From c650f1106f3e8ee1966dcbc821128cdbbb1b378c Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 5 Feb 2015 15:53:32 +0200
Subject: [PATCH] Don't access waypoint and metric data if the router has no
 destination

---
 source/libr2c2/trainrouteplanner.cpp | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/source/libr2c2/trainrouteplanner.cpp b/source/libr2c2/trainrouteplanner.cpp
index dbe6035..0d0103c 100644
--- a/source/libr2c2/trainrouteplanner.cpp
+++ b/source/libr2c2/trainrouteplanner.cpp
@@ -213,15 +213,18 @@ TrainRoutePlanner::TrainRoutingInfo::TrainRoutingInfo(Train &t):
 	if(router)
 	{
 		destination = router->get_destination();
-		waypoints.resize(router->get_n_waypoints());
-		metrics.resize(waypoints.size()+1);
-		metrics[0] = &router->get_metric(-1);
-		for(unsigned i=0; i<waypoints.size(); ++i)
+		if(destination)
 		{
-			waypoints[i] = &router->get_waypoint(i);
-			metrics[i+1] = &router->get_metric(i);
+			waypoints.resize(router->get_n_waypoints());
+			metrics.resize(waypoints.size()+1);
+			metrics[0] = &router->get_metric(-1);
+			for(unsigned i=0; i<waypoints.size(); ++i)
+			{
+				waypoints[i] = &router->get_waypoint(i);
+				metrics[i+1] = &router->get_metric(i);
+			}
+			has_duration = router->get_trip_duration();
 		}
-		has_duration = router->get_trip_duration();
 	}
 
 	// If no maximum speed is specified, use a sensible default
-- 
2.43.0