2017-04-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/80484
	* io.c (format_lex): Check for '/' and set token to FMT_SLASH.
	(check_format): Move FMT_DT checking code to data_desc section.
	* module.c (gfc_match_use): Include the case of INTERFACE_DTIO.

	PR fortran/80484
	* gfortran.dg/dtio_29.f03: New test.

From-SVN: r247084