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| author | Mark Dickinson <dickinsm@gmail.com> | 2010-06-17 12:37:17 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2010-06-17 12:37:17 (GMT) |
| commit | a58eed9cca47c6548a231600e3e3379a273b0908 (patch) | |
| tree | 4bd90d072608056ff57f312b0f17deab3f6189b9 /Lib/test | |
| parent | 19d8cc524bb4f6c41b2602c025ce90fe85e1e991 (diff) | |
| download | cpython-a58eed9cca47c6548a231600e3e3379a273b0908.zip cpython-a58eed9cca47c6548a231600e3e3379a273b0908.tar.gz cpython-a58eed9cca47c6548a231600e3e3379a273b0908.tar.bz2 | |
Merged revisions 82043 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
........
r82043 | mark.dickinson | 2010-06-17 13:33:22 +0100 (Thu, 17 Jun 2010) | 6 lines
Issue #9011: Remove buggy and unnecessary ST->AST compilation code
dealing with unary minus applied to a constant. The removed code was
mutating the ST, causing a second compilation to fail. (The peephole
optimizer already takes care of optimizing this case, so there's no
lost optimization opportunity here.)
........
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_parser.py | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py index c7cc13f..e52be06 100644 --- a/Lib/test/test_parser.py +++ b/Lib/test/test_parser.py @@ -479,8 +479,18 @@ class CompileTestCase(unittest.TestCase): st = parser.suite('a = "\\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. + """try to push the parser to/over its limits. see http://bugs.python.org/issue1881 for a discussion """ def _nested_expression(self, level): |