NAME

       perl5124delta - what is new for perl v5.12.4

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 perl5123delta, which describes
       differences between 5.12.2 and 5.12.3. The major changes made in 5.12.0 are described in perl5120delta.

Incompatible Changes

       There are no changes intentionally incompatible with 5.12.3. If any exist, they are bugs and reports are
       welcome.

Selected Bug Fixes

       When strict "refs" mode is off, "%{...}" in rvalue context returns "undef" if its argument is undefined.
       An optimisation introduced in Perl 5.12.0 to make "keys %{...}" faster when used as a boolean did not
       take this into account, causing "keys %{+undef}" (and "keys %$foo" when $foo is undefined) to be an
       error, which it should be so in strict mode only [perl #81750].

       "lc", "uc", "lcfirst", and "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.

Modules and Pragmata

       Module::CoreList has been upgraded from version 2.43 to 2.50.

Testing

       The cpan/CGI/t/http.t test script has been fixed to work when the environment has HTTPS_* environment
       variables, such as HTTPS_PROXY.

Documentation

       Updated the documentation for rand() in perlfunc to note that it is not cryptographically secure.

Platform Specific Notes

       Linux
           Support Ubuntu 11.04's new multi-arch library layout.

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.

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 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
       "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.

SEE ALSO

       The Changes file for an explanation of how to view exhaustive details on what changed.

       The INSTALL file for how to build Perl.

       The README file for general stuff.

       The Artistic and Copying files for copyright information.