http://bugs.winehq.org/show_bug.cgi?id=30073
--- Comment #3 from Henri Verbeet hverbeet@gmail.com 2012-03-04 08:29:00 CST --- (In reply to comment #2)
so mesa with O2 still okey, seems that problem cause some optimalization in O3, BUT why wine doesn't give any information about fault? I think this should be handeled.
Steam catches the exception. You can read the minidump it creates with winedbg or use -nobreakpad.