X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=osm.c;h=a9c499e69152183d7d2545162a770f9f15535d59;hb=c343d14479295d517ae64ccee5a7e83d3ce0fc42;hp=862f7fbb52012cdcf76221a15879cdc60beace04;hpb=9e0796f5be17bd5e65c31865cac25d38c8b2a0fb;p=leo.git

diff --git a/osm.c b/osm.c
index 862f7fb..a9c499e 100644
--- a/osm.c
+++ b/osm.c
@@ -382,7 +382,7 @@ static void mpg_walk_boundary(struct osm_multipolygon *m, bool inner)
 	  clist_init(&b->nodes);
 
 	  struct mpg_vertex *w = v;
-	  while (!w->visited)
+	  while (w && !w->visited)
 	    {
 	      w->visited = 1;
 	      struct osm_ref *f = mp_alloc(osm_this->pool, sizeof(*f));
@@ -412,7 +412,9 @@ static void mpg_walk_boundary(struct osm_multipolygon *m, bool inner)
 	      w = dest;
 	    }
 
-	  if (w != v)
+	  if (!w)
+	    osm_obj_warn(&mpg_current->o, "Boundary not closed");
+	  else if (w != v)
 	    osm_obj_warn(&mpg_current->o, "Boundary not closed at node %ju", (uintmax_t) w->o->id);
 
 	  struct osm_ref *f = mp_alloc(osm_this->pool, sizeof(*f));