In file included from /in/Compile/dlist_pre.cpp:2:
In file included from /in/Compile/dlist.h:78:
/in/dlist_impl.h:42:5: error: unknown type name 'Node'; did you mean 'node'?
    Node* old = head; 
    ^~~~
    node
/in/Compile/dlist.h:47:12: note: 'node' declared here
    struct node
           ^
In file included from /in/Compile/dlist_pre.cpp:2:
In file included from /in/Compile/dlist.h:78:
/in/dlist_impl.h:42:17: error: use of undeclared identifier 'head'; did you mean 'fread'?
    Node* old = head; 
                ^~~~
                fread
/usr/include/stdio.h:646:15: note: 'fread' declared here
extern size_t fread (void *__restrict __ptr, size_t __size,
              ^
In file included from /in/Compile/dlist_pre.cpp:2:
In file included from /in/Compile/dlist.h:78:
/in/dlist_impl.h:44:5: error: use of undeclared identifier 'head'
    head = head->next;
    ^
/in/dlist_impl.h:44:12: error: use of undeclared identifier 'head'
    head = head->next;
           ^
4 errors generated.
/in/Compile/Makefile:29: recipe for target 'buildDlistPretest' failed
make: *** [buildDlistPretest] Error 1