50 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// type_traits10 11// lvalue_ref12 13#include <type_traits>14 15#include "test_macros.h"16 17template <class T>18void test_lvalue_ref()19{20 static_assert(!std::is_void<T>::value, "");21#if TEST_STD_VER > 1122 static_assert(!std::is_null_pointer<T>::value, "");23#endif24 static_assert(!std::is_integral<T>::value, "");25 static_assert(!std::is_floating_point<T>::value, "");26 static_assert(!std::is_array<T>::value, "");27 static_assert(!std::is_pointer<T>::value, "");28 static_assert( std::is_lvalue_reference<T>::value, "");29 static_assert(!std::is_rvalue_reference<T>::value, "");30 static_assert(!std::is_member_object_pointer<T>::value, "");31 static_assert(!std::is_member_function_pointer<T>::value, "");32 static_assert(!std::is_enum<T>::value, "");33 static_assert(!std::is_union<T>::value, "");34 static_assert(!std::is_class<T>::value, "");35 static_assert(!std::is_function<T>::value, "");36}37 38struct incomplete_type;39 40int main(int, char**)41{42 test_lvalue_ref<int&>();43 test_lvalue_ref<const int&>();44 45// LWG#258246 static_assert(!std::is_lvalue_reference<incomplete_type>::value, "");47 48 return 0;49}50