diff -r ce9438c5a82d -r 4297098d9677 src/benchmark/bfs-bench.cc
--- a/src/benchmark/bfs-bench.cc	Wed Aug 25 18:55:57 2004 +0000
+++ b/src/benchmark/bfs-bench.cc	Mon Aug 30 12:01:47 2004 +0000
@@ -48,7 +48,7 @@
     Node n(Q.front());
     Node m;
     Q.pop();
-    for(OutEdgeIt e(G,n);G.valid(e);G.next(e))
+    for(OutEdgeIt e(G,n);e!=INVALID;++e)
       if(!visited[m=G.head(e)]) {
 	Q.push(m);
 	visited.set(m,true);
@@ -76,7 +76,7 @@
   do {
     Node m;
     Node n=Q[Qt++];
-    for(OutEdgeIt e(G,n);G.valid(e);G.next(e))
+    for(OutEdgeIt e(G,n);e!=INVALID;++e)
       if(!visited[m=G.head(e)]) {
 	Q[Qh++]=m;
 	visited.set(m,true);
@@ -91,8 +91,8 @@
 
   int i=0;
   
-  for(NodeIt n(G);G.valid(n);G.next(n))
-    for(OutEdgeIt e(G,n);G.valid(e);G.next(e))
+  for(NodeIt n(G);n!=INVALID;++n)
+    for(OutEdgeIt e(G,n);e!=INVALID;++e)
       i++;
 }