--- branches/development/src/optimization/Constraint.cpp	2013/02/20 20:38:04	1852
+++ branches/development/src/optimization/Constraint.cpp	2013/03/06 16:24:08	1853
@@ -19,6 +19,7 @@
 
 #include "optimization/Constraint.hpp"
 #include "utils/simError.h"
+#include <cstdio>
 
 namespace QuantLib {