Comments by Member 13913102

Member 13913102 23-Nov-18 4:10am View

yes I agree with you. This means first compiler should agree it, vtable comes in picture at runtime.
Thx for your valuable comments and answers.

Member 13913102 23-Nov-18 4:01am View

vtable explanation which I learnt is here:
http://www.learncpp.com/cpp-tutorial/125-the-virtual-table/

Member 13913102 23-Nov-18 3:59am View

yes I missed on polymorphism, but see this link, it says __vptr will point to __vtable of derived class, and this __vtable will have pointer to func_2, then it must be accessed.
http://www.learncpp.com/cpp-tutorial/125-the-virtual-table/

Member 13913102 23-Nov-18 3:00am View

thx for your detailed explanation, I will go thru your answer again, I still have few doubts.
If in base class I rename func_1 as func_2, then this will work fine and derived class function will be called, as concepts of __vtable and __vptr make it happen. __vptr will have address of __vtable of derived class.
But before renaming func_1 to func_2(in original code), why __vptr was not able to find virtual func_2

vtable explanation which I learnt is here:
http://www.learncpp.com/cpp-tutorial/125-the-virtual-table/

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