--- branches/development/src/optimization/Constraint.cpp	2012/06/05 18:02:44	1741
+++ trunk/src/optimization/Constraint.cpp	2012/08/29 20:17:07	1788
@@ -19,6 +19,7 @@
 
 #include "optimization/Constraint.hpp"
 #include "utils/simError.h"
+#include <cstdio>
 
 namespace QuantLib {