* cp-tree.h (DECL_ANON_UNION_ELEMS): New macro.
	* decl2.c (finish_anon_union): Set DECL_ANON_UNION_ELEMS.
	Don't call expand_anon_union_decl here
	* semantics.c (exapnd_stmt): Call it here, instead.
	* typeck.c (mark_addressable): Addressed variables are implicitly
	used.

From-SVN: r29645