topic_tools/transfom: create publisher before subscriber, because cal…

…lback may use the publisher (#1669)
ros · Aug 3, 2020 · 1bd134f · 1bd134f
1 parent 60af411
commit 1bd134f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/tools/topic_tools/scripts/transform b/tools/topic_tools/scripts/transform
@@ -83,8 +83,8 @@ class TopicOp:
 
         self.output_class = roslib.message.get_message_class(args.output_type)
 
-        self.sub = rospy.Subscriber(input_topic, input_class, self.callback)
         self.pub = rospy.Publisher(args.output_topic, self.output_class, queue_size=1)
+        self.sub = rospy.Subscriber(input_topic, input_class, self.callback)
 
     def callback(self, m):
         if self.input_fn is not None: