integer overflow check

[Julien Cristau]

On Mon, Dec 15, 2014 at 23:50:06 +0100, jes at posteo.de wrote:

> Am 15.12.2014 23:46 schrieb Julien Cristau:
> >Which undefined behaviour?  Overflow of signed ints is not undefined, as
> >far as I know...
> 
> Sorry, thats wrong.
> 
> Overflow of unsigned integers is defined.
> Overflow of signed integers is undefined.
> 
Yes, I did mean unsigned.  The 'count' member of xDRI2GetBuffersReq is a
CARD32, which is unsigned.

Cheers,
Julien