http://git.gnu.org.ua/cgit/gdbm.git/commit/?id=1059526e357da1aa92e5c020332f4b39ceb37503

diff --git a/src/gdbmsync.c b/src/gdbmsync.c
index a8d1002..a75952b 100644
--- a/src/gdbmsync.c
+++ b/src/gdbmsync.c
@@ -28,7 +28,7 @@ int
 gdbm_sync (GDBM_FILE dbf)
 {
   /* Return immediately if the database needs recovery */	
-  GDBM_ASSERT_CONSISTENCY (dbf, );
+  GDBM_ASSERT_CONSISTENCY (dbf, -1);
 
   /* Initialize the gdbm_errno variable. */
   gdbm_set_errno (dbf, GDBM_NO_ERROR, FALSE);