--- esx.py-	2016-09-30 00:00:00.000000000 +0900
+++ esx.py	2016-09-30 01:00:00.000000000 +0900
@@ -324,7 +324,7 @@ def es_split(s):
 		'br_s' : [ '(', '[', '{' ],
 		'br_e' : [ ')', ']', '}' ],
 		'op' : ops_flat,
-		'type' : [ 'int', 'char', 'void', 'double' ],
+		'type' : [ 'int', 'char', 'void', 'double', 'unsigned' ],
 		'kwd' : [ 'return', 'if', 'else', 'while', 'for', 'break', 'continue', 'struct' ],
 		'spc' : [ ' ', '\t', '\n' ],
 		'etc' : [ ';' ],