--- \dll\postgresql\a\backend\utils\adt\mac.c	2019-11-23 13:19:20.000000000 -0300
+++ mac.c	2019-11-24 09:49:01.737639100 -0300
@@ -57,7 +57,7 @@
 {
 	char	   *str = PG_GETARG_CSTRING(0);
 	macaddr    *result;
-	int			a,
+	unsigned int a,
 				b,
 				c,
 				d,