fstream.tcc (basic_filebuf::seekoff): Use codecvt::length to handle variable-width stateless encodings correctly.


2003-09-10  Petur Runolfsson  <peturr02@ru.is>

	* include/bits/fstream.tcc (basic_filebuf::seekoff):
	Use codecvt::length to handle variable-width stateless encodings
	correctly.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/1.cc: New test.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/2.cc: New test.

From-SVN: r71271