1 // Copyright 2013 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.
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.
11 // Tests the range assertion wraparound case when reading discriminants.
14 #[derive(Copy, Clone)]
15 enum Eu { Lu = 0, Hu = 255 }
17 static CLu: Eu = Eu::Lu;
18 static CHu: Eu = Eu::Hu;
21 #[derive(Copy, Clone)]
22 enum Es { Ls = -128, Hs = 127 }
24 static CLs: Es = Es::Ls;
25 static CHs: Es = Es::Hs;
28 assert_eq!((Eu::Hu as u8).wrapping_add(1), Eu::Lu as u8);
29 assert_eq!((Es::Hs as i8).wrapping_add(1), Es::Ls as i8);
30 assert_eq!(CLu as u8, Eu::Lu as u8);
31 assert_eq!(CHu as u8, Eu::Hu as u8);
32 assert_eq!(CLs as i8, Es::Ls as i8);
33 assert_eq!(CHs as i8, Es::Hs as i8);