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Issue #9011: AST creation no longer modifies CST for negated numeric literals.

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This commit is contained in:
Mark Dickinson 2012-11-25 17:11:33 +00:00
parent 1658797a9d
commit b1cc6aa2df
3 changed files with 29 additions and 10 deletions
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11
Lib/test/test_parser.py
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@ -567,6 +567,17 @@ class CompileTestCase(unittest.TestCase):
st = parser.suite('a = u"\u1"')
self.assertRaises(SyntaxError, parser.compilest, st)
def test_issue_9011(self):
# Issue 9011: compilation of an unary minus expression changed
# the meaning of the ST, so that a second compilation produced
# incorrect results.
st = parser.expr('-3')
code1 = parser.compilest(st)
self.assertEqual(eval(code1), -3)
code2 = parser.compilest(st)
self.assertEqual(eval(code2), -3)
class ParserStackLimitTestCase(unittest.TestCase):
"""try to push the parser to/over it's limits.
see http://bugs.python.org/issue1881 for a discussion