Thread: Linked Lists error: m_deck undeclared identifier

My compiler's throwing a fit because m_deck is an undeclared identifier. But I think I DID declare it: Please tell me what you think from the following snippets:

I have declared card data structures in a card.h header file.
I have declared a list of cards as a nonmember function in my deck.h header file.

Code:

typedef std::list<s_card> cardList_t;

and I have declared a cardList_t named m_deck in my game.h header file.

Code:

cardList_t m_deck;

Then I use it in my game.cpp definition file.

Code:

void shuffleDeck()
{
	cardNodeptr cur = head;

	int x, y;

	for(int count=1; count<=52; count++)
	{
		x = 1+rand()%52;
		y = 1+rand()%52;

		m_deck.insert(y,m_deck.retrieve(x));
		m_deck.removeCard(x);
	}
}

Thanks as always for your time!