* data/c.m4 (b4_identification, b4_user_args, b4_parse_param):

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 183b129f9840a835f8981a6870270e99d7b9b90d..b6ab6934c90619ba53b7518ce4f274004aaf8036 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,7 +1,22 @@
 Bison News
 ----------
 
-Changes in version 1.50a:
+Changes in version 1.75a, 2002-10-24:
+
+* Bison can no longer be built by a K&R C compiler; it requires C89 or
+  later to be built.  This change originally took place a few versions
+  ago, but nobody noticed until we recently asked someone to try
+  building Bison with a K&R C compiler.
+
+* %error-verbose
+  This new directive is preferred over YYERROR_VERBOSE.
+
+* %lex-param, %parse-param
+  These new directives are preferred over PARSE_PARAM and LEX_PARAM.
+  In addition, they provide a means for yyerror to remain pure, and
+  to access to the current location.
+
+Changes in version 1.75, 2002-10-14:
 
 * Bison should now work on 64-bit hosts.
 
@@ -14,6 +29,24 @@ Changes in version 1.50a:
   Some people redefine yyerror to steal yyparse' private variables.
   Reenable this trick until an official feature replaces it.
 
+* Type Clashes
+  In agreement with POSIX and with other Yaccs, leaving a default
+  action is valid when $$ is untyped, and $1 typed:
+
+       untyped: ... typed;
+
+  but the converse remains an error:
+
+       typed: ... untyped;
+
+* Values of mid-rule actions
+  The following code:
+
+       foo: { ... } { $$ = $1; } ...
+
+  was incorrectly rejected: $1 is defined in the second mid-rule
+  action, and is equal to the $$ of the first mid-rule action.
+
 Changes in version 1.50, 2002-10-04:
 
 * GLR parsing