--- lib/RK/ncache.c.orig 2003-09-17 17:50:52.000000000 +0900
+++ lib/RK/ncache.c 2008-09-20 01:46:07.000000000 +0900
@@ -27,7 +27,7 @@
#include "RKintern.h"
#define NCHASH 101
-#define hash(x) ((int)((x)%NCHASH))
+#define hash(x) ((int)(((unsigned long)(x))%NCHASH))
static struct ncache Nchash[NCHASH];
static struct ncache Ncfree;