38 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// <ios>10 11// template <class charT, class traits> class basic_ios12 13// basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);14 15#include <ios>16#include <streambuf>17#include <cassert>18 19#include "test_macros.h"20 21int main(int, char**)22{23 std::ios ios(0);24 assert(ios.rdbuf() == 0);25 assert(!ios.good());26 std::streambuf* sb = (std::streambuf*)1;27 std::streambuf* sb2 = ios.rdbuf(sb);28 assert(sb2 == 0);29 assert(ios.rdbuf() == sb);30 assert(ios.good());31 sb2 = ios.rdbuf(0);32 assert(sb2 == (std::streambuf*)1);33 assert(ios.rdbuf() == 0);34 assert(ios.bad());35 36 return 0;37}38