1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Tests "transitivity" of super-builtin-kinds on traits. Here, if
12 // we have a Foo, we know we have a Bar, and if we have a Bar, we
13 // know we have a Send. So if we have a Foo we should know we have
14 // a Send. Basically this just makes sure rustc is using
15 // each_bound_trait_and_supertraits in type_contents correctly.
17 use std::sync::mpsc::{channel, Sender};
22 impl <T: Send> Foo for T { }
23 impl <T: Send> Bar for T { }
25 fn foo<T: Foo>(val: T, chan: Sender<T>) {
26 chan.send(val).unwrap();
30 let (tx, rx) = channel();
32 assert!(rx.recv().unwrap() == 31337i);