advpack: Use the FAILED and SUCCEEDED macros instead of comparing to S_OK or zero.

James Hawkins truiken at
Mon May 1 21:30:03 CDT 2006

On 5/1/06, Mike McCormack <mike at> wrote:
> James Hawkins wrote:
> > -            if ((hr = callback(hinf, buffer, arg)) != S_OK)
> > +            if (FAILED(hr = callback(hinf, buffer, arg)))
> It's usually a bad idea to do function calls or assignments inside
> macros... in this case it's safe, but sometimes the macro is something like:
> #define FAILED(hr) (((hr)>0xf00) && (hr)<0xb00))
> then the function would get called twice...

Would you accept the patch if I put all results into an hr and then
called FAILED(hr) instead?

James Hawkins

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