Re: [boost] [function] Placement new warnings from gcc 6

Subject: Re: [boost] [function] Placement new warnings from gcc 6
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2016-04-03 21:35:19

On 3/04/2016 02:08, Andrey Semashev wrote:
> I guess, I could extract all members other than 'data' to a separate
> union and then:
>
>    union function_buffer
>    {
>      mutable function_buffer_members m;
>      mutable char data[sizeof(function_buffer_members)];
>    };
>
> This would require more modifications to the code though.
>
> (Sigh... if only we could inherit unions...)

Could you do this with an anonymous union?  eg:

union function_buffer
{
     mutable union function_buffer_members
     {
         ...
     };
     mutable char data[sizeof(function_buffer_members)];
};

Haven't tested this; not sure if it's legal to get the sizeof a subtype 
nested in the same scope like this, but it at least seems plausible.