From dc546b0f6e4c3e96cb4fef36213db4a06abab546 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Wed, 1 Jan 2003 09:04:56 +0000 Subject: [PATCH] Bison 1.875. --- ChangeLog | 11 +++-- NEWS | 140 +++++++++++++++++++++++++++-------------------------------- configure.ac | 4 +- 3 files changed, 74 insertions(+), 81 deletions(-) diff --git a/ChangeLog b/ChangeLog index 4bafa05..fa17e75 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2003-01-01 Paul Eggert + + * Version 1.875. + 2002-12-30 Paul Eggert * src/scan-gram.l (","): @@ -5,7 +9,7 @@ (","): Here. This causes stray "," to be treated more uniformly. - * src/scan-gram.l ("}"): Append ";" before the + * src/scan-gram.l ("}"): Output ";" before the last brace in braced code when not in Yacc mode, for compatibility with Bison 1.35. This resurrects the 2001-12-15 patch to src/reader.c. @@ -174,7 +178,7 @@ (token_type): New local var, to keep track of which token type to return when scanning braced code. ("%destructor", "%lex-param", - "%parse-param", "%printer, + "%parse-param", "%printer", "%union"): Set token type and BEGIN SC_PRE_CODE instead of returning a token type immediately. ("{"): Set token type. @@ -10607,10 +10611,11 @@ 1987-12-16 Richard Stallman * REFERENCES: entered into RCS + ----- Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997, -1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. +1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. diff --git a/NEWS b/NEWS index 0407aad..f10f283 100644 --- a/NEWS +++ b/NEWS @@ -1,105 +1,93 @@ Bison News ---------- -Changes in version 1.75f, 2002-12-28: +Changes in version 1.875, 2003-01-01: -* 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. +* The documentation license has been upgraded to version 1.2 + of the GNU Free Documentation License. -* %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'. +* syntax error processing -* `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. + - In Yacc-style parsers YYLLOC_DEFAULT is now used to compute error + locations too. This fixes bugs in error-location computation. -* 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. + - %destructor + It is now possible to reclaim the memory associated to symbols + discarded during error recovery. This feature is still experimental. -Changes in version 1.75d, 2002-12-13: + - %error-verbose + This new directive is preferred over YYERROR_VERBOSE. -* 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. + - #defining yyerror to steal internal variables is discouraged. + It is not guaranteed to work forever. -* Type clashes now generate warnings, not errors. +* POSIX conformance -* 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. + - 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. -* %lex-param, %parse-param - These now take just one operand, not two. + - `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. -* The documentation now emphasizes that yylex and yyerror must be - declared before use. C99 requires this. + - 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. + - Bison now parses C99 lexical constructs like UCNs and + backslash-newline within C escape sequences, as POSIX 1003.1-2001 requires. -Changes in version 1.75c, 2002-11-25: + - File names are properly escaped in C output. E.g., foo\bar.y is + output as "foo\\bar.y". -* "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. + - 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. -* "parsing stack overflow..." -> "parser stack overflow" - GLR parsers now report "parser stack overflow" as per the Bison manual. + - Type clashes now generate warnings, not errors. -* GLR and inline - Users of Bison have to decide how they handle the portability of the - C keyword `inline'. + - If the user does not define YYSTYPE as a macro, Bison now declares it + using typedef instead of defining it as a macro. + For consistency, YYLTYPE is also declared instead of defined. -Changes in version 1.75b, 2002-11-13: +* Other compatibility issues -* %destructor - It is now possible to reclaim the memory associated to symbols - discarded during error recovery. This feature is still experimental. + - %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' not `yyltype'. + This is for compatibility with both Yacc and Bison 1.35. -* Bison now parses C99 lexical constructs like UCNs and - backslash-newline within C escape sequences, as POSIX 1003.1-2001 requires. + - `;' is output before the terminating `}' of an action, for + compatibility with Bison 1.35. -* --no-line works properly. + - Bison now uses a Yacc-style format for conflict reports, e.g., + `conflicts: 2 shift/reduce, 1 reduce/reduce'. -* %error-verbose - This new directive is preferred over YYERROR_VERBOSE. + - `yystype' and `yyltype' are now obsolescent macros instead of being + typedefs or tags; they are no longer documented and are planned to be + withdrawn in a future release. -* %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. +* GLR parser notes - #defining yyerror to steal internal variables is strongly - discouraged. It is not guaranteed to work for ever. + - GLR and inline + Users of Bison have to decide how they handle the portability of the + C keyword `inline'. -* #line - Bison now recognizes #line in its input, and forwards them. + - `parsing stack overflow...' -> `parser stack overflow' + GLR parsers now report `parser stack overflow' as per the Bison manual. -* #line - File names are properly escaped. E.g. foo\bar.y give #line 123 "foo\\bar.y". +* 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 1.75a, 2002-10-24: +* #line in output files + - --no-line works properly. * 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 @@ -540,8 +528,8 @@ End: ----- -Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free -Software Foundation, Inc. +Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 +Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. diff --git a/configure.ac b/configure.ac index 92bda9f..b63a9a2 100644 --- a/configure.ac +++ b/configure.ac @@ -1,6 +1,6 @@ # Configure template for GNU Bison. -*-Autoconf-*- # -# Copyright (C) 2001, 2002 Free Software Foundation, Inc. +# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -20,7 +20,7 @@ # We need a recent Autoconf to run a recent Autotest. AC_PREREQ(2.54) -AC_INIT([GNU Bison], [1.75g], [bug-bison@gnu.org]) +AC_INIT([GNU Bison], [1.875], [bug-bison@gnu.org]) AC_CONFIG_AUX_DIR(config) AM_INIT_AUTOMAKE([1.7 check-news readme-alpha dist-bzip2]) -- 2.7.4