| // 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. |
| |
| // This test checks that the error messages you get for this example |
| // at least mention `'a` and `'static`. The precise messages can drift |
| // over time, but this test used to exhibit some pretty bogus messages |
| // that were not remotely helpful. |
| |
| // error-pattern:the lifetime 'a |
| // error-pattern:the static lifetime |
| |
| struct Invariant<'a>(Option<&'a mut &'a mut ()>); |
| |
| fn mk_static() -> Invariant<'static> { Invariant(None) } |
| |
| fn unify<'a>(x: Option<Invariant<'a>>, f: fn(Invariant<'a>)) { |
| let bad = if x.is_some() { |
| x.unwrap() |
| } else { |
| mk_static() |
| }; |
| f(bad); |
| } |
| |
| fn main() {} |
