$NetBSD: patch-ag,v 1.4 2013/08/16 08:30:20 hannken Exp $

The ctype functions work on integers.

--- getdate.c.orig	2013-08-08 13:58:07.000000000 +0000
+++ getdate.c
@@ -2547,7 +2547,7 @@ LookupWord (buff)
   /* Make it lowercase. */
   for (p = buff; *p; p++)
     if (ISUPPER ((unsigned char) *p))
-      *p = tolower (*p);
+      *p = tolower ((unsigned char)(*p));
 
   if (strcmp (buff, "am") == 0 || strcmp (buff, "a.m.") == 0)
     {