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From c9e602ebdb0fb8b8ee526d272e8a6fdf23a26a4b Mon Sep 17 00:00:00 2001
From: Ludwig Krispenz <lkrispen@redhat.com>
Date: Thu, 24 Oct 2019 14:26:20 +0200
Subject: [PATCH] Ticket 49850 cont -fix crash in ldbm_non_leaf

        Bug: if the ldif to be imported contains only one entry there are no leaf nodes
                and the call to qsort crashes

        Fix: check that nodes is not NULL
---
 ldap/servers/slapd/back-ldbm/ancestorid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ldap/servers/slapd/back-ldbm/ancestorid.c b/ldap/servers/slapd/back-ldbm/ancestorid.c
index 254a3aa3b..f26ac1364 100644
--- a/ldap/servers/slapd/back-ldbm/ancestorid.c
+++ b/ldap/servers/slapd/back-ldbm/ancestorid.c
@@ -114,7 +114,7 @@ ldbm_get_nonleaf_ids(backend *be, DB_TXN *txn, IDList **idl, ImportJob *job)
     if (ret != 0)
         ldbm_nasty("ldbm_get_nonleaf_ids", sourcefile, 13030, ret);
 
-    if (ret == 0) {
+    if (ret == 0 && nodes) {
         /* now sort it */
         import_log_notice(job, SLAPI_LOG_INFO, "ldbm_get_nonleaf_ids",
             "Starting sort of ancestorid non-leaf IDs...");
-- 
2.21.0