1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 fn a<'a, 'b:'a>(x: &mut &'a isize, y: &mut &'b isize) {
12 // Note: this is legal because of the `'b:'a` declaration.
16 fn b<'a, 'b>(x: &mut &'a isize, y: &mut &'b isize) {
17 // Illegal now because there is no `'b:'a` declaration.
18 *x = *y; //~ ERROR E0623
21 fn c<'a,'b>(x: &mut &'a isize, y: &mut &'b isize) {
22 // Here we try to call `foo` but do not know that `'a` and `'b` are
23 // related as required.
24 a(x, y); //~ ERROR 24:7: 24:8: lifetime mismatch [E0623]
28 // 'a and 'b are early bound in the function `a` because they appear
30 let _: fn(&mut &isize, &mut &isize) = a; //~ ERROR mismatched types
34 // 'a and 'b are late bound in the function `b` because there are
36 let _: fn(&mut &isize, &mut &isize) = b;