JDK : 7b118 FASTDEBUG ( passes on 7b117, JDK6 )
OS : Windows 7

public class JVMCrash {
    public static void main(String[] args) {
        new Window((Frame)null);
    }
}

log is attached

--------------------------------------------------------------------------------
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=\thread.hpp:568
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (C:\BUILD_AREA\jdk7\hotspot\src\share\vm\runtime\thread.hpp:568), pid=6108, tid=500
# assert(thread != NULL) failed: just checking
#
# JRE version: 7.0-b118
# Java VM: Java HotSpot(TM) Client VM (20.0-b02-fastdebug mixed mode windows-x86 )
# An error report file with more information is saved as:
# D:\devhot\synth-jck\hs_err_pid6108.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#
--------------------------------------------------------------------------------

Please see comments for the list of failing tests; it is not complete,
there are only tests directly related to window system.