build: use gnulib's new bootstrap_sync option.

[bison.git] / tests / input.at

diff --git a/tests/input.at b/tests/input.at
index 3bf6622eb61014d0fa202d94c3fc353e7daafc84..1d50fe0288cb2ae340a880d5ba7f5b35477167d4 100644 (file)
--- a/tests/input.at
+++ b/tests/input.at
@@ -1,5 +1,6 @@
 # Checking the Bison scanner.                    -*- Autotest -*-
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
 # Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -799,6 +800,26 @@ AT_BISON_CHECK([input.y], [1], [],
 AT_CLEANUP
 
 
+## ------------------------------- ##
+## %prec's token must be defined.  ##
+## ------------------------------- ##
+
+AT_SETUP([[%prec's token must be defined]])
+
+# According to POSIX, a %prec token must be defined separately.
+
+AT_DATA([[input.y]],
+[[%%
+start: %prec PREC ;
+]])
+
+AT_BISON_CHECK([[input.y]], [[0]], [],
+[[input.y:2.8-17: warning: token for %prec is not defined: PREC
+]])
+
+AT_CLEANUP
+
+
 ## -------------------------------- ##
 ## Reject unused %code qualifiers.  ##
 ## -------------------------------- ##