use std::sync::Arc;

const CUTOFF: usize = std::mem::size_of::<&[u8]>() - 1;

type Inner = [u8; CUTOFF];

pub struct IVec(IVecInner);

enum IVecInner {
    Inline(u8, Inner),
    Remote(Arc<[u8]>),
}

struct Inline(u8, Inner);

fn main() {
    dbg!(std::mem::size_of::<Inline>());
    dbg!(std::mem::size_of::<IVec>());
}