|PERL5124DELTA(1)||Perl Programmers Reference Guide||PERL5124DELTA(1)|
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.
"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.
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.
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 email@example.com 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 firstname.lastname@example.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.
The INSTALL file for how to build Perl.
The README file for general stuff.
The Artistic and Copying files for copyright information.