rb_gdbm_delete    532 ext/gdbm/gdbm.c     rb_gdbm_delete(obj, keystr);
rb_gdbm_delete    555 ext/gdbm/gdbm.c     rb_gdbm_delete(obj, keystr);
rb_gdbm_delete    592 ext/gdbm/gdbm.c         rb_gdbm_delete(obj, RARRAY_PTR(ary)[i]);