[tialaramex]

This is a classic example of why overflow instead of being defined (as some people want) as wrapping (since that's what the CPU naturally does for basic arithmetic), it should be an error, and if you didn't handle it (and in many cases you hadn't even realised it could happen so why would you?) thus fatal.

If the report runs and says something like "Fatal: Overflow while multiplying customer_space * repl_factor. Consider floating point numbers or a larger integer type" - you'd go "Oops" fix the bug and run it again.