28         std::stringstream ss;  in main()  local
29         swap(ss, ss0);  in main()
30         assert(ss.rdbuf() != 0);  in main()
31         assert(ss.good());  in main()
32         assert(ss.str() == " 123 456 ");  in main()
34         ss >> i;  in main()
36         ss >> i;  in main()
38         ss << i << ' ' << 123;  in main()
39         assert(ss.str() == "456 1236 ");  in main()
46         std::wstringstream ss;  in main()  local
47         swap(ss, ss0);  in main()
48         assert(ss.rdbuf() != 0);  in main()
49         assert(ss.good());  in main()
50         assert(ss.str() == L" 123 456 ");  in main()
52         ss >> i;  in main()
54         ss >> i;  in main()
56         ss << i << ' ' << 123;  in main()
57         assert(ss.str() == L"456 1236 ");  in main()