C++

参考

<ios>

ios_base

public member function
<ios> <iostream>

std::ios_base::~ios_base

virtual ~ios_base();
Destruct object
Before the object is destroyed, all callback functions registered with member register_callback are called with erase_event as first argument.

数据竞争

对象被修改。

异常安全

无异常保证： 绝不抛出异常。