X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7bd6c77e5e135196b9461c404d2aca4c4fc516fa..1deb9bdcad4477814ee3d3e569e707b25702688a:/NEWS diff --git a/NEWS b/NEWS index b12e9745..0407aad5 100644 --- a/NEWS +++ b/NEWS @@ -1,14 +1,84 @@ Bison News ---------- -Changes in version 1.75b: +Changes in version 1.75f, 2002-12-28: + +* In Yacc-style parsers YYLLOC_DEFAULT is now used to compute error + locations too. This fixes bugs in error-location computation. + +* Bison now uses a Yacc-style format for conflict reports, e.g., + "conflicts: 2 shift/reduce, 1 reduce/reduce". + +* Bison now warns if it detects conflicting outputs to the same file, + e.g., it generates a warning for "bison -d -o foo.h foo.y" since + that command outputs both code and header to foo.h. + +Changes in version 1.75e, 2002-12-24: + +* If the user does not define YYSTYPE as a macro, Bison now declares it + using typedef instead of defining it as a macro. POSIX requires this. + For consistency, YYLTYPE is also declared instead of defined. + +* %union directives can now have a tag before the `{', e.g., the + directive `%union foo {...}' now generates the C code + `typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility. + The default union tag is `YYSTYPE', for compatibility with Solaris 9 Yacc. + For consistency, YYLTYPE's struct tag is now `YYLTYPE' instead of `yyltype'. + +* `yystype' and `yyltype' are now obsolescent macros instead of being + typedefs or tags; they are no longer documented and will be + withdrawn in a future release. + +* References to the experimental %lex-param and %parse-param directives + have been temporarily removed from the manual, since we don't want + users to rely upon these features quite yet. + +Changes in version 1.75d, 2002-12-13: + +* Semicolons are once again optional at the end of grammar rules. + This reverts to the behavior of Bison 1.33 and earlier, and improves + compatibility with Yacc. + +* Type clashes now generate warnings, not errors. + +* Yacc command and library now available + The Bison distribution now installs a yacc command, as POSIX requires. + Also, Bison now installs a small library liby.a containing + implementations of Yacc-compatible yyerror and main functions. + This library is normally not useful, but POSIX requires it. + +* %lex-param, %parse-param + These now take just one operand, not two. + +* The documentation now emphasizes that yylex and yyerror must be + declared before use. C99 requires this. + +* The documentation license has been upgraded to version 1.2 + of the GNU Free Documentation License. + +Changes in version 1.75c, 2002-11-25: + +* "parse error" -> "syntax error" + Bison now uniformly uses the term "syntax error"; formerly, the code + and manual sometimes used the term "parse error" instead. POSIX + requires "syntax error" in diagnostics, and it was thought better to + be consistent. + +* "parsing stack overflow..." -> "parser stack overflow" + GLR parsers now report "parser stack overflow" as per the Bison manual. + +* GLR and inline + Users of Bison have to decide how they handle the portability of the + C keyword `inline'. + +Changes in version 1.75b, 2002-11-13: * %destructor It is now possible to reclaim the memory associated to symbols discarded during error recovery. This feature is still experimental. -* Bison now parses C99 lexical constructs like digraphs, UCNs, and - backslash-newline within C escape sequences, as POSIX now requires. +* Bison now parses C99 lexical constructs like UCNs and + backslash-newline within C escape sequences, as POSIX 1003.1-2001 requires. * --no-line works properly. @@ -470,16 +540,17 @@ End: ----- -Copyright (C) 2001, 2002 Free Software Foundation, Inc. +Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free +Software Foundation, Inc. -This file is part of GNU Autoconf. +This file is part of Bison, the GNU Compiler Compiler. -GNU Autoconf is free software; you can redistribute it and/or modify +Bison is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. -GNU Autoconf is distributed in the hope that it will be useful, +Bison is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.