2 // { dg-do compile { target c++11 } }
7 struct t1{ constexpr t1(){} };
8 struct t2{ constexpr t2(){} };
14 constexpr tuple<t1,t2> Tup1(T1,T2);
15 constexpr tuple<t1,t1> Tup2(T1,T1);
16 constexpr auto a=get<0>(Tup1 ); //works fine
17 constexpr auto b=get<0>(Tup2 ); // error:
18 //'(const std::_Head_base<0ul, t1, true>*)(& Tup2)'
19 //is not a constant expression constexpr auto b=get<0>(Tup2 );