MacOS X 10.7.4 macmini4,1 and iMac

Run the regression test javax/swing/JFileChooser/6520101/bug6520101.java. I run it with forced Nimbus LaF but it doesn't matter, it seems, since JFileChooser is in Metal as I can see. It will run some 118 seconds on 7u6 b11 and pass.

However on 7u6 b12 it runs some 300 sec and does crash. A native crash log attached.