boostorg/xpressive — pull request #1 by pmachata (2014-05-20 22:36:29+00:00)
Title: Drop unused typedef in boost::xpressive::detail::make_assert_word

This takes care of a warning that GCC post 4.8 emits. The typedef indeed isn't used in the function and doesn't seem to serve a function (sometimes these typedefs are there in lieu of static asserts--this is not the case).