On 3/26/2014 11:48 PM, Jonathan M Davis wrote:
However, it seems really off to me for there to be any real work going on in empty,
Many things, like some ttys, can not be tested for being empty without reading it, and reading of a tty is destructive.
and I'd be leery of any range which actually required empty to be called before calling front (though I definitely think that calling front on an empty range should not be considered okay and would expect that to generally be undefined behavior).
That's exactly why empty should be called before front - because front is expected to succeed.
