Recently, we had a discussion in our team about undefined behaviour (UB) in C. For those unfamiliar: We say that a program has undefined behaviour when we write code where the language specification doesn't define what should happen during execution. That means compilers can do whatever they like if they encounter such code and there is no guarantee that execution will behave in a predictable way. Thus, undefined behaviour must be avoided at all cost as it not only makes programs misbehave but i...