/* Calculate which nonterminals can expand into the null string for Bison.
- Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003, 2004, 2005 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.
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])
{