Fix dupsort fetch

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index 135c103..6baf055 100644 (file)
--- 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);