does not matter for <int.int> but we switch names as the first

parameter is the global id. Additionally omit the second parameter as
it is not needed.

[[Imported from SVN: r1062]]

istl/owneroverlapcopy.hh

@@ -168,7 +168,7 @@ namespace Dune {
    *
    * set up communication from known distribution with owner/overlap/copy semantics
    */
-  template <class GlobalIdType, class LocalIdType>
+  template <class GlobalIdType, class LocalIdType=int>
   class OwnerOverlapCopyCommunication
   {
     // used types
@@ -435,6 +435,17 @@ namespace Dune {
         OwnerToAllInterfaceBuilt(false), OwnerOverlapToAllInterfaceBuilt(false), globalLookup_(0)
     {}
 
+    /**
+     * @brief Construct the communication without any indices using MPI_COMM_WORLD.
+     *
+     * The local index set and the remote indices have to be set up
+     * later on.
+     */
+    OwnerOverlapCopyCommunication ()
+      : cc(MPI_COMM_WORLD), pis(), ri(pis,pis,MPI_COMM_WORLD),
+        OwnerToAllInterfaceBuilt(false), OwnerOverlapToAllInterfaceBuilt(false), globalLookup_(0)
+    {}
+
     /**
      * @brief Constructor
      * @param indexinfo The set of IndexTripels describing the local and remote indices.

istl/paamg/test/parallelamgtest.cc

@@ -85,7 +85,7 @@ void testAmg(int N, int coarsenTarget)
   typedef Dune::BlockVector<VectorBlock> Vector;
   typedef int LocalId;
   typedef int GlobalId;
-  typedef Dune::OwnerOverlapCopyCommunication<LocalId,GlobalId> Communication;
+  typedef Dune::OwnerOverlapCopyCommunication<GlobalId> Communication;
   typedef Dune::OverlappingSchwarzOperator<BCRSMat,Vector,Vector,Communication> Operator;
   int n;