New upstream version 1.27.2+dfsg1

[rustc.git] / src / test / ui / rfc-2093-infer-outlives / explicit-impl.rs

// 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.

// ignore-tidy-linelength

// Needs an explicit where clause stating outlives condition. (RFC 2093)

trait MakeRef<'a> {
    type Type;
}

impl<'a, T> MakeRef<'a> for Vec<T>
  where T: 'a
{
    type Type = &'a T;
}

// Type T needs to outlive lifetime 'a, as stated in impl.
struct Foo<'a, T> {
    foo: <Vec<T> as MakeRef<'a>>::Type //~ Error the parameter type `T` may not live long enough [E0309]
}

fn main() { }