错误将结构复制到同一类型的另一种

以下是C 片段，

struct node {
    struct shm_ipc_msg_s msg;
    struct node *next;
};
enqueue_shm_events(Queue *q, shm_ipc_msg *msg)
{
    struct node *temp = new node;
    temp->msg = msg;      // error here!!!!
    if (q->front == NULL)
       q->front = temp;
    else
       q->rear->next = temp;
}

错误：

error: no match for 'operator=' in 'temp->node::msg = msg'

任何人都可以帮助我纠正此错误

预先感谢