1
2
3
4
5
6
7
8

/// Marker for types that are `Sync` but not `Send`
pub(crate) struct SyncNotSend(#[allow(dead_code)] *mut ());

unsafe impl Sync for SyncNotSend {}

cfg_rt! {
    pub(crate) struct NotSendOrSync(#[allow(dead_code)] *mut ());
}