| Eric Fiselier | 199bee0 | 2015-12-18 00:36:55 +0000 | [diff] [blame] | 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 | } |