{
    "mode": "man",
    "parameter": "perl5141delta",
    "section": "1",
    "url": "https://www.chedong.com/phpMan.php/man/perl5141delta/1/json",
    "generated": "2026-06-04T22:31:59Z",
    "sections": {
        "NAME": {
            "content": "perl5141delta - what is new for perl v5.14.1\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "This document describes differences between the 5.14.0 release and the 5.14.1 release.\n\nIf you are upgrading from an earlier release such as 5.12.0, first read perl5140delta, which\ndescribes differences between 5.12.0 and 5.14.0.\n",
            "subsections": [
                {
                    "name": "Core Enhancements",
                    "content": "No changes since 5.14.0.\n"
                }
            ]
        },
        "Security": {
            "content": "No changes since 5.14.0.\n",
            "subsections": [
                {
                    "name": "Incompatible Changes",
                    "content": "There are no changes intentionally incompatible with 5.14.0. If any exist, they are bugs and\nreports are welcome.\n"
                }
            ]
        },
        "Deprecations": {
            "content": "There have been no deprecations since 5.14.0.\n",
            "subsections": [
                {
                    "name": "Modules and Pragmata",
                    "content": ""
                },
                {
                    "name": "New Modules and Pragmata",
                    "content": "None\n"
                },
                {
                    "name": "Updated Modules and Pragmata",
                    "content": "•   B::Deparse has been upgraded from version 1.03 to 1.04, to address two regressions in\nPerl 5.14.0:\n\nDeparsing of the \"glob\" operator and its diamond (\"<>\") form now works again. [perl\n#90898]\n\nThe presence of subroutines named \"::::\" or \"::::::\" no longer causes B::Deparse to hang.\n\n•   Pod::Perldoc has been upgraded from version 3.1503 to 3.1504.\n\nIt corrects the search paths on VMS. [perl #90640]\n"
                },
                {
                    "name": "Removed Modules and Pragmata",
                    "content": "None\n"
                }
            ]
        },
        "Documentation": {
            "content": "",
            "subsections": [
                {
                    "name": "New Documentation",
                    "content": "None\n"
                },
                {
                    "name": "Changes to Existing Documentation",
                    "content": "perlfunc\n\n•   \"given\", \"when\" and \"default\" are now listed in perlfunc.\n\n•   Documentation for \"use\" now includes a pointer to if.pm.\n\nperllol\n\n•   perllol has been expanded with examples using the new \"push $scalar\" syntax introduced in\nPerl 5.14.0.\n\nperlop\n\n•   The explanation of bitwise operators has been expanded to explain how they work on\nUnicode strings.\n\n•   The section on the triple-dot or yada-yada operator has been moved up, as it used to\nseparate two closely related sections about the comma operator.\n\n•   More examples for \"m//g\" have been added.\n\n•   The \"<<\\FOO\" here-doc syntax has been documented.\n\nperlrun\n\n•   perlrun has undergone a significant clean-up.  Most notably, the -0x... form of the -0\nflag has been clarified, and the final section on environment variables has been\ncorrected and expanded.\n\nPOSIX\n\n•   The invocation documentation for \"WIFEXITED\", \"WEXITSTATUS\", \"WIFSIGNALED\", \"WTERMSIG\",\n\"WIFSTOPPED\", and \"WSTOPSIG\" was corrected.\n"
                }
            ]
        },
        "Diagnostics": {
            "content": "The following additions or changes have been made to diagnostic output, including warnings\nand fatal error messages.  For the complete list of diagnostic messages, see perldiag.\n",
            "subsections": [
                {
                    "name": "New Diagnostics",
                    "content": "None\n"
                },
                {
                    "name": "Changes to Existing Diagnostics",
                    "content": "None\n"
                },
                {
                    "name": "Utility Changes",
                    "content": "None\n"
                },
                {
                    "name": "Configuration and Compilation",
                    "content": "•   regexp.h has been modified for compatibility with GCC's \"-Werror\" option, as used by some\nprojects that include perl's header files.\n"
