    plp               318 libglibc/obstack.c   register struct _obstack_chunk *plp;	/* point to previous chunk if any */
    plp               326 libglibc/obstack.c       plp = lp->prev;
    plp               327 libglibc/obstack.c       lp = plp;
    plp               341 libglibc/obstack.c   register struct _obstack_chunk *plp;	/* point to previous chunk if any */
    plp               349 libglibc/obstack.c       plp = lp->prev;
    plp               351 libglibc/obstack.c       lp = plp;