From 290f87b813fd8318d3c6f42f3d739ab50af3ef5f Mon Sep 17 00:00:00 2001
From: redpony <redpony@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Tue, 28 Sep 2010 18:54:04 +0000
Subject: opt

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@660 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 utils/sparse_vector.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/utils/sparse_vector.h b/utils/sparse_vector.h
index c5e18b96..cce6c8a4 100644
--- a/utils/sparse_vector.h
+++ b/utils/sparse_vector.h
@@ -525,7 +525,7 @@ private:
     if (values_.find(0) != values_.end()) { ++it; --eff_size; }
     ar & eff_size;
     while (it != this->end()) {
-      const std::pair<std::string, T> wire_pair(FD::Convert(it->first), it->second);
+      const std::pair<const std::string&, const T&> wire_pair(FD::Convert(it->first), it->second);
       ar & wire_pair;
       ++it;
     }
@@ -545,6 +545,10 @@ private:
 #endif
 };
 
+#if HAVE_BOOST_ARCHIVE_TEXT_OARCHIVE_HPP
+BOOST_CLASS_TRACKING(SparseVector<double>,track_never)
+#endif
+
 template <class T>
 inline void swap(SparseVector<T> &a,SparseVector<T> &b) {
   a.swap(b);
-- 
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