Re: vtable issue

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actual function call is "call eax" second seems some extra code added by
compiler to perform some run time check.

Regards,
Manish Agarwal

"George" <George@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:49FCECAE-17D1-4F69-A5C7-0897173EC72F@xxxxxxxxxxxxxxxx
Thanks Manish,


Glad you could reproduce this issue. I learned from assembly language
pattern, we can distinguish between function call from virtual table and
function call from non-virtual table.

My question is, for example the assembly code for p->func() below, why
there
is two call statement?

00411D9D mov eax,dword ptr [p]
00411DA0 mov edx,dword ptr [eax]
00411DA2 mov esi,esp
00411DA4 mov ecx,dword ptr [p]
00411DA7 mov eax,dword ptr [edx]
00411DA9 call eax
00411DAB cmp esi,esp
00411DAD call @ILT+485(__RTC_CheckEsp) (4111EAh)


regards,
George


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