2002-04-08  Benjamin Kosnik  <bkoz@redhat.com>

	libstdc++/5180
	* include/bits/fstream.tcc (filebuf::seekpos): Fix.
	* include/std/std_fstream.h: Clean.
	* include/bits/ostream.tcc: Remove extraneous variables.
	* include/bits/sstream.tcc (stringbuf::seekoff): Be strict about
	open modes and which modes.
	(stringbuf::seekpos): Same.
	* testsuite/27_io/stringbuf_virtuals.cc: New tests.

From-SVN: r52057