id summary reporter owner description type status milestone component version severity resolution keywords cc 1525 function_traits::arity should be unsigned type Daniel Frey John Maddock function_traits::arity is currently 'int', which leads to warnings when comparing it with unsigned types. It seems more logical to me to use 'size_t' (or at least 'unsigned') for it. John? Bugs closed Boost 1.36.0 type_traits Boost 1.34.1 Problem fixed arity