Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/variadic12.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// { dg-do compile { target c++11 } } // A tuple type template<typename... Args> struct tuple { }; // Determine if two types are the same template<typename T, typename U> struct is_same { static const bool value = false; }; template<typename T> struct is_same<T, T> { static const bool value = true; }; // Append 'T' to the end of Tuple template<typename T, typename Tuple> struct append_to_tuple; template<typename T, typename... Args> struct append_to_tuple<T, tuple<Args...> > { typedef tuple<Args..., T> type; }; // Reverse a sequence of arguments (and return the result as a tuple) template<typename... Args> struct reverse; template<typename T, typename... Args> struct reverse<T, Args...> { typedef typename append_to_tuple<T, typename reverse<Args...>::type>::type type; }; template<> struct reverse<> { typedef tuple<> type; }; int a0[is_same<reverse<>::type, tuple<> >::value? 1 : -1]; int a1[is_same<reverse<int>::type, tuple<int> >::value? 1 : -1]; int a2[is_same<reverse<char, int>::type, tuple<int, char> >::value? 1 : -1]; int a3[is_same<reverse<char, int, long>::type, tuple<long, int, char> >::value? 1 : -1];