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 // <ios> 10 11 // template <class charT, class traits> class basic_ios 12 13 // bool operator!() const; 14 15 #include <ios> 16 #include <cassert> 17 18 #include "test_macros.h" 19 main(int,char **)20int main(int, char**) 21 { 22 std::ios ios(0); 23 assert(!ios == ios.fail()); 24 ios.setstate(std::ios::failbit); 25 assert(!ios == ios.fail()); 26 27 return 0; 28 } 29