| #![allow(missing_docs)] | |
| 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>()); |