PollArrayWrapper.c

[kirk.pepperdine at gmail.com]

Hi Andrew,

Thanks for the boring (as in good) answer. In this case it’s superfluous as it’s wrapping a single statement but..

Regards,
Kirk

> On Mar 2, 2016, at 9:51 AM, Andrew Haley <aph at redhat.com> wrote:
> 
> On 03/02/2016 03:20 PM, kirk.pepperdine at gmail.com wrote:
>> Is there a reason why this logic is wrapped in a do { …. } while(0)
> 
> Every multi-statement #define must always be wrapped in do { …. } while(0)
> 
> consider
> 
>   if (blah)
>      MACRO;
>   else
>      stuff;
> 
> The { } mean the right thing happens with multiple statments;
> the while 0 eats the trailing semicolon in
> 
>  MACRO;
> 
> Andrew.
>