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 // <sstream>
11 
12 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
13 // class basic_ostringstream
14 
15 // void swap(basic_ostringstream& rhs);
16 
17 #include <sstream>
18 #include <cassert>
19 
main()20 int main()
21 {
22     {
23         std::ostringstream ss0(" 123 456");
24         std::ostringstream ss;
25         ss.swap(ss0);
26         assert(ss.rdbuf() != 0);
27         assert(ss.good());
28         assert(ss.str() == " 123 456");
29         int i = 234;
30         ss << i << ' ' << 567;;
31         assert(ss.str() == "234 5676");
32         ss0 << i << ' ' << 567;;
33         assert(ss0.str() == "234 567");
34     }
35     {
36         std::wostringstream ss0(L" 123 456");
37         std::wostringstream ss;
38         ss.swap(ss0);
39         assert(ss.rdbuf() != 0);
40         assert(ss.good());
41         assert(ss.str() == L" 123 456");
42         int i = 234;
43         ss << i << ' ' << 567;;
44         assert(ss.str() == L"234 5676");
45         ss0 << i << ' ' << 567;;
46         assert(ss0.str() == L"234 567");
47     }
48 }
49