You are viewing the version of this documentation from Perl 5.35.8. This is a development version of Perl.



perl5356delta - what is new for perl v5.35.6


This document describes differences between the 5.35.5 release and the 5.35.6 release.

If you are upgrading from an earlier release such as 5.35.4, first read perl5355delta, which describes differences between 5.35.4 and 5.35.5.

Core Enhancements

use v5.36 now disables bareword_filehandles, indirect, and multidimensional

The :5.36 bundle, loaded by use v5.36, no longer includes bareword_filehandles, indirect, or multidimensional meaning that these discouraged forms of syntax will not be allowed within the scope of that version declaration.

This will also affect use v5.35.x, even on subversions of v5.35 prior to this one.

Modules and Pragmata

Updated Modules and Pragmata


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

Platform Support

Discontinued Platforms


DJGPP is a port of the GNU toolchain to 32-bit x86 systems running DOS. The last known attempt to build Perl on it was on 5.20, which only got as far as building miniperl.


UWIN is a UNIX compatibility layer for Windows. It was last released in 2012 and has been superseded by Cygwin these days.

Selected Bug Fixes


David H. Adler (DHA) passed away on November 16, 2021. In 1997, David co-founded, the first Perl user group, and in 1998 co-founded Perl Mongers to help establish other user groups across the globe. He was a frequent attendee at Perl conferences in both North America and Europe and well known for his role in organizing Bad Movie Night celebrations at those conferences. He also contributed to the work of the Perl Foundation, including administering the White Camel awards for community service. He will be sorely missed.


Perl 5.35.6 represents approximately 4 weeks of development since Perl 5.35.5 and contains approximately 16,000 lines of changes across 320 files from 10 authors.

Excluding auto-generated files, documentation and release tools, there were approximately 13,000 lines of changes to 240 .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 5.35.6:

Dagfinn Ilmari Mannsåker, H.Merijn Brand, James E Keenan, Leon Timmermans, Pete Houston, Ricardo Signes, Richard Leach, Robert Rothenberg, Sergey Poznyakoff, 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 There may also be information at, the Perl Home Page.

If you believe you have an unreported bug, please open an issue at Be sure to trim your bug down to a tiny but sufficient test case.

If the bug you are reporting has security implications which make it inappropriate to send to a public issue tracker, 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:


This will send an email to the Perl 5 Porters list with your show of thanks.


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.