--- /src/gdbmsync.c.orig	2018-08-05 14:37:18.000116786 +0200
+++ /src/gdbmsync.c		2018-08-05 14:37:39.666117321 +0200
@@ -28,7 +28,7 @@
 gdbm_sync (GDBM_FILE dbf)
 {
   /* Return immediately if the database needs recovery */	
-  GDBM_ASSERT_CONSISTENCY (dbf, );
+  GDBM_ASSERT_CONSISTENCY (dbf, GDBM_NEED_RECOVERY);
 
   /* Initialize the gdbm_errno variable. */
   gdbm_set_errno (dbf, GDBM_NO_ERROR, FALSE);}