From cec49bceba2427c45f184c27838ae3715344ca3d Mon Sep 17 00:00:00 2001
From: Arnaud Giersch <arnaud.giersch@univ-fcomte.fr>
Date: Thu, 4 Jul 2019 14:56:55 +0200
Subject: [PATCH 1/1] Just keep the same exception_ptr (no copy).

See https://stackoverflow.com/q/37249698 or https://stackoverflow.com/q/30580128

Let's see if it helps for issue simgrid/simgrid#27.
---
 src/kernel/activity/CommImpl.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/kernel/activity/CommImpl.cpp b/src/kernel/activity/CommImpl.cpp
index 4020b9c22f..8d6c7e37bd 100644
--- a/src/kernel/activity/CommImpl.cpp
+++ b/src/kernel/activity/CommImpl.cpp
@@ -692,8 +692,7 @@ void CommImpl::finish()
       try {
         std::rethrow_exception(simcall->issuer->exception_);
       } catch (simgrid::Exception& e) {
-        e.value                     = rank;
-        simcall->issuer->exception_ = std::make_exception_ptr(e);
+        e.value = rank;
       }
     }
 
-- 
2.20.1