    def test_open_with_filename(self):
        with NamedTemporaryFile() as tmp:
            fp = memmap(tmp.name, dtype=self.dtype, mode='w+',
                        shape=self.shape)
            fp[:] = self.data[:]
            del fp
The software attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.