mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 02:33:55 +00:00
39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
// test the deref_nullptr lint
|
|
|
|
#![deny(deref_nullptr)]
|
|
|
|
use std::ptr;
|
|
|
|
struct Struct {
|
|
field: u8,
|
|
}
|
|
|
|
fn f() {
|
|
unsafe {
|
|
let a = 1;
|
|
let ub = *(a as *const i32);
|
|
let ub = *(0 as *const i32);
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = *ptr::null::<i32>();
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = *ptr::null_mut::<i32>();
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = *(ptr::null::<i16>() as *const i32);
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = *(ptr::null::<i16>() as *mut i32 as *mut usize as *const u8);
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = &*ptr::null::<i32>();
|
|
//~^ ERROR dereferencing a null pointer
|
|
let ub = &*ptr::null_mut::<i32>();
|
|
//~^ ERROR dereferencing a null pointer
|
|
ptr::addr_of!(*ptr::null::<i32>());
|
|
//~^ ERROR dereferencing a null pointer
|
|
ptr::addr_of_mut!(*ptr::null_mut::<i32>());
|
|
//~^ ERROR dereferencing a null pointer
|
|
let offset = ptr::addr_of!((*ptr::null::<Struct>()).field);
|
|
//~^ ERROR dereferencing a null pointer
|
|
}
|
|
}
|
|
|
|
fn main() {}
|