[PATCH:libXdmcp 3/4] Ensure ARRAYofARRAY8 pointers are initialized to NULL

[Jasper St. Pierre]

Yes, we have given up on portability to Cray systems. That's the only
system, as far as I know, that ever used all-bits-0 != nil pointers.


On Sat, Sep 28, 2013 at 1:22 AM, Mouse <mouse at rodents-montreal.org> wrote:

> > Use calloc for the array of pointers to ensure pointers are cleared
> > out so we don't try to free garbage if XdmcpDisposeARRAYofARRAY8 is
> > called before the caller sets them to valid pointers.
>
> C does not promise that all-bits-0 (what calloc produces) gives nil
> pointers (what you need here).  Has X.org given up on portability to
> systems where all-bits-0 is not a nil pointer?  If not, this is a nasty
> bug waiting to happen.
>
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-- 
  Jasper
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