The test in the attachment produces the OOM with both JDK 6u21 and JDK 7,
tested on Windows XP and Windows Vista

The stack trace is:

java.lang.OutOfMemoryError: Java heap space
        at sun.awt.geom.AreaOp.resolveLinks(AreaOp.java:434)
        at sun.awt.geom.AreaOp.pruneEdges(AreaOp.java:374)
        at sun.awt.geom.AreaOp.calculate(AreaOp.java:141)
        at java.awt.geom.Area.intersect(Area.java:275)
        at AreaBug.main(AreaBug.java:67)
Clipping Area took 65434 ms