From 4fcbaa44f3c94b906b47504855a06cfa14dc4170 Mon Sep 17 00:00:00 2001
From: Hallvard Furuseth <hallvard@openldap.org>
Date: Tue, 8 Dec 2015 16:43:55 +0100
Subject: [PATCH] mdbx: backport - ITS#8334 Fix MDB_APPENDDUP vs.
 rewrite(single item).

Change-Id: I7742bd2e75ef670dac31a46d270a96ee28c20639
---
 mdb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mdb.c b/mdb.c
index 69d4c5d1..1503d41a 100644
--- a/mdb.c
+++ b/mdb.c
@@ -6640,7 +6640,7 @@ more:
 
 				/* does data match? */
 				if (!mc->mc_dbx->md_dcmp(data, &olddata)) {
-					if (unlikely(flags & MDB_NODUPDATA))
+					if (unlikely(flags & (MDB_NODUPDATA|MDB_APPENDDUP)))
 						return MDB_KEYEXIST;
 					/* overwrite it */
 					goto current;