2
0
Fork 0
mirror of https://github.com/rust-lang/rust-clippy synced 2024-12-25 12:33:30 +00:00
rust-clippy/tests/ui/cmp_null.rs

20 lines
574 B
Rust

#![warn(clippy::cmp_null)]
#![allow(unused_mut)]
use std::ptr;
fn main() {
let x = 0;
let p: *const usize = &x;
if p == ptr::null() {
//~^ ERROR: comparing with null is better expressed by the `.is_null()` method
//~| NOTE: `-D clippy::cmp-null` implied by `-D warnings`
println!("This is surprising!");
}
let mut y = 0;
let mut m: *mut usize = &mut y;
if m == ptr::null_mut() {
//~^ ERROR: comparing with null is better expressed by the `.is_null()` method
println!("This is surprising, too!");
}
}