- Core Enhancements
- Incompatible Changes
- Modules and Pragmata
- Platform Support
- Selected Bug Fixes
- Reporting Bugs
- SEE ALSO
perldelta - what is new for perl v5.23.0
This document describes differences between the 5.22.0 release and the 5.23.0 release.
For details on what is in this release, see http://www.unicode.org/versions/Unicode8.0.0/.
This regular expression character class was deprecated in v5.20.0 and has produced a deprecation warning since v5.22.0. It is now a compile-time error. If you need to examine the individual bytes that make up a UTF8-encoded character, then use
utf8::encode() on the string (or a copy) first.
chdir(undef) to chdir home has been deprecated since perl v5.8, and will now fail. Use
The libnet distribution has been upgraded from version 3.05 to 3.06.
The Scalar-List-Utils distribution has been upgraded from version 1.41 to 1.42.
autodie has been upgraded from version 2.26 to 2.27.
CPAN::Meta has been upgraded from version 2.150001 to 2.150005.
CPAN::Meta::Requirements has been upgraded from version 2.132 to 2.133.
CPAN::Meta::YAML has been upgraded from version 0.012 to 0.016.
Encode has been upgraded from version 2.72 to 2.73.
encoding has been upgraded from version 2.14 to 2.15.
ExtUtils::CBuilder has been upgraded from version 0.280221 to 0.280223.
feature has been upgraded from version 1.40 to 1.41.
Getopt::Long has been upgraded from version 2.45 to 2.46.
HTTP::Tiny has been upgraded from version 0.054 to 0.056.
List::Util has been upgraded from version 1.41 to 1.42_01.
Locale::Codes has been upgraded from version 3.34 to 3.35.
Math::BigInt has been upgraded from version 1.9997 to 1.999701.
Correct the behaviour of bdiv() and bmod() in list context. [perl #124300]
Math::BigInt->new()for non-integer input. [perl #124325]
Speed up Math::BigFloat -> blog(). [perl #124382]
Fix bug in Math::BigFloat's bceil() and bint() methods. [perl #124412]
Math::BigRat has been upgraded from version 0.2608 to 0.260801.
Correct the behaviour of bdiv() and bmod() in list context. [perl #124303]
Module::CoreList has been upgraded from version 5.20150520 to 5.20150620.
Module::Metadata has been upgraded from version 1.000026 to 1.000027.
parent has been upgraded from version 0.232 to 0.234.
Parse::CPAN::Meta has been upgraded from version 1.4414 to 1.4417.
perl5db.pl has been upgraded from version 1.49 to 1.49_01.
User actions are no longer evaluated after the script under the debugger finishes. [perl #71678]
Pod::Simple has been upgraded from version 3.29 to 3.30.
Pod::Usage has been upgraded from version 1.64 to 1.67.
POSIX has been upgraded from version 1.53 to 1.54.
The NaN payload API has been implemented (getpayload, setpayload, setpayloadsig, issignaling).
Scalar::Util has been upgraded from version 1.41 to 1.42_01.
Socket has been upgraded from version 2.018 to 2.019.
threads has been upgraded from version 2.01 to 2.02.
Time::Piece has been upgraded from version 1.29 to 1.30.
UNIVERSAL has been upgraded from version 1.12 to 1.13.
Don't import from UNIVERSAL in its documentation, it no longer exports anything. [perl #125410]
Visual C++ 2013 builds will now execute on XP and higher. Previously they would only execute on Vista and higher.
You can now build perl with GNU Make and GCC. [perl #123440]
truncate($filename, $size)now works for files over 4GB in size. [perl #125347]
Duplicating a closed file handle for write no longer creates a filename of the form GLOB(0xXXXXXXXX). [perl #125115]
Warning fatality is now ignored when rewinding the stack. This prevents infinite recursion when the now fatal error also causes rewinding of the stack. [perl #123398]
In perl v5.22.0, the logic changed when parsing a numeric parameter to the -C option, such that the successfully parsed number was not saved as the option value if it parsed to the end of the argument. [perl #125381]
The PadlistNAMES macro is an lvalue again.
Zero -DPERL_TRACE_OPS memory for sub-threads.
perl_clone_using() was missing Zero init of PL_op_exec_cnt. This caused sub-threads in threaded -DPERL_TRACE_OPS builds to spew exceedingly large op-counts at destruct. These counts would print %x as "ABABABAB", clearly a mem-poison value.
Perl 5.23.0 represents approximately 3 weeks of development since Perl 5.22.0 and contains approximately 86,000 lines of changes across 480 files from 29 authors.
Excluding auto-generated files, documentation and release tools, there were approximately 55,000 lines of changes to 270 .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 5.23.0:
Chase Whitener, Chris 'BinGOs' Williams, Craig A. Berry, Dagfinn Ilmari Mannsåker, Daniel Dragan, David Golden, David Mitchell, Hugo van der Sanden, Jan Dubois, Jarkko Hietaniemi, Jerry D. Hedden, Jim Cromie, Karen Etheridge, Karl Williamson, kmx, Lukas Mai, Martijn Lievaart, Matthew Horsfall, Niko Tyni, Peter John Acklam, Rafael Garcia-Suarez, Reini Urban, Ricardo Signes, Shlomi Fish, Steve Hay, Thomas Sibley, Tony Cook, Unicode Consortium, Zefram.
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.
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 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 email@example.com 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 firstname.lastname@example.org. 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.