rust/tests/ui/generic-const-items/associated-const-equality.rs
2024-02-18 10:29:22 +01:00

32 lines
675 B
Rust

//@ check-pass
#![feature(generic_const_items, associated_const_equality, adt_const_params)]
#![allow(incomplete_features)]
trait Owner {
const C<const N: u32>: u32;
const K<const N: u32>: u32;
const Q<T>: Maybe<T>;
}
impl Owner for () {
const C<const N: u32>: u32 = N;
const K<const N: u32>: u32 = N + 1;
const Q<T>: Maybe<T> = Maybe::Nothing;
}
fn take0<const N: u32>(_: impl Owner<C<N> = { N }>) {}
fn take1(_: impl Owner<K<99> = 100>) {}
fn take2(_: impl Owner<Q<()> = { Maybe::Just(()) }>) {}
fn main() {
take0::<128>(());
take1(());
}
#[derive(PartialEq, Eq, std::marker::ConstParamTy)]
enum Maybe<T> {
Nothing,
Just(T),
}