def test_duplicate_field_names_assign(self):
ra = np.fromiter(((i*3, i*2) for i in range(10)), dtype='i8,f8')
ra.dtype.names = ('f1', 'f2')
repr(ra) # should not cause a segmentation fault
assert_raises(ValueError, setattr, ra.dtype, 'names', ('f1', 'f1'))
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