id summary reporter owner description type status milestone component version severity resolution keywords cc 4207 missing result_type in predicates Maxim Yanchenko Pavol Droba "e.g. `boost::is_equal` etc. in `boost/algorithm/string/compare.hpp` due to this, it's impossible to use them with `boost::bind` etc that require `result_type` to be declared. Fix: add ""`typedef bool result_type;`"" everywhere." Bugs closed Boost 1.43.0 string_algo Boost 1.44.0 Problem duplicate