5 perl5321delta - what is new for perl v5.32.1
9 This document describes differences between the 5.32.0 release and the 5.32.1
12 If you are upgrading from an earlier release such as 5.30.0, first read
13 L<perl5320delta>, which describes differences between 5.30.0 and 5.32.0.
15 =head1 Incompatible Changes
17 There are no changes intentionally incompatible with Perl 5.32.0. If any
18 exist, they are bugs, and we request that you submit a report. See
19 L</Reporting Bugs> below.
21 =head1 Modules and Pragmata
23 =head2 Updated Modules and Pragmata
29 L<Data::Dumper> has been upgraded from version 2.174 to 2.174_01.
31 A number of memory leaks have been fixed.
35 L<DynaLoader> has been upgraded from version 1.47 to 1.47_01.
39 L<Module::CoreList> has been upgraded from version 5.20200620 to 5.20210123.
43 L<Opcode> has been upgraded from version 1.47 to 1.48.
45 A warning has been added about evaluating untrusted code with the perl
50 L<Safe> has been upgraded from version 2.41 to 2.41_01.
52 A warning has been added about evaluating untrusted code with the perl
59 =head2 New Documentation
63 Documentation of the newly formed rules of governance for Perl.
65 =head3 L<perlsecpolicy>
67 Documentation of how the Perl security team operates and how the team evaluates
70 =head2 Changes to Existing Documentation
72 We have attempted to update the documentation to reflect the changes listed in
73 this document. If you find any we have missed, open an issue at
74 L<https://github.com/Perl/perl5/issues>.
76 Additionally, the following selected changes have been made:
84 Document range op behaviour change.
90 The following additions or changes have been made to diagnostic output,
91 including warnings and fatal error messages. For the complete list of
92 diagnostic messages, see L<perldiag>.
94 =head2 Changes to Existing Diagnostics
100 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/">
102 This error was incorrectly produced in some cases involving nested lookarounds.
105 [L<GH #18123|https://github.com/Perl/perl5/issues/18123>]
109 =head1 Configuration and Compilation
115 Newer 64-bit versions of the Intel C/C++ compiler are now recognized and have
116 the correct flags set.
120 We now trap SIGBUS when F<Configure> checks for C<va_copy>.
122 On several systems the attempt to determine if we need C<va_copy> or similar
123 results in a SIGBUS instead of the expected SIGSEGV, which previously caused a
126 [L<GH #18148|https://github.com/Perl/perl5/issues/18148>]
132 Tests were added and changed to reflect the other additions and changes in this
135 =head1 Platform Support
137 =head2 Platform-Specific Notes
143 The hints file for darwin has been updated to handle future macOS versions
144 beyond 10. Perl can now be built on macOS Big Sur.
146 [L<GH #17946|https://github.com/Perl/perl5/issues/17946>,
147 L<GH #18406|https://github.com/Perl/perl5/issues/18406>]
151 Build errors on Minix have been fixed.
153 [L<GH #17908|https://github.com/Perl/perl5/issues/17908>]
157 =head1 Selected Bug Fixes
163 Some list assignments involving C<undef> on the left-hand side were
164 over-optimized and produced incorrect results.
166 [L<GH #16685|https://github.com/Perl/perl5/issues/16685>,
167 L<GH #17816|https://github.com/Perl/perl5/issues/17816>]
171 Fixed a bug in which some regexps with recursive subpatterns matched
174 [L<GH #18096|https://github.com/Perl/perl5/issues/18096>]
178 Fixed a deadlock that hung the build when Perl is compiled for debugging memory
179 problems and has PERL_MEM_LOG enabled.
181 [L<GH #18341|https://github.com/Perl/perl5/issues/18341>]
185 Fixed a crash in the use of chained comparison operators when run under "no
186 warnings 'uninitialized'".
188 [L<GH #17917|https://github.com/Perl/perl5/issues/17917>,
189 L<GH #18380|https://github.com/Perl/perl5/issues/18380>]
193 Exceptions thrown from destructors during global destruction are no longer
196 [L<GH #18063|https://github.com/Perl/perl5/issues/18063>]
200 =head1 Acknowledgements
202 Perl 5.32.1 represents approximately 7 months of development since Perl 5.32.0
203 and contains approximately 7,000 lines of changes across 80 files from 23
206 Excluding auto-generated files, documentation and release tools, there were
207 approximately 1,300 lines of changes to 23 .pm, .t, .c and .h files.
209 Perl continues to flourish into its fourth decade thanks to a vibrant community
210 of users and developers. The following people are known to have contributed
211 the improvements that became Perl 5.32.1:
213 Adam Hartley, Andy Dougherty, Dagfinn Ilmari Mannsåker, Dan Book, David
214 Mitchell, Graham Knop, Graham Ollis, Hauke D, H.Merijn Brand, Hugo van der
215 Sanden, John Lightsey, Karen Etheridge, Karl Williamson, Leon Timmermans, Max
216 Maischein, Nicolas R., Ricardo Signes, Richard Leach, Sawyer X, Sevan Janiyan,
217 Steve Hay, Tom Hukins, Tony Cook.
219 The list above is almost certainly incomplete as it is automatically generated
220 from version control history. In particular, it does not include the names of
221 the (very much appreciated) contributors who reported issues to the Perl bug
224 Many of the changes included in this version originated in the CPAN modules
225 included in Perl's core. We're grateful to the entire CPAN community for
226 helping Perl to flourish.
228 For a more complete list of all of Perl's historical contributors, please see
229 the F<AUTHORS> file in the Perl source distribution.
231 =head1 Reporting Bugs
233 If you find what you think is a bug, you might check the perl bug database at
234 L<https://github.com/Perl/perl5/issues>. There may also be information at
235 L<http://www.perl.org/>, the Perl Home Page.
237 If you believe you have an unreported bug, please open an issue at
238 L<https://github.com/Perl/perl5/issues>. Be sure to trim your bug down to a
239 tiny but sufficient test case.
241 If the bug you are reporting has security implications which make it
242 inappropriate to send to a public issue tracker, then see
243 L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
248 If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
249 can do so by running the C<perlthanks> program:
253 This will send an email to the Perl 5 Porters list with your show of thanks.
257 The F<Changes> file for an explanation of how to view exhaustive details on
260 The F<INSTALL> file for how to build Perl.
262 The F<README> file for general stuff.
264 The F<Artistic> and F<Copying> files for copyright information.