From fcfadc354514da7a4ea3c42165a65fe078a9651a Mon Sep 17 00:00:00 2001
From: Steven Hahn <hahnse@ornl.gov>
Date: Thu, 11 May 2017 07:09:48 -0400
Subject: [PATCH] add missing header.

---
 Framework/Kernel/inc/MantidKernel/MultiThreaded.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Framework/Kernel/inc/MantidKernel/MultiThreaded.h b/Framework/Kernel/inc/MantidKernel/MultiThreaded.h
index b9dbc25c164..559214a6373 100644
--- a/Framework/Kernel/inc/MantidKernel/MultiThreaded.h
+++ b/Framework/Kernel/inc/MantidKernel/MultiThreaded.h
@@ -3,6 +3,7 @@
 
 #include "MantidKernel/DataItem.h"
 
+#include <atomic>
 #include <mutex>
 
 namespace Mantid {
-- 
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