5 perl5301delta - what is new for perl v5.30.1
9 This document describes differences between the 5.30.0 release and the 5.30.1
12 If you are upgrading from an earlier release such as 5.28.0, first read
13 L<perl5300delta>, which describes differences between 5.28.0 and 5.30.0.
15 =head1 Incompatible Changes
17 There are no changes intentionally incompatible with 5.30.1. If any exist,
18 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<Module::CoreList> has been upgraded from version 5.20190522 to 5.20191110.
35 =head2 Changes to Existing Documentation
37 We have attempted to update the documentation to reflect the changes listed in
38 this document. If you find any we have missed, send email to
39 L<perlbug@perl.org|mailto:perlbug@perl.org>.
41 Additionally, documentation has been updated to reference GitHub as the new
42 canonical repository and to describe the new GitHub pull request workflow.
44 =head1 Configuration and Compilation
50 The C<ECHO> macro is now defined. This is used in a C<dtrace> rule that was
51 originally changed for FreeBSD, and the FreeBSD make apparently predefines it.
52 The Solaris make does not predefine C<ECHO> which broke this rule on Solaris.
53 L<[perl #17057]|https://github.com/perl/perl5/issues/17057>
59 Tests were added and changed to reflect the other additions and changes in this
62 =head1 Platform Support
64 =head2 Platform-Specific Notes
70 The locale tests could crash on Win32 due to a Windows bug, and separately due
71 to the CRT throwing an exception if the locale name wasn't validly encoded in
72 the current code page.
74 For the second we now decode the locale name ourselves, and always decode it as
77 L<[perl #16922]|https://github.com/perl/perl5/issues/16922>
81 =head1 Selected Bug Fixes
87 Setting C<$)> now properly sets supplementary group ids, if you have the
89 L<[perl #17031]|https://github.com/perl/perl5/issues/17031>
93 C<readline @foo> now evaluates C<@foo> in scalar context. Previously, it would
94 be evaluated in list context, and since readline() pops only one argument from
95 the stack, the stack could underflow, or be left with unexpected values on it.
96 L<[perl #16929]|https://github.com/perl/perl5/issues/16929>
100 sv_gets() now recovers better if the target SV is modified by a signal handler.
101 L<[perl #16960]|https://github.com/perl/perl5/issues/16960>
105 Matching a non-C<SVf_UTF8> string against a regular expression containing
106 Unicode literals could leak an SV on each match attempt.
107 L<[perl #17140]|https://github.com/perl/perl5/issues/17140>
111 C<< sprintf("%.*a", -10000, $x) >> would cause a buffer overflow due to
112 mishandling of the negative precision value.
113 L<[perl #16942]|https://github.com/perl/perl5/issues/16942>
117 C<scalar()> on a reference could cause an erroneous assertion failure during
119 L<[perl #16969]|https://github.com/perl/perl5/issues/16969>
123 =head1 Acknowledgements
125 Perl 5.30.1 represents approximately 6 months of development since Perl 5.30.0
126 and contains approximately 4,700 lines of changes across 67 files from 14
129 Excluding auto-generated files, documentation and release tools, there were
130 approximately 910 lines of changes to 20 .pm, .t, .c and .h files.
132 Perl continues to flourish into its fourth decade thanks to a vibrant community
133 of users and developers. The following people are known to have contributed
134 the improvements that became Perl 5.30.1:
136 Chris 'BinGOs' Williams, Dan Book, David Mitchell, Hugo van der Sanden, James E
137 Keenan, Karen Etheridge, Karl Williamson, Manuel Mausz, Max Maischein, Nicolas
138 R., Sawyer X, Steve Hay, Tom Hukins, Tony Cook.
140 The list above is almost certainly incomplete as it is automatically generated
141 from version control history. In particular, it does not include the names of
142 the (very much appreciated) contributors who reported issues to the Perl bug
145 Many of the changes included in this version originated in the CPAN modules
146 included in Perl's core. We're grateful to the entire CPAN community for
147 helping Perl to flourish.
149 For a more complete list of all of Perl's historical contributors, please see
150 the F<AUTHORS> file in the Perl source distribution.
152 =head1 Reporting Bugs
154 If you find what you think is a bug, you might check the perl bug database at
155 L<https://rt.perl.org/>. There may also be information at
156 L<http://www.perl.org/>, the Perl Home Page.
158 If you believe you have an unreported bug, please run the L<perlbug> program
159 included with your release. Be sure to trim your bug down to a tiny but
160 sufficient test case. Your bug report, along with the output of C<perl -V>,
161 will be sent off to perlbug@perl.org to be analysed by the Perl porting team.
163 If the bug you are reporting has security implications which make it
164 inappropriate to send to a publicly archived mailing list, then see
165 L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
170 If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
171 can do so by running the C<perlthanks> program:
175 This will send an email to the Perl 5 Porters list with your show of thanks.
179 The F<Changes> file for an explanation of how to view exhaustive details on
182 The F<INSTALL> file for how to build Perl.
184 The F<README> file for general stuff.
186 The F<Artistic> and F<Copying> files for copyright information.