X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0fb669f9d648dfdd7a39478a6b658511455ae966..41930e7ad89f9a889b1c00fbd2842dded01ada1a:/src/nullable.c diff --git a/src/nullable.c b/src/nullable.c index e73344f8..7ee66120 100644 --- a/src/nullable.c +++ b/src/nullable.c @@ -1,30 +1,29 @@ /* Calculate which nonterminals can expand into the null string for Bison. - Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003, 2004 Free - Software Foundation, Inc. + Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003, 2004, 2005, 2006 + Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. - Bison is free software; you can redistribute it and/or modify + 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 - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. - Bison is distributed in the hope that it will be useful, + This program 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. You should have received a copy of the GNU General Public License - along with Bison; see the file COPYING. If not, write to - the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ + along with this program. If not, see . */ /* Set up NULLABLE, a vector saying which nonterminals can expand into the null string. NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */ +#include #include "system.h" #include "getargs.h" @@ -103,8 +102,8 @@ nullable_compute (void) else { /* This rule has an empty RHS. */ - if (item_number_as_rule_number (rules_ruleno->rhs[0]) != ruleno) - abort (); + aver (item_number_as_rule_number (rules_ruleno->rhs[0]) + == ruleno); if (rules_ruleno->useful && ! nullable[rules_ruleno->lhs->number - ntokens]) {