X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f6fbd3da9d1366ccaa0163c6c93dde11e5720262..c826013fb38c98861ef0fc5d4dc3fb3fb4f555be:/src/nullable.c?ds=inline
diff --git a/src/nullable.c b/src/nullable.c
index d41aabeb..b708059a 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, 2000-2006, 2009-2010 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, 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])
{