43 lines
984 B
Rust
43 lines
984 B
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Testing that supertrait methods can be called on subtrait object types
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// pretty-expanded FIXME #23616
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trait Foo {
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fn f(&self) -> isize;
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}
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trait Bar : Foo {
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fn g(&self) -> isize;
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}
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struct A {
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x: isize
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}
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impl Foo for A {
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fn f(&self) -> isize { 10 }
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}
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impl Bar for A {
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fn g(&self) -> isize { 20 }
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}
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pub fn main() {
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let a = &A { x: 3 };
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let afoo = a as &Foo;
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let abar = a as &Bar;
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assert_eq!(afoo.f(), 10);
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assert_eq!(abar.g(), 20);
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assert_eq!(abar.f(), 10);
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}
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