Java SE 6 Update 26
* Olson Data 2011g
* Bug fixes
This release contains fixes for security vulnerabilities. For more
information, please see Oracle Java SE Critical Patch Update advisory:
http://www.oracle.com/technetwork/topics/security/javacpujune2011-313339.html
Java SE 6 Update 25
* Olson Data 2011b
* Java Hotspot VM 20
* Performance Improvement to BigDecimal
* Performance Improvement to java.util.logging.LogRecord
* Bug Fixes
(contains already fixed issues, #11662 patch-b{a,b}, #8674,#7673 patch-bc)
What's New in Python 2.5.6?
===========================
*Release date: 26-May-2011*
What's New in Python 2.5.6c1?
=============================
*Release date: 17-Apr-2011*
Library
-------
- Issue #11442: Add a charset parameter to the Content-type in SimpleHTTPServer
to avoid XSS attacks.
- Issue #11662: Make urllib and urllib2 ignore redirections if the
scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).
- Issue #8674: Fixed a number of incorrect or undefined-behaviour-inducing
overflow checks in the audioop module (CVE-2010-1634).
- Issue #7673: Fix security vulnerability (CVE-2010-2089) in the audioop
module, ensure that the input string length is a multiple of the frame size.
(CVE-2011-1521 had been fixed in pkgsrc).
What's New in Python 2.6.7?
===========================
*Release date: 2011-06-03*
*NOTE: Python 2.6 is in security-fix-only mode. No non-security bug fixes are
allowed. Python 2.6.7 and beyond will be source only releases.*
* No changes since 2.6.7rc2.
What's New in Python 2.6.7 rc 2?
================================
*Release date: 2011-05-20*
*NOTE: Python 2.6 is in security-fix-only mode. No non-security bug fixes are
allowed. Python 2.6.7 and beyond will be source only releases.*
Library
-------
- Issue #11662: Make urllib and urllib2 ignore redirections if the
scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).
- Issue #11442: Add a charset parameter to the Content-type in SimpleHTTPServer
to avoid XSS attacks.
What's New in Python 2.6.7 rc 1?
================================
*Release date: 2011-05-06*
Library
-------
- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing
error handling when accepting a new connection.
Highlights:
- Initial release of the diameter application.
- Strengthened random number generation.
- Some fixes for bugs that caused crashes.
Read full announcement at
http://www.erlang.org/download/otp_src_R14B03.readme
Provided by Peter Bex on IRC.
Changes in 4.7.0
- Build system
- On BSD, libchicken.so is linked with -lpthread, as this seems
to be required for linking libraries that require pthreads
- The C header-files are now installed in a subdirectory below
the "PRFIX/include" directory to allow installation of multiple
chickens with different PROGRAM_PREFIX/PROGRAM_SUFFIX settings
in the same prefix; to avoid conflicts with existing CHICKEN
headers, it is recommended to completely remove any old
installation before installing the new version
- the PROGRAM_PREFIX and PROGRAM_SUFFIX configuration settings
are applied to generated files and directories which allows
perform differently named installations into the same PREFIX
- increaded binary-compatibility version from 5 to 6, which
means installed extensions in an existing installations will
have to be re-installed
- bugfixes in mingw/msys makefiles
- Sven Hartrumpf contributed a bugfix to the internal helper
script for creating distribution directories
- Peter Bex has cleaned up the makefiles heavily, making the
build more maintainable and easier to modify; thanks to all
who helped testing this new build
- renamed the makefile to `GNUmakefile' to catch using the
a make(3) other than GNU make
- configuration-header fix for BSD systems (thanks to Peter Bex
and Christian Kellermann)
- Core libraries
- the `regex' library unit has been removed and is separately
available as an extension which should be fully backwards-
compatible
- `irregex' is now a core library unit and replaces the `regex' API
- "extras" unit
- fixed pretty-printer output of certain escaped character
sequences inside strings (thanks to Mario Domenech Goulart,
thanks to Kon Lovett for pointing out a missing test-file)
- The pretty printer did not escape some control characters correctly
(reported by Alan Post)
- control-characters in symbol-names are now properly escaped if
the symbol is printed readably (thanks to Alaric Snell-Pym
for pointing this out)
- the deprecated `random-seed' function has been removed
- "files" unit
- fixed bug in `normalize-pathname'
- `file-copy' and `file-move' check whether the source-file is a
directory
- `delete-directory' now optionally deletes directories recursively
- "irregex" unit
- Peter Bex has contributed various bugfixes and performance
enhancements
- "library" unit
- Added "condition->list" (thanks to Christian Kellermann)
- The reader accepts now escaped octal character codes in string
literals
- Read-syntax can return zero values to indicate ignored objects
- R5RS output output routines now always return a "void" result
- "\|" was not correctly escaped when occurring inside
symbol print names
- added `condition->list', contributed by Christian Kellermann
- added `equal=?'
- removed deprecated `getenv', `left-section', `right-section',
`project', `c-runtime' and `noop'
- added missing import-library entry for `vector-copy!' (thanks
to Jules Altfas)
- circular or excessively deeply nested data generates a more
useful error message when encountered by `equal?'
- `list-tail' gives now a better error message when passed a
non-list argument
- fixed bug in `getter-with-setter' that modified the first
argument if it already had a setter procedure attached
- fixed incorrect size of internal data vector used in `time'
(thanks to Kon Lovett)
- "lolevel" unit
- removed deprecated `global-bound?', `global-make-unbound',
`global-ref' and `global-set!' procedures
- added support for `pointer-vectors':
- make-pointer-vector
- pointer-vector?
- pointer-vector-length
- pointer-vector-ref
- pointer-vector-set!
