rust/tests/ui/const-generics/generic_const_exprs/abstract-const-as-cast-4.rs

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2021-06-10 08:53:38 -05:00
// check-pass
#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
trait Trait {}
pub struct EvaluatableU128<const N: u128>;
struct HasCastInTraitImpl<const N: usize, const M: u128>;
impl<const O: usize> Trait for HasCastInTraitImpl<O, { O as u128 }> {}
pub fn use_trait_impl<const N: usize>() where EvaluatableU128<{N as u128}>:, {
fn assert_impl<T: Trait>() {}
assert_impl::<HasCastInTraitImpl<N, { N as u128 }>>();
assert_impl::<HasCastInTraitImpl<N, { N as _ }>>();
assert_impl::<HasCastInTraitImpl<12, { 12 as u128 }>>();
assert_impl::<HasCastInTraitImpl<13, 13>>();
}
pub fn use_trait_impl_2<const N: usize>() where EvaluatableU128<{N as _}>:, {
fn assert_impl<T: Trait>() {}
assert_impl::<HasCastInTraitImpl<N, { N as u128 }>>();
assert_impl::<HasCastInTraitImpl<N, { N as _ }>>();
assert_impl::<HasCastInTraitImpl<12, { 12 as u128 }>>();
assert_impl::<HasCastInTraitImpl<13, 13>>();
}
fn main() {}