267 lines
6.8 KiB
Plaintext
267 lines
6.8 KiB
Plaintext
=encoding utf8
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=head1 NAME
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perldelta - what is new for perl v5.32.1
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=head1 DESCRIPTION
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This document describes differences between the 5.32.0 release and the 5.32.1
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release.
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If you are upgrading from an earlier release such as 5.31.0, first read
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L<perl5320delta>, which describes differences between 5.31.0 and 5.32.0.
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=head1 Incompatible Changes
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There are no changes intentionally incompatible with Perl 5.32.0. If any
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exist, they are bugs, and we request that you submit a report. See
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L</Reporting Bugs> below.
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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<Data::Dumper> has been upgraded from version 2.174 to 2.174_01.
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A number of memory leaks have been fixed.
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=item *
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L<DynaLoader> has been upgraded from version 1.47 to 1.47_01.
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=item *
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L<Module::CoreList> has been upgraded from version 5.20200620 to 5.20210123.
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=item *
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L<Opcode> has been upgraded from version 1.47 to 1.48.
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A warning has been added about evaluating untrusted code with the perl
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interpreter.
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=item *
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L<Safe> has been upgraded from version 2.41 to 2.41_01.
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A warning has been added about evaluating untrusted code with the perl
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interpreter.
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=back
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=head1 Documentation
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=head2 New Documentation
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=head3 L<perlgov>
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Documentation of the newly formed rules of governance for Perl.
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=head3 L<perlsecpolicy>
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Documentation of how the Perl security team operates and how the team evaluates
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new security reports.
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=head2 Changes to Existing Documentation
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We have attempted to update the documentation to reflect the changes listed in
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this document. If you find any we have missed, open an issue at
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L<https://github.com/Perl/perl5/issues>.
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Additionally, the following selected changes have been made:
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=head3 L<perlop>
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=over 4
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=item *
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Document range op behaviour change.
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=back
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=head1 Diagnostics
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The following additions or changes have been made to diagnostic output,
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including warnings and fatal error messages. For the complete list of
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diagnostic messages, see L<perldiag>.
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=head2 Changes to Existing Diagnostics
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=over 4
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=item *
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L<\K not permitted in lookahead/lookbehind in regex; marked by <-- HERE in mE<sol>%sE<sol>|perldiag/"\K not permitted in lookahead/lookbehind in regex; marked by <-- HERE in m/%s/">
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This error was incorrectly produced in some cases involving nested lookarounds.
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This has been fixed.
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[L<GH #18123|https://github.com/Perl/perl5/issues/18123>]
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=back
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=head1 Configuration and Compilation
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=over 4
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=item *
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Newer 64-bit versions of the Intel C/C++ compiler are now recognized and have
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the correct flags set.
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=item *
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We now trap SIGBUS when F<Configure> checks for C<va_copy>.
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On several systems the attempt to determine if we need C<va_copy> or similar
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results in a SIGBUS instead of the expected SIGSEGV, which previously caused a
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core dump.
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[L<GH #18148|https://github.com/Perl/perl5/issues/18148>]
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=back
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=head1 Testing
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Tests were added and changed to reflect the other additions and changes in this
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release.
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=head1 Platform Support
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=head2 Platform-Specific Notes
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=over 4
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=item MacOS (Darwin)
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The hints file for darwin has been updated to handle future macOS versions
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beyond 10. Perl can now be built on macOS Big Sur.
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[L<GH #17946|https://github.com/Perl/perl5/issues/17946>,
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L<GH #18406|https://github.com/Perl/perl5/issues/18406>]
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=item Minix
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Build errors on Minix have been fixed.
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[L<GH #17908|https://github.com/Perl/perl5/issues/17908>]
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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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Some list assignments involving C<undef> on the left-hand side were
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over-optimized and produced incorrect results.
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[L<GH #16685|https://github.com/Perl/perl5/issues/16685>,
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L<GH #17816|https://github.com/Perl/perl5/issues/17816>]
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=item *
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Fixed a bug in which some regexps with recursive subpatterns matched
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incorrectly.
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[L<GH #18096|https://github.com/Perl/perl5/issues/18096>]
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=item *
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Fixed a deadlock that hung the build when Perl is compiled for debugging memory
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problems and has PERL_MEM_LOG enabled.
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[L<GH #18341|https://github.com/Perl/perl5/issues/18341>]
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=item *
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Fixed a crash in the use of chained comparison operators when run under "no
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warnings 'uninitialized'".
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[L<GH #17917|https://github.com/Perl/perl5/issues/17917>,
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L<GH #18380|https://github.com/Perl/perl5/issues/18380>]
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=item *
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Exceptions thrown from destructors during global destruction are no longer
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swallowed.
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[L<GH #18063|https://github.com/Perl/perl5/issues/18063>]
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=back
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=head1 Acknowledgements
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Perl 5.32.1 represents approximately 7 months of development since Perl 5.32.0
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and contains approximately 7,000 lines of changes across 80 files from 23
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authors.
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Excluding auto-generated files, documentation and release tools, there were
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approximately 1,300 lines of changes to 23 .pm, .t, .c and .h files.
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Perl continues to flourish into its fourth 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 5.32.1:
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Adam Hartley, Andy Dougherty, Dagfinn Ilmari Mannsåker, Dan Book, David
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Mitchell, Graham Knop, Graham Ollis, Hauke D, H.Merijn Brand, Hugo van der
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Sanden, John Lightsey, Karen Etheridge, Karl Williamson, Leon Timmermans, Max
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Maischein, Nicolas R., Ricardo Signes, Richard Leach, Sawyer X, Sevan Janiyan,
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Steve Hay, Tom Hukins, 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 perl bug database at
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L<https://github.com/Perl/perl5/issues>. There may also be information at
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L<http://www.perl.org/>, the Perl Home Page.
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If you believe you have an unreported bug, please open an issue at
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L<https://github.com/Perl/perl5/issues>. Be sure to trim your bug down to a
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tiny but sufficient test case.
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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 public issue tracker, then see
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L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
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report the issue.
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=head1 Give Thanks
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If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
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can do so by running the C<perlthanks> program:
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perlthanks
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This will send an email to the Perl 5 Porters list with your show of thanks.
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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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