don't destroy SharedStorage to avoid interference with destruction of class_loader's static variables

Author: rhaschke

planning_interface/common_planning_interface_objects/src/common_objects.cpp

@@ -61,8 +61,16 @@ struct SharedStorage
 
 SharedStorage& getSharedStorage()
 {
+#if 0 // destruction of static storage interferes with static destruction in class_loader
+  // More specifically, class_loader's static variables might be already destroyed
+  // while being accessed again in the destructor of the class_loader-based kinematics plugin.
   static SharedStorage storage;
   return storage;
+#else // thus avoid destruction at all (until class_loader is fixed)
+  static SharedStorage *storage = NULL;
+  if (!storage) storage = new SharedStorage;
+  return *storage;
+#endif
 }
 }