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rust-clippy/tests/ui/swap_ptr_to_ref_unfixable.rs

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2022-05-30 16:36:05 +00:00
#![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);
//~^ ERROR: call to `core::mem::swap` with a parameter derived from a raw pointer
//~| NOTE: `-D clippy::swap-ptr-to-ref` implied by `-D warnings`
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core::mem::swap(&mut *y, addr_of_mut_to_ref!(x));
//~^ ERROR: call to `core::mem::swap` with a parameter derived from a raw pointer
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core::mem::swap(addr_of_mut_to_ref!(x), addr_of_mut_to_ref!(x));
//~^ ERROR: call to `core::mem::swap` with a parameter derived from a raw pointer
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}
}