获取在操作符new中分配的对象类型 [英] Get type of object being allocated in operator new

问题描述

有没有办法获取在操作符new中分配的对象类型？

Is there a way to get type of object being allocated in operator new?

我的意思是：

void* BaseClass::operator new(size_t size)
{
    void* result = ::operator new(size);

    //Get type of object that's being allocated

    return result;
}

推荐答案

这个数据。 operator new 只是在给定大小的情况下分配原始内存，只有 new 操作符调用知道构造对象的类型分配的内存。

There is no mechanism to get this data. operator new just allocates raw memory given a size, and only the new operator call knows the type to construct the object into the allocated memory.

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