unsafe Rust #

fn main() {
    let mut num = 5;
    
    unsafe {
        // 解引用裸指针
        let r1 = &num as *const i32;
        println!("r1 = {}", *r1);
    }
}

unsafe fn dangerous() {
    // 不安全操作
}

fn main() {
    unsafe {
        dangerous();
    }
}