2003-06-26  Paolo Carlini  <pcarlini@unitus.it>
            Nathan C. Myers  <ncm-nospam@cantrip.org>

	* include/bits/fstream.tcc (_M_underflow): When the actual
	end of file is reached, set 'uncommitted' mode to allow a
	next write without an intervening seek (see C++98 27.8.1.1,2
	and C89 7.9.5.3).
	* testsuite/27_io/basic_filebuf/underflow/char/2.cc: New.

Co-Authored-By: Nathan C. Myers <ncm-nospam@cantrip.org>

From-SVN: r68522