Reviewed by Mark Rowe.

        <rdar://problem/5826236> Regular expressions with large nested repetition counts can have their
        compiled length calculated incorrectly.

        * pcre/pcre_compile.cpp:
        (multiplyWithOverflowCheck):
        (calculateCompiledPatternLength): Check for overflow when dealing with nested repetition counts
        and bail with an error rather than returning incorrect results.

2008-03-27  Mark Rowe  <mrowe@apple.com>

        Reviewed by Adam Roben.

        Tests for <rdar://problem/5826236> Regular expressions with large nested repetition counts can have their
        compiled length calculated incorrectly.

        * fast/js/regexp-overflow-expected.txt:
        * fast/js/resources/regexp-overflow.js:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@31388 268f45cc-cd09-0410-ab3c-d52691b4dbfc