2017-09-29  Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR fortran/25071
	* gfortran.dg/argument_checking_3.f90: Change warnings to errors.
	* gfortran.dg/argument_checking_4.f90: Likewise.
	* gfortran.dg/argument_checking_5.f90: Likewise.
	* gfortran.dg/argument_checking_6.f90: Likewise.
	* gfortran.dg/argument_checking_10.f90: Likewise.
	* gfortran.dg/argument_checking_13.f90: Likewise.
	* gfortran.dg/argument_checking_15.f90: Likewise.
	* gfortran.dg/argument_checking_18.f90: Likewise.
	* gfortran.dg/gomp/udr8.f90: Likewise.
	* gfortran.dg/warn_argument_mismatch_1.f90: Add -std=legacy to
	the dg-options.

From-SVN: r253287