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NAME    [Toc]    [Back]

       perl582delta - what is new for perl v5.8.2

DESCRIPTION    [Toc]    [Back]

       This document describes differences between the 5.8.1
       release and the 5.8.2 release.

       If you are upgrading from an earlier release such as
       5.6.1, first read the perl58delta, which describes differences
 between 5.6.0 and 5.8.0, and the perl581delta, which
       describes differences between 5.8.0 and 5.8.1.

Incompatible Changes    [Toc]    [Back]

       For threaded builds for modules calling certain re-entrant
       system calls, binary compatibility was accidentally lost
       between 5.8.0 and 5.8.1.  Binary compatibility with 5.8.0
       has been restored in 5.8.2, which necessitates breaking
       compatibility with 5.8.1. We see this as the lesser of two

       This will only affect people who have a threaded perl
       5.8.1, and compiled modules which use these calls, and now
       attempt to run the compiled modules with 5.8.2. The fix is
       to re-compile and re-install the modules using 5.8.2.

Core Enhancements    [Toc]    [Back]

       Hash Randomisation

       The hash randomisation introduced with 5.8.1 has been
       amended. It transpired that although the implementation
       introduced in 5.8.1 was source compatible with 5.8.0, it
       was not binary compatible in certain cases. 5.8.2 contains
       an improved implementation which is both source and binary
       compatible with both 5.8.0 and 5.8.1, and remains robust
       against the form of attack which prompted the change for

       We are grateful to the Debian project for their input in
       this area.  See "Algorithmic Complexity Attacks" in
       perlsec for the original rationale behind this change.

       Threading    [Toc]    [Back]

       Several memory leaks associated with variables shared
       between threads have been fixed.

Modules and Pragmata    [Toc]    [Back]

       Updated Modules And Pragmata

       The following modules and pragmata have been updated since
       Perl 5.8.1:

           Documentation improved

           Documentation improved

           Documentation improved

Selected Bug Fixes    [Toc]    [Back]

       Some syntax errors involving unrecognized filetest operators
 are now handled correctly by the parser.

Changed Internals    [Toc]    [Back]

       Interpreter initialization is more complete when -DMULTIPLICITY
 is off.  This should resolve problems with initializing
 and destroying the Perl interpreter more than
       once in a single process.

Platform Specific Problems    [Toc]    [Back]

       Dynamic linker flags have been tweaked for Solaris and OS
       X, which should solve problems seen while building some XS

       Bugs in OS/2 sockets and tmpfile have been fixed.

       In OS X "setreuid" and friends are troublesome - perl will
       now work around their problems as best possible.

Future Directions    [Toc]    [Back]

       Starting with 5.8.3 we intend to make more frequent maintenance
 releases, with a smaller number of changes in
       each. The intent is to propagate bug fixes out to stable
       releases more rapidly and make upgrading stable releases
       less of an upheaval. This should give end users more flexibility
 in their choice of upgrade timing, and allow them
       easier assessment of the impact of upgrades. The current
       plan is for code freezes as follows

       o   5.8.3 23:59:59 GMT, Wednesday December 31st 2003

       o   5.8.4 23:59:59 GMT, Wednesday March 31st 2004

       o   5.8.5 23:59:59 GMT, Wednesday June 30th 2004

       with the release following soon after, when testing is

       See "Future Directions" in perl581delta for more soothsaying.

Reporting Bugs    [Toc]    [Back]

       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://bugs.perl.org/.
       There may also be information at http://www.perl.com/, 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@perl.org to be analysed by the Perl
       porting team.  You can browse and search the Perl 5 bugs
       at http://bugs.perl.org/

SEE ALSO    [Toc]    [Back]

       The Changes file for 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 v5.8.5                 2002-11-06                          3
[ Back ]
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