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PERL5321DELTA(1pm)     Perl Programmers Reference Guide     PERL5321DELTA(1pm)


       perl5321delta - what is new for perl v5.32.1


       This document describes differences between the 5.32.0 release and the
       5.32.1 release.

       If you are upgrading from an earlier release such as 5.30.0, first read
       perl5320delta, which describes differences between 5.30.0 and 5.32.0.

Incompatible Changes

       There are no changes intentionally incompatible with Perl 5.32.0.  If
       any exist, they are bugs, and we request that you submit a report.  See
       "Reporting Bugs" below.

Modules and Pragmata

   Updated Modules and Pragmata
       o   Data::Dumper has been upgraded from version 2.174 to 2.174_01.

           A number of memory leaks have been fixed.

       o   DynaLoader has been upgraded from version 1.47 to 1.47_01.

       o   Module::CoreList has been upgraded from version 5.20200620 to

       o   Opcode has been upgraded from version 1.47 to 1.48.

           A warning has been added about evaluating untrusted code with the
           perl interpreter.

       o   Safe has been upgraded from version 2.41 to 2.41_01.

           A warning has been added about evaluating untrusted code with the
           perl interpreter.


   New Documentation

       Documentation of the newly formed rules of governance for Perl.


       Documentation of how the Perl security team operates and how the team
       evaluates new security reports.

   Changes to Existing Documentation
       We have attempted to update the documentation to reflect the changes
       listed in this document.  If you find any we have missed, open an issue
       at <>.

       Additionally, the following selected changes have been made:


       o   Document range op behaviour change.


       The following additions or changes have been made to diagnostic output,
       including warnings and fatal error messages.  For the complete list of
       diagnostic messages, see perldiag.

   Changes to Existing Diagnostics
       o   \K not permitted in lookahead/lookbehind in regex; marked by <--
           HERE in m/%s/

           This error was incorrectly produced in some cases involving nested
           lookarounds.  This has been fixed.

           [GH #18123 <>]

Configuration and Compilation

       o   Newer 64-bit versions of the Intel C/C++ compiler are now
           recognized and have the correct flags set.

       o   We now trap SIGBUS when Configure checks for "va_copy".

           On several systems the attempt to determine if we need "va_copy" or
           similar results in a SIGBUS instead of the expected SIGSEGV, which
           previously caused a core dump.

           [GH #18148 <>]


       Tests were added and changed to reflect the other additions and changes
       in this release.

Platform Support

   Platform-Specific Notes
       MacOS (Darwin)
           The hints file for darwin has been updated to handle future macOS
           versions beyond 10.  Perl can now be built on macOS Big Sur.

           [GH #17946 <>, GH #18406

           Build errors on Minix have been fixed.

           [GH #17908 <>]

Selected Bug Fixes

       o   Some list assignments involving "undef" on the left-hand side were
           over-optimized and produced incorrect results.

           [GH #16685 <>, GH #17816

       o   Fixed a bug in which some regexps with recursive subpatterns
           matched incorrectly.

           [GH #18096 <>]

       o   Fixed a deadlock that hung the build when Perl is compiled for
           debugging memory problems and has PERL_MEM_LOG enabled.

           [GH #18341 <>]

       o   Fixed a crash in the use of chained comparison operators when run
           under "no warnings 'uninitialized'".

           [GH #17917 <>, GH #18380

       o   Exceptions thrown from destructors during global destruction are no
           longer swallowed.

           [GH #18063 <>]


       Perl 5.32.1 represents approximately 7 months of development since Perl
       5.32.0 and contains approximately 7,000 lines of changes across 80
       files from 23 authors.

       Excluding auto-generated files, documentation and release tools, there
       were approximately 1,300 lines of changes to 23 .pm, .t, .c and .h

       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 5.32.1:

       Adam Hartley, Andy Dougherty, Dagfinn Ilmari Mannsaaker, Dan Book,
       David Mitchell, Graham Knop, Graham Ollis, Hauke D, H.Merijn Brand,
       Hugo van der Sanden, John Lightsey, Karen Etheridge, Karl Williamson,
       Leon Timmermans, Max Maischein, Nicolas R., Ricardo Signes, Richard
       Leach, Sawyer X, Sevan Janiyan, Steve Hay, Tom Hukins, 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 AUTHORS file in the Perl source distribution.

Reporting Bugs

       If you find what you think is a bug, you might check the perl bug
       database at <>.  There may also be
       information at <>, the Perl Home Page.

       If you believe you have an unreported bug, please open an issue at
       <>.  Be sure to trim your bug down
       to a tiny but sufficient test case.

       If the bug you are reporting has security implications which make it
       inappropriate to send to a public issue tracker, then see "SECURITY
       VULNERABILITY CONTACT INFORMATION" in perlsec for details of how to
       report the issue.

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 "perlthanks" program:


       This will send an email to the Perl 5 Porters list with your show of


       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                      2021-05-04                PERL5321DELTA(1pm)

perl 5.34.0 - Generated Sat Mar 5 05:35:14 CST 2022
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