glr.cc, yacc.c: initialize yylloc properly

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 90b5d9d8769efbc0bb3b6d7ce2d6703ec5ddc664..3d21470a0685fa0c929a3ae1508c0b3c1e15d7ba 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -2,9 +2,32 @@ GNU Bison NEWS
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 

+  We consider compiler warnings about Bison generated parsers to be bugs.
+  Rather than working around them in your own project, please consider
+  reporting them to us.
+

 ** Bug fixes
 
 ** Bug fixes
 

-  Bugs in the test suite have been fixed.
+  Warnings about uninitialized yylval and/or yylloc for push parsers with a
+  pure interface have been fixed for GCC 4.0 up to 4.8, and Clang 2.9 to
+  3.2.
+
+  Other issues in the test suite have been addressed.
+
+  Nul characters are correctly displayed in error messages.
+
+  When possible, yylloc is correctly initialized before calling yylex.  It
+  is no longer necessary to initialize it in the %initial-action.
+
+* Noteworthy changes in release 2.6.4 (2012-10-23) [stable]
+
+  Bison 2.6.3's --version was incorrect.  This release fixes this issue.
+
+* Noteworthy changes in release 2.6.3 (2012-10-22) [stable]
+
+** Bug fixes
+
+  Bugs and portability issues in the test suite have been fixed.

 
   Some errors in translations have been addressed, and --help now directs
   users to the appropriate place to report them.
 
   Some errors in translations have been addressed, and --help now directs
   users to the appropriate place to report them.


@@ -27,6 +50,23 @@ GNU Bison NEWS
 
   will use YY_CALC_LIB_PARSE_H_INCLUDED as guard.
 
 
   will use YY_CALC_LIB_PARSE_H_INCLUDED as guard.
 

+** Fix compiler warnings in the generated parser (yacc.c, glr.c)
+
+  The compilation of pure parsers (%define api.pure) can trigger GCC
+  warnings such as:
+
+    input.c: In function 'yyparse':
+    input.c:1503:12: warning: 'yylval' may be used uninitialized in this
+                              function [-Wmaybe-uninitialized]
+       *++yyvsp = yylval;
+                ^
+
+  This is now fixed; pragmas to avoid these warnings are no longer needed.
+
+  Warnings from clang ("equality comparison with extraneous parentheses" and
+  "function declared 'noreturn' should not return") have also been
+  addressed.
+

 * Noteworthy changes in release 2.6.2 (2012-08-03) [stable]
 
 ** Bug fixes
 * Noteworthy changes in release 2.6.2 (2012-08-03) [stable]
 
 ** Bug fixes