Do note that UB on integer overflow is (at least nowadays) more of a compiler wish for optimization reasons than it is technically necessary (your CPU will inde

Do note that UB on integer overflow is (at least nowadays) more of a compiler wish for optimization reasons than it is technically necessary (your CPU will indeed just wrap around if you don't live in the 80s anymore, but a C++ compiler might have assumed that won't happen for a signed loop index).