IIRC the point was that there was no sequence point between argument evaluation, so for example f(++i, ++i) was UB. Or maybe it was only for builtin operators?
Cppreference is not authoritative[1], but seems to support my recollection. In fact it states that the f(++i, ++i) was UB till C++17.
Cppreference is not authoritative[1], but seems to support my recollection. In fact it states that the f(++i, ++i) was UB till C++17.
[1] https://en.cppreference.com/w/cpp/language/eval_order.html, Pre C++11 Ordering Rules, point (2).