Thread: seg-faulting w/linked list but dont know why

For some reason when doing anything with my linked lists I am getting a seg-fault. All of my linked list functions check to see if the head is NULL before adding or doing anything in the list to prevent seg-faults but for some reason that check in itself is causing the seg fault. Hopefully my code can clarify that...

Code:

void Laundry::addClean(Clothing c){
   if(c_head == NULL){
             c_head = new node<Clothing>(c, NULL);
   }
   else
   {   
      c_tail->setLink(new node<Clothing>(c, NULL));
      c_tail = c_tail->link();
   }
   clean++;
   
}

that is where I am getting the seg-fault... and in any other function that uses if(some_head == NULL). in my last project I was having this same problem and it was because I had typed if(some_head = NULL). this time tho I have no idea what is wrong. My pointer is declared in laundry.h like this:

Code:

private: 
           node <Clothing> * c_head;
           node <Clothing> * c_tail;

And my template node class:

Code:

template <class T>
class node{

  public:
         node(){linkfield = NULL;}
         node(T d, node *lf){datafield = d; linkfield = lf;}
  
  T data(){return datafield;}
  node * link(){return linkfield;}

  void setData(T d){datafield = d;}
  void setLink(node *lf){linkfield = lf;}
   
 private: 
           T datafield;
            node *linkfield;
};

I've been at this for a while so maybe it's just something I'm not seeing and a fresh set of eyes will help. At any rate thanks for looking