I'm running one of these now, interestingly enough. Apparently something's broken in OpenJDK if you build with the new Xcode. So I'm bisecting on all the files (choosing either the old or new compiler) trying to see which one is breaking things.
For those following along, I ended up doing four levels of bisects to find the actual problem. First the bisect I described above to identify the problematic file–stackMapTable.cpp. Then another on the functions inside of the file with optimizations and without to find the function that was broken: StackMapReader::next(StackMapFrame, bool, unsigned short, unsigned short, JavaThread). With that I manually inspected the code generated, found that it was wrong, and then did a bisect on optimization passes to see which one broke it (ConstraintEliminationPass). Finally one last bisect to see the history of where this came from (seems to be fixed in a change Xcode hasn't pulled yet).
