mirror of https://github.com/rust-lang/rust.git
19 lines
359 B
Rust
19 lines
359 B
Rust
#![allow(incomplete_features)]
|
|
#![feature(generic_const_exprs)]
|
|
#![feature(specialization)]
|
|
|
|
pub trait Trait {
|
|
type Type;
|
|
}
|
|
|
|
impl<T: ?Sized> Trait for T {
|
|
default type Type = [u8; 1];
|
|
}
|
|
|
|
impl<T: Trait> Trait for *const T {
|
|
type Type = [u8; std::mem::size_of::<<T as Trait>::Type>()];
|
|
//~^ ERROR: unconstrained generic constant
|
|
}
|
|
|
|
fn main() {}
|