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51 lines
1.4 KiB
Rust
51 lines
1.4 KiB
Rust
//@ run-pass
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//@ reference: layout.aggregate.struct-size-align
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//@ edition: 2018
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#[allow(dead_code)]
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struct ReprRustStruct {
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x: i32,
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y: [u32; 4],
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z: f32,
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a: u128,
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}
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fn test_size_contains_all_types() {
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assert!(
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core::mem::size_of::<ReprRustStruct>()
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>= (core::mem::size_of::<i32>()
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+ core::mem::size_of::<[u32; 4]>()
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+ core::mem::size_of::<f32>()
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+ core::mem::size_of::<u128>())
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);
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}
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fn test_size_contains_all_fields() {
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assert!(
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(core::mem::offset_of!(ReprRustStruct, x) + core::mem::size_of::<i32>())
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<= core::mem::size_of::<ReprRustStruct>()
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);
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assert!(
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(core::mem::offset_of!(ReprRustStruct, y) + core::mem::size_of::<[u32; 4]>())
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<= core::mem::size_of::<ReprRustStruct>()
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);
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assert!(
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(core::mem::offset_of!(ReprRustStruct, z) + core::mem::size_of::<f32>())
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<= core::mem::size_of::<ReprRustStruct>()
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);
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assert!(
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(core::mem::offset_of!(ReprRustStruct, a) + core::mem::size_of::<u128>())
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<= core::mem::size_of::<ReprRustStruct>()
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);
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}
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fn test_size_modulo_align() {
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assert_eq!(core::mem::size_of::<ReprRustStruct>() % core::mem::align_of::<ReprRustStruct>(), 0);
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}
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fn main() {
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test_size_contains_all_fields();
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test_size_contains_all_types();
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test_size_modulo_align();
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}
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