43 lines
680 B
Rust
43 lines
680 B
Rust
#![allow(dead_code)]
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#[repr(packed)]
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struct S {
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a: i32,
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b: i64,
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}
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#[repr(packed)]
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struct Test1<'a> {
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x: u8,
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other: &'a u32,
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}
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#[repr(packed)]
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struct Test2<'a> {
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x: u8,
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other: &'a Test1<'a>,
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}
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fn test(t: Test2) {
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let x = *t.other.other;
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assert_eq!(x, 42);
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}
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fn main() {
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let mut x = S {
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a: 42,
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b: 99,
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};
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let a = x.a;
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let b = x.b;
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assert_eq!(a, 42);
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assert_eq!(b, 99);
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// can't do `assert_eq!(x.a, 42)`, because `assert_eq!` takes a reference
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assert_eq!({x.a}, 42);
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assert_eq!({x.b}, 99);
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x.b = 77;
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assert_eq!({x.b}, 77);
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test(Test2 { x: 0, other: &Test1 { x: 0, other: &42 }});
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}
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