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rust-clippy/tests/ui/cmp_null.rs

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