Vtable for 'VirtualDerived' (3 entries).
   0 | offset_to_top (0)
   1 | VirtualDerived RTTI
       -- (VirtualBase, 0) vtable address --
       -- (VirtualDerived, 0) vtable address --
   2 | int VirtualDerived::tick(int)

VTable indices for 'VirtualDerived' (1 entries).
   0 | int VirtualDerived::tick(int)

Vtable for 'VirtualBase' (3 entries).
   0 | offset_to_top (0)
   1 | VirtualBase RTTI
       -- (VirtualBase, 0) vtable address --
   2 | int VirtualBase::tick(int) [pure]

VTable indices for 'VirtualBase' (1 entries).
   0 | int VirtualBase::tick(int)