163 lines
4.4 KiB
Plaintext
163 lines
4.4 KiB
Plaintext
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=head1 NAME
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perl582delta - what is new for perl v5.8.2
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=head1 DESCRIPTION
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This document describes differences between the 5.8.1 release and
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the 5.8.2 release.
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If you are upgrading from an earlier release such as 5.6.1, first read
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the L<perl58delta>, which describes differences between 5.6.0 and
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5.8.0, and the L<perl581delta>, which describes differences between
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5.8.0 and 5.8.1.
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=head1 Incompatible Changes
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For threaded builds for modules calling certain re-entrant system calls,
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binary compatibility was accidentally lost between 5.8.0 and 5.8.1.
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Binary compatibility with 5.8.0 has been restored in 5.8.2, which
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necessitates breaking compatibility with 5.8.1. We see this as the
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lesser of two evils.
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This will only affect people who have a threaded perl 5.8.1, and compiled
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modules which use these calls, and now attempt to run the compiled modules
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with 5.8.2. The fix is to re-compile and re-install the modules using 5.8.2.
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=head1 Core Enhancements
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=head2 Hash Randomisation
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The hash randomisation introduced with 5.8.1 has been amended. It
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transpired that although the implementation introduced in 5.8.1 was source
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compatible with 5.8.0, it was not binary compatible in certain cases. 5.8.2
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contains an improved implementation which is both source and binary
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compatible with both 5.8.0 and 5.8.1, and remains robust against the form of
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attack which prompted the change for 5.8.1.
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We are grateful to the Debian project for their input in this area.
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See L<perlsec/"Algorithmic Complexity Attacks"> for the original
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rationale behind this change.
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=head2 Threading
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Several memory leaks associated with variables shared between threads
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have been fixed.
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=head1 Modules and Pragmata
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=head2 Updated Modules And Pragmata
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The following modules and pragmata have been updated since Perl 5.8.1:
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=over 4
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=item Devel::PPPort
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=item Digest::MD5
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=item I18N::LangTags
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=item libnet
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=item MIME::Base64
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=item Pod::Perldoc
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=item strict
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Documentation improved
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=item Tie::Hash
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Documentation improved
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=item Time::HiRes
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=item Unicode::Collate
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=item Unicode::Normalize
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=item UNIVERSAL
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Documentation improved
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=back
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=head1 Selected Bug Fixes
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Some syntax errors involving unrecognized filetest operators are now handled
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correctly by the parser.
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=head1 Changed Internals
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Interpreter initialization is more complete when -DMULTIPLICITY is off.
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This should resolve problems with initializing and destroying the Perl
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interpreter more than once in a single process.
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=head1 Platform Specific Problems
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Dynamic linker flags have been tweaked for Solaris and OS X, which should
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solve problems seen while building some XS modules.
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Bugs in OS/2 sockets and tmpfile have been fixed.
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In OS X C<setreuid> and friends are troublesome - perl will now work
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around their problems as best possible.
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=head1 Future Directions
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Starting with 5.8.3 we intend to make more frequent maintenance releases,
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with a smaller number of changes in each. The intent is to propagate
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bug fixes out to stable releases more rapidly and make upgrading stable
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releases less of an upheaval. This should give end users more
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flexibility in their choice of upgrade timing, and allow them easier
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assessment of the impact of upgrades. The current plan is for code freezes
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as follows
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=over 4
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=item *
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5.8.3 23:59:59 GMT, Wednesday December 31st 2003
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=item *
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5.8.4 23:59:59 GMT, Wednesday March 31st 2004
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=item *
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5.8.5 23:59:59 GMT, Wednesday June 30th 2004
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=back
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with the release following soon after, when testing is complete.
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See L<perl581delta/"Future Directions"> for more soothsaying.
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=head1 Reporting Bugs
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If you find what you think is a bug, you might check the articles
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recently posted to the comp.lang.perl.misc newsgroup and the perl
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bug database at http://bugs.perl.org/. There may also be
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information at http://www.perl.com/, the Perl Home Page.
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If you believe you have an unreported bug, please run the B<perlbug>
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program included with your release. Be sure to trim your bug down
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to a tiny but sufficient test case. Your bug report, along with the
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output of C<perl -V>, will be sent off to perlbug@perl.org to be
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analysed by the Perl porting team. You can browse and search
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the Perl 5 bugs at http://bugs.perl.org/
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=head1 SEE ALSO
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The F<Changes> file for exhaustive details on what changed.
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The F<INSTALL> file for how to build Perl.
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The F<README> file for general stuff.
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The F<Artistic> and F<Copying> files for copyright information.
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=cut
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