It would bring in whatever crap the standard libraries from the compiler or the system happen to have. And those libraries aren't written with the mindset of "

It would bring in whatever crap the standard libraries from the compiler or the system happen to have. And those libraries aren't written with the mindset of "when this code runs on an A380". Even most non-certified projects will grow their own standard library once they get past a certain size, and this is merely for convenience, consistency, and features.