31         pbackfail(typename base::int_type c = base::traits_type::eof())  in pbackfail()
50         assert(sb.snextc() == std::char_traits<char>::eof());  in main()
52         assert(sb.pbackfail('3') == std::char_traits<char>::eof());  in main()
54         assert(sb.pbackfail(std::char_traits<char>::eof()) != std::char_traits<char>::eof());  in main()
55         assert(sb.pbackfail(std::char_traits<char>::eof()) == std::char_traits<char>::eof());  in main()
64         assert(sb.snextc() == std::char_traits<char>::eof());  in main()
67         assert(sb.pbackfail(std::char_traits<char>::eof()) != std::char_traits<char>::eof());  in main()
68         assert(sb.pbackfail(std::char_traits<char>::eof()) == std::char_traits<char>::eof());  in main()
78         assert(sb.snextc() == std::char_traits<wchar_t>::eof());  in main()
80         assert(sb.pbackfail(L'3') == std::char_traits<wchar_t>::eof());  in main()
82         assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) != std::char_traits<wchar_t>::eof());  in main()
83         assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) == std::char_traits<wchar_t>::eof());  in main()
92         assert(sb.snextc() == std::char_traits<wchar_t>::eof());  in main()
95         assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) != std::char_traits<wchar_t>::eof());  in main()
96         assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) == std::char_traits<wchar_t>::eof());  in main()