- "posix" unit
- "close-input-pipe" did not return the status code of a
terminated process on Windows (reported by Mario Domenech Goulart)
- added `file-creation-mode' (suggested by Mario Domenech Goulart)
- "setup-api" unit
- `required-extension-version' and `required-chicken-version' have
been deprecated
- "srfi-18" unit
- removed deprecated `milliseconds->time' and `time->milliseconds'
procedures
- `make-mutex' incorrectly created mutexes as initially owned by
the current threads (thanks to Joerg Wittenberger)
- the file-descriptor handling in the scheduler has been simplified
and performs some sanity checks
- deadlock in the scheduler now terminates the process instead of
attempting to throw an error
- added some sanity checks to the scheduler
- "tcp" unit
- Fixed bug in "tcp-abandon-port" (reported by Jim Ursetto)
- "utils" unit
- `compile-file' now returns `#f' when the compilation fails,
instead of raising an error
- Compiler
- Removed unreliable lambda-lifting optimization (now, really!);
the "-lambda-lift" option is still accepted but produces a
warning
- When "-scrutinize" is given, installed ".types" files will be
automatically consulted for extensions and used units
- Fixed optimizer bug in handling of "let" forms with multiple
bindings which could result in toplevel assignments being
silently dropped (reported by Moritz Heidkamp)
- the `-accumulate-profile' option did not provide a way to
specify the target profile data file - now `-profile-name'
must always be given when accumulated profiling is done
(thanks to Taylor Venable)
- added `-module' option, which wraps the code into an implicit
module
- removed check for unsafe toplevel calls in safe mode
- intrinsic handling of `exact->inexact' and `string->number' is
now more efficient
- fixed bug in leaf-routine optimization (thanks to David
Dreisigmeyer)
- unit-toplevel entry-points are now named differently, which
may break binary-compatibility with existing compiled Scheme
code modules
- fixed invalid dropping of unused external entry-points in
block-mode
- fixed incorrect lambda-list check in scrutinizer (thanks to
Alan Post)
- Kon Lovett reported numerous bugs in the type-database used
by the scrutinizer
- `-fwrapv' is disabled on OpenBSD, since the default compiler
does not support this option (thanks to Christian Kellermann)
- on Solaris `gcc' is used by default, override `C_COMPILER'
to use the Sun compiler instead
- declaring a function `notinline' will prevent direct-call
optimization for known procedure calls
- the implementation of overflow-detection for arithmetic operations
on fixnums have been replaced and now allow using the full 63-bit
range of fixnums on 64-bit systems
- fixed serious inlining-bug (thanks to Sven Hartrumpf)
- constant-folding in the compiler has been simplified and
is more reliable (thanks to Sven Hartrumpf)
- optimization-levels 3 and higher imply `-unboxing -inline-global'
- added new declaration `unsafe-specialized-arithmetic' which allows
optimizing unboxed floating-point arithmetic in safe mode
- removed `scrutinize' declaration
- the warning shown when unimported identifiers are used in compiled
modules now also shows the name of the procedure where the
identifier is referenced (suggested by Alaric Snell-Pym)
- Documentation
- Added list of installed files to README
- Documented remaining "c...r" standard procedures (thanks to
Juergen Lorenz)
- The manual is now installed in HTML format in
PREFIX/share/chicken/doc, many thanks to Jim Ursetto for
contributing is excellent `manual-labor' extension which made
this possible
- Foreign function interface
- Added support for missing "(const [XXX-]c-string)" foreign type
(thanks to Moritz Heidkamp)
- removed deprecated `pointer', `nonnull-pointer', `byte-vector'
and `nonnull-byte-vector' types
- added missing result-type handling for `unsigned-integer64'
(thanks to Moritz Heidkamp)
- added `foreign-type-size' macro
- added the new foreign type `size_t' (suggested by Moritz
Heidkamp)
- added the missing `unsigned-integer64' foreign type (thanks
to Moritz for catching this)
- added new foreign type `pointer-vector' which maps to `void **'
and provided a low-level API in the `lolevel' library unit for
manipulating pointer vectors
- Runtime system
- Fixed typo in "runtime.c" (thanks to Sven Hartrumpf)
- Little-endian detection on MIPS systems was not correct (thanks
to Christian Kellermann)
- Fixed bug in handling of runtime-options with arguments (also
reported by Christian Kellermann)
- `equal?' does not compare procedures recursively anymore
- fixed incorrect use of alloca.h on OpenBSD (thanks to
Christian Kellermann and Alan Post)
- checks for NaN and infinity are now done using ISO C99
operations, which required various changes to `chicken.h'
to make the code compile in ISO C99 mode
- remaining debris regarding MSVC builds has been removed
- fixed bug in argument-type check for 64-bit integer (thanks
to Kon Lovett)
- increased default trace-buffer size from 10 to 16
- fixed bug in low-level termination routine (thanks to
Jeronimo Pellegrini)
- the scheduler handles violations of internal invariants
regarding threads slightly more gracefully (thanks to Jim
Ursetto)
- fixed broken sleep-time conversion (thanks to Karel Miklav)
- repaired broken handling of multiple finalizers that referred
to the same object (reported by Moritz Heidkamp)
- fixed problem with reader and escaping of single-char symbols
- Syntax expander
- For-syntax syntax definitions where not correctly retained inside
modules
- Peter Bex fixed various critical bugs in the expander
- The simplification for quasiquote expressions was unable
to handle certain circular data (reported by Moritz Heidkamp)
- `syntax-rules' now supports tail-patterns and is now fully
SRFI-46 compatible - many thanks to Peter Bex for implementing
this
- Peter Bex provided a bugfix for resolution of primitive imports
- handling of internal definitions with shadowed defining
forms is now done correctly - fix once again from Peter Bex
- corrected non-standard behaviour of quasiquote with respect
to nested quasiquotations - another bugfix by our mighty macro
master
- removed stub-implementation of `define-macro'
- handled case where a global redefinition of `cons' influenced
a non-inlined internal use in the expander (thanks to David
Steiner)
- `define-record' now allows defining SRFI-17 setter procedures
for accessing slots
- the expansion of DSSSL lambda-lists uses now `let-optionals*'
internally instead of `let-optionals' and so allows
back-references to earlier formal variables; this also results in
faster and more compact code for argument-list destructuring
(thanks to Alan Post)
- new "implicit renaming" macro facility contributed by Peter Bex
(see `ir-macro-transformer')
- record-definitions are now made local to the module in which
they are defined (thanks to Jim Ursetto)
- parameters are now settable and can be modified using `set!'
