Bug report

Required Info:

• Operating System:
  • Ubuntu Bionic 18.04 (as in Nvidia OpenGL Docker image)
• Installation type:
  • Binary (debs)
• Version or commit hash:
  • Crystal pre-release.
• DDS implementation:
  • ADLink OpenSplice 6.9
• Client library (if applicable):
  • N/A

Steps to reproduce issue

On any node, set a parameter with a string value containing a non-ASCII character:

ros2 param set /talker value 'añd'

Now, attempt to retrieve that same parameter

ros2 param get /talker value

Expected behavior

Either ros2 param get succesfully retrieving the value or ros2 param set complaining about the invalid value. Since wstrings are not fully supported yet (see design proposal), I'm inclined for the latter.

Actual behavior

CLI segfaults.