blob: 86b7a8c89184abcbcd51e4bfe711360c61694f68 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
// Copyright 2012-2013-2014 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.
// Test that cross-borrowing (implicitly converting from `Box<T>` to `&T`) is
// forbidden when `T` is a trait.
#![feature(box_syntax)]
struct Foo;
trait Trait {}
impl Trait for Foo {}
pub fn main() {
let x: Box<Trait> = box Foo;
let _y: &Trait = x; //~ ERROR mismatched types
//~| expected `&Trait`
//~| found `Box<Trait>`
//~| expected &-ptr
//~| found box
}
|
