diff --git a/yacl/link/link.h b/yacl/link/link.h
index f47d9dd5..4f9f1b3a 100644
--- a/yacl/link/link.h
+++ b/yacl/link/link.h
@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// test
+
 #pragma once
 
 #include "yacl/link/algorithm/allgather.h"