1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
// { dg-options "-std=gnu++0x" } template<int... Values> struct sum; template<> struct sum<> { static const int value = 0; }; template<int Value, int... Values> struct sum<Value, Values...> { static const int value = Value + sum<Values...>::value; }; int a0[sum<>::value == 0? 1 : -1]; int a1[sum<1, 2, 3, 4, 5>::value == 15? 1 : -1];