--- gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c.m_pi	2018-05-08 08:43:30.000000000 +0200

+++ gnome-disk-utility-3.28.2/src/disks/gdubenchmarkdialog.c	2018-05-24 00:49:32.870767764 +0200

@@ -18,6 +18,10 @@

 #include <sys/ioctl.h>

 #include <linux/fs.h>

+#ifndef __USE_XOPEN

+#define __USE_XOPEN

+#endif

+

 #include <math.h>

 #include "gduapplication.h"