Index: main.c
--- main.c.orig	2013-06-20 08:37:44.000000000 +0200
+++ main.c	2018-04-15 11:56:11.231551000 +0200
@@ -37,6 +37,7 @@
  */
 
 #include "snow.h"
+#include <string.h>
 
 
 /*