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// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// xfail-test
// Testing that supertrait methods can be called on subtrait object types
// It's not clear yet that we want this
trait Foo {
fn f() -> int;
}
trait Bar : Foo {
fn g() -> int;
}
struct A {
x: int
}
impl Foo for A {
fn f() -> int { 10 }
}
impl Bar for A {
fn g() -> int { 20 }
}
pub fn main() {
let a = &A { x: 3 };
let afoo = a as &Foo;
let abar = a as &Bar;
assert_eq!(afoo.f(), 10);
assert_eq!(abar.g(), 20);
assert_eq!(abar.f(), 10);
}
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