undefined behavior

Floating to Floating conversions are defined only if N is representable ; if it is not , the conversion has undefined behavior .

浮点数到浮点数的转换仅当N是可表示时有定义；否则转换就是未定义行为。

C / C + + programming languages have the advantage of flexibility and efficiency , but at the same time , lots of undefined behavior makes it easy to bring serious security violations .

C/C++语言具有编程灵活，执行效率高等特点，但同时也存在大量未定义行为，易造成安全隐患。

Otherwise , the program does not conform to the ABI and has undefined behavior .

否则，该程序将不符合ABI并带有未定义的行为。

Due to that the authentication code of the watermark structure is selfcontained , tampering the structure will lead to the application 's undefined behavior .

由于水印结构的验证码是自包含的，对其篡改会导致应用程序功能错误。

Note that had we declared the reference I without the const qualifier , the function f () could have modified its argument , thereby causing undefined behavior .

注意我们没有将i声明为静态类型，但是函数f仍有可能修改它的这个参数，这将引起异常。

However , if you want exception handling you must do it only in the TearDown code because throwing an exception from the destructor results in undefined behavior .

但是，如果需要异常处理，那么只能在TearDown代码中进行，因为从析构函数中抛出异常会导致不确定的结果。

You know all those times people have told you not to do something , because it 's " undefined behavior ", or that you don 't really need to know the internals ?

您肯定碰到过这种情形，有人叫您不要做某事，因为它是“没有先例的行为”，或者您真的不需要了解内幕。

The experiments proved that intrusion detection rate is 86 percent , and maximal error is 3 percent , which can advance detection rate by more training samples , therefore , can detect undefined intrusion behavior effectively .

实验证明，此算法入侵检测率可达86%，最大误报率为3%，加大训练样本可进一步提高检测率，从而更有效地检测出未知的入侵行为；

This can result in undefined and unexpected behavior , which can be difficult and time-consuming to track down .

这可能导致不明确、不可预见的后果，要跟踪这种情况也是很困难很耗时间的。