Zig panics with integer overflow on a u8 counter: how do I get wrapping or saturating arithmetic?

There are two more families. Saturating operators clamp at the limits: +| on a u8 gives 250 + 10 = 255, useful for things like a PWM duty value or a signal level where wrapping would be wrong.

For values coming from outside, where overflow is a real error to handle, std.math.add(u8, a, b) returns error.Overflow instead of panicking, and the builtin @addWithOverflow gives you the wrapped result together with an overflow bit. The builtin’s exact form has changed between releases, so check the language reference for your compiler version.