Re: [Boost-users] [function] vs2005 warning

From: Peter Dimov (pdimov_at_[hidden])
Date: 2006-10-10 17:31:30

Michael Marcin wrote:
> Hi,
> 
> I'm using a few day old RC_1_34_0 from cvs.
> 
> In boost\function\function_base.hpp I get a warning message that is
> quite annoying so I went in to remove it.
> 
> The thing is I don't understand what it is complaining about.
> It gives this warning message:
> 
> boost/function/function_base.hpp(287) : warning C4189: 'out_functor' :
> local variable is initialized but not referenced
> 
> 
> But the code is:
> 
> functor_type* out_functor =
>               reinterpret_cast<functor_type*>(&out_buffer.data);
>    // Some compilers (Borland, vc6, ...) are unhappy with
> ~functor_type. out_functor->~Functor();
> 
> which looks a lot like it is referencing out_functor to me.. can this
> warning be disabled

I think that changing to

reinterpret_cast<functor_type*>(&out_buffer.data)->~Functor();

can fix it.