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diff --git a/Master/tlpkg/tlperl/lib/pods/perl589delta.pod b/Master/tlpkg/tlperl/lib/pods/perl589delta.pod deleted file mode 100644 index f10099ccfa4..00000000000 --- a/Master/tlpkg/tlperl/lib/pods/perl589delta.pod +++ /dev/null @@ -1,2337 +0,0 @@ -=head1 NAME - -perl589delta - what is new for perl v5.8.9 - -=head1 DESCRIPTION - -This document describes differences between the 5.8.8 release and -the 5.8.9 release. - -=head1 Notice - -The 5.8.9 release will be the last significant release of the 5.8.x -series. Any future releases of 5.8.x will likely only be to deal with -security issues, and platform build failures. Hence you should look to -migrating to 5.10.x, if you have not started already. -See L</"Known Problems"> for more information. - -=head1 Incompatible Changes - -A particular construction in the source code of extensions written in C++ -may need changing. See L</"Changed Internals"> for more details. All -extensions written in C, most written in C++, and all existing compiled -extensions are unaffected. This was necessary to improve C++ support. - -Other than this, there are no changes intentionally incompatible with 5.8.8. -If any exist, they are bugs and reports are welcome. - -=head1 Core Enhancements - -=head2 Unicode Character Database 5.1.0. - -The copy of the Unicode Character Database included in Perl 5.8 has -been updated to 5.1.0 from 4.1.0. See -L<http://www.unicode.org/versions/Unicode5.1.0/#NotableChanges> for the -notable changes. - -=head2 stat and -X on directory handles - -It is now possible to call C<stat> and the C<-X> filestat operators on -directory handles. As both directory and file handles are barewords, there -can be ambiguities over which was intended. In these situations the file -handle semantics are preferred. Both also treat C<*FILE{IO}> filehandles -like C<*FILE> filehandles. - -=head2 Source filters in @INC - -It's possible to enhance the mechanism of subroutine hooks in @INC by -adding a source filter on top of the filehandle opened and returned by the -hook. This feature was planned a long time ago, but wasn't quite working -until now. See L<perlfunc/require> for details. (Nicholas Clark) - -=head2 Exceptions in constant folding - -The constant folding routine is now wrapped in an exception handler, and -if folding throws an exception (such as attempting to evaluate 0/0), perl -now retains the current optree, rather than aborting the whole program. -Without this change, programs would not compile if they had expressions that -happened to generate exceptions, even though those expressions were in code -that could never be reached at runtime. (Nicholas Clark, Dave Mitchell) - -=head2 C<no VERSION> - -You can now use C<no> followed by a version number to specify that you -want to use a version of perl older than the specified one. - -=head2 Improved internal UTF-8 caching code - -The code that caches calculated UTF-8 byte offsets for character offsets for -a string has been re-written. Several bugs have been located and eliminated, -and the code now makes better use of the information it has, so should be -faster. In particular, it doesn't scan to the end of a string before -calculating an offset within the string, which should speed up some operations -on long strings. It is now possible to disable the caching code at run time, -to verify that it is not the cause of suspected problems. - -=head2 Runtime relocatable installations - -There is now F<Configure> support for creating a perl tree that is relocatable -at run time. see L</Relocatable installations>. - -=head2 New internal variables - -=over 4 - -=item C<${^CHILD_ERROR_NATIVE}> - -This variable gives the native status returned by the last pipe close, -backtick command, successful call to C<wait> or C<waitpid>, or from the -C<system> operator. See L<perlvar> for details. (Contributed by Gisle Aas.) - -=item C<${^UTF8CACHE}> - -This variable controls the state of the internal UTF-8 offset caching code. -1 for on (the default), 0 for off, -1 to debug the caching code by checking -all its results against linear scans, and panicking on any discrepancy. - -=back - -=head2 C<readpipe> is now overridable - -The built-in function C<readpipe> is now overridable. Overriding it permits -also to override its operator counterpart, C<qx//> (also known as C<``>). - -=head2 simple exception handling macros - -Perl 5.8.9 (and 5.10.0 onwards) now provides a couple of macros to do very -basic exception handling in XS modules. You can use these macros if you call -code that may C<croak>, but you need to do some cleanup before giving control -back to Perl. See L<perlguts/Exception Handling> for more details. - -=head2 -D option enhancements - -=over - -=item * - -C<-Dq> suppresses the I<EXECUTING...> message when running under C<-D> - -=item * - -C<-Dl> logs runops loop entry and exit, and jump level popping. - -=item * - -C<-Dv> displays the process id as part of the trace output. - -=back - -=head2 XS-assisted SWASHGET - -Some pure-perl code that the regexp engine was using to retrieve Unicode -properties and transliteration mappings has been reimplemented in XS -for faster execution. -(SADAHIRO Tomoyuki) - -=head2 Constant subroutines - -The interpreter internals now support a far more memory efficient form of -inlineable constants. Storing a reference to a constant value in a symbol -table is equivalent to a full typeglob referencing a constant subroutine, -but using about 400 bytes less memory. This proxy constant subroutine is -automatically upgraded to a real typeglob with subroutine if necessary. -The approach taken is analogous to the existing space optimisation for -subroutine stub declarations, which are stored as plain scalars in place -of the full typeglob. - -However, to aid backwards compatibility of existing code, which (wrongly) -does not expect anything other than typeglobs in symbol tables, nothing in -core uses this feature, other than the regression tests. - -Stubs for prototyped subroutines have been stored in symbol tables as plain -strings, and stubs for unprototyped subroutines as the number -1, since 5.005, -so code which assumes that the core only places typeglobs in symbol tables -has been making incorrect assumptions for over 10 years. - -=head1 New Platforms - -Compile support added for: - -=over - -=item * - -DragonFlyBSD - -=item * - -MidnightBSD - -=item * - -MirOS BSD - -=item * - -RISC OS - -=item * - -Cray XT4/Catamount - -=back - -=head1 Modules and Pragmata - -=head2 New Modules - -=over - -=item * - -C<Module::Pluggable> is a simple framework to create modules that accept -pluggable sub-modules. The bundled version is 3.8 - -=item * - -C<Module::CoreList> is a hash of hashes that is keyed on perl version as -indicated in C<$]>. The bundled version is 2.17 - -=item * - -C<Win32API::File> now available in core on Microsoft Windows. The bundled -version is 0.1001_01 - -=item * - -C<Devel::InnerPackage> finds all the packages defined by a single file. It is -part of the C<Module::Pluggable> distribution. The bundled version is 0.3 - -=back - -=head2 Updated Modules - -=over - -=item * - -C<attributes> upgraded to version 0.09 - -=item * - -C<AutoLoader> upgraded to version 5.67 - -=item * - -C<AutoSplit> upgraded to 1.06 - -=item * - -C<autouse> upgraded to version 1.06 - -=item * - -C<B> upgraded from 1.09_01 to 1.19 - -=over - -=item * - -provides new pad related abstraction macros C<B::NV::COP_SEQ_RANGE_LOW>, -C<B::NV::COP_SEQ_RANGE_HIGH>, C<B::NV::PARENT_PAD_INDEX>, -C<B::NV::PARENT_FAKELEX_FLAGS>, which hides the difference in storage in -5.10.0 and later. - -=item * - -provides C<B::sub_generation>, which exposes C<PL_sub_generation> - -=item * - -provides C<B::GV::isGV_with_GP>, which on pre-5.10 perls always returns true. - -=item * - -New type C<B::HE> added with methods C<VAL>, C<HASH> and C<SVKEY_force> - -=item * - -The C<B::GVf_IMPORTED_CV> flag is now set correctly when a proxy -constant subroutine is imported. - -=item * - -bugs fixed in the handling of C<PMOP>s. - -=item * - -C<B::BM::PREVIOUS> returns now C<U32>, not C<U16>. -C<B::CV::START> and C<B:CV::ROOT> return now C<NULL> on an XSUB, -C<B::CV::XSUB> and C<B::CV::XSUBANY> return 0 on a non-XSUB. - -=back - -=item * - -C<B::C> upgraded to 1.05 - -=item * - -C<B::Concise> upgraded to 0.76 - -=over - -=item * - -new option C<-src> causes the rendering of each statement (starting with -the nextstate OP) to be preceded by the first line of source code that -generates it. - -=item * - -new option C<-stash="somepackage">, C<require>s "somepackage", and then renders -each function defined in its namespace. - -=item * - -now has documentation of detailed hint symbols. - -=back - -=item * - -C<B::Debug> upgraded to version 1.05 - -=item * - -C<B::Deparse> upgraded to version 0.87 - -=over 4 - -=item * - -properly deparse C<print readpipe $x, $y>. - -=item * - -now handles C<''->()>, C<::()>, C<sub :: {}>, I<etc.> correctly [RT #43010]. -All bugs in parsing these kinds of syntax are now fixed: - - perl -MO=Deparse -e '"my %h = "->()' - perl -MO=Deparse -e '::->()' - perl -MO=Deparse -e 'sub :: {}' - perl -MO=Deparse -e 'package a; sub a::b::c {}' - perl -MO=Deparse -e 'sub the::main::road {}' - -=item * - -does B<not> deparse C<$^H{v_string}>, which is automatically set by the -internals. - -=back - -=item * - -C<B::Lint> upgraded to version 1.11 - -=item * - -C<B::Terse> upgraded to version 1.05 - -=item * - -C<base> upgraded to version 2.13 - -=over 4 - -=item * - -loading a module via base.pm would mask a global C<$SIG{__DIE__}> in that -module. - -=item * - -push all classes at once in C<@ISA> - -=back - -=item * - -C<Benchmark> upgraded to version 1.10 - -=item * - -C<bigint> upgraded to 0.23 - -=item * - -C<bignum> upgraded to 0.23 - -=item * - -C<bigrat> upgraded to 0.23 - -=item * - -C<blib> upgraded to 0.04 - -=item * - -C<Carp> upgraded to version 1.10 - -The argument backtrace code now shows C<undef> as C<undef>, -instead of a string I<"undef">. - -=item * - -C<CGI> upgraded to version 3.42 - -=item * - -C<charnames> upgraded to 1.06 - -=item * - -C<constant> upgraded to version 1.17 - -=item * - -C<CPAN> upgraded to version 1.9301 - -=item * - -C<Cwd> upgraded to version 3.29 with some platform specific -improvements (including for VMS). - -=item * - -C<Data::Dumper> upgraded to version 2.121_17 - -=over - -=item * - -Fixes hash iterator current position with the pure Perl version [RT #40668] - -=item * - -Performance enhancements, which will be most evident on platforms where -repeated calls to C's C<realloc()> are slow, such as Win32. - -=back - -=item * - -C<DB_File> upgraded to version 1.817 - -=item * - -C<DB_Filter> upgraded to version 0.02 - -=item * - -C<Devel::DProf> upgraded to version 20080331.00 - -=item * - -C<Devel::Peek> upgraded to version 1.04 - -=item * - -C<Devel::PPPort> upgraded to version 3.14 - -=item * - -C<diagnostics> upgraded to version 1.16 - -=item * - -C<Digest> upgraded to version 1.15 - -=item * - -C<Digest::MD5> upgraded to version 2.37 - -=item * - -C<DirHandle> upgraded to version 1.02 - -=over - -=item * - -now localises C<$.>, C<$@>, C<$!>, C<$^E>, and C<$?> before closing the -directory handle to suppress leaking any side effects of warnings about it -already being closed. - -=back - -=item * - -C<DynaLoader> upgraded to version 1.09 - -C<DynaLoader> can now dynamically load a loadable object from a file with a -non-default file extension. - -=item * - -C<Encode> upgraded to version 2.26 - -C<Encode::Alias> includes a fix for encoding "646" on Solaris (better known as -ASCII). - -=item * - -C<English> upgraded to version 1.03 - -=item * - -C<Errno> upgraded to version 1.10 - -=item * - -C<Exporter> upgraded to version 5.63 - -=item * - -C<ExtUtils::Command> upgraded to version 1.15 - -=item * - -C<ExtUtils::Constant> upgraded to version 0.21 - -=item * - -C<ExtUtils::Embed> upgraded to version 1.28 - -=item * - -C<ExtUtils::Install> upgraded to version 1.50_01 - -=item * - -C<ExtUtils::Installed> upgraded to version 1.43 - -=item * - -C<ExtUtils::MakeMaker> upgraded to version 6.48 - -=over - -=item * - -support for C<INSTALLSITESCRIPT> and C<INSTALLVENDORSCRIPT> -configuration. - -=back - -=item * - -C<ExtUtils::Manifest> upgraded to version 1.55 - -=item * - -C<ExtUtils::ParseXS> upgraded to version 2.19 - -=item * - -C<Fatal> upgraded to version 1.06 - -=over - -=item * - -allows built-ins in C<CORE::GLOBAL> to be made fatal. - -=back - -=item * - -C<Fcntl> upgraded to version 1.06 - -=item * - -C<fields> upgraded to version 2.12 - -=item * - -C<File::Basename> upgraded to version 2.77 - -=item * - -C<FileCache> upgraded to version 1.07 - -=item * - -C<File::Compare> upgraded to 1.1005 - -=item * - -C<File::Copy> upgraded to 2.13 - -=over 4 - -=item * - -now uses 3-arg open. - -=back - -=item * - -C<File::DosGlob> upgraded to 1.01 - -=item * - -C<File::Find> upgraded to version 1.13 - -=item * - -C<File::Glob> upgraded to version 1.06 - -=over - -=item * - -fixes spurious results with brackets inside braces. - -=back - -=item * - -C<File::Path> upgraded to version 2.07_02 - -=item * - -C<File::Spec> upgraded to version 3.29 - -=over 4 - -=item * - -improved handling of bad arguments. - -=item * - -some platform specific improvements (including for VMS and Cygwin), with -an optimisation on C<abs2rel> when handling both relative arguments. - -=back - -=item * - -C<File::stat> upgraded to version 1.01 - -=item * - -C<File::Temp> upgraded to version 0.20 - -=item * - -C<filetest> upgraded to version 1.02 - -=item * - -C<Filter::Util::Call> upgraded to version 1.07 - -=item * - -C<Filter::Simple> upgraded to version 0.83 - -=item * - -C<FindBin> upgraded to version 1.49 - -=item * - -C<GDBM_File> upgraded to version 1.09 - -=item * - -C<Getopt::Long> upgraded to version 2.37 - -=item * - -C<Getopt::Std> upgraded to version 1.06 - -=item * - -C<Hash::Util> upgraded to version 0.06 - -=item * - -C<if> upgraded to version 0.05 - -=item * - -C<IO> upgraded to version 1.23 - -Reduced number of calls to C<getpeername> in C<IO::Socket> - -=item * - -C<IPC::Open> upgraded to version 1.03 - -=item * - -C<IPC::Open3> upgraded to version 1.03 - -=item * - -C<IPC::SysV> upgraded to version 2.00 - -=item * - -C<lib> upgraded to version 0.61 - -=over - -=item * - -avoid warning about loading F<.par> files. - -=back - -=item * - -C<libnet> upgraded to version 1.22 - -=item * - -C<List::Util> upgraded to 1.19 - -=item * - -C<Locale::Maketext> upgraded to 1.13 - -=item * - -C<Math::BigFloat> upgraded to version 1.60 - -=item * - -C<Math::BigInt> upgraded to version 1.89 - -=item * - -C<Math::BigRat> upgraded to version 0.22 - -=over 4 - -=item * - -implements new C<as_float> method. - -=back - -=item * - -C<Math::Complex> upgraded to version 1.54. - -=item * - -C<Math::Trig> upgraded to version 1.18. - -=item * - -C<NDBM_File> upgraded to version 1.07 - -=over - -=item * - -improve F<g++> handling for systems using GDBM compatibility headers. - -=back - -=item * - -C<Net::Ping> upgraded to version 2.35 - -=item * - -C<NEXT> upgraded to version 0.61 - -=over - -=item * - -fix several bugs with C<NEXT> when working with C<AUTOLOAD>, C<eval> block, and -within overloaded stringification. - -=back - -=item * - -C<ODBM_File> upgraded to 1.07 - -=item * - -C<open> upgraded to 1.06 - -=item * - -C<ops> upgraded to 1.02 - -=item * - -C<PerlIO::encoding> upgraded to version 0.11 - -=item * - -C<PerlIO::scalar> upgraded to version 0.06 - -=over 4 - -=item * - -[RT #40267] C<PerlIO::scalar> doesn't respect readonly-ness. - -=back - -=item * - -C<PerlIO::via> upgraded to version 0.05 - -=item * - -C<Pod::Html> upgraded to version 1.09 - -=item * - -C<Pod::Parser> upgraded to version 1.35 - -=item * - -C<Pod::Usage> upgraded to version 1.35 - -=item * - -C<POSIX> upgraded to version 1.15 - -=over - -=item * - -C<POSIX> constants that duplicate those in C<Fcntl> are now imported from -C<Fcntl> and re-exported, rather than being duplicated by C<POSIX> - -=item * - -C<POSIX::remove> can remove empty directories. - -=item * - -C<POSIX::setlocale> safer to call multiple times. - -=item * - -C<POSIX::SigRt> added, which provides access to POSIX realtime signal -functionality on systems that support it. - -=back - -=item * - -C<re> upgraded to version 0.06_01 - -=item * - -C<Safe> upgraded to version 2.16 - -=item * - -C<Scalar::Util> upgraded to 1.19 - -=item * - -C<SDBM_File> upgraded to version 1.06 - -=item * - -C<SelfLoader> upgraded to version 1.17 - -=item * - -C<Shell> upgraded to version 0.72 - -=item * - -C<sigtrap> upgraded to version 1.04 - -=item * - -C<Socket> upgraded to version 1.81 - -=over - -=item * - -this fixes an optimistic use of C<gethostbyname> - -=back - -=item * - -C<Storable> upgraded to 2.19 - -=item * - -C<Switch> upgraded to version 2.13 - -=item * - -C<Sys::Syslog> upgraded to version 0.27 - -=item * - -C<Term::ANSIColor> upgraded to version 1.12 - -=item * - -C<Term::Cap> upgraded to version 1.12 - -=item * - -C<Term::ReadLine> upgraded to version 1.03 - -=item * - -C<Test::Builder> upgraded to version 0.80 - -=item * - -C<Test::Harness> upgraded version to 2.64 - -=over - -=item * - -this makes it able to handle newlines. - -=back - -=item * - -C<Test::More> upgraded to version 0.80 - -=item * - -C<Test::Simple> upgraded to version 0.80 - -=item * - -C<Text::Balanced> upgraded to version 1.98 - -=item * - -C<Text::ParseWords> upgraded to version 3.27 - -=item * - -C<Text::Soundex> upgraded to version 3.03 - -=item * - -C<Text::Tabs> upgraded to version 2007.1117 - -=item * - -C<Text::Wrap> upgraded to version 2006.1117 - -=item * - -C<Thread> upgraded to version 2.01 - -=item * - -C<Thread::Semaphore> upgraded to version 2.09 - -=item * - -C<Thread::Queue> upgraded to version 2.11 - -=over - -=item * - -added capability to add complex structures (e.g., hash of hashes) to queues. - -=item * - -added capability to dequeue multiple items at once. - -=item * - -added new methods to inspect and manipulate queues: C<peek>, C<insert> and -C<extract> - -=back - -=item * - -C<Tie::Handle> upgraded to version 4.2 - -=item * - -C<Tie::Hash> upgraded to version 1.03 - -=item * - -C<Tie::Memoize> upgraded to version 1.1 - -=over - -=item * - -C<Tie::Memoize::EXISTS> now correctly caches its results. - -=back - -=item * - -C<Tie::RefHash> upgraded to version 1.38 - -=item * - -C<Tie::Scalar> upgraded to version 1.01 - -=item * - -C<Tie::StdHandle> upgraded to version 4.2 - -=item * - -C<Time::gmtime> upgraded to version 1.03 - -=item * - -C<Time::Local> upgraded to version 1.1901 - -=item * - -C<Time::HiRes> upgraded to version 1.9715 with various build improvements -(including VMS) and minor platform-specific bug fixes (including -for HP-UX 11 ia64). - -=item * - -C<threads> upgraded to 1.71 - -=over - -=item * - -new thread state information methods: C<is_running>, C<is_detached> -and C<is_joinable>. C<list> method enhanced to return running or joinable -threads. - -=item * - -new thread signal method: C<kill> - -=item * - -added capability to specify thread stack size. - -=item * - -added capability to control thread exiting behavior. Added a new C<exit> -method. - -=back - -=item * - -C<threads::shared> upgraded to version 1.27 - -=over - -=item * - -smaller and faster implementation that eliminates one internal structure and -the consequent level of indirection. - -=item * - -user locks are now stored in a safer manner. - -=item * - -new function C<shared_clone> creates a copy of an object leaving -shared elements as-is and deep-cloning non-shared elements. - -=item * - -added new C<is_shared> method. - -=back - -=item * - -C<Unicode::Normalize> upgraded to version 1.02 - -=item * - -C<Unicode::UCD> upgraded to version 0.25 - -=item * - -C<warnings> upgraded to version 1.05_01 - -=item * - -C<Win32> upgraded to version 0.38 - -=over 4 - -=item * - -added new function C<GetCurrentProcessId> which returns the regular Windows -process identifier of the current process, even when called from within a fork. - -=back - -=item * - -C<XSLoader> upgraded to version 0.10 - -=item * - -C<XS::APItest> and C<XS::Typemap> are for internal use only and hence -no longer installed. Many more tests have been added to C<XS::APItest>. - -=back - -=head1 Utility Changes - -=head2 debugger upgraded to version 1.31 - -=over 4 - -=item * - -Andreas KE<ouml>nig contributed two functions to save and load the debugger -history. - -=item * - -C<NEXT::AUTOLOAD> no longer emits warnings under the debugger. - -=item * - -The debugger should now correctly find tty the device on OS X 10.5 and VMS -when the program C<fork>s. - -=item * - -LVALUE subs now work inside the debugger. - -=back - -=head2 F<perlthanks> - -Perl 5.8.9 adds a new utility F<perlthanks>, which is a variant of F<perlbug>, -but for sending non-bug-reports to the authors and maintainers of Perl. -Getting nothing but bug reports can become a bit demoralising - we'll see if -this changes things. - -=head2 F<perlbug> - -F<perlbug> now checks if you're reporting about a non-core module and suggests -you report it to the CPAN author instead. - -=head2 F<h2xs> - -=over - -=item * - -won't define an empty string as a constant [RT #25366] - -=item * - -has examples for C<h2xs -X> - -=back - -=head2 F<h2ph> - -=over 4 - -=item * - -now attempts to deal sensibly with the difference in path implications -between C<""> and C<< E<lt>E<gt> >> quoting in C<#include> statements. - -=item * - -now generates correct code for C<#if defined A || defined B> -[RT #39130] - -=back - -=head1 New Documentation - -As usual, the documentation received its share of corrections, clarifications -and other nitfixes. More C<< X<...