(AC_INIT): Bump version to 2.0.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index a2c7e5a14489bbda31c67c3f6e87e43aa3a92081..44b657902f92aa1dc90a806557361998154bcb59 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,7 +1,33 @@
 Bison News
 ----------
 
 Bison News
 ----------
 

-Changes in version 1.875d:
+Changes in version 1.875f:
+
+* Bison-generated parsers no longer default to using the alloca function
+  (when available) to extend the parser stack, due to widespread
+  problems in unchecked stack-overflow detection.  You can "#define
+  YYSTACK_USE_ALLOCA 1" to use alloca anyway, but please read the
+  manual to determine safe values for YYMAXDEPTH in that case.
+
+Changes in version 1.875e, 2004-12-10:
+
+* New directive: %initial-action.
+  This directive allows the user to run arbitrary code (including
+  initializing @$) from yyparse before parsing starts.
+
+* The option `--report=lookahead' was changed to `--report=look-ahead'.
+  The old spelling still works, but is not documented and will be
+  removed.
+
+* Error token location.
+  During error recovery, the location of the syntax error is updated
+  to cover the whole sequence covered by the error token: it includes
+  the shifted symbols thrown away during the first part of the error
+  recovery, and the lookahead rejected during the second part.
+
+* Goto numbers are no longer arbitrarily limited to 16-bit counts.
+
+Changes in version 1.875d, 2004-05-21:

 
 * Unescaped newlines are no longer allowed in character constants or
   string literals.  They were never portable, and GCC 3.4.0 has
 
 * Unescaped newlines are no longer allowed in character constants or
   string literals.  They were never portable, and GCC 3.4.0 has


@@ -213,7 +239,8 @@ Changes in version 1.50, 2002-10-04:
   allowed some non-error action other than a default reduction on the
   error token.  The new behavior has long been the documented behavior,
   and has long been required by POSIX.  For more details, please see
   allowed some non-error action other than a default reduction on the
   error token.  The new behavior has long been the documented behavior,
   and has long been required by POSIX.  For more details, please see

-  <http://mail.gnu.org/pipermail/bug-bison/2002-May/001452.html>.
+  Paul Eggert, "Reductions during Bison error handling" (2002-05-20)
+  <http://lists.gnu.org/archive/html/bug-bison/2002-05/msg00038.html>.

 
 * Traces
   Popped tokens and nonterminals are now reported.
 
 * Traces
   Popped tokens and nonterminals are now reported.


@@ -288,8 +315,8 @@ Changes in version 1.50, 2002-10-04:
   produces additional information:
   - itemset
     complete the core item sets with their closure
   produces additional information:
   - itemset
     complete the core item sets with their closure

-  - lookahead
-    explicitly associate lookaheads to items
+  - lookahead [changed to `look-ahead' in 1.875e and later]
+    explicitly associate look-ahead tokens to items

   - solved
     describe shift/reduce conflicts solving.
     Bison used to systematically output this information on top of
   - solved
     describe shift/reduce conflicts solving.
     Bison used to systematically output this information on top of