From 8961af09af49ac83a8cadf9dc2f7677a56edf127 Mon Sep 17 00:00:00 2001
From: degomme <augustin.degomme@unibas.ch>
Date: Wed, 5 Apr 2017 17:05:22 +0200
Subject: [PATCH] Potential crash --

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

diff --git a/src/smpi/smpi_win.cpp b/src/smpi/smpi_win.cpp
index 3653491ccb..e2d6b5f3a8 100644
--- a/src/smpi/smpi_win.cpp
+++ b/src/smpi/smpi_win.cpp
@@ -679,7 +679,7 @@ int Win::finish_comms(int rank){
     std::vector<MPI_Request>* myreqqs = new std::vector<MPI_Request>();
     std::vector<MPI_Request>::iterator iter = reqqs->begin();
     while (iter != reqqs->end()){
-      if(((*iter)->src() == rank) || ((*iter)->dst() == rank)){
+      if(((*iter)!=MPI_REQUEST_NULL) && (((*iter)->src() == rank) || ((*iter)->dst() == rank))){
           myreqqs->push_back(*iter);
           iter = reqqs->erase(iter);
           size++;
-- 
2.20.1