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1 | // Copyright 2016 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 | use std::fmt; | |
12 | ||
13 | #[deny(warnings)] trait Foo { fn foo(&self) -> (Self, Self); } | |
14 | //~^ ERROR the trait bound `Self: std::marker::Sized` is not satisfied | |
15 | //~| WARNING hard error | |
16 | ||
17 | impl<T: Copy> Foo for T { | |
18 | fn foo(&self) -> (Self, Self) { | |
19 | (*self, *self) | |
20 | } | |
21 | } | |
22 | ||
23 | #[deny(warnings)] | |
24 | fn main() { | |
25 | assert_eq!((11).foo(), (11, 11)); | |
26 | ||
27 | let junk: Box<fmt::Debug+Sized> = Box::new(42); | |
28 | //~^ ERROR the trait cannot require that `Self : Sized` | |
29 | //~| WARNING hard error | |
30 | let f = format!("{:?}", junk); | |
31 | assert_eq!(f, "42"); | |
32 | } |