std::undeclare_reachable

 

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定义于头文件 <memory>
template< class T > T* undeclare_reachable( T* p );		(since C++11) (removed in C++23)

移除对象的可达状态，如果该状态之前被 std::declare_reachable 设置，则移除由指针 p 引用的对象的可达状态。如果对象被多次声明为可达，则需要相等数量的 undeclare_reachable 调用才能移除此状态。一旦对象未被声明为可达且没有指针引用它，则可能被垃圾回收器回收或被泄漏检测器报告为泄漏。

参数

p

-

指向先前声明为可达且自那时起未被销毁的对象的指针

返回值

p 的安全派生副本。

异常

不抛出任何异常。

参见

declare_reachable (C++11)(C++23 中移除)

声明对象不可回收 (函数)