* c-decl.c (finish_decl): Pass input_location to build_unary_op.
	* c-typeck.c (array_to_pointer_conversion): Pass location to
	build_unary_op.
	(function_to_pointer_conversion): Use error_at and warning_at.
	(build_indirect_ref): Same.
	(build_array_ref): Pass location to build_binary_op.
	(parser_build_unary_op): Do not set location after calling
	build_unary_op.
	(build_unary_op): Add location argument.  Use it throughout.  Set
	EXPR_LOCATION before returning new tree.
	(build_modify_expr): Same.
	(build_binary_op): Use location throughout.  Set EXPR_LOCATION before
	returning node.
	* c-omp.c (c_finish_omp_atomic): Pass location to build_unary_op,
	build_indirect_ref, build_modify_expr.
	(c_finish_omp_for): Same.  Use error_at instead of error.
	* c-common.c (c_common_truthvalue_conversion): Pass location to
	build_unary_op.
	(warn_for_div_by_zero): Add location argument.
	* c-common.h: Add argument to build_modify_expr, build_indirect_ref,
	build_unary_op, warn_for_div_by_zero.
	* c-parser.c (c_parser_typeof_specifier): Use
	protected_set_expr_location.
	(c_parser_statement_after_labels): Same.
	(c_parser_condition): Same.
	(c_parser_expr_no_commas): Pass correct location to build_modify_expr.
	(c_parser_conditional_expression): Use protected_set_expr_location.
	(c_parser_unary_expression): Pass location to build_indirect_ref.
	(c_parser_postfix_expression_after_primary): Pass location to
	build_indirect_ref, build_unary_op.
	(c_parser_omp_for_loop): Set the increment expression's EXPR_LOCATION.
objc/
	* objc-act.c (objc_build_string_object): Pass location to
	build_unary_op.
	(init_def_list): Same.
	(init_objc_symtab): Same.
	(init_module_descriptor): Same.
	(build_module_initializer_routine): Same.
	(generate_static_references): Same.
	(build_typed_selector_reference): Same.
	(add_objc_string): Same.
	(objc_substitute_decl): Same.
	(objc_build_ivar_assignment): Same.
	(objc_build_global_assignment): Same.
	(objc_build_strong_cast_assignment): Same.
	(generate_protocols): Same.
	(build_protocol_initializer): Same.
	(build_dispatch_table_initializer): Same.
	(generate_protocol_list): Same.
	(build_category_initializer): Same.
	(build_shared_structure_initializer): Same.
	(generate_shared_structures): Same.
	(objc_build_protocol_expr): Same.
	(build_ivar_reference): Same.
	(get_super_receiver): Same.
	build_modify_expr.
testsuite/
	* gcc.dg/gomp/for-1.c: Test column.
	* gcc.dg/misc-column.c: Add column tests for unary arguments.
cp/
	* typeck.c (build_x_indirect_ref): Add location argument.
	(cp_build_binary_op): Pass location to warn_for_div_by_zero.
	(cp_build_unary_op): Add location argument.
	(cp_build_modify_expr): Same.
	* class.c (build_base_path): Pass location to build_indirect_ref.
	* semantics.c (handle_omp_for_class_iterator): Pass elocus to
	build_modify_expr.

From-SVN: r140914