gelf_update_sym
if (gelf_update_sym(symdata, ndx, symptr) == 0)
(void) gelf_update_sym(elf_data, c,
int gelf_update_sym(Elf_Data *, int, GElf_Sym *);
if (gelf_update_sym(ddata, i, &sym) ==
(void) gelf_update_sym(data_sym, isym, &dsym);
(void) gelf_update_sym(data_sym, ndx, &rsym);