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-rw-r--r--boost/spirit/home/x3/binary/binary.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/binary/binary.hpp b/boost/spirit/home/x3/binary/binary.hpp
index b3d3a79473..551e5b3865 100644
--- a/boost/spirit/home/x3/binary/binary.hpp
+++ b/boost/spirit/home/x3/binary/binary.hpp
@@ -30,6 +30,7 @@ namespace boost { namespace spirit { namespace x3
: parser<binary_lit_parser<V, T, endian, bits> >
{
static bool const has_attribute = false;
+ typedef unused_type attribute_type;
binary_lit_parser(V n_)
: n(n_) {}