[gpsd-dev] tests hanging on netsbd-6 i386

[Greg Troxel]

With the assert fix, that test hangs.  If I kill gpsd, the next test
starts and hangs.  (There's a bug; abend should result in test failure.)

I went to set buzzkill=no to disable the new code, and found that it was
gone.

In general, I think the cope-with-buggy-select stuff is impacting too
much on systems that don't have buggy select.  How prevalent is this
really?  Is the issue that select returns that a fd is readable when it
isn't?  Can this be detected at runtime?   Can the code just sleep for
100ms after getting a zero-length read when select said it had data,
avoiding impacting non-broken platforms?

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