tref_isgcv       1237 lj_record.c        int keybarrier = tref_isgcv(ix->key) && !tref_isnil(ix->val);
tref_isgcv       1283 lj_record.c        if (keybarrier || tref_isgcv(ix->val))
tref_isgcv       1385 lj_record.c        if (needbarrier && tref_isgcv(val))