26         std::ios ios(0);  in main()  local
27         ios.setstate(std::ios::goodbit);  in main()
28         assert(ios.rdstate() == std::ios::badbit);  in main()
32             ios.exceptions(std::ios::badbit);  in main()
40             ios.setstate(std::ios::goodbit);  in main()
43         catch (std::ios::failure&)  in main()
45             assert(ios.rdstate() == std::ios::badbit);  in main()
49             ios.setstate(std::ios::eofbit);  in main()
52         catch (std::ios::failure&)  in main()
54             assert(ios.rdstate() == (std::ios::eofbit | std::ios::badbit));  in main()
60         std::ios ios(&sb);  in main()  local
61         ios.setstate(std::ios::goodbit);  in main()
62         assert(ios.rdstate() == std::ios::goodbit);  in main()
63         ios.setstate(std::ios::eofbit);  in main()
64         assert(ios.rdstate() == std::ios::eofbit);  in main()
65         ios.setstate(std::ios::failbit);  in main()
66         assert(ios.rdstate() == (std::ios::eofbit | std::ios::failbit));  in main()