[Mingw-users] COM, CoCreateInstance, and gcc -O2

[Devin S. <dev...@gm...>]

Hi,

Is it possible to make a call to CoCreateInstance and compile with -O2
without getting the "dereferencing type-punned pointer will break
strict-aliasing rules" warning?  Every call to this function generates
this warning message and this can quickly flood/spam the compiler
output and mask legitimate warnings.

For example, here's how I would create an ADO Connection object.

HRESULT hr;
ADOConnection *conn = NULL;

hr = CoCreateInstance(&CLSID_CADOConnection, NULL, CLSCTX_INPROC_SERVER,
    &IID_IADOConnection, (LPVOID *)&conn);

This code compiles in Visual C++ 6.0 and lcc-win32 without any warnings.

Thanks in advance