> >> tags were added for indexing. - -L<perlunitut> is a tutorial written by Juerd Waalboer on Unicode-related -terminology and how to correctly handle Unicode in Perl scripts. - -L<perlunicode> is updated in section user defined properties. - -L<perluniintro> has been updated in the example of detecting data that is not -valid in particular encoding. - -L<perlcommunity> provides an overview of the Perl Community along with further -resources. - -L<CORE> documents the pseudo-namespace for Perl's core routines. - -=head1 Changes to Existing Documentation - -L<perlglossary> adds I<deprecated modules and features> and I<to be dropped modules>. - -L<perlhack> has been updated and added resources on smoke testing. - -The Perl FAQs (F<perlfaq1>..F<perlfaq9>) have been updated. - -L<perlcheat> is updated with better details on C<\w>, C<\d>, and C<\s>. - -L<perldebug> is updated with information on how to call the debugger. - -L<perldiag> documentation updated with I<subroutine with an ampersand> on the -argument to C<exists> and C<delete> and also several terminology updates on -warnings. - -L<perlfork> documents the limitation of C<exec> inside pseudo-processes. - -L<perlfunc>: - -=over - -=item * - -Documentation is fixed in section C<caller> and C<pop>. - -=item * - -Function C<alarm> now mentions C<Time::HiRes::ualarm> in preference -to C<select>. - -=item * - -Regarding precedence in C<-X>, filetest operators are the same as unary -operators, but not regarding parsing and parentheses (spotted by Eirik Berg -Hanssen). - -=item * - -C<reverse> function documentation received scalar context examples. - -=back - -L<perllocale> documentation is adjusted for number localization and -C<POSIX::setlocale> to fix Debian bug #379463. - -L<perlmodlib> is updated with C<CPAN::API::HOWTO> and -C<Sys::Syslog::win32::Win32> - -L<perlre> documentation updated to reflect the differences between -C<[[:xxxxx:]]> and C<\p{IsXxxxx}> matches. Also added section on C</g> and -C</c> modifiers. - -L<perlreguts> describe the internals of the regular expressions engine. It has -been contributed by Yves Orton. - -L<perlrebackslash> describes all perl regular expression backslash and escape -sequences. - -L<perlrecharclass> describes the syntax and use of character classes in -Perl Regular Expressions. - -L<perlrun> is updated to clarify on the hash seed I<PERL_HASH_SEED>. Also more -information in options C<-x> and C<-u>. - -L<perlsub> example is updated to use a lexical variable for C<opendir> syntax. - -L<perlvar> fixes confusion about real GID C<$(> and effective GID C<$)>. - -Perl thread tutorial example is fixed in section -L<perlthrtut/Queues: Passing Data Around> and L<perlthrtut>. - -L<perlhack> documentation extensively improved by Jarkko Hietaniemi and others. - -L<perltoot> provides information on modifying C<@UNIVERSAL::ISA>. - -L<perlport> documentation extended to include different C<kill(-9, ...)> -semantics on Windows. It also clearly states C<dump> is not supported on Win32 -and cygwin. - -F<INSTALL> has been updated and modernised. - -=head1 Performance Enhancements - -=over - -=item * - -The default since perl 5.000 has been for perl to create an empty scalar -with every new typeglob. The increased use of lexical variables means that -most are now unused. Thanks to Nicholas Clark's efforts, Perl can now be -compiled with C<-DPERL_DONT_CREATE_GVSV> to avoid creating these empty scalars. -This will significantly decrease the number of scalars allocated for all -configurations, and the number of scalars that need to be copied for ithread -creation. Whilst this option is binary compatible with existing perl -installations, it does change a long-standing assumption about the -internals, hence it is not enabled by default, as some third party code may -rely on the old behaviour. - -We would recommend testing with this configuration on new deployments of -perl, particularly for multi-threaded servers, to see whether all third party -code is compatible with it, as this configuration may give useful performance -improvements. For existing installations we would not recommend changing to -this configuration unless thorough testing is performed before deployment. - -=item * - -C<diagnostics> no longer uses C<$&>, which results in large speedups -for regexp matching in all code using it. - -=item * - -Regular expressions classes of a single character are now treated the same as -if the character had been used as a literal, meaning that code that uses -char-classes as an escaping mechanism will see a speedup. (Yves Orton) - -=item * - -Creating anonymous array and hash references (ie. C<[]> and C<{}>) now incurs -no more overhead than creating an anonymous list or hash. Nicholas Clark -provided changes with a saving of two ops and one stack push, which was measured -as a slightly better than 5% improvement for these operations. - -=item * - -Many calls to C<strlen()> have been eliminated, either because the length was -already known, or by adopting or enhancing APIs that pass lengths. This has -been aided by the adoption of a C<my_sprintf()> wrapper, which returns the -correct C89 value - the length of the formatted string. Previously we could -not rely on the return value of C<sprintf()>, because on some ancient but -extant platforms it still returns C<char *>. - -=item * - -C<index> is now faster if the search string is stored in UTF-8 but only contains -characters in the Latin-1 range. - -=item * - -The Unicode swatch cache inside the regexp engine is now used. (the lookup had -a key mismatch, present since the initial implementation). [RT #42839] - -=back - -=head1 Installation and Configuration Improvements - -=head2 Relocatable installations - -There is now F<Configure> support for creating a relocatable perl tree. If -you F<Configure> with C<-Duserelocatableinc>, then the paths in C<@INC> (and -everything else in C<%Config>) can be optionally located via the path of the -F<perl> executable. - -At start time, if any paths in C<@INC> or C<Config> that F<Configure> marked -as relocatable (by starting them with C<".../">), then they are prefixed the -directory of C<$^X>. This allows the relocation can be configured on a -per-directory basis, although the default with C<-Duserelocatableinc> is that -everything is relocated. The initial install is done to the original configured -prefix. - -=head2 Configuration