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+=encoding utf8
+
+=head1 NAME
+
+perl5124delta - what is new for perl v5.12.4
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.12.3 release and
+the 5.12.4 release.
+
+If you are upgrading from an earlier release such as 5.12.2, first read
+L<perl5123delta>, which describes differences between 5.12.2
+and 5.12.3. The major changes made in 5.12.0 are described in L<perl5120delta>.
+
+=head1 Incompatible Changes
+
+There are no changes intentionally incompatible with 5.12.3. If any
+exist, they are bugs and reports are welcome.
+
+=head1 Selected Bug Fixes
+
+When strict "refs" mode is off, C<%{...}> in rvalue context returns
+C<undef> if its argument is undefined. An optimisation introduced in Perl
+5.12.0 to make C<keys %{...}> faster when used as a boolean did not take
+this into account, causing C<keys %{+undef}> (and C<keys %$foo> when
+C<$foo> is undefined) to be an error, which it should be so in strict
+mode only [perl #81750].
+
+C<lc>, C<uc>, C<lcfirst>, and C<ucfirst> no longer return untainted strings
+when the argument is tainted. This has been broken since perl 5.8.9
+[perl #87336].
+
+Fixed a case where it was possible that a freed buffer may have been read
+from when parsing a here document.
+
+=head1 Modules and Pragmata
+
+L<Module::CoreList> has been upgraded from version 2.43 to 2.50.
+
+=head1 Testing
+
+The F<cpan/CGI/t/http.t> test script has been fixed to work when the
+environment has HTTPS_* environment variables, such as HTTPS_PROXY.
+
+=head1 Documentation
+
+Updated the documentation for rand() in L<perlfunc> to note that it is not
+cryptographically secure.
+
+=head1 Platform Specific Notes
+
+=over 4
+
+=item Linux
+
+Support Ubuntu 11.04's new multi-arch library layout.
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.12.4 represents approximately 5 months of development since
+Perl 5.12.3 and contains approximately 200 lines of changes across
+11 files from 8 authors.
+
+Perl continues to flourish into its third decade thanks to a vibrant
+community of users and developers. The following people are known to
+have contributed the improvements that became Perl 5.12.4:
+
+Andy Dougherty, David Golden, David Leadbeater, Father Chrysostomos,
+Florian Ragwitz, Jesse Vincent, Leon Brocard, Zsbán Ambrus.
+
+=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://rt.perl.org/perlbug/ . 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.
+
+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 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 an explanation of how to view 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