Note that not all claims you find about UB on the internet are true. For example, in C, UB can not time-travel before observable behavior. And in general UB ca

Note that not all claims you find about UB on the internet are true. For example, in C, UB can not time-travel before observable behavior. And in general UB can not time-travel before any function call when the compiler can not show that the function returns to the caller (MSVC got this wrong though).