http://bugs.winehq.org/show_bug.cgi?id=29967
--- Comment #1 from Alexandre Julliard julliard@winehq.org 2012-02-21 14:00:37 CST --- Created attachment 39008 --> http://bugs.winehq.org/attachment.cgi?id=39008 quick and dirty fix
The app is passing garbage coords to Polygon which cause an overflow in clip_line().