27 lines
823 B
Rust
27 lines
823 B
Rust
// Copyright 2014 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.
|
|
|
|
pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
|
|
pub trait Bar: Foo { }
|
|
impl<T: Foo> Bar for T { }
|
|
|
|
pub struct Thing;
|
|
impl Foo for Thing {
|
|
fn foo<T>(&self, _: &T) {}
|
|
}
|
|
|
|
#[inline(never)] fn foo(b: &Bar) { b.foo(&0u) }
|
|
|
|
fn main() {
|
|
let mut thing = Thing;
|
|
let test: &Bar = &mut thing; //~ ERROR cannot convert to a trait object
|
|
foo(test);
|
|
}
|