2013-09-29 16:00:34 -05:00
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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2018-08-30 07:18:55 -05:00
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// run-pass
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2015-03-22 15:13:15 -05:00
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2016-03-07 14:26:00 -06:00
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use std::mem::{size_of, align_of};
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2013-09-29 16:00:34 -05:00
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#[repr(i8)]
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enum Ei8 {
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Ai8 = 0,
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Bi8 = 1
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}
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#[repr(u8)]
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enum Eu8 {
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Au8 = 0,
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Bu8 = 1
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}
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#[repr(i16)]
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enum Ei16 {
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Ai16 = 0,
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Bi16 = 1
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}
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#[repr(u16)]
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enum Eu16 {
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Au16 = 0,
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Bu16 = 1
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}
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#[repr(i32)]
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enum Ei32 {
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Ai32 = 0,
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Bi32 = 1
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}
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#[repr(u32)]
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enum Eu32 {
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Au32 = 0,
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Bu32 = 1
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}
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#[repr(i64)]
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enum Ei64 {
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Ai64 = 0,
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Bi64 = 1
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}
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#[repr(u64)]
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enum Eu64 {
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Au64 = 0,
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Bu64 = 1
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}
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2015-03-25 19:06:52 -05:00
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#[repr(isize)]
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2013-09-29 16:00:34 -05:00
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enum Eint {
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Aint = 0,
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Bint = 1
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}
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2015-03-25 19:06:52 -05:00
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#[repr(usize)]
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2013-09-29 16:00:34 -05:00
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enum Euint {
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Auint = 0,
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Buint = 1
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}
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2016-03-07 14:26:00 -06:00
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#[repr(u8)]
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enum Eu8NonCLike<T> {
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_None,
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_Some(T),
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}
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2016-03-02 12:10:39 -06:00
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#[repr(i64)]
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2016-03-07 14:26:00 -06:00
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enum Ei64NonCLike<T> {
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_None,
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_Some(T),
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}
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#[repr(u64)]
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2016-03-07 14:26:00 -06:00
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enum Eu64NonCLike<T> {
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2016-03-02 12:10:39 -06:00
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_None,
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_Some(T),
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}
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2013-09-29 16:00:34 -05:00
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pub fn main() {
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assert_eq!(size_of::<Ei8>(), 1);
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assert_eq!(size_of::<Eu8>(), 1);
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assert_eq!(size_of::<Ei16>(), 2);
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assert_eq!(size_of::<Eu16>(), 2);
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assert_eq!(size_of::<Ei32>(), 4);
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assert_eq!(size_of::<Eu32>(), 4);
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assert_eq!(size_of::<Ei64>(), 8);
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assert_eq!(size_of::<Eu64>(), 8);
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2015-03-25 19:06:52 -05:00
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assert_eq!(size_of::<Eint>(), size_of::<isize>());
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assert_eq!(size_of::<Euint>(), size_of::<usize>());
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2016-03-07 14:26:00 -06:00
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assert_eq!(size_of::<Eu8NonCLike<()>>(), 1);
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assert_eq!(size_of::<Ei64NonCLike<()>>(), 8);
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assert_eq!(size_of::<Eu64NonCLike<()>>(), 8);
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let u8_expected_size = round_up(9, align_of::<Eu64NonCLike<u8>>());
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assert_eq!(size_of::<Eu64NonCLike<u8>>(), u8_expected_size);
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let array_expected_size = round_up(28, align_of::<Eu64NonCLike<[u32; 5]>>());
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assert_eq!(size_of::<Eu64NonCLike<[u32; 5]>>(), array_expected_size);
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assert_eq!(size_of::<Eu64NonCLike<[u32; 6]>>(), 32);
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2017-09-10 09:15:29 -05:00
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assert_eq!(align_of::<Eu32>(), align_of::<u32>());
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assert_eq!(align_of::<Eu64NonCLike<u8>>(), align_of::<u64>());
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2016-03-07 14:26:00 -06:00
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}
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// Rounds x up to the next multiple of a
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fn round_up(x: usize, a: usize) -> usize {
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((x + (a - 1)) / a) * a
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2013-09-29 16:00:34 -05:00
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}
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