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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17 10 11 // clang-cl and cl currently don't support [[no_unique_address]] 12 // XFAIL: msvc 13 14 // [algorithms.results]/1 15 // Each of the class templates specified in this subclause has the template parameters, 16 // data members, and special members specified below, and has no base classes or members 17 // other than those specified. 18 19 #include <algorithm> 20 21 #include "test_macros.h" 22 23 struct Empty {}; 24 struct Empty2 {}; 25 26 static_assert(sizeof(std::ranges::in_fun_result<Empty, int>) == sizeof(int)); 27 static_assert(sizeof(std::ranges::in_fun_result<int, Empty>) == sizeof(int)); 28 static_assert(sizeof(std::ranges::in_fun_result<Empty, Empty>) == 2); 29 30 static_assert(sizeof(std::ranges::in_in_result<Empty, int>) == sizeof(int)); 31 static_assert(sizeof(std::ranges::in_in_result<int, Empty>) == sizeof(int)); 32 static_assert(sizeof(std::ranges::in_in_result<Empty, Empty>) == 2); 33 34 static_assert(sizeof(std::ranges::in_out_result<Empty, int>) == sizeof(int)); 35 static_assert(sizeof(std::ranges::in_out_result<int, Empty>) == sizeof(int)); 36 static_assert(sizeof(std::ranges::in_out_result<Empty, Empty2>) == sizeof(char)); 37 38 static_assert(sizeof(std::ranges::in_in_out_result<Empty, int, int>) == 2 * sizeof(int)); 39 static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, int>) == 2 * sizeof(int)); 40 static_assert(sizeof(std::ranges::in_in_out_result<int, int, Empty>) == 2 * sizeof(int)); 41 static_assert(sizeof(std::ranges::in_in_out_result<char, Empty, Empty>) == 2); 42 static_assert(sizeof(std::ranges::in_in_out_result<Empty, char, Empty>) == 2); 43 static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, char>) == 2); 44 static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, Empty2>) == sizeof(int)); 45 static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, Empty>) == 3); 46 47 static_assert(sizeof(std::ranges::in_out_out_result<Empty, int, int>) == 2 * sizeof(int)); 48 static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, int>) == 2 * sizeof(int)); 49 static_assert(sizeof(std::ranges::in_out_out_result<int, int, Empty>) == 2 * sizeof(int)); 50 static_assert(sizeof(std::ranges::in_out_out_result<char, Empty, Empty>) == 2); 51 static_assert(sizeof(std::ranges::in_out_out_result<Empty, char, Empty>) == 2); 52 static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, char>) == 2); 53 static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, Empty2>) == sizeof(int)); 54 static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, Empty>) == 3); 55 56 #if TEST_STD_VER >= 23 57 58 static_assert(sizeof(std::ranges::in_value_result<Empty, int>) == sizeof(int)); 59 static_assert(sizeof(std::ranges::in_value_result<int, Empty>) == sizeof(int)); 60 static_assert(sizeof(std::ranges::in_value_result<Empty, Empty2>) == sizeof(Empty2)); 61 62 #endif // TEST_STD_VER 63 64 // In min_max_result both elements have the same type, so they can't have the same address. 65 // So the only way to test that [[no_unique_address]] is used is to have it in another struct 66 struct MinMaxNoUniqueAddress { 67 int a; 68 TEST_NO_UNIQUE_ADDRESS std::ranges::min_max_result<Empty> b; 69 int c; 70 }; 71 72 static_assert(sizeof(std::ranges::min_max_result<Empty>) == 2); 73 static_assert(sizeof(MinMaxNoUniqueAddress) == 8); 74 75 static_assert(sizeof(std::ranges::in_found_result<Empty>) == sizeof(bool)); 76