class BoundBug {
    class C {}

    class B<T extends C>
{
void foo() {
B<? super T> con = null; //ok
B<? extends T> cov = null; //ok
       B<?> biv = null; //fails
B<T> inv = null;
}
    }

    static
{
     B<? super C> con = null; //ok
B<? extends C> cov = null; //ok
B<?> biv = null; //fails
B<C> inv = null;
}
}

/*
BoundBug.java:15: type parameter java.lang.Object is not within its bound
                B<?> biv = null; //this fails
                   ^
BoundBug.java:24: type parameter java.lang.Object is not within its bound
           B<?> biv = null; //and this fails
              ^
2 errors

*/