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The test_unary_minus problem is due to gcc4.1 optimizations.
 We need to fix that.

Yes, please write a test.  As long as you can reproduce the
problem with the old code and the new code doesn't crash,
that's an improvement.  Thanks!

Not sure what you mean by "test".  It should at least be in
a separate method.  Perhaps you could use a new class in
test_socket.  I doubt that a new file should be necessary. 
Even a new class seems like it probably shouldn't be
necessary, but I can't say without actually having written
the test.  We'll figure out where to put it as long as we
have a test case.