// Copyright 2012 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // error-pattern:missing method `eat` trait animal { fn eat(&self); } struct cat { meows: uint, } impl animal for cat { } fn cat(in_x : uint) -> cat { cat { meows: in_x } } fn main() { let nyan = cat(0u); }