mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-20 14:41:58 +00:00
22 lines
756 B
Rust
22 lines
756 B
Rust
#![warn(clippy::swap_ptr_to_ref)]
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macro_rules! addr_of_mut_to_ref {
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($e:expr) => {
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&mut *core::ptr::addr_of_mut!($e)
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};
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}
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fn main() {
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let mut x = 0u32;
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let y: *mut _ = &mut x;
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unsafe {
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core::mem::swap(addr_of_mut_to_ref!(x), &mut *y);
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//~^ ERROR: call to `core::mem::swap` with a parameter derived from a raw pointer
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//~| 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));
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//~^ 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));
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//~^ ERROR: call to `core::mem::swap` with a parameter derived from a raw pointer
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}
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}
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