man > perl5242delta(1)

PERL5242DELTA(1)                  Perl Programmers Reference Guide                  PERL5242DELTA(1)



NAME
       perl5242delta - what is new for perl v5.24.2

DESCRIPTION
       This document describes differences between the 5.24.1 release and the 5.24.2 release.

       If you are upgrading from an earlier release such as 5.24.0, first read perl5241delta, which
       describes differences between 5.24.0 and 5.24.1.

Security
   Improved handling of '.' in @INC in base.pm
       The handling of (the removal of) '.' in @INC in base has been improved.  This resolves some
       problematic behaviour in the approach taken in Perl 5.24.1, which is probably best described
       in the following two threads on the Perl 5 Porters mailing list:
       <http://www.nntp.perl.org/group/perl.perl5.porters/2016/08/msg238991.html>,
       <http://www.nntp.perl.org/group/perl.perl5.porters/2016/10/msg240297.html>.

   "Escaped" colons and relative paths in PATH
       On Unix systems, Perl treats any relative paths in the PATH environment variable as tainted
       when starting a new process.  Previously, it was allowing a backslash to escape a colon
       (unlike the OS), consequently allowing relative paths to be considered safe if the PATH was
       set to something like "/\:.".  The check has been fixed to treat "." as tainted in that
       example.

Modules and Pragmata
   Updated Modules and Pragmata
       •   base has been upgraded from version 2.23 to 2.23_01.

       •   Module::CoreList has been upgraded from version 5.20170114_24 to 5.20170715_24.

Selected Bug Fixes
       •   Fixed a crash with "s///l" where it thought it was dealing with UTF-8 when it wasn't.
           [GH #15543] <https://github.com/Perl/perl5/issues/15543>

Acknowledgements
       Perl 5.24.2 represents approximately 6 months of development since Perl 5.24.1 and contains
       approximately 2,500 lines of changes across 53 files from 18 authors.

       Excluding auto-generated files, documentation and release tools, there were approximately 960
       lines of changes to 17 .pm, .t, .c and .h files.

       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 5.24.2:

       Aaron Crane, Abigail, Aristotle Pagaltzis, Chris 'BinGOs' Williams, Dan Collins, David
       Mitchell, Eric Herman, Father Chrysostomos, James E Keenan, Karl Williamson, Lukas Mai, Renee
       Baecker, Ricardo Signes, Sawyer X, Stevan Little, Steve Hay, Tony Cook, Yves Orton.

       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 AUTHORS
       file in the Perl source distribution.

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 <https://rt.perl.org/> .  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 AT 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 see "SECURITY VULNERABILITY CONTACT INFORMATION" in
       perlsec for details of how to report the issue.

SEE ALSO
       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 v5.34.0                                 2026-06-23                             PERL5242DELTA(1)