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perl5123delta (1)


perl5123delta - what is new for perl v5.12.3


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Perl Programmers Reference Guide                 PERL5123DELTA(1)

     perldelta - what is new for perl v5.12.3

     This document describes differences between the 5.12.2
     release and the 5.12.3 release.

     If you are upgrading from an earlier release such as 5.12.1,
     first read perl5122delta, which describes differences
     between 5.12.1 and 5.12.2.  The major changes made in 5.12.0
     are described in perl5120delta.

Incompatible Changes
         There are no changes intentionally incompatible with 5.12.2. If any
         exist, they are bugs and reports are welcome.

Core Enhancements
  "keys", "values" work on arrays
     You can now use the "keys", "values", "each" builtin
     functions on arrays (previously you could only use them on
     hashes).  See perlfunc for details.  This is actually a
     change introduced in perl 5.12.0, but it was missed from
     that release's perldelta.

Bug Fixes
     "no VERSION" will now correctly deparse with B::Deparse, as
     will certain constant expressions.

     Module::Build should be more reliably pass its tests under

     lvalue sub return values are now COW.

Platform Specific Notes
         A separate DTrace is now build for miniperl, which means
         that perl can be compiled with -Dusedtrace on Solaris

     VMS A number of regressions on VMS have been fixed.  In
         addition to minor cleanup of questionable expressions in
         vms.c, file permissions should no longer be garbled by
         the PerlIO layer, and spurious record boundaries should
         no longer be introduced by the PerlIO layer during

         For more details and discussion on the latter, see:


     VOS A few very small changes were made to the build process
         on VOS to better support the platform.

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Perl Programmers Reference Guide                 PERL5123DELTA(1)

         Longer-than-32-character filenames are now supported on
         OpenVOS, and build properly without IPv6 support.

     Perl 5.12.3 represents approximately four months of
     development since Perl 5.12.2 and contains approximately
     2500 lines of changes across 54 files from 16 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 5.12.3:

     Craig A. Berry, David Golden, David Leadbeater, Father
     Chrysostomos, Florian Ragwitz, Jesse Vincent, Karl
     Williamson, Nick Johnston, Nicolas Kaiser, Paul Green,
     Rafael Garcia-Suarez, Rainer Tammer, Ricardo Signes, Steffen
     Mueller, Zsban Ambrus, var Arnfjoer` Bjarmason

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 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 attributes(5) for descriptions of the following

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Perl Programmers Reference Guide                 PERL5123DELTA(1)

     |Availability   | runtime/perl-512 |
     |Stability      | Uncommitted      |
     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.

     This software was built from source available at  The original
     community source was downloaded from

     Further information about this software can be found on the
     open source community website at

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