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