X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0fb669f9d648dfdd7a39478a6b658511455ae966..9b33de72cd2469bedac2b5f0a48a8782571ea9db:/src/nullable.c

diff --git a/src/nullable.c b/src/nullable.c
index e73344f8..5bde4047 100644
--- a/src/nullable.c
+++ b/src/nullable.c
@@ -1,7 +1,7 @@
 /* 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.
 
@@ -25,6 +25,7 @@
    the null string.  NULLABLE[I - NTOKENS] is nonzero if symbol I can
    do so.  */
 
+#include <config.h>
 #include "system.h"
 
 #include "getargs.h"
@@ -103,8 +104,8 @@ 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])
 	      {