When you print a field whose value is null, the error message says it is not a valid field. It *should* just report the value as null.


To use this test case, type the following:

javac -g WrongMessage.java
jdb WrongMessage
stop in WrongMessage.stop
run
print w.a
print w.b

---

For 'print w.a', you get:

  w.a = this is a non-null string

For 'print w.b', you get:

  "b" is not a valid field of (WrongMessage)0xee306998

This is wrong! You SHOULD get:

  w.b = null


--- Here is the test case code:

public class WrongMessage
{
  String a;
  String b;

  public static void main(String argv[])
  {
    WrongMessage w = new WrongMessage();
    w.a = "this is a non-null string";
    stop(w);
  }

  public static void stop(WrongMessage w)
  {
    System.out.println("w.a = "+w.a);
    System.out.println("w.b = "+w.b);
  }
}