| // 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. |
| |
| // Tests that you can use a fn lifetime parameter as part of |
| // the value for a type parameter in a bound. |
| |
| trait GetRef<'a, T> { |
| fn get(&self) -> &'a T; |
| } |
| |
| struct Box<'a, T:'a> { |
| t: &'a T |
| } |
| |
| impl<'a,T:Clone> GetRef<'a,T> for Box<'a,T> { |
| fn get(&self) -> &'a T { |
| self.t |
| } |
| } |
| |
| fn get<'a,'b,G:GetRef<'a, isize>>(g1: G, b: &'b isize) -> &'b isize { |
| g1.get() |
| //~^ ERROR cannot infer an appropriate lifetime for automatic coercion due to |
| //~| ERROR mismatched types |
| //~| expected `&'b isize` |
| //~| found `&'a isize` |
| //~| lifetime mismatch |
| } |
| |
| fn main() { |
| } |