size_t is the right type to use, but Tcl's core is not prepared for it.

	-mi

--- pgtclCmds.c	Mon Jan 15 21:41:07 2007
+++ pgtclCmds.c	Mon Jun 18 16:28:31 2007
@@ -3644,5 +3644,5 @@
 {
 	unsigned char	   *from_binary;
-	size_t         		from_len;
+	int         		from_len;
 	unsigned char	   *to_string;
 	size_t 				to_len;