use util::StringStream

1 files changed, 4 insertions, 2 deletions

diff --git a/moses/FeatureVector.cpp b/moses/FeatureVector.cpp
index 4195c5636..344b1a8f8 100644
--- a/moses/FeatureVector.cpp
+++ b/moses/FeatureVector.cpp
@@ -29,6 +29,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "FeatureVector.h"
 #include "util/string_piece_hash.hh"
+#include "util/string_stream.hh"
 
 using namespace std;
 
@@ -204,9 +205,10 @@ void FVector::save(const string& filename) const
 {
   ofstream out(filename.c_str());
   if (!out) {
-    ostringstream msg;
+    std::string str;
+    util::StringStream msg(str);
     msg << "Unable to open " << filename;
-    throw runtime_error(msg.str());
+    throw runtime_error(str);
   }
   write(out);
   out.close();