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_trivially_default_constructible 13 14#include <type_traits> 15 16template <class T> 17void test_is_trivially_default_constructible() 18{ 19 static_assert( std::is_trivially_default_constructible<T>::value, ""); 20 static_assert( std::is_trivially_default_constructible<const T>::value, ""); 21 static_assert( std::is_trivially_default_constructible<volatile T>::value, ""); 22 static_assert( std::is_trivially_default_constructible<const volatile T>::value, ""); 23} 24 25template <class T> 26void test_has_not_trivial_default_constructor() 27{ 28 static_assert(!std::is_trivially_default_constructible<T>::value, ""); 29 static_assert(!std::is_trivially_default_constructible<const T>::value, ""); 30 static_assert(!std::is_trivially_default_constructible<volatile T>::value, ""); 31 static_assert(!std::is_trivially_default_constructible<const volatile T>::value, ""); 32} 33 34class Empty 35{ 36}; 37 38class NotEmpty 39{ 40 virtual ~NotEmpty(); 41}; 42 43union Union {}; 44 45struct bit_zero 46{ 47 int : 0; 48}; 49 50class Abstract 51{ 52 virtual ~Abstract() = 0; 53}; 54 55struct A 56{ 57 A(); 58}; 59 60int main() 61{ 62 test_has_not_trivial_default_constructor<void>(); 63 test_has_not_trivial_default_constructor<int&>(); 64 test_has_not_trivial_default_constructor<A>(); 65 test_has_not_trivial_default_constructor<Abstract>(); 66 test_has_not_trivial_default_constructor<NotEmpty>(); 67 68 test_is_trivially_default_constructible<Union>(); 69 test_is_trivially_default_constructible<Empty>(); 70 test_is_trivially_default_constructible<int>(); 71 test_is_trivially_default_constructible<double>(); 72 test_is_trivially_default_constructible<int*>(); 73 test_is_trivially_default_constructible<const int*>(); 74 test_is_trivially_default_constructible<char[3]>(); 75 test_is_trivially_default_constructible<bit_zero>(); 76} 77