--- old/agent/src/share/classes/sun/jvm/hotspot/tools/ObjectHistogram.java	2013-06-25 10:52:37.832786002 +0100
+++ new/agent/src/share/classes/sun/jvm/hotspot/tools/ObjectHistogram.java	2013-06-25 10:52:37.732786002 +0100
@@ -33,6 +33,14 @@
     an object histogram from a remote or crashed VM. */
 public class ObjectHistogram extends Tool {
 
+    public ObjectHistogram() {
+       super();
+    }
+
+    public ObjectHistogram(JVMDebugger d) {
+       super(d);
+    }
+
    public void run() {
       run(System.out, System.err);
    }