X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/16dc6a9ebf3b936f5383c49d5f29738a53538395..14462c2b1b55540d78ce1f1dc4fe67fcd1c701ac:/NEWS?ds=sidebyside

diff --git a/NEWS b/NEWS
index c7645067..e5ff7976 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,18 @@ Bison News
 
 Changes in version 2.3a+ (????-??-??):
 
+* Previously, Bison sometimes generated parser tables with states that were
+  unreachable due to conflicts in predecessor states.  Bison now:
+
+    1. Removes unreachable states.
+
+    2. Does not report any conflicts that appeared in unreachable states.
+       WARNING: As a result, you may need to update %expect and %expect-rr
+       directives in existing grammar files.
+
+    3. For any rule used only in such states, Bison now reports the rule as
+       "never reduced because of conflicts".
+
 * The -g and --graph options now output graphs in Graphviz DOT format,
   not VCG format.
 
@@ -39,8 +51,8 @@ Changes in version 2.3a+ (????-??-??):
     3. `%code provides {CODE}' replaces `%end-header    {CODE}'
     4. `%code top      {CODE}' replaces `%before-header {CODE}'
 
-  See the %code entries in `Appendix A Bison Symbols' in the Bison manual for a
-  summary of the new functionality.  See the new section `Prologue
+  See the %code entries in section `Bison Declaration Summary' in the Bison
+  manual for a summary of the new functionality.  See the new section `Prologue
   Alternatives' for a detailed discussion including the advantages of %code
   over the traditional Yacc prologues.
 
@@ -914,7 +926,7 @@ End:
 -----
 
 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-2004, 2005, 2006 Free Software Foundation, Inc.
+2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.