When compiling this program:

package issue;
public class A {

    public static interface I {
        public void m(String s);
    }
    
    public void add (I i) {}
    
    public static void main(String[] args) {
        A a = new A();
        a.add(() -> {});
    }
}

A spurious diagnostic is generated (with the wrong line info):

error: incompatible types: incompatible parameter types in lambda expression
class A {
^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
1 error