30 lines
797 B
Rust
30 lines
797 B
Rust
|
// Copyright 2015 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.
|
||
|
|
|
||
|
|
trait Foo {
|
||
|
|
fn foo<T>(&self, val: T);
|
||
|
|
}
|
||
|
|
|
||
|
|
trait Bar: Foo { }
|
||
|
|
|
||
|
|
pub struct Thing;
|
||
|
|
|
||
|
|
impl Foo for Thing {
|
||
|
|
fn foo<T>(&self, val: T) { }
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Bar for Thing { }
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let mut thing = Thing;
|
||
|
|
let test: &mut Bar = &mut thing;
|
||
|
|
//~^ ERROR cannot convert to a trait object because trait `Bar` is not object-safe
|
||
|
|
}
|