--- a/src/core/ref-count-base.cc	Tue Jul 08 10:16:53 2008 -0700
+++ b/src/core/ref-count-base.cc	Tue Jul 08 10:17:18 2008 -0700
@@ -43,4 +43,10 @@
 {
 }
 
+uint32_t
+RefCountBase::GetReferenceCount (void) const
+{
+  return m_count;
+}
+
 } // namespace ns3