| 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 | // UNSUPPORTED: c++03, c++11, c++14 |
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| 10 | |
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| 11 | // <tuple> |
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| 12 | |
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| 13 | // template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value; |
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| 14 | |
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| 15 | // Expect failures with a reference type, pointer type, and a non-tuple type. |
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| 16 | |
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| 17 | #include <tuple> |
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| 18 | |
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| 19 | void f() { |
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| 20 | (void)std::tuple_size_v<std::tuple<>&>; // expected-note {{requested here}} |
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| 21 | (void)std::tuple_size_v<int>; // expected-note {{requested here}} |
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| 22 | (void)std::tuple_size_v<std::tuple<>*>; // expected-note {{requested here}} |
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| 23 | // expected-error@*:* 3 {{implicit instantiation of undefined template}} |
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| 24 | } |
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| 25 | |
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