Index: trunk/src/const.h
===================================================================
--- trunk/src/const.h	(revision 12127)
+++ trunk/src/const.h	(revision 12128)
@@ -80,6 +80,7 @@
 	PCB_TYPE_NET           = 0x40000, /* used to select whole net. */
 
 	PCB_TYPE_ARC_POINT     = 0x80000,
+	PCB_TYPE_PADSTACK      = 0x100000,
 
 	/* groups/properties */
 	PCB_TYPEMASK_PIN       = (PCB_TYPE_VIA | PCB_TYPE_PIN | PCB_TYPE_SUBC_PART),
Index: trunk/src/obj_padstack_list.h
===================================================================
--- trunk/src/obj_padstack_list.h	(revision 12127)
+++ trunk/src/obj_padstack_list.h	(revision 12128)
@@ -33,7 +33,7 @@
 	pcb_cardinal_t proto;          /* reference to a pcb_padstack_proto_t within pcb_data_t */
 	pcb_coord_t x, y;
 	struct {
-		int used;
+		unsigned long used;
 		char *shape;                 /* indexed by layer ID */
 	} thermal;
 	gdl_elem_t link;               /* a padstack is in a list in pcb_data_t as a global object */
Index: trunk/src_plugins/io_lihata/write.c
===================================================================
--- trunk/src_plugins/io_lihata/write.c	(revision 12127)
+++ trunk/src_plugins/io_lihata/write.c	(revision 12128)
@@ -586,7 +586,24 @@
 
 static lht_node_t *build_padstack(pcb_padstack_t *ps)
 {
-	return NULL;
+	char buff[128];
+	lht_node_t *obj, *thr;
+	unsigned long n;
+
+	sprintf(buff, "padstack_ref.%ld", ps->ID);
+	obj = lht_dom_node_alloc(LHT_HASH, buff);
+
+	lht_dom_hash_put(obj, build_attributes(&ps->Attributes));
+	lht_dom_hash_put(obj, build_flags(&ps->Flags, PCB_TYPE_PADSTACK, ps->intconn));
+
+	lht_dom_hash_put(obj, build_textf("proto", "%ld", (long int)ps->proto));
+	lht_dom_hash_put(obj, build_textf("x", CFMT, ps->x));
+	lht_dom_hash_put(obj, build_textf("y", CFMT, ps->y));
+	lht_dom_hash_put(obj, thr = lht_dom_node_alloc(LHT_LIST, "thermal"));
+	for(n = 0; n < ps->thermal.used; n++)
+		lht_dom_list_append(thr, build_textf("t", "%d", ps->thermal.shape[n]));
+
+	return obj;
 }
 
 static lht_node_t *build_layer_stack(pcb_board_t *pcb)