From 8eb1dd81f53db215cf73319dc485f120addefe2d Mon Sep 17 00:00:00 2001
From: Augustin Degomme <degomme@idpann.imag.fr>
Date: Mon, 17 Jun 2013 18:13:26 +0200
Subject: [PATCH 1/1] if we send 0 data, don't bother with subtypes

---
 src/smpi/smpi_mpi_dt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/smpi/smpi_mpi_dt.c b/src/smpi/smpi_mpi_dt.c
index b233c413d4..22be36c59c 100644
--- a/src/smpi/smpi_mpi_dt.c
+++ b/src/smpi/smpi_mpi_dt.c
@@ -286,7 +286,7 @@ void smpi_datatype_create(MPI_Datatype* new_type, int size,int lb, int ub, int h
                           void *struct_type, int flags){
   MPI_Datatype new_t= xbt_new(s_smpi_mpi_datatype_t,1);
   new_t->size = size;
-  new_t->has_subtype = has_subtype;
+  new_t->has_subtype = size>0? has_subtype:0;
   new_t->lb = lb;
   new_t->ub = ub;
   new_t->flags = flags;
-- 
2.20.1