in sys/kern/init_main.c static void set_ilist_start_node() { i_list *ilist; ilist = NULL; } SYSINIT(ilist_init, SI_SUB_TUNABLES, SI_ORDER_ANY, set_ilist_start_node, NULL) when I run 'make'... ../../../kern/init_main.c:276: warning: function declaration isn't a prototype *** Error code 1