vtable on stack
Tue Feb 2 13:11:00 GMT 2010
* Frank Winter:
> I think, its not possible to make use of the vtable with objects
> living on the stack.
This is not true. C++'s brand of polymorphism does not interact well
with copying (due to slicing). Your examples stress this point.
Put differently, you want to create an object of a type which is not
known at compile-time. This is not directly possible in C++.
Workarounds generally use the heap because unknown types have unknown
sizes, and objects of unknown size don't mix well with stack
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