23         std::istringstream ss(" 123 456");  in main()  local
24         assert(ss.rdbuf() != 0);  in main()
25         assert(ss.good());  in main()
26         assert(ss.str() == " 123 456");  in main()
28         ss >> i;  in main()
30         ss >> i;  in main()
32         ss.str(" 789");  in main()
33         ss.clear();  in main()
34         assert(ss.good());  in main()
35         assert(ss.str() == " 789");  in main()
36         ss >> i;  in main()
40         std::wistringstream ss(L" 123 456");  in main()  local
41         assert(ss.rdbuf() != 0);  in main()
42         assert(ss.good());  in main()
43         assert(ss.str() == L" 123 456");  in main()
45         ss >> i;  in main()
47         ss >> i;  in main()
49         ss.str(L" 789");  in main()
50         ss.clear();  in main()
51         assert(ss.good());  in main()
52         assert(ss.str() == L" 789");  in main()
53         ss >> i;  in main()