improvements - -F<Configure> is now better at removing temporary files. Tom Callaway -(from RedHat) also contributed patches that complete the set of flags -passed to the compiler and the linker, in particular that C<-fPIC> is now -enabled on Linux. It will also croak when your F</dev/null> isn't a device. - -A new configuration variable C<d_pseudofork> has been to F<Configure>, and is -available as C<$Config{d_pseudofork}> in the C<Config> module. This -distinguishes real C<fork> support from the pseudofork emulation used on -Windows platforms. - -F<Config.pod> and F<config.sh> are now placed correctly for cross-compilation. - -C<$Config{useshrplib}> is now 'true' rather than 'yes' when using a shared perl -library. - -=head2 Compilation improvements - -Parallel makes should work properly now, although there may still be problems -if C<make test> is instructed to run in parallel. - -Many compilation warnings have been cleaned up. A very stubborn compiler -warning in C<S_emulate_eaccess()> was killed after six attempts. -F<g++> support has been tuned, especially for FreeBSD. - -F<mkppport> has been integrated, and all F<ppport.h> files in the core will now -be autogenerated at build time (and removed during cleanup). - -=head2 Installation improvements. - -F<installman> now works with C<-Duserelocatableinc> and C<DESTDIR>. - -F<installperl> no longer installs: - -=over 4 - -=item * - -static library files of statically linked extensions when a shared perl library -is being used. (They are not needed. See L</Windows> below). - -=item * - -F<SIGNATURE> and F<PAUSE*.pub> (CPAN files) - -=item * - -F<NOTES> and F<PATCHING> (ExtUtils files) - -=item * - -F<perlld> and F<ld2> (Cygwin files) - -=back - -=head2 Platform Specific Changes - -There are improved hints for AIX, Cygwin, DEC/OSF, FreeBSD, HP/UX, Irix 6 -Linux, MachTen, NetBSD, OS/390, QNX, SCO, Solaris, SunOS, System V Release 5.x -(UnixWare 7, OpenUNIX 8), Ultrix, UMIPS, uts and VOS. - -=head3 FreeBSD - -=over 4 - -=item * - -Drop C<-std=c89> and C<-ansi> if using C<long long> as the main integral type, -else in FreeBSD 6.2 (and perhaps other releases), system headers do not -declare some functions required by perl. - -=back - -=head3 Solaris - -=over 4 - -=item * - -Starting with Solaris 10, we do not want versioned shared libraries, because -those often indicate a private use only library. These problems could often -be triggered when L<SUNWbdb> (Berkeley DB) was installed. Hence if Solaris 10 -is detected set C<ignore_versioned_solibs=y>. - -=back - -=head3 VMS - -=over 4 - -=item * - -Allow IEEE math to be deselected on OpenVMS I64 (but it remains the default). - -=item * - -Record IEEE usage in C<config.h> - -=item * - -Help older VMS compilers by using C<ccflags> when building C<munchconfig.exe>. - -=item * - -Don't try to build old C<Thread> extension on VMS when C<-Duseithreads> has -been chosen. - -=item * - -Passing a raw string of "NaN" to F<nawk> causes a core dump - so the string -has been changed to "*NaN*" - -=item * - -F<t/op/stat.t> tests will now test hard links on VMS if they are supported. - -=back - -=head3 Windows - -=over 4 - -=item * - -When using a shared perl library F<installperl> no longer installs static -library files, import library files and export library files (of statically -linked extensions) and empty bootstrap files (of dynamically linked -extensions). This fixes a problem building PAR-Packer on Win32 with a debug -build of perl. - -=item * - -Various improvements to the win32 build process, including support for Visual -C++ 2005 Express Edition (aka Visual C++ 8.x). - -=item * - -F<perl.exe> will now have an icon if built with MinGW or Borland. - -=item * - -Improvements to the perl-static.exe build process. - -=item * - -Add Win32 makefile option to link all extensions statically. - -=item * - -The F<WinCE> directory has been merged into the F<Win32> directory. - -=item * - -C<setlocale> tests have been re-enabled for Windows XP onwards. - -=back - -=head1 Selected Bug Fixes - -=head2 Unicode - -Many many bugs related to the internal Unicode implementation (UTF-8) have -been fixed. In particular, long standing bugs related to returning Unicode -via C<tie>, overloading or C<$@> are now gone, some of which were never -reported. - -C<unpack> will internally convert the string back from UTF-8 on numeric types. -This is a compromise between the full consistency now in 5.10, and the current -behaviour, which is often used as a "feature" on string types. - -Using C<:crlf> and C<UTF-16> IO layers together will now work. - -Fixed problems with C<split>, Unicode C</\s+/> and C</ \0/>. - -Fixed bug RT #40641 - encoding of Unicode characters in regular expressions. - -Fixed a bug where using certain patterns in a regexp led to a panic. -[RT #45337] - -Perl no longer segfaults (due to infinite internal recursion) if the locale's -character is not UTF-8 [RT #41442]: - - use open ':locale'; - print STDERR "\x{201e}"; # „ - -=head2 PerlIO - -Inconsistencies have been fixed in the reference counting PerlIO uses to keep -track of Unix file descriptors, and the API used by XS code to manage getting -and releasing C<FILE *>s - -=head2 Magic - -Several bugs have been fixed in Magic, the internal system used to implement -features such as C<tie>, tainting and threads sharing. - -C<undef @array> on a tied array now correctly calls the C<CLEAR> method. - -Some of the bitwise ops were not checking whether their arguments were magical -before using them. [RT #24816] - -Magic is no longer invoked twice by the expression C<\&$x> - -A bug with assigning large numbers and tainting has been resolved. -[RT #40708] - -A new entry has been added to the MAGIC vtable - C<svt_local>. This is used -when copying magic to the new value during C<local>, allowing certain problems -with localising shared variables to be resolved. - -For the implementation details, see L<perlguts/Magic Virtual Tables>. - -=head2 Reblessing overloaded objects now works - -Internally, perl object-ness is on the referent, not the reference, even -though methods can only be called via a reference. However, the original -implementation of overloading stored flags related to overloading on the -reference, relying on the flags being copied when the reference was copied, -or set at the creation of a new reference. This manifests in a bug - if you -rebless an object from a class that has overloading, into one that does not, -then any other existing references think that they (still) point to an -overloaded object, choose these C code paths, and then throw errors. -Analogously, blessing into an overloaded class when other references exist will -result in them not using overloading. - -The implementation has been fixed for 5.10, but this fix changes the semantics -of flag bits, so is not binary compatible, so can't be applied to 5.8.9. -However, 5.8.9 has a work-around that implements the same bug fix. If the -referent has multiple references, then all the other references are located and -corrected. A