It seems, if I break the fd_sets down, that select() is doing "the right thing"
mostly - in particular, it's returning 1, and leaving 1 fd set.  The problem
was just that it was being passed the same fd_set for both read and
exception fd_sets.

My real problem is that select() is claiming that an fd is okay for reading
when the fd will return -1 with EWOULDBLOCK when read.

-s