mirror of https://github.com/rust-lang/rust
30 lines
636 B
Rust
30 lines
636 B
Rust
//@ check-pass
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#![crate_type = "lib"]
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#![feature(transmutability)]
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#![feature(marker_trait_attr)]
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#![allow(dead_code)]
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mod assert {
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use std::mem::{Assume, BikeshedIntrinsicFrom};
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pub fn is_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<Src, { Assume::SAFETY }>
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{}
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}
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fn should_match_bool() {
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#[derive(Copy, Clone)] #[repr(u8)] pub enum False { V = 0 }
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#[derive(Copy, Clone)] #[repr(u8)] pub enum True { V = 1 }
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#[repr(C)]
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pub union Bool {
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pub f: False,
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pub t: True,
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}
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assert::is_transmutable::<Bool, bool>();
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assert::is_transmutable::<bool, Bool>();
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}
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