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 [email protected] to be analysed by the Perl porting team.
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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