Improve warning verbosity

src/feature_base.cpp

@@ -58,7 +58,7 @@ ConstraintBasePtr FeatureBase::addConstraint(ConstraintBasePtr _co_ptr)
     if (getProblem() != nullptr)
         getProblem()->addConstraintPtr(_co_ptr);
     else
-        std::cout << "WARNING: ADDING CONSTRAINT TO A FEATURE NOT CONNECTED WITH PROBLEM." << std::endl;
+        std::cout << "WARNING: ADDING CONSTRAINT " << _co_ptr->id() << " TO FEATURE " << this->id() << " NOT CONNECTED WITH PROBLEM." << std::endl;
     return _co_ptr;
 }