1 //-----------------------------------------------------------------------------
2 // boost-libs variant/test/issue42.cpp source file
3 // See http://www.boost.org for updates, documentation, and revision history.
4 //-----------------------------------------------------------------------------
5 //
6 // Copyright (c) 2018-2020 Antony Polukhin
7 //
8 // Distributed under the Boost Software License, Version 1.0. (See
9 // accompanying file LICENSE_1_0.txt or copy at
10 // http://www.boost.org/LICENSE_1_0.txt)
11
12 // Test case from https://github.com/boostorg/variant/issues/42
13
14 #include <boost/variant.hpp>
15 #include <map>
16 #include <memory>
17 #include <vector>
18
19
20
21 #ifdef BOOST_NO_CXX11_SMART_PTR
22 template <class T> struct shared_ptr_like {};
23 typedef shared_ptr_like<boost::recursive_variant_> ptr_t;
24 #else
25 typedef std::shared_ptr<boost::recursive_variant_> ptr_t;
26 #endif
27
28 template <class F>
29 class func{};
30
main()31 int main() {
32 typedef boost::make_recursive_variant<
33 int,
34 ptr_t
35 >::type node;
36
37 node x = 1;
38 (void)x;
39
40
41 typedef boost::make_recursive_variant<
42 std::string, int, double, bool,
43 ptr_t,
44 std::map<const std::string, boost::recursive_variant_>,
45 std::vector<boost::recursive_variant_>
46 >::type node2;
47
48 node2 x2 = 1;
49 (void)x2;
50
51
52 typedef boost::make_recursive_variant<
53 int,
54 func<boost::recursive_variant_(*)(boost::recursive_variant_&, const boost::recursive_variant_&)>,
55 boost::recursive_variant_&(*)(boost::recursive_variant_, boost::recursive_variant_*),
56 ptr_t
57 >::type node3;
58
59 node3 x3 = func<node3(*)(node3&, const node3&)>();
60 (void)x3;
61 }
62