| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| // XFAIL: apple-clang-6.0 |
| // The Apple-6 compiler gets is_constructible<void ()> wrong. |
| |
| // template <class T, class... Args> |
| // struct is_constructible; |
| |
| #include <type_traits> |
| #include "test_macros.h" |
| |
| struct A |
| { |
| explicit A(int); |
| A(int, double); |
| #if __has_feature(cxx_access_control_sfinae) |
| private: |
| #endif |
| A(char); |
| }; |
| |
| class Abstract |
| { |
| virtual void foo() = 0; |
| }; |
| |
| class AbstractDestructor |
| { |
| virtual ~AbstractDestructor() = 0; |
| }; |
| |
| template <class T> |
| void test_is_constructible() |
| { |
| static_assert( (std::is_constructible<T>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert( std::is_constructible_v<T>, ""); |
| #endif |
| } |
| |
| template <class T, class A0> |
| void test_is_constructible() |
| { |
| static_assert(( std::is_constructible<T, A0>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert(( std::is_constructible_v<T, A0>), ""); |
| #endif |
| } |
| |
| template <class T, class A0, class A1> |
| void test_is_constructible() |
| { |
| static_assert(( std::is_constructible<T, A0, A1>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert(( std::is_constructible_v<T, A0, A1>), ""); |
| #endif |
| } |
| |
| template <class T> |
| void test_is_not_constructible() |
| { |
| static_assert((!std::is_constructible<T>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert((!std::is_constructible_v<T>), ""); |
| #endif |
| } |
| |
| template <class T, class A0> |
| void test_is_not_constructible() |
| { |
| static_assert((!std::is_constructible<T, A0>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert((!std::is_constructible_v<T, A0>), ""); |
| #endif |
| } |
| |
| int main() |
| { |
| test_is_constructible<int> (); |
| test_is_constructible<int, const int> (); |
| test_is_constructible<A, int> (); |
| test_is_constructible<A, int, double> (); |
| test_is_constructible<int&, int&> (); |
| |
| test_is_not_constructible<A> (); |
| #if __has_feature(cxx_access_control_sfinae) |
| test_is_not_constructible<A, char> (); |
| #else |
| test_is_constructible<A, char> (); |
| #endif |
| test_is_not_constructible<A, void> (); |
| test_is_not_constructible<void> (); |
| test_is_not_constructible<int&> (); |
| test_is_not_constructible<Abstract> (); |
| test_is_not_constructible<AbstractDestructor> (); |
| |
| // LWG 2560 -- postpone this test until bots updated |
| // test_is_not_constructible<void()> (); |
| // #if TEST_STD_VERS > 11 |
| // test_is_not_constructible<void() const> (); |
| // test_is_not_constructible<void() volatile> (); |
| // test_is_not_constructible<void() &> (); |
| // test_is_not_constructible<void() &&> (); |
| // #endif |
| } |