View on
MetaCPAN is shutting down
For details read Perl NOC. After June 25th this page will redirect to
Aaron Crane > perl-5.19.10 > perldelta


Annotate this POD


Source   Latest Release: perl-5.28.0


perldelta - what is new for perl v5.19.10


This document describes differences between the 5.19.9 release and the 5.19.10 release.

If you are upgrading from an earlier release such as 5.19.8, first read perl5199delta, which describes differences between 5.19.8 and 5.19.9.

Deprecations ^

Discouraged features

Performance Enhancements ^

Modules and Pragmata ^

Updated Modules and Pragmata

Documentation ^

Changes to Existing Documentation

Diagnostics ^

The following 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

Configuration and Compilation ^

Testing ^

Platform Support ^

Platform-Specific Notes


The hints file now looks for libgdbm_compat only if libgdbm itself is also wanted. The former is never useful without the latter, and in some circumstances, including it could actually prevent building.

Mac OS

The build system now honours an ld setting supplied by the user running Configure.


Killing a process tree with "kill" in perlfunc and a negative signal, was broken starting in 5.18.0. In this bug, kill always returned 0 for a negative signal even for valid PIDs, and no processes were terminated. This has been fixed [perl #121230].

Internal Changes ^

Selected Bug Fixes ^

Acknowledgements ^

Perl 5.19.10 represents approximately 4 weeks of development since Perl 5.19.9 and contains approximately 13,000 lines of changes across 330 files from 20 authors.

Excluding auto-generated files, documentation and release tools, there were approximately 8,800 lines of changes to 220 .pm, .t, .c and .h files.

Perl continues to flourish into its third decade thanks to a vibrant community of users and developers. The following people are known to have contributed the improvements that became Perl 5.19.10:

Aaron Crane, Andy Dougherty, Aristotle Pagaltzis, Chris 'BinGOs' Williams, Craig A. Berry, Daniel Dragan, David Mitchell, Father Chrysostomos, H.Merijn Brand, Jerry D. Hedden, Karl Williamson, Matthew Horsfall, Nicholas Clark, Paul Johnson, Peter Rabbitson, Ricardo Signes, Steffen Müller, Steve Hay, Tony Cook, Yves Orton.

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 articles recently posted to the comp.lang.perl.misc newsgroup and the perl bug database at . There may also be information at , 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 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 please send it to This points to a closed subscription unarchived mailing list, which includes all the core committers, who will be able to help assess the impact of issues, figure out a resolution, and help co-ordinate the release of patches to mitigate or fix the problem across all platforms on which Perl is supported. Please only use this address for security issues in the Perl core, not for modules independently distributed on CPAN.


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.

syntax highlighting: