grammar: warn about unused precedence for symbols

[bison.git] / src / assoc.c

diff --git a/src/assoc.c b/src/assoc.c
index 989cb2650245b9087a15c73ecbd1624fee40e2da..d2eec31574e2994bc1d955f19c7b0885c22874d5 100644 (file)
--- a/src/assoc.c
+++ b/src/assoc.c
@@ -1,6 +1,6 @@
 /* Associativity information.
 
-   Copyright (C) 2002, 2005-2006, 2009-2012 Free Software Foundation,
+   Copyright (C) 2002, 2005-2006, 2008-2013 Free Software Foundation,
    Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -43,5 +43,8 @@ assoc_to_string (assoc a)
 
     case non_assoc:
       return "%nonassoc";
+
+    case precedence_assoc:
+      return "%precedence";
     }
 }