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
|
// Copyright (c) 2018 Andrey Semashev
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// The test verifies that atomic<T> has an implicit conversion constructor from T.
// This can only be tested in C++17 because it has mandated copy elision. Previous C++ versions
// also require atomic<> to have a copy or move constructor, which it does not.
#if __cplusplus >= 201703L
#include <boost/atomic.hpp>
#include <type_traits>
int main(int, char *[])
{
static_assert(std::is_convertible< int, boost::atomic< int > >::value, "boost::atomic<T> does not have an implicit constructor from T");
boost::atomic< short > a = 10;
(void)a;
return 0;
}
#else // __cplusplus >= 201703L
int main(int, char *[])
{
return 0;
}
#endif // __cplusplus >= 201703L
|
