2195   struct malloc_chunk* bk;  member
2413   struct malloc_tree_chunk* bk;  member
3290       assert(p->fd->bk == p);  in do_check_free_chunk()
3291       assert(p->bk->fd == p);  in do_check_free_chunk()
3331     assert(u->fd->bk == u);  in do_check_tree()
3332     assert(u->bk->fd == u);  in do_check_tree()
3377   mchunkptr p = b->bk;  in do_check_smallbin()
3382     for (; p != b; p = p->bk) {  in do_check_smallbin()
3389       assert(p->bk == b || chunksize(p->bk) == chunksize(p));  in do_check_smallbin()
3595   F->bk = P;\
3597   P->bk = B;\
3603   mchunkptr B = P->bk;\
3608   if (RTCHECK(F == smallbin_at(M,I) || (ok_address(M, F) && F->bk == P))) { \
3614       F->bk = B;\
3635   else if (RTCHECK(ok_address(M, F) && F->bk == P)) {\
3636     F->bk = B;\
3671     X->fd = X->bk = X;\
3685           X->fd = X->bk = X;\
3696           T->fd = F->bk = X;\
3698           X->bk = T;\
3731   if (X->bk != X) {\
3733     R = X->bk;\
3734     if (RTCHECK(ok_address(M, F) && F->bk == X && R->fd == X)) {\
3735       F->bk = R;\
3928     bin->fd = bin->bk = bin;  in init_bins()