PERL5124DELTA(1)                                Perl Programmers Reference Guide                                PERL5124DELTA(1)



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, Zsban
       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 perlbugATperl.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-reportATperl.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.



perl v5.12.4                                               2011-06-11                                           PERL5124DELTA(1)