Description Stephan Herrmann 2013-02-13 11:13:43 EST

The following code generates wrong code:

interface I {
    public void foo() default {
        System.out.println("default");
    }
}
public class C implements I {
    public static void main(String[] args) {
        C c = new C();
        c.foo();
    }
}

At runtime this produces:
Exception in thread "main" java.lang.NoSuchMethodError: java.lang.Object.foo()V
	at C.foo(C.java:1)
	at C.main(C.java:9)

The reason is in the way a synthetic method (SuperMethodAccess) for foo is generated: it is assumed that the super method must be in accessMethod.declaringClass.superclass(), which leads to trying to invoke java.lang.Object.foo(), which obviously doesn't exist.