--- ncompress-4.2.4/compress42.c.2GB	2004-07-14 12:16:19.000000000 -0400
+++ ncompress-4.2.4/compress42.c	2004-07-14 12:16:59.000000000 -0400
@@ -1329,7 +1329,7 @@
 		REG11	int			boff;
 		REG12	int			n_bits;
 		REG13	int			ratio;
-		REG14	long		checkpoint;
+		REG14	unsigned long long	checkpoint;
 		REG15	code_int	extcode;
 		union
 		{