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 // lvalue_ref 13 14 #include <type_traits> 15 16 #include "test_macros.h" 17 18 template <class T> 19 void test_lvalue_ref() 20 { 21 static_assert(!std::is_void<T>::value, ""); 22 #if TEST_STD_VER > 11 23 static_assert(!std::is_null_pointer<T>::value, ""); 24 #endif 25 static_assert(!std::is_integral<T>::value, ""); 26 static_assert(!std::is_floating_point<T>::value, ""); 27 static_assert(!std::is_array<T>::value, ""); 28 static_assert(!std::is_pointer<T>::value, ""); 29 static_assert( std::is_lvalue_reference<T>::value, ""); 30 static_assert(!std::is_rvalue_reference<T>::value, ""); 31 static_assert(!std::is_member_object_pointer<T>::value, ""); 32 static_assert(!std::is_member_function_pointer<T>::value, ""); 33 static_assert(!std::is_enum<T>::value, ""); 34 static_assert(!std::is_union<T>::value, ""); 35 static_assert(!std::is_class<T>::value, ""); 36 static_assert(!std::is_function<T>::value, ""); 37 } 38 39 struct incomplete_type; 40 41 int main() 42 { 43 test_lvalue_ref<int&>(); 44 test_lvalue_ref<const int&>(); 45 46 // LWG#2582 47 static_assert(!std::is_lvalue_reference<incomplete_type>::value, ""); 48 } 49