(SRFI-17)
- added a SRFI-17 setter to `list-ref'
- added literal blob syntax ("#{ ... }")
- Tools
- chicken-install
- option "-deploy" does not compile deployed extensions with
"-setup-mode" anymore to avoid problems with dynamic loading on
some platforms (specifically Mac OS X)
- option "-deploy" option did not copy the correct library
(including the version-number) (thanks to Christian Kellermann)
- added support for proxy-authentification (thanks to Iruata Souza)
- when installing from a local directory `chicken-install' now
removes existing `*.so' files in that location to avoid stale
binaries when the `make' syntax is used in setup scripts
- chicken-bug
- removed disabled e-mail support
- csc
- removed `-static-extension' option
- removed deprecated `-windows' option
- fixed incorrect use of `chicken.rc' on non-Windows platforms
in `-gui' mode (thanks to "ddp")
- when compiling in C++ mode, the compiler will be called with the
`-Wno-write-strings' option
- `-frwapv' has been added to the default C compiler options
- csi
- the ",m" toplevel command now accepts "#f" to switch back to
the initial empty module context (suggested by Christian Kellermann)
- fixed broken `,g' toplevel command
- deprecated `script' feature identifier (use `chicken-script'
instead)
- options `-p' and `-P' and `-e' imply `-no-init'
- the call-trace reported will not include exception-handler code
anymore (suggested by Christian Kellermann)
Local changes:
o Remove local fix which has been adopted upstream.
Upstream changes:
3.4.0 news:
- Core
+ The Generational Mark and Sweep garbage collector is the new default.
+ The --gc-nursery-size command line argument was added.
+ Parrot now gets entropy from the underlying OS.
+ The NCI subsystem now supports 8, 16, 32 and 64 bit integers.
+ The NCI subsystem now supports "long long" and "long double" signatures.
Not all platforms/compilers support these non-standard types, so developers
are cautioned to take note that using them reduces portability.
+ Many more OpenGL functions in the Parrot OpenGL bindings are available,
which required the above-mentioned signatures.
+ Bytecode-related embedding api functions moved to src/embed/bytecode.c.
- Languages
+ Winxed
- Use 'using extern' for module imports.
- Improved stage 0 prefix ++ and -- operators.
- Allow 'null' in conditional operator.
- Several examples are updated.
- Community
+ Google Summer of Code Bonding period is going well. Students are
mostly done with their classes and much code will flow soon.
- Documentation
+ More PCT introductions are available.
3.3.0 news:
- Core
+ The isa and isa_pmc vtables can now be overridden from PIR
+ IMCC has a new improved external interface
+ A new IMCCompiler PMC adds prototype PDD31-alike functionality for the
PIR and PASM compilers
+ New --with-llvm option to Configure.pl, which will link to LLVM if it
is available
- Community
+ Parrot Virtual Machine was accepted into Google Summer of Code 2011
- Ecosystem
+ Rosella adds a stable "Event" library to implement a
publish/subscribe mechanism
- Tests
+ The test coverage of the extend_vtable subsystem was greatly increased
Packaged by Marko Schütz, improved by Kai-Uwe Eckhardt.
This is the gcc 4.5 compiler suite.
This package has a test target. For testing (only), this
package requires devel/dejagnu and devel/autogen.
changes:
-newer gcc snapshot
-add option to build c++ support (not enabled per default because
the build fails due to something which looks like a command line
length limitation on NetBSD)
changes in sbcl-1.0.48 relative to sbcl-1.0.47:
* incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
years, is now no longer supported.
* enhancement: read() and write() have been added to SB-POSIX.
* enhancement: types of DEFSTRUCT constructors are proclaimed more
accurately, allowing better typechecking of call-sites.
* enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
are no longer caught. (reverted to pre 1.0.34 behaviour)
* optimization: slightly faster ISQRT. (lp#713343)
* bug fix: better support for Solaris /bin/sh in sh-based tests.
* bug fix: TRACE behaves better when attempting to trace undefined
functions. (lp#740717)
* bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
to (FUNCALL #'(LAMBDA ...) ...).
* bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
a compile-time error. (lp#720382)
* bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
without complaints.
* bug fix: less verbose source forms for functions from EVAL. (lp#747485)
* bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
optimization. (regression from 1.0.45.18/1.0.46.15)
* bug fix: package locks did not protects against compile-time side-effects
of DEFUN. (lp#675584)
* bug fix: --dynamic-space-size argument is validated more carefully.
(lp#721457)
* bug fix: memory fault from printing a malformed simple-condition.
(lp#705690)
* bug fix: redefining classes so that slot-definition classes change now
engages the obsolete instance protocol. (lp#766271)
* bug fix: constant improper lists could break source coverage recording.
(lp#767959)
* bug fix: compiling calls to eg. MEMBER with massive constant list arguments
could exhaust stack.
Update mawk to 1.3.4.20100625
Major changes in this release of mawk:
20100625
+ correct translation of octal and hex escapes for system regular
expression library.
+ modify configure script to support --program-suffix, etc.
+ add Debian package scripts, for "mawk-cur".
+ add RPM spec-file.
+ move release- and patch-level values from version.c to patchlev.h
to simplify packaging scripts.
20100618
+ correct translation of "^{" pattern for system regular expression
library (report by Elias Pipping).
+ fix sentence fragment in README (report by Elias Pipping).
20100507
+ cleanup gcc warnings for 64-bit platform, e.g., use size_t rather
than unsigned, etc.
+ fix warnings from clang --analyze
+ update/improve configure script
+ modify CF_GCC_VERSION to ignore stderr, e.g., from c89 alias
+ modify CF_GCC_WARNINGS, moving -W and -Wall into the list to check,
since c89 alias for gcc complains about these options.
+ add --disable-leaks and related options, for testing.
