{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"span_bug!(span,"}]}
        span_bug!(span, "FnPtr::addr with bound vars for `{self_ty}`");
    let Some(sig) = tcx.fn_sig(def_id).instantiate(tcx, &[self_ty.into()]).no_bound_vars() else {
    };