a3eac518e6
Quite a few libcxx tests seem to follow the format: #if _LIBCPP_STD_VER > X // Do test. #else // Empty test. #endif We should instead use the UNSUPPORTED lit directive to exclude the test on earlier C++ standards. This gives us a more accurate number of test passes for those standards and avoids unnecessary conflicts with other lit directives on the same tests. Reviewers: bcraig, ericwf, mclow.lists Differential revision: http://reviews.llvm.org/D20730 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@271108 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: c++98, c++03, c++11
|
|
// XFAIL: libcpp-no-exceptions
|
|
// <optional>
|
|
|
|
// optional<T>& operator=(optional<T>&& rhs)
|
|
// noexcept(is_nothrow_move_assignable<T>::value &&
|
|
// is_nothrow_move_constructible<T>::value);
|
|
|
|
#include <experimental/optional>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
using std::experimental::optional;
|
|
|
|
struct X
|
|
{
|
|
static bool throw_now;
|
|
|
|
X() = default;
|
|
X(X&&)
|
|
{
|
|
if (throw_now)
|
|
throw 6;
|
|
}
|
|
X& operator=(X&&) noexcept
|
|
{
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
struct Y {};
|
|
|
|
bool X::throw_now = false;
|
|
|
|
int main()
|
|
{
|
|
{
|
|
static_assert(std::is_nothrow_move_assignable<optional<int>>::value, "");
|
|
optional<int> opt;
|
|
constexpr optional<int> opt2;
|
|
opt = std::move(opt2);
|
|
static_assert(static_cast<bool>(opt2) == false, "");
|
|
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
|
|
}
|
|
{
|
|
optional<int> opt;
|
|
constexpr optional<int> opt2(2);
|
|
opt = std::move(opt2);
|
|
static_assert(static_cast<bool>(opt2) == true, "");
|
|
static_assert(*opt2 == 2, "");
|
|
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
|
|
assert(*opt == *opt2);
|
|
}
|
|
{
|
|
optional<int> opt(3);
|
|
constexpr optional<int> opt2;
|
|
opt = std::move(opt2);
|
|
static_assert(static_cast<bool>(opt2) == false, "");
|
|
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
|
|
}
|
|
{
|
|
optional<int> opt(3);
|
|
constexpr optional<int> opt2(2);
|
|
opt = std::move(opt2);
|
|
static_assert(static_cast<bool>(opt2) == true, "");
|
|
static_assert(*opt2 == 2, "");
|
|
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
|
|
assert(*opt == *opt2);
|
|
}
|
|
{
|
|
static_assert(!std::is_nothrow_move_assignable<optional<X>>::value, "");
|
|
optional<X> opt;
|
|
optional<X> opt2(X{});
|
|
assert(static_cast<bool>(opt2) == true);
|
|
try
|
|
{
|
|
X::throw_now = true;
|
|
opt = std::move(opt2);
|
|
assert(false);
|
|
}
|
|
catch (int i)
|
|
{
|
|
assert(i == 6);
|
|
assert(static_cast<bool>(opt) == false);
|
|
}
|
|
}
|
|
{
|
|
static_assert(std::is_nothrow_move_assignable<optional<Y>>::value, "");
|
|
}
|
|
}
|