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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/structs-enums/small-enum-range-edge.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/structs-enums/small-enum-range-edge.rs')
-rw-r--r-- | tests/ui/structs-enums/small-enum-range-edge.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/structs-enums/small-enum-range-edge.rs b/tests/ui/structs-enums/small-enum-range-edge.rs new file mode 100644 index 000000000..306129479 --- /dev/null +++ b/tests/ui/structs-enums/small-enum-range-edge.rs @@ -0,0 +1,27 @@ +// run-pass +#![allow(non_upper_case_globals)] + +// Tests the range assertion wraparound case when reading discriminants. + +#[repr(u8)] +#[derive(Copy, Clone)] +enum Eu { Lu = 0, Hu = 255 } + +static CLu: Eu = Eu::Lu; +static CHu: Eu = Eu::Hu; + +#[repr(i8)] +#[derive(Copy, Clone)] +enum Es { Ls = -128, Hs = 127 } + +static CLs: Es = Es::Ls; +static CHs: Es = Es::Hs; + +pub fn main() { + assert_eq!((Eu::Hu as u8).wrapping_add(1), Eu::Lu as u8); + assert_eq!((Es::Hs as i8).wrapping_add(1), Es::Ls as i8); + assert_eq!(CLu as u8, Eu::Lu as u8); + assert_eq!(CHu as u8, Eu::Hu as u8); + assert_eq!(CLs as i8, Es::Ls as i8); + assert_eq!(CHs as i8, Es::Hs as i8); +} |