为什么析构函数不是隐式调用放置新的“？ [英] why destructor is not called implicitly in placement new"?

问题描述

如本网站所提及...
http://www.parashift.com/c++-faq-lite/dtors.html#faq-11.10
但是我没有找到原因，为什么我们应该显式调用desturctor？

As referenced in this site... http://www.parashift.com/c++-faq-lite/dtors.html#faq-11.10 But i did not find the reason, why we should explicitly call the desturctor?

推荐答案

通常， new ed对象在 delete 被调用。删除从来没有调用为放置new，所以你必须弄清楚什么时候自己破坏对象，并明确这样做。

Normally, newed objects are destructed when delete is called. delete is never called for placement new, so you have to figure out when to destruct the object yourself, and do so explicitly.

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