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#![warn(clippy::swap_ptr_to_ref)]
macro_rules! addr_of_mut_to_ref {
($e:expr) => {
&mut *core::ptr::addr_of_mut!($e)
};
}
fn main() {
let mut x = 0u32;
let y: *mut _ = &mut x;
unsafe {
core::mem::swap(addr_of_mut_to_ref!(x), &mut *y);
core::mem::swap(&mut *y, addr_of_mut_to_ref!(x));
core::mem::swap(addr_of_mut_to_ref!(x), addr_of_mut_to_ref!(x));
}
}
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