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NAME


perl5163delta - what is new for perl v5.16.3

DESCRIPTION


This document describes differences between the 5.16.2 release and the 5.16.3 release.

If you are upgrading from an earlier release such as 5.16.1, first read perl5162delta,
which describes differences between 5.16.1 and 5.16.2.

Core Enhancements


No changes since 5.16.0.

Security


This release contains one major and a number of minor security fixes. These latter are
included mainly to allow the test suite to pass cleanly with the clang compiler's address
sanitizer facility.

CVE-2013-1667: memory exhaustion with arbitrary hash keys
With a carefully crafted set of hash keys (for example arguments on a URL), it is possible
to cause a hash to consume a large amount of memory and CPU, and thus possibly to achieve
a Denial-of-Service.

This problem has been fixed.

wrap-around with IO on long strings
Reading or writing strings greater than 2**31 bytes in size could segfault due to integer
wraparound.

This problem has been fixed.

memory leak in Encode
The UTF-8 encoding implementation in Encode.xs had a memory leak which has been fixed.

Incompatible Changes


There are no changes intentionally incompatible with 5.16.0. If any exist, they are bugs
and reports are welcome.

Deprecations


There have been no deprecations since 5.16.0.

Modules and Pragmata


Updated Modules and Pragmata
· Encode has been upgraded from version 2.44 to version 2.44_01.

· Module::CoreList has been upgraded from version 2.76 to version 2.76_02.

· XS::APItest has been upgraded from version 0.38 to version 0.39.

Known Problems


None.

Acknowledgements


Perl 5.16.3 represents approximately 4 months of development since Perl 5.16.2 and
contains approximately 870 lines of changes across 39 files from 7 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 5.16.3:

Andy Dougherty, Chris 'BinGOs' Williams, Dave Rolsky, David Mitchell, Michael Schroeder,
Ricardo Signes, Yves Orton.

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.

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 [email protected] 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
[email protected]. This points to a closed subscription unarchived mailing
list, which includes all the core committers, who will 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.

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