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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs b/src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs new file mode 100644 index 000000000..66ea7c652 --- /dev/null +++ b/src/tools/clippy/tests/ui/swap_ptr_to_ref_unfixable.rs @@ -0,0 +1,18 @@ +#![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)); + } +} |