#![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); let _: &u64 = std::mem::transmute(std::ptr::null::<u64>()); } } 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); // Should NOT raise a lint. let _: &u64 = std::mem::transmute(NOT_ZPTR); } } fn main() { one_liners(); transmute_const(); }