https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70742
--- Comment #8 from Marc Glisse <glisse at gcc dot gnu.org> --- "The div, ldiv, and lldiv functions return a structure of type div_t, ldiv_t, and lldiv_t, respectively, comprising both the quotient and the remainder. The structures shall contain (in either order) the members quot (the quotient) and rem (the remainder), each of which has the same type as the arguments numer and denom." So while we know the names and types of the fields, we don't know their order (unless stdlib.h was included).