+ add lint rule to makefile.
+ add configure-check for ctags to work with pkgsrc.
+ amend change of array.w, fixes a regression in "delete" (report by
Heiner Marxen).
20100419
+ modify split() to handle embedded nulls in the string to split, e.g.,
BEGIN{s="a\0b"; print length(s); n = split(s,f,""); print n}
(report by Morris Lee).
+ modify array.w to update table pointers in the special case where
an array is known to have string-indices, but is later indexed via
integers. The problem occurs when the array grows large enough to
rehash it, e.g.,
BEGIN{a["n"];for(i=1;i<1000;++i)printf "%d\n", a[i]; }
(report by Morris Lee).
+ increase size of reference-count for strings to unsigned. It was an
unsigned short, which prevented using arrays larger than 64k, e.g.,
BEGIN{for(i = 1; i <= 65550; ++i){if(i >= 65534 && i<=65537) print i; s[i] = "a"}; delete s;}
(report by Morris Lee).
+ add special case for Solaris 10 (and up) to configure check
CF_XOPEN_SOURCE
+ refactored configure check CF_REGEX
20100224
+ add a configure check for large files (report by Sean Kumar).
+ modify check in collect_RE() to show the actual limit value, e.g.,
MIN_SPRINTF-2 used for built-in regular expressions.
+ increase MIN_SPRINTF, used as limit on regular-expression size, to
match the MAX_SPLIT value, i.e., slightly more than doubling the size
(report by Markus Gnam).
+ further modify makefile to build outside the source-tree.
+ modify makefile and mawktest to use relative path again, since the
existing script did not work with openSUSE's build (patch by Guido
Berhoerster).
+ fix makefile's .c.i rule, which lacked CPP definition.
+ update mawktest.bat script to more/less correspond with mawktest,
for Win32 console except where echo command does not handle the
required quoting syntax.
+ add vs6.mak, for Visual Studio 6.
+ modify mawktest script to report results from all tests, rather than
halting on the first failure.
+ add limit-check after processing match(test, "[^0-9A-Za-z]") to
ensure the internal trailing null of the test-string is not mistaken
for part of the string, i.e., RSTART, RLENGTH are computed correctly
(report by Markus Gnam).
+ modify parsing of -W option to use comma-separated values, e.g.,
"-Wi,e" for "-Winteractive" and "-Werror".
+ add timestamp to scancode.c, to help manage revisions.
+ improve configure macro CF_XOPEN_SOURCE, making it remove possibly
conflicting definitions before adding new ones.
+ update config.guess and config.sub
> patches by Jan Psota:
+ improve buffering for -Winteractive option.
+ allow multiple single-character flags after -W, e.g., "-Wie" for
"-Winteractive" and "-Werror" to permit these to be passed on a
"#"-line of a shell script, e.g.,
#!/usr/bin/mawk -Wie
> patches by Jonathan Nieder:
+ add new M_SAVE_POS and M_2JC operation codes (states) to the
built-in regular expression engine. Use these to reimplement
m* (closure), to provide a way to avoid infinite looping on
matches against empty strings. This change requires
reimplementing
the workaround for gawk's noloop1 testcase from 20090726.
+ improve buffer-overflow check for string_buff.
+ fix collect_RE to treat "[^]]" as a character class (meaning "not a
closing bracket") but "[^^]]" not as one. This also requires
initializing the local "start of character class" variable to NULL
rather than the beginning of the string, to avoid an invalid array
access when collecting expressions such as "^text".
+ within a character class and not followed by a :, ., or ~, a "[" is
just like any other character. This way, you can tell mawk to scan
for a literal [ character with "mawk /[[]/", and you can scan for a [
or ] with "mawk /[][]/". Also clean up the relevant loop in
do_class() to make it a bit more readable.
+ outside a character class, a "]" is just like any other character.
+ prevent do_class() from scanning past the end, e.g., if the
terminating zero byte was escaped.
+ fix regular-expression parsing when a right parenthesis ")" is
found without a preceding left parenthesis.
+ fix resetting of position stack when backtracking.
+ modify regular-expression engine to avoid exponential running time
for some regular expression matches in which the first match mawk
finds extends to the end of the string. This is a new fix for the
gawk noloop2 test, added here for regression testing.
List of user-visible changes in GNU Smalltalk
NEWS FROM 3.2.3 TO 3.2.4
o Autoload is extended to allow plugging in arbitrary loaders.
o Array items in a CStruct didn't work, this is fixed now.
o DLD could have problems when the same library was requested multiple
times.
o Errors in the bind() system call were not detected correctly; this
has been fixed.
o Fixes for platforms with 113-bit long doubles.
o Fixes to Delay in the presence of delays with the exact same expiration.
o Fixes to the HTTP package, including correct flushing of POST requests
and doesNotUnderstand exceptions when the host did not exist.
o GLUT bindings now build correctly under Windows.
o Many smalltalk-mode improvements.
o New methods: TextCollector>>#critical:,
o nil can be passed to a C function accepting a #cObjectPtr (i.e.
void **) argument.
o SocketAddress>>#allByName: returns nil now, instead of an empty array,
when getaddrinfo succeeds but returns no address for the requested
address class.
o SocketAddress>>#byName: returns addresses for the default address class
when the receiver is SocketAddress (and not a subclass).
o Support for older versions of GnuTLS.
o Swazoo's static content serving was broken and has been fixed.
o The GST_PACKAGE macro supports having multiple .la files in its last
argument. gst-package's --prepare option was broken and has been fixed.
o The NetClients exception ProtocolError now includes the erroneous
response. Similarly, the package includes ProtocolNotification which
is used, for example, for HTTP redirects.
o Updated the Squeak/Pharo fileout parser.
o Updated VisualGST.
