gcc/c-family/
	* c-common.c (c_common_attribute_table): vector_size affects type
	identity.
gcc/cp/
	* decl2.c (any_dependent_type_attributes_p): New.
	* pt.c (dependent_type_p_r, type_dependent_expression_p): Check it.
	* semantics.c (finish_id_expression): Check it.
	* typeck.c (finish_class_member_access_expr): Check it.

From-SVN: r239309