析构函数？ [英] Destructor??

问题描述

有没有人有破坏者抛出执行的场景，这将导致内存泄漏......这是否有意义..


振作起来..

解决方案

Radde写道：< blockquote class =post_quotes> HI，

有没有人有景点，析构函数会抛出导致内存泄漏的行为......这是否有意义..
干杯......

希望不是。析构函数永远不应该抛出。


/ Peter

Radde写道：

有没有人有景点，析构函数会引发内存泄漏的行为......这是否有意义......

干杯......

http://www.parashift.com/c++-faq-lit....html#faq-17.3

析构函数不得抛出异常。更确切地说，永远不要允许

例外离开析构函数。它可能导致内存泄漏。考虑以下代码

...


模板< typename Iter>

void destroy（Iter begin，Iter end）

{

while（begin！= end）

{

// destruct object（* begin）

++开始;

}

}


如果（* begin）属于T类型并且在循环中，第一个析构函数抛出，然后该函数将退出，其他对象将永远不会被销毁。这只是一个粗略的例子，表明抛出的b / b $ b $的析构函数很糟糕并且可能导致泄漏。


问候，

Srini

HI,

Do anyone have scenrio where destructor throws execption which will
lead to memory leak..Does this make sense..

Cheers up..

解决方案

Radde wrote:

HI,

Do anyone have scenrio where destructor throws execption which will
lead to memory leak..Does this make sense..

Cheers up..

Hopefully not. A destructor should never throw.

/Peter

Radde wrote:

HI,

Do anyone have scenrio where destructor throws execption which will
lead to memory leak..Does this make sense..

Cheers up..

http://www.parashift.com/c++-faq-lit....html#faq-17.3

Destructors must NOT throw exceptions. More precisely, never allow
exceptions to leave destructors. It can lead to memory leaks. Consider
the following code...

template <typename Iter>
void destroy(Iter begin, Iter end)
{
while(begin != end)
{
// destruct object (*begin)
++begin;
}
}

If (*begin) is of type T, and in the loop, the first destructor throws,
then the function will exit and the other objects will never be
destroyed. This was just a crude example to show that destructors that
throw are bad and can cause leaks.

Regards,
Srini

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