them.
* bug 180 fixed: Method combination specifications no longer ignore
the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
* bug fix: Structure type predicate functions now check their argument
count as they should.
* bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
correctly. (thanks to Pierre Mai)
* minor incompatible change: The --noprogrammer option is deprecated
in favor of the new --disable-debugger option, which is very similar.
(The major difference is that it takes effect at a slightly different
time at startup, causing handling of errors in --sysinit and
--userinit files will be affected differently.) The
SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
been added to allow this functionality to be controlled from ordinary
Lisp code. (ENABLE-DEBUGGER should help people like the Debian
maintainers, who might want to run non-interactive scripts to
build SBCL cores which will later be used interactively.)
* minor incompatible change: The LOAD function no longer, when given
a wild pathname to load, loads all files matching that pathname.
Instead, an error of type FILE-ERROR is signalled.
changes in sbcl-0.7.4 relative to sbcl-0.7.3:
* bug 147 fixed: The compiler preserves its block link/count
invariants more correctly now so that it doesn't crash. (thanks
to Alexey Dejneka)
* Dynamic loading of object files in OpenBSD is now supported. (thanks
to Pierre Mai)
* COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
* GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
no-value-for-this-character as NIL (as specified by ANSI).
* HOST-NAMESTRING on physical pathnames now returns a string that is
valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
(thanks to Christophe Rhodes)
* The Alpha port handles icache flushing more correctly. (thanks to
Dan Barlow)
* More progress has been made toward bootstrapping under CLISP. (thanks
to Christophe Rhodes)
* The fasl file format has changed again, because dynamic loading
on OpenBSD (which has non-ELF object files) motivated some cleanups
in the way that foreign symbols are transformed and passed around.
* minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
is no longer treated as whitespace by the reader, but instead as
an ordinary character. Thus e.g. (READ-FROM-STRING "AB") returns
|AB|, instead of A as it used to.
changes in sbcl-0.7.3 relative to sbcl-0.7.2:
* ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
Froyd porting CMU CL code originally by Douglas Thomas Crosher)
* SBCL now runs on the PPC archtiecture under Linux. It actually did
this as of 0.7.1.45, but was left out of the previous news section
(thanks to Dan Barlow)
* SBCL now runs on the Solaris operating system on SPARC architectures
(thanks to Christophe Rhodes's port of the CMUCL runtime)
* cleanups to the runtime on SPARC, both Linux and Solaris, and for
gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
* SPARC backend cleanups, allowing builds of cores optimized for V8
and V9 SPARCS, and also emission of code targeted to a particular
backend chosen at runtime (thanks to Christophe Rhodes and Raymond
Toy)
* SBCL is closer to bootstrapping under CLISP, thanks to various
fixes by Christophe Rhodes.
* The fasl file format has changed again, to allow the compiler's
INFO database to support symbol macros.
* The user manual (in doc/) is formatted into HTML more nicely.
(thanks to coreythomas)
* The system is smarter about SUBTYPEP relationships, especially
those involving NOT types (including types such as ATOM which are
represented internally using NOT types). Thus SUBTYPEP is less
likely to return (VALUES NIL NIL) in general, and in particular
bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
Christophe Rhodes)
* The fasl file format has changed again, because the internal
representation of types now includes a new slot to support the new
SUBTYPEP-of-NOT-types logic.
* (not a change in the main branch of SBCL, but a related prototype
which can hopefully be merged into the main branch of SBCL in the
future:) Brian Spilsbury has produced a Unicode-enabled variant of
sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
<http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
* Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
dispatch macro character combinations. (thanks to Alexey Dejneka)
* Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
that superficially look like logical namestrings correctly.
* USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
can deal with.
* Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
default supplied-p) for &optional and &key arguments. (thanks to
Martin Atzmueller)
changes in sbcl-0.7.2 relative to sbcl-0.7.1:
* incompatible change: The compiler is now less aggressive about
tail call optimization, doing it only when (> SPACE DEBUG) or
(> SPEED DEBUG). (This is an incompatible change because there are
programs which relied on the old CMU-CL-style behavior to optimize
away their unbounded recursion which will now die of stack overflow.)
* minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
for non-GENCGC systems has been increased to 20M (since that
seems much closer to the likely performance optimum for modern
systems than the old 4M value was)
* minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
and *DEBUG-PRINT-LEVEL*
* SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
of CMU CL's support for SPARC, and various endianness and other
SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
* new syntactic sugar for the Unix command line: --load foo.bar is now
an alternate notation for --eval '(load "foo.bar")'.
* bug fixes:
** The system now detects stack overflow and handles it gracefully,
at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
optimization settings. (This is a good thing in general, and
its introduction in this version should be particularly timely
for anyone whose code fails because of suppression of tail
recursion!)
** The system now hunts for the C variable "environ" in a more
devious way, to avoid segfaults when the C library version differs
between compile time and run time. (thanks to Christophe Rhodes)
** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
** The compiler no longer issues bogus style warnings for undefined
classes in the same source file as the DEFCLASSes which defined
them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
for fixing this)
** fixes in CONDITION class precedence list for undefined function
errors (thanks to Alexei Dejneka)
** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
correctly. (thanks to Dan Barlow)
** portability fixes aiming at bootstrapping under CLISP (thanks
to Dave McDonald and Christophe Rhodes)
** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
** fixes in type translation and and type inference (thanks to
Christophe Rhodes)
** fixes to optimizer internal errors (thanks to Alexei Dejneka)
** various fixes in the new ports (thanks to Dan Barlow)
* several changes related to debugging:
** suppression of tail recursion, as noted above
** stack overflow detection, as noted above
** The default implementation of TRACE has changed. :ENCAPSULATE T
is now the default. (For some time encapsulation has been more
reliable than the breakpoint-based :ENCAPSULATE NIL
implementation, at least on X86 systems; and I just noticed that
encapsulation also seems closer to the spirit of the ANSI
specification.)
changes in sbcl-0.7.1 relative to sbcl-0.7.0:
* mostly bug fixes:
** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
up properly again. (There was a packaging bug in 0.7.0 which
left their definitions in SB-SYS::LOAD-FOREIGN and
SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
vital for most things which interface to C-level interfaces,
like extensions working with sockets or databases or
Perl-compatible regexes or whatever, and the need to fix
this bug is the main reason that 0.7.1 was released so
soon after 0.7.0.)
** DEFGENERIC is now choosier about the methods it redefines, so that
reLOADing a previously-LOADed file containing DEFGENERICs does
the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
cycle now works as it should. (thanks to Alexey Dejneka)
** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
fixed by Christophe Rhodes. (He actually submitted this patch
months ago, and I delayed until after 0.7.0.)
** Bug 111 (internal compiler confusion about runtime checks on
FUNCTION types) was fixed by Alexey Dejneka.
* Some internal cleanups (getting rid of variables which aren't
needed now that the byte interpreter is gone) caused the fasl
file format number to change again.
changes in sbcl-0.7.0 relative to sbcl-0.6.13:
* major incompatible change: The default fasl file extension, i.e. the
default extension for files produced by COMPILE-FILE, has changed
to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
* compiler changes:
** There are many changes in the implementation of the compiler.
SBCL is now essentially a compiler-only implementation of ANSI
Common Lisp. EVAL still "interprets" a few special cases, but
almost all the interesting cases are handled by creating
a LAMBDA expression, calling COMPILE on it, then calling
FUNCALL on the result.
** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
Since the code is newer, there might still be some new bugs
(though not as many as before Martin Atzmueller's fixes:-). But
the new code is substantially simpler and clearer, and hopefully
any remaining bugs will be simpler, less fundamental, and more
fixable then the bugs in the old code.
** The revised compiler is still a little unsteady on its feet.
In particular,
*** The debugging information it produces (particularly the names
of FUNCTION objects) is sometimes much less useful than what
the old compiler produced.
*** The support for inlining FOO when you (DECLAIM (INLINE FOO))
then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
within a MACROLET) has been temporarily weakened.
