The following code compiles perfectly with Eclipse, but fails to compile with javac:

public class HowBizarre {
      public static <P extends Number, T extends P> void doIt(P value) {
      }

      public static void main(String[] args) {
            doIt(null);
      }
}

I simplified the code, so T is not used at all now. Still, I don't see a reason for the error. For some reason javac decides that T stands for Object, and then complains that Object does not conform to the bounds of T (which is true):

HowBizarre.java:6: incompatible types; inferred type argument(s) java.lang.Number,java.lang.Object do not conform to bounds of type variable (s) P,T

found : <P,T>void

required: void

       doIt(null);
           ^

Note that if I replace the null parameter with a non-null value, it compiles fine.

Which of the compilers behaves correctly and why? Is this a bug of one of them?