| // 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. |
| |
| // Test an edge case in region inference: the lifetime of the borrow |
| // of `*x` must be extended to at least 'a. |
| |
| // pretty-expanded FIXME #23616 |
| |
| fn foo<'a,'b>(x: &'a &'b mut isize) -> &'a isize { |
| let y = &*x; // should be inferred to have type &'a &'b mut isize... |
| |
| // ...because if we inferred, say, &'x &'b mut isize where 'x <= 'a, |
| // this reborrow would be illegal: |
| &**y |
| } |
| |
| pub fn main() { |
| /* Just want to know that it compiles. */ |
| } |
