//@aux-build:proc_macros.rs #![warn(clippy::as_conversions)] #![allow(clippy::borrow_as_ptr, unused)] extern crate proc_macros; use proc_macros::{external, with_span}; fn main() { let i = 0u32 as u64; let j = &i as *const u64 as *mut u64; external!(0u32 as u64); } with_span!( span fn converting() { let x = 0u32 as u64; } );