update

stdarg.h

@@ -4,8 +4,12 @@
 typedef char *va_list;
 
 /* only correct for i386 */
-#define va_start(ap,last) ap=(char *)&(last); 
-#define va_arg(ap,type) (ap-=sizeof (type), *(type *)(ap))
+/* XXX: incorrect for type size different than 4 bytes*/
+#define va_start(ap,last) ap = ((char *)&(last)) + sizeof(int); 
+#define va_arg(ap,type) (ap += sizeof(int), *(type *)(ap - sizeof(int)))
 #define va_end(ap)
 
+/* fix a buggy dependency on GCC in libio.h */
+typedef va_list __gnuc_va_list;
+
 #endif