dbf994bbaf
associated machinery. Future such attempts should go through lints anyhow. There is a fair amount of fallout in the compile-fail tests, as WF checking now occurs earlier in the process.
38 lines
964 B
Rust
38 lines
964 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.
|
|
|
|
// Regression test for issue #22246 -- we should be able to deduce
|
|
// that `&'a B::Owned` implies that `B::Owned : 'a`.
|
|
|
|
// pretty-expanded FIXME #23616
|
|
|
|
#![allow(dead_code)]
|
|
|
|
use std::ops::Deref;
|
|
|
|
pub trait ToOwned: Sized {
|
|
type Owned: Borrow<Self>;
|
|
fn to_owned(&self) -> Self::Owned;
|
|
}
|
|
|
|
pub trait Borrow<Borrowed> {
|
|
fn borrow(&self) -> &Borrowed;
|
|
}
|
|
|
|
pub struct Foo<B:ToOwned> {
|
|
owned: B::Owned
|
|
}
|
|
|
|
fn foo<B:ToOwned>(this: &Foo<B>) -> &B {
|
|
this.owned.borrow()
|
|
}
|
|
|
|
fn main() { }
|