Recursive Hash map - unhandled exception help

[krithigal]

Hi
I am using a recursive map. The class and data structures are given below.
While trying to insert a node in hash map I am getting unhandled exception.

typedef struct Item
{
    char *text;
    char *Id;
}ITEM;

class Node;

typedef class Node NODE;

class Node
{
public:

             hash_map<const char*,NODE *> nodeMap;
    ITEM *item;
};

class Tree 
{
public:
    Node *nodePtr;
};

insert()
{
     Node N1;
    N1.item->text = "t1";
  N1.item->Id = "A1";
  N1.nodeMap.insert(pair<const char *, NODE *> ("A1", tnode));
  months.insert(pair <const char*, char *> ("january","feb")); 
 p1 = N1.nodeMap.find("A1");
 insnode = p1->second;


    Node *N2;
   N2 = (NODE *) malloc(sizeof(NODE));
   Item it1;
  it1.text = (char *) malloc(sizeof(char) *10);
  strcpy(it1.text, "ABC");
  N2->item = &it1;
 N2->nodeMap.insert(pair<const char *, NODE *> ("A1", tnode));
 p1 = N1.nodeMap.find("A1");
insnode = p1->second;


}

main()
{
   insert();
}

In the above code block if I try to insert into the hash_map of N1 it is working. But in case of a pointer N2 , the insertion fails with unhandled exception.

Can you pl. let me know why does this occur and how to resolve the same.

Your help will be highly appreciated

regards
krithiga