Fix update of big data items

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index ad4e903..8937a8e 100644 (file)
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -3469,7 +3469,8 @@ mdb_put0(MDB_txn *txn, MDB_dbi dbi,
                                goto put_sub;
                        }
                        /* same size, just replace it */
-                       if (NODEDSZ(leaf) == data->mv_size) {
+                       if (!F_ISSET(leaf->mn_flags, F_BIGDATA) &&
+                               NODEDSZ(leaf) == data->mv_size) {
                                memcpy(NODEDATA(leaf), data->mv_data, data->mv_size);
                                goto done;
                        }