NAME

       perl5301delta - what is new for perl v5.30.1

DESCRIPTION

       This document describes differences between the 5.30.0 release and the 5.30.1 release.

       If you are upgrading from an earlier release such as 5.28.0, first read perl5300delta,
       which describes differences between 5.28.0 and 5.30.0.

Incompatible Changes

       There are no changes intentionally incompatible with 5.30.1.  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
       •   Module::CoreList has been upgraded from version 5.20190522 to 5.20191110.

Documentation

   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, send email to perlbug@perl.org
       <mailto:perlbug@perl.org>.

       Additionally, documentation has been updated to reference GitHub as the new canonical
       repository and to describe the new GitHub pull request workflow.

Configuration and Compilation

       •   The "ECHO" macro is now defined.  This is used in a "dtrace" rule that was originally
           changed for FreeBSD, and the FreeBSD make apparently predefines it.  The Solaris make
           does not predefine "ECHO" which broke this rule on Solaris.  [perl #17057]
           <https://github.com/perl/perl5/issues/17057>

Testing

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

Platform Support

   Platform-Specific Notes
       Win32
           The locale tests could crash on Win32 due to a Windows bug, and separately due to the
           CRT throwing an exception if the locale name wasn't validly encoded in the current
           code page.

           For the second we now decode the locale name ourselves, and always decode it as UTF-8.

           [perl #16922] <https://github.com/perl/perl5/issues/16922>

Selected Bug Fixes

       •   Setting $) now properly sets supplementary group ids, if you have the necessary
           privileges.  [perl #17031] <https://github.com/perl/perl5/issues/17031>

       •   "readline @foo" now evaluates @foo in scalar context.  Previously, it would be
           evaluated in list context, and since readline() pops only one argument from the stack,
           the stack could underflow, or be left with unexpected values on it.  [perl #16929]
           <https://github.com/perl/perl5/issues/16929>

       •   sv_gets() now recovers better if the target SV is modified by a signal handler.  [perl
           #16960] <https://github.com/perl/perl5/issues/16960>

       •   Matching a non-"SVf_UTF8" string against a regular expression containing Unicode
           literals could leak an SV on each match attempt.  [perl #17140]
           <https://github.com/perl/perl5/issues/17140>

       •   "sprintf("%.*a", -10000, $x)" would cause a buffer overflow due to mishandling of the
           negative precision value.  [perl #16942] <https://github.com/perl/perl5/issues/16942>

       •   "scalar()" on a reference could cause an erroneous assertion failure during
           compilation.  [perl #16969] <https://github.com/perl/perl5/issues/16969>

Acknowledgements

       Perl 5.30.1 represents approximately 6 months of development since Perl 5.30.0 and
       contains approximately 4,700 lines of changes across 67 files from 14 authors.

       Excluding auto-generated files, documentation and release tools, there were approximately
       910 lines of changes to 20 .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 5.30.1:

       Chris 'BinGOs' Williams, Dan Book, David Mitchell, Hugo van der Sanden, James E Keenan,
       Karen Etheridge, Karl Williamson, Manuel Mausz, Max Maischein, Nicolas R., Sawyer X, 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://rt.perl.org/>.  There may also be information at <http://www.perl.org/>, the Perl
       Home Page.

       If you believe you have an unreported bug, please run the perlbug program included with
       your release.  Be sure to trim your bug down to a tiny but sufficient test case.  Your bug
       report, along with the output of "perl -V", will be sent off to perlbug@perl.org to be
       analysed by the Perl porting team.

       If the bug you are reporting has security implications which make it inappropriate to send
       to a publicly archived mailing list, 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.