libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/freeze.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <strstream>

// class ostrstream

// void freeze(bool freezefl = true);

#include <strstream>
#include <cassert>

int main()
{
    {
        std::ostrstream out;
        out.freeze();
        assert(!out.fail());
        out << 'a';
        assert(out.fail());
        out.clear();
        out.freeze(false);
        out << 'a';
        out << char(0);
        assert(out.str() == std::string("a"));
        out.freeze(false);
    }
}