Bug using dynamicaly loaded function ?

Vermi moi at vermi.fr
Fri Oct 31 04:21:10 PDT 2008


Hi,
I'm having trouble with a very simple code, I don't know if it's a bug of the compiler or if I do something wrong.

Here is the peace of code :

---------------------------

alias BOOL function(HWND, DWORD) REGISTERSHELLHOOKPROC;

// Get function at ordinal 181
REGISTERSHELLHOOKPROC _registerShellHook = cast(REGISTERSHELLHOOKPROC)GetProcAddress(GetModuleHandleA("SHELL32.DLL"), cast(char*)0x000000B5);

if ( _registerShellHook != null )
{
  _registerShellHook(null, 1);
  _registerShellHook(this._handle, 3);
}

---------------------------


It compile sucessfully, but I have an "Access Violation" at runtime. After looking at the generated assembler code I found that the call is not compiled the right way.

_registerShellHook(null, 1); is compiled as :
push 0 <--- Should be afteur the "push 1"
mov eax, 1 <--- should be push 1
call esi <--- right adress

it's the same problem for the second call. What have I done wrong ?


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