44 lines
954 B
Rust
44 lines
954 B
Rust
// 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 A : Foo {
|
|
fn f() -> int { 10 }
|
|
}
|
|
|
|
impl A : Bar {
|
|
fn g() -> int { 20 }
|
|
}
|
|
|
|
fn main() {
|
|
let a = &A { x: 3 };
|
|
let afoo = a as &Foo;
|
|
let abar = a as &Bar;
|
|
assert afoo.f() == 10;
|
|
assert abar.g() == 20;
|
|
assert abar.f() == 10;
|
|
}
|
|
|