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=encoding utf8 | |
=head1 NAME | |
perl5281delta - what is new for perl v5.28.1 | |
=head1 DESCRIPTION | |
This document describes differences between the 5.28.0 release and the 5.28.1 | |
release. | |
If you are upgrading from an earlier release such as 5.26.0, first read | |
L<perl5280delta>, which describes differences between 5.26.0 and 5.28.0. | |
=head1 Security | |
=head2 [CVE-2018-18311] Integer overflow leading to buffer overflow and segmentation fault | |
Integer arithmetic in C<Perl_my_setenv()> could wrap when the combined length | |
of the environment variable name and value exceeded around 0x7fffffff. This | |
could lead to writing beyond the end of an allocated buffer with attacker | |
supplied data. | |
L<[GH #16560]|https://github.com/Perl/perl5/issues/16560> | |
=head2 [CVE-2018-18312] Heap-buffer-overflow write in S_regatom (regcomp.c) | |
A crafted regular expression could cause heap-buffer-overflow write during | |
compilation, potentially allowing arbitrary code execution. | |
L<[GH #16649]|https://github.com/Perl/perl5/issues/16649> | |
=head1 Incompatible Changes | |
There are no changes intentionally incompatible with 5.28.0. If any exist, | |
they are bugs, and we request that you submit a report. See | |
L</Reporting Bugs> below. | |
=head1 Modules and Pragmata | |
=head2 Updated Modules and Pragmata | |
=over 4 | |
=item * | |
L<Module::CoreList> has been upgraded from version 5.20180622 to 5.20181129_28. | |
=back | |
=head1 Selected Bug Fixes | |
=over 4 | |
=item * | |
Perl 5.28 introduced an C<index()> optimization when comparing to -1 (or | |
indirectly, e.g. >= 0). When this optimization was triggered inside a C<when> | |
clause it caused a warning ("Argument %s isn't numeric in smart match"). This | |
has now been fixed. | |
L<[GH #16626]|https://github.com/Perl/perl5/issues/16626> | |
=item * | |
Matching of decimal digits in script runs, introduced in Perl 5.28, had a bug | |
that led to C<"1\N{THAI DIGIT FIVE}"> matching C</^(*sr:\d+)$/> when it should | |
not. This has now been fixed. | |
=item * | |
The new in-place editing code no longer leaks directory handles. | |
L<[GH #16602]|https://github.com/Perl/perl5/issues/16602> | |
=back | |
=head1 Acknowledgements | |
Perl 5.28.1 represents approximately 5 months of development since Perl 5.28.0 | |
and contains approximately 6,100 lines of changes across 44 files from 12 | |
authors. | |
Excluding auto-generated files, documentation and release tools, there were | |
approximately 700 lines of changes to 12 .pm, .t, .c and .h files. | |
Perl continues to flourish into its fourth decade thanks to a vibrant community | |
of users and developers. The following people are known to have contributed | |
the improvements that became Perl 5.28.1: | |
Aaron Crane, Abigail, Chris 'BinGOs' Williams, Dagfinn Ilmari Mannsåker, David | |
Mitchell, James E Keenan, John SJ Anderson, Karen Etheridge, Karl Williamson, | |
Sawyer X, Steve Hay, Tony Cook. | |
The list above is almost certainly incomplete as it is automatically generated | |
from version control history. In particular, it does not include the names of | |
the (very much appreciated) contributors who reported issues to the Perl bug | |
tracker. | |
Many of the changes included in this version originated in the CPAN modules | |
included in Perl's core. We're grateful to the entire CPAN community for | |
helping Perl to flourish. | |
For a more complete list of all of Perl's historical contributors, please see | |
the F<AUTHORS> file in the Perl source distribution. | |
=head1 Reporting Bugs | |
If you find what you think is a bug, you might check the perl bug database | |
at L<https://rt.perl.org/> . There may also be information at | |
L<http://www.perl.org/> , the Perl Home Page. | |
If you believe you have an unreported bug, please run the L<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 C<perl -V>, | |
will be sent off to [email protected] 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 see | |
L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> | |
for details of how to report the issue. | |
=head1 Give Thanks | |
If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, | |
you can do so by running the C<perlthanks> program: | |
perlthanks | |
This will send an email to the Perl 5 Porters list with your show of thanks. | |
=head1 SEE ALSO | |
The F<Changes> file for an explanation of how to view exhaustive details on | |
what changed. | |
The F<INSTALL> file for how to build Perl. | |
The F<README> file for general stuff. | |
The F<Artistic> and F<Copying> files for copyright information. | |
=cut | |