2017-09-18 05:47:33 -05:00
|
|
|
|
|
|
|
|
|
2017-05-17 07:19:44 -05:00
|
|
|
#![warn(cmp_null)]
|
2016-08-22 11:29:29 -05:00
|
|
|
#![allow(unused_mut)]
|
|
|
|
|
|
|
|
|
|
use std::ptr;
|
|
|
|
|
|
|
|
|
|
fn main() {
|
|
|
|
|
let x = 0;
|
|
|
|
|
let p : *const usize = &x;
|
2017-02-08 07:58:07 -06:00
|
|
|
if p == ptr::null() {
|
2016-08-22 11:29:29 -05:00
|
|
|
println!("This is surprising!");
|
|
|
|
|
}
|
|
|
|
|
let mut y = 0;
|
|
|
|
|
let mut m : *mut usize = &mut y;
|
2017-02-08 07:58:07 -06:00
|
|
|
if m == ptr::null_mut() {
|
2016-08-22 11:29:29 -05:00
|
|
|
println!("This is surprising, too!");
|
|
|
|
|
}
|
|
|
|
|
}
|
