re PR fortran/85839 ([F2018] warn for obsolescent features)

re PR fortran/85839 ([F2018] warn for obsolescent features)

2018-05-25  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/85839
	* match.c (gfc_match_block_data): Call gfc_notify_std to warn about
	an obsolescent feature in Fortran 2018.
	(gfc_match_equivalence): Ditto.
	* resolve.c (resolve_common_blocks): Ditto.
	(gfc_resolve_forall): Ditto.
	* symbol.c (gfc_define_st_label): Ditto.

2018-05-25  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/85839
	* gfortran.dg/f2018_obs.f90: New test case.

From-SVN: r260705