People interested in stamping out undefined / nondeterministic behavior / compiler warnings welcome bug reports from platforms that find new bugs.
They also are more conservative about including dependencies, and their code is much, much more maintainable over time.
Why not use a language that doesn't have such problems in the first put (hint, any language that is not C or C++).
Your comment is rudely dismissive of people giving you the product of their labor for free.
Their experience matches mine. It’s one of the reasons I appreciate projects like Net and OpenBSD, who actively keep old hardware around. They find bugs, by actually exercising their code base in unplanned ways (e.g. endian differences, alignment constraint differences).
It also could be that your code quality sucks and you’re writing something non-portable.