id summary reporter owner description type status milestone component version severity resolution keywords cc 5893 No ADL barrier on proto's tag types John Maddock Eric Niebler As discussed on the mailing list, there's no ADL barier on the proto tag types, which causes a clash (in my case) between boost::math::complement and proto::complement when both are found via ADL. Bugs closed To Be Determined proto Boost 1.47.0 Problem fixed