PERL5230DELTA(1) Perl Programmers Reference Guide PERL5230DELTA(1)NAMEperl5230delta - what is new for perl v5.23.0
DESCRIPTION
This document describes differences between the 5.22.0 release and the
5.23.0 release.
Core Enhancements
Unicode 8.0 is now supported
For details on what is in this release, see
<http://www.unicode.org/versions/Unicode8.0.0/>.
Incompatible Changes
The "/\C/" character class has been removed.
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('')" no longer chdirs home
Using "chdir('')" or "chdir(undef)" to chdir home has been deprecated
since perl v5.8, and will now fail. Use "chdir()" instead.
Modules and Pragmata
Updated Modules and Pragmata
· 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]
Correct "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]
Platform Support
Platform-Specific Notes
Win32
· 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]
Selected Bug Fixes
· 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.
Acknowledgements
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
Mannsaaker, 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.
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 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 please
send it to perl5-security-report@perl.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.
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.
perl v5.23.3 2015-09-08 PERL5230DELTA(1)
