Is using unsigned integer overflow good practice?
c, c++
Solution
Unsigned integer overflow (in the shape of wrap-around) is routinely taken advantage of in hashing functions, and has been since the year dot.
Problem
I was reading the C Standard the other day, and noticed that unlike signed integer overflow (which is undefined), unsigned integer overflow is well defined. I've seen it used in a lot of code for maximums, etc. but given the voodoos about overflow, is this considered good programming practice? Is it in anyway insecure? I know that a lot of modern languages like Python do not support it- instead they continue to extend the size of large numbers.