atomic.rs

mem::transmute_copy(&(*(dst as *const AtomicU8)).swap(mem::transmute_copy(&val), order))
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let atomic = &*(dst as *const AtomicU8);
let new = mem::transmute_copy(&val);
let old = atomic.swap(new);
mem::transmute_copy(&old)

ptr::read(&(*(dst as *const AtomicU8)).swap(ptr::read(&val as *const _ as *const u8), order) as *const _ as *const u8)
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let atomic = &*(dst as *const AtomicU8);
let new = ptr::read(&val as *const _ as *const u8);
let old = atomic.swap(new);
ptr::read(&old as *const u8 as *const _)