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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <ios>
// template <class charT, class traits> class basic_ios
// basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
#include <ios>
#include <streambuf>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
std::ios ios(0);
assert(ios.rdbuf() == 0);
assert(!ios.good());
std::streambuf* sb = (std::streambuf*)1;
std::streambuf* sb2 = ios.rdbuf(sb);
assert(sb2 == 0);
assert(ios.rdbuf() == sb);
assert(ios.good());
sb2 = ios.rdbuf(0);
assert(sb2 == (std::streambuf*)1);
assert(ios.rdbuf() == 0);
assert(ios.bad());
return 0;
}
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