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#![allow(dead_code)]
#![warn(clippy::transmuting_null)]
#![allow(clippy::zero_ptr)]
#![allow(clippy::transmute_ptr_to_ref)]
#![allow(clippy::eq_op)]
// Easy to lint because these only span one line.
fn one_liners() {
unsafe {
let _: &u64 = std::mem::transmute(0 as *const u64);
//~^ ERROR: transmuting a known null pointer into a reference
//~| NOTE: `-D clippy::transmuting-null` implied by `-D warnings`
let _: &u64 = std::mem::transmute(std::ptr::null::<u64>());
//~^ ERROR: transmuting a known null pointer into a reference
}
}
pub const ZPTR: *const usize = 0 as *const _;
pub const NOT_ZPTR: *const usize = 1 as *const _;
fn transmute_const() {
unsafe {
// Should raise a lint.
let _: &u64 = std::mem::transmute(ZPTR);
//~^ ERROR: transmuting a known null pointer into a reference
// Should NOT raise a lint.
let _: &u64 = std::mem::transmute(NOT_ZPTR);
}
}
fn main() {
one_liners();
transmute_const();
}
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