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-rw-r--r--boost/type_traits/type_identity.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/boost/type_traits/type_identity.hpp b/boost/type_traits/type_identity.hpp
index 73cb3f3f9e..4a03a13a39 100644
--- a/boost/type_traits/type_identity.hpp
+++ b/boost/type_traits/type_identity.hpp
@@ -9,6 +9,8 @@
// http://www.boost.org/LICENSE_1_0.txt
//
+#include <boost/config.hpp>
+
namespace boost
{