724   upb_fielddef *newf = upb_fielddef_new(owner);  in upb_fielddef_dup()  local
725   if (!newf) return NULL;  in upb_fielddef_dup()
726   upb_fielddef_settype(newf, upb_fielddef_type(f));  in upb_fielddef_dup()
727   upb_fielddef_setlabel(newf, upb_fielddef_label(f));  in upb_fielddef_dup()
728   upb_fielddef_setnumber(newf, upb_fielddef_number(f), NULL);  in upb_fielddef_dup()
729   upb_fielddef_setname(newf, upb_fielddef_name(f), NULL);  in upb_fielddef_dup()
732     upb_fielddef_setdefaultstr(newf, s->str, s->len, NULL);  in upb_fielddef_dup()
734     newf->default_is_string = f->default_is_string;  in upb_fielddef_dup()
735     newf->defaultval = f->defaultval;  in upb_fielddef_dup()
746       upb_fielddef_unref(newf, owner);  in upb_fielddef_dup()
751     upb_fielddef_setsubdefname(newf, newname, NULL);  in upb_fielddef_dup()
755   return newf;  in upb_fielddef_dup()