--- coreutils-8.20/gnulib-tests/test-xvasprintf.c~	2012-10-23 16:17:25.000000000 +0200
+++ coreutils-8.20/gnulib-tests/test-xvasprintf.c	2012-12-17 23:51:09.622359300 +0100
@@ -95,7 +95,7 @@
   {
     /* Silence gcc warning about zero-length format string.  */
     const char *empty = "";
-    result = xasprintf (empty);
+    result = xasprintf ("%s",empty);
     ASSERT (result != NULL);
     ASSERT (strcmp (result, "") == 0);
     free (result);