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
cref(T const &)22 template <class T> void cref(T const&) {}
23 template <class T> void cref(T const&&) = delete;
24
tup4()25 std::tuple<int> const tup4() { return std::make_tuple(4); }
26
main()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