Defined INVALID_TOKEN which is a token guaranteed to be never generated.

diff --git a/conf/confbase.Y b/conf/confbase.Y
index 2424749fdc09c9c0f45c646852fca84749a8208a..49d3b124923e2ddfc1a5ed9bffa209dc5f5a7d5b 100644 (file)
--- a/conf/confbase.Y
+++ b/conf/confbase.Y
@@ -39,7 +39,7 @@ CF_DECLS
   void *g;
 }
 
-%token END CLI_MARKER
+%token END CLI_MARKER INVALID_TOKEN
 %token <i> NUM ENUM
 %token <i32> RTRID
 %token <a> IPA