| // 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. |
| |
| // A method's receiver must be well-formed, even if it has late-bound regions. |
| // Because of this, a method's substs being well-formed does not imply that |
| // the method's implied bounds are met. |
| |
| struct Foo<'b>(Option<&'b ()>); |
| |
| trait Bar<'b> { |
| fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32; |
| } |
| |
| impl<'b> Bar<'b> for Foo<'b> { |
| fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32 { u } |
| } |
| |
| fn main() { |
| let f = Foo(None); |
| let f2 = f; |
| let dangling = { |
| let pointer = Box::new(42); |
| f2.xmute(&pointer) //~ ERROR `pointer` does not live long enough |
| }; |
| println!("{}", dangling); |
| } |
