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4.77. pcre

Updated pcre packages that fix several bugs are now available for Red Hat Enterprise Linux 5.
The pcre packages provide the Perl-compatible regular expression (PCRE) library.

Bug Fixes

A previous update enabled Unicode properties to support \p{..}, \P{..}, and \X escape sequences. However, compiling certain regular expressions which contained extended classes under a non-UTF-8 PCRE mode failed due to the compilation entering an infinite loop. This has been fixed in this update so that compiling such regular expressions completes as expected.
Using the pcregrep tool with -M (mutli-line match) and -v (inverse match) options caused the pcregrep tool to loop infinitely. With this update, the pcregrep multi-line loop logic has been fixed to advance in the input stream properly if inverted matching is requested, and it is now possible to use the "pcregrep -Mv" command.
Previously, matching a regular expression with Unicode properties in a non-UTF-8 mode against a string with non-ASCII characters, caused an unexpected termination with a segmentation fault in the PCRE library. This update fixes back-tracking in non-UTF-8 mode, and the PCRE library no longer crashes in the aforementioned scenario.
Users of pcre are advised to upgrade to these updated packages, which fix these bugs.