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Warning on advertise of std_mgs/Empty

asked 2014-01-24 01:45:07 -0500

Wolf gravatar image

Recently (maybe since some update...), whenever I advertise a topic of topic std_msgs/Empty I receive WARNING:

Advertising on topic [/topic_name] with an empty message definition. Some tools (e.g. rosbag) may not work correctly.

Can I safely ignore it? Was does it mean? I often use std_msgs/Empty as kind of signal for nodes to perform long running calculations to update their state.

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I have also just run into this problem, a recent update seems to have changed functionality.

Dave Coleman gravatar imageDave Coleman ( 2014-01-24 11:47:48 -0500 )edit
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Dave Coleman gravatar imageDave Coleman ( 2014-01-24 11:50:29 -0500 )edit

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answered 2014-01-28 11:04:13 -0500

Dirk Thomas gravatar image

updated 2014-01-28 11:04:32 -0500

The bug responsible for this warning has been fixed in gencpp. Please update your packages - ros-hydro-gencpp needs to be version 0.4.16 (or newer).

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Asked: 2014-01-24 01:45:07 -0500

Seen: 258 times

Last updated: Jan 28 '14