diff --git a/contrib/other-builds/moses2/Search/CubePruning/Stack.cpp b/contrib/other-builds/moses2/Search/CubePruning/Stack.cpp
index 38aee040b..9475281fa 100644
--- a/contrib/other-builds/moses2/Search/CubePruning/Stack.cpp
+++ b/contrib/other-builds/moses2/Search/CubePruning/Stack.cpp
@@ -82,12 +82,14 @@ void MiniStack::SortAndPruneHypos(const Manager &mgr) const
 ///////////////////////////////////////////////////////////////
 Stack::Stack(const Manager &mgr)
 :m_alloc(mgr.GetPool())
-,m_coll(m_alloc)
 {
+  MemPool &pool = mgr.GetPool();
+  m_coll = new (pool.Allocate<Coll>()) Coll(m_alloc);
 }
 
 Stack::~Stack()
 {
+  //delete m_coll;
 }
 
 void Stack::Add(const Hypothesis *hypo, Recycler<Hypothesis*> &hypoRecycle)
@@ -137,7 +139,7 @@ StackAdd Stack::Add(const Hypothesis *hypo)
 std::vector<const Hypothesis*> Stack::GetBestHypos(size_t num) const
 {
   std::vector<const Hypothesis*> ret;
-  BOOST_FOREACH(const Coll::value_type &val, m_coll) {
+  BOOST_FOREACH(const Coll::value_type &val, *m_coll) {
 		const MiniStack::_HCType &hypos = val.second.GetColl();
 		ret.insert(ret.end(), hypos.begin(), hypos.end());
   }
@@ -156,7 +158,7 @@ std::vector<const Hypothesis*> Stack::GetBestHypos(size_t num) const
 size_t Stack::GetHypoSize() const
 {
 	size_t ret = 0;
-	BOOST_FOREACH(const Coll::value_type &val, m_coll) {
+	BOOST_FOREACH(const Coll::value_type &val, *m_coll) {
 		const MiniStack::_HCType &hypos = val.second.GetColl();
 		ret += hypos.size();
 	}
@@ -177,7 +179,7 @@ MiniStack &Stack::GetMiniStack(const HypoCoverage &key)
 	}
 	return *ret;
 	*/
-	return m_coll[key];
+  return (*m_coll)[key];
 }
 
 }
diff --git a/contrib/other-builds/moses2/Search/CubePruning/Stack.h b/contrib/other-builds/moses2/Search/CubePruning/Stack.h
index 8f8585e3c..3ab887e6c 100644
--- a/contrib/other-builds/moses2/Search/CubePruning/Stack.h
+++ b/contrib/other-builds/moses2/Search/CubePruning/Stack.h
@@ -73,19 +73,19 @@ public:
 	size_t GetHypoSize() const;
 
 	Coll &GetColl()
-	{ return m_coll; }
+	{ return *m_coll; }
 
 	void Add(const Hypothesis *hypo, Recycler<Hypothesis*> &hypoRecycle);
 
 	std::vector<const Hypothesis*> GetBestHypos(size_t num) const;
 	void Clear()
 	{
-		m_coll.clear();
+		m_coll->clear();
 	}
 
 protected:
 	MemPoolAllocator< std::pair<HypoCoverage const, MiniStack> > m_alloc;
-	Coll m_coll;
+	Coll *m_coll;
 
 	StackAdd Add(const Hypothesis *hypo);