| // 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. |
| |
| // Test various cases where the defaults should lead to errors being |
| // reported. |
| |
| #![allow(dead_code)] |
| |
| trait SomeTrait { |
| fn dummy(&self) { } |
| } |
| |
| struct SomeStruct<'a> { |
| r: Box<SomeTrait+'a> |
| } |
| |
| fn load(ss: &mut SomeStruct) -> Box<SomeTrait> { |
| // `Box<SomeTrait>` defaults to a `'static` bound, so this return |
| // is illegal. |
| |
| ss.r //~ ERROR explicit lifetime required in the type of `ss` [E0621] |
| } |
| |
| fn store(ss: &mut SomeStruct, b: Box<SomeTrait>) { |
| // No error: b is bounded by 'static which outlives the |
| // (anonymous) lifetime on the struct. |
| |
| ss.r = b; |
| } |
| |
| fn store1<'b>(ss: &mut SomeStruct, b: Box<SomeTrait+'b>) { |
| // Here we override the lifetimes explicitly, and so naturally we get an error. |
| |
| ss.r = b; //~ ERROR 41:12: 41:13: explicit lifetime required in the type of `ss` [E0621] |
| } |
| |
| fn main() { |
| } |