| // Copyright 2012 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. |
| |
| // Issue #8624. Tests that reborrowing the contents of an `&'b mut` |
| // pointer which is backed by another `&'a mut` can only be done |
| // for `'a` (which must be a sublifetime of `'b`). |
| |
| fn copy_borrowed_ptr<'a, 'b>(p: &'a mut &'b mut isize) -> &'b mut isize { |
| &mut **p //~ ERROR 16:5: 16:13: lifetime mismatch [E0623] |
| } |
| |
| fn main() { |
| let mut x = 1; |
| let mut y = &mut x; |
| let z = copy_borrowed_ptr(&mut y); |
| *y += 1; |
| *z += 1; |
| } |
