> On 30 Oct 2018, at 17:01, Ian Jackson <ian.jack...@citrix.com> wrote:
>
> Well, yes, but who would ever call it ? It's not safe to use except
> at the toplevel (whatever that means, but probably outside any
> with_intf) because elsewhere you don't know whose work you're
> sabotaging.
>
> Which reminds me: why do you say it is wrong to use both
> interface_open and with_intf ? It's clumsy and probably a mistake but
> it should function correctly I think.
>
I agree that it would not harm but conceptually I believe you
should manage this explicitly using interface_{open/close} or implicitly
using with_intf. I would use an exit handler to close this global handle
but it would be safe to never close it and to let the process terminate.
I said “should not” rather than “must not” for that reason. Maybe that is
subtle.
— C
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