BOOST_TEST_TRAIT_SAME(decltype(traits::metadata(static_cast<None&>(none))),
null_type&);
BOOST_TEST_TRAIT_SAME(decltype(traits::metadata(static_cast<const None&>(none))),
- const null_type&);
+ null_type&);
Const c;
BOOST_TEST_EQ(traits::metadata(c), 0);