-----------------------------------------------------------------------------
NEWS FROM 3.2.2 TO 3.2.3
o Class attributes can have more than 1 keyword.
o Documented #byteArrayOut C call argument passing mode.
o Fixed crash when an invalid UnicodeString was created using
#changeClassTo:
o Fixed deadlock with #atEnd and two-way pipes.
o Fixed bugs when adding instance variables to an existing class.
o Fixed Socket>>#isPeerAlive falsely returning true.
o Fixed some bugs in UTF-7 conversion.
o FreeBSD port and 64-bit Darwin port. The latter requires a
pre-installed libsigsegv.
o "gst-convert -f squeak" reads binary selectors with more than two
characters; however they should be shortened with rewrite rules
to use the output.
o gst-doc can generate sensible documentation for a package if
some of its prerequisite are not loaded, even if some of the
package's classes subclass from the prerequisite.
o GTK+ bindings are generated correctly for newer versions of GLib
(tested up to 2.26).
o If found, pre-installed libsigsegv, libffi and libltdl are used by
default.
o Improvements for Emacs mode. Installation of Emacs mode detects
Debian's /etc/emacs/site-start.d, and a --with-lispstartdir option
is provided for distributions that are not Red Hat- or Debian-based.
o Machine-specific optimizations for x86-64, and other microoptimizations
resulting in small but consistent performance improvements.
o More out of memory conditions are detected.
o New methods: ByteArray>>#castTo:, ByteArray>>#asCData,
String>>#asCData, UndefinedObject>>#inheritsFrom:
o New goodie: Announcements.
o Number class>>#readFrom: can parse numbers in scientific notation.
o Package descriptions do not need to include a <file> item for each
<filein> item. However, it is still possible to include them for
backwards compatibility, and it is possible to include a source file
as both <filein> and <built-file> (so that gst-package --dist will
skip it).
o Packages can be downloaded using HTTPS if GnuTLS libraries are
present.
o Performance statistics printed by -V are now correct.
o Scoped methods ("A class >> a") can be used in an "A class [ ... ]"
block.
o Semaphore>>#wait returns nil if the wait was interrupted externally
(e.g. from Process>>#resume).
o String>>#asCData: and String>>#asCData NULL-terminate their output.
o Support for timeouts when waiting on a Semaphore.
o Swazoo supports SCGI. Its configuration however is still manual,
since the Seaside and Iliad adaptors do not know about it.
o Updated VisualGST.
* Google Native Client Support
* New Profiler engine
* Faster socket stack
* Improved Parallel Framework
* SGen Precise Stack Scanning and Many performance improvements.
* Unified MonoTouch/Monodroid runtime support
* Cecil/Light
* New C# Compiler backend (can now use any custom mscorlib)
* VB Compiler can now compile to both 2.0 and 4.0 profiles.
* Supports ASP.NET MVC3, Razor and new WebPages.
* New WebMatrix.Data database API.
* Improved OSX Mono
* F# and IronRuby
What's New in Python 2.4.6?
===========================
*Release date: 19-Dec-2008*
What's New in Python 2.4.6c1?
=============================
*Release date: 13-Dec-2008*
Core and builtins
-----------------
- Issue #4469: Prevent expandtabs() on string and unicode
objects from causing a segfault when a large width is passed
on 32-bit platforms. CVE-2008-5031.
- Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
- Issue #4230: Fix a crash when a class has a custom __getattr__ and an
__getattribute__ method that deletes the __getattr__ attribute.
- Apply security patches from Apple. CVE-2008-2315.
- Issue #2620: Overflow checking when allocating or reallocating memory
was not always being done properly in some python types and extension
modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
all been updated to perform better checks and places in the code that
would previously leak memory on the error path when such an allocation
failed have been fixed.
- Issue #1179: Fix CVE-2007-4965 and CVE-2008-1679, multiple integer
overflows in the imageop and rgbimgmodule modules.
- Issue #2586: Fix CVE-2008-1721, zlib crash from
zlib.decompressobj().flush(val) when val is not positive.
- Issues #2588, #2589: Fix potential integer underflow and overflow
conditions in the PyOS_vsnprintf C API function. CVE-2008-3144.
- Issue #2587: In the C API, PyString_FromStringAndSize() takes a signed size
parameter but was not verifying that it was greater than zero. Values
less than zero will now raise a SystemError and return NULL to indicate a
bug in the calling C code. CVE-2008-1887.
- Security Issue #2: imageop did not validate arguments correctly and could
segfault as a result. CVE-2008-4864.
Extension Modules
-----------------
Library
-------
Tests
-----
Build
-----
Tools/Demos
-----------
- Tools/faqwiz/move-faqwiz.sh: Fix unsecure use of temporary files.
changes in sbcl-1.0.47 relative to sbcl-1.0.46:
* bug fix: fix mach port rights leaks in mach exception handling code on
darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
initial patch)
* enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
* enhancement: redefinition warnings for macros from different files. (lp#434657)
* enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
* enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
* enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
processed using EVAL -- now the appropriate toplevel form is reported instead.
* enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
declarations. (lp#726331)
* enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
that NIL/NULL is excluded from the type.
* enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
arbitrary objects.
* optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
and its compatriots.
* optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
* bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
stack-allocated values out of their dynamic-extent. (lp#310175)
* bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
x86-64 builds caused a type-error.
* bug fix: calling COMPILE with something else than a lambda-expression as the
second argument reports a more sensible error. (lp#718905)
* bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
are detected. (lp#520607)
* bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
into account.
* bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
methods. (regression from 1.0.45.18)
* bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
* bug fix: several foreign functions accepting string also accepted NIL and
consequently caused a memory fault at 0 now signal a type-error instead.
(lp#721087)
* bug fix: under rare circumstances, constraint propagation could rewrite a
variable reference to refer to a variable not in scope, causing an error
during physical environment analysis when attempting to close over the
variable. (lp#551227)
* bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
definitions which do things behind the client pkgs back, in particular
manipulate the library search path
It is well possible that this causes some fallout, but I hope it
will be small and can be dealt with on a per-pkg basis.
(partly) suggested by Mark Davies on tech-pkg
Highlights composed by Matthew Sporleder.
