SNAPCOUNT_DONE    455 lj_trace.c         traceref(J, J->parent)->snap[J->exitno].count = SNAPCOUNT_DONE;
SNAPCOUNT_DONE    618 lj_trace.c           if (!J->loopref) J->cur.snap[J->cur.nsnap-1].count = SNAPCOUNT_DONE;
SNAPCOUNT_DONE    683 lj_trace.c           snap->count != SNAPCOUNT_DONE &&