From: Augustin Degomme <degomme@idpann.imag.fr>
Date: Mon, 17 Jun 2013 16:13:26 +0000 (+0200)
Subject: if we send 0 data, don't bother with subtypes
X-Git-Tag: v3_9_90~253
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/8eb1dd81f53db215cf73319dc485f120addefe2d?hp=964e31805a6409921f1e3a2cd497c15898b4b62b

if we send 0 data, don't bother with subtypes
---

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;