1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <strstream>
11
12// class ostrstream
13
14// strstreambuf* rdbuf() const;
15
16#include <strstream>
17#include <cassert>
18
19int main()
20{
21    {
22        char buf[] = "123 4.5 dog";
23        const std::ostrstream out(buf, 0);
24        std::strstreambuf* sb = out.rdbuf();
25        assert(sb->sputc('a') == 'a');
26        assert(buf == std::string("a23 4.5 dog"));
27    }
28}
29