| // 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 that the compiler checks that arbitrary region bounds declared |
| // in the trait must be satisfied on the impl. Issue #20890. |
| |
| trait Foo<'a> { |
| type Value: 'a; |
| fn dummy(&'a self) { } |
| } |
| |
| impl<'a> Foo<'a> for &'a i16 { |
| // OK. |
| type Value = &'a i32; |
| } |
| |
| impl<'a> Foo<'static> for &'a i32 { |
| //~^ ERROR cannot infer |
| type Value = &'a i32; |
| } |
| |
| impl<'a,'b> Foo<'b> for &'a i64 { |
| //~^ ERROR cannot infer |
| type Value = &'a i32; |
| } |
| |
| fn main() { } |