* @param action_name the reference name of the action.
* @param function prototype given by the type: void...(const char** action)
*/
-void xbt_replay_action_register(const char* action_name, action_fun function)
+void xbt_replay_action_register(const char* action_name, const action_fun& function)
{
simgrid::xbt::action_funs[std::string(action_name)] = function;
}