Index: abstract.c
===================================================================
--- abstract.c	(revision 690)
+++ abstract.c	(revision 691)
@@ -39,6 +39,15 @@
 	htsp_init(&abs->nets, strhash, strkeyeq);
 }
 
+/* Initialize an object by setting the common header fields; the only purpose
+   of this function is to get compiler warnings at every caller when the header
+   is extended (because the number of args would be extended here) */
+csch_inline void csch_aobj_init(csch_ahdr_t *dst, csch_atype_t type)
+{
+	dst->type = type;
+	csch_attrib_init(&dst->attr);
+}
+
 csch_anet_t *csch_anet_get(csch_abstract_t *abs, const char *netname, int alloc)
 {
 	csch_anet_t *net;
@@ -48,6 +57,7 @@
 		return net;
 
 	net = calloc(sizeof(csch_anet_t), 1);
+	csch_aobj_init(&net->hdr, CSCH_ATYPE_NET);
 	net->netname = csch_strdup(netname);
 	htsp_set(&abs->nets, net->netname, net);
 	return net;