In file included from /in/compile/Dlist.h:80:0,
                 from /in/compile/dlist_driver.cpp:6:
/in/DlistImpl.h: In instantiation of 'void Dlist<T>::copyAll(const Dlist<T>&) [with T = int]':
/in/DlistImpl.h:94:12:   required from 'Dlist<T>::Dlist(const Dlist<T>&) [with T = int]'
/in/compile/dlist_driver.cpp:124:27:   required from here
/in/DlistImpl.h:120:9: error: invalid conversion from 'int' to 'int*' [-fpermissive]
         this->insertBack(*copy_node->op);
         ^~~~
/in/DlistImpl.h:27:6: note:   initializing argument 1 of 'void Dlist<T>::insertBack(T*) [with T = int]'
 void Dlist<T>::insertBack(T *op) {
      ^~~~~~~~
/in/compile/Makefile:10: recipe for target 'buildDlist' failed
make: *** [buildDlist] Error 1