| // Copyright 2015 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 invariant_id<'a,'b>(t: &'b mut &'static ()) -> &'b mut &'a () |
| where 'a: 'static { t } |
| fn static_id<'a>(t: &'a ()) -> &'static () |
| where 'a: 'static { t } |
| fn static_id_indirect<'a,'b>(t: &'a ()) -> &'static () |
| where 'a: 'b, 'b: 'static { t } |
| fn ref_id<'a>(t: &'a ()) -> &'a () where 'static: 'a { t } |
| |
| static UNIT: () = (); |
| |
| fn main() |
| { |
| let mut val : &'static () = &UNIT; |
| invariant_id(&mut val); |
| static_id(val); |
| static_id_indirect(val); |
| ref_id(val); |
| } |
