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-rw-r--r--boost/test/data/monomorphic/grid.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/boost/test/data/monomorphic/grid.hpp b/boost/test/data/monomorphic/grid.hpp
index 3e1b36abad..2cf66189a0 100644
--- a/boost/test/data/monomorphic/grid.hpp
+++ b/boost/test/data/monomorphic/grid.hpp
@@ -22,6 +22,8 @@
#include <boost/test/data/monomorphic/fwd.hpp>
#include <boost/test/data/monomorphic/sample_merge.hpp>
+#include <boost/mpl/identity.hpp>
+
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//