Re: A simple problem with an abstract class...

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Jim Brown wrote:
I'm working an a large legacy app that is built with Makefiles using
the Microsoft Visual Studio 8/VC/BIN/cl.EXE compiler. I have a crazy
problem that I'm hoping someone has seen before. I've included a
simplified version of the problem that runs fine in a VC++ console
test project. The project crashes if I instantiate an object of class
B without commenting out the call to the pure virtual function x() in
A::doIt(); Naturally, B deals with objects derived from A.



Thanks for taking a look.

Don't mention it.

I've taken a look and cannot really say anything. You omitted too
much stuff to make any conclusions.






class A

{

public:

void doIt() { x(); }



virtual void x() = 0;



virtual ~A() {}

};



class B

{

public:

B() {}

void push(A* pA) { ... }

A* pop() { A* pA = ...; return pA; }

What's in those dots?


Apparently, whatever you have in those dots screws it up.

void tryIt() { A* pA = pop(); pA->doIt(); }

};

V
--
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.

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