rust/tests/ui/generic-const-items/const-trait-impl.rs
2024-02-16 20:02:50 +00:00

34 lines
696 B
Rust

//@ check-pass
// Test that we can call methods from const trait impls inside of generic const items.
#![feature(generic_const_items, const_trait_impl, effects)]
#![allow(incomplete_features)]
#![crate_type = "lib"]
const CREATE<T: const Create>: T = T::create();
pub const K0: i32 = CREATE::<i32>;
pub const K1: i32 = CREATE; // arg inferred
#[const_trait]
trait Create {
fn create() -> Self;
}
impl const Create for i32 {
fn create() -> i32 {
4096
}
}
trait Mod { // doesn't need to be a `#[const_trait]`
const CREATE<T: const Create>: T;
}
impl Mod for () {
const CREATE<T: const Create>: T = T::create();
}
pub const K2: i32 = <() as Mod>::CREATE::<i32>;