From eb01bd0ef2c8f4954c1ebeffaf7c79137d647962 Mon Sep 17 00:00:00 2001
From: Pete Peterson <petersonpf@ornl.gov>
Date: Thu, 16 Nov 2017 08:30:49 -0500
Subject: [PATCH] Fix gcc 4.8 issue

---
 Framework/DataObjects/src/EventList.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Framework/DataObjects/src/EventList.cpp b/Framework/DataObjects/src/EventList.cpp
index 1fc73455360..d3ec753e378 100644
--- a/Framework/DataObjects/src/EventList.cpp
+++ b/Framework/DataObjects/src/EventList.cpp
@@ -1149,7 +1149,7 @@ void EventList::sortPulseTimeTOFDelta(const Types::Core::DateAndTime &start,
   // Avoid sorting from multiple threads
   std::lock_guard<std::mutex> _lock(m_sortMutex);
 
-  std::function<bool(TofEvent &, TofEvent &)> comparator =
+  std::function<bool(const TofEvent &, const TofEvent &)> comparator =
       comparePulseTimeTOFDelta(start, seconds);
 
   switch (eventType) {
-- 
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