1=encoding utf8 2 3=head1 NAME 4 5perl5124delta - what is new for perl v5.12.4 6 7=head1 DESCRIPTION 8 9This document describes differences between the 5.12.3 release and 10the 5.12.4 release. 11 12If you are upgrading from an earlier release such as 5.12.2, first read 13L<perl5123delta>, which describes differences between 5.12.2 14and 5.12.3. The major changes made in 5.12.0 are described in L<perl5120delta>. 15 16=head1 Incompatible Changes 17 18There are no changes intentionally incompatible with 5.12.3. If any 19exist, they are bugs and reports are welcome. 20 21=head1 Selected Bug Fixes 22 23When strict "refs" mode is off, C<%{...}> in rvalue context returns 24C<undef> if its argument is undefined. An optimisation introduced in Perl 255.12.0 to make C<keys %{...}> faster when used as a boolean did not take 26this into account, causing C<keys %{+undef}> (and C<keys %$foo> when 27C<$foo> is undefined) to be an error, which it should be so in strict 28mode only [perl #81750]. 29 30C<lc>, C<uc>, C<lcfirst>, and C<ucfirst> no longer return untainted strings 31when the argument is tainted. This has been broken since perl 5.8.9 32[perl #87336]. 33 34Fixed a case where it was possible that a freed buffer may have been read 35from when parsing a here document. 36 37=head1 Modules and Pragmata 38 39L<Module::CoreList> has been upgraded from version 2.43 to 2.50. 40 41=head1 Testing 42 43The F<cpan/CGI/t/http.t> test script has been fixed to work when the 44environment has HTTPS_* environment variables, such as HTTPS_PROXY. 45 46=head1 Documentation 47 48Updated the documentation for rand() in L<perlfunc> to note that it is not 49cryptographically secure. 50 51=head1 Platform Specific Notes 52 53=over 4 54 55=item Linux 56 57Support Ubuntu 11.04's new multi-arch library layout. 58 59=back 60 61=head1 Acknowledgements 62 63Perl 5.12.4 represents approximately 5 months of development since 64Perl 5.12.3 and contains approximately 200 lines of changes across 6511 files from 8 authors. 66 67Perl continues to flourish into its third decade thanks to a vibrant 68community of users and developers. The following people are known to 69have contributed the improvements that became Perl 5.12.4: 70 71Andy Dougherty, David Golden, David Leadbeater, Father Chrysostomos, 72Florian Ragwitz, Jesse Vincent, Leon Brocard, Zsbán Ambrus. 73 74=head1 Reporting Bugs 75 76If you find what you think is a bug, you might check the articles 77recently posted to the comp.lang.perl.misc newsgroup and the perl 78bug database at http://rt.perl.org/perlbug/ . There may also be 79information at http://www.perl.org/ , the Perl Home Page. 80 81If you believe you have an unreported bug, please run the B<perlbug> 82program included with your release. Be sure to trim your bug down 83to a tiny but sufficient test case. Your bug report, along with the 84output of C<perl -V>, will be sent off to perlbug@perl.org to be 85analysed by the Perl porting team. 86 87If the bug you are reporting has security implications, which make it 88inappropriate to send to a publicly archived mailing list, then please send 89it to perl5-security-report@perl.org. This points to a closed subscription 90unarchived mailing list, which includes all the core committers, who be able 91to help assess the impact of issues, figure out a resolution, and help 92co-ordinate the release of patches to mitigate or fix the problem across all 93platforms on which Perl is supported. Please only use this address for 94security issues in the Perl core, not for modules independently 95distributed on CPAN. 96 97=head1 SEE ALSO 98 99The F<Changes> file for an explanation of how to view exhaustive details 100on what changed. 101 102The F<INSTALL> file for how to build Perl. 103 104The F<README> file for general stuff. 105 106The F<Artistic> and F<Copying> files for copyright information. 107 108=cut 109