--- old/src/share/vm/memory/heapInspection.cpp	2016-01-13 23:35:29.307040000 +0100
+++ new/src/share/vm/memory/heapInspection.cpp	2016-01-13 23:35:29.135024000 +0100
@@ -40,6 +40,14 @@
 
 // HeapInspection
 
+int KlassSizeStats::count(oop x) {
+  return (HeapWordSize * (((x) != NULL) ? (x)->size() : 0));
+}
+
+int KlassSizeStats::count_array(objArrayOop x) {
+  return (HeapWordSize * (((x) != NULL) ? (x)->size() : 0));
+}
+
 inline KlassInfoEntry::~KlassInfoEntry() {
   if (_subclasses != NULL) {
     delete _subclasses;