mbrtoc8state
struct mbrtoc8state *S;
S = (struct mbrtoc8state *)(void *)ps;
__CTASSERT(offsetof(struct mbrtoc8state, mbs) <= sizeof(mbstate_t));
offsetof(struct mbrtoc8state, mbs));
__CTASSERT(alignof(struct mbrtoc8state) <= alignof(mbstate_t));