lcio/src/cpp/include

diff -u -r1.8 -r1.9
--- LCRTRelations.h	6 Dec 2006 19:09:18 -0000	1.8
+++ LCRTRelations.h	8 Dec 2006 14:30:12 -0000	1.9
@@ -10,6 +10,11 @@

 
   //------------------ internal helper typdefs, function and classes ----------
 

+  template <bool B>
+  struct can_call_ext{};
+  template <>
+  struct can_call_ext<true>{ static void check(){/* no_op */ } ; };
+

   /** Function pointer for delete function */
   typedef void (*DeleteFPtr)(void*) ;
 

@@ -424,7 +429,8 @@

     template <class V>
     inline typename V::ext_type  ext() { 
 

-      static char check[ V::allowed_to_call_ext] ;

+      //      static char check[ V::allowed_to_call_ext] ;
+      can_call_ext<V::allowed_to_call_ext>::check() ;

 
       return  ptr<V>() ;
     }