Is the issue with md5sums in ROS-1 fixed in ROS-2?
There is a known issue with ROS-1 that that algo to generate the md5-sums for messages does not consider array lengths. This means that message types which only differ in the length of an array member will have the same md5-sum. Does ROS-2 fix this?
Unless something changed recently, ROS 2 does not use MD5 hashes in any way in this part of the infrastructure. I'm not sure whether that qualifies as "the issue is fixed" though.
Not using md5 hashes seems like a sure-shot way to fix this issue :D
well .. technically it isn't I believe. It just completely side-steps it.
Some related discussion: ros2/ros2#1159.