(Mostly) Follow MISRA C Coding Standards #16
Description
MISRA C is a coding standard used by every major space organization (including NASA). Most even take more extreme measures with MISRA as the base.
Therefore, it would be a good idea for us to follow it as well. Unfortunately, the MISRA C ruleset costs money, so we can't access it in full. However, I have been able to find an incomplete list of rules here, which can be a good starting point.
There are a lot of rules, so I don't expect to exhaustively check every one. But if there is a rule that you see we are breaking, make a note here and we can fix it in a PR.