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// revisions: current next
//[next] compile-flags: -Ztrait-solver=next
//! The unit type, `()`, should be one byte.
#![crate_type = "lib"]
#![feature(transmutability)]
#![allow(dead_code)]
mod assert {
use std::mem::{Assume, BikeshedIntrinsicFrom};
pub fn is_transmutable<Src, Dst, Context>()
where
Dst: BikeshedIntrinsicFrom<Src, Context, {
Assume::ALIGNMENT
.and(Assume::LIFETIMES)
.and(Assume::SAFETY)
.and(Assume::VALIDITY)
}>
{}
}
#[repr(C)]
struct Zst;
fn should_have_correct_size() {
struct Context;
assert::is_transmutable::<(), Zst, Context>();
assert::is_transmutable::<Zst, (), Context>();
assert::is_transmutable::<(), u8, Context>(); //~ ERROR cannot be safely transmuted
}
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