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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/swap_ptr_to_ref.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/swap_ptr_to_ref.rs b/src/tools/clippy/tests/ui/swap_ptr_to_ref.rs new file mode 100644 index 000000000..282f57121 --- /dev/null +++ b/src/tools/clippy/tests/ui/swap_ptr_to_ref.rs @@ -0,0 +1,24 @@ +// run-rustfix + +#![warn(clippy::swap_ptr_to_ref)] + +use core::ptr::addr_of_mut; + +fn main() { + let mut x = 0u32; + let y: *mut _ = &mut x; + let z: *mut _ = &mut x; + + unsafe { + core::mem::swap(&mut *y, &mut *z); + core::mem::swap(&mut *y, &mut x); + core::mem::swap(&mut x, &mut *y); + core::mem::swap(&mut *addr_of_mut!(x), &mut *addr_of_mut!(x)); + } + + let y = &mut x; + let mut z = 0u32; + let z = &mut z; + + core::mem::swap(y, z); +} |