[joveian]

It isn't hard to do this manually in C, it is just that standard libraries still don't. Partly that is because there is often oneish way to do things that is general and often unsafe and a variety of ways to do things that are safe but more specific to a particular usage pattern. IMO this is also why floating point is popular; it is rarely the best solution to any particular situation but one solution that works ok is often considered better than 10 solutions that work better in partiular cases. Not that this is a good excuse in the case of bounds checking...