Examples are: attempts to execute a privileged instruction and arithmetic traps such as overflow, underflow, and divide by zero. 例如:企图执行一条特权指令和诸如上溢出、下溢出与除0等的算术运算陷井。
In all integer arithmetic operations, both overflow and underflow shall be ignored. The value returned when either overflow or underflow occurs is implementation defined. 在所有的整数算术运算中,溢位和不足必须被忽视.发生溢位或不足时,传回值由实作自订。