rust/tests/ui/cmp_null.rs
2017-10-03 12:07:24 +02:00

20 lines
330 B
Rust

#![warn(cmp_null)]
#![allow(unused_mut)]
use std::ptr;
fn main() {
let x = 0;
let p : *const usize = &x;
if p == ptr::null() {
println!("This is surprising!");
}
let mut y = 0;
let mut m : *mut usize = &mut y;
if m == ptr::null_mut() {
println!("This is surprising, too!");
}
}