When you have ifs and for loops around, it maybe depend on arguments to the function, and also the return values of functions you call. You could say "warn if

When you have ifs and for loops around, it maybe depend on arguments to the function, and also the return values of functions you call. You could say "warn if there are any inputs, and any return values for any function I call, that can lead to a problem" but I suspect that would produce too many false positives.