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//@ check-pass
// gate-test-effects
// ^ effects doesn't have a gate so we will trick tidy into thinking this is a gate test
#![feature(
const_trait_impl,
effects, //~ WARN the feature `effects` is incomplete
core_intrinsics,
const_eval_select
)]
// ensure we are passing in the correct host effect in always const contexts.
pub const fn hmm<T>() -> usize {
// FIXME(const_trait_impl): maybe we should have a way to refer to the (hidden) effect param
fn one() -> usize { 1 }
const fn zero() -> usize { 0 }
unsafe {
std::intrinsics::const_eval_select((), zero, one)
}
}
const _: () = {
let x = hmm::<()>();
assert!(0 == x);
};
pub const fn uwu(x: [u8; hmm::<()>()]) {
let [] = x;
}
fn main() {}
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