Changes in R14B02 (http://www.erlang.org/download/otp_src_R14B02.readme)
- It is now possible to use Erlang specifications and types
in EDoc documentation
- All tests in Erlang/OTP have been converted to be run with
Common Test as the backend instead of Test Server.
- From this release, the previously experimental halfword
emulator is now official
- Dependency generation for Makefiles has been added to the
compiler and erlc
- Add a --fullpath option to Dialyzer (include version 2.4.2)
- Many fixes in erts
- Remove hipe constants pool
- Partial support for recursive structs and unions
- It is now possible to use SSH to sign and verify binary data.
- typer has been rewritten
Changes R14B01 (http://www.erlang.org/download/otp_src_R14B01.readme)
- New ETS option compressed, to enable a more compact storage
format at the expence of heavier table operations
- There is now a new function inet:getifaddrs/0 modeled after
C library function getifaddrs() on BSD and Linux that reports
existing interfaces and their addresses on the host
- Multiple crashes and infinite loops fixed
- AES CTR encryption support in crypto
- erl_call: remove get_hostent
- The Erlang VM now supports Unicode filenames
- New ETS option compressed
Changes in R14B (http://www.erlang.org/download/otp_src_R14B.readme)
- Large parts of the ethread library have been rewritten.
- The changed API of the ethread library has also caused
modifications in the Erlang runtime system.
- Some Built In Functions (BIFs) are now autoimported
- Added erlang:system_info(build_type)
- A number of memory leaks in the crypto NIF library have been fixed
- erl_call: fix multiple buffer overflows
- NIF 64-bit integer support
- Removed some potential vulnerabilities from the Erlang Port
Mapper Daemon (epmd)
- Replaced the old http client api module (http) with the new,
httpc in the users guide.
- inet6 improvements
- ssh fixes
- many ssl improvements/fixes
- wx crash fix
Changes in R14A (http://www.erlang.org/download/otp_src_R14A.readme)
- R14A is a major new release of Erlang/OTP.
- The module binary from EEP31 (and EEP9) is implemented
- It is now possible for the user to provide specific callback
modules that handle test configuration data
- New NIF features
- Receive statements that can only read out a newly created
reference are now specially optimized so that it will execute
in constant time regardless of the number of messages in the
receive queue for the process.
- The run_test script has been replaced by a program (with the
same name) which can be executed without explicit installation
- eprof has been reimplemented with support in the Erlang
virtual machine and is now both faster (i.e. slows down the
code being measured less) and scales much better
Changes in R13B04 (http://www.erlang.org/download/otp_src_R13B04.readme)
- Many documentation and documentation build improvements
- cross-compile/build improvements
- buffer overflow fix
- telnet keep alive fixes
- compiler crash on boolean ifs
- -Werror for erlc fixed
- macro overloading implemented
- the crypto module now supports Blowfish
- explicit top directories in archive files are now optional
- add lock profiling tool: lcnt
- httpd methods "PUT" and "DELETE" now allowed + others fixes
to resolver routine
- compression supported when copying between mnesia nodes
Notable changes in 5.11.18
--------------------------
Experimental extension to run the development tools in a
separate thread, so you can edit away while your program runs.
Notable changes in 5.11.17
--------------------------
Fix error with quoted wide atoms. This causes write/read to fail
for any term that contains an atom that needs quotes and has
Unicode points >= 256.
This also contains the copy_term/2 patch to exploit sharing ...
Notable changes in 5.11.16
--------------------------
Unicode handling is certainly a step forward wrt. character
classification. Unicode symbols have been modified to `glue'
like ==, =<, etc.
Finally, there is per-thread CPU statistics for MacOS
Finally, selection handling in the Windows console is a bit better.
Trail-stack usage is now significantly less.
Notable changes in 5.11.15
--------------------------
Revert the change to write_canonical/1
Notable changes in 5.11.14
--------------------------
There is a lot of mostly small fixes. The most notably are changes
to the ODBC interface, which now supports Unicode (at least for queries,
not for all aspects). It's got a new option to ODBC connections:
the encoding. The default should work fine on Windows and UTF-8 based
Unix databases. Thanks to Matt Lilley and Carlo Capelli.
There is quite some reorganisation in the sources due to work on sharing
most of the OS interface and I/O between YAP and SWI and make the setup
of packages such that the makefiles can be shared between SWI and YAP.
Notable changes in 5.11.13
--------------------------
This version fixes some more issues in =@=/2, various minor issues
and may have big impact on trail-stack usage of your program.
It also fixes the reported socket issue with XPCE on Win64.
Notable changes in 5.11.12
--------------------------
This contains some quite important fixes, avoiding simply wrong
answers as well as some crashes. Besides the usual small stuff,
it has two important rewrites:
- Standard order comparison now avoids recursion using the C-stack.
This is a bit of a trial. Timing shows that processing last-argument
nested terms is about 10% slower and other nesting is about 50% faster
and no longer causes uncrontrolled stack-overflows. This is promising,
but the amount of work is considerable, notably for this case, where
the possibility of comparison to raise an exception is new.
- =@=/2 is completely rewritten. If you are looking for a challenge,
there is one in the current version of =@=/2 (variant/2). The
implementation is in src/pl-prims.c and the test cases in
src/Tests/core/test_term.pl. =@=/2 has gone through some
iterations. If all is right, the current version
- Fails as soon as it finds a difference, without processing
a whole term.
- Handles rational trees (cyclic terms).
- Deals with variables shared between the argument terms.
Notable changes in 5.11.11
--------------------------
Top level now reveals the internal `sharing' of subterms in answer
substitutions. This notably deals with cyclic terms.
Notable changes in 5.11.10
--------------------------
Floats are no longer printed through the C-library printf using %g.
Instead, Prolog write writes a float such that reading it back
recontructs a float that is bitwise equivalent (==) to the input.
This is based on a library by David M. Gay. The output routine uses
the same rules on when to use exponential notation as the GNU C-library's
%g format. It prints as few as possible digits to reach == equivalence,
but this is typically more than it used to print. If you want fewer digits,
use format/3 (e.g., ~6f) or round (A is round(F*10000)/10000, write(A)).
rdf_reachable/2 now, like rdf_has/3, respects defined RDF predicate properties.
