r2b3 ros2param crashes with `list /` about demos

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From @wjwwood on September 13, 2017 0:55

I don't get this on my from source build, using master, pulled just about an hour ago.

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From @wjwwood on September 13, 2017 0:56

Were you running anything else at the time?

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From @dirk-thomas on September 13, 2017 0:59

Please move the ticket to the repo containing the failing script: https://github.com/ros2/demos/blob/6363be2efe2fea799d92bc22a66e776b2ca9c5d0/demo_nodes_cpp/src/parameters/ros2param.cpp

Also not that the C++ implementation of this command line tool is kind of EOL and is supposed to be replaced by a Python tool within the ros2cli repo. So I would suggest not to spend time on it.

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From @mikaelarguedas on September 13, 2017 0:59

hmm looks like it happens with "/" I tried random other names and if the node doesnt exist I get service not available, waiting again...

Were you running anything else at the time?

I can reproduce the error above regardless of if another node with parameter server is running or not

While I agree the crash is bad, this I don't really see any use case for an empty node name (resulting in a FQN "/")

[sloretz]

Closing with label wontfix since ros2param tool is EOL and will be replaced.