diff -r fa2877651022 -r 90defb96ee61 lemon/cycle_canceling.h
--- a/lemon/cycle_canceling.h	Sun Oct 05 20:08:13 2008 +0000
+++ b/lemon/cycle_canceling.h	Mon Oct 06 15:08:17 2008 +0000
@@ -168,8 +168,9 @@
                     const CostMap &cost,
                     const SupplyMap &supply ) :
       _graph(graph), _lower(&lower), _capacity(graph), _cost(cost),
-      _supply(graph), _flow(0), _local_flow(false),
-      _potential(0), _local_potential(false), _res_cost(_cost)
+      _supply(graph), _flow(NULL), _local_flow(false),
+      _potential(NULL), _local_potential(false), _res_graph(NULL),
+      _res_cost(_cost)
     {
       // Removing non-zero lower bounds
       _capacity = subMap(capacity, lower);
@@ -198,8 +199,9 @@
                     const CostMap &cost,
                     const SupplyMap &supply ) :
       _graph(graph), _lower(NULL), _capacity(capacity), _cost(cost),
-      _supply(supply), _flow(0), _local_flow(false),
-      _potential(0), _local_potential(false), _res_cost(_cost)
+      _supply(supply), _flow(NULL), _local_flow(false),
+      _potential(NULL), _local_potential(false), _res_graph(NULL),
+      _res_cost(_cost)
     {
       // Checking the sum of supply values
       Supply sum = 0;
@@ -226,8 +228,9 @@
                     Node s, Node t,
                     Supply flow_value ) :
       _graph(graph), _lower(&lower), _capacity(graph), _cost(cost),
-      _supply(graph), _flow(0), _local_flow(false),
-      _potential(0), _local_potential(false), _res_cost(_cost)
+      _supply(graph), _flow(NULL), _local_flow(false),
+      _potential(NULL), _local_potential(false), _res_graph(NULL),
+      _res_cost(_cost)
     {
       // Removing non-zero lower bounds
       _capacity = subMap(capacity, lower);
@@ -261,8 +264,9 @@
                     Node s, Node t,
                     Supply flow_value ) :
       _graph(graph), _lower(NULL), _capacity(capacity), _cost(cost),
-      _supply(graph, 0), _flow(0), _local_flow(false),
-      _potential(0), _local_potential(false), _res_cost(_cost)
+      _supply(graph, 0), _flow(NULL), _local_flow(false),
+      _potential(NULL), _local_potential(false), _res_graph(NULL),
+      _res_cost(_cost)
     {
       _supply[s] =  flow_value;
       _supply[t] = -flow_value;