mirror of https://github.com/rust-lang/rust
45 lines
677 B
Rust
45 lines
677 B
Rust
//@ run-pass
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#![allow(dead_code)]
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#![allow(unused_comparisons)]
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use std::mem;
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#[repr(packed)]
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struct P1<T, S> {
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a: T,
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b: u8,
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c: S
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}
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#[repr(packed(2))]
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struct P2<T, S> {
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a: T,
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b: u8,
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c: S
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}
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#[repr(C, packed(4))]
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struct P4C<T, S> {
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a: T,
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b: u8,
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c: S
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}
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macro_rules! check {
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($t:ty, $align:expr, $size:expr) => ({
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assert_eq!(mem::align_of::<$t>(), $align);
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assert_eq!(mem::size_of::<$t>(), $size);
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});
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}
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pub fn main() {
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check!(P1<u8, u8>, 1, 3);
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check!(P1<u64, u16>, 1, 11);
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check!(P2<u8, u8>, 1, 3);
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check!(P2<u64, u16>, 2, 12);
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check!(P4C<u8, u8>, 1, 3);
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check!(P4C<u16, u64>, 4, 12);
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}
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