Bug 77861

Description Markus Keller 2004-11-04 11:59:44 EST

3.1M3 test pass

The following class gets compiled without errors:

  public class K implements Comparable<K> {
    public int compareTo(Object o) {
      return 0;
    }
    public int compareTo(K o) {
      return 1;
    }
  }

The class file gets 3 methods:
- public int compareTo(Object arg);
- public int compareTo(K arg);
- public bridge synthetic int compareTo(Object arg);

Using the class with ...
  class User {
    public static void main(String[] args) {
      K k= new K();
      k.compareTo(new K());
    }
  }
... gives a classloader exception:
Exception in thread "main" java.lang.ClassFormatError: Repetitive method
name/signature in class file k/K

javac1.5.0 resists to compile the source:
name clash: compareTo(java.lang.Object) in k.K and compareTo(T) in
java.lang.Comparable<k.K> have the same erasure, yet neither overrides the other