1 // Copyright 2016 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.
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.
13 #![deny(single_use_lifetimes)]
15 #![allow(unused_variables)]
17 // Test that we DO NOT warn when lifetime name is used only
18 // once in a fn return type -- using `'_` is not legal there,
19 // as it must refer back to an argument.
21 // (Normally, using `'static` would be preferred, but there are
22 // times when that is not what you want.)
26 fn b<'a>() -> &'a u32 { // OK: used only in return type