From bf0e97aa0e9c7658c774d4be1c8ff3cbe2698eee Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Tue, 8 Oct 2013 04:43:58 -0700
Subject: [PATCH] ITS#7718 invalidate cursor when DB gets emptied

---
 libraries/liblmdb/mdb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index ddde69d..e935dc6 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -7119,6 +7119,7 @@ mdb_rebalance(MDB_cursor *mc)
 			/* Adjust cursors pointing to mp */
 			mc->mc_snum = 0;
 			mc->mc_top = 0;
+			mc->mc_flags &= ~C_INITIALIZED;
 			{
 				MDB_cursor *m2, *m3;
 				MDB_dbi dbi = mc->mc_dbi;
@@ -7132,6 +7133,7 @@ mdb_rebalance(MDB_cursor *mc)
 					if (m3->mc_pg[0] == mp) {
 						m3->mc_snum = 0;
 						m3->mc_top = 0;
+						m3->mc_flags &= ~C_INITIALIZED;
 					}
 				}
 			}