From eec4df655d411b3611b164c0fdb44e52afc754e3 Mon Sep 17 00:00:00 2001
From: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
Date: Fri, 8 Feb 2008 02:21:23 +0100
Subject: [PATCH] add a default constructor for the TypeId class

---
 src/core/object.cc | 4 ++++
 src/core/object.h  | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/core/object.cc b/src/core/object.cc
index ef051223a..86baa8b9a 100644
--- a/src/core/object.cc
+++ b/src/core/object.cc
@@ -365,6 +365,10 @@ TypeIdTraceResolver::TraceAll (std::ostream &os, const TraceContext &context)
  *         The TypeId class
  *********************************************************************/
 
+TypeId::TypeId ()
+  : m_tid (0)
+{}
+
 TypeId::TypeId (std::string name)
 {
   uint16_t uid = Singleton<IidManager>::Get ()->AllocateUid (name);
diff --git a/src/core/object.h b/src/core/object.h
index 7da6ae27c..4c874fd5f 100644
--- a/src/core/object.h
+++ b/src/core/object.h
@@ -233,6 +233,8 @@ public:
                        uint32_t flags,
                        Ptr<const ParamSpec> spec);
 
+  // construct an invalid TypeId.
+  TypeId ();
   ~TypeId ();
 private:
   friend class Object;