extern tree okay_component_ref_for_subvars (tree, unsigned HOST_WIDE_INT *,
unsigned HOST_WIDE_INT *);
static inline bool var_can_have_subvars (tree);
extern tree okay_component_ref_for_subvars (tree, unsigned HOST_WIDE_INT *,
unsigned HOST_WIDE_INT *);
static inline bool var_can_have_subvars (tree);