mirror of https://github.com/rust-lang/rust
31 lines
504 B
Rust
31 lines
504 B
Rust
//@ run-pass
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#![allow(dead_code)]
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use std::mem::size_of;
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enum E {
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A = 1,
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B = 2,
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C = 3,
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}
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struct S {
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a: u16,
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b: u8,
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e: E,
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}
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fn main() {
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assert_eq!(size_of::<E>(), 1);
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assert_eq!(size_of::<Option<E>>(), 1);
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assert_eq!(size_of::<Result<E, ()>>(), 1);
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assert_eq!(size_of::<Option<S>>(), size_of::<S>());
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let enone = None::<E>;
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let esome = Some(E::A);
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if let Some(..) = enone {
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panic!();
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}
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if let None = esome {
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panic!();
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}
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}
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