[SciPy-Dev] signal.ltisys test crashes on windows

[Ralf Gommers]

The offending test, (0, 3, 3) of:

class TestSS2TF:
    def tst_matrix_shapes(self, p, q, r):
        ss2tf(np.zeros((p, p)),
              np.zeros((p, q)),
              np.zeros((r, p)),
              np.zeros((r, q)), 0)

    def test_basic(self):
        for p, q, r in [
            (3, 3, 3),
            (0, 3, 3),
            (1, 1, 1)]:
            yield self.tst_matrix_shapes, p, q, r


The 0 causes an empty array to be passed to ss2tf, which crashes the
interpreter on Windows XP for both 2.5 and 2.6. Is the empty array really
what was intended with this test?

Thanks,
Ralf
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