Ummm... yes? Sometimes you have to. I was looking into a bug about a year ago that was caused by the compiler I was using (Intel) wasn't properly saving the re

Ummm... yes? Sometimes you have to. I was looking into a bug about a year ago that was caused by the compiler I was using (Intel) wasn't properly saving the return address in some situations. This led to seemingly random crashes and thrashed memory. So yeah, "correctness of implementation" is something to worry about, you just haven't had to (yet).