re PR fortran/79382 (DTIO ICE)

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* decl.c (access_attr_decl): Test for presence of generic DTIO
	interface and emit error if not present.

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* io/transfer.c (check_dtio_proc): New function.
	(formatted_transfer_scalar_read): Use it.
	(formatted_transfer_scalar_write): ditto.

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* gfortran.dg/dtio_10.f90 : Change test of error message.
	* gfortran.dg/dtio_23.f90 : New test.
	* gfortran.dg/dtio_24.f90 : New test.

From-SVN: r245596