test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/setbuf.pass.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <strstream>

// class strstreambuf

// streambuf* setbuf(char* s, streamsize n);

#include <strstream>
#include <cassert>

int main()
{
    {
        char buf[] = "0123456789";
        std::strstreambuf sb(buf, 0);
        assert(sb.pubsetbuf(0, 0) == &sb);
        assert(sb.str() == std::string("0123456789"));
    }
}