def test_argcast(self):
        """
        Issue #1488: implicitly casting an argument variable should not
        break nested calls.
        """
        cfunc, check = self.compile_func(argcast)
        check(1, 0)
        check(1, 1)

        Issue #1488: implicitly casting an argument variable should not
        break nested calls.
        
numba/tests/test_nested_calls.py