PERL5161DELTA(1) Perl Programmers Reference Guide PERL5161DELTA(1)
NAME
perl5161delta - what is new for perl v5.16.1
DESCRIPTION
This document describes differences between the 5.16.0 release and the 5.16.1 release.
If you are upgrading from an earlier release such as 5.14.0, first read perl5160delta, which describes
differences between 5.14.0 and 5.16.0.
Security
an off-by-two error in Scalar-List-Util has been fixed
The bugfix was in Scalar-List-Util 1.23_04, and perl 5.16.1 includes Scalar-List-Util 1.25.
Incompatible Changes
There are no changes intentionally incompatible with 5.16.0 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
· Scalar::Util and List::Util have been upgraded from version 1.23 to version 1.25.
· B::Deparse has been updated from version 1.14 to 1.14_01. An "uninitialized" warning emitted by
B::Deparse has been squashed [perl #113464].
Configuration and Compilation
· Building perl with some Windows compilers used to fail due to a problem with miniperl's "glob" operator
(which uses the "perlglob" program) deleting the PATH environment variable [perl #113798].
Platform Support
Platform-Specific Notes
VMS All C header files from the top-level directory of the distribution are now installed on VMS, providing
consistency with a long-standing practice on other platforms. Previously only a subset were installed,
which broke non-core extension builds for extensions that depended on the missing include files.
Selected Bug Fixes
· A regression introduced in Perl v5.16.0 involving "tr/SEARCHLIST/REPLACEMENTLIST/" has been fixed. Only
the first instance is supposed to be meaningful if a character appears more than once in "SEARCHLIST".
Under some circumstances, the final instance was overriding all earlier ones. [perl #113584]
· "B::COP::stashlen" has been added. This provides access to an internal field added in perl 5.16 under
threaded builds. It was broken at the last minute before 5.16 was released [perl #113034].
· The re pragma will no longer clobber $_. [perl #113750]
· Unicode 6.1 published an incorrect alias for one of the Canonical_Combining_Class property's values (which
range between 0 and 254). The alias "CCC133" should have been "CCC132". Perl now overrides the data file
furnished by Unicode to give the correct value.
· Duplicating scalar filehandles works again. [perl #113764]
· Under threaded perls, a runtime code block in a regular expression could corrupt the package name stored
in the op tree, resulting in bad reads in "caller", and possibly crashes [perl #113060].
· For efficiency's sake, many operators and built-in functions return the same scalar each time. Lvalue
subroutines and subroutines in the CORE:: namespace were allowing this implementation detail to leak
through. "print &CORE::uc("a"), &CORE::uc("b")" used to print "BB". The same thing would happen with an
Perl 5.16.1 represents approximately 2 months of development since Perl 5.16.0 and contains approximately
14,000 lines of changes across 96 files from 8 authors.
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 5.16.1:
Chris 'BinGOs' Williams, Craig A. Berry, Father Chrysostomos, Karl Williamson, Paul Johnson, Reini Urban,
Ricardo Signes, 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 articles recently posted to the comp.lang.perl.misc
newsgroup and the perl bug database at http://rt.perl.org/perlbug/ . 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 protected] 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 [email protected]. 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 v5.16.3 2013-03-04 PERL5161DELTA(1)
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