tests/ui/impl-trait/normalize-tait-in-const.rs


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// known-bug: #103507

#![feature(type_alias_impl_trait)]
#![feature(const_trait_impl)]
#![feature(const_refs_to_cell)]
#![feature(inline_const)]

use std::marker::Destruct;

trait T {
    type Item;
}

type Alias<'a> = impl T<Item = &'a ()>;

struct S;
impl<'a> T for &'a S {
    type Item = &'a ();
}

const fn filter_positive<'a>() -> &'a Alias<'a> {
    &&S
}

const fn with_positive<F: ~const for<'a> Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
    fun(filter_positive());
}

const fn foo(_: &Alias<'_>) {}

const BAR: () = {
    with_positive(foo);
};

fn main() {}