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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 10 11 // <string> 12 13 // basic_string(nullptr_t) = delete; // C++2b 14 // basic_string& operator=(nullptr_t) = delete; // C++2b 15 16 #include <string> 17 #include <type_traits> 18 19 static_assert(!std::is_convertible_v<decltype(nullptr), std::string>); 20 static_assert(!std::is_constructible_v<std::string, decltype(nullptr)>); 21 static_assert(!std::is_assignable_v<std::string, decltype(nullptr)>); 22