declaration of sprintf only if __STDC__ is not defined

mach/proto/ncg/gencode.c

@@ -19,7 +19,11 @@ static char rcsid[] = "$Header$";
  * Author: Hans van Staveren
  */
 
-extern char	*sprintf();
+#ifndef __STDC__
+extern char *sprintf();
+#else
+/* sprintf should be declared in stdio.h, as returning an int */
+#endif
 
 string mystrcpy();