79 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// clang-cl and cl currently don't support [[no_unique_address]]12// XFAIL: msvc13 14// [algorithms.results]/115// 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 members17// other than those specified.18 19#include <algorithm>20 21#include "test_macros.h"22 23struct Empty {};24struct Empty2 {};25 26static_assert(sizeof(std::ranges::in_fun_result<Empty, int>) == sizeof(int));27static_assert(sizeof(std::ranges::in_fun_result<int, Empty>) == sizeof(int));28static_assert(sizeof(std::ranges::in_fun_result<Empty, Empty>) == 2);29 30static_assert(sizeof(std::ranges::in_in_result<Empty, int>) == sizeof(int));31static_assert(sizeof(std::ranges::in_in_result<int, Empty>) == sizeof(int));32static_assert(sizeof(std::ranges::in_in_result<Empty, Empty>) == 2);33 34static_assert(sizeof(std::ranges::in_out_result<Empty, int>) == sizeof(int));35static_assert(sizeof(std::ranges::in_out_result<int, Empty>) == sizeof(int));36static_assert(sizeof(std::ranges::in_out_result<Empty, Empty2>) == sizeof(char));37 38static_assert(sizeof(std::ranges::in_in_out_result<Empty, int, int>) == 2 * sizeof(int));39static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, int>) == 2 * sizeof(int));40static_assert(sizeof(std::ranges::in_in_out_result<int, int, Empty>) == 2 * sizeof(int));41static_assert(sizeof(std::ranges::in_in_out_result<char, Empty, Empty>) == 2);42static_assert(sizeof(std::ranges::in_in_out_result<Empty, char, Empty>) == 2);43static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, char>) == 2);44static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, Empty2>) == sizeof(int));45static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, Empty>) == 3);46 47static_assert(sizeof(std::ranges::in_out_out_result<Empty, int, int>) == 2 * sizeof(int));48static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, int>) == 2 * sizeof(int));49static_assert(sizeof(std::ranges::in_out_out_result<int, int, Empty>) == 2 * sizeof(int));50static_assert(sizeof(std::ranges::in_out_out_result<char, Empty, Empty>) == 2);51static_assert(sizeof(std::ranges::in_out_out_result<Empty, char, Empty>) == 2);52static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, char>) == 2);53static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, Empty2>) == sizeof(int));54static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, Empty>) == 3);55 56#if _LIBCPP_STD_VER >= 2357static_assert(sizeof(std::ranges::out_value_result<Empty, int>) == sizeof(int));58static_assert(sizeof(std::ranges::out_value_result<int, Empty>) == sizeof(int));59static_assert(sizeof(std::ranges::out_value_result<Empty, Empty>) == 2);60 61static_assert(sizeof(std::ranges::in_value_result<Empty, int>) == sizeof(int));62static_assert(sizeof(std::ranges::in_value_result<int, Empty>) == sizeof(int));63static_assert(sizeof(std::ranges::in_value_result<Empty, Empty2>) == sizeof(Empty2));64 65#endif // TEST_STD_VER66 67// In min_max_result both elements have the same type, so they can't have the same address.68// So the only way to test that [[no_unique_address]] is used is to have it in another struct69struct MinMaxNoUniqueAddress {70 int a;71 TEST_NO_UNIQUE_ADDRESS std::ranges::min_max_result<Empty> b;72 int c;73};74 75static_assert(sizeof(std::ranges::min_max_result<Empty>) == 2);76static_assert(sizeof(MinMaxNoUniqueAddress) == 8);77 78static_assert(sizeof(std::ranges::in_found_result<Empty>) == sizeof(bool));79