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

       perl5124delta - what is new for perl v5.12.4

       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.

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

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

Platform Specific Notes
	   Support Ubuntu 11.04's new multi-arch library layout.

       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 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

       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 v5.16.3				    2013-02-26				 PERL5124DELTA(1)
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