2019-09-01  Paul Thomas  <pault@gcc.gnu.org>

	* array.c (spec_dimen_size): Check for the presence of
	expressions for the bounds.
	* decl.c (gfc_match_end): Add case COMP_SELECT_RANK.
	* dump-parse-tree.c(show_symbol): Show the arrayspec of class
	entities.
	(show_code_node): Show the code for SELECT_RANK.
	* expr.c (gfc_check_vardef_context): Omit the context of
	variable definition for select rank associate names since the
	ASSUMED RANK throws.
	* gfortran.h : Add ST_SELECT_RANK and ST_RANK to enum
	gfc_statement. Add select_rank_temporary to symbol attribute
	structure. Add EXEC_SELECT_RANK to enum gfc_exec_op.
	* match.c (match_exit_cycle): Add COMP_SELECT_RANK.
	(copy_ts_from_selector_to_associate): Add as special case for
	assumed rank class variables.
	(select_intrinsic_set_tmp): Clean up the code by using symbols
	for references to the temporary and the selector.
	(select_type_set_tmp): Ditto.
	(select_rank_set_tmp): New function.
	(gfc_match_select_rank): New function.
	(gfc_match_rank_is): New function.
	* match.h : Add prototypes for gfc_match_select_rank and
	gfc_match_rank_is.
	* parse.c (decode_statement): Attempt to match select_rank and
	rank statements.
	(next_statement, gfc_ascii_statement): Add ST_SELECT_RANK.
	(parse_select_rank_block): New function.
	(parse_executable): Parse select rank block for ST_SELECT_RANK.
	* parse.h : Add COMP_SELECT_RANK to enum gfc_compile_state.
	* resolve.c (resolve_variable): Exclude select_rank_temporaries
	from the check on use of ASSUMED RANK.
	(gfc_resolve_expr): Make sure that unlimited polymorphic select
	rank temporaries expressions are not resolved again after being
	successfully resolved.
	(resolve_assoc_var): Do not do the rank check for select rank
	temporaries.
	(resolve_select_rank): New function.
	(gfc_resolve_blocks): Deal with case EXEC_SELECT_RANK.
	(resolve_symbol): Exclude select rank temporaries for check on
	use of ASSUMED RANK.
	* st.c (gfc_free_statement): Include EXEC_SELECT_RANK.
	* trans-array.c (gfc_conv_array_ref): Select rank temporaries
	may have dimen == 0.
	(gfc_conv_expr_descriptor): Zero the offset of select rank
	temporaries.
	* trans-stmt.c (copy_descriptor): New function.
	(trans_associate_var): Add code to associate select rank temps.
	(gfc_trans_select_rank_cases): New function.
	(gfc_trans_select_rank): New function.
	* trans-stmt.h : Add prototype for gfc_trans_select_rank.
	trans.c (trans_code): Add select rank case.


2019-09-01  Paul Thomas  <pault@gcc.gnu.org>

	* gfortran.dg/select_rank_1.f90 : New test.
	* gfortran.dg/select_rank_2.f90 : New test.

From-SVN: r275269