//@ run-pass #![allow(dead_code)] #![allow(non_camel_case_types)] #![allow(non_snake_case)] trait connection { fn read(&self) -> isize; } trait connection_factory { fn create(&self) -> C; } type my_connection = (); type my_connection_factory = (); impl connection for () { fn read(&self) -> isize { 43 } } impl connection_factory for my_connection_factory { fn create(&self) -> my_connection { () } } pub fn main() { let factory = (); let connection: () = factory.create(); let result = connection.read(); assert_eq!(result, 43); }