bool is_open() const;

Defined in header

State state() const; (1)

protected: virtual pos_type seekoff( off_type off,

std::basic_string<CharT,Traits,Allocator> str() const; (1)

Defined in header

protected: virtual std::basic_streambuf<CharT, Traits>*

Defined in header

protected: void swap( basic_iostream& other );

protected: virtual int_type underflow()