man > perl5143delta(1)

PERL5143DELTA(1)                  Perl Programmers Reference Guide                  PERL5143DELTA(1)

NAME
       perl5143delta - what is new for perl v5.14.3

DESCRIPTION
       This document describes differences between the 5.14.2 release and the 5.14.3 release.

       If you are upgrading from an earlier release such as 5.12.0, first read perl5140delta, which
       describes differences between 5.12.0 and 5.14.0.

Core Enhancements
       No changes since 5.14.0.

Security
   "Digest" unsafe use of eval (CVE-2011-3597)
       The "Digest->new()" function did not properly sanitize input before using it in an eval()
       call, which could lead to the injection of arbitrary Perl code.

       In order to exploit this flaw, the attacker would need to be able to set the algorithm name
       used, or be able to execute arbitrary Perl code already.

       This problem has been fixed.

   Heap buffer overrun in 'x' string repeat operator (CVE-2012-5195)
       Poorly written perl code that allows an attacker to specify the count to perl's 'x' string
       repeat operator can already cause a memory exhaustion denial-of-service attack. A flaw in
       versions of perl before 5.15.5 can escalate that into a heap buffer overrun; coupled with
       versions of glibc before 2.16, it possibly allows the execution of arbitrary code.

       This problem has been fixed.

Incompatible Changes
       There are no changes intentionally incompatible with 5.14.0. If any exist, they are bugs and
       reports are welcome.

Deprecations
       There have been no deprecations since 5.14.0.

Modules and Pragmata
   New Modules and Pragmata
       None

   Updated Modules and Pragmata
       •   PerlIO::scalar  was  updated  to  fix  a bug in which opening a filehandle to a glob copy
           caused assertion failures (under debugging) or hangs or other erratic  behaviour  without
           debugging.

       •   ODBM_File and NDBM_File were updated to allow building on GNU/Hurd.

       •   IPC::Open3  has  been  updated  to  fix a regression introduced in perl 5.12, which broke
           "IPC::Open3::open3($in, $out, $err, '-')".  [perl #95748]

       •   Digest has been upgraded from version 1.16 to 1.16_01.

           See "Security".

       •   Module::CoreList has been updated to version 2.49_04 to add data for this release.

   Removed Modules and Pragmata
       None

Documentation
   New Documentation
       None

   Changes to Existing Documentation
       perlcheat

       •   perlcheat was updated to 5.14.

Configuration and Compilation
       •   h2ph was updated to search correctly gcc include directories on platforms such as  Debian
           with multi-architecture support.

       •   In Configure, the test for procselfexe was refactored into a loop.

Platform Support
   New Platforms
       None

   Discontinued Platforms
       None

   Platform-Specific Notes
       FreeBSD
           The FreeBSD hints file was corrected to be compatible with FreeBSD 10.0.

       Solaris and NetBSD
           Configure was updated for "procselfexe" support on Solaris and NetBSD.

       HP-UX
           README.hpux was updated to note the existence of a broken header in HP-UX 11.00.

       Linux
           libutil  is no longer used when compiling on Linux platforms, which avoids warnings being
           emitted.

           The system gcc (rather than any other gcc which might be in the compiling user's path) is
           now used when searching for libraries such as "-lm".

       Mac OS X
           The locale tests were updated to reflect the behaviour of locales in Mountain Lion.

       GNU/Hurd
           Various build and test fixes were included for GNU/Hurd.

           LFS support was enabled in GNU/Hurd.

       NetBSD
           The NetBSD hints file was corrected to be compatible with NetBSD 6.*

Bug Fixes
       •   A regression has been fixed that was introduced  in  5.14,  in  "/i"  regular  expression
           matching, in which a match improperly fails if the pattern is in UTF-8, the target string
           is  not, and a Latin-1 character precedes a character in the string that should match the
           pattern.  [perl #101710]

       •   In case-insensitive regular expression pattern  matching,  no  longer  on  UTF-8  encoded
           strings  does  the  scan for the start of match only look at the first possible position.
           This caused matches such as ""f\x{FB00}" =~ /ff/i" to fail.

       •   The sitecustomize support was made relocatableinc aware, so that  -Dusesitecustomize  and
           -Duserelocatableinc may be used together.

       •   The  smartmatch  operator ("~~") was changed so that the right-hand side takes precedence
           during "Any ~~ Object" operations.

       •   A bug has been fixed in the tainting support, in which an index() operation on a  tainted
           constant would cause all other constants to become tainted.  [perl #64804]

       •   A  regression  has  been  fixed that was introduced in perl 5.12, whereby tainting errors
           were not correctly propagated through die().  [perl #111654]

       •   A regression has been fixed that was introduced in perl 5.14, in  which  "/[[:lower:]]/i"
           and "/[[:upper:]]/i" no longer matched the opposite case.  [perl #101970]

Acknowledgements
       Perl  5.14.3 represents approximately 12 months of development since Perl 5.14.2 and contains
       approximately 2,300 lines of changes across 64 files from 22 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 5.14.3:

       Abigail, Andy Dougherty, Carl Hayter, Chris 'BinGOs' Williams, Dave Rolsky,  David  Mitchell,
       Dominic  Hargreaves,  Father  Chrysostomos, Florian Ragwitz, H.Merijn Brand, Jilles Tjoelker,
       Karl Williamson, Leon Timmermans, Michael G Schwern, Nicholas Clark, Niko Tyni, Pino Toscano,
       Ricardo Signes, Salvador Fandiño, Samuel Thibault, Steve Hay, 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 perlbug AT 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 AT perl.org.
       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 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 v5.38.2                                 2026-06-12                             PERL5143DELTA(1)