die_get_data_member_location
if (die_get_data_member_location(die_mem, &loc) < 0) {
if (die_get_data_member_location(member, &loc) == 0)
int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
ret = die_get_data_member_location(die_mem, &offs);