From 28696f5d5f29448c06429bee2719c4343370df70 Mon Sep 17 00:00:00 2001
From: Jeremy Siek <jeremy.siek@gmail.com>
Date: Mon, 11 Jun 2001 15:36:28 +0000
Subject: [PATCH] fixed bug in constructor of the edge iterator

[SVN r10309]
---
 include/boost/graph/detail/adj_list_edge_iterator.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/boost/graph/detail/adj_list_edge_iterator.hpp b/include/boost/graph/detail/adj_list_edge_iterator.hpp
index b1f9f341..f02d4477 100644
--- a/include/boost/graph/detail/adj_list_edge_iterator.hpp
+++ b/include/boost/graph/detail/adj_list_edge_iterator.hpp
@@ -59,7 +59,8 @@ namespace boost {
         if ( vCurr != vEnd ) {
           while ( vCurr != vEnd && out_degree(*vCurr, *m_g) == 0 )
             ++vCurr;
-	  tie(eCurr, eEnd) = out_edges(*vCurr, *m_g);
+	  if ( vCurr != vEnd )
+	    tie(eCurr, eEnd) = out_edges(*vCurr, *m_g);
         }
       }