blob: 014b0c1e80e71467da8875a63f55fac28f1bd8dd [file] [log] [blame]
// 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.
// Test a "pass-through" object-lifetime-default that produces errors.
#![allow(dead_code)]
trait SomeTrait {
fn dummy(&self) { }
}
struct MyBox<T:?Sized> {
r: Box<T>
}
fn deref<T>(ss: &T) -> T {
// produces the type of a deref without worrying about whether a
// move out would actually be legal
loop { }
}
fn load0(ss: &MyBox<SomeTrait>) -> MyBox<SomeTrait> {
deref(ss)
}
fn load1<'a,'b>(a: &'a MyBox<SomeTrait>,
b: &'b MyBox<SomeTrait>)
-> &'b MyBox<SomeTrait>
{
a //~ ERROR E0312
}
fn load2<'a>(ss: &MyBox<SomeTrait+'a>) -> MyBox<SomeTrait+'a> {
load0(ss) //~ ERROR mismatched types
}
fn main() {
}