From d3990eb2f8b2944782604a2ca7bd52e08c58fc3e Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Wed, 25 Jul 2012 12:31:08 -0700
Subject: [PATCH] Append mode should also detect keys that are too small

---
 libraries/libmdb/mdb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index 87d5fee..9ce45b3 100644
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -4261,9 +4261,11 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
 			rc = mdb_cursor_last(mc, &k2, &d2);
 			if (rc == 0) {
 				rc = mc->mc_dbx->md_cmp(key, &k2);
-				if (rc) {
+				if (rc > 0) {
 					rc = MDB_NOTFOUND;
 					mc->mc_ki[mc->mc_top]++;
+				} else {
+					rc = 0;
 				}
 			}
 		} else {