--- ctype_orig.h	2009-11-07 15:25:20.000000000 +0000
+++ ctype.h	2011-11-14 10:58:39.108899500 +0000
@@ -54,7 +54,7 @@ extern	__IMPORT char	*__ctype_ptr__;
    Meanwhile, the real index to __ctype_ptr__+1 must be cast to int,
    since isalpha(0x100000001LL) must equal isalpha(1), rather than being
    an out-of-bounds reference on a 64-bit machine.  */
-#define __ctype_lookup(__c) ((__ctype_ptr__+sizeof(""[__c]))[(int)(__c)])
+#define __ctype_lookup(__c) ((__ctype_ptr__+sizeof(""[(int)(__c)]))[(int)(__c)])
 
 #define	isalpha(__c)	(__ctype_lookup(__c)&(_U|_L))
 #define	isupper(__c)	((__ctype_lookup(__c)&(_U|_L))==_U)