                }
            ]
        },
        "Testing": {
            "content": "•   Some test failures in dist/Locale-Maketext/t/09compile.t that could occur depending on\nthe environment have been fixed. [perl #89896]\n\n•   A watchdog timer for t/re/re.t was lengthened to accommodate SH-4 systems which were\nunable to complete the tests before the previous timer ran out.\n",
            "subsections": [
                {
                    "name": "Platform Support",
                    "content": ""
                },
                {
                    "name": "New Platforms",
                    "content": "None\n"
                },
                {
                    "name": "Discontinued Platforms",
                    "content": "None\n"
                },
                {
                    "name": "Platform-Specific Notes",
                    "content": "Solaris\n\n•   Documentation listing the Solaris packages required to build Perl on Solaris 9 and\nSolaris 10 has been corrected.\n\nMac OS X\n\n•   The lib/locale.t test script has been updated to work on the upcoming Lion release.\n\n•   Mac OS X specific compilation instructions have been clarified.\n\nUbuntu Linux\n\n•   The ODBMFile installation process has been updated with the new library paths on Ubuntu\nnatty.\n"
                },
                {
                    "name": "Internal Changes",
                    "content": "•   The compiled representation of formats is now stored via the mgptr of their\nPERLMAGICfm. Previously it was stored in the string buffer, beyond SvLEN(), the regular\nend of the string. SvCOMPILED() and SvCOMPILED{on,off}() now exist solely for\ncompatibility for XS code.  The first is always 0, the other two now no-ops.\n"
                },
                {
                    "name": "Bug Fixes",
                    "content": "•   A bug has been fixed that would cause a \"Use of freed value in iteration\" error if the\nnext two hash elements that would be iterated over are deleted. [perl #85026]\n\n•   Passing the same constant subroutine to both \"index\" and \"formline\" no longer causes one\nor the other to fail. [perl #89218]\n\n•   5.14.0 introduced some memory leaks in regular expression character classes such as\n\"[\\w\\s]\", which have now been fixed.\n\n•   An edge case in regular expression matching could potentially loop.  This happened only\nunder \"/i\" in bracketed character classes that have characters with multi-character\nfolds, and the target string to match against includes the first portion of the fold,\nfollowed by another character that has a multi-character fold that begins with the\nremaining portion of the fold, plus some more.\n\n\"s\\N{U+DF}\" =~ /[\\x{DF}foo]/i\n\nis one such case.  \"\\xDF\" folds to \"ss\".\n\n•   Several Unicode case-folding bugs have been fixed.\n\n•   The new (in 5.14.0) regular expression modifier \"/a\" when repeated like \"/aa\" forbids the\ncharacters outside the ASCII range that match characters inside that range from matching\nunder \"/i\".  This did not work under some circumstances, all involving alternation, such\nas:\n\n\"\\N{KELVIN SIGN}\" =~ /k|foo/iaa;\n\nsucceeded inappropriately.  This is now fixed.\n\n•   Fixed a case where it was possible that a freed buffer may have been read from when\nparsing a here document.\n"
                }
            ]
        },
        "Acknowledgements": {
            "content": "Perl 5.14.1 represents approximately four weeks of development since Perl 5.14.0 and contains\napproximately 3500 lines of changes across 38 files from 17 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 5.14.1:\n\nBo Lindbergh, Claudio Ramirez, Craig A. Berry, David Leadbeater, Father Chrysostomos, Jesse\nVincent, Jim Cromie, Justin Case, Karl Williamson, Leo Lapworth, Nicholas Clark, Nobuhiro\nIwamatsu, smash, Tom Christiansen, Ton Hospel, Vladimir Timofeev, and Zsbán Ambrus.\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 be able to help assess the impact of issues, figure out a resolution, and\nhelp co-ordinate the release of patches to mitigate or fix the problem across all platforms\non which Perl is supported. Please only use this address for security issues in the Perl\ncore, 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                             PERL5141DELTA(1)",
            "subsections": []
        }
    },
    "summary": "perl5141delta - what is new for perl v5.14.1",
    "flags": [],
    "examples": [],
    "see_also": []
}