Print address of virtual member function

Question

I am trying to print the address of a virtual member function. If I know which class implements the function I can write:

print(\"address: %p\", &A::func         


        

Answer 1

Pointers to member functions are not always simple memory addresses. See the table in this article showing the sizes of member function pointers on different compilers - some go up to 20 bytes.

As the article outlines a member function pointer is actually a blob of implementation-defined data to help resolve a call through the pointer. You can store and call them OK, but if you want to print them, what do you print? Best to treat it as a sequence of bytes and get its length via sizeof.