While implementing a FIFO I have used the following structure:

struct Node
{
    T info_;
    Node* link_;
    Node(T info, Node* link=0): info_(info), link_(link)
    {}
};

I think this a well known trick for lots of STL containers (for example for List). Is this a good practice? What it means for compiler when you say that Node has a member with a type of it's pointer? Is this a kind of infinite loop?

And finally, if this is a bad practice, how I could implement a better FIFO.

EDIT: People, this is all about implemenation. I am enough familiar with STL library, and know a plenty of containers from several libraries. Just I want to discuss with people who can gave a good implementation or a good advice.