[Fontconfig] fontconfig: Branch 'master' - 3 commits

[Akira TAGOH]

Well, just to avoid a possibility any long-run apps repeat FcFini() and
FcInit() and see overflow in the future. I know it takes so long long time
to arrive; in fact in even busy loop it may takes about 90 days in my dev
env from estimation. but just thought it may be good to get rid of such
possibly anyway.

though I should consider to add a kinda fc_atomic_int_set() but I was lazy
to do that ;)
2015/05/23 1:06 "Behdad Esfahbod" <behdad.esfahbod at gmail.com>:

> On 15-05-22 04:53 AM, Akira TAGOH wrote:
> > +         fc_atomic_ptr_cmpexch (&next_id, ot->id + 1,
> FC_MAX_BASE_OBJECT + FC_EXT_OBJ_INDEX + 1);
>
> This won't work, as next_id is an integer and fc_atomic_ptr_cmpexch works
> on a
> pointer.
>
> I suggest changing next_id to long, and then forget about overflow
> completely.
>
> How did you arrive at this patch?  I don't think we care about overflow,
> even
> if next_id was 16 bits only!
>
> b
>
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