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Improve tests for #26114

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This commit is contained in:
Devon Hollowood 2016-03-07 12:26:00 -08:00
parent ffe5162cd1
commit b5be095641
1 changed files with 22 additions and 5 deletions
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27
src/test/run-pass/enum-discrim-manual-sizing.rs
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@ -9,7 +9,7 @@
// except according to those terms. // except according to those terms.
use std::mem::size_of; use std::mem::{size_of, align_of};
#[repr(i8)] #[repr(i8)]
enum Ei8 { enum Ei8 {
@ -71,14 +71,20 @@ enum Euint {
Buint = 1 Buint = 1
} }
#[repr(u8)]
enum Eu8NonCLike<T> {
_None,
_Some(T),
}
#[repr(i64)] #[repr(i64)]
enum Ei64_non_c_like<T> { enum Ei64NonCLike<T> {
_None, _None,
_Some(T), _Some(T),
} }
#[repr(u64)] #[repr(u64)]
enum Eu64_non_c_like<T> { enum Eu64NonCLike<T> {
_None, _None,
_Some(T), _Some(T),
} }
@ -94,6 +100,17 @@ pub fn main() {
assert_eq!(size_of::<Eu64>(), 8); assert_eq!(size_of::<Eu64>(), 8);
assert_eq!(size_of::<Eint>(), size_of::<isize>()); assert_eq!(size_of::<Eint>(), size_of::<isize>());
assert_eq!(size_of::<Euint>(), size_of::<usize>()); assert_eq!(size_of::<Euint>(), size_of::<usize>());
assert_eq!(size_of::<Ei64_non_c_like<()>>(), 8); assert_eq!(size_of::<Eu8NonCLike<()>>(), 1);
assert_eq!(size_of::<Eu64_non_c_like<()>>(), 8); assert_eq!(size_of::<Ei64NonCLike<()>>(), 8);
assert_eq!(size_of::<Eu64NonCLike<()>>(), 8);
let u8_expected_size = round_up(9, align_of::<Eu64NonCLike<u8>>());
assert_eq!(size_of::<Eu64NonCLike<u8>>(), u8_expected_size);
let array_expected_size = round_up(28, align_of::<Eu64NonCLike<[u32; 5]>>());
assert_eq!(size_of::<Eu64NonCLike<[u32; 5]>>(), array_expected_size);
assert_eq!(size_of::<Eu64NonCLike<[u32; 6]>>(), 32);
}
// Rounds x up to the next multiple of a
fn round_up(x: usize, a: usize) -> usize {
((x + (a - 1)) / a) * a
} }