> It seemed faintly preferable to tell the caller how big the array was
> rather than forcing the caller to count for itself.
If you really wanted that, I would be more inclined towards:
struct ibv_device ** ibv_get_device(*length_ptr)
and if you do not want length, you could pass a null length_ptr. But since
I also cannot think of a strong case for it, I prefer the cleaner interface
of leaving it out.
Johann
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