std_sstream.h (str()): the size of the current string may be different from the initial one whenever...

2003-02-18  Paolo Carlini  <pcarlini@unitus.it>

	* include/std/std_sstream.h (str()): the size of the
	current string may be different from the initial one
	whenever _M_out_end > _M_out_beg.
	* testsuite/27_io/stringbuf_members.cc (test07): Add.

From-SVN: r63066