id summary reporter owner description type status milestone component version severity resolution keywords cc 11704 Can't pass a generic lambda as an argument to a parser Matheus Izvekov Joel de Guzman "This example will fail to compile: auto f = [](qi::unused_type, auto &ctx) { return true; }; qi::rule r{ qi::eps(f) }; Changing the lambda to a non-generic one will make this work (by passing the context type explicitly)" Bugs new To Be Determined spirit Boost 1.59.0 Problem