** There are new compiler optimizations for various functions:
*** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
FIND-IF-NOT, POSITION-IF-NOT, and FILL
*** the math functions TRUNCATE, FLOOR, and CEILING
*** the function-of-all-trades COERCE
Mostly these should be transparent, but there's one
potentially-annoying problem (bug 117): when the compiler
inline-expands a function and does type analysis on the result,
it can create control paths which have type mismatches, and
when it can't prove that those control paths aren't taken,
it will issue WARNINGs about the type mismatches. This is
a particular problem in practice for the new sequence functions.
It's not clear how this should be fixed, and for now, a
workaround is given in the entry for 117 in the BUGS file.
** (Because of the interaction between the two previous items --
occasional inlining problems and new inline expansions -- some
of the new sequence function optimizations won't really kick in
completely until debugging information, and then inlining, are
straightened out in some future version.)
* minor incompatible changes:
** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
DIRECTORY no longer implicitly promotes NIL slots of its
pathname argument to :WILD. In particular, when you ask for the
contents of a directory (which you used to be able to do without
explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
** changes in behavior that ANSI explicitly defines to be
implementation dependent:
*** The new compiler-only implementation still conforms with ANSI,
but acts a little different than before. Besides the obvious
changes in performance tradeoffs (that the cost per form passed
to EVAL has gone up, and the cost per form executed by EVAL
has gone down), the behavior of the system changes a little
because there are no longer any interpreted function objects.
COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
e.g. doing COMPILE on the output of interactive DEFUN is
now a no-op.
*** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
from 100 to 1000.
*** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
has changed from (:CL) to NIL.
*** The CHAR-NAME of unprintable ASCII characters which, unlike
e.g. #\Newline and #\Tab, don't have names specified in the
ANSI Common Lisp standard, is now based on their ASCII symbolic
names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
(#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
are no longer used for output.
** changes in internal implementation constants:
*** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4 million. (If your application spends a lot of time GCing and
you have a lot of RAM, you might want to experiment with
increasing it even more.)
** The SB-C-CALL package has been merged into the SB-ALIEN package.
However, almost all old code should still continue to work without
immediate update, as SB-C-CALL is now a (deprecated) nickname
for SB-ALIEN.
** Old operator names in the style DEF-FOO are now deprecated in
favor of new corresponding names DEFINE-FOO, for consistency with
the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
internal symbols, but a few supported extensions like
SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
etc. as you get deeper into recursive calls to the debugger
command loop, instead of the old "5]", "5]]", "5]]]"
sequence. (I was motivated to do this when squabbles between
ILISP and SBCL left me very deeply nested in the debugger. In the
short term, this change will probably provoke more ILISP/SBCL
squabbles, but hopefully it will be an improvement in the long run.)
** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
function, since declaiming return types involving aliens is
(1) annoyingly messy to do by hand and (2) vital to efficient
compilation of code which calls such functions.
** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
longer reexported by the SB-EXT package. They're solely useful
for alien code, so it seems more logical that you should get
them from the SB-ALIEN package, not in SB-EXT.
** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
:SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
features. Instead, the code that they used to control is always
built into the system.
* many other bug fixes
** DEFSTRUCT and DEFCLASS have been substantially updated to take
advantage of the new EVAL-WHEN stuff and to clean them up in
general, and they are now more ANSI-compliant in a number of
ways. Martin Atzmueller is responsible for a lot of this.
** Besides the cleanups discussed above, Martin Atzmueller fixed
several other bugs:
*** fixes in READ-SEQUENCE and WRITE-SEQUENCE
*** correct ERROR type for various file operations
*** some fixes for Lisp streams
*** DEFMETHOD syntax checking
*** changing old weird representation of debug information as
strings (which, among their other deficiencies, don't transform
correctly when you rename packages, and don't change their
print representation when you change things like *PACKAGE*
and *PRINT-LENGTH*) to symbols and lists of symbols
He also made several improvements and fixed several bugs in DESCRIBE.
** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
discovered himself:
*** misbehavior of WRITE-STRING/WRITE-LINE
*** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
and several other LOOP problems as well
*** DIRECTORY when similar filenames are present
*** DEFGENERIC with :METHOD options
*** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))