Merge remote-tracking branch 'origin/master'

c_src/bdberl_drv.c

@@ -1169,6 +1169,8 @@ static int open_database(const char* name, DBTYPE type, unsigned int flags, Port
             }
         }
 
+        flags |= DB_AUTO_COMMIT;
+
         // Attempt to open our database
         DBGCMD(data, "db->open(%p, 0, '%s', 0, %x, %08x, 0);", db, name, type, flags);
         rc = db->open(db, 0, name, 0, type, flags, 0);

src/bdberl.erl

@@ -1374,7 +1374,12 @@ cursor_get(Key) ->
     not_found | {ok, db_key(), db_value()} | db_error().
 
 cursor_get(Key, Opts) ->
-    {KeyLen, KeyBin} = to_binary(Key),
+    case Key of
+        undefined ->
+            {KeyLen, KeyBin} = {0, <<>>};
+        _ ->
+            {KeyLen, KeyBin} = to_binary(Key)
+    end,
     Flags = process_flags(Opts),
     Cmd = <<Flags:32/native, KeyLen:32/native, KeyBin/bytes>>,
     <<Result:32/signed-native>> = erlang:port_control(get_port(), ?CMD_CURSOR_GET, Cmd),