unsafe fn unsafe_fn() {}

struct HasUnsafeFn;

impl HasUnsafeFn {
    unsafe fn unsafe_method(&self) {}
}

fn main() {
    let x = &5 as *const usize;
    unsafe {
        unsafe_fn();
        HasUnsafeFn.unsafe_method();
        let y = *(x);
        let z = -x;
    }
}