| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // is_standard_layout |
| |
| #include <type_traits> |
| #include "test_macros.h" |
| |
| template <class T> |
| void test_is_standard_layout() |
| { |
| static_assert( std::is_standard_layout<T>::value, ""); |
| static_assert( std::is_standard_layout<const T>::value, ""); |
| static_assert( std::is_standard_layout<volatile T>::value, ""); |
| static_assert( std::is_standard_layout<const volatile T>::value, ""); |
| #if TEST_STD_VER > 14 |
| static_assert( std::is_standard_layout_v<T>, ""); |
| static_assert( std::is_standard_layout_v<const T>, ""); |
| static_assert( std::is_standard_layout_v<volatile T>, ""); |
| static_assert( std::is_standard_layout_v<const volatile T>, ""); |
| #endif |
| } |
| |
| template <class T> |
| void test_is_not_standard_layout() |
| { |
| static_assert(!std::is_standard_layout<T>::value, ""); |
| static_assert(!std::is_standard_layout<const T>::value, ""); |
| static_assert(!std::is_standard_layout<volatile T>::value, ""); |
| static_assert(!std::is_standard_layout<const volatile T>::value, ""); |
| #if TEST_STD_VER > 14 |
| static_assert(!std::is_standard_layout_v<T>, ""); |
| static_assert(!std::is_standard_layout_v<const T>, ""); |
| static_assert(!std::is_standard_layout_v<volatile T>, ""); |
| static_assert(!std::is_standard_layout_v<const volatile T>, ""); |
| #endif |
| } |
| |
| template <class T1, class T2> |
| struct pair |
| { |
| T1 first; |
| T2 second; |
| }; |
| |
| int main(int, char**) |
| { |
| test_is_standard_layout<int> (); |
| test_is_standard_layout<int[3]> (); |
| test_is_standard_layout<pair<int, double> > (); |
| |
| test_is_not_standard_layout<int&> (); |
| |
| return 0; |
| } |