| 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, c++17 |
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| 10 | |
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| 11 | // <array> |
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| 12 | |
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| 13 | // LWG-3382 NTTP for pair and array: |
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| 14 | // Two values a1 and a2 of type array<T, N> are template-argument-equivalent if and only if each pair of corresponding |
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| 15 | // elements in a1 and a2 are template-argument-equivalent. |
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| 16 | |
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| 17 | #include <array> |
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| 18 | |
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| 19 | #include <type_traits> |
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| 20 | |
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| 21 | namespace test_full_type { |
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| 22 | template <class T, std::size_t S, std::array<T, S> A> |
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| 23 | struct test : std::false_type {}; |
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| 24 | |
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| 25 | template <> |
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| 26 | struct test<int, 3, std::array<int, 3>{1, 2, 3}> : std::true_type {}; |
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| 27 | |
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| 28 | static_assert(!test<int*, 4, std::array<int*, 4>{}>::value); |
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| 29 | static_assert(!test<int*, 3, std::array<int*, 3>{}>::value); |
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| 30 | static_assert(!test<int, 3, std::array<int, 3>{}>::value); |
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| 31 | static_assert(!test<int, 3, std::array<int, 3>{1}>::value); |
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| 32 | static_assert(!test<int, 3, std::array<int, 3>{1, 2}>::value); |
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| 33 | static_assert(!test<long, 3, std::array<long, 3>{1, 2, 3}>::value); |
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| 34 | static_assert(!test<unsigned int, 3, std::array<unsigned int, 3>{1, 2, 3}>::value); |
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| 35 | static_assert(test<int, 3, std::array<int, 3>{1, 2, 3}>::value); |
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| 36 | } // namespace test_full_type |
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| 37 | |
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| 38 | namespace test_ctad { |
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| 39 | template <std::array A> |
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| 40 | struct test : std::false_type {}; |
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| 41 | |
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| 42 | template <> |
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| 43 | struct test<std::array<int, 3>{4, 5, 6}> : std::true_type {}; |
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| 44 | |
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| 45 | static_assert(!test<std::array<int*, 4>{}>::value); |
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| 46 | static_assert(!test<std::array<int*, 3>{}>::value); |
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| 47 | static_assert(!test<std::array<int, 3>{}>::value); |
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| 48 | static_assert(!test<std::array<int, 3>{4}>::value); |
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| 49 | static_assert(!test<std::array<int, 3>{4, 5}>::value); |
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| 50 | static_assert(!test<std::array<long, 3>{4, 5, 6}>::value); |
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| 51 | static_assert(!test<std::array<unsigned int, 3>{4, 5, 6}>::value); |
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| 52 | static_assert(test<std::array<int, 3>{4, 5, 6}>::value); |
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| 53 | } // namespace test_ctad |
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| 54 | |
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| 55 | namespace test_auto { |
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| 56 | template <auto A> |
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| 57 | struct test : std::false_type {}; |
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| 58 | |
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| 59 | template <> |
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| 60 | struct test<std::array<int, 3>{7, 8, 9}> : std::true_type {}; |
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| 61 | |
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| 62 | static_assert(!test<std::array<int*, 4>{}>::value); |
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| 63 | static_assert(!test<std::array<int*, 3>{}>::value); |
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| 64 | static_assert(!test<std::array<int, 3>{}>::value); |
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| 65 | static_assert(!test<std::array<int, 3>{7}>::value); |
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| 66 | static_assert(!test<std::array<int, 3>{7, 8}>::value); |
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| 67 | static_assert(!test<std::array<long, 3>{7, 8, 9}>::value); |
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| 68 | static_assert(!test<std::array<unsigned int, 3>{7, 8, 9}>::value); |
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| 69 | static_assert(test<std::array<int, 3>{7, 8, 9}>::value); |
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| 70 | } // namespace test_auto |
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| 71 | |
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