71 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710 11// <array>12 13// LWG-3382 NTTP for pair and array:14// Two values a1 and a2 of type array<T, N> are template-argument-equivalent if and only if each pair of corresponding15// elements in a1 and a2 are template-argument-equivalent.16 17#include <array>18 19#include <type_traits>20 21namespace test_full_type {22template <class T, std::size_t S, std::array<T, S> A>23struct test : std::false_type {};24 25template <>26struct test<int, 3, std::array<int, 3>{1, 2, 3}> : std::true_type {};27 28static_assert(!test<int*, 4, std::array<int*, 4>{}>::value);29static_assert(!test<int*, 3, std::array<int*, 3>{}>::value);30static_assert(!test<int, 3, std::array<int, 3>{}>::value);31static_assert(!test<int, 3, std::array<int, 3>{1}>::value);32static_assert(!test<int, 3, std::array<int, 3>{1, 2}>::value);33static_assert(!test<long, 3, std::array<long, 3>{1, 2, 3}>::value);34static_assert(!test<unsigned int, 3, std::array<unsigned int, 3>{1, 2, 3}>::value);35static_assert(test<int, 3, std::array<int, 3>{1, 2, 3}>::value);36} // namespace test_full_type37 38namespace test_ctad {39template <std::array A>40struct test : std::false_type {};41 42template <>43struct test<std::array<int, 3>{4, 5, 6}> : std::true_type {};44 45static_assert(!test<std::array<int*, 4>{}>::value);46static_assert(!test<std::array<int*, 3>{}>::value);47static_assert(!test<std::array<int, 3>{}>::value);48static_assert(!test<std::array<int, 3>{4}>::value);49static_assert(!test<std::array<int, 3>{4, 5}>::value);50static_assert(!test<std::array<long, 3>{4, 5, 6}>::value);51static_assert(!test<std::array<unsigned int, 3>{4, 5, 6}>::value);52static_assert(test<std::array<int, 3>{4, 5, 6}>::value);53} // namespace test_ctad54 55namespace test_auto {56template <auto A>57struct test : std::false_type {};58 59template <>60struct test<std::array<int, 3>{7, 8, 9}> : std::true_type {};61 62static_assert(!test<std::array<int*, 4>{}>::value);63static_assert(!test<std::array<int*, 3>{}>::value);64static_assert(!test<std::array<int, 3>{}>::value);65static_assert(!test<std::array<int, 3>{7}>::value);66static_assert(!test<std::array<int, 3>{7, 8}>::value);67static_assert(!test<std::array<long, 3>{7, 8, 9}>::value);68static_assert(!test<std::array<unsigned int, 3>{7, 8, 9}>::value);69static_assert(test<std::array<int, 3>{7, 8, 9}>::value);70} // namespace test_auto71