test34.cpp: In member function 'void Object1::func1(Data1*)':
test34.cpp:55:15: warning: Using parameter 'ptr1' without checking for null pointer
         ptr1->val = 200;
               ^
test34.cpp: In member function 'void Object1::func2(Data1*)':
test34.cpp:85:15: warning: Using parameter 'ptr1' without checking for null pointer
         ptr1->val = 200;
               ^
test34.cpp: In member function 'void Object1::func3(Data1*)':
test34.cpp:97:19: warning: Using parameter 'ptr1' without checking for null pointer
         if (ptr1->val == 100)
                   ^
test34.cpp: In member function 'void Object1::func4(Data1*)':
test34.cpp:133:22: warning: Using parameter 'ptr1' without checking for null pointer
         while (ptr1->val == 100)
                      ^