The MPI spec says that we are supposed to return an empty status in

the (count==0) case.

This commit was SVN r27132.

ompi/mpi/c/testany.c

@@ -72,6 +72,7 @@ int MPI_Testany(int count, MPI_Request requests[], int *indx, int *completed, MP
     if (OPAL_UNLIKELY(0 == count)) {
         *completed = true;
         *indx = MPI_UNDEFINED;
+        *status = ompi_status_empty;
         return MPI_SUCCESS;
     }
 

ompi/mpi/c/waitany.c

@@ -71,6 +71,7 @@ int MPI_Waitany(int count, MPI_Request requests[], int *indx, MPI_Status *status
 
     if (OPAL_UNLIKELY(0 == count)) {
         *indx = MPI_UNDEFINED;
+        *status = ompi_status_empty;
         return MPI_SUCCESS;
     }