31         pbackfail(typename base::int_type c = base::traits_type::eof())  in pbackfail()  function
32         {return base::pbackfail(c);}  in pbackfail()
42         tb.pbackfail();  in main()
51         assert(sb.pbackfail('3') == '3');  in main()
52         assert(sb.pbackfail('3') == std::char_traits<char>::eof());  in main()
53         assert(sb.pbackfail('2') == '2');  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()
65         assert(sb.pbackfail('3') == '3');  in main()
66         assert(sb.pbackfail('3') == '3');  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()
79         assert(sb.pbackfail(L'3') == L'3');  in main()
80         assert(sb.pbackfail(L'3') == std::char_traits<wchar_t>::eof());  in main()
81         assert(sb.pbackfail(L'2') == L'2');  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()
93         assert(sb.pbackfail(L'3') == L'3');  in main()
94         assert(sb.pbackfail(L'3') == L'3');  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()