I replaced the split implementation in
src/ros2/rosidl_typesupport/rosidl_typesupport_c/src/type_support_dispatch.cpp
It then crashed for me in very similar code found in
src/ros2/rmw_implementation/rmw_implementation/src/functions.cpp
After that everything was working for me. It appears to be a bug in the aarch64's libstdc++.6.0.24 -- at least that's the version that I have on my ARM64 machines; it came with GCC 7.2. I was unable to make a simple program that reproduced the problem. However, I see that there are some pending stringstream fixes for the next GCC version, e.g.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81338 .
For my fix I incorporated this split implementation:
https://stackoverflow.com/a/1493195/1208289
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