Some of the test cases from Nick's patch are not passing on master:

    ast.literal_eval('')  # raises SyntaxError; expected: ValueError
    ast.literal_eval('6j--3')  # expected: 3+6j
    ast.literal_eval('(2j+4j)+(1+2)')  # expected: 3+6j
    ast.literal_eval('(2j+4j)-(1+2)')  # expected: -3+6j

I'm assuming that new changes in ast.py do not allow for these. Can anyone confirm that this is indeed the case, and not a bug with literal_eval?