src/test/compile-fail/regions-implied-bounds-projection-gap-4.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 // Along with the other tests in this series, illustrates the
  12 // "projection gap": in this test, we know that `T: 'x`, and that
  13 // is (naturally) enough to conclude that `T: 'x`.
  14
  15 #![feature(rustc_attrs)]
  16 #![allow(dead_code)]
  17 #![allow(unused_variables)]
  18
  19 trait Trait1<'x> {
  20     type Foo;
  21 }
  22
  23 // calling this fn should trigger a check that the type argument
  24 // supplied is well-formed.
  25 fn wf<T>() { }
  26
  27 fn func<'x, T:Trait1<'x>>(t: &'x T)
  28 {
  29     wf::<&'x T>();
  30 }
  31
  32 #[rustc_error]
  33 fn main() { } //~ ERROR compilation successful