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Work around Clang 3.8 bugs

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@288556 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2016-12-03 00:13:33 +00:00
parent a2ff798745
commit ac5c826faf
6 changed files with 62 additions and 47 deletions
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27
test/libcxx/utilities/variant/variant.variant/variant.assign/copy.pass.cpp
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@@ -10,6 +10,9 @@
// UNSUPPORTED: c++98, c++03, c++11, c++14
// Clang 3.8 doesn't generate constexpr special members correctly.
// XFAIL: clang-3.8
// <variant>
// template <class ...Types> class variant;
@@ -174,8 +177,32 @@ void test_copy_assignment_different_index() {
}
}
template <size_t NewIdx, class ValueType>
constexpr bool test_constexpr_assign_extension_imp(
std::variant<long, void*, int>&& v, ValueType&& new_value)
{
const std::variant<long, void*, int> cp(
std::forward<ValueType>(new_value));
v = cp;
return v.index() == NewIdx &&
std::get<NewIdx>(v) == std::get<NewIdx>(cp);
}
void test_constexpr_copy_assignment_extension() {
#ifdef _LIBCPP_VERSION
using V = std::variant<long, void*, int>;
static_assert(std::is_trivially_copyable<V>::value, "");
static_assert(std::is_trivially_copy_assignable<V>::value, "");
static_assert(test_constexpr_assign_extension_imp<0>(V(42l), 101l), "");
static_assert(test_constexpr_assign_extension_imp<0>(V(nullptr), 101l), "");
static_assert(test_constexpr_assign_extension_imp<1>(V(42l), nullptr), "");
static_assert(test_constexpr_assign_extension_imp<2>(V(42l), 101), "");
#endif
}
int main() {
test_copy_assignment_same_index();
test_copy_assignment_different_index();
test_copy_assignment_sfinae();
test_constexpr_copy_assignment_extension();
}

29
test/libcxx/utilities/variant/variant.variant/variant.assign/move.pass.cpp
View File

@@ -10,6 +10,9 @@
// UNSUPPORTED: c++98, c++03, c++11, c++14
// Clang 3.8 doesn't generate constexpr special members correctly.
// XFAIL: clang-3.8
// <variant>
// template <class ...Types> class variant;
@@ -160,8 +163,34 @@ void test_move_assignment_different_index() {
}
}
template <size_t NewIdx, class ValueType>
constexpr bool test_constexpr_assign_extension_imp(
std::variant<long, void*, int>&& v, ValueType&& new_value)
{
std::variant<long, void*, int> v2(
std::forward<ValueType>(new_value));
const auto cp = v2;
v = std::move(v2);
return v.index() == NewIdx &&
std::get<NewIdx>(v) == std::get<NewIdx>(cp);
}
void test_constexpr_move_assignment_extension() {
#ifdef _LIBCPP_VERSION
using V = std::variant<long, void*, int>;
static_assert(std::is_trivially_copyable<V>::value, "");
static_assert(std::is_trivially_move_assignable<V>::value, "");
static_assert(test_constexpr_assign_extension_imp<0>(V(42l), 101l), "");
static_assert(test_constexpr_assign_extension_imp<0>(V(nullptr), 101l), "");
static_assert(test_constexpr_assign_extension_imp<1>(V(42l), nullptr), "");
static_assert(test_constexpr_assign_extension_imp<2>(V(42l), 101), "");
#endif
}
int main() {
test_move_assignment_same_index();
test_move_assignment_different_index();
test_move_assignment_sfinae();
test_constexpr_move_assignment_extension();
}