test25.cpp: In member function 'void Object1::func1(Data1*)':
test25.cpp:43:22: warning: null argument where non-null required (argument 2) [-Wnonnull]
         test1(nullptr);
                      ^
test25.cpp: In member function 'void Object1::func2(Data1*)':
test25.cpp:48:14: warning: warning: possible null argument 'ptr1' where non-null required
         test1(ptr1);
              ^