| // Copyright 2014 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. |
| |
| // Lifetime annotation needed because we have no arguments. |
| fn f() -> &isize { //~ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| // Lifetime annotation needed because we have two by-reference parameters. |
| fn g(_x: &isize, _y: &isize) -> &isize { //~ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| struct Foo<'a> { |
| x: &'a isize, |
| } |
| |
| // Lifetime annotation needed because we have two lifetimes: one as a parameter |
| // and one on the reference. |
| fn h(_x: &Foo) -> &isize { //~ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| fn i(_x: isize) -> &isize { //~ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| // Cases which used to work but now don't. |
| |
| type StaticStr = &'static str; // hides 'static |
| trait WithLifetime<'a> { |
| type Output; // can hide 'a |
| } |
| |
| // This worked because the type of the first argument contains |
| // 'static, although StaticStr doesn't even have parameters. |
| fn j(_x: StaticStr) -> &isize { //~ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| // This worked because the compiler resolved the argument type |
| // to <T as WithLifetime<'a>>::Output which has the hidden 'a. |
| fn k<'a, T: WithLifetime<'a>>(_x: T::Output) -> &isize { |
| //~^ ERROR missing lifetime specifier |
| panic!() |
| } |
| |
| fn main() {} |