Re: call base class function or derived class function

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"George" <George@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:9E2F1FBE-8F2F-432A-A2BA-BA5AE5070566@xxxxxxxxxxxxx
I have performed experiment, you are correct and there is vtable for
abstract class in its constructor. But its content is so confusing.

Here is the content of vtable when I get from constructor of base
abstract class.

- __vfptr 0x00df574c const Foo::`vftable' *
[0] 0x00df1168 __purecall *

__purecall is the function provided by CRT. MSVC compiler puts it into
vtable slots corresponding to pure virtual functions. When called, it
prints a diagnostic message then aborts the program (of course, in a
valid program it would never be called).
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925


.

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