There is a typo (I hope!) in the WP under [lib.streambuf.get.area].


char_type* egptr() const;
Returns: The end pointer for the output sequence.
     ^^^^^^

If this isn't supposed to be 'input', then I am more lost than I
thought (not a great revelation really :-).


Pete



P.s.  Now that I've got your attention:  Since there is no longer
 an iostream class in the WP, how does one portably open
 a stream for input and output?