| // 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. |
| |
| fn a<'a, 'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) where 'b: 'a + 'c { |
| // Note: this is legal because of the `'b:'a` declaration. |
| *x = *y; |
| *z = *y; |
| } |
| |
| fn b<'a, 'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) { |
| // Illegal now because there is no `'b:'a` declaration. |
| *x = *y; //~ ERROR E0623 |
| *z = *y; //~ ERROR E0623 |
| } |
| |
| fn c<'a,'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) { |
| // Here we try to call `foo` but do not know that `'a` and `'b` are |
| // related as required. |
| a(x, y, z); //~ ERROR 26:7: 26:8: lifetime mismatch [E0623] |
| } |
| |
| fn d() { |
| // 'a and 'b are early bound in the function `a` because they appear |
| // inconstraints: |
| let _: fn(&mut &isize, &mut &isize, &mut &isize) = a; //~ ERROR mismatched types |
| } |
| |
| fn e() { |
| // 'a and 'b are late bound in the function `b` because there are |
| // no constraints: |
| let _: fn(&mut &isize, &mut &isize, &mut &isize) = b; |
| } |
| |
| fn main() { } |
