27 	cl->head = NULL;  in init_cirlist()
40 		assert(cl->head == NULL);  in cl_insert_tail()
41 		cl->head = new;  in cl_insert_tail()
42 		cl->head->next = cl->head;  in cl_insert_tail()
43 		cl->head->prev = cl->head;  in cl_insert_tail()
47 			assert(cl->head->next == cl->head);  in cl_insert_tail()
48 			assert(cl->head->prev == cl->head);  in cl_insert_tail()
49 			cl->head->next = new;  in cl_insert_tail()
50 			cl->head->prev = new;  in cl_insert_tail()
51 			new->next = cl->head;  in cl_insert_tail()
52 			new->prev = cl->head;  in cl_insert_tail()
54 			assert(cl->head->next != cl->head);  in cl_insert_tail()
55 			assert(cl->head->prev != cl->head);  in cl_insert_tail()
57 			new->next = cl->head;  in cl_insert_tail()
58 			new->prev = (cl->head)->prev;  in cl_insert_tail()
59 			cl->head->prev->next = new;  in cl_insert_tail()
60 			cl->head->prev = new;  in cl_insert_tail()
73 		assert(cl->head == NULL);  in cl_remove_head()
77 		assert(cl->head->next == cl->head);  in cl_remove_head()
78 		assert(cl->head->prev == cl->head);  in cl_remove_head()
79 		oldhead = cl->head;  in cl_remove_head()
80 		cl->head = NULL;  in cl_remove_head()
83 		oldhead = cl->head;  in cl_remove_head()
87 		cl->head = newhead;  in cl_remove_head()
90 		assert(cl->head->next != cl->head);  in cl_remove_head()
91 		assert(cl->head->prev != cl->head);  in cl_remove_head()
92 		oldhead = cl->head;  in cl_remove_head()
96 		cl->head = newhead;  in cl_remove_head()