--- src/canna.c.orig	2014-06-06 21:28:39.576576921 +0900
+++ src/canna.c	2014-06-06 21:29:46.141572668 +0900
@@ -191,7 +191,7 @@
 #if __STDC__
 static Lisp_Object mule_make_string(unsigned char *, int);
 static mule_strlen(unsigned char *, int);
-static count_char(unsigned char *,int, int, int, int *, int *, int *);
+static void count_char(unsigned char *,int, int, int, int *, int *, int *);
 #else /* __STDC__ */
 static Lisp_Object mule_make_string();
 static mule_strlen();
@@ -1573,6 +1573,9 @@
 
 /* count number of characters */
 static
+#if __STDC__
+void
+#endif
 count_char(p,len,pos,rev,clen,cpos,crev)
 unsigned char *p;	
 int len,pos,rev,*clen,*cpos,*crev;