c++ 返回引用给一个不存在的对象

[c++]代码库

// LISTING 9.12 - Returning a Reference to a Nonexistent Object
#include <iostream>

int& GetInt();

int main() {
	int & rInt = GetInt();
	std::cout << "rInt = " << rInt << std::endl;

	return 0;
}

int & GetInt() {
	int nLocalInt = 25;

	return nLocalInt;
}