X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/d0a304384f4207bdf7f8b1038c2226c312f5e954..f3ead217b8636f623399e66bd937b1c51774d4af:/NEWS diff --git a/NEWS b/NEWS index a2ea735e..eabdcc6e 100644 --- a/NEWS +++ b/NEWS @@ -242,6 +242,35 @@ GNU Bison NEWS * Noteworthy changes in release ?.? (????-??-??) [?] +** %language is no longer an experimental feature. + + The introduction of this feature, in 2.4, was four years ago. The --language + option and the %language directive are no longer experimental. + +** New format for error reports: carets + + Caret errors have been added to Bison, for example (taken from the + documentation): + + input.y:3.20-23: error: ambiguous reference: '$exp' + exp: exp '+' exp { $exp = $1 + $2; }; + ^^^^ + + The default behaviour for now is still not to display these unless explictly + asked with -fall of -fcaret. However, in a later release, it will be made the + default behavior (but may still be deactivated with -fno-caret). + +** New value for %define variable: api.pure full + + The %define variable api.pure requests a pure (reentrant) parser. However, + for historical reasons, using it in a location-tracking Yacc parser resulted + in an yyerror function that did not take a location as a parameter. With this + new value, the user may request a better pure parser, where yyerror does take + a location as a parameter (in location-tracking parsers). + + The use of "%define api.pure true" is deprecated in favor of this new + "%define api.pure full". + ** Changes in the format of error messages This used to be the format of many error reports: @@ -282,7 +311,7 @@ GNU Bison NEWS position_type are deprecated in favor of api.location.type and api.position.type. -** Graphviz improvements +** Graph improvements in DOT and XSLT The graphical presentation of the states is more readable: their shape is now rectangular, the state number is clearly displayed, and the items are @@ -291,6 +320,41 @@ GNU Bison NEWS The reductions are now explicitly represented as transitions to other diamond shaped nodes. + These changes are present in both --graph output and xml2dot.xsl XSLT + processing, with minor (documented) differences. + + Two nodes were added to the documentation: Xml and Graphviz. + +* Noteworthy changes in release ?.? (????-??-??) [?] + +** Bug fixes + + Warnings about uninitialized yylloc in yyparse have been fixed. + +** Documentation + + The sections about shift/reduce and reduce/reduce conflicts resolution + have been fixed and extended. + +* Noteworthy changes in release 2.6.5 (2012-11-07) [stable] + + 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 + + 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.