'gcc-3_3-branch'.
From-SVN: r74371
--- /dev/null
+typedef int INT_TYPEDEF;
+
+template<class T>
+class TypedIfc
+{
+public:
+ virtual ~TypedIfc() { }
+ virtual operator const T&() const = 0;
+ virtual const T& operator= (const T& t) = 0;
+};
+
+template<class Tnative>
+class NullIfc : public TypedIfc<Tnative>
+{
+public:
+ const Tnative& operator= (const Tnative& t) { return t; }
+ operator const Tnative&() const { return *(Tnative *)0; }
+};
+
+typedef TypedIfc<INT_TYPEDEF> INT_TYPEDEFIfc;
+
+NullIfc<int> i32;