677        /* Adjust the root's memory footprint and mark it dirty. */
678        __wt_cache_page_inmem_incr(session, root, root_incr);
679        __wt_cache_page_inmem_decr(session, root, root_decr);
680        __wt_page_modify_set(session, root);
681
   	intervals: When switching on complete, the value of complete must be in one of the following intervals: {[0,0], [2,2]}.
682err:    switch (complete) {
683        case WT_ERR_RETURN:
684                __wt_free_ref_index(session, root, alloc_index, true);
685                break;
   	dead_error_condition: The switch value complete cannot be WT_ERR_PANIC.
	CID 1371132 (#1 of 1): Logically dead code (DEADCODE)
	dead_error_begin: Execution cannot reach this statement: case WT_ERR_PANIC:.
686        case WT_ERR_PANIC:
687                __wt_err(session, ret,
688                    "fatal error during root page split to deepen the tree");
689                ret = WT_PANIC;
690                break;
691        case WT_ERR_IGNORE:
692                if (ret != 0 && ret != WT_PANIC) {
693                        __wt_err(session, ret,
694                            "ignoring not-fatal error during root page split "
695                            "to deepen the tree");
696                        ret = 0;
697                }
698                break;
699        }
700        return (ret);