126 lines
4.4 KiB
Plaintext
126 lines
4.4 KiB
Plaintext
=encoding utf8
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=head1 NAME
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perl5224delta - what is new for perl v5.22.4
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=head1 DESCRIPTION
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This document describes differences between the 5.22.3 release and the 5.22.4
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release.
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If you are upgrading from an earlier release such as 5.22.2, first read
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L<perl5223delta>, which describes differences between 5.22.2 and 5.22.3.
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=head1 Security
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=head2 Improved handling of '.' in @INC in base.pm
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The handling of (the removal of) C<'.'> in C<@INC> in L<base> has been
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improved. This resolves some problematic behaviour in the approach taken in
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Perl 5.22.3, which is probably best described in the following two threads on
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the Perl 5 Porters mailing list:
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L<http://www.nntp.perl.org/group/perl.perl5.porters/2016/08/msg238991.html>,
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L<http://www.nntp.perl.org/group/perl.perl5.porters/2016/10/msg240297.html>.
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=head2 "Escaped" colons and relative paths in PATH
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On Unix systems, Perl treats any relative paths in the PATH environment
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variable as tainted when starting a new process. Previously, it was allowing a
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backslash to escape a colon (unlike the OS), consequently allowing relative
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paths to be considered safe if the PATH was set to something like C</\:.>. The
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check has been fixed to treat C<.> as tainted in that example.
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=head1 Modules and Pragmata
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=head2 Updated Modules and Pragmata
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=over 4
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=item *
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L<base> has been upgraded from version 2.22 to 2.22_01.
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=item *
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L<Module::CoreList> has been upgraded from version 5.20170114_22 to 5.20170715_22.
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=back
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=head1 Selected Bug Fixes
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=over 4
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=item *
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Fixed a crash with C<s///l> where it thought it was dealing with UTF-8 when it
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wasn't.
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L<[perl #129038]|https://rt.perl.org/Ticket/Display.html?id=129038>
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=back
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=head1 Acknowledgements
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Perl 5.22.4 represents approximately 6 months of development since Perl 5.22.3
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and contains approximately 2,200 lines of changes across 52 files from 16
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authors.
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Excluding auto-generated files, documentation and release tools, there were
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approximately 970 lines of changes to 18 .pm, .t, .c and .h files.
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Perl continues to flourish into its third decade thanks to a vibrant community
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of users and developers. The following people are known to have contributed
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the improvements that became Perl 5.22.4:
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Aaron Crane, Abigail, Aristotle Pagaltzis, Chris 'BinGOs' Williams, David
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Mitchell, Eric Herman, Father Chrysostomos, James E Keenan, Karl Williamson,
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Lukas Mai, Renee Baecker, Ricardo Signes, Sawyer X, Stevan Little, Steve Hay,
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Tony Cook.
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The list above is almost certainly incomplete as it is automatically generated
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from version control history. In particular, it does not include the names of
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the (very much appreciated) contributors who reported issues to the Perl bug
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tracker.
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Many of the changes included in this version originated in the CPAN modules
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included in Perl's core. We're grateful to the entire CPAN community for
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helping Perl to flourish.
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For a more complete list of all of Perl's historical contributors, please see
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the F<AUTHORS> file in the Perl source distribution.
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=head1 Reporting Bugs
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If you find what you think is a bug, you might check the articles recently
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posted to the comp.lang.perl.misc newsgroup and the perl bug database at
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https://rt.perl.org/ . There may also be information at
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http://www.perl.org/ , the Perl Home Page.
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If you believe you have an unreported bug, please run the L<perlbug> program
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included with your release. Be sure to trim your bug down to a tiny but
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sufficient test case. Your bug report, along with the output of C<perl -V>,
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will be sent off to perlbug@perl.org to be analysed by the Perl porting team.
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If the bug you are reporting has security implications, which make it
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inappropriate to send to a publicly archived mailing list, then please send it
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to perl5-security-report@perl.org. This points to a closed subscription
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unarchived mailing list, which includes all the core committers, who will be
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able to help assess the impact of issues, figure out a resolution, and help
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co-ordinate the release of patches to mitigate or fix the problem across all
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platforms on which Perl is supported. Please only use this address for
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security issues in the Perl core, not for modules independently distributed on
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CPAN.
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=head1 SEE ALSO
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The F<Changes> file for an explanation of how to view exhaustive details on
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what changed.
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The F<INSTALL> file for how to build Perl.
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The F<README> file for general stuff.
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The F<Artistic> and F<Copying> files for copyright information.
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=cut
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