POSIX: complain if %prec's token was not defined.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 5799790572eb10a4496e356915f62c666bf105cc..13b199e6e024d6bf3b190f6b4e302b8caa9a9585 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -180,6 +180,12 @@ Bison News
   discussion of how to suppress C preprocessor warnings about YYFAIL
   being unused, see the Bison 2.4.2 NEWS entry.
 
   discussion of how to suppress C preprocessor warnings about YYFAIL
   being unused, see the Bison 2.4.2 NEWS entry.
 

+** `%prec IDENTIFIER' requires IDENTIFIER to be defined separately.
+
+  As promised in Bison 2.4.2's NEWS entry, it is now an error if a token
+  that appears after a %prec directive is not defined by %token, %left,
+  %right, or %nonassoc.  This is required by POSIX.
+

 ** Temporary hack for adding a semicolon to the user action.
 
   Previously, Bison appended a semicolon to every user action for
 ** Temporary hack for adding a semicolon to the user action.
 
   Previously, Bison appended a semicolon to every user action for