Where are member functions stored for an object?

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Member functions or pointers to them aren’t stored in the object. (virtual functions are typically called through a pointer stored in a table to which an object has a single pointer to) This would be a huge waste of memory. They’re typically stored in a code memory section, and are known to the compiler. The object (*this) is typically passed as an invisible parameter so the functions know on which object to operate when they are called.

So, in layman terms, you’d have

 0x10001000    void A::foo
 ..........    {code for A::foo}

and

 push a;
 call A::foo (0x10001000)
 pop a;

where a is the object you’re calling foo on.

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