mirror of https://github.com/rust-lang/rust
29 lines
559 B
Rust
29 lines
559 B
Rust
#![crate_type = "lib"]
|
|
#![feature(generic_const_exprs)]
|
|
#![allow(incomplete_features)]
|
|
|
|
pub struct Const<const U: u8>;
|
|
|
|
pub trait Trait {
|
|
type AssocTy;
|
|
fn assoc_fn() -> Self::AssocTy;
|
|
}
|
|
|
|
impl<const U: u8> Trait for Const<U>
|
|
where
|
|
// OK, trait impl predicates
|
|
Const<{ my_const_fn(U) }>:,
|
|
{
|
|
type AssocTy = Const<{ my_const_fn(U) }>;
|
|
//~^ ERROR private type
|
|
//~| ERROR private type
|
|
fn assoc_fn() -> Self::AssocTy {
|
|
Const
|
|
}
|
|
}
|
|
|
|
const fn my_const_fn(val: u8) -> u8 {
|
|
// body of this function doesn't matter
|
|
val
|
|
}
|