使用“this"是否安全?初始化列表中的指针?

I have two classes with a parent-child relationship (the Parent class "has-a" Child class), and the Child class has a pointer back to the Parent. It would be nice to initialize the parent pointer upon construction of the child, as follows:

class Child;
class Parent;

class Child
{
public:
 Child (Parent* parent_ptr_) : parent_ptr(parent_ptr_) {};

private:
 Parent* parent_ptr;
};

class Parent
{
public:
    Parent() : child(this) {};

private:
    Child child;
}

现在，我知道人们建议不要在初始化列表中使用 this 和 C++ FAQ 说我会收到编译器警告(顺便说一句，在 VS2010 上，我没有收到警告)，但我真的更喜欢这个，然后调用一些 set 函数在 Parent 的构造函数中.我的问题是:

class Child
{
public:
 Child (Parent& parnet_ptr_) : parent_ptr(parent_ptr_) {};

private:
 Parent* parent_ptr;
};

class Parent
{
public:
    Parent() : child(*this) {};

private:
    Child child;
}