diff -Naur ros-humble-nav2-waypoint-follower-1.1.9_org/plugins/input_at_waypoint.cpp ros-humble-nav2-waypoint-follower-1.1.9/plugins/input_at_waypoint.cpp
--- ros-humble-nav2-waypoint-follower-1.1.9_org/plugins/input_at_waypoint.cpp	2023-09-11 16:38:47.194459880 +0800
+++ ros-humble-nav2-waypoint-follower-1.1.9/plugins/input_at_waypoint.cpp	2023-09-11 16:39:58.863509758 +0800
@@ -49,7 +49,7 @@
   logger_ = node->get_logger();
   clock_ = node->get_clock();
 
-  double timeout;
+  double timeout = 0.0;
   std::string input_topic;
   nav2_util::declare_parameter_if_not_declared(
     node, plugin_name + ".timeout",