_cbor_load_uint64
union _cbor_double_helper helper = {.as_uint = _cbor_load_uint64(source)};
uint64_t _cbor_load_uint64(const unsigned char *source);
callbacks->uint64(context, _cbor_load_uint64(source + 1));
callbacks->negint64(context, _cbor_load_uint64(source + 1));
READ_CLAIM_INVOKE(byte_string, _cbor_load_uint64, 8);
READ_CLAIM_INVOKE(string, _cbor_load_uint64, 8);
callbacks->array_start(context, _cbor_load_uint64(source + 1));
callbacks->map_start(context, _cbor_load_uint64(source + 1));
callbacks->tag(context, _cbor_load_uint64(source + 1));