[8u-dev] (XS) RFR 8169056: StringIndexOutOfBoundsException in Pattern.compile with CANON_EQ flag

[Ivan Gerasimov]

Hello!

This is an 8u-dev only fix.
(In 9 the bug was fixed with a massive update [1]).

The fix is essentially one-liner: just check that the index remains 
within the bounds after update.
Regression test was updated to cover the case.

Would you please help review at your convenience?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8169056
WEBREV: http://cr.openjdk.java.net/~igerasim/8169056/00/webrev/

[1] http://hg.openjdk.java.net/jdk9/dev/jdk/rev/d0c319c32334

-- 
With kind regards,
Ivan Gerasimov