$OpenBSD: patch-index_memlook_c,v 1.1 2016/03/18 16:41:53 naddy Exp $
--- index/memlook.c.orig	Thu Nov 21 03:28:47 1996
+++ index/memlook.c	Thu Mar 17 23:09:19 2016
@@ -7,6 +7,7 @@
    the function returns the position where the pattern first matches.
 ------------------------------------------------------------------------*/
 #include <stdio.h>
+#include <string.h>
 
 int memlook(pattern, text, length)
 unsigned char *pattern;
