Revert "use std::unordered_set instead of boost::unordered_set. Segfault on boost 1.65.1"

This reverts commit d3c2c0bda54cd8992742953d68dc06d86284d196.

2 files changed, 1 insertions, 4 deletions

diff --git a/moses2/HypothesisColl.cpp b/moses2/HypothesisColl.cpp
index 39acedced..18046bd4c 100644
--- a/moses2/HypothesisColl.cpp
+++ b/moses2/HypothesisColl.cpp
@@ -254,8 +254,6 @@ void HypothesisColl::Delete(const HypothesisBase *hypo)
   //cerr << "hypo=" << hypo << " " << m_coll.size() << endl;
 
   size_t erased = m_coll.erase(hypo);
-  //cerr << "erased=" << erased << " " << m_coll.size() << endl;
-
   UTIL_THROW_IF2(erased != 1, "couldn't erase hypo " << hypo);
 }
 
diff --git a/moses2/HypothesisColl.h b/moses2/HypothesisColl.h
index f00a2efb0..63a8551ba 100644
--- a/moses2/HypothesisColl.h
+++ b/moses2/HypothesisColl.h
@@ -5,7 +5,6 @@
  *      Author: hieu
  */
 #pragma once
-#include <unordered_set>
 #include <boost/unordered_set.hpp>
 #include "HypothesisBase.h"
 #include "MemPoolAllocator.h"
@@ -54,7 +53,7 @@ public:
   std::string Debug(const System &system) const;
 
 protected:
-  typedef std::unordered_set<const HypothesisBase*,
+  typedef boost::unordered_set<const HypothesisBase*,
           UnorderedComparer<HypothesisBase>, UnorderedComparer<HypothesisBase>,
           MemPoolAllocator<const HypothesisBase*> > _HCType;