is_standard_layout.pass.cpp revision 55d741c32e72234c022c728f24ccafb80ab8b485
1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// type_traits 11 12// is_standard_layout 13 14#include <type_traits> 15#include "test_macros.h" 16 17template <class T> 18void test_is_standard_layout() 19{ 20 static_assert( std::is_standard_layout<T>::value, ""); 21 static_assert( std::is_standard_layout<const T>::value, ""); 22 static_assert( std::is_standard_layout<volatile T>::value, ""); 23 static_assert( std::is_standard_layout<const volatile T>::value, ""); 24#if TEST_STD_VER > 14 25 static_assert( std::is_standard_layout_v<T>, ""); 26 static_assert( std::is_standard_layout_v<const T>, ""); 27 static_assert( std::is_standard_layout_v<volatile T>, ""); 28 static_assert( std::is_standard_layout_v<const volatile T>, ""); 29#endif 30} 31 32template <class T> 33void test_is_not_standard_layout() 34{ 35 static_assert(!std::is_standard_layout<T>::value, ""); 36 static_assert(!std::is_standard_layout<const T>::value, ""); 37 static_assert(!std::is_standard_layout<volatile T>::value, ""); 38 static_assert(!std::is_standard_layout<const volatile T>::value, ""); 39#if TEST_STD_VER > 14 40 static_assert(!std::is_standard_layout_v<T>, ""); 41 static_assert(!std::is_standard_layout_v<const T>, ""); 42 static_assert(!std::is_standard_layout_v<volatile T>, ""); 43 static_assert(!std::is_standard_layout_v<const volatile T>, ""); 44#endif 45} 46 47template <class T1, class T2> 48struct pair 49{ 50 T1 first; 51 T2 second; 52}; 53 54int main() 55{ 56 test_is_standard_layout<int> (); 57 test_is_standard_layout<int[3]> (); 58 test_is_standard_layout<pair<int, double> > (); 59 60 test_is_not_standard_layout<int&> (); 61} 62