use core::marker::{PhantomData, PhantomPinned}; | |
use core::mem; | |
// . size = 0 | |
// . align = 1 | |
// . ffi-safe | |
// . !Send | |
// . !Sync | |
// . !Unpin | |
#[repr(C, packed)] | |
pub struct Opaque { | |
_private: [*const u8; 0], | |
_pinned: PhantomData<PhantomPinned>, | |
} | |
const_assert_eq!(0, mem::size_of::<Opaque>()); | |
const_assert_eq!(1, mem::align_of::<Opaque>()); |