（C ++）使用链表时进程返回-1073741819（0xC0000005），但是该算法有效

该程序的目标是从列表中删除大于以下元素的所有元素。我设法使该程序执行此任务，但是这样做后立即崩溃，并且此后不打印列表，输出0xC0000005错误代码。

#include <iostream>
using namespace std;
class List{
    struct node{
        int data;
        node* next;
    };
    typedef struct node* nodePtr;
    nodePtr head;
    nodePtr curr;
    nodePtr temp;

public:
    List()
    {
        head=NULL;
        curr=NULL;
        temp=NULL;
    }
    void AddNode(int addData)
    {
        nodePtr n = new node;
        n->next = NULL;
        n->data = addData;
        if(head != NULL) {
            curr = head;
            while(curr->next != NULL) {
                curr = curr->next;
            }
            curr->next = n;
        }
        else
        {
            head = n;
        }
    };
    void DeleteNode(int delData)
    {
        nodePtr delPtr = NULL;
        temp = head;
        curr = head;
        while(curr != NULL && curr->data != delData) {
            temp = curr;
            curr = curr->next;
        }
        if(curr == NULL) {
            cout << delData << " is not in the list" << endl;
            delete delPtr;
        }
        else {
            delPtr = curr;
            curr = curr->next;
            temp->next = curr;
            if(delPtr == head) {
                head = head->next;
                temp = NULL;
            }
            delete delPtr;
            cout << delData << " was removed from the list" << endl;
        }
    };
    void PrintList()
    {   cout << "List: " << endl;
        curr = head;
        while (curr != NULL) {
            cout << curr->data << endl;
            curr = curr->next;
        }
    }
    void toss()
    {
        curr = head;
        while (curr != NULL) {

            if(curr->data>curr->next->data){
                    DeleteNode(curr->data);
                    curr = head;
            }
            else curr = curr->next;
            if(curr == NULL) break;
        }

    }
};
int main() {
    List list;
    int i;
    cout << "Input list values, stop input by inputting 0: " << endl;
    cin >> i;
    while(i != 0){
        list.AddNode(i);
        cin >> i; // 18 9 3 4 0 
}
    list.PrintList(); // 18 9 3 4
    list.toss(); // tosses 18 and 9
    list.PrintList(); // should output 3 4 
};

这是代码底部注释中的测试示例，它表明已删除了正确的元素，但第二次未打印出列表。

Input list values, stop input by inputting 0:
18
9
3
4
0
List:
18
9
3
4
18 was removed from the list
9 was removed from the list

Process returned -1073741819 (0xC0000005)   execution time : 6.699 s
Press any key to continue.

在这个问题上的任何输入或帮助，将不胜感激，谢谢！