full search is avoided whenever possible by scanning lexicals -outwards from the current subroutine, and the argument stack. - -A certain well known Linux vendor applied incomplete versions of this bug fix -to their F</usr/bin/perl> and then prematurely closed bug reports about -performance issues without consulting back upstream. This not being enough, -they then proceeded to ignore the necessary fixes to these unreleased changes -for 11 months, until massive pressure was applied by their long-suffering -paying customers, catalysed by the failings being featured on a prominent blog -and Slashdot. - -=head2 C<strict> now propagates correctly into string evals - -Under 5.8.8 and earlier: - - $ perl5.8.8 -e 'use strict; eval "use foo bar" or die $@' - Can't locate foo.pm in @INC (@INC contains: ... .) at (eval 1) line 2. - BEGIN failed--compilation aborted at (eval 1) line 2. - -Under 5.8.9 and later: - - $ perl5.8.9 -e 'use strict; eval "use foo bar" or die $@' - Bareword "bar" not allowed while "strict subs" in use at (eval 1) line 1. - -This may cause problems with programs that parse the error message and rely -on the buggy behaviour. - -=head2 Other fixes - -=over - -=item * - -The tokenizer no longer treats C<=cute> (and other words beginning -with C<=cut>) as a synonym for C<=cut>. - -=item * - -Calling C<CORE::require> - -C<CORE::require> and C<CORE::do> were always parsed as C<require> and C<do> -when they were overridden. This is now fixed. - -=item * - -Stopped memory leak on long F</etc/groups> entries. - -=item * - -C<while (my $x ...) { ...; redo }> shouldn't C<undef $x>. - -In the presence of C<my> in the conditional of a C<while()>, C<until()>, -or C<for(;;)> loop, we now add an extra scope to the body so that C<redo> -doesn't C<undef> the lexical. - -=item * - -The C<encoding> pragma now correctly ignores anything following an C<@> -character in the C<LC_ALL> and C<LANG> environment variables. [RT # 49646] - -=item * - -A segfault observed with some F<gcc> 3.3 optimisations is resolved. - -=item * - -A possible segfault when C<unpack> used in scalar context with C<()> groups -is resolved. [RT #50256] - -=item * - -Resolved issue where C<$!> could be changed by a signal handler interrupting -a C<system> call. - -=item * - -Fixed bug RT #37886, symbolic dereferencing was allowed in the argument of -C<defined> even under the influence of C<use strict 'refs'>. - -=item * - -Fixed bug RT #43207, where C<lc>/C<uc> inside C<sort> affected the return -value. - -=item * - -Fixed bug RT #45607, where C<*{"BONK"} = \&{"BONK"}> didn't work correctly. - -=item * - -Fixed bug RT #35878, croaking from a XSUB called via C<goto &xsub> corrupts perl -internals. - -=item * - -Fixed bug RT #32539, F<DynaLoader.o> is moved into F<libperl.so> to avoid the -need to statically link DynaLoader into the stub perl executable. With this -F<libperl.so> provides everything needed to get a functional embedded perl -interpreter to run. - -=item * - -Fix bug RT #36267 so that assigning to a tied hash doesn't change the -underlying hash. - -=item * - -Fix bug RT #6006, regexp replaces using large replacement variables -fail some of the time, I<i.e.> when substitution contains something -like C<${10}> (note the bracket) instead of just C<$10>. - -=item * - -Fix bug RT #45053, C<Perl_newCONSTSUB()> is now thread safe. - -=back - -=head2 Platform Specific Fixes - -=head3 Darwin / MacOS X - -=over 4 - -=item * - -Various improvements to 64 bit builds. - -=item * - -Mutex protection added in C<PerlIOStdio_close()> to avoid race conditions. -Hopefully this fixes failures in the threads tests F<free.t> and F<blocks.t>. - -=item * - -Added forked terminal support to the debugger, with the ability to update the -window title. - -=back - -=head3 OS/2 - -=over 4 - -=item * - -A build problem with specifying C<USE_MULTI> and C<USE_ITHREADS> but without -C<USE_IMP_SYS> has been fixed. - -=item * - -C<OS2::REXX> upgraded to version 1.04 - -=back - -=head3 Tru64 - -=over 4 - -=item * - -Aligned floating point build policies for F<cc> and F<gcc>. - -=back - -=head3 RedHat Linux - -=over 4 - -=item * - -Revisited a patch from 5.6.1 for RH7.2 for Intel's F<icc> [RT #7916], added an -additional check for C<$Config{gccversion}>. - -=back - -=head3 Solaris/i386 - -=over 4 - -=item * - -Use C<-DPTR_IS_LONG> when using 64 bit integers - -=back - -=head3 VMS - -=over 4 - -=item * - -Fixed C<PerlIO::Scalar> in-memory file record-style reads. - -=item * - -pipe shutdown at process exit should now be more robust. - -=item * - -Bugs in VMS exit handling tickled by C<Test::Harness> 2.64 have been fixed. - -=item * - -Fix C<fcntl()> locking capability test in F<configure.com>. - -=item * - -Replaced C<shrplib='define'> with C<useshrplib='true'> on VMS. - -=back - -=head3 Windows - -=over 4 - -=item * - -C<File::Find> used to fail when the target directory is a bare drive letter and -C<no_chdir> is 1 (the default is 0). [RT #41555] - -=item * - -A build problem with specifying C<USE_MULTI> and C<USE_ITHREADS> but without -C<USE_IMP_SYS> has been fixed. - -=item * - -The process id is no longer truncated to 16 bits on some Windows platforms -( http://bugs.activestate.com/show_bug.cgi?id=72443 ) - -=item * - -Fixed bug RT #54828 in F<perlio.c> where calling C<binmode> on Win32 and Cygwin -may cause a segmentation fault. - -=back - -=head2 Smaller fixes - -=over 4 - -=item * - -It is now possible to overload C<eq> when using C<nomethod>. - -=item * - -Various problems using C<overload> with 64 bit integers corrected. - -=item * - -The reference count of C<PerlIO> file descriptors is now correctly handled. - -=item * - -On VMS, escaped dots will be preserved when converted to Unix syntax. - -=item * - -C<keys %+> no longer throws an C<'ambiguous'> warning. - -=item * - -Using C<#!perl -d> could trigger an assertion, which has been fixed. - -=item * - -Don't stringify tied code references in C<@INC> when calling C<require>. - -=item * - -Code references in C<@INC> report the correct file name when C<__FILE__> is -used. - -=item * - -Width and precision in sprintf didn't handle characters above 255 correctly. -[RT #40473] - -=item * - -List slices with indices out of range now work more consistently. -[RT #39882] - -=item * - -A change introduced with perl 5.8.1 broke the parsing of arguments of the form -C<-foo=bar> with the C<-s> on the <#!> line. This has been fixed. See -http://bugs.activestate.com/show_bug.cgi?id=43483 - -=item * - -C<tr///> is now threadsafe. Previously it was storing a swash inside its OP, -rather than in a pad. - -=item * - -F<pod2html> labels anchors more consistently and handles nested definition -lists better. - -=item * - -C<threads> cleanup veto has been extended to include C<perl_free()> and -C<perl_destruct()> - -=item * - -On some systems, changes to C<$ENV{TZ}> would not always be -respected by the underlying calls to C<localtime_r()>. Perl now -forces the inspection of the environment on these systems. - -=item * - -The special variable C<$^R> is now more consistently set when executing -regexps using the C<(?