error[E0793]: reference to packed field is unaligned --> $DIR/packed-struct-borrow-element-64bit.rs:13:15 | LL | let brw = &foo.baz; | ^^^^^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced) = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers) error: aborting due to previous error For more information about this error, try `rustc --explain E0793`.