Document that undefined %prec identifier warnings will remain.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 83f56c6ec04ac161878dbcada86eb87861893ba7..7097f3bd80aaba305a64ca052b62b92193c0b573 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -180,12 +180,6 @@ Bison News
   discussion of how to suppress C preprocessor warnings about YYFAIL
   being unused, see the Bison 2.4.2 NEWS entry.
 
-** `%prec IDENTIFIER' requires IDENTIFIER to be defined separately.
-
-  As promised in Bison 2.4.2's NEWS entry, it is now an error if a token
-  that appears after a %prec directive is not defined by %token, %left,
-  %right, or %nonassoc.  This is required by POSIX.
-
 ** Temporary hack for adding a semicolon to the user action.
 
   Previously, Bison appended a semicolon to every user action for
@@ -236,12 +230,27 @@ 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.
+
+** 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.
@@ -253,6 +262,8 @@ 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.