关于#c语言#的问题：C6001疑惑

Question

C6001疑惑

    Node* pre = head;
    Node* cur = head->next;
    Node* tmp = NULL;

    while (cur != NULL)
    {
        if (cur->id != x)//警告    C6001    使用未初始化的内存“*cur”
                         //这不是很懂，循环条件都是cur非空了，为什么还是未初始化
        {
            pre = cur;
            cur = cur->next;
            continue;
        }
        tmp = cur;
        cur = cur->next;
        pre->next = cur;
        free(tmp);
    }

Answer 1

Node* cur = head->next;
这里要判断head是否合法