1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// Copyright 2025 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/variant2/variant.hpp>
#include <boost/config/pragma_message.hpp>
#if !defined(__cpp_constexpr_dynamic_alloc) || __cpp_constexpr_dynamic_alloc < 201907L
BOOST_PRAGMA_MESSAGE("Skipping test because __cpp_constexpr_dynamic_alloc < 201907L")
int main() {}
#elif defined(BOOST_MSVC) && BOOST_MSVC < 1950
BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_MSVC < 1950")
int main() {}
#elif defined(BOOST_CLANG) && BOOST_CLANG_VERSION < 180000
BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_CLANG_VERSION < 180000")
int main() {}
#else
using namespace boost::variant2;
#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
struct X
{
};
struct Y
{
constexpr ~Y() {}
};
struct Z
{
~Z() {}
};
int main()
{
{
constexpr variant<X, Y, Z> v( X{} );
STATIC_ASSERT( v.index() == 0 );
}
{
constexpr variant<X, Y, Z> v( Y{} );
STATIC_ASSERT( v.index() == 1 );
}
}
#endif
|
