2 files changed, 7 insertions, 3 deletions
diff --git a/cutl/container/any.hxx b/cutl/container/any.hxx
index 0c89a38..4fd05b5 100644
--- a/cutl/container/any.hxx
+++ b/cutl/container/any.hxx
@@ -9,6 +9,8 @@
 #include <memory>   // std::auto_ptr
 #include <typeinfo> // std::type_info
 
+#include <cutl/exception.hxx>
+
 namespace cutl
 {
   namespace container
@@ -16,7 +18,7 @@ namespace cutl
     class any
     {
     public:
-      struct typing {};
+      struct typing: exception {};
 
     public:
       template <typename X>
diff --git a/cutl/container/graph.hxx b/cutl/container/graph.hxx
index 9d1c716..35650c1 100644
--- a/cutl/container/graph.hxx
+++ b/cutl/container/graph.hxx
@@ -7,12 +7,16 @@
 #define CUTL_CONTAINER_GRAPH_HXX
 
 #include <map>
+
+#include <cutl/exception.hxx>
 #include <cutl/shared-ptr.hxx>
 
 namespace cutl
 {
   namespace container
   {
+    struct no_edge: exception {};
+
     template <typename N, typename E>
     class graph
     {
@@ -20,8 +24,6 @@ namespace cutl
       typedef N node_base;
       typedef E edge_base;
 
-      struct no_edge {};
-
     public:
       template <typename T>
       T&