rust/tests/ui/structs-enums/enum-discrim-autosizing.rs
2024-02-16 20:02:50 +00:00

54 lines
819 B
Rust

//@ run-pass
#![allow(dead_code)]
#![allow(overflowing_literals)]
use std::mem::size_of;
enum Ei8 {
Ai8 = -1,
Bi8 = 0
}
enum Eu8 {
Au8 = 0,
Bu8 = 0x80
}
enum Ei16 {
Ai16 = -1,
Bi16 = 0x80
}
enum Eu16 {
Au16 = 0,
Bu16 = 0x8000
}
enum Ei32 {
Ai32 = -1,
Bi32 = 0x8000
}
enum Eu32 {
Au32 = 0,
Bu32 = 0x8000_0000
}
enum Ei64 {
Ai64 = -1,
Bi64 = 0x8000_0000
}
pub fn main() {
assert_eq!(size_of::<Ei8>(), 1);
assert_eq!(size_of::<Eu8>(), 1);
assert_eq!(size_of::<Ei16>(), 2);
assert_eq!(size_of::<Eu16>(), 2);
assert_eq!(size_of::<Ei32>(), 4);
assert_eq!(size_of::<Eu32>(), 4);
#[cfg(target_pointer_width = "64")]
assert_eq!(size_of::<Ei64>(), 8);
#[cfg(target_pointer_width = "32")]
assert_eq!(size_of::<Ei64>(), 4);
}