1// Copyright (c) 2018-2024 Antony Polukhin
2//
3// Distributed under the Boost Software License, Version 1.0. (See accompanying
4// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6#include <boost/pfr/tuple_size.hpp>
7
8class test_with_protected {
9protected:
10 int i;
11 char c;
12
13public:
14 double d;
15 float f;
16};
17
18int main() {
19#ifndef __cpp_lib_is_aggregate
20// TODO: No known way to detect protected fields
21# error No known way to detect protected fields.
22#endif
23
24 return boost::pfr::tuple_size<test_with_protected>::value;
25}
26
27

source code of boost/libs/pfr/test/core/compile-fail/protected_fields.cpp