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| author | Bill Fisher <william.w.fisher@gmail.com> | 2022-12-23 14:45:53 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-12-23 14:45:53 (GMT) |
| commit | 88d565f32a709140664444c6dea20ecd35a10e94 (patch) | |
| tree | bd185455ee0b70ed60f6ca29479f2fb918999599 /Lib/test/test_frame.py | |
| parent | 2659036c757a11235c4abd21f02c3a548a344fe7 (diff) | |
| download | cpython-88d565f32a709140664444c6dea20ecd35a10e94.zip cpython-88d565f32a709140664444c6dea20ecd35a10e94.tar.gz cpython-88d565f32a709140664444c6dea20ecd35a10e94.tar.bz2 | |
gh-99110: Initialize `frame->previous` in init_frame to fix segmentation fault when accessing `frame.f_back` (#100182)
Diffstat (limited to 'Lib/test/test_frame.py')
| -rw-r--r-- | Lib/test/test_frame.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_frame.py b/Lib/test/test_frame.py index ed413f1..40c734b 100644 --- a/Lib/test/test_frame.py +++ b/Lib/test/test_frame.py @@ -408,6 +408,15 @@ class TestCAPI(unittest.TestCase): frame = next(gen) self.assertIs(gen, _testcapi.frame_getgenerator(frame)) + def test_frame_fback_api(self): + """Test that accessing `f_back` does not cause a segmentation fault on + a frame created with `PyFrame_New` (GH-99110).""" + def dummy(): + pass + + frame = _testcapi.frame_new(dummy.__code__, globals(), locals()) + # The following line should not cause a segmentation fault. + self.assertIsNone(frame.f_back) if __name__ == "__main__": unittest.main() |