In addition, it provides look-ahead which ensures deterministic success on
the last answer. This means that rdf_reachable(A, owl:sameAs, B) (with either
or both A and B instantiated) behaves as expected and much more efficiently.
There are a lot of changes to quoted syntax, notably for 0'<char> and
some for quoted atoms. Except for \e being read as 27 (esc), all sensible
previously valid input is parsed consistently (I wouldn't be surprised if
it is possible to construct cases where you get different output, but I
would be surprised if any real program is affected). See mailinglist for
details.
This is the beta of the first release of pcc since almost forever. The
main architectures supported are i386 and amd64, other targets may have
less functionality.
Update reviewed by Alistair G. Crooks.
* Type Based Alias Analysis (TBAA) is now implemented and turned on by default
in Clang. This allows substantially better load/store optimization in some
cases. TBAA can be disabled by passing -fno-strict-aliasing.
* This release has seen a continued focus on quality of debug information. LLVM
now generates much higher fidelity debug information, particularly when
debugging optimized code.
* Inline assembly now supports multiple alternative constraints.
* A new backend for the NVIDIA PTX virtual ISA (used to target its GPUs) is
under rapid development. It is not generally useful in 2.9, but is making
rapid progress.
Pkgsrc changes:
o Adapt existing patches to changes in upstream code
o Add a fix for the stat() / lstat() tests in parrot; will be reported
upstream as a bug.
Upstream changes:
- Core
+ Full support for Unicode filenames on Linux and Win32
+ The configuration option --cxx is gone
+ New Generational GC implemented. To enable it run Configure.pl --gc=gms
+ Now op definitions are semantically parsed. It opens possibilities for
future optimizations of parrot core.
+ A statement convert the '.param' PIR systax
+ A PMC is implemented for low-level buffer access which separate the
representation from the pointers
+ Support added for 'long double', 'long long', and 64-bit to StructView
+ In math.h are tools available for Inf/NaN
+ Signature PMCs are used pervasively
- Languages
+ A few tests in Cardinal are fixed
+ A binary .dmg is created of Rakudo Star for OS X
+ Winxed
- Minor fixes, refactors and cleaning
- New predefs replace, push and provide a way to access multiple return
values
- Operators exits, class and .* (indirect method call) added
- $loadlib directive
- -o option to installable driver added
- Indent generated PIR is added to improve clarity and avoid imcc pitfalls
with non indented sub bodys
- Community
+ M0 roadmap is in progress
- Documentation
+ 'make docs' target, which was serving only to generate superfluous POD
files, has been removed.
+ Svn remnants from PDDs are removed
- Tests
+ Added 'make release_check' target so that Release Manager can double-check
tarball
+ Probes added for 'long long' and 64-bit C types
- Rosella
Rosella is a collection of tools and building blocks for Parrot
+ A working proxy library is created, that make mostly-transparent custom
proxies for many types of Parrot PMCs
+ A mockobject testing library is created, using the new proxy library
+ The PLA test suite is updated to use the new Rosella testing tools,
including the new mockobjects to test callbacks
Changes from V8.3 to V8.3pl1
o Type inference, notations and implicit arguments bug fixes
- #2448 (alpha-renaming problems with notations internally using binders)
- #2454 (pattern-matching sometimes not supporting type casts)
- fixing combined use of non-implicit and explictly-declared implicit arguments
in inductive arities
- restored support for using some ident with different scopes in notations
o Ltac and tactics bug fixes
- #2414 (rewrite in not looking for eq_ind in the right module)
- #2433 (new "is_evar"/"has_evar" to restore support for matching evars in Ltac)
- #2453 (dependent destruction)
- loop in dependent destruction
- new "constr_eq" tactic for restoring support for term equality test in Ltac
- setoid rewrite under cases and abstraction fixed
o Coqdoc and documentation bugs
- #2418 (wrong URLs in documentation)
- #2441 (coqdoc bug in Mergesort.v)
- #2445 (correct support for "'" character in coqdoc links to notations)
- fixed wrong use of "moduleid" instead of "module" in coqdoc html indexes
- fixing parsing of Multiplication and Division signs (unicode 0xD7 and 0xF7)
o Compilation
- #2432 (support for compilation with camlp5 6.02.0)
- support for compilation with ocaml >= 3.09.3 restored
o Extraction
- #2413 (prevent type-unsafe optimisations of pattern matching)
- Identifiers of a development aimed to be extracted should
avoid containing "__", since the extraction make various use of
this sub-string, leading to potential name clashes. This was
already so in V8.3, but not announced, as mentionned by #2421.
o Miscellaneous bug fixes
- #2412 (anomaly Ploc.Exc when using Ltac Debug)
- #2419 (redundant opp_compare removed)
- #2427 (Module Functor claims Signature does not match)
- #2431 (compliance of CoqIDE use of mutexes with FreeBSD)
- #2434 (anomaly DuringSyntaxChecking with Local/Global prefixes)
- a few improvements in efficiency
-stricter redirect handling in urllib, to prevent redirects to eg
"file://" URLs (CVE-2011-1521)
-stricter argument checks in the audioop module (CVE-2010-2089)
PHP 5.3.6 Released!
[17-Mar-2011]
The PHP development team would like to announce the immediate availability
of PHP 5.3.6. This release focuses on improving the stability of the PHP
5.3.x branch with over 60 bug fixes, some of which are security related.
Security Enhancements and Fixes in PHP 5.3.6:
* Enforce security in the fastcgi protocol parsing with fpm SAPI.
* Fixed bug #54247 (format-string vulnerability on Phar). (CVE-2011-1153)
* Fixed bug #54193 (Integer overflow in shmop_read()). (CVE-2011-1092)
* Fixed bug #54055 (buffer overrun with high values for precision ini setting).
