However , if any such execution sequence contains an undefined operation , this international standard places no requirement on the implementation executing that program with that input ( not even with regard to operations preceding the first undefined operation ) 盡管如此,如果在這個執(zhí)行序列中包含未定義行為,本標準仍不會對實現(xiàn)以這個輸入數(shù)據(jù)的這個程序的執(zhí)行(不包括對第一個未定義操作之前的操作)作任何規(guī)范。