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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <optional>
// ~optional();
#include <experimental/optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
using std::experimental::optional;
class X
{
public:
static bool dtor_called;
X() = default;
~X() {dtor_called = true;}
};
bool X::dtor_called = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
static_assert(std::is_trivially_destructible<T>::value, "");
static_assert(std::is_trivially_destructible<optional<T>>::value, "");
}
{
typedef double T;
static_assert(std::is_trivially_destructible<T>::value, "");
static_assert(std::is_trivially_destructible<optional<T>>::value, "");
}
{
typedef X T;
static_assert(!std::is_trivially_destructible<T>::value, "");
static_assert(!std::is_trivially_destructible<optional<T>>::value, "");
{
X x;
optional<X> opt{x};
assert(X::dtor_called == false);
}
assert(X::dtor_called == true);
}
#endif // _LIBCPP_STD_VER > 11
}
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