* Fixed bug #54002 (crash on crafted tag in exif). (CVE-2011-0708)
* Fixed bug #53885 (ZipArchive segfault with FL_UNCHANGED on empty
archive). (CVE-2011-0421)
Key enhancements in PHP 5.3.6 include:
* Upgraded bundled Sqlite3 to version 3.7.4.
* Upgraded bundled PCRE to version 8.11.
* Added ability to connect to HTTPS sites through proxy with basic
authentication using stream_context/http/header/Proxy-Authorization.
* Added options to debug backtrace functions.
* Changed default value of ini directive serialize_precision from 100 to 17.
* Fixed Bug #53971 (isset() and empty() produce apparently spurious
runtime error).
* Fixed Bug #53958 (Closures can't 'use' shared variables by value and
by reference).
* Fixed bug #53577 (Regression introduced in 5.3.4 in open_basedir
with a trailing forward slash).
* Over 60 other bug fixes.
Changes in sbcl-1.0.46 relative to sbcl-1.0.45:
* enhancement: largefile support on Solaris.
* enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
arguments (lp#710017)
* enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
&co. (lp#718039)
* optimization: ERROR and CERROR are approximately 5 times faster.
* optimization: optimized constructors are used for MAKE-INSTANCE of classes
with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
up instance creation in those cases.
* optimization: arithmetic operations with multiple constant arguments in now
have them reduced at compile-time. (lp#676414)
* optimization: determining current character position on string-streams for
pretty-printing was overly slow.
* bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
lifetime analysis to overwrite closed-over variables (lp#681092).
* bug fix: encoding errors from some multibyte external formats such as EUC-JP
were not handled correctly (lp#713063).
* bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
safe (lp#673630).
* bug fix: Solaris/x86-64 wasn't getting built with lutex support by
mistake. (lp#667297).
* bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
* bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
* bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
unintern the wrong symbol with the same name. (lp#693796)
* bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
making it possible to restore the initial table if it has been messed up.
(lp#678409)
Console_GetOpt and Structures_Graph.
PEAR 1.9.2:
Release date: 2011-02-28 18:58 UTC
Changelog:
Important! This is a security fix release. The advisory can be found at
http://pear.php.net/advisory-20110228.txt
Bugs:
* Fixed Bug #17463: Regression: On Windows, svntag [patch by doconnor]
* Fixed Bug #17641: pecl-list doesn't sort packages by name [dufuz]
* Fixed Bug #17781: invalid argument warning on foreach due to an
empty optional dependencie [dufuz]
* Fixed Bug #17801: PEAR run-tests wrongly detects php-cgi [patch by
David Jean Louis (izi)]
* Fixed Bug #17839: pear svntag does not tag package.xml file [dufuz]
* Fixed Bug #17986: PEAR Installer cannot handle files moved between
packages [dufuz]
* Fixed Bug #17997: Strange output if directories are not writeable [dufuz]
* Fixed Bug #18001: PEAR/RunTest coverage fails [dufuz]
* Fixed Bug #18056 [SECURITY]: Symlink attack in PEAR install [dufuz]
* Fixed Bug #18218: "pear package" does not allow the use of late
static binding [dufuz and Christer Edvartsen]
* Fixed Bug #18238: Wrong return code from "pear help" [till]
* Fixed Bug #18308: Broken error message about missing channel
validator [yunosh]
This feature is implemented as a result of #18056
* Implemented Request #16648: Use TMPDIR for builds instead of /var/tmp [dufuz]
Console_GetOpt 1.3.0
Release date: 2010-12-11 21:23 UTC
Changelog:
* Implement Request #13140: [PATCH] to skip unknown parameters.
[patch by rquadling, improved on by dufuz]
Structures_Graph 1.0.4
Release date: 2010-10-26 04:10 UTC
Changelog:
Bugfix Release:
* Bug #17108 BasicGraph::test_directed_degree fails on PHP 5 [clockwerx]
Solaris 11 Express, too).
Changes 4.4.5:
The GNU project and the GCC developers are pleased to announce the
release of GCC 4.4.5.
This release is a bug-fix release, containing fixes for regressions in
GCC 4.4.4 relative to previous releases of GCC.
Impetus to upgrade from Matthias Rampke.
Pkgsrc changes:
o Changed package name to not include upstream version number (ouch!)
Upstream changes:
o Lots of fixes; list of changes not easily available.
o The main supported architectures are i386 and amd64; other targets
have "less functionality".
Please help in testing this; report bugs via http://pcc.ludd.ltu.se/jira.
Python 2.7 is intended to be the last major release in the 2.x series.
The Python maintainers are planning to focus their future efforts on
the Python 3.x series.
This means that 2.7 will remain in place for a long time, running
production systems that have not been ported to Python 3.x.
Two consequences of the long-term significance of 2.7 are:
* It's very likely the 2.7 release will have a longer period of
maintenance compared to earlier 2.x versions. Python 2.7 will
continue to be maintained while the transition to 3.x continues, and
the developers are planning to support Python 2.7 with bug-fix
releases beyond the typical two years.
* A policy decision was made to silence warnings only of interest to
developers. :exc:`DeprecationWarning` and its
descendants are now ignored unless otherwise requested, preventing
users from seeing warnings triggered by an application. This change
was also made in the branch that will become Python 3.2. (Discussed
on stdlib-sig and carried out in :issue:`7319`.)
In previous releases, :exc:`DeprecationWarning` messages were
enabled by default, providing Python developers with a clear
indication of where their code may break in a future major version
of Python.
However, there are increasingly many users of Python-based
applications who are not directly involved in the development of
those applications. :exc:`DeprecationWarning` messages are
irrelevant to such users, making them worry about an application
that's actually working correctly and burdening application developers
with responding to these concerns.
You can re-enable display of :exc:`DeprecationWarning` messages by
running Python with the :option:`-Wdefault <-W>` (short form:
:option:`-Wd <-W>`) switch, or by setting the :envvar:`PYTHONWARNINGS`
environment variable to ``"default"`` (or ``"d"``) before running
Python. Python code can also re-enable them
by calling ``warnings.simplefilter('default')``.
