在C++中尝试添加到链表的开头时出现无限循环

#include <iostream>

struct Node {
    int data;
    Node* next;
};

void addToLinkedList(Node*& head, int newData) {
    Node* newNode = new Node;
    newNode->data = newData;
    newNode->next = head;
    head = newNode;
}

void printLinkedList(Node* head) {
    Node* current = head;
    while (current != nullptr) {
        std::cout << current->data << " ";
        current = current->next;
    }
    std::cout << std::endl;
}

int main() {
    Node* head = nullptr;

    // 添加节点到链表的开头
    addToLinkedList(head, 3);
    addToLinkedList(head, 2);
    addToLinkedList(head, 1);

    // 打印链表
    printLinkedList(head);

    return 0;
}