| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <tuple> |
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| 10 | |
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| 11 | // template <class... Types> class tuple; |
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| 12 | |
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| 13 | // template <size_t I, class... Types> |
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| 14 | // struct tuple_element<I, tuple<Types...> > |
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| 15 | // { |
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| 16 | // typedef Ti type; |
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| 17 | // }; |
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| 18 | |
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| 19 | // UNSUPPORTED: c++03 |
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| 20 | |
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| 21 | #include <tuple> |
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| 22 | |
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| 23 | using T = std::tuple<int, long, void*>; |
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| 24 | using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}} |
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| 25 | using E2 = typename std::tuple_element<3, T>::type; |
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| 26 | using E3 = typename std::tuple_element<4, T const>::type; // expected-error@*:* 2 {{static assertion failed}} |
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| 27 | |
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