mbrtoc32state
__CTASSERT(sizeof(struct mbrtoc32state) <= sizeof(mbstate_t) -
__CTASSERT(sizeof(struct mbrtoc32state) <= sizeof(mbstate_t));
__CTASSERT(alignof(struct mbrtoc32state) <= alignof(mbstate_t));
__CTASSERT(sizeof(struct mbrtoc32state) <= sizeof(mbstate_t) -