Description: Ensure strdup() is declared
Author: Stephen Kitt <skitt@debian.org>
Bug-Debian: https://bugs.debian.org/1066585

--- a/src/ftp-ls.c
+++ b/src/ftp-ls.c
@@ -29,7 +29,7 @@
 so, delete this exception statement from your version.  */
 
 #include "config.h"
-#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE 500
 #include <time.h>
 #include <stdio.h>
 #include <stdlib.h>