Index: ext/ripper/eventids2.c
===================================================================
--- ext/ripper/eventids2.c	(revision 34755)
+++ ext/ripper/eventids2.c	(working copy)
@@ -274,4 +274,6 @@ ripper_token2eventid(int tok)
         return ripper_id_CHAR;
     }
     rb_raise(rb_eRuntimeError, "[Ripper FATAL] unknown token %d", tok);
+
+    return (ID)NULL; /* not reached */
 }