Section A.2.2.1, Syntax 3-1, Syntax 3-4
Struct union members

In A.2.2.1, Syntax 3-1, Syntax 3-4, REPLACE

struct_union_member ::=

{ attribute_instance } data_type { packed_dimension } list_of_variable_identifiers ;

| { attribute_instance } void list_of_variable_identifiers ;

WITH

struct_union_member ::=

{ attribute_instance } data_type_or_void list_of_variable_identifiers ;

data_type_or_void ::= data_type | void

and ADD the following footnote to struct_union_member

It shall be legal to declare void struct_union_members only within tagged unions.