mirror of https://github.com/rust-lang/rust
15 lines
305 B
Rust
15 lines
305 B
Rust
// Check that niche selection prefers zero.
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// See https://github.com/rust-lang/rust/pull/87794
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//@ run-pass
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#[repr(u8)]
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pub enum Size {
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One = 1,
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Two = 2,
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Three = 3,
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}
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fn main() {
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// check that `None` is zero
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assert_eq!(0, unsafe { std::mem::transmute::<Option<Size>, u8>(None) });
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}
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