This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
Is numeric_limits<int>::radix required to be 2? 188.8.131.52 [numeric.limits.members] paragraph 23 specifies:
static constexpr int radix;
For integer types, specifies the base of the representation.
Rationale (November, 2016):
CWG felt that the current specification is sufficiently clear and there was no consensus for a change.