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#![crate_type = "lib"]
#![feature(transmutability)]
mod assert {
use std::mem::TransmuteFrom;
pub fn is_maybe_transmutable<Src, Dst>()
where
Dst: TransmuteFrom<Src>,
{
}
}
fn main() {
pub union Uninit {
a: [u8; usize::MAX],
}
#[repr(C)]
struct ExplicitlyPadded(Uninit);
assert::is_maybe_transmutable::<(), ExplicitlyPadded>();
//~^ ERROR `()` cannot be safely transmuted into `ExplicitlyPadded`
assert::is_maybe_transmutable::<ExplicitlyPadded, ()>();
//~^ ERROR `ExplicitlyPadded` cannot be safely transmuted into `()`
}
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