1 files changed, 8 insertions, 3 deletions

diff --git a/nfa.c b/nfa.c
index d1c6f4e..d386037 100644
--- a/nfa.c
+++ b/nfa.c
@@ -27,8 +27,8 @@
 #ifndef lint
 
 static char copyright[] =
-    "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
-     All rights reserved.\n";
+    "@(#) Copyright (c) 1989 The Regents of the University of California.\n";
+static char CR_continuation[] = "@(#) All rights reserved.\n";
 
 static char rcsid[] =
     "@(#) $Header$ (LBL)";
@@ -159,7 +159,9 @@ int dupmachine( mach )
 int mach;
 
     {
-    int i, state, init, last = lastst[mach], state_offset;
+    int i, init, state_offset;
+    int state = 0;
+    int last = lastst[mach];
 
     for ( i = firstst[mach]; i <= last; ++i )
 	{
@@ -176,6 +178,9 @@ int mach;
 	accptnum[state] = accptnum[i];
 	}
 
+    if ( state == 0 )
+	flexfatal( "empty machine in dupmachine()" );
+
     state_offset = state - i + 1;
 
     init = mach + state_offset;