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28 lines
662 B
Rust
28 lines
662 B
Rust
// run-pass
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#![allow(non_upper_case_globals)]
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// Tests the range assertion wraparound case when reading discriminants.
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#[repr(u8)]
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#[derive(Copy, Clone)]
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enum Eu { Lu = 0, Hu = 255 }
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static CLu: Eu = Eu::Lu;
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static CHu: Eu = Eu::Hu;
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#[repr(i8)]
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#[derive(Copy, Clone)]
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enum Es { Ls = -128, Hs = 127 }
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static CLs: Es = Es::Ls;
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static CHs: Es = Es::Hs;
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pub fn main() {
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assert_eq!((Eu::Hu as u8).wrapping_add(1), Eu::Lu as u8);
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assert_eq!((Es::Hs as i8).wrapping_add(1), Es::Ls as i8);
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assert_eq!(CLu as u8, Eu::Lu as u8);
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assert_eq!(CHu as u8, Eu::Hu as u8);
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assert_eq!(CLs as i8, Es::Ls as i8);
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assert_eq!(CHs as i8, Es::Hs as i8);
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}
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