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Asked: 2026-05-11T20:09:09+00:00

I am debugging a user dump file and there is this class member function

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I am debugging a user dump file and there is this class member function at the top of the the stack trace

  • the stack trace is something like this –

msvcr80.dll!__invalid_parameter_noinfo() + 0xc bytes – 1st FRAME
msvcr80.dll!__invalid_parameter_noinfo() + 0xc bytes – 2nd FRAME
myDLL!myClass::myClassMemFunc(int val = 90) – 3rd FRAME

Now, when I jump to the 3rd frame – the “this” pointer value is invalid (the “this” value is retrieved from the ECX register – but the ECX register value got changed in the first two function of the above stack trace – ) –
so I am not able to see the actual member variables of my class object –

But I know the address of my class object though – which is
0x0012ECE0

when I am trying to watch that memory address with –
(myClass*)(0x0012ECE0)

I get a
CXX0019: Error: bad type cast

even (myClass)(0x0012ECE0) generates the same error.

am I doing anything wrong here? – whats the right way to retrieve the class object value?

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1 Answer

  1. Editorial Team

    just a blind guess: try (myDLL!myClass*)(0x0012ECE0)

    another question, how can you be sure it is your object’s address?

    as a side note, try the windbg – it is way simpler to look for objects around your memory/stack.

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