PERL5321DELTA(1) Perl Programmers Reference Guide PERL5321DELTA(1)
NAME
perl5321delta - what is new for perl v5.32.1
DESCRIPTION
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
• Data::Dumper has been upgraded from version 2.174 to 2.174_01.
A number of memory leaks have been fixed.
• DynaLoader has been upgraded from version 1.47 to 1.47_01.
• Module::CoreList has been upgraded from version 5.20200620 to
5.20210123.
• Opcode has been upgraded from version 1.47 to 1.48.
A warning has been added about evaluating untrusted code with the
perl interpreter.
• 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.
Documentation
New Documentation
perlgov
Documentation of the newly formed rules of governance for Perl.
perlsecpolicy
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 <https://github.com/Perl/perl5/issues>.
Additionally, the following selected changes have been made:
perlop
• Document range op behaviour change.
Diagnostics
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
• \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 <https://github.com/Perl/perl5/issues/18123>]
Configuration and Compilation
• Newer 64-bit versions of the Intel C/C++ compiler are now recognized
and have the correct flags set.
• 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 <https://github.com/Perl/perl5/issues/18148>]
Testing
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 <https://github.com/Perl/perl5/issues/17946>, GH #18406
<https://github.com/Perl/perl5/issues/18406>]
Minix
Build errors on Minix have been fixed.
[GH #17908 <https://github.com/Perl/perl5/issues/17908>]
Selected Bug Fixes
• Some list assignments involving "undef" on the left-hand side were
over-optimized and produced incorrect results.
[GH #16685 <https://github.com/Perl/perl5/issues/16685>, GH #17816
<https://github.com/Perl/perl5/issues/17816>]
• Fixed a bug in which some regexps with recursive subpatterns matched
incorrectly.
[GH #18096 <https://github.com/Perl/perl5/issues/18096>]
• Fixed a deadlock that hung the build when Perl is compiled for
debugging memory problems and has PERL_MEM_LOG enabled.
[GH #18341 <https://github.com/Perl/perl5/issues/18341>]
• Fixed a crash in the use of chained comparison operators when run
under "no warnings 'uninitialized'".
[GH #17917 <https://github.com/Perl/perl5/issues/17917>, GH #18380
<https://github.com/Perl/perl5/issues/18380>]
• Exceptions thrown from destructors during global destruction are no
longer swallowed.
[GH #18063 <https://github.com/Perl/perl5/issues/18063>]
Acknowledgements
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
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 5.32.1:
Adam Hartley, Andy Dougherty, Dagfinn Ilmari Mannsåker, 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 <https://github.com/Perl/perl5/issues>. There may also be
information at <http://www.perl.org/>, the Perl Home Page.
If you believe you have an unreported bug, please open an issue at
<https://github.com/Perl/perl5/issues>. 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:
perlthanks
This will send an email to the Perl 5 Porters list with your show of
thanks.
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.
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