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-no-concepts
11 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
12 
13 // clang-cl and cl currently don't support [[no_unique_address]]
14 // XFAIL: msvc
15 
16 // [algorithms.results]/1
17 //   Each of the class templates specified in this subclause has the template parameters,
18 //   data members, and special members specified below, and has no base classes or members
19 //   other than those specified.
20 
21 #include <algorithm>
22 
23 struct Empty {};
24 
25 static_assert(sizeof(std::ranges::in_in_result<Empty, int>) == sizeof(int));
26 static_assert(sizeof(std::ranges::in_in_result<int, Empty>) == sizeof(int));
27 static_assert(sizeof(std::ranges::in_in_result<Empty, Empty>) == 2 * sizeof(Empty));
28