A named constant cannot be a data object.  The committed
patch catches an instance that should be caught.

2018-12-08  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88048
	* resolve.c (check_data_variable): Named constant cannot be a
	data object.

2018-12-08  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88048
	* gfortran.dg/pr88048.f90: New test.

-- 
Steve