From 955c57f98cd086c6c126ddebf5ffc56ce390f676 Mon Sep 17 00:00:00 2001
From: Christian Heinrich <franz-christian.heinrich@inria.fr>
Date: Thu, 12 Apr 2018 11:04:55 +0200
Subject: [PATCH] [SMPI] Request: Be more verbose when wrong refcount occurs

---
 src/smpi/mpi/smpi_request.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/smpi/mpi/smpi_request.cpp b/src/smpi/mpi/smpi_request.cpp
index 07b5e952f6..180d9fd418 100644
--- a/src/smpi/mpi/smpi_request.cpp
+++ b/src/smpi/mpi/smpi_request.cpp
@@ -107,7 +107,10 @@ void Request::unref(MPI_Request* request)
 {
   if((*request) != MPI_REQUEST_NULL){
     (*request)->refcount_--;
-    if((*request)->refcount_<0) xbt_die("wrong refcount");
+    if((*request)->refcount_ < 0) {
+      (*request)->print_request("wrong refcount");
+      xbt_die("Whoops, wrong refcount");
+    }
     if((*request)->refcount_==0){
         Datatype::unref((*request)->old_type_);
         Comm::unref((*request)->comm_);
-- 
2.20.1