--- test_CVE-2016-5195.c.orig	2016-10-30 06:16:53 +0100
+++ test_CVE-2016-5195.c	2016-10-30 06:16:53 +0100
@@ -29,10 +29,14 @@
 #include <errno.h>
 #include <string.h>
 
-#ifndef PT_SET_PTRACER
+#ifndef PR_SET_PTRACER
 #define PR_SET_PTRACER 0x59616d61
 #endif
 
+#ifndef PR_SET_PTRACER_ANY
+#define PR_SET_PTRACER_ANY ((unsigned long)-1)
+#endif
+
 static long volatile *write_iters;
 static volatile unsigned long ready;
 static void *p_priv;
@@ -180,6 +184,8 @@
 	fd = -1;
 #ifdef O_TMPFILE
 	fd = open(".", O_TMPFILE | O_RDWR, 0700);
+#else
+	errno = EISDIR;
 #endif
 	if (fd != -1) {
 		printf("+ Using O_TMPFILE\n");
@@ -224,4 +230,6 @@
 		try_procmem();
 	try_ptrace();
 	printf("No force-write means detected\n");
+
+	return 0;
 }