bool.pass.cpp revision 01afa5c6e407e985d9643707d7b7ab1384bd9317 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <optional>
11
12// constexpr explicit optional<T>::operator bool() const noexcept;
13
14#include <optional>
15#include <type_traits>
16#include <cassert>
17
18int main()
19{
20#if _LIBCPP_STD_VER > 11
21    {
22        constexpr std::optional<int> opt;
23        static_assert(!opt, "");
24    }
25    {
26        constexpr std::optional<int> opt(0);
27        static_assert(opt, "");
28    }
29#endif  // _LIBCPP_STD_VER > 11
30}
31