Although rare, virtual inheritance (used in multiple inheritance) makes things even worse because even "this" needs to be found through a vtable! So you get ano

Although rare, virtual inheritance (used in multiple inheritance) makes things even worse because even "this" needs to be found through a vtable! So you get another level of indirection. I was going to illustrate with an example like yours but I couldn't figure my way out through all the bits (including the virtual-base offsets in the vtable, or the VTT which is a table of vtables!).