diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs new file mode 100644 index 000000000..ae51c52d8 --- /dev/null +++ b/src/tools/clippy/tests/ui/invalid_null_ptr_usage.rs @@ -0,0 +1,49 @@ +// run-rustfix + +fn main() { + unsafe { + let _slice: &[usize] = std::slice::from_raw_parts(std::ptr::null(), 0); + let _slice: &[usize] = std::slice::from_raw_parts(std::ptr::null_mut(), 0); + + let _slice: &[usize] = std::slice::from_raw_parts_mut(std::ptr::null_mut(), 0); + + std::ptr::copy::<usize>(std::ptr::null(), std::ptr::NonNull::dangling().as_ptr(), 0); + std::ptr::copy::<usize>(std::ptr::NonNull::dangling().as_ptr(), std::ptr::null_mut(), 0); + + std::ptr::copy_nonoverlapping::<usize>(std::ptr::null(), std::ptr::NonNull::dangling().as_ptr(), 0); + std::ptr::copy_nonoverlapping::<usize>(std::ptr::NonNull::dangling().as_ptr(), std::ptr::null_mut(), 0); + + struct A; // zero sized struct + assert_eq!(std::mem::size_of::<A>(), 0); + + let _a: A = std::ptr::read(std::ptr::null()); + let _a: A = std::ptr::read(std::ptr::null_mut()); + + let _a: A = std::ptr::read_unaligned(std::ptr::null()); + let _a: A = std::ptr::read_unaligned(std::ptr::null_mut()); + + let _a: A = std::ptr::read_volatile(std::ptr::null()); + let _a: A = std::ptr::read_volatile(std::ptr::null_mut()); + + let _a: A = std::ptr::replace(std::ptr::null_mut(), A); + + let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null(), 0); + let _slice: *const [usize] = std::ptr::slice_from_raw_parts(std::ptr::null_mut(), 0); + + let _slice: *const [usize] = std::ptr::slice_from_raw_parts_mut(std::ptr::null_mut(), 0); + + std::ptr::swap::<A>(std::ptr::null_mut(), &mut A); + std::ptr::swap::<A>(&mut A, std::ptr::null_mut()); + + std::ptr::swap_nonoverlapping::<A>(std::ptr::null_mut(), &mut A, 0); + std::ptr::swap_nonoverlapping::<A>(&mut A, std::ptr::null_mut(), 0); + + std::ptr::write(std::ptr::null_mut(), A); + + std::ptr::write_unaligned(std::ptr::null_mut(), A); + + std::ptr::write_volatile(std::ptr::null_mut(), A); + + std::ptr::write_bytes::<usize>(std::ptr::null_mut(), 42, 0); + } +} |