Apparent aliasing problem when optimizing

[Marc Singer]

On Wed, Apr 09, 2003 at 10:50:59PM -0700, Zack Weinberg wrote:
> Change
> 
>     HRESULT result =
>       m_psfDesktop->BindToObject (pidl, __null, IID_IShellFolder, &(void*)psf);
> 
> to
> 
>     HRESULT result =
>       m_psfDesktop->BindToObject (pidl, __null, IID_IShellFolder, (PVOID*)&psf);
> 
> and it should start working correctly.  (Your code should get a
> warning, or perhaps even a hard error - you're applying the & operator
> to a cast to non-reference type, which is not an lvalue, so it's
> invalid.)
> 
> I see several other places where the code contains the same mistake.

When compiling with -Wall there are no warning.  I read your
explanation.  Why (void*) cannot be a reference type when
(IShellFolder*) is?