{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"#[cfg_attr(any(target_arch"}]}
#[cfg_attr(any(target_arch = "x86", target_arch = "x86_64"), repr(packed))]
// invoking undefined behavior by taking a reference to the packed field.
#[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone, Copy, Hash)]