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An error in first character optimization was causing PCRE to incorrectly evaluate regular expressions where a start-anchored character with more than once case follows circumflex in multi-line UTF-8 mode. This update resolves the problem and PCRE now properly evaluates these regular expressions.
+++ This bug was initially created as a clone of Bug #1110620 +++
A bug has been reported to the upstream:
$ printf '%s\n%s\n' '/^s?c/mi8W' 'sc' | pcretest
PCRE version 8.33 2013-05-28
re> data> No match
While this work with 8.31:
$ printf '%s\n%s\n' '/^s?c/mi8W' 'sc' | ./pcretest
PCRE version 8.31 2012-07-06
re> data> 0: sc
data>
Proposed fix is posted there.
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RHEL-7 (pcre-8.32-12.el7.x86_64) is affected.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-2142.html