Thread: Copy Constructor crashing program

Hi All,

Need some help here with a copy constructor. I'm trying to copy a character array instance. Here's what i have so far:

Code:

listType::listType(const listType & init)	// Copy constructor
{
	nodeptr temp1, temp2, last;

	start = NULL;
	len = 0;

	temp1 = init.start;
	
	if (temp1 != NULL)
               {
    	    start = new ListNodeType;
	    len = 1;
	    start->next = start;
	    (start->info).key = (temp1->info).key;
	    last = start;
	    temp1 = temp1->next;			
                }
	while (temp1 != NULL)
               {
     	    temp2 = new ListNodeType;
     	    len++;
                    temp2->next = start;
     	    last->next = temp2;
     	    (temp2->info).key = (temp1->info).key;
     	    last = temp2;
	    temp1 = temp1->next;
                }
return;
}

Here's how I invoke the copy constructor:

Code:

listType list1(list);

When the copy constructor is invoked my program crashes. Don't know why.

Any help would be appreciated.