From 11308a190d31e2c9aee3c8ec8e87caf122afa58e Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Thu, 18 Aug 2011 19:30:54 -0700
Subject: [PATCH] Fix dupsort fetch

---
 libraries/libmdb/mdb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index 135c103..6baf055 100644
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -2008,7 +2008,8 @@ mdb_cursor_set(MDB_cursor *cursor, MDB_val *key, MDB_val *data,
 	cursor->mc_eof = 0;
 
 	if (data) {
-		if ((rc = mdb_read_data(cursor->mc_txn, leaf, data)) != MDB_SUCCESS)
+		MDB_val d2;
+		if ((rc = mdb_read_data(cursor->mc_txn, leaf, &d2)) != MDB_SUCCESS)
 			return rc;
 
 		if (cursor->mc_txn->mt_dbs[cursor->mc_dbi].md_flags & MDB_DUPSORT) {
@@ -2029,7 +2030,10 @@ mdb_cursor_set(MDB_cursor *cursor, MDB_val *key, MDB_val *data,
 				if (rc != MDB_SUCCESS)
 					return rc;
 			}
+		} else {
+			*data = d2;
 		}
+
 	}
 
 	rc = mdb_set_key(leaf, key);