-Werror: fix for rules useless in parser after conflicts.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index f11844de3738893ba112fccacdf2b52f4c7b8cc0..64a1ee64bd55e7bd268a753fbb57dd1fcc089c9f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,12 +1,30 @@
 Bison News
 ----------
 
-* Changes in version 2.4.2 (????-??-??):
+* Changes in version 2.4.3 (????-??-??):
+
+** Bison now obeys -Werror and --warnings=error for warnings about
+   grammar rules that are useless in the parser due to conflicts.
+
+** 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.
+
+** Contrary to Bison 2.4.2's NEWS entry, it has been decided that
+   warnings about undefined %prec identifiers will not be converted to
+   errors in Bison 2.5.  They will remain warnings, which should be
+   sufficient for POSIX while avoiding backward compatibility issues.
+
+* 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 fixed.  As part of those fixes, fatal
-   Bison errors no longer cause M4 to report a broken pipe on the
+   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.
@@ -18,6 +36,8 @@ Bison News
   %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.
+  [Between the 2.4.2 and 2.4.3 releases, it was decided that this
+  warning will not be converted to an error in Bison 2.5.]
 
 ** Detection of GNU M4 1.4.6 or newer during configure is improved.
 
@@ -1140,7 +1160,9 @@ End:
 
 -----
 
-Copyright (C) 1995-2010 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation,
+Inc.
 
 This file is part of Bison, the GNU Parser Generator.