{
    "mode": "man",
    "parameter": "perl5123delta",
    "section": "1",
    "url": "https://www.chedong.com/phpMan.php/man/perl5123delta/1/json",
    "generated": "2026-06-13T21:26:18Z",
    "sections": {
        "NAME": {
            "content": "perl5123delta - what is new for perl v5.12.3\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "This document describes differences between the 5.12.2 release and the 5.12.3 release.\n\nIf you are upgrading from an earlier release such as 5.12.1, first read perl5122delta, which\ndescribes differences between 5.12.1 and 5.12.2.  The major changes made in 5.12.0 are\ndescribed in perl5120delta.\n",
            "subsections": [
                {
                    "name": "Incompatible Changes",
                    "content": "There are no changes intentionally incompatible with 5.12.2. If any\nexist, they are bugs and reports are welcome.\n"
                },
                {
                    "name": "Core Enhancements",
                    "content": ""
                },
                {
                    "name": "\"keys\", \"values\" work on arrays",
                    "content": "You can now use the \"keys\", \"values\", \"each\" builtin functions on arrays (previously you\ncould only use them on hashes).  See perlfunc for details.  This is actually a change\nintroduced in perl 5.12.0, but it was missed from that release's perldelta.\n"
                },
                {
                    "name": "Bug Fixes",
                    "content": "\"no VERSION\" will now correctly deparse with B::Deparse, as will certain constant\nexpressions.\n\nModule::Build should be more reliably pass its tests under cygwin.\n\nLvalue subroutines are again able to return copy-on-write scalars.  This had been broken\nsince version 5.10.0.\n"
                },
                {
                    "name": "Platform Specific Notes",
                    "content": "Solaris\nA separate DTrace is now build for miniperl, which means that perl can be compiled with\n-Dusedtrace on Solaris again.\n\nVMS A number of regressions on VMS have been fixed.  In addition to minor cleanup of\nquestionable expressions in vms.c, file permissions should no longer be garbled by the\nPerlIO layer, and spurious record boundaries should no longer be introduced by the PerlIO\nlayer during output.\n\nFor more details and discussion on the latter, see:\n\nhttp://www.nntp.perl.org/group/perl.vmsperl/2010/11/msg15419.html\n\nVOS A few very small changes were made to the build process on VOS to better support the\nplatform.  Longer-than-32-character filenames are now supported on OpenVOS, and build\nproperly without IPv6 support.\n"
                }
            ]
        },
        "Acknowledgements": {
            "content": "Perl 5.12.3 represents approximately four months of development since Perl 5.12.2 and\ncontains approximately 2500 lines of changes across 54 files from 16 authors.\n\nPerl continues to flourish into its third decade thanks to a vibrant community of users and\ndevelopers.  The following people are known to have contributed the improvements that became\nPerl 5.12.3:\n\nCraig A. Berry, David Golden, David Leadbeater, Father Chrysostomos, Florian Ragwitz, Jesse\nVincent, Karl Williamson, Nick Johnston, Nicolas Kaiser, Paul Green, Rafael Garcia-Suarez,\nRainer Tammer, Ricardo Signes, Steffen Mueller, Zsbán Ambrus, Ævar Arnfjörð Bjarmason\n",
            "subsections": [
                {
                    "name": "Reporting Bugs",
                    "content": "If you find what you think is a bug, you might check the articles recently posted to the\ncomp.lang.perl.misc newsgroup and the perl bug database at http://rt.perl.org/perlbug/ .\nThere may also be information at http://www.perl.org/ , the Perl Home Page.\n\nIf you believe you have an unreported bug, please run the perlbug program included with your\nrelease.  Be sure to trim your bug down to a tiny but sufficient test case.  Your bug report,\nalong with the output of \"perl -V\", will be sent off to perlbug@perl.org to be analysed by\nthe Perl porting team.\n\nIf the bug you are reporting has security implications, which make it inappropriate to send\nto a publicly archived mailing list, then please send it to perl5-security-report@perl.org.\nThis points to a closed subscription unarchived mailing list, which includes all the core\ncommitters, who will be able to help assess the impact of issues, figure out a resolution,\nand help co-ordinate the release of patches to mitigate or fix the problem across all\nplatforms on which Perl is supported. Please only use this address for security issues in the\nPerl core, not for modules independently distributed on CPAN.\n"
                }
            ]
        },
        "SEE ALSO": {
            "content": "The Changes file for an explanation of how to view exhaustive details on what changed.\n\nThe INSTALL file for how to build Perl.\n\nThe README file for general stuff.\n\nThe Artistic and Copying files for copyright information.\n\n\n\nperl v5.34.0                                 2025-07-25                             PERL5123DELTA(1)",
            "subsections": []
        }
    },
    "summary": "perl5123delta - what is new for perl v5.12.3",
    "flags": [],
    "examples": [],
    "see_also": []
}