diff -r 741f3108a90f -r e997802b855c src/test/dfs_test.cc
--- a/src/test/dfs_test.cc	Sat Nov 13 12:24:01 2004 +0000
+++ b/src/test/dfs_test.cc	Sat Nov 13 12:53:28 2004 +0000
@@ -83,7 +83,7 @@
     check(dfs_test.reached(v),"Each node should be reached.");
     if ( dfs_test.pred(v)!=INVALID ) {
       Edge e=dfs_test.pred(v);
-      Node u=G.tail(e);
+      Node u=G.source(e);
       check(u==dfs_test.predNode(v),"Wrong tree.");
       check(dfs_test.dist(v) - dfs_test.dist(u) == 1,
 	    "Wrong distance." << dfs_test.dist(v) << " " <<dfs_test.dist(u) );