#![deny(unaligned_references)] #[repr(packed)] pub struct Good { data: u64, ptr: &'static u64, data2: [u64; 2], aligned: [u8; 32], } fn main() { unsafe { let good = Good { data: 0, ptr: &0, data2: [0, 0], aligned: [0; 32] }; let _ = &good.ptr; //~ ERROR reference to packed field let _ = &good.data; //~ ERROR reference to packed field // Error even when turned into raw pointer immediately. let _ = &good.data as *const _; //~ ERROR reference to packed field let _: *const _ = &good.data; //~ ERROR reference to packed field // Error on method call. let _ = good.data.clone(); //~ ERROR reference to packed field // Error for nested fields. let _ = &good.data2[0]; //~ ERROR reference to packed field let _ = &*good.ptr; // ok, behind a pointer let _ = &good.aligned; // ok, has align 1 let _ = &good.aligned[2]; // ok, has align 1 } }