They're all YOLOing on the assumption that errors won't happen and doing the system programmer's favorite error handling scheme of calling abort(), then restart

They're all YOLOing on the assumption that errors won't happen and doing the system programmer's favorite error handling scheme of calling abort(), then restarting a process. That doesn't fly on an embedded device. Nobody seriously checks errno after every library call without a separate means to indicate a failure happened in the first place.