{...})> construct. In particular, it will still -be set even if backreferences or optional sub-patterns C<(?:...)?> are -used. - -=back - -=head1 New or Changed Diagnostics - -=head2 panic: sv_chop %s - -This new fatal error occurs when the C routine C<Perl_sv_chop()> was passed a -position that is not within the scalar's string buffer. This is caused by -buggy XS code, and at this point recovery is not possible. - -=head2 Maximal count of pending signals (%s) exceeded - -This new fatal error occurs when the perl process has to abort due to -too many pending signals, which is bound to prevent perl from being -able to handle further incoming signals safely. - -=head2 panic: attempt to call %s in %s - -This new fatal error occurs when the ACL version file test operator is used -where it is not available on the current platform. Earlier checks mean that -it should never be possible to get this. - -=head2 FETCHSIZE returned a negative value - -New error indicating that a tied array has claimed to have a negative -number of elements. - -=head2 Can't upgrade %s (%d) to %d - -Previously the internal error from the SV upgrade code was the less informative -I<Can't upgrade that kind of scalar>. It now reports the current internal type, -and the new type requested. - -=head2 %s argument is not a HASH or ARRAY element or a subroutine - -This error, thrown if an invalid argument is provided to C<exists> now -correctly includes "or a subroutine". [RT #38955] - -=head2 Cannot make the non-overridable builtin %s fatal - -This error in C<Fatal> previously did not show the name of the builtin in -question (now represented by %s above). - -=head2 Unrecognized character '%s' in column %d - -This error previously did not state the column. - -=head2 Offset outside string - -This can now also be generated by a C<seek> on a file handle using -C<PerlIO::scalar>. - -=head2 Invalid escape in the specified encoding in regexp; marked by <-- HERE in m/%s/ - -New error, introduced as part of the fix to RT #40641 to handle encoding -of Unicode characters in regular expression comments. - -=head2 Your machine doesn't support dump/undump. - -A more informative fatal error issued when calling C<dump> on Win32 and -Cygwin. (Given that the purpose of C<dump> is to abort with a core dump, -and core dumps can't be produced on these platforms, this is more useful than -silently exiting.) - -=head1 Changed Internals - -The perl sources can now be compiled with a C++ compiler instead of a C -compiler. A necessary implementation details is that under C++, the macro -C<XS> used to define XSUBs now includes an C<extern "C"> definition. A side -effect of this is that B<C++> code that used the construction - - typedef XS(SwigPerlWrapper); - -now needs to be written - - typedef XSPROTO(SwigPerlWrapper); - -using the new C<XSPROTO> macro, in order to compile. C extensions are -unaffected, although C extensions are encouraged to use C<XSPROTO> too. -This change was present in the 5.10.0 release of perl, so any actively -maintained code that happened to use this construction should already have -been adapted. Code that needs changing will fail with a compilation error. - -C<set> magic on localizing/assigning to a magic variable will now only -trigger for I<container magics>, i.e. it will for C<%ENV> or C<%SIG> -but not for C<$#array>. - -The new API macro C<newSVpvs()> can be used in place of constructions such as -C<newSVpvn("ISA", 3)>. It takes a single string constant, and at C compile -time determines its length. - -The new API function C<Perl_newSV_type()> can be used as a more efficient -replacement of the common idiom - - sv = newSV(0); - sv_upgrade(sv, type); - -Similarly C<Perl_newSVpvn_flags()> can be used to combine -C<Perl_newSVpv()> with C<Perl_sv_2mortal()> or the equivalent -C<Perl_sv_newmortal()> with C<Perl_sv_setpvn()> - -Two new macros C<mPUSHs()> and C<mXPUSHs()> are added, to make it easier to -push mortal SVs onto the stack. They were then used to fix several bugs where -values on the stack had not been mortalised. - -A C<Perl_signbit()> function was added to test the sign of an C<NV>. It -maps to the system one when available. - -C<Perl_av_reify()>, C<Perl_lex_end()>, C<Perl_mod()>, C<Perl_op_clear()>, -C<Perl_pop_return()>, C<Perl_qerror()>, C<Perl_setdefout()>, -C<Perl_vivify_defelem()> and C<Perl_yylex()> are now visible to extensions. -This was required to allow C<Data::Alias> to work on Windows. - -C<Perl_find_runcv()> is now visible to perl core extensions. This was required -to allow C<Sub::Current> to work on Windows. - -C<ptr_table*> functions are now available in unthreaded perl. C<Storable> -takes advantage of this. - -There have been many small cleanups made to the internals. In particular, -C<Perl_sv_upgrade()> has been simplified considerably, with a straight-through -code path that uses C<memset()> and C<memcpy()> to initialise the new body, -rather than assignment via multiple temporary variables. It has also -benefited from simplification and de-duplication of the arena management -code. - -A lot of small improvements in the code base were made due to reports from -the Coverity static code analyzer. - -Corrected use and documentation of C<Perl_gv_stashpv()>, C<Perl_gv_stashpvn()>, -C<Perl_gv_stashsv()> functions (last parameter is a bitmask, not boolean). - -C<PERL_SYS_INIT>, C<PERL_SYS_INIT3> and C<PERL_SYS_TERM> macros have been -changed into functions. - -C<PERLSYS_TERM> no longer requires a context. C<PerlIO_teardown()> -is now called without a context, and debugging output in this function has -been disabled because that required that an interpreter was present, an invalid -assumption at termination time. - -All compile time options which affect binary compatibility have been grouped -together into a global variable (C<PL_bincompat_options>). - -The values of C<PERL_REVISION>, C<PERL_VERSION> and C<PERL_SUBVERSION> are -now baked into global variables (and hence into any shared perl library). -Additionally under C<MULTIPLICITY>, the perl executable now records the size of -the interpreter structure (total, and for this version). Coupled with -C<PL_bincompat_options> this will allow 5.8.10 (and later), when compiled with a -shared perl library, to perform sanity checks in C<main()> to verify that the -shared library is indeed binary compatible. - -Symbolic references can now have embedded NULs. The new public function -C<Perl_get_cvn_flags()> can be used in extensions if you have to handle them. - -=head2 Macro cleanups - -The core code, and XS code in F<ext> that is not dual-lived on CPAN, no longer -uses the macros C<PL_na>, C<NEWSV()>, C<Null()>, C<Nullav>, C<Nullcv>, -C<Nullhv>, C<Nullhv> I<etc>. Their use is discouraged in new code, -particularly C<PL_na>, which is a small performance hit. - -=head1 New Tests - -Many modules updated from CPAN incorporate new tests. Some core specific -tests have been added: - -=over 4 - -=item ext/DynaLoader/t/DynaLoader.t - -Tests for the C<DynaLoader> module. - -=item t/comp/fold.t - -Tests for compile-time constant folding. - -=item t/io/pvbm.t - -Tests incorporated from 5.10.0 which check that there is no unexpected -interaction between the internal types C<PVBM> and C<PVGV>. - -=item t/lib/proxy_constant_subs.t - -Tests for the new form of constant subroutines. - -=item t/op/attrhand.t - -Tests for C<Attribute::Handlers>. - -=item t/op/dbm.t - -Tests for C<dbmopen>. - -=item t/op/inccode-tie.t - -Calls all tests in F<t/op/inccode.t> after first tying C<@INC>. - -=item t/op/incfilter.t - -Tests for source filters returned from code references in C<@INC>. - -=item t/op/kill0.t - -Tests for RT #30970. - -=item t/op/qrstack.t - -Tests for RT #41484. - -=item t/op/qr.t - -Tests for the C<qr//> construct. - -=item t/op/regexp_qr_embed.t - -Tests for the C<qr//> construct within another regexp. - -=item t/op/regexp_qr.t - -Tests for the C<qr//> construct. - -=item t/op/rxcode.t - -Tests for RT #32840. - -=item t/op/studytied.t - -Tests for C<study> on tied scalars. - -=item t/op/substT.t - -Tests for C<subst> run under C<-T> mode. - -=item t/op/symbolcache.t - -Tests for C<undef> and C<delete> on stash entries that are bound to -subroutines or methods. - -=item t/op/upgrade.t - -Tests for C<Perl_sv_upgrade()>. - -=item t/mro/package_aliases.t - -MRO tests for C<isa> and package aliases. - -=item t/pod/twice.t - -Tests for calling C<Pod::Parser> twice. - -=item t/run/cloexec.t - -Tests for inheriting file descriptors across C<exec> (close-on-exec). - -=item t/uni/cache.t - -Tests for the UTF-8 caching code. - -=item t/uni/chr.t - -Test that strange encodings do not upset C<Perl_pp_chr()>. - -=item t/uni/greek.t - -Tests for RT #40641. - -=item t/uni/latin2.t - -Tests for RT #40641. - -=item t/uni/overload.t - -Tests for returning Unicode from overloaded values. - -=item t/uni/tie.t - -Tests for returning Unicode from tied variables. - -=back - -=head1 Known Problems - -There are no known new bugs. - -However, programs that rely on bugs that have been fixed will have problems. -Also, many bug fixes present in 5.10.0 can't be back-ported to the 5.8.x -branch, because they require changes that are binary incompatible, or because -the code changes are too large and hence too risky to incorporate. - -We have only limited volunteer labour, and the maintenance burden is -getting increasingly complex. Hence this will be the last significant -release of the 5.8.x series. Any future releases of 5.8.x will likely -only be to deal with security issues, and platform build -failures. Hence you should look to migrating to 5.10.x, if you have -not started already. Alternatively, if business requirements constrain -you to continue to use 5.8.x, you may wish to consider commercial -support from firms such as ActiveState. - -=head1 Platform Specific Notes - -=head2 Win32 - -C<readdir()>, C<cwd()>, C<$^X> and C<@INC> now use the alternate (short) -filename if the long name is outside the current codepage (Jan Dubois). - -=head3 Updated Modules - -=over 4 - -=item * - -C<Win32> upgraded to version 0.38. Now has a documented 'WinVista' response -from C<GetOSName> and support for Vista's privilege elevation in C<IsAdminUser>. -Support for Unicode characters in path names. Improved cygwin and Win64 -compatibility. - -=item * - -C<Win32API> updated to 0.1001_01 - -=item * - -C<killpg()> support added to C<MSWin32> (Jan Dubois). - -=item * - -C<File::Spec::Win32> upgraded to version 3.2701 - -=back - -=head2 OS/2 - -=head3 Updated Modules - -=over 4 - -=item * - -C<OS2::Process> upgraded to 1.03 - -Ilya Zakharevich has added and documented several C<Window*> and C<Clipbrd*> -functions. - -=item * - -C<OS2::REXX::DLL>, C<OS2::REXX> updated to version 1.03 - -=back - -=head2 VMS - -=head3 Updated Modules - -=over 4 - -=item * - -C<DCLsym> upgraded to version 1.03 - -=item * - -C<Stdio> upgraded to version 2.4 - -=item * - -C<VMS::XSSymSet> upgraded to 1.1. - -=back - -=head1 Obituary - -Nick Ing-Simmons, long time Perl hacker, author of the C<Tk> and C<Encode> -modules, F<perlio.c> in the core, and 5.003_02 pumpking, died of a heart -attack on 25th September 2006. He will be missed. - -=head1 Acknowledgements - -Some of the work in this release was funded by a TPF grant. - -Steve Hay worked behind the scenes working out the causes of the differences -between core modules, their CPAN releases, and previous core releases, and -the best way to rectify them. He doesn't want to do it again. I know this -feeling, and I'm very glad he did it this time, instead of me. - -Paul Fenwick assembled a team of 18 volunteers, who broke the back of writing -this document. In particular, Bradley Dean, Eddy Tan, and Vincent Pit -provided half the team's contribution. - -Schwern verified the list of updated module versions, correcting quite a few -errors that I (and everyone else) had missed, both wrongly stated module -versions, and changed modules that had not been listed. - -The crack Berlin-based QA team of Andreas KE<ouml>nig and Slaven Rezic -tirelessly re-built snapshots, tested most everything CPAN against -them, and then identified the changes responsible for any module regressions, -ensuring that several show-stopper bugs were stomped before the first release -candidate was cut. - -The other core committers contributed most of the changes, and applied most -of the patches sent in by the hundreds of contributors listed in F<AUTHORS>. - -And obviously, Larry Wall, without whom we wouldn't have Perl. - -=head1 Reporting Bugs - -If you find what you think is a bug, you might check the articles -recently posted to the comp.lang.perl.misc newsgroup and the perl -bug database at http://bugs.perl.org. There may also be -information at http://www.perl.org, the Perl Home Page. - -If you believe you have an unreported bug, please run the B<perlbug> -program included with your release. Be sure to trim your bug down -to a tiny but sufficient test case. Your bug report, along with the -output of C<perl -V>, will be sent off to perlbug@perl.org to be -analysed by the Perl porting team. You can browse and search -the Perl 5 bugs at http://bugs.perl.org/ - -If the bug you are reporting has security implications, which make it -inappropriate to send to a publicly archived mailing list, then please send -it to perl5-security-report@perl.org. This points to a closed subscription -unarchived mailing list, which includes -all the core committers, who will be able -to help assess the impact of issues, figure out a resolution, and help -co-ordinate the release of patches to mitigate or fix the problem across all -platforms on which Perl is supported. Please only use this address for security -issues in the Perl core, not for modules independently distributed on CPAN. - -=head1 SEE ALSO - -The F<Changes> file for exhaustive details on what changed. - -The F<INSTALL> file for how to build Perl. - -The F<README> file for general stuff. - -The F<Artistic> and F<Copying> files for copyright information. - -=cut |