[PATCH] sunrpc: use snprintf to guard against buffer overflow

[Florian Weimer]

* Philipp Tomsich:

>> The switch to snprintf is reasonable (with the caveat that this code is
>> in very, very deep maintenance mode), but I think you should replace the
>> strlen check and also check for negative i.
>
> I'll provide a V2.

Looking forward to it.  You can probably expand the definition of OPSYS
and remove the now-unused macros, too.

Thanks,
Florian
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