mirror of https://github.com/rust-lang/rust
30 lines
965 B
Rust
30 lines
965 B
Rust
//@ check-pass
|
|
#![feature(generic_const_exprs)]
|
|
#![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() {}
|