/*

 * @test /nodynamiccopyright/

 * @bug     6491592

 * @summary Compiler crashes on assignment operator

 * @author  alex.buckley@...

 * @compile/fail/ref=T6491592.out -XDrawDiagnostics T6491592.java

 */

public class T6491592 {

    public static void main(String... args) {

        Object o = null;

        o += null;

    }

}