Revert 2009-12-30 change for undefined %prec token complaints.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 09610cbf5c19c5aa0e3aba8da44dd33a300fc92e..acdd5be18ffa179b589d6539dab03782280f4ae1 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -230,7 +230,33 @@ Bison News
   determine which destructor to call for the lookahead upon a syntax
   error or upon parser return.  This bug has been fixed.
 
-* Changes in version 2.4.2 (????-??-??):
+* Changes in version 2.4.3 (????-??-??):
+
+** Problems with spawning M4 on at least FreeBSD 8 and FreeBSD 9 have
+   been fixed.
+
+** Failures in the test suite for GCC 4.5 have been fixed.
+
+** Failures in the test suite for some versions of Sun Studio C++ have
+   been fixed.
+
+* Changes in version 2.4.2 (2010-03-20):
+
+** Some portability problems that resulted in failures and livelocks
+   in the test suite on some versions of at least Solaris, AIX, HP-UX,
+   RHEL4, and Tru64 have been addressed.  As a result, fatal Bison
+   errors should no longer cause M4 to report a broken pipe on the
+   affected platforms.
+
+** `%prec IDENTIFIER' requires IDENTIFIER to be defined separately.
+
+  POSIX specifies that an error be reported for any identifier that does
+  not appear on the LHS of a grammar rule and that is not defined by
+  %token, %left, %right, or %nonassoc.  Bison 2.3b and later lost this
+  error report for the case when an identifier appears only after a
+  %prec directive.  It is now restored.  However, for backward
+  compatibility with recent Bison releases, it is only a warning for
+  now.  In Bison 2.5 and later, it will return to being an error.
 
 ** Detection of GNU M4 1.4.6 or newer during configure is improved.
 
@@ -1353,8 +1379,7 @@ End:
 
 -----
 
-Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Copyright (C) 1995-2010 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Parser Generator.