src/test/compile-fail/regions-early-bound-error.rs

   1 // Copyright 2012 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.
   4 //
   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.
  10
  11 // Tests that you can use a fn lifetime parameter as part of
  12 // the value for a type parameter in a bound.
  13
  14 trait GetRef<'a, T> {
  15     fn get(&self) -> &'a T;
  16 }
  17
  18 struct Box<'a, T:'a> {
  19     t: &'a T
  20 }
  21
  22 impl<'a,T:Clone> GetRef<'a,T> for Box<'a,T> {
  23     fn get(&self) -> &'a T {
  24         self.t
  25     }
  26 }
  27
  28 fn get<'a,'b,G:GetRef<'a, isize>>(g1: G, b: &'b isize) -> &'b isize {
  29     g1.get()
  30     //~^ ERROR mismatched types
  31 }
  32
  33 fn main() {
  34 }