--- test/bug-mmap.c.orig	Sat May 30 10:30:00 2015
+++ test/bug-mmap.c	Wed Nov 18 16:39:20 2015
@@ -13,8 +13,6 @@
 
 #include "config.h"
 
-#define _BSD_SOURCE 1 /* for MAP_POPULATE */
-
 #if HAVE_SYS_MMAN_H
 #   include <sys/mman.h>
 #endif
