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//@ check-fail
#![feature(generic_const_exprs, transmutability)]
#![allow(incomplete_features)]
mod assert {
use std::mem::{Assume, TransmuteFrom};
pub fn is_transmutable<
Src,
Dst,
const ASSUME_ALIGNMENT: bool,
const ASSUME_LIFETIMES: bool,
const ASSUME_SAFETY: bool,
const ASSUME_VALIDITY: bool,
>()
where
Dst: TransmuteFrom<
Src,
{ from_options(ASSUME_ALIGNMENT, ASSUME_LIFETIMES, ASSUME_SAFETY, ASSUME_VALIDITY) }
>,
{}
// This should not cause an ICE
const fn from_options(
, //~ ERROR expected parameter name, found `,`
, //~ ERROR expected parameter name, found `,`
, //~ ERROR expected parameter name, found `,`
, //~ ERROR expected parameter name, found `,`
) -> Assume {} //~ ERROR mismatched types
}
fn main() {
#[repr(C)] struct Src;
#[repr(C)] struct Dst;
assert::is_transmutable::<Src, Dst, false, false, { true }, false>();
}
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