37 lines
803 B
Rust
37 lines
803 B
Rust
//@ known-bug: #110395
|
|
//@ compile-flags: -Znext-solver
|
|
#![allow(incomplete_features)]
|
|
#![feature(const_trait_impl, generic_const_exprs)]
|
|
|
|
#[const_trait]
|
|
trait ConstName {
|
|
const NAME_BYTES: &'static [u8];
|
|
}
|
|
|
|
impl const ConstName for u8 {
|
|
const NAME_BYTES: &'static [u8] = b"u8";
|
|
}
|
|
|
|
const fn name_len<T: ?Sized + ConstName>() -> usize {
|
|
T::NAME_BYTES.len()
|
|
}
|
|
|
|
impl<T: ?Sized + ConstName> const ConstName for &T
|
|
where
|
|
[(); name_len::<T>()]:,
|
|
{
|
|
const NAME_BYTES: &'static [u8] = b"&T";
|
|
}
|
|
|
|
impl<T: ?Sized + ConstName> const ConstName for &mut T
|
|
where
|
|
[(); name_len::<T>()]:,
|
|
{
|
|
const NAME_BYTES: &'static [u8] = b"&mut T";
|
|
}
|
|
|
|
pub const ICE_1: &'static [u8] = <&&mut u8 as ConstName>::NAME_BYTES;
|
|
pub const ICE_2: &'static [u8] = <&mut &u8 as ConstName>::NAME_BYTES;
|
|
|
|
fn main() {}
|