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1 | // Copyright 2015 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. | |
4 | // | |
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. | |
10 | ||
11 | // A method's receiver must be well-formed, even if it has late-bound regions. | |
12 | // Because of this, a method's substs being well-formed does not imply that | |
13 | // the method's implied bounds are met. | |
14 | ||
15 | struct Foo<'b>(Option<&'b ()>); | |
16 | ||
17 | trait Bar<'b> { | |
18 | fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32; | |
19 | } | |
20 | ||
21 | impl<'b> Bar<'b> for Foo<'b> { | |
22 | fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32 { u } | |
23 | } | |
24 | ||
25 | fn main() { | |
26 | let f = Foo(None); | |
27 | let f2 = f; | |
28 | let dangling = { | |
29 | let pointer = Box::new(42); | |
30 | f2.xmute(&pointer) //~ ERROR `pointer` does not live long enough | |
31 | }; | |
32 | println!("{}", dangling); | |
33 | } |