bpo-46417: Py_Finalize() clears static exceptioins#30805
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vstinner merged 2 commits intopython:mainfrom Jan 22, 2022
vstinner:exc_finitypes
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bpo-46417: Py_Finalize() clears static exceptioins#30805vstinner merged 2 commits intopython:mainfrom vstinner:exc_finitypes
vstinner merged 2 commits intopython:mainfrom
vstinner:exc_finitypes
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The Py_Finalize() function now clears exceptions implemented as static types. Add _PyExc_FiniTypes() function, called by _PyExc_Fini().
arhadthedev
reviewed
Jan 22, 2022
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| for (Py_ssize_t i=Py_ARRAY_LENGTH(static_exceptions) - 1; i >= 0; i--) { |
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| for (Py_ssize_t i=Py_ARRAY_LENGTH(static_exceptions) - 1; i >= 0; i--) { | |
| for (Py_ssize_t i = Py_ARRAY_LENGTH(static_exceptions) - 1; i >= 0; i--) { |
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Well well well. I would make the line more consistent, but I decided to merge my PR since I'm working on a looong serie of changes: see https://bugs.python.org/issue46417
The CPython C code base is far from being consistent and the PEP 7 is quite relaxed in terms of coding style.
exg
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Jan 25, 2024
We borrow a reference to the static exceptions TypeError and ValueError and pass these objects to PyModule_AddObject, which steals a reference. In Python 3.11 and newer, Py_Finalize() deallocates static exceptions python/cpython#30805 This results in a crash on termination, because _PyStaticType_Dealloc indirectly calls _Py_Dealloc on the objects as the reference count drops to zero. The issue does not occur in Python 3.12 and newer because the objects are immortal. Signed-off-by: Emanuele Giaquinta <emanuele.giaquinta@gmail.com>
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The Py_Finalize() function now clears exceptions implemented as
static types.
Add _PyExc_FiniTypes() function, called by _PyExc_Fini().
https://bugs.python.org/issue46417