test28.cpp: In member function 'void Object1::func9(Data1*)':
test28.cpp:187:13: warning: Useless variable check 'ptr1'. It already was checked before
             if (ptr1)
             ^
test28.cpp:198:18: warning: Useless variable check 'ptr1'. It already was checked before
             if (!ptr1)
                  ^
test28.cpp:223:18: warning: Useless variable check 'ptr1'. It already was checked before
             if (!ptr1)
                  ^