There was a concern from Kostja, that my commit exposes only functions, but Mons wants other symbols too, such as 'cord_ptr'. Just tried: tarantool> ffi.cdef[[ > struct cord; > extern struct cord *cord_ptr; > ]] --- ... tarantool> ffi.C.cord_ptr --- - 'cdata<struct cord *>: 0x7fff6c0cf6f9' ...