Index: Var_Size_SArgument_T.cpp
===================================================================
--- Var_Size_SArgument_T.cpp	(revision 75608)
+++ Var_Size_SArgument_T.cpp	(working copy)
@@ -73,6 +73,9 @@
 CORBA::Boolean
 TAO::Out_Var_Size_SArgument_T<S,Insert_Policy>::marshal (TAO_OutputCDR &cdr)
 {
+  if (NULL == this->x_.ptr())
+    ACE_THROW_RETURN (::CORBA::BAD_PARAM(0, CORBA::COMPLETED_MAYBE), false); 
+
   return cdr << this->x_.in ();
 }