1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <tuple> 11 12 // template <class... Types> class tuple; 13 14 // template <size_t I, class... Types> 15 // const typename tuple_element<I, tuple<Types...> >::type&& 16 // get(const tuple<Types...>&& t); 17 18 // UNSUPPORTED: c++98, c++03 19 20 #include <tuple> 21 22 template <class T> void cref(T const&) {} 23 template <class T> void cref(T const&&) = delete; 24 25 std::tuple<int> const tup4() { return std::make_tuple(4); } 26 27 int main() 28 { 29 // LWG2485: tuple should not open a hole in the type system, get() should 30 // imitate [expr.ref]'s rules for accessing data members 31 { 32 cref(std::get<0>(tup4())); // expected-error {{call to deleted function 'cref'}} 33 } 34 } 35
