Compiling Python with the -Os flag on the built-in arm linux is completely unstable (shot in the dark> _ <)

So, I had problems with python segfault on the embedded system for which we are developing. I can’t have my life tracking the problem. I recently tried compiling with -Os. It seems that it did a lot, many times worse. I'm just wondering if compiling with -Oswas stupid at all, and if there was any success with optimization -Os.

I fully understand the straws to understand this problem.