id summary reporter owner description type status milestone component version severity resolution keywords cc 5461 mistake document : boost::conditional include by boost/type_traits.hpp Akira Takahashi John Maddock "http://www.boost.org/doc/libs/1_46_1/libs/type_traits/doc/html/boost_typetraits/reference/common_type.html {{{ #include }}} should be {{{ Header: #include or #include }}} exists in the boost/type_traits.hpp header." Bugs closed To Be Determined type_traits Boost 1.46.1 Problem fixed