30 lines
597 B
Rust
30 lines
597 B
Rust
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#![crate_type = "lib"]
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#![feature(transmutability)]
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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 struct Context;
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pub fn is_maybe_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<
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Src,
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Context,
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{ Assume { alignment: true, lifetimes: true, safety: true, validity: true } },
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>,
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{
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}
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}
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fn test() {
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#[repr(C, align(2))]
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struct A(u8, u8);
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#[repr(C)]
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struct B(u8, u8);
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assert::is_maybe_transmutable::<B, A>();
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//~^ ERROR cannot be safely transmuted
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}
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